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Local Waterfront Revitalization Program Draft 3/1/1986
E Ti$. $ j � I m �l y��' p �q y�* t & 2 a,k VILLAGE TOWN OF OF LARCHMONT MAMARONECK j . ca '` M _ .t— . ,,aFP, 1 .; 0kit at‘l " 161‘..4 x \7 41k . )1 (c1 er - „it( 1, 3 e .. ' � I LOCAL y� WATERFRONT ' - ' '''„,,;:14 'IVc;,' '''''. . ''', $ 4 REVITALIZATION � , - = : , ,. ,• � PROGRAM .capes ovA D ,n+.»r+yo '~ del 1 `, •, `` �, c' it r 'r j ' gam .{�. ° 1 ,^ _ - p les " •...n-i_f,574.....a.-- i. k it (V�.i; r'u[� • i "'i, �� ,�1zt w arm § �y + � iJ� ' l4r v� ,' �lUlr / .t; r V'- , a 'I^ k 4404 ' i' syr • VILLAGE TOWN OF OF LARCHMONT MAMARONECK The preparation of this report was financially aided through a federal grant from the Office of r; Ocean and Coastal Resource Management, National Oceanic and Atmospheric Admin- '' istration under the Coastal Zone Management ' ' '=-��� Act of 1972, as amended. This report was "`' prepared for the New York Department of _ • $-- State. March 19 8 6 � g .. SHUSTER ASSOCIATES t.-41--,. .."- k1 i „�4 - �, < PLANNING CONSULTANTS gf tem F yyw lc N K !f. t: 12, `!' i IX N' tUrB ,7711 itle '` :r ..-- LOCAL .mss Art--...4-,„4-1.;:f. �-'y ,��. F:"`;'7 .'� ` `' . WATERFRONT ' }A I. _ �' � ' REVITALIZATION PROGRAM VILLAGE TOWN OF OF LARCHMONT MAMARONECK Board of Trustees Town Council Miriam Curnin , Mayor Dolores A. Battalia, Supervisor James I. Anderson Thomas R. Amlicke Sydney Astle Stephen C. Chapin Nan Forger, Deputy Mayor Lawrence Lerman, CZMC Liaison Paul H. Kean, Caroline Silverstone, CZMC Liaison Deputy Supervisor Barbara Wood, Village Clerk Dorothy S. Miller, Town Clerk Coastal Zone Management Committee Wallace Irwin Jr. , Co-Chairman for Village of Larchmont Shirley W. Tolley, Co-Chairman for Town of Mamaroneck Subcommittee Heads: Elinor Fredston, Mary Anne Johnson, Lawrence Lowy, C. Alan Mason, Howard McMichael Jr. Members: Bruce .Allen, June Allen, Alex Buchman, Joseph F. Dorsey, William Eipel, Gary Hirschberg, Arthur A. Katz, James Killilea, James Lotto, Elaine Price, Edward D. Riley, Robert S. Schoenberger, Joseph F. Vandernoot, Robert E. White, Leo Wilson Officials of the two Municipal Governments principally consulted in preparing this Draft Program Village of Larchmont Town of Mamaroneck Frederick F. Kellogg, Jr. , Stephen V. Altieri, Administrator Village Engineer Clifford E. Emanuelson, James Staudt, Attorney Environmental Consultant Steven Silverberg, Attorney IN MEMORIAM The Committee records with sorrow the loss of Paul M. Miller of the Village of Larchmont, who served as Co-Chairman from December 1982 through December 1983 and earned the respect and friendship of all members; and of Albert H. Blumenthal, also of the Village of Larchmont, a distinguished public servant who, like Paul Miller, was a member of the Committee from the outset. Both died in 198)1. Their participation in this work is gratefully remembered. CONTENTS Page SECTION I WATERFRONT REVITALIZATION BOUNDARY 1 A BOUNDARY CONSIDERATIONS 1 B PROPOSED COASTAL BOUNDARY REVISION 2 C DESCRIPTION OF PROPOSED COASTAL BOUNDARY 2 D RECOMMENDATION TO THE SECRETARY OF STATE 3 SECTION II INVENTORY AND ANALYSIS (see detailed contents preceding page 4) 4 SECTION III LOCAL POLICIES AND APPLICABLE STATE POLICIES 39 SECTION IV PROPOSED LAND AND WATER USES AND PROPOSED PROJECTS 70 A PROPOSED LAND AND WATER USES 70 B PROPOSED PHYSICAL PROJECTS 76 SECTION V TECHNIQUES FOR LOCAL IMPLEMENTATION OF THE PROGRAM 84 A LOCAL LAWS AND REGULATIONS 84 B OTHER ACTIONS 90 C MANAGEMENT STRUCTURE TO IMPLEMENT THE LWRP 92 D FINANCIAL RESOURCES NECESSARY TO IMPLEMENT THE LWRP 99 SUMMARY CHART OF ACTIONS IMPLEMENTING POLICIES 100 SECTION VI FEDERAL AND STATE PROGRAMS LIKELY TO AFFECT IMPLEMENTATION 104 A FEDERAL AND STATE ACTIONS AND PROGRAMS WHICH SHOULD BE UNDERTAKEN IN A MANNER CONSISTENT WITH THE LWRP 104 B FEDERAL AND STATE ACTIONS NECESSARY TO FURTHER THE LWRP 104. 14 SECTION VII CONSULTATION WITH OTHER AFFECTED STATE, REGIONAL AND LOCAL AGENCIES 105 A ADJACENT MUNICIPALITIES 105 B WESTCHESER COUNTY GOVERNMENT 105 C STATE OF NEW YORK 106 D RESOLUTION OF CONFLICTS 106 SECTION VIII LOCAL COMMITMENT 107 SECTION IX DRAFT ENVIRONMENTAL IMPACT STATEMENT (see detailed contents preceding page 109) 109 MAPS following page No. NO. 1 REGIONAL SETTING 3 NO. 2 BOUNDARY MAP - 3 NO. 3 LOCATION MAP 39 NO. b EXISTING OPEN SPACE 39 NO. 5 HYDROLOGIC FEATURES 39 NO. 5A TIDAL WETLANDS AND COASTAL HIGH HAZARD AREAS 39 NO. 6 POLICY ISSUES 39 NO. 7 GENERALIZED EXISTING ZONING 83 NO. 8 ACTION PROGRAM 83 NO. 9 PROPOSED LAND AND WATER USE 83 APPENDICES A AND B 10Z14- _�'��'x • r lsem� .'''' '',.,''' -•"—"-- ' 4' - . " - 's'" '',?..- " Nkill"*:. ' ;`-: • r ice.I• / 4 ,yam, +- ^-mss -,-.7-0,,,,„ 1ref t .i,;1'1'". r.:- 4 ., ' ales Ate.a*,..'_ • VILLAGE TOWN OF OF LARCHMONT MAMARONECK The preparation of this report was financially aided through a federal grant from the Office of "•� Ocean and Coastal Resource Management, k;:-,' National Oceanic and Atmospheric Admin- . istration under the Coastal Zone Management '-n� Act of 1972, as amended. This report was `` i4�a .- F .. N.._ ...ted �_...,.1 prepared for the New York Department of �; r State. . ', ; ...,-,. ye♦ 1t4 4t`' {s4; �.k._II� itHtlet ,� a ;/" - a+. ♦ i .� _ '--= _ - . 1 SECTION I #' + Z.01 �icwa ... {a , i � � °" r. � WATERFRONT _ . it . ,., REVITALIZATION BOUNDARY SECTION I: WATERFRONT REVITALIZATION BOUNDARY A. Boundary Considerations The coastal zone boundary for this area delineated by the State of New York (see Map No. 1) shows an inland boundary which follows the Boston Post Road all the way across the Town and Village from the New Rochelle border to the Village of Mamaroneck border. The area within this boundary includes those lands most frequently associated with the coastal waters in terms of use and impact from the coastal environment. However, it does not include lands and inland waters that are of major importance under one of the criteria established by the State for defining coastal boundaries. Section 3 of the State Coastal Management Program (State of New York Coastal Management Program and FEIS, August 1982, page II-3-2) establishes as one of its criteria that the coastal boundary should "include all land and water uses directly impacting coastal waters . . . such impact is defined as that which changes the physical, chemical, biological, littoral or aesthetic characteristics, or the social-economic values of coastal waters to the extent that the character, use or availability of its resources and/or the environmental quality standards of the coastal waters are so adversely affected that they can only be maintained or restored at high cost to society." As the Inventory and Analysis (Section II, below) makes clear, the phys- ical, chemical, biological, littoral and aesthetic characteristics of our coastal area suffer significant damaging impact from pollution, siltation and flooding. The sources of much of this damage are the various watercourses carrying runoff from drainage basins which empty into Long Island Sound. All of these watercourses traverse northerly areas of the Town and Village well inland from the coastal zone boundary established by New York State. Not only do existing and long-standing conditions in these drainage basins adversely affect our coastal waters; we must also deal with the possibility of future changes in land use intensity and characteris- tics, drainage patterns, or land management practices, that could have a further adverse impact. Removing, preventing, or mitigating such adverse impacts is a principal objective of a number of policies, projects, and actions proposed in Section III, IV and V below. A further pertinent factor is the need for cooperation with neighboring municipalities. Every drainage basin that traverses the Village of Larchmont and/or the Town of Mamaroneck's Unincorporated Area begins or ends, or both, in another community (see Map No. 1) . Thus, drainage basin management, with all its implications for the coastal zone, is necessarily an intermunicipal concern. This necessity is recognized and provided for in succeeding sections of the present draft Program. At the least, commu- nication and coordination between municipalities in the same drainage basin will be required, and the creation of formal drainage basin management entities may well be deemed more appropriate and effective. The Town of Mamaroneck and the Village" of Larchmont can be far more effective partici- pants in such intermunicipal arrangements if their Waterfront Revi- talization boundary, and hence the reach of their LWRP policies affecting 1 drainage basin management, clearly extends throughout their area of juris- diction and control. (See Section III, Policies 12A, 14A, 14B; Section V-B, Item 1. , and V-C, Item 3-d-6) . Finally, it is pertinent to note another criterion laid down by New York State (State Coastal Management Program, page II-3-2, criterion 2) in establishing the inland coastal boundary; namely, that the boundary should "conform with the nearest cultural feature or political boundary." The explanation points out that a boundary that follows "known landmarks . . . such as a road, railroad, utility right-of-way, or municipal boundary" simplifies determination of what lies inside or outside of the coastal zone. The boundary revision proposed below is consistent with this crite- rion. B. Proposed Coastal Boundary Revision In view of the foregoing considerations, major revision in the inland coastal zone boundary is proposed. An excellent argument could be made on environmental grounds for extending the boundary to the limits of the drainage basins which impact the coastal waters. However, we make no such proposal because it is beyond the authority of any municipality to adminis- ter a boundary, or to implement policies and programs, beyond its area of municipal control. Our proposal, therefore, is more limited. We propose that the coastal zone boundary be revised, as shown on Map No. 2 to include the whole area within the boundary of the Town of Mamaroneck, including the entire Village of Larchmont, except that part of the Village of Mamaroneck which lies within the Town. Within this revised boundary, the Town and Village will be able to estab- lish a management program under the LWRP for the maximum area over which they have jurisdiction, the uses of which have a direct impact on the coastal waters. Moreover, they will be assured of an adequate basis for their role in building intermunicipal arrangements for drainage basin management. C. Description of Proposed Inland Coastal Boundary The proposed inland Coastal Zone boundary is described as follows: -- Beginning at the southern (Long Island Sound) terminus of the boundary between the Town of Mamaroneck and New Rochelle; -- Thence inland along the Town boundary to the boundary of the Village of Mamaroneck; -- Thence south along the western boundary of the Village of Mamaroneck to the coast. • 2 D. Recommendation to the Secretary of State Pursuant to the State LWRP Guidelines, a recommendation to the Secretary of State for revision of the Coastal Zone boundary in accordance with the above proposal has been submitted separately. 3 • • o\\ jr I Eh "opt: i s �� o )'`''1 / / f 01 %,, , ' ,{} • l� _i "`f �� o \ =zl Ir =; J 11 • 1t1 .� IIl , , PRS _ _ta /�� _ J , I ) , . Y � _ _-.- ,i.\-" I've •.. 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VILLAGE TOWN OF OF LARCHMONT MAMARONECK The preparation of this report was financially aided through a federal grant from the Office of "", Ocean and Coastal Resource Management, National Oceanic and Atmospheric Admin- �: ,mai-, istration under the Coastal Zone Management '',Vi--,---..., „,,,,77.v Act of 1972, as amended. This report was , prepared for the New York Department of State. tip w< . '� )`� S !1 Psi . I[� ,' t 1' q. m� '' r t A 4 �7r-'!5" x ,,„, 1 r ';q q 'iti by ,- A'j t- per .- .,, , w , } . x. � �� � ;� x� �� � � SECTION II 5. . -W f ''''01" i yT‘.._ F: ,;_ ; x , INVENTORY . AND , , ANALYSIS Section II - Contents Page 1. Summary 4 2. Introduction: General Description 4 (a) . Physical geography, (b) economic geography, (c) economy, (d) public access to waterfront 3. Resources 8 (a) Human resources, (b) residential real estate, (c) recreation, (d) historic buildings and sites, (e) scenic resources, (f) living resources, (g) open space, (h) water resources, (i) organizational resources, (j) conclusion 4. Fish and Wildlife Habitat Narrative 17 5. Adverse conditions: Introductory Observations 22 6. Problem Localities: The Pine Brook-Premium Watershed23 (a) Larchmont Hills, (b) the Pine Brook area, (c) the Premium Marsh, River and Millpond, (d) the Upper Premium River 7. Problem Localities: The Sheldrake Watershed 27 (a) Weaver Street-Bonnie Briar area, (b) Brookside Drive area 8. Problem Localities: East Creek, Gut Creek, Little 28 Harbor Sound, and the Hammocks Marsh 9. Problem Localities: The Harbor Area 31 (a) Navigation and dredging, (b) harbor security 10. Areawide Sewage Problems 33 11. Areawide Causes and Cures of Interacting Flood, 34 Siltation and Sewage Problems 12. Other Areawide Pollution Problems: Water, Air, 34 Noise, Litter 13. Recreation: Possibilities and Limits 37 14. Historic and Scenic Preservation 38 SECTION II: INVENTORY AND ANALYSIS 1. Summary The Village of Larchmont and the Unincorporated Area of the Town of Mamaroneck together occupy an attractive but environmentally vulnerable six-square-mile residential area along the Long Island Sound shore of Westchester County -- a highly indented and beautiful coastline totaling some nine miles. Proximity to New York and the beauty and recreational values of the area have attracted a high-income business and professional population of some 20,000. The area supports a prosperous economy based on residential real estate and including many retail and service establish- ments. Although most of the coastline is in private hands, there is wide access to the shore through private clubs and through public access to shoreline parks and conservation areas. Additional values include ecologically significant fish and wildlife habitats (primarily salt and freshwater wetlands) and sites of historical importance and scenic beauty. These values, and the economy and way of life that depend on them, have already been damaged to some degree, and are further threatened, by en- vironmental problems -- chiefly upstream flooding from overbuilt watersheds with associated siltation and sanitary sewer malfunctions, and adverse impact on streams, wetlands, and fish and wildlife habitats. Siltation in the harbor area also periodically affects boating, a major recreational . activity. Other problems include water pollution, which affects public health and sensitive wildlife habitats; occasional coastal flooding during storms and high tides; noise pollution and litter. A further long-range problem is how to assure future protection of places of historic or scenic importance. Our geographic situation makes it- obvious that many aspects of. our communi- ty's environmental problems can only be addressed effectively with the aid of intermunicipal cooperation extending throughout the watersheds that terminate on, or transit, our coastal zone. In Section I we have proposed a change in the inland Coastal Zone boundary in order to maximize the ability of both municipal governments to deal with these problems; but since the problems follow geographic rather than political lines, and extend well beyond our political jurisdiction, the solutions must do likewise. Provision for intermunicipal cooperation, with reinforcing participation by agencies of the State and Westchester County governments, will therefore be an integral part of our Local Waterfront Revitalization Program. 2. Introduction: General Description This Local Waterfront Revitalization Program covers the Village of Larchmont and the Unincorporated Area of the Town of Mamaroneck. The area covered is bounded on the west by the City of New Rochelle, on the north by the Village of Scarsdale, and on the east by the Town of Harrison and the • Village of Mamaroneck. 4 Of the approximately 6 square miles in this area, one square mile -- • including about eight out of nine miles of highly indented coastline -- lies within the incorporated Village of Larchmont. The remainder consists of the unincorporated area of the Town, which borders the Village on all its inland sides and also includes parts of two ecologically important pieces of shoreline and major parts of the watercourses that drain the area. Geography and patterns of development link the two municipalities in many ways. The Town-Village borders on both east and west run through ecologi- cally and hydrologically important stream beds and tidal inlets. Several of the two municipalities' functions, notably sanitation and conservation, are performed jointly. Town and Village residents share the same school district, post office, telephone exchange, and public library; many attend the same houses of worship and belong to the same local voluntary organiza- tions. Thus, the entire area shares an interest in the health of the same coastal zone. a. Physical Geography: Geologically, the area is part of the Manhattan Prong, the southernmost portion of the New England upland geological province. The underlying rock structure makes for great topographical variety and scenic beauty, with hills and streams running down to a sound shore made up of numerous small bays, inlets and promontories. This advantage, however, is partly offset by environmental drawbacks. In many places the underlying rock is near the surface, limiting the capacity of the ground to absorb water and thus contributing to • problems of flooding and siltation. These are serious problems for our community, most of which is drained by the Pine Brook, Sheldrake, and East Creek-Gut Creek yatersheds flowing through such rocky heights for much of their length. b. Our economic geography is likewise a mixed blessing. Our location in a great metropolitan region -- with a railroad and two interstate highways crossing our community, four large airports nearby (one major one being just across the Sound) , and substantial small industry and 1These three watersheds are the focus of drainage-related problems discussed in Parts 6, 7, and 8 of this Inventory. As the drainage boundaries shown on Map 1 make clear, a fourth watershed, that of the Mamaroneck River, drains an area of about .6 square mile in the northeastern portion of the Town, about half of it consisting of a part of the Saxon Woods County Park. Immediately downstream from this area is the Village of Mamaroneck, which has chronic problems of residential flooding in this watershed during rainy periods. Part of the Town area in this watershed is in a residential (R-20) zone in which further residential development is planned. The zoning and topography of the area are such that it is not believed that this development, properly controlled, will aggravate downstream flooding. Town authorities are aware of the interest of .the Village of Mamaroneck in this matter and take care to give that Village advance notice of all Town land use proceedings affecting this area. • 5 commercial water traffic along the nearby Sound shore -- brings us 4111 important economic benefits; indeed, it is the basic source of employment for our residents. But this location also brings environmental drawbacks: pollution of water, air and soil by aircraft, vehicular and industrial wastes; noise pollution; and the flooding and other evils that result from residential overbuilding. c. Economy: The dominant business in both Larchmont and the unincorporated area is residential real estate. We have no manufacturing, and commercial enterprises in the area exist mainly to serve local or nearby residents. The area's residential value lies partly in its ready access to New York City by both road and rail, but also in its physical beauty and the ame- nities and recreational advantages of its coastal location. Personal incomes cover a wide range, but the average level in the community is high. The resulting high residential real estate values, and the ancillary professional and business (mainly retail) establishments, provide tax support for a high-quality public school system and efficient municipal services. The residential development of Larchmont and the unincorporated area (most of which lies within the Larchmont postal district, zip code 10538) has proceeded steadily since the late 19th century. Development of Larchmont Village took place primarily before World War II, while that of the unin- corporated area continued thereafter -- in both cases with subdivision of 11111 large properties into single-family homes and construction of numerous apartment houses near the major east-west thoroughfares. The population of the area grew from 14,500 in 1940 to about 20,000 in 1970. Of the latter number, about 7,000 lived in the Village. These figures remained approxi- mately unchanged through 1980. This stabilization underlines a fact of major importance for local planning, namely, that property in the area is already almost fully developed except for the existing parks, golf courses, and conservation areas described below. In fact, as will be seen below, overbuilding in recent decades, both in our community and in those up- stream, has caused some of our most serious problems -- flooding, siltation, pollution and malfunction of sanitary sewers -- which threaten the beauty and integrity of the coastal zone on which the community's property values, economy, and ecology all heavily depend. Public Access: The bulk of the Long Island Sound shoreline, including tidal estuaries and inlets, in our community is privately owned, either by homeowners or by private clubs and associations, to which many Village and Town residents belong. However, a significant amount of public property, and one uniquely important private park, are open to the public, as follows (see Map 4) : The Larchmont Manor Park (12.65 acres) winds along a twisting half mile of indented shore from Umbrella Point westward to, and including, Horseshoe Harbor. It is one of the great beauty spots of the Westchester shore. It has been owned and maintained since its estab- • lishment by the Larchmont Manor Park Society, whose enlightened 6 • management has preserved the park for nearly a century as an asset for the whole community. The Larchmont Manor Park Society is a nonprofit corporation whose membership is limited to residents of a designated area (Map 610) south of the Boston Post Road. Under a deed to the Society in 1892, the right to use the park is limited to residents of Map 610, their households and guests; however, the society has also invited access to the park by residents outside that area, subject only to rules de- signed principally to preserve the park's peaceful atmosphere, beauty, and fragile environment (its soil is shallow and has occasionally suffered from overuse) . The boating facilities in Horseshoe Harbor are managed for the society by the Horseshoe Harbor Yacht Club. The society itself manages the adjoining beach and swimming facil- ities, providing access and bathhouse space to Larchmont Village residents, first come first served, for a seasonal fee. The larger, landscaped portion of the park is used for passive recre- ation only. Over the decades the society, at its own expense, has erected seawalls and planted and maintained lawns and trees to pre- serve and maintain the park's appearance. The Horseshoe Harbor Yacht Club has conducted dredging operations three times in the past 30 years to improve the boating conditions in Horseshoe Harbor. The Manor Park is artfully landscaped and adorned with stately trees, • three gazebos overlooking the Sound, broad lawns, wild thickets and winding walks, and a spectacular formation of ancient metamorphic rock skirting the shore. Flanked by Larchmont Harbor on one side and Horseshoe Harbor on the other, it commands a sweeping view of Long Island Sound and the Long Island shore opposite. It is an important resource for natural history education and a favorite place for strolling and for watching the sailing and racing activity centered on the Larchmont Yacht Club nearby. Village of Larchmont Property: Flint Park, the largest, as well as Pine Brook, Lorenzen and Woodbine Parks, all touch the waterfront or streams near it. The total park area of about 37 acres is mainly accounted for by Flint Park (27 acres) . Its mostly level ground contains tennis and paddle tennis courts and playing fields. It is a key facility in the Village's recreational life. It is also the site of a small building used for meetings and cultural events. Its use for public access to the shoreline for passive recreation, however, is impaired by the location of a Village leaf disposal facility at the south end of the park adjoining the Hommocks Marsh. In addition, the dead ends of several Village streets abut the waterfront or the Premium estuary. Finally, it should be noted that the easternmost 50 feet of Premium Point, just inside the Village of Larchmont border, is unimproved • Village property totaling about 0.1 acre. The use of this area for 7 public recreation has been considered from time to time, but, as is noted later in this inventory, there are many drawbacks to such use. Town of Mamaroneck property: Two important waterfront areas are Town property under the management of the Conservation Advisory Commission. These are the 5-acre Hommocks Conservation Area, most of which lies in the Town (the rest is in the Village of Mamaroneck) and the 10-acre Premium River Conservation Area. Both include tidal wetlands with well-rooted marsh grasses which function as important wildlife habi- tats and, through their water-retention capacity, retard erosion in the tidal estuaries. Both are open to the public for passive recre- ation, with wood-chipped walk trails and dry ground and catwalks and foot bridges in marshy areas. The Premium Conservation Area has somewhat deteriorated in the past few years as a recreational facili- ty, partly owing to insufficient interest among residents in the vicinity, but some residents have plans to reverse this trend. In addition, as will be seen below, both areas have chronic siltation and pollution problems. In addition, the south end of the 12.5 acre Hommocks athletic field abuts the Hommocks Marsh and Little Harbor Sound. The field is owned by the Town, and its use is shared by the Town Recreation Department and the Board of Education whose Hommocks Middle School is at the north end of the field. The field was built on a sanitary landfill in the 1960's and early 1970's (in the process burying the lower ends of • East Creek and Gut Creek in culverts) . Defects in covering, grading, and seeding have severely limited its recreational use but are being gradually overcome. 3. Resources a. Human Resources. Our 20,000 residents include a high proportion of entrepreneurs, managers, professionals, artists, and skilled technicians working in the New York metropolitan area -- collec- tively, animportant asset to the economy and culture of New York State. The Mamaroneck district's primary and secondary schools, supported by its strong tax base, have long been of high quality with a high percentage of college-bound students -- a resource of great long-term importance. b. Residential Real Estate. Our relatively high-income population chooses to live in this area not only because of its strategic proximity to New York City but also for its amenities, especially the aesthetic and recreational value of its Sound shore. This fact helps to account for the high value of real estate in the area. c. Recreation. Recreational facilities, part public and part private, are substantial for both active and passive recreation, much of it water-dependent or water-enhanced. Many of these facilities, because of their size and location, also have great environmental importance as absorbers of flood waters and as • 8 wildlife habitats. Their recreational uses can be summed up as follows: (1) Active sports: In addition to the facilities of the Mamaroneck school system, active sport facilities for adults and children include public baseball and soccer fields, chiefly in Flint Park; a public indoor ice rink next to Hommocks School; tennis and paddle tennis courts in Flint Park, the Town's Memorial (Station) Park, and private clubs; and three private golf clubs, two of them wholly and one partly within the Town. As befits a coastal community, water-dependent sports are well developed, including: Boating: On the Larchmont shoreline are two yacht clubs, the Larchmont Yacht Club (11 acres) and the Horseshoe Harbor Yacht Club which uses the Larchmont Manor Park Society's boathouse in the Manor Park. Their combined fleets of sail and motor craft number over 450, have an estimated value of over $20 million, and provide recreation to thousands of residents. In addition, a few members of the Larchmont Shore Club (6 acres) moor their boats in club waters, and numerous boats are docked or moored atprivate residences along the shore. The Larchmont Yacht Club has made Larchmont famous as one of the most important yachting centers on the American east coast, increasing the attractiveness of this area as a place of residence for sailing enthusiasts. The area is also a market for a considerable nearby industry, especially in the Village of Mamaroneck and in New Rochelle, devoted to yacht building, maintenance and supply. r There are no public boating facilities along the shoreline in Larchmont or the Town. Some resi- dents keep their boats at the Village of Mamaroneck facility in Harbor Island nearby, although it has a long waiting list and charges a substantially higher fee for nonresidents. Swimming: Facilities include the indoor Hommocks swimming pool, shared between the school system and the Town, and open to the public; an open-air County swimming pool in Saxon Woods Park; and, for Larchmont Village residents, bathhouse facilities at the Manor Park Society's Manor Beach. Home- owners in the adjoining Map 610 area have priority rights in this facility, but the Manor Park Society makes room for hundreds of other Village residents for a season fee, first come first served. Up to 750 families have shared this 9 facility in some recent years. In addition, the • Shore Club and the Yacht Club have private beaches for members. No public outdoor swimming facility exists along the shore, but such facilities are available, at higher fees than for residents, in nearby Sound shore municipalities including the Village of Mamaroneck and New Rochelle. Fishing: Both local and deep-water fishing is done in the Sound by many boat owners in the area. In addition, there is some fishing from the shore at private residences and, subject to municipal regulation, on public property in the Premium estuary and at the Larchmont Reservoir. Restoration of shellfishing along the Sound shore, for recreational as well as commercial purposes, will depend on future steps to upgrade water quality (see paragraph h below) . (2) Passive Recreation: Much of the so-called passive recre- ation in parks and conservation areas -- walking, birding, sketching, painting, photography, nature study, etc. -- is enhanced by bodies of salt or fresh water and is in that sense water-related. The scenic beauty of the Larchmont Manor Park makes it a favorite public strolling place. For birders and students of ecology, the Premium and Hommocks • Conservation areas, and on a smaller scale Horseshoe Harbor, incubate abundant fish, shellfish, and crustaceans and are nesting and feeding grounds for many species of waterfowl and shore birds. Farther inland, the Sheldrake and Leatherstocking Conservation areas (total 55 acres) and the 60-acre Larchmont Reservoir Conservancy all contain undisturbed woodland with a varied topography of open water, wetlands, and rocky heights, the habitats of abundant wildlife. d. Historic Buildings and Sites. In Larchmont and the unincorporated area are many sites of historical, architectural, and cultural interest, including a score or more of private houses a century or more old. A few of these date from the Federal period and many from late Victorian times. The oldest surviving structure in the area is a private house at 4 Pryer Manor Road, built in 1775 on the site of an earlier mill house. It has been recognized by the Daughters of the American Revolution as a historical Landmark, as has the Larchmont Public Library, built on the site of the original Samuel Palmer house. The Manor House, built in 1790 for Peter Jay Munro, still stands at the head of Prospect Avenue. Beside the Post Road outside Larchmont's municipal building is a milestone bearing the carved inscription "21 miles from New York", erected in 1804 along what was then the Westchester Turnpike. Nearby are two small • cemeteries of early date, one of them established by Quakers in 10 the early 18th century -- the oldest known relic of European • habitation in our community. The house at 86 Weaver Street, now a private residence, was built prior to 1808 to house the first public school in the Town of Mamaroneck, organized under the New York State public education law of 1795. Many structures of late 19th century vintage are in a neighborhood known locally as the Manor. It is defined by Town of Mamaroneck Map 610, the area once owned by the Larchmont Manor Company, predecessor of the incorporated Village of Larchmont. In addition to private residences, notable structures in this area include the clubhouse of the Larchmont Yacht Club, built in the 1880's, a remarkable show piece of late Victorian design; and Fountain Square in Larchmont Manor, turned over to the Larchmont Manor Park Society in 1892 and redesigned by Larchmont architect Walter C. Hunting. It is a distinguished landmark and was once the center of the incorporated Village of Larchmont. The Larchmont Manor Inn, opened in the Manor in 1893, the year the Village was incorporated, has been nominated for listing on the National Historic Register. It is believed likely that traces of post-Revolutionary building sites remain on the Mamaroneck side of the Larchmont Reservoir property. This possibility is being investigated. • Some other sites in the area bear traces of prehistoric Indian habitation. Indians are believed to have built a weir at the site of the present Premium Millpond dam, which itself dates from 1801. A south-facing rocky cave adjacent to Pine Brook Park may have been used by Indians as a blind for hunting animals. Some large erratic boulders in the area, including the one that gave Rockingstone Avenue its name, are believed to have been objects of Indian worship. e. Scenic Resources. The exceptional scenic value of the Larchmont Manor Park is described above. In addition the Premium and Hommocks areas, aside from their other values, are scenically important. This is especially true of the Premium River, including the Premium Marsh and Millpond. It is one of the most sought-after residential environments along our coast, with scenic waterscapes visible throughout its length as the Premium winds its way to the Millpond. On a smaller scale, the same values are found in the Hommocks area. In addition, numerous other sites not visible from the shore, including Fountain Square, Memorial (Station) Park, the Sheldrake River and Leatherstocking Trail Conservation area, the Larchmont Reservoir Conservancy, the three local golf courses (Bonnie Briar, Winged Foot, and Hampshire) , and the Brookside Drive-Gardens Lake area, contribute significantly to the scenic quality of this portion of • the Coastal Zone. 11 f. Living Resources. Our2 land and waters nourish a wide diversity • of fish and wildlife. Bird species are especially numerous owing to our coastal location and our transitional climate pattern caused by the meeting of the Labrador Current and the Gulf Stream. Birds, both resident and migratory, and land animals find food and shelter in the wide variety of trees, shrubs, lawns and rocky structures on private land and suburban streets, and in the more protected open space of our parks and conservation areas. Fish, shellfish, crustaceans, amphibians, and reptiles breed in the nutrient-rich ponds, salt marshes and watercourses, providing food for gulls, shore birds, winter- sheltering ducks, geese, and swans, and land animals, as well as some recreational fishing. (See part 4 of this Inventory for details.) Development in recent years has impacted the region's wildlife in numerous ways: for example, with the shrinkage of open land, increasing numbers of crows, raccoons, and skunks have invaded suburban areas. As will be seen below, inappropriate or careless development poses serious threats to many of the values species that breed and thrive in our area. This threat is especially significant in two saltwater wetlands located in the Premium and Hommocks Conservation Areas. These two areas, largely because of the importance of salt marshes as spawning grounds for fish and other aquatic species, were des- • ignated locally over a decade ago as conservation areas under the jurisdiction of the Town Conservation Advisory Commission; but this status cannot fully protect them from environmental damage -- in fact, they have already been substantially damaged by siltation, erosion, and pollution. The ecological and commercial value of the many species of fish, shellfish and crustaceans in these two areas, and the importance of the bird species that feed on them, would in our opinion justify designation of both these areas by DEC as "significant coastal fish and wildlife habitats" in need of protection, or, at a minimum, their designation for the same purposes under the present program as "locally important wildlife habitats." g. Open Space. (See Map 4) In the watersheds along the highly developed Westchester shore, open space serves several major purposes including wildlife habitat, recreation, aesthetic values, and -- of special importance in this area -- flood control by absorbing and retarding runoff in wet weather. Three 2See wildlife inventories in Appendix II-A. 12 jurisdictional cftegories of open space are involved, totaling • about 722 acres. (1) Within the Village of Larchmont, open space includes 37 acres of public parks; the 12.65-acre privately owned Larchmont Manor Park; and- 17 waterfront acres occupied by the Larchmont Yacht Club and the Larchmont Shore Club -- a total of about 67 acres. (2) Within the Unincorporated Area of the Town, open space totals some 595 acres, as follows: -- About 97 acres3of parks and conservation areas, namely: the Sheldrake River, Leatherstocking Trail, Hommocks, and Premium River Conservation Areas; the handsomely landscaped Memorial Park; the Gardens Lake; and the Hommocks playing field. In September 1984 all these open spaces owned by the Town were formally dedicated by the Town for parks and recreational use. -- Two large golf courses and part of a third, totaling 428 acres. The Bonnie Briar and Winged Foot golf clubs are in northern part of the Town. Some 8 acres of the Hampshire Country Club golf course extends west from the Village of Mamaroneck into the unincorporated area near the Hommocks Conservation Area. • -- About 70 acres of private undeveloped land with devel- opment potential lying between the Bonnie Briar and Winged Foot golf clubs. A proposal for development of a portion of this area was presented to the Town Planning Board in 1984. - f'1ektcv,k . f( ertar ( 3These figures do not include 187 acres of parkland in the northeast corner of the Town, which form part of the County-owned Saxon Woods Park. These three watersheds are the focus of drainage-related problems discussed in Parts 6, 7, and 8 of this Inventory. As the drainage boundaries shown on Map 1 make clear, a fourth watershed, that of the Mamaroneck River, drains an area of about 1 square mile in the northeastern portion of the Town, about half of it consisting of a part of the Saxon Woods County Park. Immediately downstream from this area is the Village of Mamaroneck, which has chronic problems of residential flooding in this watershed during rainy periods. Part of the Town area in this watershed is in a residential (R-20) zone in which further residential development is planned. The zoning and topography of the area are such that it is not believed that this development, properly controlled, will aggravate downstream flooding. Town authorities are aware of the interest of the Village of Mamaroneck in this matter and take care to give that Village advance notice of all Town land use proceedings affecting this area. • 13 • (3) In a special category is the 60-acre Larchmont Reservoir - • James G. Johnson Conservancy. It is owned by the Village of Larchmont but is located partly in the unincorporated area (12.76 acres) with the remainder in New Rochelle. In October 1984 this property was dedicated in perpetuity by the Village for specified public purposes including conservation, nature study, wildlife preserve, flood control, standby water supply, and environmental and historical education. Since 1975, when the Reservoir ceased to serve as the Village's regular water supply, the property, with the concurrence of the Village, has been maintained as a conservation area and flood control facility by the tri-municipal Town of Mamaroneck Conservation Advisory Commission and the Town conservation staff, with additional support since 1981 from the Friends of the Reservoir, Inc. , a private nonprofit organization. Cooperation has been established with the City of New Rochelle in regard to recreational and educational use and policing of the property. Following the dedication of the property, the Village's oversight of these arrangements has been strengthened by creation of the Village of Larchmont Reservoir Committee, which makes recommendations to the Village Board on policy and projects relating to the property and works with the above bodies in the initiation and review of proposals concerning it. 411 It is useful to see the flood-control aspect of open space in a wider perspective since political boundaries in our area cut across nearly all the area's watersheds. Open space in New Rochelle and Scarsdale retards flooding in the Village and the unincorporated area, while open space in the unincorporated area helps to retard flooding of the lower Mamaroneck River in the Village of Mamaroneck; and conversely; open space on the Village of Mamaroneck side of the Hampshire Country Club retards flooding and erosion in the Hommocks Marsh. Intermunicipal cooperation in the preservation of existing open space is thus of high importance to all these communities. Pressure for residential or commercial development in the Westchester Sound shore area's remaining open space cannot be wisely balanced against other important long-term considerations unless the municipalities concerned, in cooperation with the County government, develop common approaches to zoning, planning, public ownership, and other means of control. h. Water Resources (see Map 5) . (1) Fresh water: A considerable network of lakes, small ponds, wetlands and watercourses in our coastal area functions as a wildlife habitat complex (see part 4 below) and as an important resource for quiet recreation. In addition, as noted in paragraph g-3 above, the Upper Reservoir (Sheldrake Lake) serves • the important function of standby water supply in case of severe 14 water shortage. It is classified by New York State as "A, • suitable for all uses," while the Lower Reservoir (Goodliffe's Pond) is classified "C", suitable for uses other than consumption and primary contact recreation. The Sheldrake River is classified D due to intermittent flow and inability to support propagation of fish. Gardens Lake is classified C. This community's water supply comes from the New York City system. However, recent reports by Westchester County authorities of increasing demand on the New York City system suggest that reactivation of the Upper Reservoir as an emergency water supply at some time in the not too distant future is a distinct possibility. Under County plans, filtration and other operational costs in such a contingency would be borne by the County. However, it is incumbent on, and in the interest of, the Village of Larchmont, as owner of the Reservoir property, to do its best to maintain Sheldrake Lake in its present water classification "A", not only for standby water supply purposes but also in order to avoid deterioration of the Reservoir property as a wildlife habitat and recreational and educational area. (2) Salt water: The deep waters of Long Island Sound off our shores are classified SA, suitable for all salt-water uses; but several wide areas near the shore, including many shellfish beds, are classified SB, which excludes human consumption of shellfish. • Shellfishing along these shores, once a significant commercial and recreational activity, has been banned for many years mainly because of organic pollution from sewage. The Premium Millpond is classified I, which excludes primary contact recreation (swimming) as well as shellfishing. A further threat to the quality of these waters is the nonpoint discharge of organic nutrients--fertilizers, animal wastes, decomposing leaves and grass cuttings, etc.--into coastal waters via stormwater runoff. These substances, together with sewage overflow, stimulate algal growth and deplete the oxygen in the water which is essential to fish and other forms of life. The above classifications do not reflect the frequent pollution crises described in later sections, caused by the flow of raw sewage into coastal waters after heavy rains, rendering these waters temporarily unfit for swimming; nor do they reflect the serious, though temporary, effects of oil spills such as those that have occurred repeatedly in the Premium-Pine Brook system. i. Organizational Resources. Larchmont and the Town of Mamaroneck can draw on a wide array of local organizational resources and programs in formulating and carrying out their joint Local Waterfront Revitalization Program. Among these are: • (a) Official bodies: 15 -- Town Council and Village Board of Trustees • -- Village - Town Planning Board Village Planning Commission -- Town and Village Zoning Boards of Appeals -- Town and Village Engineering, Highway and Parks Departments -- Town Conservation Department -- Joint (Village and Town) Sanitation Commission -- Town of Mamaroneck Conservation Advisory Commission (representing Town, Village of Larchmont and Village of Mamaroneck) -- Town Recreation Commission -- Village Recreation Committee -- Village Beautification Committee -- Village Parks and Trees Committee -- Village Reservoir Committee (b) Nongovernmental bodies: -- The LIFE (Local Involvement for Environment) Center, our main resource for environmental education and awareness. It is mainly supported by membership dues, but also receives budgetary contributions from the Town and the Villages of Larchmont and Mamaroneck. -- The Garden Club of Larchmont • --_ Friends of the Reservoir, Inc. The Larchmont Manor Park Society -- The Larchmont Yacht Club -- The Larchmont Shore Club -- The Horseshoe Harbor Yacht Club -- The Larchmont Historical Society -- The Mamaroneck Historical Society -- Local Boy Scout, Girl Scout, and Camp Fire Girl troops, active in anti-litter efforts (c) Educational and informational: -- Local public and parochial schools and their associated PTAs, active in environmental education and recycling programs -- The Larchmont Public Library -- Newspapers: (1) The Gannett Westchester Newspapers' New Sound edition, produced in New Rochelle. It was substituted in summer 1985 for three long-established dailies of the Sound Shore including The Daily Times of Mamaroneck, under whose logo it still appears locally. It provides limited coverage of local affairs. (2) The weekly Sound View News, distributed gratis. It provides more extensive local coverage for New Rochelle, Larchmont and Mamaroneck. • 16 j . Conclusion concerning resources. Awareness of the social-economic, ecological, and institutional resources just described is essential to an understanding of the problems and possibilities of the Larchmont-Mamaroneck Coastal Zone. Our success or failure in protecting and enhancing the quality of, and promoting access to, the Coastal Zone will go far to deter- mine the economic and demographic future of our community -- as well as of nearby communities which share in its economic and recreational life. On the one hand, excessive or poorly regulat- ed development can -- and in many ways already does -- threaten our waterfront and its resources with flooding and other destruc- tive effects. On the other hand, it is primarily the existence of a highly developed, high-value residential environment, of medium population density and with convenient commercial and transport facilities, that has created a tax base sufficient to make protection of our scenic, ecological and other coastal values possible and affordable. What is needed is a prudent and sustainable balance among ecological, economic and social values and concerns. 4. Fish and Wildlife Habitat Narrative This narrative describes several areas which are proposed for designation as "significant coastal fish and wildlife habitats" or as "locally important wildlife habitats. " • a. Location and description of habitats. (see Map 3A) Three habitats areas are described here, two centering on coastal salt marshes and the third on a chain of freshwater wetlands and lakes within the coastal zone. Although geographically distinct, they are interrelated in that many species, especially waterfowl, "commute" among various feeding grounds in this region including these three. Thus they serve as links in a surviving chain of wildlife habitats in the highly developed Sound shore region extending along southeastern Westchester County from the New York City line to coastal Connecticut. (1) The Premium salt marsh complex is located in an inlet of Echo Bay, straddling the boundaries of the City of New Rochelle, the Town of Mamaroneck, and the Village of Larchmont. It centers on the Premium River from just above the confluence of that river with Pine Brook down to its outlet to the Sound via the Premium Mill Pond dam. It includes the Town's 10-acre Premium River Conservation Area; about 1 acre of connected wetland at the downstream end of Pine Brook in the Village of Larchmont; the 40-acre Premium Millpond; and two associated, formerly connected wetlands on the New Rochelle side: the 5.4-acre Pryer Manor Marsh and a 1-acre wetland between Dillon Road and Emerson Avenue at the foot of the Chester Place heights. Its total area of land and water is thus about 56 acres. • 17 (2) The Hommocks salt marsh complex is located at the head of 411 Little Harbor Sound, a tidal inlet in Larchmont Harbor. It straddles the boundaries of the Village of Larchmont, the unincorporated area of the Town of Mamaroneck, and the Village of Mamaroneck. Its main component is the 5-acre Hommocks Conservation Area, of which 3 acres are tidal wetlands. Entering the marsh at the northwest corner of the conservation area are the outfalls of East Creek and Gut Creek, which flow through pipes under the Hommocks athletic field and drain a watershed which is fully developed with residential and business properties and major thoroughfares. The complex also includes two smaller areas. One is a strip, about 2 acres in area, of partly marshy, partly wooded ground skirting the south end of Flint Park in the Village of Larchmont from the East Creek outfall to the western boundary of the park. This strip forms the north bank of Little Harbor Sound and is ecologically associated with the Hommocks Marsh. The third component is an 8-acre segment of the Hampshire Country Club golf course, lying east of Hommocks Road, through which Gut Creek flows on the surface. Both of the above habitat complexes are rich in wildlife and include areas of open ground, woods, meadow edges, salt marsh, intertidal flats, and open water, either salt or brackish. Water depths are shallow. Tidal fluctuation is • slower in the Premium complex because of the dam between it and the Sound. Both areas are surrounded partly by parks and playing fields and partly by residential and commercial development. As will be seen below, they have survived considerable adverse impact from their surroundings. (3) The Larchmont Reservoir-Sheldrake-Leatherstocking Freshwater Wetland Complex is located in the Sheldrake watershed about two miles inland. Its total area is about 86 acres. Extending eastward from the Larchmont Reservoir across the unincorporated area to the Village of Mamaroneck boundary, it forms a network of large and small open spaces and connecting habitat corridors to the north and south of the Sheldrake-Leatherstocking Conservation area, which forms its main east-west axis. To the north, the habitat corridors follow the two branches of the Sheldrake River and its small tributaries, and include wetlands, springs, ponds, flood plains, and streams flowing into the Sheldrake's two branches from locations in or near the Bonnie Briar and Winged Foot golf courses. South of the Conservation Area, the Complex includes the Sheldrake and its two branches, the Badger Sports Club, Gardens Lake, and the small Revere Road Conservation Area next to the Village of Mamaroneck border. (If defined solely in ecological terms, this Complex would extend well into the Village of Mamaroneck downstream and • into Scarsdale and New Rochelle along the upstream portions 18 of the Sheldrake watershed. Only those sections within our • proposed Coastal Zone boundary are included here.) The main components of this Complex are as follows: (a) Of the 60-acre Larchmont Reservoir-James G. Johnson Conservancy, 12.76 acres are within our proposed Coastal Zone boundary, including the lower half of Goodliffe's Pond, the lower dam and spillway, a section of the Sheldrake River (West Branch) below the spillway and west of Weaver Street, and surrounding woods and meadow. Although the larger part of the Conservancy lies in New Rochelle, the entire Conservancy (see part 3-g above) is owned by the Village of Larchmont, dedicated by it to public uses including wildlife preserve, and maintained by agencies of the Town under Village supervision. The Conservancy's two lakes (about 25 acres) and surrounding deciduous woods, rocky upland, marshy low ground and meadow, make it an excellent habitat for a wide variety of aquatic and land birds. In 1985 a fence was built across the base of the smaller peninsula near the south end of Sheldrake Lake, creating a protected nesting area for wild birds. Plans are well advanced for the erection of a nesting pole for ospreys on Goodliffe's Pond. • (b) The Sheldrake-Leatherstocking Conservation Area com- prises 54 acres of rocky, deciduous woodlands, of which 13 acres are freshwater wetlands. It is intersected by both branches of the Sheldrake and by two tributaries to them, as well as by two tributaries to the main stem of the Sheldrake near the Village of Mamaroneck line. (c) All the habitat corridors connecting the above areas follow the Sheldrake or its tributaries and include the wetlands and other features described above. Their total area is estimated at 25 acres. Note: In addition to the above, a fourth habitat complex merits description in this inventory even though, because it is sufficiently protected under the State Tidal Wetlands Law, it is not formally included among the habitat complexes listed in this program. This is the intertidal and littoral zone extending from Larchmont Harbor westward along the Sound shore to and around Premium Point. Included in it are the shores of the Larchmont Manor Park, Horseshoe Harbor, the Larchmont Shore Club, and intervening private and public shoreline properties. This complex includes rocky coves in the Manor Park-Horseshoe Harbor area, several of • which contain patches of salt marsh peat and 19 grasses, as well as the sandy beach called Pirate's Cove. Biologically rich rocky and sandy beach continues off the Shore Club and Premium Point Beach. This habitat nourishes a wide variety of fish including striped bass, bluefish, flounder, mackerel, blackfish, menhaden, alewives, eels, porgies, minnows, pipefish, and seahorses; also horseshoe crabs, lobsters, hardshell and softshell clams, oysters, mussels, and snails. Bird species include several species of gulls, herons, kingfishers, and shorebirds that feed on the above organisms, as well as swans, geese, ducks, and other species that feed on marine vegetation. B. Fish and Wildlife Values. In this narrow, densely developed region of southeastern New York State, between the fjord of the Hudson River and the arm of the sea that is Long Island Sound, all surviving patches of relatively undisturbed open space and wetland -- three of which, described above, are in our portion of the Coastal Zone -- are vitally important to a great diversity of fish and wildlife, both resident and migratory. Lists of bird, land and aquatic species found in these three habitat complexes are given in Appendix A. The discussion below deals only with some of the more notable species. Unless otherwise stated, the species mentioned are found in all three habitat complexes. Fish: The Premium and Hommocks areas are nurseries and feeding areas for bluefish, winter and summer flounder, eels, blackfish, mackerel, menhaden, weakfish, silversides, alewives, and cod. Fish at the Reservoir include large-mouth bass, yellow perch, sunfish, eels (which migrate upstream from salt water) , brown bullhead- catfish, carp, and shiners. Other aquatic species: Diamond-back terrapin breed in the Hommocks Marsh, and snapping- turtles in the Reservoir. Blue • crabs also formerly bred in the Premium and were caught there for food; it is hoped that they may return as water quality improves. Among shellfish that breed in both areas are ribbed and blue mussels; hard, soft-shell, and razor clams; oysters and scallops. However, because of water pollution the waters of the Premium area have not been certified for shellfishing -- once a common activity there -- in recent years. Horseshoe crabs, now on the endangered species list, breed in the Premium River. Naiads, a freshwater mussel, breed in. the lower Reservoir -- proof of the quality of its water, since this species is especially sensitive to pollution. Birds: Many bird species use these habitats as nesting areas, and still more use them as feeding grounds, either as residents or in migration or as casual visitors. Nesting species include, in all three areas, the black-crowned night heron, ring-necked 20 pheasant, mallard, Canada goose, mute swan, and killdeer. Also • nesting at the Reservoir are the snowy egret, wood duck, and green-backed heron. Feeding species in all three areas include at least eight heron species: the cattle egret, snowy egret, great egret, great blue heron, green-backed heron, black-crowned night heron, yellow-crowned night heron, and American bittern; and another long-legged wader, the glossy ibis. Migratory visitors feeding in all three areas include large numbers of black ducks and, in recent years, at least one osprey in each area. Between late October and April, the following wintering waterfowl feed in these areas: common loon, American coot, greater scaup, lesser scaup, shoveller, mallard, Canada goose, mute swan, ruddy duck, bufflehead, American widgeon, common goldeneye, canvasback, common merganser, hooded merganser, and red-breasted merganser. Grebes and pintails are casual visitors. Use of these areas by waterfowl in winter is influenced by the extent of ice cover from year to year. Normally most feed in the open water of the Millpond in midwinter; then, with the retreat of the ice, larger numbers invade the wetlands before migrating north. Other bird species seen in -- and in many cases nesting in -- one or more of these three areas include many of the passerine species common in the American east; the belted kingfisher; crows (black and fish) ; blue jay; five hawks (red-shouldered, marsh, kestrel, merlin, osprey) ; four gulls (herring, great black-backed, ring-billed, laughing) ; six woodpeckers (common flicker, pileated, red-bellied, yellow-bellied sapsucker, hairy, and downy) ; three swallows (tree, bank, and roughwinged) ; four wading birds (lesser yellowlegs, greater yellowlegs, spotted sandpiper, semipalmated sandpiper) ; meadowlark; and, as rarer visitors, the snowy owl, black skimmer, clapper rail, Virginia rail, and American pipit. On one occasion a Eurasian fieldfare appeared, drawing bird enthusiasts from near and far. Land animals: Aside from the common rodents, muskrats breed in the Premium area and are also found in the Reservoir-Sheldrake- Leatherstocking area. Among other mammals found in the Reservoir area are the short-tailed shrew, North American field vole, white-footed mouse, woodchuck, opossum, striped skunk, raccoon, and red fox. Uses of the above: The uses of the fish and wildlife species described above by people in our area, or nearby, include some commercial exploitation (mainly lobsters) , but more important by far are recreational, educational, scientific, aesthetic and ecological values. There is some sport fishing offshore in addition to commercial fishing, the latter being based on nearby ports, not in our area. There is some land-based fishing from shoreline clubs and residences and from the "Red Bridge" between the Premium River and Millpond. Hunting is not allowed in • 21 Larchmont Harbor because of the proximity of residential areas, but there is some duck hunting offshore from Premium Point. Most important are those recreational uses classified as "pas- sive" -- birding, photography, nature study, etc. Much of this activity has educational value, and in some cases scientific value as well. LIFE Center naturalists conduct frequent nature walks in all three areas for school groups and adults. Annual Audubon bird counts are also conducted there. Several ecological studies of these areas, assigned as educational projects at the State University at Purchase, the City University of New York, and Mamaroneck High School, have had scientific value. One of these, a study of foraminifera in the Hommocks and Greacen marshes, led to an invitation to the student author to visit Dr. Ruth Patrick of the Philadelphia Academy of Science; and a Mamaroneck High School student's study of horseshoe crabs in the Premium River won a Westinghouse Science Award. Other studies of this type are planned at the College of New Rochelle. No less important, although difficult to assess, is the contribu- tion these three areas make to the balance of nature in this highly developed land and seascape at the western end of Long Island Sound. Spawning fish and lobsters (and, it is hoped, crabs and shellfish once again) not only contribute to the commercial catch in this part of the Sound, but provide food for many beautiful and useful species of shorebirds. Insect-eating birds that breed in these habitats help to control insect pests throughout the coastal area, reducing the need for chemical insecticides. c. Sources of information. See Appendix II-B. 5. Adverse Conditions: Introductory Observations The problems of our coastal zone, unlike those in many industrial communities, are not primarily economic. There is no industry on our waterfront. There is little local unemployment: most of our employed residents commute to work elsewhere, and most of those who work in Larchmont's retail and service establishments reside elsewhere. Urban blight is not a serious problem, although some of our older apartment . units have deteriorated and some commercial structures along the Post Road and Palmer Avenue are in need of a face lift. Despite a normal degree of tax resistance, municipal and educational services remain strong, and there is a well-developed "safety net" of local governmental, County, and volunteer social services. Environmental constraints, on the other hand, are serious and increas- ing. As in other highly developed areas, these problems result primarily from many decades of residential and commercial development without much thought being given to environmental impact. In many cases, inadequate provision was made for sanitary sewage disposal and • 22 storm water drainage, and for maintaining a prudent balance between . the built environment and the remaining open space. Developers, while striving to produce "floodproof" structures in areas known to be flood-prone, gave little if any thought to the flooding that their alteration of the landscape could inflict on neighbors downstream; nor were such effects sufficiently considered by municipal planners. These conditions were aggravated by taxpayers' natural wish to broaden the tax base by more intensive zoning and exploitation of remaining open land. The price is now being paid in flooding, ero- sion, siltation, and pollution of ground, water and air, causing or threatening serious damage to property, to public amenities, and to local ecosystems, including the fish and wildlife habitats discussed in part 4 above. In addition, many adverse effects take place during the construction process. Land-clearing and building projects, lasting for months and - sometimes for years, are important causes of erosion, siltation, and pollution, especially downstream from the construction site, due to inadequate management practices to control these side-effects. It cannot be too strongly emphasized that these conditions have arisen not only within the political jurisdiction of the Village and the Unincorporated Area, but also in nearby upstream communities -- parts of New Rochelle, Scarsdale, White Plains, and the Village of • Mamaroneck -- whose waters flow through the Pine Brook, Sheldrake, and East Creek watersheds into the unincorporated area and the Village of Larchmont. Overbuilding of housing, streets, shopping malls, parking lots, etc. , in recent decades has been a general practice through most of the geologically shallow watershed whose downstream coastal section our two municipalities occupy. Our community consequently receives the brunt of flooding, siltation and pollution from a wide area of overbuilding upstream. A further intergovernmental dimension of our problem arises from the fact that the sanitary sewers in our community feed into the County sewage treatment plants in New Rochelle and the Village of Mamaroneck. To succeed, therefore, our LWRP must include not only adequate pol- icies and programs within our own jurisdiction but also effective measures to obtain the cooperation of upstream and neighboring commu- nities, both directly and through the channels of State and County government, in order to cope with problems of storm water runoff, sewage, and pollution. In the sections that follow, discussion of these adverse conditions centers first on certain key localities in our community; then on general problems affecting the community as a whole (see Map 6) . 6. Problem Localities: The Pine Brook-Premium Watershed Of the three watersheds that drain our coastal zone, the most westerly 23 - • one is drained by Pine Brook, which originates in northern New Rochelle. Flowing underground, passing beneath City Park, it enters the Unincorporated Area at Fifth Avenue, crosses under the New England Thruway and the residential Pine Brook section, then surfaces south of the Post Road. it flows southward a quarter of a mile to join the Premium River, which also originates in New Rochelle. An extensive salt marsh surrounds the confluence of the two streams. The river then winds its way to the Premium Millpond and thence to the Sound. The Pine Brook-Premium watershed drains a considerable part of New Rochelle and of the western portion of our community, including several low-lying residential sections which are severely impacted by flooding. Other problems in these areas are sewage backup, siltation and oil pollution. Four areas in particular require comment: a. Larchmont Hills. This subdivision, bordering North Chatsworth Avenue north of the Thruway, overlies a covered eastern tributary of Pine Brook. Despite reconstruction of a faulty sewer in 1978 (a sag had developed due to settlement of marshy soil) , sanitary sewers continue to back up during heavy rains such as those of Spring 1983, and basement flooding contaminated by raw sewage is common. The main causes have been described as follows: (1) long-standing illegal connections of residential storm drains and basement sump pumps into the sanitary sewers (a widespread way of saving construction costs) ; (2) substantial leakage of storm water into sanitary sewers through broken pipes or vent holes; • (3) inadequacy of the New Rochelle treatment plant, despite its recent enlargement, to handle the storm-swollen sewage flow from Larchmont. The consequence of these conditions is that the New Rochelle plant often shuts down its Fifth Avenue pumping station during heavy rains, leaving sewage to back up in the streets and basements of Larchmont Hills. We know of no plans for further expansion of the New Rochelle plant. Yet the problem cannot be solved without either doing this, or repairing defective sewers, or shutting off illegal sewer connections -- or a combination of all these remedies. b. The Pine Brook area. This residential neighborhood, overlying the covered portion of Pine Brook just north of the Post Road, has been subject to ever-increasing flooding and sewage backup in recent years. The problem has both upstream and downstream causes. Upstream, it stems from construction since World War II - some of it local but most of it in New Rochelle - which destroyed much of the open land in the Pine Brook flood plain. Downstream, the causes are several: siltation in the Premium River; erosion of the stream bank, further clogging a channel already narrowed by filling operations; and sluggish tidal cleansing of the river due to the dam at the mouth of the Millpond -- all resulting in a choking of the river by sediment at the confluence of its two branches, causing upstream waters to back up. The effect can be seen in Shadow Lane and Pine Brook Drive which become a lake • 24 during heavy rains, flooding nearby basements and yards; also in • rear yards along Mayhew Avenue, where sewage backup is frequent in heavy storms. c. The Lower Premium River, Marsh, and Millpond. This area is the central focus, the most beautiful section, and the most ecologi- cally important part of the Premium Basin. It suffers from both siltation and chemical pollution. Some of the silt washes down from the Boston Post Road and from dead end streets abutting the east bank. Another source has been a large commercial nursery and garden supply establishment fronting on the Post Road and abutting the west bank. For years a high, inadequately secured vertical embankment within the nursery grounds eroded silt into the riverbed. This, and the visual blight seen by homeowners nearby, have given rise to many complaints. Some corrective actions have been taken in response to requests by the Village, but the potential remains for conflict between commercial and environmental and/or aesthetic considerations. The other main environmental insult in this area is pollution of the river by oil and gasoline. Two major incidents occurred in the summer of 1983. In one of these, several thousand gallons of heating oil entered Pine Brook, coating the river banks and severely polluting the marsh, with heavy damage to fish and other species. The source turned out to be an antiquated and leaking fuel tank in a New York State public housing project on Fifth . Avenue in New Rochelle. The other incident was caused by dis- charge of waste oil from an apartment building in the unincor- porated area. Despite prompt assistance from the State Depart- ment of Transportation, which placed several oil booms across the waterway, much of the pollution made its way down the river to the Millpond, coating the banks and damaging fish and bird life as it went. The damage, both biological and visual, will take years to clear up. Incidents of sewage backup have also been reported in this section, especially near dead-end streets abutting the Premium River. Some relief was reported in 1984 after supplementary pumps were installed. Many lesser pollution incidents have occurred in the Premium Basin over the years. Most have been traced either by DOT specialists or by our Town water quality consultant, Robert Hohberg. The main sources are leaking oil tanks in apartment houses; leaking gasoline or waste oil tanks in service stations and taxi companies; and surreptitious disposal of waste oil in storm drains. These problems exist in all three municipalities -- New Rochelle, the Town, and Larchmont Village. Although owners usually comply with orders to repair or replace faulty tanks after the damage is done, routine inspection to assure preventive maintenance has been grossly inadequate, and instances of illegal disposal have been hard to trace. • 25 Two additional points should be noted. First, the condition of • the Premium Conservation Area has deteriorated in recent years, whether because of inadequate neighborhood interest and support or a reduced priority in the Town conservation program, or both. An oil leak has been reported at the point where the Premium River enters the marsh. Litter has increased, the catwalk in the marsh is in disrepair and partly dismantled, and the area is less frequented than in the past. The deterioration can be reversed, and some interest in doing so has been shown recently by nearby residents. Finally, the natural barrier of Premium Point Beach at the narrow eastward neck of Premium Point provides important protection for the Millpond and adjacent residential areas against erosion and other storm damage during coastal storms. The beach itself, however, is vulnerable to erosion. It should not be built on, and will require careful monitoring and maintenance to preserve it. d. The Upper Premium River, extending from Dillon Road to Pryer Manor Road and nearby streets along the Town's boundary with New Rochelle, is the fourth problem location in the Premium watershed. Flooding of Pryer Manor Road during storm high tides has been a common experience for decades; but the water storage capacity of the surrounding marsh used to help to keep flood damage within narrow limits. In 1970, however, despite • residents' protests, a part of this marsh lying within the Town of Mamaroneck was approved as a building site, destroying parts of the marsh on both sides of Dillon Road. Now, during storm high tides and heavy rains, the 36 homes in this area are completely cut off by floods from fire and ambulance service over either Dillon Road or Pryer Manor Road. The above discussion is by no means a complete account of flood-related problems in and near the Premium estuary. Sewage backup, for example, occurs in a number of nearby places. Basements of homes near the dead ends of Chestnut, Willow, and Oak Avenues suffer from backed-up sewage whenever, during storms, the County sewage treatment plant in New Rochelle closes the intake valve in the sewer that drains that area. And near the west end of Park Avenue, it is reported that backed-up sewers sometimes flow with such force that they dislodge a manhole cover in the street. Raw sewage has also appeared in plumbing facil- ities in the Manor Park bathing pavilion, requiring installation of a shutoff valve for use during rainy periods. Aside from sewage backup, leakage from defective sewer pipes may also be a problem in this area. Although we have no current information on the coliform count in the Premium Marsh, it is important to note that the sewer pipe draining the Premium area runs under the Premium River and the Premium Marsh. Its proper • maintenance is highly important to the ecology of this area. 26 7. Problem Localities: The Sheldrake Watershed . Covering portions of White Plains, Scarsdale and New Rochelle, the Sheldrake watershed is drained by numerous small streams which join to form the west and east branches of the Sheldrake River. The West Branch rises in northeastern Scarsdale about 100 yards from the White Plains border (in fact, a small built-up area in western White Plains is drained by the Sheldrake) ; it then flows south across Scarsdale into northern New Rochelle, entering the Town of Mamaroneck at the Larchmont Reservoir. The two fingers of the East Branch also rise in Scarsdale and flow southward between the Winged Foot and Bonnie Briar golf courses, then join south of Fenimore Road in the Sheldrake Conservation Area. The East Branch then continues southward to join the West Branch east of Weaver Street below Valley Stream Road. The river then flows southeast down a steep slope on Brookside Drive, through a series of small waterfalls to Gardens Lake (the "Duck Pond") . Thence it turns northeast, flows under the New England Thruway, then enters the Village of Mamaroneck to join the Mamaroneck River which empties into Mamaroneck Harbor. The Sheldrike's problems thus affect our neighbors in the Village of Mamaroneck as well as residents of the unincorporated area. Two locations in the Sheldrake watershed present acute problems for our residents: a. The Weaver Street-Bonnie Briar area. Along Bonnie Way, Bonnie • Briar Lane, nearby parts of Weaver Street, Sheldrake Place, Sheldrake Avenue, Brookside Place, and parts of Forest and Rockland Avenues, substantial flooding and sewage backup in homes has been common during periods of heavy rain in recent years. b. The Brookside Drive area. The same type of problems has been particularly acute for residents of this hillside area. In both cases, flooding results from the reduction of the flood plain upstream in recent times and from the emptying of storm drains from higher ground nearby. Some relief from these problems has been gained since the Larchmont Reservoir, after it ceased to be used for water supply in 1975, became available for temporary storage of runoff during heavy rains. A new valve was installed in 1981 in the upper dam so that the reservoir's water level can be rapidly lowered in advance of peak runoff. This proved especially helpful during the record spring rains of 1983 and 4A Corps of Engineers project to divert part of the Sheldrake's waters through an underground pipe into the West Basin of Mamaroneck Harbor should help greatly to relieve flooding in that Village; but this project is not expected to be completed until the 1990s. 27 1984. However, the flood problem is far from solved, arising as it does from both branches of the Sheldrake. A hydrological study of the West Branch of the Sheldrake watershed, recently completed by the Westchester County Soil and Water Conservation District at the request of the Friends of the Reservoir and the affected municipalities, is expected to be a major resource in planning a more adequate solution. The action of the Village of Larchmont, owner of the Reservoir property, in October 1984, dedicating the property in perpetuity to specified public uses including flood control, has made it possible to proceed with such plans with increased confidence. The related problem of sewage backup would be alleviated by better flood control in the Sheldrake system, but a full solution may require other steps as well. Valley Stream Road, for example, is the site of a County-operated sewer trunk line. The storm-fed peak flow in that line and associated feeder lines exceeds capacity, so that during heavy rains sewage backs up into the road. The ejected sewage flows through the storm water system into the lower Sheldrake and Gardens Lake, creating a considerable health problem. Residents have urged the County to budget funds to correct this problem, but no plans to do so have yet been announced. (For other causes of sewage backup, see part 10 of this Inventory.) 8. Problem Localities: East Creek, Gut Creek, Little Harbor Sound and the Hommocks Marsh S a. East Creek drains a smaller, almost completely built-up watershed between the Premium and Sheldrake systems. Once an open waterway, it is now covered along nearly all its length. It rises in the lower Unincorporated Area between the Pine Brook and Sheldrake systems; flows under the Thruway, the railroad, Vanderburgh Park, Hall Avenue and the Post Road; reappears for about 100 yards as a highly polluted stream behind an automobile dealer's car park, then enters a large pipe which runs beneath the Hommocks playing field. There it is joined by Gut Creek, a smaller stream which also flows largely underground, drains areas to the north and east -lying partly within the Village of Mamaroneck-near lower Weaver Street, the Post Road, and the Hampshire Country Club golf course, then flows under the lower end of the Hommocks field. The two streams empty through adjoining outfalls into the Hommocks Marsh and Little Harbor Sound. A monitoring report in summer 1984 on East Creek and the Hommocks Marsh showed these waters to be severely polluted by fecal and coliform contaminants and waste oil. The oil pollution originates in street drains north of the Post Road; from County storm drains on the Post Road itself; and from an automobile dealership adjoining the open stretch of East Creek just south of the Post Road. An outfall pipe leads from the dealer's work area into the creek; moreover, the adjacent creek bank is saturated . with oil. The fecal and coliform pollution arises mainly from 28 the first two of the above sources plus purge drains leading from the nearby Hommocks swimming pool. The open section of the creek, in addition to these liquid pollutants, is chronically littered, although it is cleared of litter (as are other open-space areas in our community) by L.I.F.E. Center volunteers every April on Beautification Day. In addition to the adverse impact on the Hommocks Marsh, discussed below, the condition of this open stretch of East Creek is a small but typical case of urban pollution and casual litter turning a pleasant and ecologically valuable area into a small wasteland. Although not close to any residential area, the open section of the creek is on the edge of Flint Park and could be a pleasant place for leisurely walking, jogging, birding and nature study. Thus far it has had a low priority on the community agenda. More energetic efforts by municipal authorities to rehabilitate it would be desirable. b. Hommocks Marsh. East Creek and Gut Creek take on added importance from the presence of a salt marsh in a sheltered tidal inlet. From 1972 to 1975, Hommocks Marsh and other salt marshes in the Larchmont-Mamaroneck area were the subject of intensive study by Drs. James Utter and Paul Steineck. Their findings showed that the Hommocks Marsh had undergone major changes as a result of siltation and sanitary landfill in the construction of the Hommocks playing field, plus chemical and sewage pollution (the fecal coliform count exceeded state guidelines for bathing beaches) ; and that the production of algae and other organisms had dropped as the succession from low to high marsh proceeded. Still, however, they found the marsh functioning at a rate comparable to others more remote from suburbia, and making a net contribution to the ecosystem of Long Island Sound. As was explained in part 4 above, the Hommocks Marsh and adjacent areas merit recognition as a significant wildlife habitat. This area is also -- and, if properly managed, can increasingly be -- a pleasant setting for passive recreation. Moreover, the marsh and its ecosystem afford a superb educational resource convenient to the Hommocks School. Unfortunately, because Little Harbor Sound drains a residential area with unsolved sewage problems, and crossed by two major highways, the Marsh receives steady doses of biological and chemical pollution. Recent monitoring, for example, showed that the coliform count in East Creek is already high at the point where the creek enters the Village of Larchmont. The health of the marsh depends on effective steps to control all types of pollution in this watershed. c. Little Harbor Sound. This narrow tidal inlet from Larchmont Harbor extends eastward to the Hommocks Marsh. Its western end is the site of 32 attractive waterfront homes, most of them with dock facilities, along Quarry Road, Bishop Place, Shore Drive, Old Colony Road, Lindsley Drive, and Spanish Cove Road. In 1978 29 homeowners in this neighborhood financed a dredging project to remove silt and debris which had made Little Harbor Sound un-navigable. By arrangement with the Town, the dredge spoil was deposited as landfill to build the Hommocks School athletic field. This locality suffers from several interacting problems: con- tinued siltation, tidal flooding, and pollution by raw sewage and other wastes. The siltation problem arises partly from normal tidal scouring of the banks of Hommocks Marsh, but mainly from silt and debris carried downstream to the East Creek and Gut Creek outfalls and by several large concrete storm drain outlets at the foot of Flint Park and the Hommocks playing field. There are no catch basins to trap this material, which consequently builds up to block the inlet. Since the 1979 dredging, re-siltation nearest the storm drain outlets has reached a depth of three to four feet, already largely nullifying the effect of the dredging. The pollution problem has three main sources. The first is the runoff from commercial establishments and traffic along the Post ' Road which reaches this area mainly through the outfall pipes at the foot of Hommocks Field. The second is runoff from the Larchmont Village leaf composting area at the south end of Flint Park adjoining the marsh -- an area that is inadequately main- tained and has often been used for illegal dumping. The third pollution problem, raw sewage, comes primarily from a County outfall pipe behind Cedar Island. It is an overflow relief pipe connected to a County-operated pumping station on Flint Avenue. During heavy rains the New Rochelle sewage treat- ment plant sheds part of its storm-fed overload by shutting off the pumps at Flint Avenue, allowing raw sewage to flow into the harbor. To make matters worse, the outfall pipe terminates near the shore in an area regularly used for swimming, boating and fishing; moreover, it is in a decrepit condition, riddled with holes and loose connections. Malfunctions in the pumping station are frequent. Recently, one such mishap caused raw sewage to flow onto Flint Avenue as well as into the Sound. A second suspected source of sewage pollution is a sewer line which crosses Little Harbor Sound between the Hommocks Marsh and the Hommocks peninsula. It is uncertain whether this line is still active, and if so, whether it needs repair. This locality' s flooding problem, like that along Pryer Manor and Dillon Roads, occurs mainly when extreme high tides coincide with high winds and rain. Water then comes over the seawalls, enters lawns and basements, and in some places isolates homes until it subsides. 30 A short-term solution to these interacting problems would include . • some purely engineering steps such as installation and mainte- nance of catch basins upstream from the storm water outlets nearby; repair and relocation of sewage outfall pipes; and periodic maintenance and dredging of Little Harbor Sound. A full solution, however, should include more far-reaching steps, suggested elsewhere in this program, to control flooding, erosion, siltation, and sewage and other forms of pollution. 9. Problem Localities: The Harbor Area We have emphasized above the key value of Larchmont Harbor and its neighboring bays and inlets, both as a residential setting and as a recreational resource, especially for yachting, swimming, and fishing. Threats to swimming and fishing from water pollution are dealt with elsewhere in this inventory. We now turn to two problems that affect yachting. These are, first, siltation and other problems affecting navigation; second, inadequacy of harbor security arrangements to control vandalism, recklessness, discharge of waste and litter from pleasure boats, and other irresponsible behavior on the water. a. Navigation and dredging problems. In 1983 the Village of Larchmont participated in a Westchester County study of dredging in Sound shore harbors. In addition, in June 1983 two members of this Committee made an on-the-spot survey, at extreme low tide, of conditions in Larchmont Harbor, Little Harbor Sound, and • Horseshoe Harbor. Salient conclusions are: -- Large areas of Larchmont Harbor show definite silting, which has built up somewhat of a delta near Little Harbor Sound and other outflow areas. Maintenance dredging in some areas will be necessary to maintain the harbor's present standard of usage. Safe navigation would also be helped if a number of submerged rocks near the surface along the western shore were clearly marked for better visibility. -- Little Harbor Sound, as noted above, already shows heavy silting which has largely nullified the 1979 dredging. Construction and regular servicing of catch basins in the storm drains would greatly reduce, though it might not eliminate, the need for periodic dredging to keep the inlet navigable. -- In Horseshoe Harbor, which includes the sandy Manor Beach, the tidal drift from the beach to the yacht landing area requires dredging about every 10 years to allow deeper-draft boats to reach the dock. A recent 30-foot extension of the dock will not obviate this need. b. Harbor security. For most purposes, State law assigns responsibility for law enforcement in Long Island Sound to the . State police. The Westchester County police also have 31 jurisdiction as far as the County boundary, which runs parallel to the shore in mid-Sound. The U.S. Coast Guard is responsible for vessels in distress and for apprehending boats suspected of carrying illegal cargo. Coastal municipalities under the State navigation law have some police jurisdiction within 1,500 feet of the shore. These provisions of law do not quite fit the realities in Larchmont Harbor. The County police are not equipped to patrol the waters of the Sound. The nearest State police barracks is far inland in Hawthorne, a road distance of about 20 miles. There are no State police launches on duty along the Westchester Sound shore. State police response to calls for help in the . harbor, not surprisingly in these circumstances, has been described as slow. Emergency calls to the Coast Guard station at Eaton's Neck (19 miles away at Northport, Long Island) also often bring a slow response. Thus the main burden of maintaining order and security, and dealing with all but the most serious sit- uations in Larchmont Harbor rests either on the Larchmont Village police or on the yacht clubs. The Larchmont police, whatever their legal jurisdiction, are not very well equipped for such duty. They respond to calls for help in suspected crimes in the harbor, but have no launch and depend for water transportation either on private boats or on the Village of Mamaroneck police launch. As a practical matter, therefore, policing of all lesser violations, and the maintenance of security and order, rests with the two yacht clubs. Each has a Harbor Master appointed by the Village and empowered to issue summonses for littering, noise, or speeding. They have" little or no police training, and no powers • of arrest or capability to deal with violent crime; moreover, since both are also launch captains, they have little time for attending to minor violations. For example, they have been unable to stop the pumping of sewage into the harbor from yachts, some of them visitors from states where this practice is not prohibited (see discussion in part 10 of this inventory) . Similarly, the security guards employed by both yacht clubs to watch the fleet at night are unarmed and have no powers of arrest. The Larchmont Yacht Club has developed a plan to deal with emergencies in its area of the harbor, and the Horseshoe Harbor Yacht Club intends to do the same for its area. The two clubs will keep each other informed on harbor security matters as a part of this process. The evident flaws in these arrangements have not thus far led to a serious disaster, but they might well do so in the future. Even now they tend to impair somewhat the climate of confidence that is an essential condition of recreational boating and 32 swimming along the Larchmont shore. Better arrangements to clarify the responsibilities of all concerned, and to provide the necessary capabilities, should be vigorously pursued. 10. Area-wide Sewage Problems An earlier section noted that the frequent appearance of raw sewage in basements, streets and waterways, with adverse effects on both public health and aesthetic values, is closely linked to flooding during heavy storms. Four different ways in which this linkage occurs have been touched on at variouspoints in earlier pages. They can be summed up as follows: a. It has been a frequent practice for decades in this and other communities for private builders and even municipalities in flood-prone areas to save construction costs by connecting sump pumps, roof drains, street catch basins, etc. , not, as the law requires, with municipal storm drains but with the more accessi- ble sanitary sewer lines. A newly completed Westchester County study of sewers in this and other communities has located many such illegal connections and estimated the cost of correcting them, and the Village of Larchmont has publicly announced a corrective program; but the necessary work remains to be carried out in both municipalities. b. Many sanitary sewer lines receive storm water through unrepaired leaks and breaks, or (when laid close to or under watercourses, as some sewer trunk lines are) through sewer vent holes. c. The New Rochelle sewage treatment plant, unable to accommodate the storm-swollen volume entering its sewage trunk lines, re- sponds during storms by simply shutting off pumping stations and intake valves from sewers in Larchmont and the Unincorporated Area, leaving the sewage-contaminated storm waters to back up into basements, streets, and open waterways. d. The growing number of sanitary sewer lines from upstream commu- nities, traversing our area on their way to sewage treatment along the Sound, further aggravate the problem. Despite instal- lation of pumps, piggyback lines and alternate routes, some of these "foreign" sewer lines are still unable to handle the peak flow during rainy periods, and back up into our streets. Not all our sewage problems, however, are related to stormwater._ Three other problems are: e. Inadequate sewage treatment in the County's Mamaroneck treatment plant. This plant gives only primary treatment. Moreover, its capacity has become inadequate for the greatly increased volume in the district it was built to serve, so that it is frequently necessary to pump raw sewage into the Sound through bypass pipes during periods of peak flow. The plant is thus a significant 33 contributor to coliform pollution in nearby coastal waters, as well as to the excessive nutrient loading of these waters which poses a serious threat to the local marine ecology. These problems can be relieved in considerable part by the planned upgrading of the plant to full secondary treatment; but an expansion of the plant's capacity - in addition to aggressive action to reduce stormwater infiltration and inflow into the sewer system throughout the Mamaroneck district - may also be necessary if the pumping of raw sewage from this plant into Sound waters is to be ended. f. Suspected leakage from on-site (septic) residential sanitary systems. Some homes in this community are still served by these systems even though the entire coastal area is within public sanitary sewer districts. Many such systems have been found to be unreliable and pollution-prone. g. Finally, it should be recalled that land-based human sewage is not the only source of biological pollution. Pleasure boats off-shore frequently discharge their sewage in nearby waters -- a practice which seems to result partly from ignorance of the law and partly from lack of a clearly located responsibility to see that it is complied with. On another front, many local dog owners in spite of Village and Town sanitary ordinances and the threat of fines (yet to be applied) , continue with impunity to leave canine excrement on streets, sidewalks, parks and conservation areas throughout the community. Enforcement of existing laws against this practice is long overdue. 11. Area-wide Causes and Cures of Interacting Flood, Siltation and Sewage Problems. The threats to different parts of our three main watersheds from flooding, siltation and sewage overflow can be relieved to some extent by specific steps -- many of them suggested in earlier sections -- tailored to each local problem. In other respects, however, these problems are so wide-based geographically, and so interrelated func- tionally, that they cannot be solved in separation or on a narrowly local scale. All have arisen over many years from the natural tenden- cy, here and in other communities, to widen the tax base through rapid development while economizing on tax-supported infrastructure. The risks of this course are not immediately visible; but now the invisi- ble risks are more and more becoming visible realities, threatening both the residential attractiveness and the ecological integrity of the Larchmont-Mamaroneck coastal zone. Effective action on these interrelated problems, both within our two municipalities and in cooperation with neighboring municipalities and higher levels of government, is a major theme in later sections of this program. 12. Other Area-wide Pollution Problems: Water, Air, Noise, Litter a. Water pollution. Like communities in any metropolitan area, 34 Larchmont and Mamaroneck receive water pollution -- other than raw sewage, discussed above -- from many sources. Most of these are either far distant, such as industrial sources of acid rain, or are diffuse non-point sources nearby, especially motor vehicle traffic on local streets as well as on the major highways that traverse this area. Pollutants from all these sources include some highly toxic compounds which only sophisticated monitoring can identify and quantify. At present our local monitoring resources do not cover such substances, nor do we receive regular information about their presence in this area from higher levels of government. This is a potentially serious gap in the flow of information needed to assure water quality in our area. Among the many nearby point sources of water pollution, there may be substantial room for improved control. These sources vary widely in magnitude and in the likely costs and benefits of control, include: -- Scattered incidents, such as the furtive and illegal dumping of waste oil, paint, etc. , into storm drains and streams. -- A number of antiquated septic discharge systems in our area which have a limited life expectancy and a high pollution potential. -- Drainage of chlorinated swimming pools. -- Underground fuel tanks and pipes subject to leaks. -- The use of sand, salt or other melting agents on icy roads. -- Use of fertilizers and pesticides on lawns, golf courses and trees on both municipal and private property. It should be borne in mind that the weakness of tidal flushing action in our sheltered coastal waters aggravates the damage done by pollutants, from no matter what source, to ecological, recreational and scenic values in this area. Since an irreducible minimum of pollution from highways and other nonpoint sources, and from small, hard-to-control point sources, is probably inevitable, it is all the more urgent to control all the sources that can be controlled cost-effectively, less the total water pollution burden rise to unacceptable levels. b. Air and noise pollution. Control of water pollution requires attention to air pollution as well, since the latter -- aside from its direct damage to air-breathing organisms -- also enters ground and water as precipitation. Air pollution in our area has many chronic causes, both near and distant -- most of them largely beyond our control or influence. Some local point sources, it is true -- notably illegal smoke emissions from 35 building incinerators -- can and should be reduced by more energetic use of County Health Department police powers. A local monitoring network to spot and report violations would contribute importantly to enforcement. In our view, however, a more significant air pollution problem, and one which may prove accessible to our influence, comes from the heavy overhead traffic of aircraft approaching LaGuardia Airport. Since this same traffic is also a main source of noise pollution in our community, these two kinds of pollution can be considered together. The final approach to runway 22 at LaGuardia, a commonly used runway, carries aircraft directly over Larchmont Harbor. Many incoming flights follow this flight pattern. While passing over Larchmont, the planes are at an average altitude of 2,000 to 3,000 feet, and engines are cut back as the aircraft descend. Each plane, during its passage over our area, releases carbon and unburned kerosene pollutants, which fall on the harbor area and nearby homes. Their most visible manifes- tation is a blackish, oily film which gathers on docks, boat decks, lawn furniture, parked cars, and other exposed surfaces. They place an additional burden on human health and organic life in the area. These same aircraft also make an inordinate amount of noise as engines are throttled back or forward during adjustment to the final approach pattern. When the weather is bad and runway 22 is in use, aircraft pass over Larchmont about every 40 seconds; moreover, heavy clouds in bad weather reflect and amplify the sound. At such times, conver- sations have to be suspended while aircraft are overhead. Residents have tried several times through our elected representatives to induce the FAA to re-route the airplanes over the Sound, which we understand is the normal approach route for LaGuardia Airport. Beyond making courteous replies, the FAA has brought us little or no relief. We intend to pursue this major problem of air and noise pollution in cooperation with affected communities nearby. Other than the above, the main source of air and noise pollution in our community is the heavy vehicular traffic on the Boston Post Road and the New England Thruway, especially the latter. Noise from these sources can be acutely unpleasant for their nearest neighbors. Municipal efforts in past years have produced some action by the State to mitigate Thruway noise, but the problem remains. Many smaller sources of noise within our community, mainly from power machinery such as jackhammers, chain saws, power mowers, snow and leaf blowers, etc. , add up to a considerable din at times, creating .a widespread demand for stronger regulation. In 1985 the Village of Larchmont responded by enacting a law regulating noise from commercial gardening machinery. Litter and Dog Waste. No pollution problems are more pervasive, or seemingly more deeply rooted in suburban and urban mores, than litter and dog waste in public places. Sources of litter in our area are • 36 various: children and adults, municipal garbage trucks and commercial • vehicles, fast-food stores, wind-scattered newspapers, etc. Ordinances decreeing fines for littering and vandalism are widely ignored and only spottily enforced -- understandably, since there are seldom any witnesses to the act. Similarly, local laws requiring dog owners to clean up after their dogs are ignored with impunity in many cases. Thus a minority of offenders creates a deteriorated aesthetic and public health environment which all must endure. Anti-litter efforts in the community have been substantial, led by the Village of Larchmont Beautification Committee, the LIFE Center, and the Conservation Advisory Commission. A conspicuous community effort is the annual Beautification Day clean-up in April, with participation by students, scouting organizations, and neighborhood groups. Also, waste containers have been placed in parks and on sidewalks by civic organizations and by some businesses as a public service. A more wide-ranging approach to this complex of problems, with careful study of techniques that have succeeded elsewhere, should be an integral part of our coastal zone program. 13. Recreation: Possibilities and Limits As has already been made clear, this area has extensive resources for water-related recreation, both active and passive. Private shoreline facilities for boating and swimming are enjoyed by a substantial proportion of residents, and are used at or close to capacity. Although many residents who now lack access to such facilities would clearly like to have it, it is widely realized that possibilities for wider public access to boating and swimming along this part of the Sound shore are limited both by the pattern of ownership and by the nature of the publicly owned shoreline. Attempts in recent years to establish Village of Larchmont facilities for small boats, windsurfers, etc. , in Little Harbor Sound at the foot of Flint Park, or at the dead ends of Beach and Magnolia Avenues, were abandoned as impractical. Discussion was renewed in 1984 between the Village, the Manor Park Society, and nearby residents about the future use of the Beach Avenue site, thus far without result. The possible use of Larchmont's small unimproved beach lot at the east end of Premium Point, just beyond the Larchmont Village line, has been discussed at times, but there too are adverse factors including an out-of-the-way location hard to supervise and police, difficulty of physical access, limited parking possibilities, and opposition from nearby residents. In sum, the potential of existing public properties for creating new recreational facilities is very limited. If either municipality should in the future acquire, or obtain the use of, property on or near the shore other than what they now own, the adaptation of such property for public recreational use would be desirable but would require careful weighing of relevant factors such as public demand, costs, environmental impact, and effect on the residential neighborhood. • 37 Facilities for so-called passive recreation are more plentiful: birding and nature walks in the Town conservation areas and the Manor Park. Optimum use of the Premium Conservation area for these pur- poses, however, will require more maintenance and community support. A potential also exists for creating additional small areas for passive recreation at the south end of Flint Park and along the open section of East Creek, as noted above in discussion of that area. The importance of these public and private recreational resources, both in maintaining the quality of life in our community and in sustaining its economy, cannot be overstated. Whatever impairs or degrades or needlessly restricts recreational opportunities -- such as a ban on swimming at times of severe water pollution, or silting up of navigational channels, or unnecessarily limited public access, or littering and vandalism in parks and conservation areas -- tends to lower the quality of life, makes the area a less desirable place to live, and thus affects real estate values and the tax base. A major aim of this Program must be to prevent such conditions from arising and to correct them where they exist. 14. Historic and Scenic Preservation As was noted in part 3 above, our community's resources include a considerable number of sites of historic and/or scenic value. Many such sites in the area deserve official protection, the absence of which may increase the likelihood of future actions needlessly damag- ing to historical and scenic values in this area. 38 "- :, •••••.:' 1) /- i ,,,., \ V •''i ., . .7•.. ,". ., . -..,.,,. 1...'":. •/ 1,i' . ) ,._ ,, / I: ..'f \ „.4.7\ „0_.., ,, N. ' t. - • , _ - ) •`f•' . _, - ) III 1 ..,„..... fi , , .,,--.. ri , ...„..... .„ Ists,( . - - ..i f 4, .- \ ., • ... ,:. ,,,,,"? '7 1 7 : ' •• j / ••• eb __ , / ] %.,..0e°''‘V .0.•- .. r ' \ - - j ;• .• 41 • .74'°' .' . p'.." ..t i c oho* •0 .f: t\I - Y-7) ? % s• / .. ''..'71- 1 • 1. • -. ". -• 54itcy, ' •,..1 - ,_I ' *.n•- ••• !..1 Ce,',4°120; '. •, ''' rt--- -14 :;,( \77. 7 Oda a •A -; • ; . . •• > . °I I r 7 ",.. .,.,•• l• ' .....- . .; ••': 'A ,- k . , ,.„ . • .. : , , ,,, -;,,:::,:,,: •. ..:: , ..,-,7-- -- „ .,„,/ LOCATION OF SELECTED SITES REFERENCED IN TEE INVENTORY -...*. - -ii. ,•_.. •.•-•„, ....• • ;••,,- .0. ---;•,., C7 16 AND ANAIYSIS , • ..-' !. ,,. l'i if ..-,,.;• •--t, r. „ \ • '..'.4;?. 1 „‘ ) 1 . Manor. Park _.10..,_ c- ' `• •-.5. g••• ,Iti _ ...,• ,s...))1, 1 '• ,..i!..-1- ' V.'Y' f .. , ••<•# 2. Flint Park • A'. .0 •° ' 3. Pine Brook Park / \ -. .._,--:-.---]• l 1,!.i.4..* \ 4. Lorenzen Park ,,,,,,- -;,;,:f.,/,•_;•:" ,!....- '... .t:% .„, m rOwN OF •• --- b , ,•.- ,v, .9,--"Ai, 5. Woodbine Park 6. Sheldrake-leatherstocking :,-,.,-, :!;2 1, ,,:' L.- I-. !k '• it1/4 ...or° -4 M A fi 0 N t. '7*, ' ,',. -,•.;:;•:=.!.:, ,,,f, -0-,-,, .c....e.,‘ ::' •tii N, -,- C lc ,,,,' , 4 Conservation Area ' •••,-- .Av . ' Ilit \ -**.1 .‘,!\ , .'54) r, 15 7. Station Park c'-',..:.9•-•` -- •-, .'.i. .;,: ',,,, •-',. -- .: 8. Premium Marsh - -'°.** • - •1••••, .."---.••• • ' fic '-----------. 0 ,. -.4, „.. •-,_, % ,_-_, • ....0, --- ,,,\••- <-• ).:- , ,./ '-°11, .'7,,:.: 9. Hommocks Marsh -.; ,‘ • ., ---... -,, . „,._2..:1 • ,/., . __,,,,_ .. 1, oc . •• ,4 ‘ ; : o- le.z?, ,... ... : ;‘'''Ve...7,.: -_., :7-------7 , or . ...- ., : to 10. Larchmont Reservoir 4 .. ,.., -_ ,-; 1-• •E• .4: '',, _,I,;;: ,-,.', ,,,,‘.,\L . . :-17 ..0`.° s,... 11 . Larchmont Yacht Club i °-•••-•':` ,--- - _,.. , AN. -_, ' . . 12. Iarchmont Shore Club •g , ,., „.•,..._-- ,,,4. - '- •• -. •'s • r• --• •-•-:-•-:!)- ../- . - ' ' l :- ' '- :‘ 13. 40. %. ..,.. , • ..„---..., - 2., ,••... ., .-.•••N ,:,.„ .,, :-.. •,-.• I) P ro, • i• •t Fountain Square ....,,, • •;. . 1 , - .1- -/ -..-.. - - - -- * ; .9. • i (7--- ., ' -';:".::," f/ •• ?j .0,‘ . •.- .-.' . , i .‘...,,,, .0 •-„, • )/ .... 14. Premium Mill Pond --! ' af.... , • „ei ••:-.,k• - ,... a a,a. : . 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'!..t.''' o'\ a; i •,.^. �� �� ®� ;AMA Village or Town Park A' ..�• ;. •,t^..w. ,,� :• , � ,'� ,,., II II �� or Open Space �o� ,. �.�, -�tta ,: i\ \ ��. `.' Public School \:\. '' ON "� •y, ' r' • '+:r��,_ ,,;t�� , 1 ii.. ,, . r04 ��. 1„ Private Park ' '.,,N . t .,(-1.;‘: �1 , (, 1.49)::::::1../:,1 � 'i �•o4 P:'••'\ +'' County Park • Private Golf Course Jiz'', / lj, �i , •, �, N.• ,.//., Private Club \ �'cf) / °, �- Conservation Areas r, y "":......,2 7 � n / l't , ..;: f. 6*-,-...,' � '4' )/ A- 7 2, ISLAND 14 ,„c_,.,, ,,,: ..1 6 ^ ;/ ` v'1 � 1... Q N 1II=1600) Y c 1 e•f r, n a, •O'h, Local Waterfront Revitalization Program N1aE\ Ni). EXISTING Village of Larchmont - Town of Mamaroneck OPEN SPACE 4 tih)1`<<r f\�su. iate Planning Consultants ‘ „.4 ,1 el thl / ,'.4;.:" ,� o tQIF,,,/ ' / ani Mi.. . r 1/ 0 ,,ntok ,:fare ` *40,;''',--.';\‘`.4-''.1-1/.% >t/:ryo Cr. o aa ' ' • ' • • ' --/ e,i''''' .--Air. r .‘ ' . i u,,? \9-i'''''''C X ' _' '''' 1� '' f LEGEND ':' �� 1 ;�". �l rti e ti„ 4'9 . r IL 7s I 'I,i'. • pV if ii, Sway !. ___ i I i Ie1 jj " ' Rt /'.,. �es '' 0. �.f'1 / t; , WATER FEATURES ®�l r I\ d Streams Lakes ° I t 1 1 � �� �i M 1, .. y 6 , .y El A fig:. i- y'•a11 \-Z G 1 r /� • 1,�, �1 - �'..��,.,�., DRAINAGE DIVIDES r VD,.;,. - i , 0 ,/ \ m / I / q Major divides separate ,,‘...I) i ;PENN '4: f CsoltSnial ':cre� N, '.t j ...� II' I9 groups of basins • k` o; 1 ----- `� ,/ ' • �' it f ), 1 'I 1 t Sta ----- / n 4k 1 i. , ' ,� , Minor divides separate f�u kk e1r`,4 )'' u,kK Y\_:// V O •\�i ;:,u 5,. ff� \y21r " individual basins �� • • 1 -3•it,- •• • /,/ - w J(f t it� lua .rliAKe O ,i Ali•- ✓ h s f (, I , \ o,J�' C ' �' ) � CLASSIFICATION OF WATERS v3s'\ ) F-. � uaket oge II] t ( o luq. O \ I \ �i I 1 n 1 Fresh Water Saline Water ,.. ,. 9 '. I,' J /. / • \ R o BEST USAGE Ml A I B I C I o 11 T) SA�SB�SCISDl I e/ n i3 "'6 !x'f'j� J,/ f t ( 1107 / J J \ �'I, Human Consumption �.� �! I i i 1; �� (� Food ProcessmQ rPRo • , 14(i rdoGkl'iN As �///^��� ;. Primary Contact Recreation i ro - d '' #\• 1 )3- `(;Pc�rtZ AC Sec�ndaryContactRecreation —" '1111,h 1ok 0C.`,,'f ``� t '1I i •l i ,0 cn ''k++ PrupagattonolAquatic Life —� r r r / !., er" t Growth of Aquatic Lite • --� / . . 1 %.',-;/I •�•. T. i�: "':'. -e, Survival of Aquatic Life `� /' • aPropagation of Fish Life t a, y . ,�r l i , ` `,1,"..r.''',',.,-,.., ' j k' 5'., ',‘ Survival of Fish Life ' '�' '� CT' // 0,-'_ Trout Propagation&Survival -� 1 9z1 I, ,is „iged Fo.t 1.,,. `t !l E rr•� t=Co1l Cl �� p •• „ Shellfishmg for Market Purposes i o.,.' � Si• r .y ;,-•1., I 'I i See DEC____(Sec 701 6 702 NYCRR for Definition and standards i �� ,,If / < mmi i� 1 io ..,:;,;,..,..:;,,,.,77, ; '�� �� ,II e • i IV • u- 'ool ,r OP I r 'rime,.'Warn 5 r 1 ) /•‘:.:•:;i 'C i • Q' -,'^‘,/(1,. vot. �, !!, C �,i'/1} i(• 1( fit.- , i/ rr TIDAL WETLANDS • 1 i - Jup , ;. c 'z.,' / , Formerly Connected FC n I)pp i (` rag 6 iill,j ilii ' ��0, �)j o rayotk. rl ����y A r ,r/1�_,. - ��1� - r> �. s. „ Coastal Fresh Marsh FM [Z J'4014,'t Pts• •••i• , -,,-i.-. ).;-.),;.. ),)`� . f. , C, k-. , }'�'. ,_ ',., _• • %`.1 Y t.i'; (, High Marsh or Salt Meadow HM 4 j ` A .,, ` /1( ' tI ` r%r/, tt' rr Intertidal Marsh IM a VI!"�� Coastal Shoal, Bar,Mudflats SM • I1 ;-f ieb •[:,,,.'. ---- ,....., �� r ; //-, -, ,' �li►� „go, ...f; Littoral Zone LZ ">' ( D L • J� vi 4I .II ,II i' ' I, 1 / 79��� ..r, 41.116 �� / \ 11 �/ / "1. •/ //. L m, b ll fr Y •• I,l .:r7,..„ ,. ,,, ',,r 440. tj ii,N.�, ti`? '\� wl !1 r ' // �j'%e•+' FLOOD HAZARD AREAS i ,I •av . ,1 � ,V � .1 \ ?- � N F � . / /\ ( HUD Phase II 100 l..' j y > . ( (, year HUD Phase I or other $� ?' I 073 i` h• i � � ', ; /, \t j , frequency flood elev preliminary study ' i 9) O �`, ,.A`: i .,-4c,----, �y ;. ( ",' ation established ( r. e \'�'` iii ,:y;�� r (, 'Y F�, /�kl i I, oso' 1_ r Sen t 1`}}. ' i Floodway - _,- ---. +�i rc. ' 1`��s'%�'� r< '�,„illYj IIA ��"��i ii ��• Highs Limit of \1 • ".r ,i i • -i ", Soh • �� L r'i1 It.1 * -v i Rol<. f�! T detailed study • ft � 4,7k� •3 uJ `t - \. :4e/! / u t;(' ` .;ji NOTE: See Map 5A for more detailed delinea- <. „• `o r, tion of Coastal high Hazard Areas and '' & ;.\ ` 11 ,,A / r �P,/fr 1' i c�� -W\ \ /Y : / ..J,, 1t7 ) ' o - c Tidal Wetlands. g��:: fid\\ ,44 r • ,�4�((K£�,,. 1i }" ,�'�g� 'I'it.: �� i •!11-1-r \ r.` r it 1♦ /1 N _ 1 * /4..07 / -----7-' ,,\,,,; -7-',,,,' i ,� •ii,1 -11 c ' c i=1'ir&;%"164' .\ aCO 'AI., s ' ,rye�a,a�� 'Ha Source: Westchester Planning Department -I ) (� • � .j�l >% %' % /y$�' ea' IT 4,00$1.*''s��u ''Environmental Atlas'' . «. '' s. ', i // 7/ L 'IT low', (/��1 p a olden 4 „tip. :-sS ' �' I D 1:6(!r t 1, r �IS T1 1 \y 9 123 �1�. , �'. /, 1M �f1 �i lom 11)i , .i r SQ, ;<• � pf�t i.)/It . ,L /• 0,14 `.� '' era! ,/�c is„Re' / „� • ,i ) 'f' / I• k /' A �.. f �\\ Ie land .r i 7 . \\ �/ I�d.y - <.( *- -r ,r .• / r . % ` r , 4,a.{1j ;iO• }.::� , gJE'' ,(:,,' , 4 f / .._., ,• ,..) 4'-—`, t/ /. M///fF7-. : s /� i A z `1/._`^'_ M l i`- r!' • ��i(a I” o ff: t OVIRa I 1rr�N Lt, =41 ,. tw„,_.,7ir,,..? '.• t:A - /lye?,\/ -44Irci, '---rf, .-.•\ - ' .1% P,; t v j _ . ��,d .r" f' ?� Delancey VNIIII :. i /74* "t, • //.\i ='ti.4..` 1aM reacen , is ii'�` * Point ' � ��S / r r ho o Point **#* -� r, t : /� ' ., ��4 9 IIM a Iz IM J �'••• M - IC.4: I i t (or iy: j/,� ���i`�C L=i � :; /h�"y'I ) i to'''' I; 7'�'�c,), +',� edar Pf //p sa42,\--,,,,-;2..,,,e,/' Q tV / '1,.• \, I 1 ) w 4 \ • W.,Akol r9 -II h � IMS s ..•;.� '11.t., :-. � i(r a-,il,•' ` '.�// ''� .`t ,-,7,-1.;#44i M•� ', �'ter' / % t .14 S -.te a 0. �' �_ i ,.\ '``'/. "a. ' , i , La.rc h'm o n t� ; ^ 11 1*,, 't.:: ) 1j,1'1 ', V.4'�4• • H :,F ,� \A-'21‘' � \�-, �' Ha. bar I11 rirr 95,n77 � v1 • :11'1'1)4' � i� ,`�: . f �S ,, , �.��►'- ' e �dgewateY ,,;/14/..-,,i,'.„ ( 04.1/II t ! f Y , .. I r \\ k.. Point ice - �� c' l C 'i. / i% ofliv4/t y��, �f. . le 1.'' `!T3'- �!y.� f if,'Umbrella ././ . S.,!:11,11414% e( j\ `m "•�, ,i . �� ,c p,-,r..� .i3�:�• .)' r ¢ %\t \ 4.. POlnt SA t R st. \P�v 1i 4,/,‘,4e117-..;,:•5'//1.," Q m t S tl `•C. $es •`P r ` \\,Y✓® _1 SM ! Pre IM 1 a ��1'Myer I arbor `,..})\'''� F'a uih\p .* Or �`' , Mi .r nil / o .!, SM j C c 0 ti SB 12 'lj �`-• ,r" ► ' Beaufort° T I, iii IM SB A ,,j� '. ,` �t,otjr, I S L A N Dlir!lir I ;:di4 Stix ietk,..� • ..c ,.,'i .muck Gut •t 4. fiti4 `o ` fir" ' *Echo Bey eI ,' V "r; \ Via¢- IM SA Local Waterfront Revitalization Program Map No. Village of Larchmont - Town of Mamaroneck HYDROLOGIC FEATURES 5 Shuster Associates Planning Consultants IC O� v 'co Aa �P .:1111ZiliP a0 'f.1% Y ) 4 J C b�)� �J Zsd a W t, RC)-------- a� 0 ;/ I 0 s4 r So I ',i ril . ? nkR'77 C ; + QyI 0 { +a � � ,fo;. ij; ° d a G0i. eiltio Q k„.7., Q ' 0 y jr', r?' `ply , 1 ' . / S 0 ..r,,(4, G . t,/7O +bo o• S 1"� �;. 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ISLAND 4 1 "=1 600' -gP.•' v 4.7, .• •4:08q,..1 •..w .1 ..„4 'Coo Cs, „, Map No. Local Waterfront Revitalization Program Village of Larchmont - Town of Mamaroneck POLICY ISSUES 6 Shuster Associates Planning Consultants \MMINE1111111•11MMIIMIL MI/ i s '' S • �. ± h, �4af 3 4r '�T r' 1 f i ,, ) "� ! r � k1 air. r. +5' -..•- ,v.. :► *d1'lfrfyi j,f. .= r •,..,,'.0. + _ azl yyam... f"` lk t . , .� ''',,,'1,,.'P.1-,, is);‘,,r.,7,;;••,•„,:,/,Y1 -' - U a �� ';':,(i" VILLAGE TOWN OF OF LARCHMONT MAMARONECK The preparation of this report was financially aided through a federal grant from the Office of Ocean and Coastal Resource Management, '' National Oceanic and Atmospheric Admin- � " = istration under the Coastal Zone Management 4' ��`�� Act of 1972, as amended. This report was '�` '. prepared for the New York Department of - µ , State. ,, 4 �, Vis« Yi ;� 4. �'-a+ 4'.-:.;:v4';'-'-'.;3C C 4,742# t ,t..4,4*V124T411','-, „i.40, ..'',-4"'.,-- '', 7,-- 4Lii.- :,..7iiri,i T.:1,7&.41X-4. t K f '`-x °` SECTION III LOCAL POLICIES � � , _4111 AND APPLICABLE ‘2. �� STATE POLICIES SECTION III: LOCAL POLICIES AND APPLICABLE STATE POLICIES DEVELOPMENT POLICIES POLICY 1 RESTORE, REVITALIZE, AND REDEVELOP DETERIORATED AND Not Applicable UNDERUTILIZED WATERFRONT AREAS FOR COMMERCIAL AND INDUSTRIAL, CULTURAL, RECREATIONAL AND OTHER COMPATIBLE USES. Not Applicable. The coastal area is almost totally developed with high quality residential and recreational uses. There is no deterioration of waterfront sites or of the economic base in this area. POLICY 2 FACILITATE THE SITING OF WATER DEPENDENT USES AND FACILITIES ON OR ADJACENT TO COASTAL WATERS. Explanation of Policy: This policy applies to both water- dependent and water-enhanced uses, defined as follows: A water-dependent use is one that must be located on or adja- cent to coastal waters in order to function. Among such uses appropriate in this area are: 1. Recreational activities which depend on access to coastal waters (for example: swimming, fishing, boat- ing, wildlife viewing, scenic and nature walks) ; 2. Aids to navigation; 3. Flood and erosion protection structures (for example: breakwaters, bulkheads) ; 4. Non-commercial facilities needed to store and service boats; 5. Scientific/educational activities which require- access to coastal waters (for example: certain meteorological, ecological and oceanographic activities) ; and 6. Support facilities which are necessary for the success- ful functioning of permitted water-dependent uses. A water-enhanced use is one that has no critical dependence on a waterfront location, but whose profitability or enjoyment is increased significantly by its proximity to, or visual access to, the waterfront (for example, a scenic waterfront park) . Residential development, with associated recreational facil- ities, along the local waterfront is cohesive and of high quality. Undeveloped land adjoining coastal waters is scarce and environmentally sensitive. Thus, few opportunities for new water-dependent or water-enhanced uses are likely to arise. 39 Therefore, emphasis under this policy will be placed on pre- serving appropriate existing uses that are water-related. Only such new water-dependent or water-enhanced uses or facilities will be permitted as are compatible with appropriate existing uses and with other coastal policies herein, including those that relate to protection of wildlife habitats and wetlands, preservation of historical, scenic and recreational resources, and control of flooding, siltation and pollution. Priority in the use of any property adjacent to coastal waters that may become available for development will be given to a water-dependent use over an otherwise equally qualified water- enhanced use, and to either of these in preference to a use that is in no way water-related. POLICY 3 ENCOURAGE THE DEVELOPMENT OF THE STATE'S EXISTING MAJOR PORTS Not Applicable OF ALBANY, BUFFALO, NEW YORK, OGDENSBURG, AND OSWEGO AND CENTERS OF COMMERCE AND INDUSTRY, AND ENCOURAGE THE SITING, IN THESE PORT AREAS, INCLUDING THOSE UNDER THE JURISDICTION OF STATE PUBLIC AUTHORITIES OF LAND USE AND DEVELOPMENT WHICH IS ESSENTIAL TO OR IN SUPPORT OF WATERBORNE TRANSPORTATION OF CARGO AND PEOPLE. Not applicable. The Larchmont/Mamaroneck coastal area is not situated within any of the State's major port areas. POLICY 4 STRENGTHEN THE ECONOMIC BASE OF SMALLER HARBOR AREAS BY Not Applicable ENCOURAGING THE DEVELOPMENT AND ENHANCEMENT OF THOSE TRADITION- AL USES AND ACTIVITIES WHICH HAVE PROVIDED SUCH AREAS WITH THEIR UNIQUE MARITIME IDENTITY. Not applicable. The Larchmont harbor area is fully developed with residences and recreational facilities serving them, and does not lend itself to tourism or to waterfront commercial activity. POLICY 5 ENCOURAGE THE LOCATION OF DEVELOPMENT IN AREAS WHERE PUBLIC SERVICES AND FACILITIES ESSENTIAL TO SUCH DEVELOPMENT ARE ADEQUATE, EXCEPT WHEN SUCH DEVELOPMENT HAS SPECIAL FUNCTIONAL REQUIREMENTS OR OTHER CHARACTERISTICS WHICH NECESSITATE ITS LOCATION IN OTHER COASTAL AREAS. Explanation of Policy: This policy is designed to assure that development in the coastal area is "encouraged to locate within, contiguous to, or in close proximity to, existing areas of concentrated development where infrastructure and public services are adequate, [and] where topography, geology, and other environmental conditions are suitable for and able to accommodate development." Since this coastal area is almost fully developed, many of the above conditions are present and some undesirable types of action such as urban sprawl or "leapfrog" development are not concerns here. However, the 40 topography and geology of the drainage basins traversing the Town and Village set inherent limits on the intensity of development that is possible without overtaxing storm drainage facilities. As noted in Section II, these limits have already been exceeded, producing flooding, erosion, siltation, and other adverse impacts. Any future development in the area's remaining open space must be designed and regulated to minimize these impacts and assure adequate storm drainage both for the properties in question and for those downstream. Cooperation of upstream municipalities in controlling development in their part of these watersheds must also be sought. Such steps, set forth under Policy 14 and in Section IV-A-1, will give effect to this policy. POLICY 6 EXPEDITE PERMIT PROCEDURES IN ORDER TO FACILITATE THE SITING OF DEVELOPMENT ACTIVITIES AT SUITABLE LOCATIONS. Explanation of Policy: When administering existing regulations and prior to proposing new regulations, every effort should be made to determine the feasibility of coordinating administra- tive procedures and incorporating new regulations in existing legislation, if this can reduce the burden on a particular type of development without jeopardizing the integrity of the regulation's objectives. FISH AND WILDLIFE POLICIES POLICY 7 SIGNIFICANT COASTAL FISH AND WILDLIFE HABITATS, AS IDENTIFIED ON THE COASTAL AREA MAP, SHALL BE PROTECTED, PRESERVED, AND, WHERE PRACTICAL, RESTORED SO AS TO MAINTAIN THEIR VIABILITY AS HABITATS. Explanation of Policy: This policy is not applicable at this time because the habitats proposed for designation in this area have not yet been identified on the Coastal Area map. Brief description of habitats proposed for designation: Three habitat complexes are proposed for designation, as follows: -- The Premium Salt Marsh Complex (total 56 acres) centering on the Premium River and including the Premium Marsh and two smaller tidal wetlands nearby; -- The Hommocks Salt Marsh Complex (total 15 acres) at the head of Little Harbor Sound next to the outfalls from East and Gut Creeks, comprising the Hommocks Conserva- tion area and some small adjacent habitat areas; and -- The Larchmont Reservoir-Sheldrake-Leatherstocking Freshwater Wetland Complex (total 86 acres) which includes the Larchmont Reservoir-James G. Johnson 41 Conservancy, the Sheldrake-Leatherstocking Conservation area, and connecting habitat corridors. All three of these areas are nesting and feeding grounds for many bird species as well as fish, shellfish, crustaceans, reptiles and mammals. For details, see the wildlife habitat narrative in Section II-4 and the inventory of species in Appendix A. Impact Assessment The fact that nearly all of the land and water in these three complexes is public property, most of it in Town Conservation areas, does not suffice to shield them from adverse impact. As is noted repeatedly in the Inventory and analysis, the impact comes from outside the three areas themselves, mainly from upstream. Oil spills; illegal waste disposal; pesticide and fertilizer residues from homes, parks, golf courses, and commercial nurseries; silt from soil erosion, construction sites, and dredging operations -- all these have already inflicted their share of damage, impairing the quality of all three areas as feeding and breeding grounds for fish and wildlife. The effects have been seen, for example, in fish kills in the Larchmont Harbor area; in the near disappearance of blue crabs from the Premium area; and in the ban on consumption of shellfish taken from the waters of the Westchester Sound shore and its estuaries. A number of steps are planned, either for execution or for study, in Section IV of this program, designed in part to repair past damage to these three areas and to enhance their viability and survivability as wildlife habitats. Also, new legislation is called for in Section V-A-2 designating these areas as Critical Environmental Areas under the SEQR law. Some of these steps are restorative or enhancing to be taken within the areas themselves; others are protective, involving both physical projects and land use regulations upstream from these ares, and are intended to reduce future adverse impact from the outside. Any action that would cause or aggravate such impact, or adversely affect the preservation or restoration of the habitats covered by this policy, would be inconsistent with this policy. The purpose of officially declaring these three wildlife habitat complexes to be "significant" (or, at the least, "locally important") is to strengthen the hands of the munici- pal governments in pursuing these restorative, enhancing and protective actions -- and in obtaining the cooperation of all, both within and beyond our municipal borders, whose land use and other actions may determine the fate of these habitat areas for better or worse. Failure to take such steps would result in irretrievable loss. 42 Note: Since all three of these habitats center on tidal or freshwater wetlands, which are dealt with under Pol- icies 44 and 44A, the three policies will be considered together for purposes of implementation. POLICY 7A THE FOLLOWING LOCALLY IMPORTANT HABITATS: (1) THE PREMIUM SALT MARSH COMPLEX: (2) THE HOMMOCKS SALT MARSH COMPLEX; AND (3) THE LARCHMONT RESERVOIR-SHELDRAKE-LEATHERSTOCKING FRESHWATER WETLAND COMPLEX SHALL BE PROTECTED, PRESERVED, AND, WHERE PRACTICABLE, RE- STORED, SO AS TO MAINTAIN THEIR VIABILITY AS HABITATS. Explanation of Policy: See brief description and Impact Assessment guidelines in Policy 7 Explanation of Policy. Note: As noted in Section II-4, the intertidal and littoral zone extending from Larchmont Harbor westward to and around Premium Point has characteristics which qualify it as an important habitat. It is not so listed here since it is adequately protected by the Tidal Wetlands Law. POLICY 8 PROTECT FISH AND WILDLIFE RESOURCES IN THE COASTAL AREA FROM THE INTRODUCTION OF HAZARDOUS WASTES AND OTHER POLLUTANTS WHICH BIOACCUMULATE IN THE FOOD CHAIN OR WHICH CAUSE SIGNIFICANT SUBLETHAL OR LETHAL EFFECT ON THOSE RESOURCES. Explanation of Policy: The regulation of hazardous wastes is assumed by state and federal agencies. Other pollutants from point or non-point sources also cause substantial damage to fish and wildlife resources and are controlled by both state and local laws, the most important local laws in this con- nection being the SEQR and Freshwater Wetlands laws of both the Town and the Village. County and local government must be more effective in monitoring pollution as well as enforcing local regulations and reporting violations of state or federal law, which are a serious problem especially in the Premium area, the East Creek-Hommocks area, and nearby waters of Long Island Sound. Pursuant to this policy, a regular program of monitoring and reporting of pollutants likely to damage fish and wildlife in the area will be conducted in cooperation with appropriate State and County agencies, and neighboring municipal agencies; and local regulations against such pollutants will be reviewed for adequacy and strictly enforced. POLICY 9 EXPAND RECREATIONAL USE OF FISH AND WILDLIFE RESOURCES IN COASTAL AREAS BY INCREASING ACCESS TO EXISTING RESOURCES, SUPPLEMENTING EXISTING STOCKS AND DEVELOPING NEW RESOURCES. SUCH EFFORTS SHALL BE MADE IN A MANNER WHICH ENSURES THE PROTECTION OF RENEWABLE FISH AND WILDLIFE RESOURCES AND CONSID- ERS OTHER ACTIVITIES DEPENDENT ON THEM. 43 Explanation of Policy: The limited fish and wildlife resources of the area, the fragility of their habitats, and dense sur- rounding settlement combine to preclude hunting or extensive shore-based fishing. These activities are not now permitted on public property in the area. However, recreational uses of coastal fish and wildlife resources also include non- consumptive uses such as wildlife photography, bird-watching and nature study. In general, the latter category shall be given preference over the former in view of the limited size of the resources and their location in urbanized areas. Comment in DEC memo of 6/28/85 on this passage has been noted and will be dealt with in final review together with related passages in Sections II (page 9) and V-B-8. The following additional guidelines should be considered by local, State, and Federal agencies as they determine the consistency of their proposed actions with the above policy. 1. Actions should not impede existing or future uti- lization of the State's recreational fish and wildlife resources. 2. Efforts to increase access to a recreational fish and wildlife resource should not lead to over-utilization of that resource or cause impairment of the habitat. Sometimes such impairment can be more subtle than actual physical damage to the habitat. For example, increased human presence can deter animals from using the habitat area. 3. The impacts of increasing access to recreational fish and wildlife resources should be determined on a case-by-case basis, consulting the significant habitat narrative (see Inventory, Section II, part 4, and Policy 7/7A) and/or conferring with a trained fish and wildlife biologist. POLICY 10 FURTHER DEVELOP COMMERCIAL FINFISH, SHELLFISH AND CRUSTACEAN Not Applicable RESOURCES IN THE COASTAL AREA BY: (1) ENCOURAGING THE CONSTRUCTION OF NEW, OR IMPROVEMENT OF EXISTING ON-SHORE COMMERCIAL FISHING FACILITIES; (2) INCREASING MARKETING OF THE STATE'S SEAFOOD PRODUCTS; AND (3) MAINTAINING ADEQUATE STOCKS AND EXPANDING AQUACULTURE FACILITIES. SUCH EFFORTS SHALL BE IN A MANNER WHICH ENSURES THE PROTECTION OF SUCH RENEWABLE FISH RESOURCES AND CONSIDERS OTHER ACTIVITIES DEPENDENT ON THEM. Not applicable. Although there is some small scale commercial lobstering off-shore based on nearby ports, the means contained in this policy for further developing this or other commercial fishing in the area do not exist in this community, nor is there any suitable location for providing them here. 44 POLICY 10A IMPROVE WATER QUALITY IN LONG ISLAND SOUND WATERS TO PERMIT THE TAKING OF SHELLFISH FOR HUMAN CONSUMPTION. Explanation of Policy: The Westchester Sound shore, whose waters are accessible by boat to both comercial and recreational shellfishing, was once a major shellfish producing area. For many years, however (as was noted in Section II, part 3-h, and on Map 5) most of its inshore waters, including those off the Larchmont-Mamaroneck coastline, have been in New York State classification SB, which forbids shellfishing for human consumption. Biological pollution, mainly from sewage, is the main cause. The municipal governments, in cooperation with other Sound shore communities and with concerned County and State agencies, will endeavor to raise the water classification from SB to SA with the goal of reopening Western Long Island Sound for the taking of shellfish. More effective control of sewage pollution (see Policies 30 through 34) and organic nutrient runoff (Policy 37) , as well as monitoring and regulation of heavy metals and other bioaccumulative substances entering coastal waters (Policy 8) will serve to promote this objective. FLOODING AND EROSION POLICIES POLICY 11 BUILDINGS AND OTHER STRUCTURES WILL BE SITED IN THE COASTAL AREA SO AS TO MINIMIZE DAMAGE TO PROPERTY AND THE ENDANGERING OF HUMAN LIVES CAUSED BY FLOODING AND EROSION. Explanation of Policy: The design and location of existing or proposed buildings in designated flood hazard areas are reg- ulated by flood damage prevention laws adopted by both munic- ipalities under the Federal Flood Insurance Program (see Map 6) . These laws will assure compliance with this policy in such areas. This policy also requires that in coastal erosion hazard areas, so designated under the New York State Coastal Erosion Hazard Areas Act, buildings and similar structures shall, among other things, be set back from the shoreline far enough to minimize erosion. No coastal erosion hazard areas have been designated in this coastal area; however, under this policy, the standards applying to such areas will be applied wherever appropriate to Premium Point Beach, the Larchmont Manor Beach, and the tidal wetlands in the Premium and Hommocks estuaries, all of which are subject to storm and/or tidal erosion. This policy further requires that in areas designated under the Federal Flood Insurance Program as coastal high hazard areas ("V zones") , walled and roofed buildings and fuel storage tanks shall be sited landward of mean high tide; and no mobile homes may be sited in such areas or in designated floodways. Areas within our coastal zone which have been designated in these two categories are shown on Map 5A. 45 POLICY 12 ACTIVITIES OR DEVELOPMENT IN THE COASTAL AREA WILL BE UNDERTAK- EN SO AS TO MINIMIZE DAMAGE TO NATURAL RESOURCES AND PROPERTY FROM FLOODING AND EROSION BY PROTECTING NATURAL PROTECTIVE FEATURES INCLUDING BEACHES, DUNES, BARRIER ISLANDS AND BLUFFS. PRIMARY DUNES WILL BE PROTECTED FROM ALL ENCROACHMENTS THAT COULD IMPAIR THEIR NATURAL PROTECTIVE CAPACITY. Explanation of Policy: Only one natural protective feature of the types listed, i.e. , Premium Point Beach, is present in the Larchmont/Mamaroneck coastal area. It will be monitored and maintained to preserve its protective function. However, major protection against upstream flooding and erosion is provided by a combination of other natural protective features, despite some impairment resulting from past development, namely: the flood plains in the Sheldrake and Pine Brook drainage basins; the flood protection function of the Larchmont Reservoir; and the tidal wetlands at the outflow of the Pine Brook-Premium and East Creek-Gut Creek-Hommocks drainage systems. The flood protection value of these features will be protected against adverse impact from development or other activities, and further increased by physical improvements and by improved drainage basin management. To these ends, further development or other activities which could cause damage to the wetlands or other natural resources, or to buildings and other property will be carefully monitored and regulated (see Policy 14) . POLICY 13 THE CONSTRUCTION OR RECONSTRUCTION OF EROSION PROTECTION STRUCTURES SHALL BE UNDERTAKEN ONLY IF THEY HAVE A REASONABLE PROBABILITY OF CONTROLLING EROSION FOR AT LEAST 30 YEARS AS DEMONSTRATED IN DESIGN AND CONSTRUCTION STANDARDS AND/OR ASSURED MAINTENANCE OR REPLACEMENT PROGRAMS. Explanation of Policy: Most of the Long Island Sound coastline is protected from erosion by permanent structures which, with periodic maintenance, provide long-term protection. The various rivers and streams flowing through the coastal area, however, are often subject to increasing erosion due to chang- ing upstream flow characteristics. Erosion protection struc- tures in these areas will be designed to give the long-term protection required by this policy while, at the same time, respecting considerations of the natural and aesthetic environ- ment (see Policy 25) . For example, use of natural materials such as rock or wood is preferable to concrete or steel. POLICY 14 ACTIVITIES AND DEVELOPMENT, INCLUDING THE CONSTRUCTION OR RECONSTRUCTION OF EROSION PROTECTION STRUCTURES, SHALL BE • UNDERTAKEN SO THAT THERE WILL BE NO MEASURABLE INCREASE IN EROSION OR FLOODING AT THE SITE OF SUCH ACTIVITIES OR DEVELOP- MENT, OR AT OTHER LOCATIONS. Explanation of Policy: Application of this policy to local conditions will require the development of an integrated flood 46 and erosion control strategy for improved control of flooding, erosion, siltation, and associated problems in the three watersheds of this coastal area. The relevant facts and considerations are as follows: Erosion and flooding are processes that occur naturally. However, unwise actions can increase their severity, causing avoidable damage to or loss of property and danger to human lives. Such actions commonly include failure to follow proper drainage or land restoration practices, thereby causing runoff which erodes and weakens stream banks or shorelands and causes siltation of stream beds, wetlands and navigational channels; placing of structures in identified floodways so that the base flood level is increased, exposing otherwise hazard-free areas to flood damage; and filling of wetlands and marsh areas with or without related measures to prevent erosion. As was pointed out in the Inventory, actions of these and other kinds over many years in our three watersheds, both within and upstream from the Larchmont-Town of Mamaroneck coastal area, have resulted in serious aggravation of flooding, erosion, and siltation. As a result, substantial damage has been inflicted on residential areas well upstream from those covered by the Federal Flood Insurance Program, as well as on recreational and ecological resources in the coastal zone; and further serious damage can be expected unless corrective actions are taken. In the Sheldrake watershed these effects are felt not only within the Larchmont-Town of Mamaroneck coastal area but also in densely developed sections of the Village of Mamaroneck downstream near where the Sheldrake joins the Mamaroneck River. Important, but insufficient, protection against these problems is found in existing legislative and physical steps taken by the two municipalities. Existing local laws and regulations, listed in Section V-A and important in this context, include Flood Damage Prevention regulations; Freshwater Wetlands laws; certain provisions of the zoning laws; SEQR laws; site plan review laws; subdivision regu- lations; a Town law governing conservation areas; and a Village law dedicating the Larchmont Reservoir property. Physical mitigation has been obtained from a combination of natural and built features, the most important of which are the remaining open space in the Pine Brook and Sheldrake flood plains, lying partly within the Town and partly in White Plains, Scarsdale and New Rochelle; the Larchmont Reservoir with its release valve, functioning as a retention basin; and the tidal wetlands at the foot of the Pine Brook-Premium and East Creek-Gut Creek-Fiommocks watersheds. Some role in the latter watershed is also 47 played by a portion of the Hampshire Country Club property, located partly in the Town and partly in the Village of Mamaroneck. So far as lies within the power of the two municipalities, the flood protection value of all these features will be preserved. To this end they will also seek the necessary cooperation of the upstream municipalities just mentioned. However, these existing laws and physical features, taken together, do not suffice to achieve effective flood and erosion control in this area and will not be relied upon to do so. Rather, they will be used as elements in an inte- grated flood and erosion control strategy which the munici- pal governments will develop for the three drainage basins pursuant to this policy. This strategy will include physical, legal, and administrative actions such as those described below, as well as the land use controls set forth in Section IV-A. It will be based on technical studies of the hydrology and physical characteristics of the three watersheds, and on feasibility studies, where necessary, of various physical actions under consideration to determine their combined effects in association with land use pat- terns and controls. In implementation of this policy the following considerations will be_kept in mind and actions taken: 1. Technical research: In 1982 at the request of the Friends of the Reservoir and the affected municipal- ities, a hydrological study of the West Branch of the Upper Sheldrake was initiated by the Westchester 'County Soil and Water Conservation District. This study, now completed, will provide necessary technical background for consideration of various possible new flood and erosion control measures by the four jurisdictions involved, i.e. , the Town of Mamaroneck, New Rochelle, Scarsdale and White Plains. Comparable studies of the East Branch of the Sheldrake and of the Pine Brook-Premium and East Creek-Gut Creek-Hommocks drainage basins remain to be undertaken. Such studies must be undertaken at the local, County, and/or State levels since these areas are not currently included in the flood control program of the U.S. Army Corps of Engineers. • 2. Physical actions: A number of physical actions involv- ing the Larchmont Reservoir, the upper Sheldrake, and the Pine Brook-Premium area are listed in Section IV for execution or for feasibility studies. The most important physical facility now in service for flood control in any of these areas is the Larchmont 48 Reservoir, the operation of which to mitigate flooding in the Sheldrake is described in Section II above. Timely operation of the new valve in the Reservoir's upper dam since 1981 has given important, though partial, relief to flood-prone areas downstream during a period of exceptionally heavy rains. Various engineering steps to protect and further improve the flood control value of the Reservoir have been initiated or are under consideration. In assessing such proposals, weight should be given not only to their cost-effectiveness for flood control but also to their potential impact on the Reservoir's important aesthetic and recreational value and on its value as an emergency standby source of municipal water supply. 3. Legal and administrative actions: (a) The value of the Larchmont Reservoir for flood control was a major consideration in the decision of the Village of Larchmont in October 1984 to dedicate the Reservoir property in perpetuity as open space for public use. This act assures, among other things, the permanent availability of the Reservoir as a key flood control facility in the West Branch of the Sheldrake. The policy of permanent preservation of the Reservoir for that use is hereby reaffirmed. (b) The planning, zoning, and other regulatory powers of the Village and Town will be used to prevent any increase in, and in certain critical areas to reduce, rates of storm water discharge in the three watersheds. As a minimum standard, develop- ment of any piece of land larger than 10,000 square feet shall be so regulated, designed, and constructed as not to increase the rate of storm water discharge beyond the property line above the rate prevailing before development, nor to de- crease the rate of storm water runoff into the property from upstream. This standard can be met by requiring maximum preservation of tree and ground cover, by requiring construction of water retention devices, and/or by changes in zoning categories where necessary. In addition, in the • critical areas discussed in Section IV A-1, a 10 percent reduction in storm water discharge rates, by such means as are there described, shall be required as a condition of development. In keeping with Policy 17, non-structural measures will be used wherever practicable in order to meet these standards. - 49 (c) The cooperation of upstream municipalities in the Pine Brook-Premium, East Creek-Gut Creek-Hammocks, and Sheldrake watersheds, and of appropriate Westchester County authorities, will be sought with a view to adoption of comparable rules and standards on storm water discharge rates, pro- visions for preserving wetlands and other remain- ing open space in the shared watersheds, and making of plans for permanent organizational structures by which the municipalities sharing each watershed can manage it in cooperation. 4. Reappraisal and revision. Actions or projects de- scribed or referred to in this Explanation of Policy will be reappraised from time to time in the light of new knowledge and experience, and may be revised in order to better achieve the purposes of this policy. POLICY 14A CONSTRUCTION OPERATIONS ON ANY LAND LARGER THAN 10,000 SQUARE FEET IN AREA SHALL BE CONDUCTED IN ACCORDANCE WITH THE STAN- DARDS SET FORTH IN THE WESTCHESTER COUNTY BEST MANAGEMENT PRACTICES MANUAL ENTITLED "CONSTRUCTION RELATED ACTIVITIES: STANDARDS AND SPECIFICATIONS," PUBLISHED NOVEMBER 1979. THE COOPERATION OF UPSTREAM MUNICIPALITIES AND OF COUNTY AGENCIES WILL BE SOUGHT IN APPLYING THESE STANDARDS THROUGHOUT THE WATERSHEDS ENTERING THIS COASTAL AREA. Explanation of Policy: Large construction operations, often lasting many months or even years, are a leading cause of increased water runoff and associated erosion and siltation. They also tend to disrupt community life in other ways by creating noise, pollution and traffic congestion. Some of these effects may be unavoidable, but they can be substantially reduced by high standards of management. The guidelines in the "Best Management Practices" publication propose such standards, which are hereby adopted as policy in the coastal area. As noted in the discussion of Policy 14, the cooperation of upstream jurisdictions is essential since this phenomenon also transcends municipal boundaries in the drainage basins entering our coastal zone. The general guidelines which underlie the standards here cited, and which this policy requires to be complied with, are as follows: 1. The construction site, or facilities, should fit the land, particularly with regard to its limitations. 2. Natural ground contours should be followed as closely as possible and grading minimized. 50 3. Areas of steep slopes, where high cuts and fills may be required, should be avoided. 4. Extreme care should be exercised in areas adjacent to natural watercourses and in locating artificial drainageways so that their final gradient and resultant discharge velocity will not create additional erosion problems. 5. Natural protective vegetation should remain undisturbed if at all possible; otherwise plantings should compensate for the disturbance. 6. The amount of time that disturbed ground surfaces are exposed to the energy of rainfall and runoff water should be limited. 7. Runoff from upper watershed lands which would contribute runoff to areas subject to erosion should be diverted. 8. The velocity of the runoff water on all areas subject to erosion should be reduced below that necessary to erode the materials. 9. A ground cover should be applied sufficient to restrain erosion on that portion of the disturbed area undergoing no further active disturbance. 10. Runoff from a site should be collected and detained in sediment basins to trap pollutants which would otherwise be transported from the site. 11. Provision should be made for permanent protection of downstream banks and channels from the erosive effects of increased velocity and volume of runoff resulting from facilities constructed. 12. The angle for graded slopes and fills should be limited to an angle no greater than that which can be retained by vegetative cover or other erosion control devices or structures. 13. The length as well as the angle of graded slopes should be minimized to reduce the erosive velocity of runoff water. 14. Rather than merely minimize damage, the opportunity should be taken to improve site conditions wherever practicable. POLICY 15 MINING, EXCAVATION OR DREDGING IN COASTAL AREAS SHALL NOT SIGNIFICANTLY INTERFERE WITH THE NATURAL COASTAL PROCESSES WHICH SUPPLY BEACH MATERIALS TO LAND ADJACENT TO SUCH WATERS 51 AND SHALL BE UNDERTAKEN IN A MANNER WHICH WILL NOT CAUSE AN INCREASE IN EROSION OF SUCH LAND. Explanation of Policy: There is little beach material in the coastal area which is supplied to the adjacent land via natural coastal processes. Mining does not exist in this area. Excavation and dredging shall be done so that both the natural and manmade shoreline are not undermined and so that natural water movement is not changed in a manner that will increase erosion potential (also see Policies 13 and 35) . POLICY 16 PUBLIC FUNDS SHALL ONLY BE USED FOR EROSION PROTECTION STRUCTURES WHERE NECESSARY TO PROTECT HUMAN LIFE, AND NEW DEVELOPMENT WHICH REQUIRES A LOCATION WITHIN OR ADJACENT TO AN EROSION HAZARD AREA TO BE ABLE TO FUNCTION, OR EXISTING DEVEL- OPMENT: AND ONLY WHERE THE PUBLIC BENEFITS OUTWEIGH THE LONG TERM MONETARY AND OTHER COSTS INCLUDING THE POTENTIAL FOR INCREASING EROSION AND ADVERSE EFFECTS ON NATURAL PROTECTIVE FEATURES. Explanation of Policy: The local facts to which this policy applies are as stated in the Explanation of Policy 13. Projects contemplated under Policy 14, involving construction to protect property against erosion from upstream flooding, will conform to the criteria laid down in this policy. POLICY 17 WHENEVER POSSIBLE, USE NON-STRUCTURAL MEASURES TO MINIMIZE DAMAGE TO NATURAL RESOURCES AND PROPERTY FROM FLOODING AND EROSION. SUCH MEASURES SHALL INCLUDE: (1) THE SETBACK OF BUILDINGS AND STRUCTURES: (2) THE PLANTING OF VEGETATION AND THE INSTALLATION OF SAND FENCING AND DRAINAGE SYSTEMS; (3) THE RESHAPING OF BLUFFS; (4) THE FLOODPROOFING OF BUILDINGS OR THEIR ELEVATION ABOVE BASE FLOOD LEVEL. Explanation of Policy: This policy recognizes the potential adverse impacts of flooding and erosion, whether from coastal or upstream sources, upon development and upon natural protective features in the coastal area as well as the costs of protection against those hazards which structural measures entail. This policy shall apply to the planning, siting and design of proposed activities and development, including measures to protect existing activities and development. To ascertain consistency with the policy, it must be determined if any one, or a combination of, non-structural measures would afford the degree of protection appropriate both to the charac- ter and purpose of the activity or development, and to the hazard. If non-structural measures are determined to offer sufficient protection, then consistency with the policy would require the use of such measures, whenever possible. Application of the Flood Damage Prevention regulations, Best Management Practices guidelines for construction-related 52 activities (see Explanation of Policy 14A) , and SEQR proce- dures, will be effective in many instances as preventive measures. For some purposes, however, such as improved protection against flood damage, sewage backup, etc. , from upstream sources (see Section II, Parts 6, 7 and 8, and Policy 14) , nonstructural methods will have to be supplemented in some instances by structural measures. (For application of this policy to methods of controlling storm water discharge, see Policy 14, paragraph 3-b of Explanation.) GENERAL POLICY POLICY 18 TO SAFEGUARD THE VITAL ECONOMIC, SOCIAL AND ENVIRONMENTAL INTERESTS OF THE STATE AND OF ITS CITIZENS, PROPOSED MAJOR ACTIONS IN THE COASTAL AREA MUST GIVE FULL CONSIDERATION TO THOSE INTERESTS, AND TO THE SAFEGUARDS WHICH THE STATE HAS ESTABLISHED TO PROTECT VALUABLE COASTAL RESOURCE AREAS. Explanation of Policy: Proposed major actions may not be undertaken in the coastal area if they will significantly impair valuable coastal waters and resources, thus frustrating the achievement of the purposes of the safeguards which the State has established to protect those waters and resources. Proposed actions must take into account the social, economic and environmental interests of the State and its citizens in such matters that would affect natural resources, water levels and flows, shoreline damage, and recreation. Review under the SEQR process will allow a weighing of the costs and benefits of such actions to state interests. PUBLIC ACCESS POLICIES POLICY 19 PROTECT, MAINTAIN, AND INCREASE THE LEVEL AND TYPES OF ACCESS TO PUBLIC WATER-RELATED RECREATION RESOURCES AND FACILITIES SO THAT THESE RESOURCES AND FACILITIES MAY BE FULLY UTILIZED BY THE PUBLIC IN ACCORDANCE WITH REASONABLY ANTICIPATED PUBLIC RECREATION NEEDS AND PROTECTION OF HISTORIC AND NATURAL RE- SOURCES. IN PROVIDING SUCH ACCESS, PRIORITY SHALL BE GIVEN TO PUBLIC BEACHES, BOATING FACILITIES, FISHING AREAS AND WATER- FRONT PARKS. Explanation of Policy: The Larchmont/Mamaroneck coastal area includes many water-related recreation resources to which the public has varying degrees of access depending on the nature of the facility and its ownership, as discussed in Section II. Balance between the type, capacity, and intensity of use of a facility, and the protection of the resource itself and of the adjacent environment, must be maintained if the quality of these resources is to be preserved. In general the level of access to, and use of, recreational resources appears consis- tent with current needs and with the ability of the facility or 53 resource to accommodate it. Therefore, retention of present levels of access to existing facilities will be given priority. Future opportunities to increase access to active, water- dependent recreation resources should be carefully considered only if the potential impact of increased traffic and intensity of use on adjacent neighborhoods can be mitigated and adverse effect on the water environment avoided. Such increases, where desirable and feasible under these criteria, should, if possi- ble, be achieved by expanding access to existing facilities. POLICY 20 ACCESS TO THE PUBLICLY-OWNED FORESHORE AND TO LANDS IMMEDIATELY ADJACENT TO THE FORESHORE OR THE WATER'S EDGE THAT ARE PUBLICLY OWNED SHALL BE PROVIDED, AND IT SHOULD BE PROVIDED IN A MANNER COMPATIBLE WITH ADJOINING USES. SUCH LANDS SHALL BE RETAINED IN PUBLIC OWNERSHIP. Explanation of Policy: The principal publicly owned lands adjacent to the foreshore are five parcels of municipally owned land: the Premium and Hommocks Conservation areas, Flint Park, Lorenzen Park, and Woodbine Park. In each case except Flint Park, access is provided to the water' s edge for passive recreation activities. All such lands will be retained in public ownership and the existing level of access will be maintained unless damage to fragile environmental features mandates temporary or permanent limitations on access. Access from Flint Park to the foreshore (Little Harbor Sound) is largely blocked by the presence of the Village of Larchmont leaf disposal facility at the south end of the park. Steps will be taken by the Village to work out new arrangements for leaf disposal and, as soon as this is done, to adapt this area for public passive recreation, bearing in mind the need to protect the ecologically sensitive wildlife habitat in the • adjoining Hommocks Marsh. RECREATION POLICIES POLICY 21 WATER DEPENDENT AND WATER ENHANCED RECREATION WILL BE EN- COURAGED AND FACILITATED, AND WILL BE GIVEN PRIORITY OVER NON-WATER RELATED USES ALONG THE COAST, PROVIDED IT IS CONSIS- TENT WITH THE PRESERVATION AND ENHANCEMENT OF OTHER COASTAL RESOURCES AND TAKES INTO ACCOUNT DEMAND FOR SUCH FACILITIES. IN FACILITATING SUCH ACTIVITIES, PRIORITY SHALL BE GIVEN TO AREAS WHERE ACCESS TO THE RECREATION OPPORTUNITIES OF THE COAST CAN BE PROVIDED BY NEW OR EXISTING PUBLIC TRANSPORTATION SERVICES AND TO THOSE AREAS WHERE THE USE OF THE SHORE IS SEVERELY RESTRICTED BY EXISTING DEVELOPMENT. Explanation of Policy: Water-related recreation includes such obviously water-dependent activities as boating, swimming, and fishing as well as certain activities which are enhanced by a coastal location and increase the general public's access to 54 the coast such as pedestrian and bicycle trails, scenic over- looks and passive recreation areas that take advantage of coastal scenery. The Larchmont-Mamaroneck shoreline features a broad range of water-dependent and water-enhanced recreation facilities (see Section II-3-c and II-13) . The developed state of the shore leaves little scope for additional facilities. Therefore, the primary objective of this policy is to preserve those water- related facilities that now exist and to protect them against abuse, over use, and physical deterioration (see Policies 19, 20, and 30 through 39A) . In the event that any private water-related recreational facilities are in danger of conversion to other use, the local governments, in pursuance of the above objective, will endeavor to find ways by which the facilities can be maintained in a manner consistent with this policy and Policy 19, including the possibility of municipal ownership, in whole or in part, of such facilities. Within the limits set by the developed state of the shore, and provided that additional water-related recreational facilities can be created in a manner consistent with the preservation and enhancement of other important coastal resources including fish and wildlife habitats, aesthetically significant areas, and historical and cultural resources, and provided demand exists, water-related recreational development is to be increased and shall have a higher priority than any non-coastal-dependent uses, including non-water-related recreation uses; and water- dependent recreation uses shall take priority over recreation uses that are water-enhanced but not water-dependent. Recreation in the conservation areas will confined to passive, non-intensive activities such as bird watching, nature study, photography, etc. Swimming and boating on the Sound are to be encouraged, but not to an extent that will overtax the capacity of on-shore support facilities. Recreational lobstering and shellfishing will be enhanced if water quality is improved (see Policy 10A) . The balance between use of the resource on the one hand, and on the other hand the enjoyment and safety of users and integrity of the environment, must be constantly monitored. For example, additional moorings for boats should be encouraged only if on-shore parking and access facilities are available and if the new moorings will not inhibit safe navigation in the harbor. Conduct which degrades, endangers, or interferes with these activities, including vandalism and other unlawful or reckless conduct in the harbor, and unlawful discharge of sewage or litter or other pollutants from pleasure boats in municipal waters, will be controlled. To this end the Village of Larchmont will take steps to work out a clear sharing of responsibility for policing the harbor among the parties concerned (see also Policy 34) . 55 POLICY 22 DEVELOPMENT, WHEN LOCATED ADJACENT TO THE SHORE, SHALL PROVIDE Not Applicable FOR WATER-RELATED RECREATION, AS A MULTIPLE USE, WHENEVER SUCH RECREATIONAL USE IS APPROPRIATE IN LIGHT OF REASONABLY ANTIC- IPATED DEMAND FOR SUCH ACTIVITIES AND THE PRIMARY PURPOSE OF THE DEVELOPMENT. Not applicable. This policy calls for compatible inclusion of recreational facilities in new developments adjacent to the shore. Lands adjacent to the shore in this coastal area are already developed to their capacity and include a balance of residential and recreational uses. Thus, no need or opportuni- ty for new water-related recreation facilities as a multiple use is likely to arise here. HISTORIC AND SCENIC RESOURCES POLICY 23 - PROTECT AND RESTORE STRUCTURES, DISTRICTS, AREAS OR SITES THAT ARE OF SIGNIFICANCE IN THE HISTORY, ARCHITECTURE, ARCHEOLOGY OR CULTURE OF THE STATE, ITS COMMUNITIES OR THE NATION. Explanation of Policy: Among the most valuable of the State's manmade resources are structures or areas of historic, archeological, or cultural significance. Under State law, municipalities have the power to adopt regulations for the protection of these resources. In so doing they may designate, and provide for protection of, or in appropriate cases restora- tion and adaptive reuse of, specific sites or more extensive districts. New York State definitions of such significant resources include these categories that may be applicable to this area: -- A local landmark, park, or locally designated historic district that is located within the boundary of an approved local waterfront revitalization program. -- A resource on, or nominated to be on, or determined eligi- ble to be on, the National or State Register of Historic places. -- A resource on, or nominated to be on, the State Nature and Historic Preserve Trust. While the program is concerned with the preservation of all significant resources, as here defined, within the coastal boundary, it gives priority to the preservation of resources having a coastal relationship. The following structures, districts, and sites, among others, in the Larchmont-Mamaroneck coastal area are considered to be of historic, architectural, archaeological, or cultural significance meriting protection under this policy: • 56 1. Larchmont Manor Park, including the Horseshoe Harbor Yacht Club. 2. The neighborhood within Town of Mamaroneck Map 610, known as Larchmont Manor. 3. The Premium Mill Pond, dam, and associated structures, including the mill house. 4. The Larchmont Reservoir Conservancy. 5. The Winged Foot and Bonnie Briar Golf Clubs and the Hampshire Country Club. 6. The Quaker and Barker Cemeteries. 7. The Manor House at the head of Prospect Avenue. 8. The Larchmont Public Library, site of the original Samuel Palmer House. 9. The Indian rock shelter and rock face next to Pine Brook Park. 10. The former Weaver Street School house at 86 Weaver Street. This list is not intended to be exhaustive. Other sites, structures or areas may be considered for designation on the same footing with them. Structures, districts and sites designated pursuant to this policy shall be protected against significant adverse change or, where appropriate, restored or rehabilitated for adaptive reuse. In this context "adverse change" means, among other things, inappropriate alteration of or addition to the archi- tectural, structural, ornamental or functional features of a designated structure or of a significant structure in a des- ignated district; demolition or removal, in whole or in part, of such a structure; actions within 500 feet of such a struc- ture, or anywhere within such a district, that would be incom- patible by virture of location, scale, design, color, or similar characteristics, with the preservation of the quality and integrity of the designated structure or district. Pursuant to this policy the municipal governments will estab- lish appropriate procedures for designating significant re- sources and for accomplishing their protection or restoration. In addition, contacts with the State Historic Preservation Office, already initiated by the Larchmont Historical Society, will be pursued with regard to listing of sites in this area on the National or State Register of Historic Places. 57 This policy shall not be construed as preventing (1) the alteration or demolition of any structure when such action is certified by competent authority as necessary to avert an imminent danger to life or to public health; or (2) normal maintenance, repair, or proper restoration of a designated structure, not involving significant adverse change and in conformity with the U.S. Department of Interior "Standards for Rehabilitation" and "Guidelines for Rehabilitating Historic Buildings." POLICY 24 PREVENT IMPAIRMENT OF SCENIC RESOURCES OF STATEWIDE Not Applicable SIGNIFICANCE, AS IDENTIFIED ON THE COASTAL AREA MAP. IMPAIR- MENT SHALL INCLUDE: 1. THE IRREVERSIBLE MODIFICATION OF GEOLOGICAL FORMS, THE DESTRUCTION OR REMOVAL OF VEGETATION, THE DESTRUCTION OR REMOVAL OF STRUCTURES, WHEREVER THE GEOLOGIC FORMS, VEGE- TATION OR STRUCTURES ARE SIGNIFICANT TO THE SCENIC QUALITY OF AN IDENTIFIED RESOURCE; AND 2. THE ADDITION OF STRUCTURES WHICH BECAUSE OF SITING OR SCALE WILL REDUCE IDENTIFIED VIEWS OR WHICH BECAUSE OF SCALE, FORM, OR MATERIALS WILL DIMINISH THE SCENIC QUALITY OF AN IDENTIFIED RESOURCE. Not applicable. No scenic resources in this area have been identified on the New York State Coastal Area map as being of statewide significance, nor do the municipal governments intend to request that the map be amended to include any such re- source. POLICY 25 PROTECT, RESTORE AND ENHANCE NATURAL AND MANMADE RESOURCES WHICH ARE NOT IDENTIFIED AS BEING OF STATEWIDE SIGNIFICANCE, BUT WHICH CONTRIBUTE TO THE SCENIC QUALITY OF THE COASTAL AREA. Explanation of Policy: The Larchmont/Mamaroneck shoreline includes natural and historic features which in total comprise a diverse scenic resource of high quality. The pleasant blend of wetlands and marshes, landscaped parkland, geological forms of exceptional interest and beauty and attractive, water- oriented homes and recreation facilities, is unusual in the urbanized New York metropolitan area. Features of particular scenic quality on the shore include the Premium and Hommocks wetlands, the Larchmont Manor Park, the Larchmont Yacht Club, and the Larchmont Shore Club. Although not visible from the shore, Fountain Square, Memorial (Station) Park, the Sheldrake-Leatherstocking Conservation area, the Larchmont Reservoir-James G. Johnson Conservancy, the Brookside Drive-Gardens Lake area, and the Bonnie Briar, Winged Foot, and Hampshire golf courses all significantly contribute to the scenic quality of the entire coastal area. 58 Given the generally high visual quality of the coastal area, action under this policy will be directed primarily toward protecting existing features, but will also seek to assure compatibility in the siting and appearance of new structures. These purposes are served to a great extent by existing con- trols in both municipalities. Industrial, commercial, and multi-family residential uses are not permitted outside of zones near the Thruway, Palmer Avenue, and the Boston Post Road. The appearance of new construction or remodeled struc- tures in both the Village and the Town is subject to regu- lation. In the Village, designs may be disapproved on grounds of (among other things) monotonous similarity to nearby structures, visual offensiveness due to poor design, visual discord in relation to the site or surroundings, or characteristics that prevent appropriate use of adjacent lands. Site plan review regulations provide comparable safeguards in the Town. The size, character, and location of all outdoor signs is also regulated, and property owners are required to keep their properties clear of brush, weeds and unsightly materials. This policy reaffirms the above legal protections. In addi- tion, the following siting and development guidelines will be used when reviewing a proposed action that could affect scenic quality, recognizing that each development situation is unique and that the guidelines will have to be applied accordingly. a. Structures and other development such as power lines, pump stations, lights, high antennae, and signs should be of appropriate design and/or should be sited back from the shoreline or in other inconspicuous locations so as to maintain the attractive quality of the shoreline and to retain views to and from the shore. b. Structures should be oriented to retain views, save open space and provide visual organization to development. c. Existing structures of scenic or historical value, if structurally sound, should be retained and incorporated into the overall development scheme. d. Deteriorated or degrading elements should be removed or rebuilt. • e. The original land form should be maintained or restored, except when changes screen unattractive elements and/or add appropriate interest. f. Vegetation should be maintained or added to provide inter- est, encourage the presence of wildlife, blend structures into the site; and obscure unattractive elements, except 59 when selective clearing removes unsightly, diseased or hazardous vegetation or creates views of coastal waters. g. Other appropriate materials in addition to vegetation may be used to screen unattractive elements. h. Appropriate scales, forms and materials should be used to ensure that buildings and other structures are compatible with and add interest to the landscape. i. Actions should be avoided that would be out of keeping with the scenic character of a location because of intensity of use or potential for generating noise, visual annoyance, litter, traffic jams, or other nuisance. j . Where possible, erosion-protection structures in scenic or residential areas should be built of natural wood or stone materials that blend with their surroundings, rather than of manufactured materials (see Policy 13) . POLICY 25A TO LESSEN NOISE POLLUTION WHICH INTERFERES WITH ENJOYMENT OF SCENIC VALUES AND OTHER AMENITIES IN THE COASTAL AREA, (A) STANDARDS GOVERNING PERMITTED NOISE LEVELS FROM MACHINERY USED IN THE AREA WILL BE REVIEWED AND REVISED IF NECESSARY TO ASSURE ADEQUACY, AND ENFORCEMENT OF SUCH STANDARDS WILL BE GIVEN HIGHER PRIORITY; AND (B) RENEWED EFFORTS WILL BE MADE TO PERSUADE FEDERAL AUTHORITIES TO REDUCE AIRCRAFT NOISE, AND STATE AUTHORITIES TO REDUCE THRUWAY TRAFFIC NOISE, IN THIS COASTAL AREA. Explanation of Policy: Enjoyment of scenic values and other amenities in this residential community is substantially lessened by intermittent noise. The sources of noise most often complained of by Larchmont-Mamaroneck residents are overflying aircraft; trucks on the New England Thruway; boat engines; municipal or commercial machinery commonly used in residential neighborhoods such as garbage compactors; public address systems, loudspeakers and amplifiers; lawn mowers and leaf blowers. Standard noise limitations on all these sources are embodied in laws and regulations at various governmental levels but are difficult to enforce. The first two categories just mentioned, moreover, are outside local jurisdiction and can only be reached by appeal to higher authority. Neverthe- less, public demand for better noise control calls for more effective efforts. The municipal governments will continue to make such efforts pursuant to this policy. POLICY 26 CONSERVE AND PROTECT AGRICULTURAL LANDS IN THE STATE'S COASTAL Not Applicable AREA. Not applicable. There are no agricultural lands within this coastal area. 60 ENERGY AND ICE MANAGEMENT POLICIES POLICY 27 NOT INCLUDED IN THE LOCAL PROGRAM. POLICY 28 ICE MANAGEMENT PRACTICES SHALL NOT DAMAGE SIGNIFICANT FISH AND Not Applicable WILDLIFE AND THEIR HABITATS, INCREASE SHORELINE EROSION OR FLOODING, OR INTERFERE WITH THE PRODUCTION OF HYDROELECTRIC POWER. Not applicable. No significant ice management operations are conducted in this area. POLICY 29 NOT INCLUDED IN THE LOCAL PROGRAM. WATER AND AIR RESOURCES POLICIES POLICY 30 MUNICIPAL, INDUSTRIAL, COMMERCIAL AND RESIDENTIAL DISCHARGE OF POLLUTANTS, INCLUDING BUT NOT LIMITED TO, TOXIC AND HAZARDOUS SUBSTANCES, INTO COASTAL WATERS, WILL CONFORM TO STATE AND NATIONAL WATER QUALITY STANDARDS. Explanation of Policy: Excessive pollution of waters in the coastal zone is damaging to public health, the breeding and taking of edible fish, shellfish and crustaceans, water-related recreation, and (as noted under Policy 8) the ecology of wetlands and wildlife habitats. Effective adherence to the water quality standards invoked by this policy will prevent it. Pollutant discharges covered by this policy include "end-of-the-pipe" discharges into surface water and groundwater; runoff from plant sites; leaching; spillages; unlawful or damaging disposal of sludge, waste oil, and other polluting wastes; and drainage from raw material storage sites. Industrial discharges are covered if they empty directly into coastal waters or if they pass through municipal treatment systems before reaching coastal waters. All such discharges are governed by Federal and State laws and by regulations issued under them. Water quality standards are set for a wide range of toxic substances. To maintain these standards, a permit system limits rates of effluent discharge of specified toxic substances and other pollutants by indus- trial plants. These Federal and State regulatory systems are supplemented locally by certain legal prohibitions, notably those of the Freshwater Wetland laws in both Town and Village which prohibit or limit certain categories of pollutants in controlled areas. A Water Control Commission oversees enforcement of these prohibitions for both municipalities. The Westchester County Department of Health is responsible for monitoring coastal waters for pollutants dangerous to swimmers, and has the power 61 to forbid swimming when and where pollution is excessive; but implementation is inadequate. The Conservation Advisory Commission has a limited pollution monitoring capability which serves both municipal governments by identifying and tracing some common pollutants, including coliform pollution, as a basis for enforcement action. Taken together, these monitoring and regulatory activities at different levels of government go far toward assuring satisfac- tory water quality in the coastal zone. But constant and vigorous implementation of existing laws and regulations is essential, including adequate monitoring, identification and inspection of point sources, and prompt enforcement. In addition, further experience may show that new legislation is . necessary. Therefore the municipal governments will: 1. Take all practicable steps, both within their own juris- dictions and in cooperation with neighboring municipalities and higher levels of government as may be necessary, to apply existing legal and administrative machinery for water pollution monitoring and enforcement and for preventive inspection and maintenance of potential point sources; and, where appropriate, to strengthen such machinery. Local citizen participation in these efforts will be encouraged both for public education and for enforcement purposes. 2. Seek to assure, in concert with neighboring municipalities, that retail sellers of motor oil comply with the State statutory requirement that they shall accept waste oil for recycling and shall make this fact known to their custom- ers. 3. Urge the responsible Federal, State, and County authorities to require full secondary sewage treatment in all sewage treatment plants, without exception, along the Sound shore, in order to reduce organic pollution of nearby Sound waters. POLICY 31 STATE COASTAL AREA POLICIES AND PURPOSES OF APPROVED LOCAL WATERFRONT REVITALIZATION PROGRAMS WILL BE CONSIDERED WHILE REVIEWING COASTAL WATER CLASSIFICATIONS AND WHILE MODIFYING WATER QUALITY STANDARDS: HOWEVER, THOSE WATERS ALREADY OVER- BURDENED WITH CONTAMINANTS WILL BE RECOGNIZED AS BEING A DEVELOPMENT CONSTRAINT. Explanation of Policy: Pursuant to the Federal Clean Water Act of 1977 (PL 95-217) the State has classified its coastal and other waters in accordance with considerations of best usage in the interest of the public and has adopted water quality standards for each class of- waters. These classifications and standards are reviewable at least every three years for possi- ble revision or amendment. 62 Current classifications of fresh and saline waters in this area are given in Section II, part 3-h. Fresh-water classifications provide ample scope for proposed uses. Salt-water classifications are consistent with proposed uses except in the former shellfishing areas along the shore now classified SB. As noted under Policy 10A, efforts will be made to restore these areas to SA status. POLICY 32 ENCOURAGE THE USE OF ALTERNATIVE OR INNOVATIVE SANITARY WASTE SYSTEMS IN SMALL COMMUNITIES WHERE THE COSTS OF CONVENTIONAL FACILITIES ARE UNREASONABLY HIGH GIVEN THE SIZE OF THE EXISTING TAX BASE OF THESE COMMUNITIES. Explanation of Policy: Alternative systems include individual septic tanks and other subsurface disposal systems, dual systems, small systems serving clusters of households or commercial users, and pressure or vacuum sewers. These types of systems are often more cost-effective in smaller, less densely populated areas for which conventional facilities are too expensive. Although the entire coastal area is within public sanitary sewer districts, some homes are still served by on-site sani- tary systems. Where such homes cannot be connected to public sewer lines without unreasonable cost, the use of on-site systems will continue to be permitted provided that owners use those that are most effective and_pollution-free. However, see Policy 32A. POLICY 32A WHEREVER FEASIBLE AT REASONABLE COST, EXISTING ON-SITE SEWAGE DISPOSAL SYSTEMS SHALL BE ELIMINATED AND REPLACED BY DIRECT CONNECTION TO THE PUBLIC SEWAGE DISPOSAL SYSTEM. Explanation of Policy: On-site sanitary systems in this area have been found to be unreliable and pollution-prone in many instances. Therefore, in locations now served by such systems, where replacement of them by connection to public sewer systems would not be unreasonably costly, such action will be required. Otherwise the most effective and pollution-free on-site system will be required and will be closely monitored by municipal authorities to assure adequate performance. In all cases the objective will be the least risk of pollution consistent with acceptable cost. POLICY 33 BEST MANAGEMENT PRACTICES WILL BE USED TO ENSURE THE CONTROL OF STORMWATER RUNOFF AND COMBINED SEWER OVERFLOWS DRAINING INTO COASTAL WATERS. Explanation of Policy: The purpose of this policy is to improve the quality of coastal waters by minimizing pollution from stormwater runoff and combined sewer overflows. Best management practices applicable to this purpose include both 63 structural and non-structural methods. In some cases struc- tural methods, such as construction of detention basins or replacement of combined sewer systems with separate sanitary and stormwater collection systems, are appropriate and will be used. In other cases, however, structural methods are inappro- priate or excessively costly. Moreover, such methods alone cannot achieve the stated purpose as well as if they are combined with non-structural best management practices such as improved street cleaning, reduced use of road salt, and control of runoff from construction sites (see Policy 14A) . Non-structural best management practices, therefore, will be required or encouraged to the greatest extent appropriate and feasible for the purposes of this policy. POLICY 33A TO ELIMINATE DISCHARGE OF RAW SEWAGE INTO COASTAL WATERS AND RESIDENTIAL AREAS DURING STORMS, ALL CONNECTIONS WHICH CARRY STORMWATER RUNOFF INTO THE SANITARY SEWER SYSTEM SHALL BE PROHIBITED AND APPROPRIATE ADMINISTRATIVE, LEGAL AND PHYSICAL ACTIONS SHALL BE TAKEN AS EXPEDITIOUSLY AS POSSIBLE TO REMOVE ALL SUCH CONNECTIONS. Explanation of Policy: A principal factor contributing to pollution in the coastal area is the connection of public and private storm water drains, in many cases illegally, to the public sanitary sewer system. The increased flow resulting from this practice exceeds the capacity of the sewage treatment plant and leads to discharge of raw sewage into streets, basements, and coastal waters and the closing of beaches during periods of heavy rain. The elimination and prevention of such conditions is an especially important objective of the communi- ty. POLICY 34 DISCHARGE OF WASTE MATERIALS INTO COASTAL WATERS FROM VESSELS WILL BE LIMITED SO AS TO PROTECT SIGNIFICANT FISH AND WILDLIFE HABITATS, RECREATIONAL AREAS AND WATER SUPPLY AREAS. Explanation of Policy: The discharge of sewage, garbage, rubbish, and other solid and liquid materials from watercraft and marinas into the State's waters is regulated by State law. Priority will be given to the enforcement of this law in areas where such discharges may damage shellfish beds, fish and wildlife habitats, or waters and beaches used for swimming and other recreation. Specific effluent standards for marine toilets have been promulgated by the Department of Environ- mental Conservation (6 NYCRR, Part 657) . These standards, as well as other applicable laws and regulations concerning litter and pollution from vessels in coastal waters, shall be strictly enforced by the responsible authorities. The municipal governments will keep this matter under review to assure fulfillment of this policy. 64 POLICY 35 DREDGING AND DREDGE SPOIL DISPOSAL IN COASTAL WATERS WILL BE UNDERTAKEN IN A MANNER THAT MEETS EXISTING STATE AND FEDERAL DREDGING PERMIT REQUIREMENTS, AND PROTECTS SIGNIFICANT FISH AND WILDLIFE HABITATS, SCENIC RESOURCES, NATURAL PROTECTIVE FEA- TURES, IMPORTANT AGRICULTURAL LANDS, AND WETLANDS. Explanation of Policy: Periodic dredging in this area is necessary for several purposes, primarily for maintenance of navigational channels at sufficient depths for recreational boating. In addition, actions to counter the effects of siltation and erosion in the Premium and Hommocks marshes (see Policies 7A and 14) , and thereby to restore and maintain their ecological, recreational, and scenic value, may include dredg- ing and also possibly some dredge spoil disposal within the area if technical studies show that environmental benefits, such as the creation of new salt marshes, can be gained there- by. However, dredging projects, including dredge spoil disposal, may adversely affect water quality, fish and wildlife habitats, wetlands, and other important coastal resources. Such effects can be avoided or minimized by careful design and timing and by proper siting of spoil disposal. The municipal governments will assure that dredging operations in this area are in conformity with these principles and with State dredging permit requirements. They will also endeavor to bring about, and to participate in, a coordinated dredging program for neighboring Sound shore communities as a means of obtaining high-quality service at acceptable cost. Operation of any such program within this coastal area will be subject to this policy. POLICY 36 ACTIVITIES RELATED TO THE SHIPMENT AND STORAGE OF PETROLEUM AND OTHER HAZARDOUS MATERIALS WILL BE CONDUCTED IN A MANNER THAT WILL PREVENT OR AT LEAST MINIMIZE SPILLS INTO COASTAL WATERS; ALL PRACTICABLE EFFORTS WILL BE UNDERTAKEN TO EXPEDITE THE CLEANUP OF SUCH DISCHARGES; AND RESTITUTION FOR DAMAGES WILL BE REQUIRED WHEN THESE SPILLS OCCUR. Explanation of Policy: This policy shall apply not only to commercial storage and distribution facilities but also to residential and other users of petroleum products and radio- active and other toxic or hazardous materials. Spills, seepage or other accidents which occur on or adjacent to coastal waters or which, by virtue of natural or manmade drainage facilities, eventually reach coastal waters, are included under this policy. The municipal governments will act vigorously under the appli- cable laws and regulations (including the New York State Petroleum Bulk Storage Act of 1983 and regulations issued or to 65 be issued thereunder) to prevent or control such discharges, to minimize damage from them, and to obtain full and prompt compensation for the damage and costs caused by them. To this end they will seek the cooperation of neighboring and upstream municipalities and of the State and County authorities concerned. POLICY 37 BEST MANAGEMENT PRACTICES WILL BE UTILIZED TO MINIMIZE THE NONPOINT DISCHARGE OF EXCESS NUTRIENTS, ORGANICS AND ERODED SOILS INTO COASTAL WATERS. Explanation of Policy: Best management practices used to reduce these categories of pollution include, but are not limited to, encouraging organic gardening and pest management as alternatives to the use of chemical fertilizers and pesticides; soil erosion control; surface drainage control; and erosion and sediment control practices on construction projects as described under Policies 14A and 33. The municipal governments will conform to these practices in their own operations to the greatest practicable extent, and will encourage property owners, especially owners of larger properties, in the coastal area to do likewise. Also important for achievement of the purposes of this policy are the steps to be taken under Policies 33A and 39A. POLICY 38 THE QUALITY AND QUANTITY OF SURFACE WATER AND GROUNDWATER SUPPLIES WILL BE CONSERVED AND PROTECTED, PARTICULARLY WHERE SUCH WATER CONSTITUTES THE PRIMARY OR SOLE SOURCE OF WATER SUPPLY. Explanation of Policy: The only water supply source to which this policy may apply is the Upper Reservoir (Sheldrake Lake) in the Larchmont Reservoir-James G. Johnson Conservancy. Although outside our Coastal Zone boundary, it is part of a property owned by the Village of Larchmont and dedicated by it to public use (see Section II, part 3-g-3) . It is no longer used as a regular water supply, but one of the uses specified in the October 1984 act of dedication is "standby water supply" in case of severe water shortage. Bearing in mind this use, the Village will make every effort to assure that the Upper Reservoir's water remains in State classification A ("all uses") , and will frame and enforce such rules as will promote this purpose. The necessary cooperation of upstream municipal- ities and of the Westchester County government will be sought in this connection. POLICY 39 THE TRANSPORT, STORAGE, TREATMENT AND DISPOSAL OF SOLID WASTES, PARTICULARLY HAZARDOUS WASTES, WITHIN COASTAL AREAS WILL BE CONDUCTED IN SUCH A MANNER AS TO PROTECT GROUNDWATER AND SURFACE WATER SUPPLIES, SIGNIFICANT FISH AND WILDLIFE HABITATS, RECREATION AREAS, IMPORTANT AGRICULTURAL LANDS AND SCENIC RESOURCES. 66 Explanation of Policy: Federal and State laws provide a substantial base for regulation of the transport, storage, treatment, and disposal of solid wastes, particularly hazardous wastes. Strict enforcement of these regulations by the respon- sible authorities is extremely important to protect public health, the wetlands, fish and wildlife habitats, and water- related recreational resources of the coastal area. Especially important is adequate regulation of the transport of hazardous wastes through or near this coastal area, whether by land or on the nearby waters of Long Island Sound. Solid wastes in this area consist primarily of garbage and refuse from households and retail stores, and construction debris. As far as is known, no significant quantities of hazardous wastes enter the local solid waste stream. Patterns of garbage and refuse collection and disposal in the coastal area have generally been such as to have little impact on the resources enumerated in this policy other than some contribution to street litter (see Policy 39A) . However, uncontrolled and illegal dumping -- a detriment to ecological and scenic values and potentially to public health -- continues in several locations including vacant lots, parks, and the Village leaf disposal facility at the south end of Flint Park. The replacement of this facility as soon as possible by a suitable alternative mode of leaf disposal for the Village, and the restoration of the site, will, among other benefits, help to eliminate this form of pollution in that scenically attrac- tive and ecologically sensitive location. Corrective action will be taken by the municipal governments in the affected locations in a manner that will satisfy the requirements of this policy. POLICY 39A LITTER AND DOG WASTE SHALL BE STRICTLY CONTROLLED IN THE COASTAL AREA Explanation of Policy: Litter and dog waste create pervasive problems of pollution and "uglification" along streets and shoreline and in conservation and recreation areas in the coastal area. The problem has numerous sources including: illegal dumping in vacant lots, roadsides, stream beds, etc. ; inadequate containment of household and commercial garbage and refuse before and/or during collection; wind-scattering of unsecured newspapers; casual discard of consumer items, chiefly containers and printed matter, by individuals; and failure of many persons walking dogs to clean up after them. Despite municipal laws against these practices and vigorous anti-litter measures by concerned civic and neighborhood organizations, the problems remain. 67 The municipal governments will work with concerned organiza- tions and community leaders in renewed efforts to deal with these quality-of-life problems more effectively. They will study the most effective control techniques in comparable communities including action programs, incentives, penalties, means of enforcement, and educational efforts at all levels. The most promising and appropriate techniques will be tried locally and their effectiveness periodically evaluated. POLICY 40 NOT INCLUDED IN LOCAL PROGRAM. POLICY 41 NOT INCLUDED IN LOCAL PROGRAM. POLICY 42 NOT INCLUDED IN LOCAL PROGRAM. POLICY 43 NOT INCLUDED IN LOCAL PROGRAM. POLICY 44 PRESERVE AND PROTECT TIDAL AND FRESHWATER WETLANDS AND PRESERVE THE BENEFITS DERIVED FROM THESE AREAS. Explanation of Policy: Freshwater wetlands include marshes, swamps, bogs, and flats supporting aquatic and semi-aquatic vegetation and other wetlands so defined in the New York State Freshwater Wetlands Act and the NYS Protection of Waters Act. Tidal wetlands include the following ecological zones: coastal fresh marsh; intertidal marsh; coastal shoals, bars and flats; littoral zone; high marsh or salt meadow; and formerly connect- ed tidal wetlands. These tidal wetland areas are officially delineated on the Department of Environmental Conservation's Tidal Wetlands Inventory map. The benefits derived from the preservation of tidal and freshwater wetlands include but are not limited to: a. habitat for wildlife and fish and contribution to associ- ated aquatic food chains; b. erosion, flood and storm control; c. natural pollution treatment; d. groundwater protection; e. recreational opportunities; f. educational and scientific opportunities; and g. aesthetic open space in developed areas. Major portions of the wetland complexes in this area (see Map 9) , both freshwater and tidal, are protected as Town 68 conservation areas. Their designation as Wildlife Habitats under Policy 7 (or 7A) will provide added protection against adverse impact from actions nearby. However, the problem of protecting these areas is complicated by municipal boundaries. In the Premium area, the wetland complex, which is a major factor in local control of flooding, erosion and pollution, extends beyond the local coastal zone boundary into New Rochelle. The same is true of the Larchmont Reservoir area. Moreover, as is noted in the wildlife habitat narrative (Section II-4) , all three wetland areas lie in watersheds originating wholly or partly beyond our municipal boundaries and are thus vulnerable to upstream impacts beyond local control. Accordingly, the municipal governments will seek the cooperation of the upstream municipalities in the implementation of this policy. They will also consider des- ignating additional freshwater wetlands meriting protection. POLICY 44A RESTORE TIDAL AND FRESHWATER WETLANDS ALREADY DAMAGED BY EROSION, SILTATION, AND POLLUTION Explanation of Policy: Preservation and protection of wetlands from future damage, mandated by Policy 44, must be supplemented in this coastal area by measures to restore, insofar as possi- ble, wetlands already damaged. This policy applies especially to the two tidal wetland complexes, which have suffered cumula- tive damage from upstream sources for many years; but some similar damage to the Reservoir-Sheldrake-Leatherstocking wetland complex has also occurred and requires restorative action. A staged program to correct damage from siltation, erosion, and pollution will therefore be combined with the protective measures under Policy 44 and with measures under Policy 7 (or 7A) concerning the wildlife habitats centering on all these wetlands. This program will be designed and carried out in appropriate cooperation with the City of New Rochelle and the Village of Mamaroneck, in whose jurisdictional control major parts of the three wetland complexes, and/or of the upstream sources of damage to them, are located. Specific implementation measures will be designed or revised in the light of, but need not in all cases await, the results of the technical, hydrological, and feasibility studies called for in Policy 14. 69 as s �'7 `.-.. 4-_. Ar,� , gst �l `t , ` it �' { k E 1 / ,.z i _ - , 4. i. . il(Y �: ♦.. �� �• IVT � � St!'� ,��'��§ ar 1 yy�� r { " ifs YJl ,40 • VILLAGE TOWN OF OF LARCHMONT MAMARONECK The preparation of this report was financially aided through a federal grant from the Office of * - ' , , Ocean and Coastal Resource Management, '- `A9:- National Oceanic and Atmospheric Admin- 1m, 1--, istration under the Coastal Zone Management Act of 1972, as amended. This report was .Y prepared for the New York Department of ` ` 1 . ` . , _ ... State. - 4pi fl w.- , i r 4--- pix .. h. rp i a •, .„.,4,yx44- xt. pt s I � r ..� � isr,-- �� -�te '�,‘� SECTION IV ' �+� .--.�•., ..sem.;__ --1,-.---,—.-t. ` .4 .,4 4 ;�I'� _ ,r{ :� PROPOSED LAND xii. '•� �� ' AND WATER U } � x \ USES. t. AND PROJECTS J SECTION IV: PROPOSED LAND AND WATER USES AND PROPOSED PROJECTS A. Proposed Land and Water Uses The basic land use pattern in the Town and Village is well defined. Local zoning regulations and planning decisions have fostered a generally harmo- nious relationship between different types of uses (see Map 7, Generalized Existing Zoning) . However, there are several situations in which changes in this pattern, or in the land use regulations that govern its future evolution, would serve the policy objectives of the Program. An additional situation, in which an important recent land use decision calls for a complex of implementing actions, also merits comment. The areas involved are: 1. Some 428 acres, occupied by three private golf courses, which have substantial development potential and hence a potential impact on drainage patterns and open space preservation; also, certain other large properties with similar potential in the northern part of the Town. 2. Two commercial nurseries side-by-side on the Post Road, adjoining the Pine Brook-Premium area. 3. The waterfront from Hommocks Point west to the Larchmont Shore Club. In this district two problems require attention: a potential threat to scenic values if any of the larger shorefront residential prop- erties were to be subdivided and a potential for reduction in private water-dependent recreational facilities. 4. The Larchmont Reservoir Conservancy, 60 acres of largely open space, has recently been dedicated by its owner, the Village of Larchmont, in perpetuity to public uses including flood control, wildlife preserva- tion, nature study, _standby water supply and other compatible uses. Complex planning and other actions will be necessary for full and timely implementation of this important decision. The proposed treatment of these situations is set forth below. Otherwise, the LWRP contemplates no changes in the existing land and water use pattern (see Map 9, Proposed Land and Water Use) . 1. Substantial Areas of Open Space The importance of open space in the implementation of coastal policies has been stressed in the Explanations of Policy 14 (control of upstream flooding and erosion) , 7/7A, 44, and 44A (protection of fish and wildlife habitats and wetlands) , 21 (passive recreation) and 25 (scenic preservation) . In view of the limited amount of public open space in this coastal area (see Inventory, part 3-g) , remaining privately owned open space takes on critical importance. No substantial areas of privately owned open space remain in the Village of Larchmont except for the Larchmont Manor Park and the two 70 shoreline clubs, whose location is not relevant to problems of upstream flood control and whose value for the other purposes just referred to is provided for elsewhere in this Program. The unincorporated area, however, contains a number of undeveloped private properties of significant size whose development under existing land use laws could frustrate or prevent fulfillment of the policies and purposes referred to above. To a lesser extent, the same is true of the potential development of smaller undeveloped parcels in flood-prone or environmentally sensitive locations in both Village and Town. Most important in this regard are the largest of the remaining properties, all of them in the Sheldrake drainage basin. The Bonnie Briar and Winged Foot golf courses occupy some 420 acres. Lying between them are other undeveloped properties of significant size totaling about 70 acres. Taken together, these properties comprise well over half of the unincorporated area's R-30 zoning district. Also of key significance, although on a smaller scale, is the 8-acre portion of the Hampshire Country Club golf course lying within the unincorporated area (the remainder of the property is in the Village of Mamaroneck) . This small area is zoned R-7.5. It lies just upstream from the environmentally sensitive Hommocks Marsh, whose restoration and protection from flooding, siltation and pollution are important objectives provided for elsewhere in this Program. Were any of these properties, or other parcels of substantial size in sensitive or flood-prone locations, be developed without adequate control--replacing open land with roads, parking areas, roofs and other hard surfaces, altering land contours, covering stream beds, removing trees and thickets, further burdening sewage facilities and increasing traffic and noise--the result could be a substantial alteration for the worse in drainage patterns, runoff rates, flooding, erosion and pollution, with consequent deterioration of residential, wildlife, recreational and scenic values which are already threatened by existing conditions. The golf clubs are appropriate uses which provide open space and natural water retention. They should remain in their present use if possible. Should any portion of them, or of other similarly significant properties, be developed, land use and site development decisions concerning them must not merely avoid aggravating downstream flooding, but must mitigate it. This objective will remain in effect as an element in the strategy for management of our three drainage basins unless and until that strategy is modified in the light of the studies called for in part B-2 of this section. As a second objective, almost as important, any development in such locations must maintain to the maximum extent possible the few remaining open spaces in the Town which serve as habitats for wildlife and offer visual relief in an otherwise highly developed area. 71 To achieve these objectives, the applicable land use regulations of the Town of Mamaroneck, and where applicable of the Village of Larchmont, will be amended to provide as follows: a. As provided in Policy 14, paragraph 3-b, any development on a parcel exceeding 10,000 square feet in area shall be so designed as to prevent any increase in the rate of runoff from the site, or any decrease in the rate of upstream runoff into the site, as determined prior to development. b. In case of development of any parcel of 5 acres or more, the development shall be so designed, through contouring of land, water retention measures, or other means, as to reduce the pre-existing rate of runoff from the property by at least 10 percent without causing any decrease in the rate of upstream runoff into the site. This rule will apply except where the developer demonstrates by certified hydrological and other relevant studies that other measures would be more effective and appropriate in achieving the above objectives, in which case such other measures will apply. c. The Town zoning ordinance will be amended to redesignate the portion of the Hampshire Country Club property lying within the unincorporated area as part of the R-30 zone. d. The Town will urgently request the Federal Emergency Management Agency to resurvey the unincorporated area and bring the Flood Insurance Rate Map for the Town up to date in the light of recent local flood experience. e. Pending the revision of the Flood Insurance Rate Map, the Town, in order to assure timely and adequate control over development in and near flood-prone areas, will make the Town's Flood Damage Prevention Law applicable to all areas delineated by the Town as flood plains, flood hazard areas or floodways on an interim map based on a professional engineering survey and on the most reliable and current data concerning actual flood experience. f. To assure timely and adequate control over development in and near freshwater wetlands, the Town will prepare at the earliest possible date, and will incorporate in its revised Freshwater Wetlands Law, a complete and accurate Freshwater Wetlands Map showing the wetlands and other controlled areas to which the Freshwater Wetlands Law applies. This 1976 law, described in Section V-A-1--when revised to include such a map and when further revised, as planned, to conform with and give effect to • current State law on the subject--will provide an adequate basis for controlling development in or near freshwater wetlands (including river overflow areas) , rainfall drainage systems, and ponds, lakes and reservoirs. In the absence of the required Freshwater Wetlands map, the law by itself can have little effect. 72 2. Post Road Locations • The two nursery properties along the Post Road, both in the Village of Larchmont, are nonconforming uses in an area zoned R-7.5. Operation of a commercial nursery adjoining a high bank along Pine Brook has led to chronic problems of siltation and visual degradation. Should this property or its neighbor, or both of them, be developed for residen- tial use, the environmental impact on the Pine Brook-Premium area, including the adjacent Premium River and Marsh, must be closely monitored and proper regulation applied. In order to promote environ- mentally sound use of these properties, Village authorities, in any future land use decisions concerning them, will apply such conditions and procedures, including site plan review requirements and environ- mental impact statements, as are appropriate in the light of policies in this Program concerning wildlife habitats, wetlands, flood and siltation/erosion control, and protection of scenic quality; and will bear in mind the status of any 'portions of the Pine Brook-Premium area, adjacent to or downstream from these properties, that are or may be designated as a Critical Environmental Area or a significant or important wildlife habitat pursuant to this Program. 3. The Waterfront District A number of objectives for the waterfront area are stated in Section III: to preserve water-dependent uses (Policy 2) ; to limit develop- ment in flood hazard areas (Policy 11) ; to assure that development 41110 protects natural protective features (Policy 12) ; to maintain water-related recreational facilities and access thereto (Policies 19 and 21) and, to the extent consistent with other policy objectives and stated criteria, to increase such access (Policy 19) ; to protect historic structures and sites (Policy 23) ; to preserve scenic quality (Policy 25) ; and to protect and restore wildlife habitats and wetlands (Policies 7/7A, 44, 44A) . In applying land use regulation to the furtherance of these objec- tives, it is useful to deal with private and public properties as separate categories. a. Private Properties Of the private waterfront in this coastal area that touches the open water of Long Island Sound or its bays and inlets, nearly half of that lying in the Village, and all of that lying in the unincorporated area, is occupied by single-family residences which benefit from the use and view of the water. In addition, this category includes three important nonresidential uses in the Village: the Larchmont Yacht Club, the Larchmont Manor Park (including the Larchmont Manor Beach and the Horseshoe Harbor Yacht Club) , and the Larchmont Shore Club. These three prop- erties provide recreational access to, and use of, the waterfront to many Village and Town residents, as well as residents of other • communities, as explained in Section II. Moreover, their use is 73 compatible with ecological values in the wetlands and fish and wildlife habitats nearby. The primary means of controlling land use in this district is zoning. All private properties fronting on the open waters of the Sound, in both the Village and the unincorporated area, are zoned R-30. The same is true of properties in the Village bordering the Premium Millpond and the lowest portion of the Premium River, and in the unincorporated area along the north (Little Harbor Sound) site of Hommocks Road. Although this classification is generally appropriate, in two respects it can frustrate attainment of the stated policies. First, more than a dozen single-family residences in the R-30 zone each have more than double the required 30,000-square-foot lot area and could be subdivided. In other cases, where several adjoining properties each substantially exceed the 30,000-square foot minimum, an additional lot could be assembled from portions of them. Any such action would impair the scenic low-density character of the shoreline and views of the water from adjacent streets. Second, in the Village of Larchmont where all three of the nonresidential waterfront properties are located, any of them could, insofar as Village law is concerned, be converted to R-30 residential use, thus greatly reducing the present degree of recreational access and possibly damaging the ecological values nearby. (In the case of the Larchmont Manor Park, a substantial bar to such conversion exists in deed restrictions.) Accordingly, in order to adapt land use controls more fully to the policy objectives referred to above, the following steps will be taken: (1) The R-30 district regulations in both Village and Town will be amended to require that any new lot created from properties fronting on the Sound or its tidal inlets shall be at least 50,000 square feet in area. (2) The two municipal governments will take such additional steps in regard to land use, in the light of the foregoing discussion, as may be appropriate to prevent reduction of existing waterfront recreational facilities or of access thereto, and to implement the provisions of Policies 2, 11, 12, 19, 21 and 25. b. Public Properties near the Waterfront As noted in Section II, the only public properties of significant size near the shore are those adjacent to the East Creek-Hommocks and Premium tidal estuaries. In the former case these consist of the Hommocks Conservation Area, the adjoining Hommocks playing field, and Flint Park, which abuts the open stretch of East Creek at its northern end and the Hommocks Marsh on the south. In the Premium area the main public property is the Premium Conservation 74 Area, with the smaller Lorenzen and Woodbine Parks further upstream, and a small patch of tidal marsh at the foot of Oak Avenue. Since all these areas contain or adjoin vulnerable wetlands and wildlife habitats unsuitable for any high-intensity use, appro- priate limitation of activity in them is essential to implement Policies 7, 7A, 8, 9, 11, 12, 14, 25, 44 and 44A. In fact, such limitation, with two exceptions to be corrected by physical projects (see IV-B-10 below) , now prevails. Incompatible activ- ities, including active non-water-dependent recreational facil- ities (tennis, baseball, etc.) are located at a distance from the wetlands, and the latter are either maintained in their wild state or adapted for low-intensity passive recreation only. No change in land use categories is necessary in these public waterfront properties. All of them will be retained in public ownership and confined to conservation and such recreation or other activity as is compatible with conservation. The use of public property could in future play a larger role in water-related recreation in the waterfront district than it does now. However, as Section II makes clear, properties now in public ownership in this district that are suitable for passive recreation only are already in use for that purpose, except for the two sites discussed in IV-B-10 below. As for active water-dependent recreation, the only existing public property that could be considered for such use consists of small patches of shore at the ends of Village streets, whose recreational potential is small at best. If in the future either municipal- ity, through bequest, gift, easement, or otherwise should ac- quire, or obtain the use of, significant waterfront property in ' this area suitable for recreation, the adaptation, regulation, and management of such property for recreational purposes should give due weight to all relevant factors, including the supply of and demand for recreational facilities in the community; the residential character of the area; and the need for enforceable regulation and effective control to protect the natural and manmade environment. In this connection, it is understood explicitly that zoning and land use determinations for the unincorporated area are exclusively the province of the Town Council and zoning and land use determinations for the Village of Larchmont are exclusively the province of the Village Board. 4. The Larchmont Reservoir Conservancy The nature and functions of the Larchmont Reservoir Conservancy were described in Section II. In October 1984 a solid legal basis was laid for further realization of the potential of this property for public benefit when its owner, the Village of Larchmont, dedicated it in perpetuity as a conservation area for the public purposes described in Section II, part 3-g-3. This act of dedication, unless revoked by an act of the New York State 75 Legislature, will prevent development of the property and pre- serve it permanently for the stipulated public uses. The use and further improvement of the Reservoir property for flood control, wildlife protection, standby water supply, and passive recreation will be- considered an integral part of this Program. Appropriate and timely steps to develop these functions will be given priority, and those actions relating to flood control will be integrated into the strategy for management of the Sheldrake watershed (see Policy 14 and item B-2 below) . B. Proposed Physical Projects The physical projects which are part of this Program are described below; legal and administrative measures to implement the program are set forth in Section V (see also Map 8) . The ten projects described in this subsection are the result of a careful selection process. The Inventory and Analysis, plus subse- quent discussion and research, identified an extensive list of poten- tial physical projects addressing particular issues and objectives. An "issues and actions matrix" was then used by the Committee to evaluate the extent of benefit and feasibility of each suggested project. The final list includes only those which the Committee feels can be justified under these criteria. The projects described below are summarized in Table 1 on page IV-10. The table also gives a preliminary cost estimate for each project and indicates the policies to which it relates. A suggested timetable for completion of each project appears below the list. 1. Premium Feasibility Study The residential and conservation area centering on the Premium River, Marsh and Millpond has great ecological, scenic, and recreational value. Its problems, discussed in Section II, are many -- among them being flooding, siltation, erosion, pollution, deterioration of the conservation area, lowered water quality, and a potential for damage to the protective barrier of the Premium Point Beach. Among possible measures to be studied are dredging of the Premium River to increase stream flow, with possible use of the dredge spoil to build a salt marsh at the edge of the pond; stabilization of river and marsh banks with gabions and/or vegetation; and repair of seawalls and bridges. Prior to undertaking specific improvements, a detailed feasibility study must be made to assess the hydrological, water quality, and other physical characteristics of this area, evaluate the advantages and drawbacks of particular actions or combinations of actions, and weigh alternatives, staging, pri- orities, costs and impacts. Such a study, in addition to its immediate value, will provide important information for subse- quent development of the intermunicipal flood and erosion control 76 strategy for the Pine Brook-Premium watershed proposed in Policy 14. Since a large part of the Premium area and most of the Pine Brook watershed are in New Rochelle, this study will require the cooperation of that municipality. Based on this study, appropriate physical actions can proceed in the most logical and beneficial fashion and will be considered a part of this Program. 2. Upper Sheldrake and Larchmont Reservoir Feasibility Study A long-term strategy for flood and erosion control in the Sheldrake watershed will make maximum use of existing resources, especially remaining open space and the water-retention capacity of the Larchmont Reservoir. Some steps to enhance these re- sources can be taken without further study, as soon as financing is arranged: for example, automation of the valve in the Upper Reservoir dam and repair of weak spots in the lower dam and spillway. However, the strategy is also likely to include other actions, some of them extensive and costly, the advantages and drawbacks of which, separately and in combination, can only be established by a well designed feasibility study. Such a study will be undertaken and will include a hydrological study of the East Branch of the Sheldrake to complement that already made of the West Branch. Since such a hydrological study will cover areas upstream in New Rochelle and Scarsdale, the cooperation of those municipalities will be sought. The feasibility study should consider a variety of physical actions to improve flood control and prevent the accumulation or silt and litter, such as: -- installation of improved early warning facilities in coop- eration with Westchester County; -- installation of trash traps in the best locations and adoption of an adequate program for keeping them cleaned out; -- restoration of the dam and valve at Carpenter's Pond for use as an additional flood control facility; -- periodic cleaning out of Dickerman's Pond to maintain its value as a silt trap; -- periodic dredging of the Upper Reservoir (Sheldrake Lake) in order to increase its retention capacity and/or to limit siltation downstream; -- construction of an orifice in the face of the upper dam at the Reservoir to provide maximum drainage in flood con- ditions without exceeding the downstream capacity of the Sheldrake River. • 77 All such measures will be evaluated in the light of the analysis of the hydrological studies referred to above. They will be carried out only to the extent that, in addition to meeting other relevant criteria, they are (a) compatible with the standby water supply, fish and wildlife, aesthetic, and recreational values of the Reservoir property; and (b) found to be valuable elements in a strategy which will include the physical improvements described in paragraphs 3. and 4. below as well as the zoning and other legal and administrative measures contained elsewhere in this Program to protect the Sheldrake floodplain and reduce rates of storm water runoff. 3. Upper Sheldrake River (West Branch) Improvements For many years improvements to the Sheldrake River (West Branch) stream bed, from the Sheldrake Conservation Area downstream to its confluence with the East Branch, have been proposed to relieve flooding of adjacent streets and properties. Once included in a proposed Corps of Engineers project, this section has since been deleted; but the problem still exists. A scaled-down project has been proposed by the Town Engineer, including excavation to deepen the channel and remove ob- structions, stabilization of stream banks with gabions, underpin- ning of bridges as required, and construction of a stilling basin at the downstream end of the project in order to mitigate flood- ing further downstream. This project will be designed to achieve its purpose with the least practicable disruption of natural features and scenery, retaining features which do not impede water flow and using natural materials wherever possible in new construction. It can be undertaken in stages as financing and manpower permit. An annual allocation will be placed in the Town budget to initiate this project, and other funding sources will be pursued. 4. Upper Sheldrake River (East Branch) Retention Basin In order to regulate storm runoff, a County-sponsored drainage plan as long ago as 1945 recommended creation of a retention basin on the east branch of the Sheldrake just above Rockland Avenue. This plan still has merit, although its size has been limited by subsequent development in the area. A dam will be built at Rockland Avenue, causing storm water to back up into the Sheldrake Conservation area, and thereby delaying the arrival of runoff at the juncture of the two branches. It may be possible for this project to be designed and constructed by Town staff. 5. Large Silt Traps Silt, trash, and other pollutants, as was noted in Section II, enter the Premium and Hommocks marshes from upstream sources. To prevent this, large silt traps, equipped with oil collars and trash racks, will be installed at the outlets of the Premium 78 River, Pine Brook, and East Creek. Appropriate participation by Westchester County agencies in this project will be sought. 6. Catch Basin Cleaning and Improvement Throughout the Town and Village, catch basins collect sand, silt and other debris carried by storm water. Unless catch basins are adequate in size and design and are cleaned frequently enough, they cannot function properly to prevent these solids from being carried through the storm drainage system into Long Island Sound and its inlets and marshes. The cleaning and maintenance program of this important "first line of defense" against siltation and pollution will be upgraded to a semi-annual schedule and moni- tored regularly; detailed records of this work will be kept; and, where necessary, more adequate catch basins will be installed. 7. Elimination of Storm Drain-Sanitary Sewer Connections As noted in Section II and under Policy 33, the widespread illegal connection of storm water drains to the sanitary sewer system is a major cause of the discharge of raw sewage into streets, basements and coastal waters. Policy 33A calls for elimination of such connections, and some initial steps for this purpose have been taken. Accordingly, the two municipal govern- ments, in cooperation with the County Department of Environmental Facilities, will carry out a program to eliminate all storm drain connections to sanitary sewers now existing within their munici- pal boundaries. The program will be based on the Sewer System Evaluation Study recently completed by Westchester County for the New Rochelle Sewer District, in which illegal connections in the area were located. Private owners will be encouraged to comply in a timely manner by appropriate incentives and penalties, and maximum local involvement of property owners will be sought through an energetic campaign of public education on the necessity of this program for public health and well-being. Full advantage will be taken of Federal financial assistance available for this project. 8. Repair of Defective Sewer Lines As indicated in Section II, broken or defective sanitary sewers are a significant factor in the sewage pollution problem. Repair of these defects should have high priority. In particular, (a) the outfall pipe at Cedar Island should be repaired and extended, and maintained until the need for it has been eliminated by the actions called for in paragraph g. above; and (b) the sewer line crossing Little Harbor Sound from the Hommocks Peninsula should be investigated and, if it is still active, any necessary repairs made to avoid pollution of the marsh. 79 9. Selective Harbor Dredging Periodic dredging is essential to a major objective of Policy 21, namely, to prevent physical deterioration of facilities for recreational boating. There has been no public dredging in Larchmont Harbor in recent years. Property owners in Little Harbor Sound sponsored dredging of that area in 1979; however, the channel has already silted in above its previous level. Dredging for navigational purposes has also been conducted from time to time in Horseshoe Harbor by the Manor Park Society. Projects 1 through 6 above will in time reduce, but cannot eliminate, the siltation that necessitates continued maintenance dredging. A "Feasibility Study of a Cooperative Harbor Mainte- nance Program," recently prepared for Westchester County, projects dredging needs for the five Sound shore communities and proposes several alternatives for joint inter-municipal/County harbor maintenance management. The estimate of annual maintenance dredging required for Larchmont Harbor, as projected by that study, is 23,600 cubic yards -- about a third of the total estimated non-federal dredging requirements for the five communities. Efficiency and economy of scale would be best served by this community's participation in such a program, operated by a joint harbor management agency. Accordingly, the two municipal govern- ments will encourage the County to adopt a joint program such as is recommended in the study cited above, and will plan to partic- ipate in the program. In order to mitigate adverse effects, dredging will conform to all state and federal procedures; dredge spoil will be disposed of only in designated areas; and dredging activities will be coordinated with adjacent communities and with Westchester County wherever possible. 10. Flint Park: Restoration of two Deteriorated Sites Section IV-A-3-b above refers to the need for corrective physical action in two places on public waterfront property in order to protect vulnerable wetlands and wildlife habitats. These are: a. The open stretch of East Creek between the Post Road and the north end of Flint Park. This small area has been subjected to pollution for many years from adjacent commercial enter- prises along the Post Road. It is also chronically lit- tered. It should be made into a nature preserve and passive recreational area, and physical and administrative measures taken to stop pollution and littering. This will require such measures as fencing and visual screening; constructing 80. barriers to, and closing off any conduits for, polluted runoff now entering the creek; and stabilization of the creek banks against erosion. b. The area at the south end of Flint Park now used as the Village of Larchmont leaf disposal facility. As soon as alternative arrangements are found for the Village's leaf disposal, as called for under Policies 20 and 39, this scenic and ecologically sensitive location adjoining the Hommocks Marsh can be adapted for conservation and passive recreation. Accordingly, the Village will make a priority effort to find alternative means of leaf disposal and, that being done, will clear the site of waste materials now accumulated there and restore and adapt it for the purposes here stated. 11. Premium Conservation Area Restoration Pursuant to Policies 7/7A and 21, the Town government under the coordination of the Conservation Advisory Commission and in cooperation with concerned neighborhood groups, will develop a program for restoration and maintenance of the Premium Conserva- tion Area as a wildlife habitat and, to the extent consistent with that function, as a facility for passive recreation. This project, designed to reverse the deterioration of this area noted in Section II, part 6, will include rebuilding and improvement of the catwalk and measures to correct and discourage littering and chemical or biological pollution. 81 Table 1 Data on Physical Projects in Section IV-B Preliminary Cost Related Project Estimate* Policies 1. Premium Feasibility $ 25,000 7/7A, 9, 12, 14, Study 44, 44a 2. Upper Sheldrake/Larchmont $ 15,000 7/7A, 13, 14, 17 Reservoir Feasibility Study 3. Upper Sheldrake River $900,000 13, 14, 16 (West Branch) Improvements 4. Upper Sheldrake River $ 30,000 13, 14, 16 (East Branch) Retention Basin 5. Large Silt Traps $ 40,000 7/7A, 8, 10A, 30, 30, 32A, 33, 44, 44A 6. Catch Basin Cleaning and Annual: to be 7/7A, 8, 12A, 33, 44, Improvement Program be supplied 44A 7. Elimination of Storm Drain Village: $215,000 7/7A, 10A, 30, 33, 33A, Connections to Sanitary Town: to be 44, 44A Sewer System supplied 8. Repair of Defective Sewer to be supplied 7/7A, 10A, 30, 32A, Lines 33, 44, 44A 9. Selective Harbor Dredging $230,000 15, 35 per year 10. Restoration of two Flint to be supplied 7/7A, 9, 19, 20, 21, 30, Park Sites 33, 39, 44, 44A 11. Premium Conservation Area to be supplied 7/7A, 8, 19, 20, 21, Restoration 30, 44, 44A *Costs to be shared as appropriate in each case among the public and private agencies and persons involved. 82 Project Timetable Year Action (see above) 11.".111. 2 3 4 5 1. Premium River Study and Improve. •mi- ---miiimmemmismiom-- 2. Larchmont Res. Study and Improve.m.1111.1.114L mommor..............mi 3. Sheldrake (W. Branch) Improve. issimim,misiiimmiNsU1UI....1.1U1M11111 4. Sheldrake (E. Branch) Improve. 5. Large Silt Traps 6. Repair Defective Sewers imasimimiamiEMI •11111.11111111MIIIIIMINs 7. Harbor Dredging* milIommmr##IUIUIem simmomrms411, 8. Catch Basin Cleaning* nMI MMEMMOMMEMEMMOMMEIrEMOMMEMMEMME� 9. 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"Af F!R' ,,, 9 q + � 'R i pjq ' ,`y .�, ft V5' 3.. f'" ' ''i , t'ro , i., ..��.a r Yr 1.1'11', Yp f b f0' r • Aa 7 1+ ry * .. -4.11104,4111• 11 _ vim., ; r4 6 '1'''.1;,%''''''" k 3 b6.4 l.- — .1,- _ t 4- •IN'"",Alm'! • VILLAGE TOWN OF OF LARCHMONT MAMARONECK The preparation of this report was financially aided through a federal grant from the Office of '' ;t Ocean and Coastal Resource Management, ' q-` National Oceanic and Atmospheric Admin- •w istration under the Coastal Zone Management --'� Act of 1972, as amended. This report was fi ? 77-7. r ti i .»�_ Y prepared for the New York Department of t.:5a '�: , ..__ �, State. -7 z � , �,,,- ,,• s 4 { ' I �Y*y, a•t Y 'r .1 n ti. Y 466 B,, •msJ-24•••-`110: r 8r' 'A Ls !nV fa•y,'tf / ��� 1t` 4.'70 f . � 1 + � fi`g' � o , ,. 'es . r. -•` i ,f - 4 SECTION V `� .{ ` TECHNIQUES FOR * u �i z x , ,:y ti LOCAL `,' , f- 3.., y `�\f 7 z IMPLEMENTATION SECTION V: TECHNIQUES FOR LOCAL IMPLEMENTATION OF THE PROGRAM This section specifies the local techniques or means -- legal, administrative, managerial, and financial -- by which the LWRP is to be carried out. Part A describes legislative means, including existing local laws and regu- lations as well as proposed new legislation, in both municipalities. Part B lists planned implementing actions other than legislative. For each item listed in Parts A and B, an explanation is given of its application to particular policies, land uses or projects in Sections III and IV. Part C outlines a proposed management structure to oversee and coordinate the implementation of the Program under the joint authority of the two municipal governments. Part D discusses the financial resources that will be provided locally or sought elsewhere to implement the projects in Section IV-B and the other actions with financial implications listed in the present section, including the costs of management. Part E summarizes in chart form the relation between implementing actions in Parts A and B and the policies in Section III. A. Local Laws and Regulations 1. Existing laws and regulations5 a. Zoning laws Town law, Chapter 89, establishes land use and density controls in specified zones in accordance with a comprehensive plan to guide the growth and development of the Unincorporated Area, and prescribes rules and procedures regarding nonconforming uses, variances, appeals, etc. Village Code (p. 349-71) establishes comparable zoning patterns and procedures for the Village. Application: Essential to land use controls in Section IV-A and to the policies to which they relate regarding flood control, protection of habitats and wetlands, scenic values, especially 7/7A, 11, 14, 25, 44, 44A. 5In addition to laws and regulations listed, note should be taken of the Comprehensive Master Plans written for the Village and the Unincorporated Area in 1966 and reviewed in 1976. Among subjects in this document relevant to the LWRP are open space and recreation areas. The plans have never been adopted formally by either municipal government, but recommendations in them have been drawn on in decisions on land use, parking, traffic, etc. In 1984 a joint Town-Village committee was formed to review the Master Plans (Footnote Continued) 84 b. Subdivision regulations • Town and Village regulations for approval of subdivision plats, issued by Planning Boards, require developers to (among other things) provide for drainage, water, sewerage, traffic, parks and playgrounds. Application: Same as for zoning laws (item a above) . c. Site plan- approval Town (Local Law No. 3, 1984) requires that a plan for any proposed development and use of land be submitted to the Planning Board demonstrating that such action is consistent with standards of traffic, parking, screening and landscaping, environmental quality, drainage and sewage disposal, as set forth in the law, and is in harmonious relationship with adjacent uses. Village Code (p. 221-227) requires applicants for building permits to submit detailed site plans to the Planning Commission, and sets criteria for approval including drainage, preservation of natural features, screening and landscaping, etc. Application: Same as for zoning laws (item a above) . d. State Environmental Quality Review (SEQR) Laws • Town Local Law, No. 4, 1985, provides for environmental quality review, under procedures laid down in the State SEQR law, of actions that may significantly affect the environment. (Repeals and replaces original local SEQR law of 1977) . Village Code (p. 101-114) has comparable SEQR provisions, and is in process of being revised and updated. Application: Basic guidance for processing permit applications for projects that could produce runoff, siltation, pollution, etc. damaging to natural or built environment. (Policies 7/7A, 11, 14, 18, 30, 44, 44A, among others.) e. Freshwater Wetlands Laws Town Law, Chapter 88, declares wetlands, rainfall drainage systems, and ponds, lakes, and reservoirs, as well as adjacent lands at specified distances or levels, to be "controlled areas" in which certain types of actions are prohibited (debris, (Footnote Continued) and consider means of bringing them up to date to deal with current conditions. • 85 chemical wastes, etc.) and others are regulated by permit (building, excavation, diversion of flow, etc. ) . This law is in process of revision in light of recent amendments to State freshwater wetlands law. Village Code (p. 139-146) , which is substantially the same, is also in process of revision. Both laws are administered by a Joint Water Control Commission which meets together with the Conservation Advisory Commission. Application: Policies 7/7A, 13, 14, 44, 44A. f. Conservation Area Regulations Town Law, Chapters 16 and 17, creates a Conservation Advisory Commission (on which the Town and both Villages are represented) ; designates certain Conservation Areas under the Commission's supervision, and directs that these be maintained in their natural state. Application: Conservation areas are important for wildlife (Policy 7/7A) , flood control (Policy 14) , passive recreation (Policies 19, 20, 21) and scenic quality (Policy 25) . g. Flood Damage Prevention Laws Village Law No. 2, 1984, sets building standards and permit and appeal procedures for building in areas of special flood hazard as shown on Federal flood insurance rate map of 1984 for the Village of Larchmont. Flood hazard areas shown on the map are those subject to coastal and tidal, not upstream, flooding. New structures in mapped areas must meet standards to qualify for Federal flood insurance at regular rates. Town Law, Chapter 28, provides for controlling the alteration of natural floodplains, streams, channels, and natural protective barriers, which help or accommodate channel floodwaters; prevents or regulates the construction of flood barriers which will unnaturally direct floodwaters or which may increase flood hazards in other areas; designates special areas of flood hazard within which are located two floodway areas (extremely hazardous areas due to velocity of flood waters which carry debris) , and prohibits any encroachment that results in any increase in flood levels during times of flood discharge. Application: Policy 11. h. Architectural Review Town zoning law, Chapter 89, requires application to the Town Board for special use permits to change architectural design or 86 landscaping in specified respects. (See also subparagraph c above.) Village Code (p. 7 to 10) , creates a Board of Architectural Review with power to deny permits for building or alteration that would, if granted, result in monotonous similarity, visual offensiveness or discord, or impair enjoyment or value of proper- ty. Application: Scenic values (Policy 25) . i. Protection of Trees. Town Law No. 10, 1985, prohibits destruction of any tree above specified size without a permit; creates a Tree Preservation Commission with power to grant permits under specified criteria and procedures. Application: Policies 7/7A, 14, 14A, 25. j . Satellite Earth Stations Village Law No. 7, 1984, sets standards for size, position, color, etc. of satellite earth stations (dish antennae) and requires special permit for such devices exceeding 18" diameter. Purpose is to prevent eyesores. Town zoning ordinance limits on size and height of structures can apply to dish antennas. Application: Policy 25. k. Signs Town Law, Chapter 14, Article XIX (building code) regulates appearance of signs and makes them subject to approval of build- ing inspector. Chapter 3 prohibits posting of bills, placards, etc. on public property. Village Code (p. 211-220) regulates appearance of signs in business district and, with minor exceptions, forbids all signs in residential areas. Application: Same as preceding. 1. Noise Town Law, Chapter 51, prohibits noise that menaces health or disturbs peace and quiet, such as amplification systems, steam whistles and horns. Village Code (p. 159-160) sets noise emission standards (in decibels at property line) , with stricter night-time standards. Limits use of loudspeakers. Village Law No. 3, 1985, sets noise 87 standards for gardening machinery, previously exempt. Village Code (p. 149) on Harbor requires mufflers on motorboats. Application: Policy 25A. m. Litter Town Law, Chapter 30, prohibits littering on public property and on private property adjacent to public places. Village Code (p. 155) makes similar provision. Application: Policy 39A. n. Dog Waste Town Law, Chapter 6, Article II, requires dog-walkers to immedi- ately remove feces and forbids putting feces in storm drains. Village Law No. 5, 1981 is similar. Application: Policy 39A. o. Parks Town Law, Chapter 55, prohibits littering or inflicting harm on wildlife, birds or plants in Town parks. Application: Policies 7/7A, 25, 39A. p. Larchmont Reservoir Village Law No. 4, 1984, dedicates in perpetuity the Larchmont Reservoir property to public uses as conservation area, wildlife, preserve, nature study area, reservoir, standby water supply, flood control, education area, and other compatible uses. Application: Policies 7/7A, 14, 19, 21, 38, 44, 44A. q. Sewers Town Law, Chapter 60 (Plumbing Code) : Article VIII requires that liquid wastes from any plumbing system be discharged into public sewers; Article XII prohibits any connection with any storm water drain or with any stream or watercourse within the Town for the removal of sewage from any premises; and prohibits surface water from the ground, or from the cellar or roof of any building, to enter any pipe or drain that discharges into any fixture or trap connected with the public sewer; and Article XIV mandates that such drainage shall be discharged into a storm drain. 88 Village Code (p. 206) forbids connection of roof leaders, water drainage pipes or storm water drains to the sanitary sewer system and requires that those so connected shall be disconnected and drainage rearranged as directed by the Village Engineer. Application: Policy 33A. 2. Proposed New Legislation a. Local consistency and management structure for LWRP Town and Village both to enact laws (1) requiring that all municipal bodies including departments, boards, commissions, and all joint Town-Village bodies, shall act consistently with the policies in this Program; and (2) creating a management structure (see Part C below) to coordinate and oversee implementation of the Program. Application: Entire LWRP. b. -Amendments for stormwater control and open space preservation Town and Village to amend zoning ordinances and/or development regulations in accord with paragraph 3-b of Policy 14 to control stormwater runoff rates in developments exceeding 10,000 sq.ft. Town, in addition, to enact land use provisions of Section IV-A-1, "Substantial Areas of Open Space," to reduce stormwater runoff rates and preserve open space in any development in specified areas. Application: Policies 14 and 25. c. Waterfront zoning Village and Town to amend R-30 zoning provisions in accord with Section IV-A-3, subparagraph a. , in order to preserve the scenic low-density character of the Larchmont shoreline. Application: Policy 25. d. Wetlands and habitats Town and Village (1) to amend their Freshwater Wetlands Laws to conform with, and give effect to, current New York State law on this subject (Article 24 of the Environmental Conservation Law) ; (2) to designate the Premium Salt Marsh Complex, the Hommocks Salt Marsh Complex, and the Larchmont Reservoir- Leatherstocking Freshwater Wetland Complex as Fish and Wildlife Habitats pursuant to Policy 7/7A, and (3) to declare the same areas to be Critical Environmental Areas (CEAs) . Town, in addition, to incorporate in 89 its Freshwater Wetlands Law a map delineating the controlled areas, as provided in Section IV-A-1 above. Application: Policies 7/7A, 14, 44, 44A. e. Erosion and sediment control Town and Village to enact an Erosion and Sediment Control Law incorporating Westchester County recommended "Best Management Practices" guidelines for construction-related activities and for stormwater management. Application: Policies 7/7A, 10A, 13, 14, 14A, 17, 30, 33, 37, 44, 44A. f. Elimination of storm drain-sanitary sewer connections Town and Village to enact such legislation as may be necessary to implement Policy 33A calling for expeditious removal of con- nections carrying stormwater runoff into sanitary sewers. Application: Directly to Policy 33A; indirectly to Policies 7/7A, 8, 10A, 30, 31, 37, 44, 44A. g. Historic sites Town and Village to enact appropriate legislation implementing Policy 23 by designating specific historic sites and districts, providing for their protection and/or appropriate restoration, adaptive re-use or rehabilitation, and establishing criteria and procedures for further such designations by local and/or State authority. Application: Policy 23. B. Other Actions 1. Use of Post Road sites. Village, in any land use decisions on Post Road sites adjoining Premium (Section IV-A-2) to apply conditions and procedures in light of applicable LWRP policies. Application: Policies 7/7A, 14, 14A, 17, 44, 44A. 2. Intermunicipal watershed cooperation. Town and Village to initiate and participate in intermunicipal mechanisms for better control of flooding, erosion, and siltation through coordinated planning and management of shared watersheds, and work with the County Soil and Water Conservation District and other concerned agencies to that end. Application: Directly to Policies 14 and 14A; indirectly to Policies 5, 7/7A, 44, 44A. 90 3. Intermunicipal and County cooperation against pollution. Town and Village to initiate and participate in cooperative efforts with neighboring municipalities and concerned County agencies to control chemical and organic pollution affecting this coastal zone, including timely repair of County sewers and construction of adequate sound shore sewage treatment facilities. Application: Policies 7/7A, 8, 10A, 14A, 30, 31, 33, 33A, 36, 37, 44, 44A. 4. Pollution monitoring and control. Town and Village to develop, with County agencies, a systematic program to inspect, monitor, and report on water quality and pollution sources and incidents; improve compli- ance with regulations including safe disposal and/or recycling of polluting wastes; and apply pollution guidelines set forth in County Best Management Practices Manuals on Construction-Related Projects and Stormwater Management. Application: Same as preceding. 5. Litter and dog waste. Town and Village to study effective approaches to control of these nuisances with a view to new legislative, adminis- trative, and/or community action. Application: Policy 39A. 6. Scenic protection. Town and Village to enhance protection of scenic values by applying the siting and development guidelines in Policy 25. Application: Policy 25. 7. Recreational fishing. Town and Village to review their laws and policies regarding recreational fishing with a view to encouraging such fishing under suitable regulation in appropriate locations such as the Premium Mill Pond and the Larchmont Reservoir. Application: Policy 9. 8. Coastal Erosion Hazard Areas, High Hazard Areas, Etc. Town and Village to apply State coastal erosion hazard standards to three areas named under Policy 11 and to apply applicable State standards to siting of structures in coastal high hazard areas ("V zones") and floodways so identified on Flood Insurance Rate maps. Application: Policies 11, 17. 9. Recreational facilities. Town and Village to take such steps regard- ing land use as may be appropriate to prevent reduction of existing waterfront recreational facilities or of access thereto. Application: Policies, 2, 11, 12, 19, 21, 25; Section IV-A-3-a-2. 91 10. Noise abatement. Town and Village to increase local efforts to lessen locally generated noise pollution, and renew efforts to obtain coop- eration of higher levels of government to reduce aircraft and vehicle noise. Application: Policy 25A. 11. On-site sanitary systems. Town and Village to require (a) replacement of on-site sanitary systems by connection to public sewers wherever possible without unreasonable cost; otherwise, (b) use of the most effective and pollution-free on-site system, with post-installation monitoring by municipal authorities to assure performance. Application: Policies 32, 32A. 12. Vessel waste discharges. Town and Village to keep the problem of waste discharges from vessels in coastal waters under continuing review and take any necessary steps to assure compliance with applicable laws and regulations. Application: Policy 34. 13. Pollution from nutrients, etc. Town and Village to follow best management practices on municipal projects to greatest practicable extent, and encourage property owners to do likewise, in order to minimize pollution of coastal waters by runoff of excess nutrients, organics, and eroded soils. Application: Policy 37. 14. Standby water supply. Village of Larchmont to frame and enforce rules, and seek necessary cooperation of upstream municipalities and County government, in order to maintain Sheldrake Lake water quality classification "A" required for standby water supply. Application: Policy 38. 15. Illegal dumping. Town and Village to upgrade enforcement of laws forbidding dumping on or near public property. Application: Policy 39. C. Management Structure to Implement the LWRP Design of an effective management structure for the implementation of this Program must take into account its bi-municipal character, as well as the fact that no existing municipal or intermunicipal body in this area has overall responsibility for the wide range of activities covered by the policies in Section III and the actions in Sections IV and V. Physical operations affecting the Coastal Zone are dealt with primarily by the municipal engineers and public works departments of the two municipalities, supported by various committees responsible for recreation, parks and 92 trees, beautification, etc. Land use and related functions are primarily the responsibility of the two municipalities' respective Planning Boards and Zoning Boards, each functioning within its own municipal boundaries. The conservation areas, water quality monitoring, and protection of the freshwater wetlands are the responsibility of the Townwide Conservation Advisory Commission and Water Control Commission, assisted by the Town _Conservation Department. All these bodies, as their duties require, work in cooperation with local nongovernmental groups (see list in Section II) and with the local schools. Since no part of this pattern fitted the unique requirements of LWRP planning, a Coastal Zone Management Committee (CZMC) was created by the Village of Larchmont in September 1982 to undertake the drafting of an LWRP under a State planning grant. Soon after, the Town of Mamaroneck also received an LWRP planning grant. Recognizing the extensive interdependence of the two areas, the Town and the Village thereupon began working togeth- er. The Town Council appointed several Town residents to the CZMC, includ- ing a co-chairman. Under the authority of both municipal governments, the CZMC undertook to draft a single LWRP for the Village of Larchmont and the Unincorporated Area of the Town. In its drafting work the Committee and its planning consultant have con- ferred with many of the bodies mentioned above. Moreover, its membership includes chairmen or members of a number of them, notably the Village Planning Commission and Zoning Board and the Conservation Advisory Commission. Thus the CZMC has developed a unique overview of the problems and possibilities facing the two municipalities in their shared coastal zone. This overview function is extremely important and is provided for in the implementation phase in order to facilitate coordination between two neighboring munici- palities working together in a single Program. 1. Lead Agency and Responsible Official To serve as lead agency, the municipal governments will jointly establish upon the entry into force of the Program a Coastal Zone Management Commission of 10 members. The Chairman of the Commission will be designated as the local official responsible for overall management and coordination of the LWRP. Simultaneously with the establishment of the Commission, the present Coastal Zone Management Committee, a planning body, will be dissolved. To assure timely and coordinated implementation of the Program at the local government level, the two municipal governments will coordinate their policies and actions as necessary, taking into account the advice and recommendations of the Commission. For this purpose each municipal government will appoint a liaison trustee or council member to work with the Commission. The liaison members will serve as channels for guidance to the commission from their respective govern- ments. They will consult as appropriate with each other, and with their respective governments, on the work of the Commission, the implementation of the Program, and any questions arising in that 93 connection that may require action by or guidance from one or both governments or coordination between the two governments. 2. Coastal Zone Management Commission The Commission will be constituted as follows: a. Appointment. Five members will be appointed by the Village of Larchmont and five by the Town of Mamaroneck. Members will be appointed for a term of three years and will be eligible for reappointment; except that at the outset three members will be appointed for a term of three years, four for a term of two years, and three for a term of one year. b. Qualifications. Each member serving on appointment by the Village must be a resident of the Village, and each member serving on appointment by the Town must be a resident of the Unincorporated Area of the Town. Members will be chosen for their demonstrated knowledge, ability, and readiness to serve the Commission in the functions described below, and with due regard to maintaining among the membership a range of special aptitudes and expertise relevant to the Commission's work. c. Functions and powers. The Commission's basic task will be to monitor and coordinate the implementation of the LWRP, its policies and projects, including physical, legislative, regulato- ry, administrative, and other actions included in the Program. In pursuance of this task the Commission will: (1) Advise the municipal governments on implementation pri- orities, work assignments, timetables, and budgetary re- quirements of the Program. (2) Consult with the appropriate departments and professional staffs of the two municipalities concerning the matters in subparagraph (1) , obtaining reports from them as necessary to assure implementation of the Program and consistency of local actions with it. (3) Maintain liaison with related municipal bodies, including but not limited to the Planning and Zoning Boards and the Conservation Advisory Commission, and with concerned nongov- ernmental bodies, in order to further the implementation of the LWRP. (4) Monitor in timely fashion the planned actions of State and Federal agencies within the Coastal Zone in order to assure consistency of such actions with the LWRP, and recommend remedial action where necessary. (5) Provide to any board, commission, or other agency of the Town or Village (including, but not limited to, the Planning Board or Planning Commission and the Zoning Board of Appeals) , in such manner as may be prescribed by law, its opinion as to whether, and in what respect, a proposed action by, or subject to the permission of, such body, may be inconsistent with the policies of the LWRP. 94 (6) Subject to the approval of the municipal governments, make application for funding from State, Federal, or other sources to finance projects under the LWRP. (7) Develop and maintain liaison with neighboring municipal- ities, and with State and the County agencies concerned, with a view to strengthening and developing cooperation in, and common management of, shared drainage basins for flood and pollution control and other purposes. (8) Make an annual report to the municipal governments on progress achieved and problems encountered during the year, and recommending such actions as the Commission considers necessary for the further implementation of the LWRP. (9) Make or prepare such reports and communications concerning the Program to the Department of State and other agencies of the State of New York, by or on behalf of the municipal governments, as may be appropriate or required. ( 10) Perform such other functions regarding the Coastal Zone as the Village Board and the Town Board may assign to it from time to time. d. Other provisions (1) Members of the CZMC will serve without compensation. They will be entitled to reimbursement for necessary expenditures in the performance of their work, subject to budgetary limitations. (2) The Commission may engage such professional and clerical help and purchase such supplies and services as are neces- sary for its work, subject to prior budgetary approval by the two municipalities as the latter may direct. (3) The Commission will meet not less than once a month. Its meetings will be open to the public. It will keep and distribute minutes of its proceedings. A majority of its members will constitute a quorum. e. Limitation. Notwithstanding any other provision of this Program, no powers, duties, or functions are conferred by it on the Coastal Zone Management Commission other than those set forth in paragraphs c. and d. above; and no provision of this Program shall be construed as altering the powers, duties, and functions of the existing municipal planning and zoning boards or com- missions of the Village of Larchmont or the Town of Mamaroneck. 95 3. Summary of assignment of specific responsibilities for implementation and management of the LWRP Initiating or enacting authorities, and principal operating officials or agencies, are provisionally indicated in the table below for (a) physical actions, (b) new legislation, and (c) other actions. 96 Authority or Agency* with primary responsibility for Initiating Action or Enacting Operating (a) Physical Projects (See Section IV-B) 1. Premium Feasibility Study CZM CZM 2. Upper Sheldrake/Larchmont Reservoir Feasibility Study CZM CZM 3. Upper Sheldrake River (West Branch) Improvements TB TE/TPW 4. Upper Sheldrake River (East Branch) Retention Basin TB TE/TPW 5. Large Silt Traps VB/TB VE/VPW/TE/TPW 6. Repair of Defective Sewer Lines TB/VB CSD/TE 7. Selective Harbor Dredging VB/TB JHM 8. Catch Basin Cleaning and Improvement Program VB/TB VPW/TPW 9. Elimination of Storm Drain Sanitary Sewer Connection TB/VB VE/CSD/VPW/TE/TPW 10.Flint Park: Relocation of Leaf Disposal Facility and Restoration of Two Sites VB CAC/VE 11.Premium Conservation Area Restoration CAC TPW (b) New Legislation (See Section V-A-2) 1. Local consistency laws TB/VB CZM and all agencies 2. Substantial areas of open space TB TPB/WCC 3. Waterfront zoning TB/VB TPB/VPC 4. Wetlands and habitats TB/VB TPB/VPC, WCC 5. Erosion and sediment control (Best Management Practices) TB/VB TPB/VPC, CAC 6. Elimination of storm drain-sanitary sewer TB/VB TE/TPW/VE/VPW 7. Historic sites VB/TB VBAR, TEAR (c) Other Actions (See Section V-B) 97 1. Use of Post Road sites VB VPB/CAC 2. Intermunicipal drainage basin cooperation TB/VB CZM 3. Intermunicipal-County cooperation against pollution TB/VB CZM/WCC 4. Pollution monitoring and control CZM CAC/WCC 5. Litter and dog waste CZM CZM 6. Vessel waste discharges VB CZM/CAC 7. Scenic protection VB/TB VPB/TPB 8. Recreational fishing TB/VB CAC 9. Coastal Erosion Hazard Areas CZM CZM 10.Recreational facilities TB/VB -- 11.Noise abatement CZM TE/VE 12.0n-site sanitary systems TB/VB TE/VE 13.Pollution from nutrients,etc. TB/VB TPW/VPW 14.Standby water supply VB CAC/TE 15.Illegal dumping TB/VB CZM *Key to abbreviations: CAC - Conservation Advisory Commission • CSD - County Sewer District CZM - Coastal Zone Management Commission JHM - Joint Harbor Management Agency TB - Town of Mamaroneck Board TEAR - Town Board of Architectural Review TE - Town Engineer TPB - Town Planning Board TPW - Town Public Works Dept. VB - Village of Larchmont Board VBAR - Village Board of Architectural Review VE - Village Engineer VPC - Village Planning Commission VPW - Village Public Works Dept. WCC - Water Control Commission 3. Description of procedures to be used to ensure that all local actions comply with the policies of the LWRP As lead agency, the Coastal Zone Management Commission will be 98 primarily responsible for ensuring compliance with and implementation of LWRP policies. It will inform all agencies, boards, commissions, and officials of the two municipalities, as well as relevant nongovernmental organizations, whose work may be affected by the LWRP policies, concerning the requirements of the policies affecting them; and it will confer with them to determine what new actions, if any, are necessary in order to assure fulfillment of such requirements. Problems or questions that arise from these discussions will be referred as appropriate to the Town or Village government for decision or action. 4. Description of procedures to be used for review of Federal and State actions for consistency with the LWRP For State agencies' consistency with the LWRP, the municipalities will rely primarily on the consistency procedures laid down on page 14-16 of "Guidelines for Local Waterfront Revitalization Programs" (Depart- ment of State, Albany, October 1982) ; The Coastal Zone Management Commission will evaluate promptly all proposed State actions of which it receives notice, and will give timely notice to the Secretary of State of any potential conflicts between such actions and the LWRP. For Federal agencies' consistency with the LWRP, the municipalities will rely primarily on the principles and procedures described in "State of new York Coastal Management Program and Final Environmental Impact Statement," U.S. Department of Commerce, August 1982, pages II-9-11 and 12, in which the Department of State, State of New York, declares that it "will consult with other State agencies and local governments before providing its official comment on all Federal actions and that the basis for all consistency review will specifical- ly include "local waterfront revitalization programs." The Coastal Zone Management Commission, on being informed by the Department of State of any Federal action likely to affect the LWRP, will promptly evaluate and comment on the likely effect of such action. In this connection, note is taken of the provision of Department of State Regulation 600.4, regarding initial review of actions by State agencies under Article 42 of the Executive Law, that "for purposes of this part, planning or rulemaking actions which affect land or water in the coastal area shall be deemed to be located therein." (Emphasis added.) Because of the topography of the Westchester Sound shore, actions inland and upstream, beyond the coastal area of the two municipalities, can seriously affect land and water in this coastal area. Consequently, such proposed actions by State or Federal agencies, when likely to produce such an effect, should be made known to the Coastal Zone Management Commission in a timely fashion for its evaluation and comment. D. Financial Resources Necessary to Implement the LWRP Although preliminary cost estimates have been made for some of the physical 99 projects listed in Section IV-B (see Table 1) , no overall estimate of annual budgetary requirements for the LWRP is possible at this stage. Costs beyond the first year will depend in part on the outcome of the proposed Premium and Sheldrake feasibility studies. Except for a few proposed actions in which private persons or organizations have a particular interest or responsibility and may bear a share of the cost, the program here proposed is in the public sector entirely and will be financed from public funds. Management costs and the costs of some actions can be absorbed in the regular budgets of the two municipalities and financed out of general revenues. Other actions, however, will qualify for, and require, financial support under State or Federal programs. Some potential sources of such support are listed in Section VI-B, "Federal and State Actions Necessary to Further the LWRP." The municipal governments, with the advice of the Coastal Zone Management Commission, will pursue all possible avenues of such support and, in this connection, will avail themselves of the advice and assistance of the Coastal Management Staff of the Department of State. E. Summary Chart of Actions Implementing Policies In Sections IV and V, discussions of projects, laws, and other actions are accompanied in each case by reference to the Policies which they chiefly serve to implement. The chart below presents this information in matrix form so that the most significant implementing actions for each of the Policies included in the LWRP can be readily identified. References to background discussion in Section II relevant to each Policy are also included. 100 LWRP POLICIES: BACKGROUND AND IMPLEMENTING ACTIONS Policy # Subject Sec. II* (Background) Sec. IV* Actions Sec. V* Laws, Actions 2 Water-dependent uses Part 2, 3b,c,i A-3-a-2 B-10 5 Locating Development: Part 2 (physical A-1 B-2 infrastructure con- geography, economy); straints (see also 3-g; 11 Policy 14) 6 Expedite permit - - - procedures 7/7A Fish and wildlife Part 3-f; Part 4 A-1,2,3a,3b,4; A-1(a,b,c,d,e,f,i,o,p) habitats and Appendix A B-1,2,10,11 A-2 (d,e,f); B-1,2,3,4 8 Protect fish and wild- Parts 4,5,6,8,12 A-1,2,3;B-1,2,5, A-1 (e,f,l,n,o); A-2-d, life from pollutants 6,7,8,10,11 f; B-3,4,5 9 Recreational use of fish Part 3-c-1; Part 13 A-3-b; B-2,10,11 B-8 and wildlife 10A Shellfish (water quality) See Policy 30 11 Flooding and erosion: Parts 6,8,9 A-1,A-2,A-3-a-2, A-1 (a,b,c,d,g); A-2-a,b Siting of structures A-3-b B-8,9 12 Development must not Part 3-g; Parts 6 A-1,2,3-a-2 A-1 (c,d,g,p); A-2 b,e; harm natural protective through 9 B-2, 10 features 13 Criteria for erosion Parts 6,7,8,9 B-1,2,3 A-1-g (Town); A-2-e protection structures 14** Actions must not in- Parts 2,3-g,5-8,11 A-1,2,4 A-1 (a,b,c,d,e,f,i,p); crease erosion or flood- B-1,2 A-2 (b,d,e); B-1,2 ing at site or elsewhere 14A "Best management" in Part 5 - A-1-i,A-2-e, B-1,2,3,4 construction 15 Avoid damage in dredging See Policy 13,35 17 Prefer non-structural - A-1,2,3 A-1 (c,d,g); A-2 (b,e); measures against flooding B-1 thru 6; 9 B-1,9 18 Safeguard NY State - Part B A-1-d interests 19 Access to water-related 2-d,3-c,13 A-3; a(2) ,b B-10 recreation A-4;B-9,10,11 101 • 20 Access to publicly owned 2-d,3-c-2,13 A-3-b;B-10,11 B-7,9 shore 21 Priority for water-re- 3-c,13 A-3-b; B-9,10,11 B-7,9 lated recreation 23 Protect historic 3-d,14 - A-2-g resources 25 Protect scenic resources 3-e,14 A-3-a (1) A-1-a,b,c,h,i,j,k; A-2-b,c;B-6,9 25A Noise abatement 12-b - A-1-i; B-10 30 Standards governing 3-c,e;4,5,6,8,10, B-5,7,8 A-1(e,m,n,q,p);A-2-e,f; pollutants in coastal 11, 12-a,b B-3,4 waters (see Policies 7/7A,8,9,10A,44,44A) 31 State water quality 3-c,h; 10 B-1,2,5,7,8 A-1-p,q; A-2-f; B-3,4 standards 32 Permitted use of "alter- 10-f - B-11 native" sanitary waste systems 32A Eliminate and replace See Policy 32 such systems wherever feasible 33 Means of controlling Parts 5 to 11 B-5,6,8,9,10 A-1-q,B-11 runoff and sewer overflows 33A Eliminate stormwater 10-a B-7 A-2-f connections to sanitary sewers 34 Vessel waste discharges 10-g - B-12 in coastal waters 35 Standards governing 9-a B-7 - coastal dredging 36 Spills of hazardous 12-a - B-3 materials 37 Pollution from nutrients, 12a - A-2-e,f;B-13 organics, soils 38 Protection of water 3-h(1) B-14 supply 102 39 Solid (including 12a B-10(b) B-15 hazardous) waste management 39A Control of litter and 12c - B-5 dog waste 44 Wetlands preservation 3(c,e,f,g,h);4; A-4;B-1 through A-1(a,b,c,d,e,f,m,n,q); See also Policy 7/7A 6(c,d);8 8; B-10,11 A-2-d; B-2,3,4,5, 13,15 44A Wetlands restoration See Policy 44 See also Policy 7/7A *References are to numbered or lettered subsections, paragraphs, etc., of the section named at head of column. **Coastal Zone Boundary definition in Section I is also especially important to this policy. • 103 _{--�� ,,� 4tt' r _ SPo� Y 4 1. .Y �,.• y ,¢fit"' '� y�g _ l' ii ,F4- .....11- ;;.r+ a - ''?' , , 1 ,4,`1,,, f k'{ t 3 --- ,x � r3i ,444. It 1Y A s / /Nd'st F r VILLAGE TOWN OF OF LARCHMONT MAMARONECK The preparation of this report was financially aided through a federal grant from the Office of "� Ocean and Coastal Resource Management, National Oceanic and Atmospheric Admin- '11/�i istration under the Coastal Zone Management Act of 1972, as amended. This report wasi. '�`= n A.i prepared for the New York Department of ��x State. �°.. '� ��'� v i ° 4. tom , rR•, ,�a� ;§ . it � ��t�` f� l a ;fit f , x4 SECTION VI -,.. FEDERAL i 5 P� a �^ sip- 1 -, #a � �' f tt 111 Alt ,-- S «q pit' ,,,1-\ I is i+. Ito AND STATE PROGRAMS SECTION VI FEDERAL AND STATE PROGRAMS LIKELY TO AFFECT IMPLEMENTATION This section has two parts. Part A, beginning below; lists all Federal and State programs whose actions are likely to affect the implementation of the LWRP, either at the outset or in the future. The purpose of this list is to assure that all agencies responsible for such programs are informed of the LWRP as soon as it is approved so that their actions will be consistent with it as required by law. Those programs preceded by the symbol (0) are further discussed in Part B. Part B, beginning on page 100. 14 lists those programs conducted by Federal and State agencies whose financial assistance or other actions will be neces- sary or helpful in implementing the LWRP. A. FEDERAL AND STATE ACTIONS AND PROGRAMS WHICH SHOULD BE UNDERTAKEN IN A MANNER CONSISTENT WITH THE LWRP. 1 . FEDERAL ACTIONS AND PROGRAMS a. Direct Federal Activities and Development Projects Department of Commerce, National Marine Fisheries Service: -- Fisheries Management Plans Department of Defense, Army Corps of Engineers: --• Proposed authorization for dredging, channel improvement, breakwaters, other. navigational works, erosion control structures, beach replenishment, dams or flood control works, ice management practices and activities, and other projects with the potential to impact coastallands and waters. - -- Land acquisition for spoil disposal or other purposes. —.Selection of open water disposal sites. General Services Administration: -- Acquisition, location and design of proposed Federal Government property or buildings, whether leased or owned by the Federal Government. -- Disposition of Federal surplus land and structures. Department of Transportation, Coast Guard: -- Location and design, construction or enlargement of Coast Guard stations, bases, and lighthouses. 104 -- Location, placement or removal of navigation devices which are not part of the routine operations under the Aids to Navigation Program (ATON) . -- Expansion, abandonment, designation or anchorages, lightering areas or shipping lanes and ice management. Department of Transportation, Amtrak, Conrail: -- Expansions, curtailments, new construction, upgradings or abandonments of railroad facilities or services, in or affecting the State's coastal area. Department of Transportation, Federal Highway Administration -- Highway construction b. Federal Licenses and Permits Department of Defense, Army Corps of Engineers: -- Construction of dams, dikes or ditches across navigable waters, or obstruction or alteration of navigable waters required under Section 9 and 10 of the Rivers and Harbors Act of 1899 (33 U.S.C. 401 , 403) . -- Establishment of harbor lines pursuant to Section 11 of the Rivers and Harbors Act of 1899 (33 U.S.C. 404, 405) . -- Occupation of seawall, bulkhead, jetty, dike, levee, wharf, pier, or other work built by the U.S. pursuant to Section 14 of the Rivers and Harbors Act of 1899 (33 U.S.C. 408) . —.Approval of plans for improvements made at private expense under USACE supervision pursuant to the Rivers and Harbors Act of 1902 (33 U.S.C. 565) . --•Disposal of dredged spoils into the waters of the U.S. , pursuant to the Clean Water Act, Section 404 (33 U.S.C. • 1344) . -- All actions for which permits are required prusuant to Section 103 of the Marine Protection, Research and Sancturaries Act of 1972 (33 U.S.C. 1413) . -- Construction of artificial islands and fixed structures in Long Island Sound pursuant to Section 4 (f) of the Rivers and Harbors Act of 1912 (33 U.S.C. ) . Department of Energy, Federal Energy Regulatory Commission: -- Licenses for non-Federal hydroelectric projects and primary transmission lines under Section 3 ( 11 ) , 4 (e) and 15 of the 104. 1 Federal Power Act ( 16 U.S.C. 796 ( 11 ) , 797 ( 11 ) and 808) . -- Orders for interconnection of electric transmission facili- ties under Section 202 (b) of the Federal Power Act (15 U.S._C. 824 a (b) ). -- Certificates for the construction and operation of interstate natural gas pipeline facilities including both pipelines and terminal facilities under Section 7 (c) of the Natural Gas Act ( 15 U.S.C. 717 f (c) ) . -- Permission and approval for the abandonment of natural gas pipeline facilities under Section 7 (b) of the Natural Gas Act (15 U.S.C. 717 f (b) ) . Department of Energy, Economic Regulatory Commission: -- Regulation of gas pipelines, and licensing of import or ex- port of natural gas pursuant to the Natural Gas Act ( 15 U.S.C. 717) and the Energy Reorganization Act of 1974. -- Exemptions from prohibition orders. Environmental Protection Agency: -- NPDES permits and other permits for Federal instalations, discharges in contiguous zones and ocean waters, sludge runoff and aquaculture permits pursuant to Sections 401 , 402, 403, 405, and 318 of the Federal Water Pollution Control Act of 1972 (33 U.S.C. 1341 , 1342, 1343, and 1328) . -- Permits pursuant to the Resources Recovery and Conservation Act of 1976. -- Permits pursuant to the underground injection Control program under Section 1424 of the Safe Water Drinking Water Act. (42 U.S.C. 300 h-c) . -- Permits pursuant to the Clean Air Act of 1976 (42 U.S.C. 1857) . Department of Interior, Fish and Wildlife Services: -- Endangered species permits pursuant to the Endangered Species Act ( 16 U.S.C. 153 (a) ) . Nuclear Regulatory Commission: -- Licensing and certification of the siting, construction and operation of nuclear power plants pursuant to Atomic Energy Act of 1954, Title II of the Energy Reorganization Act of 1974 and the National Environmental Policy Act of 1969. 104.2 • Department of Transportation, Coast Guard: -- Construction or modification of bridges, causeways or pipelines over navigable waters pursuant to 49 U.S.C. 1455. Department of Transportation, Federal Aviation Administration: -- Permits and licensies for construction, operation or alteration of airports. c. Federal Assistance* Department of Commerce 11 .300 Economic Development - Grants and Loans for Public Works and Development Facilities. 11.301 Economic Development - Business Development Assistance. 11.302 Economic Development - Support For Planning Organizations. 11.304 Economic Development - State and Local Economic Development Planning. 11.305 Economic Development Planning - State & Local. 11.308 Grants to States for Supplemental and Basic Funding of -Titles I, II, III, IV, and V Activities. 11.4170 Sea Grant Support 11.427 Fisheries Development and Utilization - Research and Demonstration Grants and Cooperative Agreements Programs 11.501 Development and Promotion of Ports and Intermodal Transpor- tation. _ 11.509 Development and Promotion of Domestic Waterborne Transport Systems. Department of Housing and Urban Development 14. 112 Mortgage Insurance - Construction or Substantial Rehabili- tation of Condominium Projects. 14. 115 Mortgage Insurance —Development of Sales Type Cooperative Projects. 14. 117 Mortgage Insurance - Homes. 14. 124 Mortgage Insurance - Investor Sponsored Cooperative Housing. *Numbers refer to the Catalog of Federal Domestic Assistance Programs. 104.3 14. 126 Mortgage Insurance - Management Type Cooperative Projects. 14.218 Community Development Block Grants/Entitlement Grants 14.219 Community Development Block Grants/Small Cities Program. 14.221 Urban Development Action Grants. Department of Interior 15.400 Outdoor Recreation - Acquisition, Development and Planning. 15.402 Outdoor Recreation - Technical Assistance. 15.403 Disposal of Federal Surplus Real Property for. Parks, Recreation, and Historic Monuments. 14.411 Historic Preservation Grants-In-Aid. 15.417 Urban Park and Recreation Recovery Program. 15.600 Anadromous Fish Conservation. 15.605 Fish Restoration 15.611 Wildlife Restoration 15.613 Marine Mammal Grant Program 15.802 Mineral Discovery Loan Program. 15.950 National Water Research and Development Program. 15.951 Water Resources Research and Technology - Assistance to State Institutes. 15.952 Water Research and Technology - Matching Funds to State Institutes. Coastal Barrier Resources Act. Department of Transportation 20. 102 Airport Development Aid Program. 20. 103 Airport Planning Grant Program. 20.205 Highway Research, Planning, and Construction. 20.309 Railroad Rehabilitation and Improvement - Guarantee of Obligations. 104.4 20.310 Railroad Rehabilitation and Improvement - Redeemable Preference Shares. 20.506 Urban Mass Transportation Demonstration Grants. 20.509 Public Transportation for Rural and Small Urban Areas. General Services Administration 39.002 Disposal of Federal Surplus Real Property. Community Services Administration 49.002 Community Action. 49.011 Community Economic Development. 49.013 State Economic Opportunity Offices. Small Business Administration 59.012 Small Business Loans 59.013 State and Local Development Company Loans. 59.024 Water Pollution Controls. 59.025 Air Pollution Control Loans. 59.031 Small Business Pollution Control Financing Guarantee. Environmental Protection Agency 66.001 Air Pollution Control Program Grants. 66.418 • Construction Grants for Wastewater Treatment Works. 66.426 • Water Pollution Control - State and Areawide Water Quality Management Planning Agency. 66.451 Solid and Hazardous Waste Management Program Support Grants. 66.452 Solid Waste Management Demonstration Grants. 66.600 Environmental Protection Consolidated Grants Program Support - Comprehensive Environmental Response, Compensa- tion and Liability (Super Fund) . 104.5 2. STATE ACTIONS AND PROGRAMS Council on the Arts -- Provision of funding under the architecture and environmental arts program. Department of Correction Services -- Planning, development, construction, major renovation or expansion of facilities. Dormitory Authority of the State of New York -- Provision of tax-exempt financing for capital construction in the areas of higher education and health care. -- Provision of construction management, planning and design services for capital projects. State Energy Planning Board and Energy Office -- Preparation and approval of the State Energy Master Plan. New York State Energy Research and Development Authority -- Issuance of revenue bonds to finance pollution abatement modi- fications in power-generation facilities and various energy projects. Department of Environmental Conservation a. Issuance of Permits or Licenses* ( 1 ) Land Related (a) Permit for Liquid Natural Gas and Liquid Petroleum Gas Facilities. (b) Mining/Mined Land Reclamation Permit (c) Underground Storage Permit (Gas) *DEC administers over 175 permits and licences. The following are those most likely to involve actions in or related to the coastal area. 104.6 (d) • Freshwater Wetlands Permit. (e) • Tidal Wetlands Permit. (f) Permit for Activities or Development in Coastal Erosion Hazard Areas. (2) Air Related (a) Permit for Restricted Burning. (b) Permit to Construct and Operate a Stationary Combustion Installation; Incinerator; Indirect Source of Air Contamination; Process, Exhaust or Ventilation System. (3) Water Related (a) Permit to Use Chemicals for the Control or Elimination of Aquatic Insects. (b) Permit to Use Chemicals for the Control or Elimination of aquatic weeds. (c) Permit to Use Chemicals for the Control or Extermination of Undesirable fish. (d) Dam Construction Permit. (e) • Permit to excavate or Fill in Navigable waters. (f) Permit for Stream Bed or Bank Disturbances. (g) Water Supply Permits. (h) Permits for Transportation of Water by Vessel. (i) Certification of Major Onshore Petroleum Facility. (j) • State Pollutant Discharge Elimination System Permit and Approval of Plans for Wastewater Treatment. (k) • Section 401 Water Quality Certification. (4) Others (a) Permits for Activities Affecting Wild, Scenic and Recreational Rivers. (b) Permit for Radioactive Discharge. (c) Permit to Construct and/or Operate a Solid Waste Management Facility. (d) Permit to Construct and/or Operate a Hazardous Waste Facility. (e) Waste Transporter Permits (f) Digger's Permit (Shellfish) . (g) License of Menhaden Fishing Vessel (marine waters) . (h) License for Non-Resident Food Fishing Vessel (marine waters) . (i) Non-resident Lobster Permit. (j) Marine Hatchery (and/or Off-Bottom Culture Shellfish) Permits. (k) Permit to Take Blue-Claw Crabs (Resident) . (1) Resident Commercial Lobster Permit. (m) Shellfish Bed Permit. (n) Permit to Take Surf Clams from Waters Other than the Atlantic Ocean. 104.7 • b. Other Programs and Activities ( 1 ) • Review and approval of grant application plans and specifications for wastewater treatment facilities. (2) • Drainage Improvement Distict Approval. (3) Certificate of Approval for Air Pollution Episode Action Plan. (4) Certificate of Compliance of Tax Relief - Air Pollution Control and Waste Water Treatment Facilities. (5) Implementation of The Environmental Quality Bond Act of 1972, including: (i) Water quality Improvement Projects; and (ii) Land Preservation and Improvement Projects including Wetland Preservation and Restoration Projects, Unique Area Preservation Projects, Metropolitan Parks Projects, Open Space Preservation Projects and Waterways Projects. (6) • Provision of Operation and Maintenance Aid to Municipal Waste- water Treatment Facilities. (7) Administration of Water Quality Classification Monitoring and Surveillance Efforts. (8) • Development and Maintenance of State Supported Flood Control, Beach Erosion and Other Water Resource Projects. (9) Administration of the Air Pollution State Implementation Plan (s) . (10) Administration of funding for cleanup of toxic waste sites. ( 11 ) Actions under the Urban Fisheries and Wildlife Programs. ( 12) Action under the Protection of Natural and Manmade Beauty Program. ( 13) Actions under the Marine Finfish and Shellfish Programs. Environmental Facilities Corporation -- Financing of pollution control facilities for industrial firms and small business. 104.8 _ Office of General Services -- Planning, development, construction, major renovation or expansion of facilities. -- Administration of the Public Lands Law including acqui- sition and disposition of lands, grants of land and grants or easement of land underwater and issuance of licenses for removal of materials from land under water. -- Administration of Article 4-B, Public Buildings Law, in regard to the protection and management of State historic and cultural properties and State user of buildings of historic, architectural or cultural significance. Department of Health -- Planning, development, construction, major renovation or expansion of facilities and the provision of funding for such activities. -- Issuance of permits to operate sanitary facilities for realty subdivisions. Division of Housing and Community Renewal -- Preparation or revision of statewide or specific plans to address State housing and community renewal needs. -- Planning, development, construction, major renovation or expansion of facilities or the provision of funding for such activities, including but not limited to actions under the following programs: a. Housing Development Fund Programs b. Federal Housing Assisstance Payments Programs. (Section 8 Programs) . -- Provision of funding under the Neighborhood and Rural Preservation Companies programs. -- Provision of funding for urban renewal projects. -- Provision of funding under the Urban and Rural Initiatives Grant Program. 104.9 New York State Housing Finance Agency -- Provision of funding for the construction, major renovation or expansion of facilities. Job Development Authority -- Provision of low-interest mortgage loans to local non-profit development corporations to finance com- mercial and industrial facilities. Job Incentive Board -- Provision of tax abatements or credits to business firms. Office of Mental Health -- Planning, development, construction, major renovation or expansion of facilities and the provision of funding for such activities. Office of Mental Retardation and Development Disabilities -- Planning, development, construction, major renovation or expansion of facilities and the provision of funding for such activities. Division of Military and Naval Affairs -- Administration of the State Disaster PreparednessPlan. Natural Heritage Trust -- Provision of grants to natural heritage institutions. Office of Parks, Recreation and Historic Preservation -- Planning, development, construction, major renovation or expansion of facilities and the provision of funding for such activities. -- Preparation, revision and implementation of the Statewide Comprehensive Outdoor Recreation Plan and the Statewide Historic Preservation Plan and execution of other planning activities for public access, recreation, historic preser- vation or related purposes. -- Provision of funding for State and local activities from the Land and Water Conservation Fund. -- Planning, development, implementation or the provision of funding for recreation services programs. 104.10 —. Nomination of properties to the Federal and/or State Register of Historic Places. -- Provision of Funding for State and local historic preser- vation activities. Power Authority of the State of New York -- Planning, development, construction, major renovation or expansion of electric generating, electric transmission and other facilities. -- Acquisition, disposition or lease of land. Board on Electric Generating Siting and the Environment Public Service Ccrrmission -- Certification of Environmental Compatibility and Public Need Regarding the Siting of: a. Major Steam Electric Generating Facilities b. Major Utility Transmission Facilities New York State Science and Technology r'oundation -- Actions under the Lorporation for Innovation vevelopment Program. -- Actions under the Center for Advanced Technology Program. Department of Social Services -- Provision of funding under the Homeless Housing and Assistance Program. -- Planning, development, construction, major renovation or expansion of facilities and the provision of funding for such activities. Department of State —.Provision of funding for the implementation of an approved Local Government Waterfront Revitalization Program. Department of Transportation -- Administration of the following permits and approvals: a. Certificate of convenience and Necessity to Operate a Railroad. 104.11 b. Highway Work Permits. c. Outdoor Advertising Permit ( for off-premises advertising signs adjacent to interstate and primary highway) . d. License to Operate Major Petroleum Facilities. -- Actions under the Public Transportation Program, including but not limited to the following: Transit Subprogram a. Studies and evaluations relating to the State Operating Assistance Program. b. Approval of municipal or regional transportation authority applications far funds for design, construction and rehabilitation of omnibus maintenance and storage facilities. c. Approval of municipal or regional transportation authority applications for funds for design and construction of rapid transit facilities. Rail Subprogram a. State subsidies to marginal branchlines abandoned by ConRail. • b. State subsidies for passenger rail service. c. Planning and implementation of the Rail Capital Programs. Planning Subprograms a. Preparation of the State-wide Master Plan For Transportation. b. Plans, studies, demonstration projects and other planning activities conducted by the Metropolitan Transportation Council. Highways, Aviation and Ports Subprogram a. Approval of applications for airport improvement (construction projects) . -- Real Estate Program a. Acquisition and disposition of real property used for transportation purposes. -- Design and Construction Program a. Design, construction and rehabilitation of State highways 104. 12 and State parkways (excluding routine maintenance and minor rehabilitation) . b. Design and construction activities related to the rehabilitation and replacement of bridges on the State highway system. c. Provision of financial assistance for the oonstruction/ reconstruction and reconditioning/preservation of munici- pal streets and highways (excluding routine maintenance and minor rehabilitation) . d. Provision of financial assistance for the rehabilitation and replacement of municipal bridges. -- Highway Maintenance Facilities a. Design and construction of State highway and State parkway maintenance facilities, including acquisition of real property for such purposes. -- Water Operation and Maintenance Program a. Actions related to the containment of petroleum spills and development of an emergency oil-spill control network. NYS Urban Development Corporation and Its Subsidiaries and Affiliates -- Planning, development, financing, construction, major renovation or expansion of residential, commercial, industrial and civic facilities and the provision of funding for such activities, including but not limited to actions under the following programs: a. Tax-Exempt Financing program b. Lease Collateral Program c. Lease Financing Program d. Targeted Investment Program e. Industrial Buildings Recycling Program -- Administration of special projects. -- Administration of State-funded capital grant programs. Division of Youth -- Planning, development, construction, major renovation or expansion of facilities and the provision of funding for such activities. 104.13 B. FEDERAL AND STATE ACTIONS NECESSARY TO FURTHER THE LWRP 1 . Federal Actions and Programs a. Department of Defense, Army Corps of Engineers ( 1 ) Authorization of Dredging, etc: Will be important as part of the cooperative harbor maintenance program (p.77) to improve navigation. Corps approval is a condition of federal financial support as a complement to local and county efforts. (2) Selection of Open Water disposal Sites: Important to the same program (p. 77) since the proximity of such sites has significant impact on the cost and feasibility of dredging projects. conversely such sites must be located and controlled so as to prevent damage to the environmentally sensitive shoreline. (3) Approval of Private Improvement Plans: Important for dredging, bulkheads, etc. undertaken privately to assure that such project consider environmental consequences. (14) Dredge Spoil Disposal Approvals: May be required for the creation of a man-made salt marsh, one of the measures being considered as part of the program to restore the Premium Mill Pond. (Page73) b. Department of Commerce ( 1 ) Sea Grant Support: Is important to sustain research and technical assistance to better understand and develop solutions to coastal problems. c. Environmental Protection Agency ( 1 ) Construction Grants for Wastewater Treatment Works: May provide assistance in increasing the capacity and effective- ness of the two treatment plants serving the Village and Town and aid in relieving pollution resulting from their deficiencies. (2) State and Area-wide Water Quality Management Planning Agency Support: Can help develop the inter-municipal programs and cooperation needed to develop drainage basin solutions. d. Department of Agriculture ( 1 ) Soil and Water Conservation Service: Westchester County SWC District, in cooperation with County Planning Department, provides technical expertise on hydrological studies and facilitates municipal and inter-municipal drainage basin management programs. Important for watershed management and flood and erosion control throughout this coastal area. • 104. 14 2. State Actions and Programs a. Department of Environmental Conservation ( 1 ) Review and Approval of Federal Applications for Wastewater Treatment Facilities: Should consider the problems and policies set forth in the LWRP. (2) Approval of Protection of Waters Permits, Freshwater Wetlands Permits and Tidal Wetlands Permits: Must be coordinated with local regulations and policies. (3) Drainage Improvement Districts: Approval may be one of the methods required to establish inter-municipal agreement on joint drainage basin management. (4) State Pollution Discharge Elimination System Permits: Should only be granted in conformance with the policies and criteria established in the LWRP so as to enforce its objectives. (5) Funding for Flood and Erosion Control Projects: Identified in the LWRP could substantially further the objectives of the LWRP. (6) Construction Management Program: For wastewater treatment facilities can be a source of funding for sewer repair and improvement. b. Office of Parks, Recreation and Historic Preservation ( 1 ) Nomination to State and Federal Register of Historic Places: Can assist in the preservation of historic landmarks through both legal protection and funding eligibility. 104.15 ' • , i a '' 'IIir s= „ , _--;4.' Z S +--..,.,,�-.........,-,-....r.....,._. c.._.. 4 k: r 4 �'r y y s' 7 c . i s 4 ti l r .. 9r --"( e e ,id ,,�,. 11,/ / __ _ :t' } +l() - I r+, y At,i -'of .'an 4 _ 1 5 '. VILLAGE TOWN OF OF LARCHMONT MAMARONECK The preparation of this report was financially _ aided through a federal grant from the Office of -^ ' -• Ocean and Coastal Resource Management, ` National Oceanic and Atmospheric Admin- _ '^`�`> IIMI;II istration under the Coastal Zone Management Act of 1972, as amended. This report was --v----.77: -.. : ,�-f prepared for the New York Department of State. _ . L `4V.' .4 i� �t r •! >.�1 . tortx. r `4- - . JJz ?is �71 * 2 . ` t tib!? r. �v, 4:345 SECTION VII �- �' tit CONSULTATION WITH4 4 t i ...,_ _ -_-.1-. _ .. t. ..„1 . ..:,:_ , OTHER - AGENCIES �'�.4. . '10. IES SECTION VII: CONSULTATION WITH OTHER AFFECTED FEDERAL, STATE, REGIONAL AND LOCAL AGENCIES A. Adjacent Municipalities LWRP planning in this bi-municipal area can affect, and be affected by, policies and actions of nearby municipalities both along the Sound shore and directly inland. Most important of these interactions for our planning are with three immediate neighbors; the City of New Rochelle, the Town/Village of Scarsdale, and the Village of Mamaroneck. Relations between our Coastal Zone Management Committee and the Village of Mamaroneck were established at the outset of the Committee's life in late 1982 and have remained active and useful throughout the planning period. Mamaroneck Village's earlier start in LWRP planning enabled its Coastal Zone Management Commission, chaired by Kathryn H. Clarke, to give our Committee valuable advice on many aspects of the planning process. More- over, the two areas have important problems in common. Both suffer from upstream flooding involving other municipalities (including each other) ; thus, cooperation with each other and with neighboring municipalities for flood and siltation control has been a basic theme in LWRP planning for both, and a frequent subject of consultation. Our Committee has also initiated contacts with New Rochelle and Scarsdale, the two upstream municipalities whose cooperation is most important to the flood and erosion control, wildlife habitat, and anti-pollution elements in our LWRP. Copies of our draft Inventory and Analysis were sent to offi- cials of both municipalities in February 1984, as well as to the Village of Mamaroneck. In May 1984 members of the Committee, with its consultant Daniel Shuster, met with officials of the New Rochelle Planning and Devel- opment Department and their planning consultant for an exchange of informa- tion on our planning effort and on the new LWRP planning effort on which New Rochelle was then starting out. In the same month the Committee initiated an exchange of correspondence with officials of Scarsdale. These contacts have helped to lay a basis for future discussions of intermunici- pal cooperation in shared watersheds. B. Westchester County Government The above contacts have been reinforced by parallel contacts with officials of Westchester County. The County Planning Department and the staff of the Westchester County Soil and Water Conservation District, which is associ- ated with the Planning Department, have both been kept informed of the LWRP process and supplied with key documents, and have given useful advice on questions relating to the LWRP. Principles embodied in the Planning Department's "Best Management Practices" manuals have been incorporated in the draft LWRP. At the legislative level, County Legislator Diane A. Keane, who represents this district, has also been kept informed of LWRP planning progress and has made supportive statements at two public meeting (April 26 and November 27, 1984) held by the Committee in the town and Village. Mrs. Keane and 105 Director Laura E. Tessier of the Soil and Water Conservation District have both encouraged the Committee to seek intermunicipal solutions to watershed problems in the coastal zone. In return, a representative of the Committee made a statement in public hearings conducted by Legislator Keane in October 1984 on County and intermunicipal aspects of stormwater management. The Committee has also kept informed on contacts between the governments of the Town and Village on the one hand, and County agencies on the other, concerning matters bearing on the LWRP, notably the program to eliminate illegal sewer connections. Governmental actions resulting from these contacts are reflected in the draft LWRP. C. State of New York 1. Contact with the Department of State, Coastal Management Staff has been continuous and constructive since the inception of the LWRP planning process. 2. Useful comments were received by the Committee, through the Department of State, from the Division of Regulatory Affairs, Department of Environmental Conservation, on several aspects of the October 1 draft of the LWRP. (Barbara Haines memo, 14 November 1984.) D. Resolution of Conflicts No conflicts between the LWRP and the policies or programs of the munic- ipalities and agencies referred to above are presently known to the Coastal Zone Management Committee. The consultative relationships here described will be helpful in resolving any such conflicts that may arise in the future. 106 a i I 4. s-•—' k ys p SI 7t 7 • i VILLAGE TOWN OF OF LARCHMONT MAMARONECK The preparation of this report was financially _ aided through a federal grant from the Office of Ocean and Coastal Resource Management, Ple National Oceanic and Atmospheric Admin- + 1--, istration under the Coastal Zone Management —,rte Act of 1972, as amended. This report was . - prepared for the New York Department of -.':`- '-P 4- ' State. '" "• . " ,_ -411,-z� . y ' i10.2^.-'6.1 `; ,,r i ((� Lam... fr } ,% N`+ 4 r , , - ; +fir -"- . ,-t a ,,. ` ` � , � *apw.i , +et c` ; f ry�. .,ji 1 A } y. _mitt Vie - ' 'S� , 'x _e s 1'7At iv SECTION VIII st .10 li LOCAL sry COMMITMENT SECTION VIII: LOCAL COMMITMENT 1. The first step in seeking public commitment in Larchmont to the LWRP was taken in the choice of individuals appointed by the Village to the Coastal Zone Management Committee when this body was first established in September 1982. In addition to several members appointed for their known interest and expertise in ecology, water management, and other relevant subjects, representation was also obtained from concerned private organizations in the Village including the shoreline clubs and property owners' groups. Subsequently, when the Committee became a bi-municipal body, the members appointed by the Town Council -- as well as additional members appointed by the Village -- included individuals with extensive experience in local government and community service. 2. All working meetings of the Committee, held at least once each month, are open to the public. Many have been attended and addressed by interested citizens. Prior notice of meetings is routinely sent to the local news media. The Daily Times (Mamaroneck) and the Soundview News have published numerous articles on the work of the Committee and the LWRP planning process. 3. In June 1984 the Committee published as .a paid advertisement in The Daily Times a questionnaire designed to obtain residents' views on the merits and relative importance of various issues with which the LWRP was expected to deal. Responses were received from about 40 individuals and were taken into account by the Committee in its work. One respondent commented: "Bravo! A survey like this is a very good idea . . . why not do it every year?" 4. On April 27, 1984, and again on November 27, the Committee held well-publicized public meetings to acquaint interested residents with the program and to obtain their views on the issues involved. Attendance at the first meeting -was about 75, at the second about 60. Committee members and the Committee's professional consultant addressed the meetings and answered questions. In advance of the November 27 meeting the Committee distributed widely throughout the community a 10-page "Overview" of the draft program. 5. The Committee has not shied away from controversy when it arose but has sought to deal with it through open discussion and debate. When disagree- ment arose in the Village of Larchmont on the issue of a permanent manage- ment structure for the LWRP, opposing views on the subject, written by a member of the Village Board and the Larchmont co-chairman of the Committee, were published by The Daily Times in adjoining columns. The issue was later resolved by negotiation. 6. Material about the LWRP, both for and against, has also appeared in the letters column of The Daily Times. A notable item in this category was a letter printed July 10, 1984, from Town Supervisor Dolores Battalia and Village Mayor Miriam Curnin, supporting the Committee's questionnaire project and calling the LWRP process "an unparalleled opportunity to plan 107 with intelligence to nurture and protect the beautiful gift which is our coastal area." 7. Brief accounts of the LWRP process have been printed in the 1984 annual report of the Tri-municipal Conservation Advisory Commission and in "Facts of Life in Larchmont," a periodical information bulletin of the Village government. 8. Members of the Coastal Zone Management Committee have participated as speakers and/or panelists in several meetings organized by local citizens' organizations: a Larchmont-Mamaroneck forum on coastal zone planning organized by the local Leagues of Women Voters on October 18, 1984; a meeting of the Larchmont-Mamaroneck Civic Association, a property owners' group, on March 26, 1985; a Larchmont Rotary Club luncheon, July 12, 1985; and a League of Women Voters forum on the "Westchester 2000" report (a County-wide study of long-range issues) , November 14, 1985. Discussions have been held for a briefing of realtors in the Larchmont-Mamaroneck area. Candidates for the Mamaroneck Town Council were briefed,'on the LWRP in October 1984 prior to the November election. 9. In connection with the LWRP planning process, "Coast Week 1984" (October 7 to 14) was proclaimed officially by the Supervisbr of the Town of Mamaroneck and the Mayor of the Village of Larchmont. 10. Filming is under way for a program on the LWRP on local access cable TV, with footage at locations critical to the program such as the Larchmont Manor Park, the Larchmont Reservoir, and the tidal marshes. 108 i � `i r } 42`{ . ` I r4C F.. J1Lx It J AS$,. ' +;1 `a � r � k it t. ''4 �r i ,fit; j�C .r i � ^: 1a r I • , t. • _,t LLi '..4 t ��2), , �/ r t 'ti."6b t 4i '4 } r tf t`� /p 1�ryyc 1z 1 t, 1 iL.,- , \ _ _ t. VILLAGE TOWN OF OF LARCHMONT MAMARONECK The preparation of this report was financially aided through a federal grant from the Office of r Ocean and Coastal Resource Management, National Oceanic and Atmospheric Admin- 4 ,I istration under the Coastal Zone Management Act of 1972, as amended. This report was ;7 ` prepared for the New York Department of __ - % r y • State. `'�' .l x4 �, f" F t 1' ,gyp, "h• i al . it G t , ,,Xt , ,1 2 SECTION IX , ,. r . :4 t , - DRAFT $' �` ENVIRONMENTAL IMPACT STATEMENT DRAFT ENVIRONMENTAL IMPACT STATEMENT (GENERIC) LOCAL WATERFRONT REVITALIZATION PROGRAM 111111111111111111111111111111111111111 Village of Larchmont/Town of Mamaroneck Lead Agency Village Board Town Board Village of Larchmont Town of Mamaroneck Village Hall Town Hall Larchmont, NY 10538 Mamaroneck, NY 10543 Contact Persons Shirley W. Tolley Wallace Irwin, Jr. (914) 682-1992 (914) 834-1962 Coastal Zone Management Committee Prepared by Shuster Associates RD #1 , Box 259 Stone Ridge, New York 12484 Contact Person: Daniel Shuster (914) 687-0758 December 1985 Section IX - Contents Page A. Summary 109 B. Description of the Proposed Action 110 C. Environmental Setting, Significant Impacts and Mitigation Measures 117 D. Unavoidable Adverse Environmental Impacts 125 E. Irreversible and Irretrievable Commitments of Resources 125 F. Growth Inducing Aspects 125 G. Effects on the Use and Conservation of Energy Resources 125 H. Alternatives 125 SECTION IX: DRAFT ENVIRONMENTAL IMPACT STATEMENT (Generic) A. Summary The Environmental Impact Statement (EIS) which follows is a "generic" EIS since it addresses a broad program of land and water use policies, plans and specific recommendations included in the proposed Local Waterfront Revitalization Program (LWRP) . Its purpose is to provide an analysis of the general implications of the total program and a basis for evaluating the impact of future actions which may result from it. 1 . Nature and Purpose of Proposed Actions The proposed actions are: adoption by the Village of Larchmont and by the Town of Mamaroneck of a Local Waterfront Revitalization Program (LWRP) for the area within their proposed Coastal Boundary (see Map 2) , and enactment by them of certain items of Legis- lation called for by that Program. The LWRP has been prepared under guidelines established by the New York State Department of State, and, upon approval, will comprise an element of the New York State Coastal Management Program. The LWRP is intended to provide the guidance and techniques for the Town and Village to protect, enhance and restore their coastal resources. It will provide a context within which future decisions on specific actions can be made. The program includes specific policies and implementing actions,including enactment of the Legis- lation described in Section B. below. Their main purposes are to control flooding, erosion, and pollution, to preserve important natural features, to preserve waterfront access and recreational opportunities, and to preserve historic, cultural, and scenic landmarks. 2. Significant Impacts The most significant impact resulting from the adoption of the LWRP will be the beneficial one of establishing coherent policies and plans for the use and protection of the waterfront and the adjacent coastal area, including guidelines for subsequent land- use and other actions relevant to the purposes stated above; and for evaluating the impact of specific actions within the coastal area. Other benefits will result from adoption of implementing laws, regulations, and other actions called for in the LWRP and from establishment of a management structure to coordinate imple- mentation. The impact of each specific physical action recommended by or permitted under the LWRP, whether beneficial or adverse, will be evaluated as part of the site-specific environmental review of the particular action. Some possible impacts are discussed in Part C. below. 109 • 3. Mitigation Measures The major impact of the adoption of the LWRP will be beneficial and no mitigating measures are necessary. Mitigation of the few possible adverse impacts of specific actions which may result from implementation of the plan (each of which will require a site- specific environmental review) is discussed in Part C. below. 4 . Alternatives The alternatives considered were either not to adopt any local plan for the coastal area or to vary specific policies or imple- menting actions discussed in the LWRP. 5. Matters to be Decided The only maters to be decided at this time are: (a) the adoption of the LWRP by the Board of Trustees of the Village of Larchmont and the Town Council of the Town of Mamaroneck, and (b) the enactment by them of those items of legislation called for by the LWRP and described in Section B.3. below. B. Description of the Proposed Actions 1 . Purpose The purpose of adopting the Local Waterfront Revitalization Program (LWRP) and related legislation is to provide a comprehensive set of policies and an action program to deal with a variety of inter- related issues in the coastal area. The basic objectives of the program can be divided into the following categories: a. To reduce and control flooding, erosion and siltation, mainly from storm water runoff upstream but also from - coastal storms and high tides. b. To eliminate raw sewage overflow, and control chemical pollution and litter, in residential areas, streams, and coastal waters; and by these and other means to protect residential properties, critical environmental areas, important wildlife habitats, and recreational resources. c. To maintain existng water-related recreational resources and access thereto; to keep the harbor dredged for recreational boating; and to assure that, if opportunities should arise to increase such recreational facilities, actions to that end will be compatible with environmental and neighborhood values. d. To protect historical and scenic resources. 2. Description of the LWRP The following description of the Local Waterfront Revitalization Program is organized under the four objectives set forth above. 110 Within each category, existing conditions are described, proposed policies highlighted, and specific actions proposed. a. Control of Flooding, Erosion and Siltation - A key element in furthering this set of purposes is the progrm's proposal on the Coastal Zone Boundary (I, page I-2) . The statewide boundary established by New York State for the coastal zone follows the Boston Post Road. However, State planning guidelines permit a municipality to propose a revised boundary. The draft program pro- poses that the boundary include the entire area over which the two municipalities have jurisdiction, i.e. , the en- tire Village of Larchmont and the Unincorporated Area of the Town. This wider boundary is considered essential to control flooding, siltation, and other evils which damage residential areas, wetlands, wildlife habitats and coastal waters. Moreover,the intermunicipal cooperation needed to control flood waters orig- inating upstream can best be obtained if the flood control and land use provisions of this program are applicable through- out the bi-municipal area. The chief source of damage to the coastal area, and of further threat of damage, is upstream flooding from overbuilt water- sheds (II,page 1 ) , with associated erosion, siltation and sewage overflow. A principal historical cause of this problem is the steady reduction of open space, which absorbs and retards the flow of stormwater and reduces flooding down- stream. Protection of the remaining areas of open space-- parks, conservation areas, and private golf courses totaling 722 acres (part 3-g)--is therefore of critical importance. Moreover, since the watersheds originate wholly or partly beyond municipal boundaries, the remaining open space in neighboring municipalities, to the extent of those shared watersheds, is also of great importance to the Village and Town. Section II (parts6,7 and 8) of the draft program describes the combined effects of these upstream factors in three water- sheds: Pine Brook-Premium, Sheldrake, and East Creek-Gut Creek-Hommocks. In addition, equinoctial storms and high tides cause periodic coastal flooding and erosion in the Premium- Pryer Manor and Hammocks-Little Harbor Sound areas. Numerous policy provisions and preventive or remedial measures to deal with flooding, erosion and siltation are included in Sections III and IV. The majority are concerned with upstream flooding. References are to sections of the complete text of the draft LWRP. 111 • Policy- 14 calls for a new requirement that all new develop- ments on properties over 10,000 square feet in area must be designed to prevent any increase in storm water runoff be- yond the property. For undeveloped properties exceeding 5 acres, including two large golf courses and part of a third, all in the unincorporated area, a stricter formula calls for measures to reduce storm water runoff by 10 percent (IV, part A -1 ) . (In both formulas, reduction of the runoff rate into the property from upstream is not permitted. ) In addition, the Town portion of the Hampshire Country Club golf course next to the sensitive Hommocks Marsh and Little Harbor Sound, now in the R - 7.5 zone, is to be rezoned as R-30. Finally, to improve application of the Town's Flood Damage Prevention law and Freshwater wetlands law (the latter currently under revision) , the Town will cause new maps to be drawn delineating the areas to which these laws, and land use and development decisions pursuant to them, will apply. For the Upper Sheldrake (West branch) drainage basin, which includes the Larchmont Reservoir Conservancy, Policy 14 outlines a wide-ranging flood control strategy involving land use controls, engineering projects, and cooperative arrangements with neighboring municipalities which share the Sheldrake basin. To select the right mix of projects, technical research and feasibility studies are proposed (IV, B-2) drawing on a pioneering hydrological study of the Upper Sheldrake recently completed by the County Soil and Water Conservation District. Among possible steps to be studied are an early flood warning system; restoring the disused Carpenter's Pond, upstream from the Reservoir, for flood control use; dredging the upper reservoir; modifying the upper dam for more rapid drainage in advance of flood waters; etc. Farther downstream, the draft calls for a new retention basin to retard flood waters and excavation of the river channel and construction of a stilling basin in the steep area above Gardens Lake (IV, B - 3) . Also, as further elements in a broad flood control strategy, Policy 14 suggest the need for similar technical studies of the Pine Brook-Premium and East Creek-Hommocks drainage basins. Finally, throughout the bi-municipal area, control of flooding and siltation is to be further advanced by installing and maintaining large silt traps above the Premium and Hammocks 112 marshes and by improving the design and maintenance of catch basins in Town and Village Streets (IV, B - 5) ; and by requiring construction projects of significant size to conform to Westchester County's "Best Management Practices" guidelines in order to minimize runoff, erosion, siltation and pollution during construction (Policy 14A) . For many of the above measures the draft program proposes cooperative action with neaby municipalities, especially New Rochelle, Scarsdale, and the Village of Mamaroneck. Cooperation would cover zoning regulations, "Best Management Practices" in construction, and engineering feasibility studies. (Policies 14, 14A; see also II, part 5, and V, B-2) . Coastal flooding and erosion, a result of coinciding storms and high tides especially in spring and fall, constitute a signficant problem in the Premium-Pryer. Manor area and in Little Harbor Sound. The program calls for physical actions to stabilize erosion-prone stream banks and beaches and for application of up-to-date flood damage prevention standards under the Federal flood insurance program (Policies 11 , 12- 14, 17) . b. Control of Sewage, Chemical Pollution and Litter; Protection of Wildlife Habitats. Sewage problems: The Inventory (II, parts 5, 6, 7, 8, and 10) discusses numerous locations (Larchmont Hills, Pine Brook Drive, Park Avenue, the Sheldrake area near the con- fluence of the two branches, and the harbor area near Cedar Island, among others) where raw sewage overflows into streets, basements, and open coastal waters in periods of heavy storm water runoff. Also, sewage pollution in the nearby coastal waters of Long Island Sound causes frequent closing of swimming beaches in summer and is the cause of a longstanding ban, still in effect, on consumption of shellfish taken in these waters (II, part 3 - h) . Defective sewer lines are partly to blame, but a primary cause (II, part 10) is a long- standing practice of illegally connecting residential and municpal storm drains into sanitary sewers which were not designed to, and cannot, handle the added burden. The draft LWRP calls for a bi-municipal program, in cooperation with the County government (which has recently identified an extensive list of such illegal connections) to eliminate these connections. Other recommended steps are repair of defect- ive County sewer lines; elimination, where feasible, of on-site sanitary systems such as septic tanks; strict enforcement of State effluent standards applying to water- craft and marinas; and support for full secondary treatment in all sewage treatment plants along the sound shore. 113 Chemical pollution and litter: The Inventory (II, part 12 - a) lists numerous sources of pollution from waste oil and other chemical substances: illegal, clandestine disposal into storm drains; broken or leaking underground fuel tanks in buildings; runoff of salt, fertilizer, pesti- cides, etc.--occurring both within and beyond our municipal boundaries. Since a considerable burden of pollution in this highly developed area is problably inevitable, it is all the more important to control the sources that are con- tollable in order to protect and revive the Premium and Hommocks tidal wetlands as wildlife habitats, as well as to protect swimming and other water-oriented coastal recrea- tion. Policies and actions proposed for this purpose include designating the two tidal wetlands as "critical environmental areas" under State law and giving them added protection against adverse development and pollution (Policies 7/7A, 44A) ; improved monitoring and enforcement against hazardous and bioaccumulative pollutants (Policies 8, 10A, 30) ; "Best Mangement Practices" in street cleaning, pest control, soil erosion control, etc. (Policies 33, 37) ; better control of illegal dumping of solid waste, and elimination of the leaf disposal site at the foot of Flint Park (Policy 39; IV, B - 10) ; and conversion of the polluted open section of East Creek, north of Flint Park, into a protected nature preserve (IV, B - 10) . In additon, the best existing techniques should be researched and applied locally to strengthen control of the pervasive problems of litter and dog waste (Policy 39A) . c. Recreation and Public Access The Inventory (II, p. 3 -5) lists properties on or near the Sound shore and waterways leading to it that are open to the public: among them the privately owned Larchmont Manor Park; five Town-maintained conservation areas; Flint Park and other public parks, mainly in the Village; and the ends of a number of Village streets. Water-related recreation in these places is largely limited to passive forms--walking, bird-watching, nature study, photography, etc. For active water sports, swimming is available to Larchmont Village residents, first come first served, at the Manor Beach, owned and managed by the Larchmont Manor Park Society; and boating and swimming are available to members of the Larchmont Yacht Club, the Horseshoe Harbor Yacht Club, and the Larchmont Shore Club. The Inventory and Policy sections both point out (II, part 13 ;, III, Policies 19 and 21 ) that land use patterns severely limit present possibilities for creating public facilities for active water sports along the shore. The Inventory observes in this connection that recreational use of waterfront property either municipal government might in future acquire would be desirable, but would require careful weighing of relevant factors such as public demand, costs, 114 environmental impact, and effect on the residential neighbor- hood. Similarly, Policy 19 says that future increase in active, water-dependent recreational resources should be considered only if the impact on adjacent neighborhoods can be mitigated and adverse effect on the water environment avoided. It adds that priority should be given to retaining and, if necessary, enhancing access to existing facilities. In similar vein, the section on land use (IV, p. 3 - 4) in discussing possible future public acquisition or use of water- front property for recreation, lays down limiting criteria to preserve the residential character of the neighborhood and the natural and manmade environment. It also calls attention to the exclusive authority of each municipal government over zoning and land use within its geographic jurisdiction, i.e. , the Village of Larchmont and the Unincorporated. Area of the Town of Mamaroneck. A major theme in the passages on recreation is the need to prevent reduction or impairment of existing recreational facilities. Public parks suitable for passive water-related recreation are to be retained in public ownership (Policy 20) . If any water-dependent recreational facilities are in danger of conversion to other use, the municipal governments will seek ways to maintain them, including possible ownership or a share of ownership (Policy 21 ) . Also, the municipal govern- ments will take appropriate additional steps in regard to land use in order to prevent reduction of existing waterfront recreational facilities or of access thereto (IV, A-3-a-2) . To prevent navigational obstacles to recreational boating, the program further proposes (IV, B-9) participation in a County-sponsored cooperative harbor dredging program for the Long Island Sound shore. d. Historical and Scenic Preservation The Inventory (II, part 3-d, ) and the Policy section (Policies 23, 25) list a number of sites of historical and scenic importance and call for their protection and preser- vation pursuant to State policy. Among those mentioned are the Larchmont Manor Park; the Premium Mill Pond; the Larchmont Reservoir--James G. Johnson Conservancy; the Manor House at the head of Prospect Avenue, Larchmont; the Larchmont Public Library; an Indian rock shelter adjoining Pine Brook Park; Fountain Square; the Larchmont Yacht Club and the Larchmont Shore Club. Guidelines are laid down under Policy 25 for protection of scenic values. One provision on land use (IV, A-3-a-1 ) calls for rezoning along the Larchmont shore- line in cases where subdivision of larger properties, permissible under the present zoning ordinance, might impair the scenic character of the waterfront, In implementation of Policies 23 and 25, the municipal governments are called 115 upon (V, A-2g) to designate specific historic, archi- tectural, cultural and scenic sites for special pro- tection, and to seek listing of such sites on the national or State Register of Historic Places. 3. Proposed Legislation to be Enacted* The following items of legislation are proposed to be enacted in order to implement the LWRP and are determined to be actions considered in this DEIS. a. Coastal Zone Management Commission A commission will jointly be established by the Town Council and Village Board to monitor and coordinate the implementation of the LWRP. (see Section V. C. ) b. Local Coastal Consistency Laws Laws will be enacted by the Town Council and by the Village Board requiring that actions by all municipal bodies, in- cluding departments, boards, commissions and joint Town- Village bodies shall be consistent with the policies set forth in the LWRP. c. Amended Wetlands Laws Both the Town and Village will amend their local Freshwater Laws to conform to current New York State law. In ad- dition, the Town's law will be amended to include a Fresh- water Wetlands Map delineating all areas to which the law applies. d. Erosion and Sediment Control Law Both the Town and Village will enact Erosion and Sediment Control Laws to require "best management practices" to be followed in construction related activities and stormwater management. e. Amended Site Plan Review Ordinance Both the Town and the Village will amend their site plan review legislation to require zero increase in storm water run-off rate from de-?elopments exceeding 10,000 square feet. In ad- dition, the Town's Site Plan Review Ordinance will be amended to require that, on any parcel of five acres or more, site design shall reduce the rate of run-off by .10%, unless it can be demonstrated that other measures will more effectively achieve flood prevention objectives. *Proposed legislation is annexed hereto. 116 f. Flood Damage Prevention Law (Town) The Town will amend the Flood Boundary-Floodway Map (which is part of the Flood Damage Prevention Law) to include all those areas deemed to be flood-prone based on a professional survey and/or reliable documentation of areas subject to flooding. g. SEQR Law Amendments (Critical Environmental Areas) The Town and Village will amend their local SEQR Laws to pro- vide for establishment of Critical Environmental Areas (CEA) and to designate the Premium Salt Marsh Complex, the Hommocks Salt Marsh Complex, and the Larchmont Reservoir-Leatherstocking Freshwater Wetland Complex as CEA's based on their importance as wetlands and fish and wildlife habitats. h. Zoning Amendments The Town and Village will amend the regulations for their R-30 Districts to require that any new lots fronting on the water shall have an area of at least 50,000 square feet. The Town will also redesignate the Hamphire Country Club and surrounding area as an R-30 District. 4. Approvals, hearings, etc. To be effective, the LWRP must be adopted by the Village of Larch- mont Board of Trustees, the Town of Mamaroneck Town Council and approved by the Secretary of State of the State of New York. Prior to adoption, public hearings will be held to solicit comments from citizens and community groups on the LWRP. In addition, hearings and other actions required by law will take place prior to enactment of the legislation listed above. However, upon completion of all procedures and actions related to this DEIS, no further procedings under SEQR are deemed necessary prior to adoption of legislation here described. Other specific actions called for in the LWRP will also require separate review, approvals and hearings prior to implementation. These will take place in accordance with law and required procedures (including SEQR) at the appropriate time. C. Environmental Setting, Significant Impacts and Mitigation Measures Introduction The proposed coastal area boundary, within which the LWRP will apply, includes the entire Village of Larchmont and unincorporated area of the Town of Mamaroneck. This approximatedly 6 - square-mile area includes some 9 miles of highly indented Long Island Sound shoreline. 117 1 . Land and Water Use a. Setting Almost the entire coastal area is developed under a controlled pattern of commercial and higher density residential uses be- tween the area immediately north of the Thruway (Route I-95) and the Boston Post Road, with lower density development (chiefly R-30) along the waterfront and further inland (see Map 7, Generalized Existing Zoning) . The largest parcels of private undeveloped land consist of two golf courses and ad- jacent property at the northern end of the Town and a portion of a golf course on the Town's boundary with the Village of Mamaroneck. A variety of water dependent recreation, open space and conservation uses are situated along the shore. b. Impact As noted above (Part B-2-a) , the LWRP calls for new limits on development designed to prevent any increase in, and in larger properties tb reduce by 10 percent, pre-existing rates of storm water runoff. A further objective of these restrictions, espe- cially in regard to the larger properties, is to preserve open space for its scenic, recreational, environmental and other values. Another provision, described in Part B-2-d, calls for a new zoning limitation on subdivision of large properties abut- ting the waterfront in the R-30 district; the primary purpose of this is to preserve scenic values and property values in waterfront neighborhoods by preventing obstructions to visual access to the water. In addition, the provisions concerning recreation and pub- lic access (see Part B-2-c) contemplate the possibility that the municipal governments may in future find opportunities to acquire or obtain the use of waterfront properties for recreational pur- poses; but these provisions stress that any such actions must be subject to limiting criteria to mitigate any impact on adjacent residential neighborhoods and avoid damage to the water environment. c. Mitigation None required. Of the actions described, none can have any ad- verse environmental impact--indeed, their impact on the environ- ment will be entirely positive--except possibly the future creation of new waterfront recreational facilities, if this occurs. At present this remains a future possibility only, and any potential adverse impact from it is fully guarded against in the guidelines for mitigation cited above. 118 Some adverse economic impact on developers, and on land- owners seeking development, could flow from the restrictions on development of undeveloped properties, as well as from the stricter limits on subdivision of larger waterfront properties. Such impact may result in limited increases in development costs in the undeveloped areas and some reduction in potential waterfront lots. However, these impacts are not significant when weighed against the positive environmental impacts de- scribed above, which in turn are likely to exert a positive effect on property values and the quality of life in the community as a whole. 2. Geology a. Setting The area is part of the Manhattan Prong, the southernmost pdrtion of the New England geological province. The under- lying rock structure makes for great topographical variety and scenic beauty, with hills and streams running down to a shore made up of numerous small bays, inlets and promontories. Tne characteristics, however, also produce environmental limitations. In many places, the underlying rock is near the surface, limiting the capacity of the ground to absorb water and thus contributing to problems of flooding and siltation. b. Impact Most of the coastal area is already developed, despite the geological limitations. The LWRP includes provisions to minimize the impact of development in the few remaining open areas. Primarily the golf courses, to prevent exacer- bating the already severe problems resulting, in part, from the geological factors. c. Mitigation None required. 3. Water Resources • a. Setting Water resources in the coastal area include three lakes (the two lakes of the Larchmont Reservoir and the small Gardens Lake) , a number of streams carrying runoff 119 from the four drainage basins which traverse the area, a tidal mill pond, various bays and inlets of Long Island Sound and the Sound itself. The upper reservoir is classified A, suitable for human cousumption; the lower reservoir and Gardens Lake are classified as C, suitable for secondary contact recreation and growth and propagation of aquatic life; the west branch of the Sheldrake is classified as D, due to its intermittent flow. Of the saline waters, Premium Mill Pond and the outlet of Fist Creek are designated as I, which ex- cludes both primary contact recreation and shellfishing (a result of the pollution and siltation affecting these areas) . Although the deep waters of the Sound are classified SA, suitable for all salt water uses, most waters near the shore in this coastal area have long since been classified SB, a category that forbids shellfishing for human consumption. The SB classification permits swimming, but does not reflect frequent sewage overflow emergencies after heavy summer rains, when swimming beaches are closed by the County Health Department. Although the Larchmont Reservoir is no longer used as a pub- lic water supply, it remains a standby water source for emergen- cy use. Virutally all of the water bodies mentioned are used for active or passive recreation. Flooding, erosion and silt- ation, resulting from overdevelopment of inland areas, are seriously affecting all of the water bodies in the coastal area. Point and non-point pollution is also affecting these waters adversely. b. Impact The great majority of physical and regulatory actions in the LWRP are aimed at correcting or mitigating conditions of flooding, erosion, and pollution which are damaging the area's coastal resources, or at preventing such conditions from aris- ing. Other actions are designed to promote scenic, historical, and recreational values and to protect them from inappropriate land use or other harmful change. The overall impact of all these actions is strongly positive. Feasibility studies of the Premium area and the Upper Shel- drake and Larchmont Reservoir area will help to determine, prior to action, what types and sequence of actions can best manage the complex problems of these two important re- sources. Installation of silt traps, an improved catch basin cleaning program, relocation of the Flint Park leaf disposal site, and rehabilitation of the open stretch of East Creek, will all serve to reduce siltation and pollution in the Premium and Hommocks marshes and waterways and, in the latter two cases, 120 to enhance areas for passive recreation. Elimination of storm drain connections to the sanitary sewer lines will reduce organic pollution of recreational waters and wildlife habitats. Land use restrictions to check or reduce storm water runoff rates, designation of Critical environmental Areas, adoption of Best Management Practices, and systematic monitoring of pollution are measures intended to control and/or provide careful review of actions which might negatively impact water resources. Harbor dredging, if not undertaken in accord with sound environmental practices, could produce negative impacts by disturbing aquatic vegetation, disrupt circulation pat- terns or transporting sediment. Improper spoil disposal can also have negative side effects. Sheldrake River channel improvements, if not properly designed and coordinated with activities both up and down stream, could merely shift, rather than alleviate, flood conditions. The improvements will also cause some disruption of the natural stream course and vegetation along the banks and may impair the visual quality of the watercourse.. The retention basin in the East Branch of tfle Sheldrake River will require construction of an earthen dam which will retain water in the Sheldrake Conservation Area during heavy runoff. Both the dam and ponded water will impact upon the natural character of the area and somewhat restrict or alter use of the area for passive recreation when the retention basin is functioning. c. Mitigation The only mitigation required pertains to harbor dredging and Sheldrake River flood protection measures. Dredging will take place in accord with all state and federal procedures; dredge material will only be disposed of in designat- ed areas; dredging activities will be coordinated with adjacent communities and Westchester county wherever possible; and prior to any specific dredging project, a full environmental assessment will be required. Channel improvements to the west branch of the Sheldrake River will be designed to minimize disruption of the natural features and scenic character alongthe stream, while providing the flood relief required, by retaining those features which do not impede 121 • water flow and by using natural materials wherever possible in new construction. Design of the project may be affected by analysis of the recently completed hydrological study of the Upper Sheldrake (West Branch) . The project will also be the subject of a specific environmental assessment. Design of the retention basin on the east branch of the Shel- drake will also be affected by the hydrologic analysis of the Upper Sheldrake drainage basin. Construction of the dam will utilize natural materials as much as possible and be designed to appear as a natural feature. The impoundment area will be left in its natural state so that, when not performing its retention function, it will not appear different from the rest of the conservation area. A site-specific environmental assessment will be performed prior to approval of final plans. 4. Wildlife, Vegetation, and Wetlands a. Setting Although roughly four-fifths of the land in the Town and Vil- lage is developed to some extent, significant wildlife habi- tats and areas of natural vegetation are located in designated • wetlands, municipally owned conservation areas and parks, and private recreational facilities. The area's entire Long Island Sound shoreline, including the Premium River and Millpond, Little Harbor Sound, Larchmont Harbor and Monroe Inlet, is designated tidal wetlands cate- gorized as "high marsh", 'boastal shoals, bars and flats", "intertidal marsh" or "littoral zone". These important ecological areas provide a habitat for fish, birds and small animals. In the northern portion of the Town, the Larchmont Reservoir- James G. Johnson Conservancy, the Sheldrake-Leatherstocking Conservation Area, the Winged Foot and Bonnie BriarGolf Clubs, and the habitat corridors connnecting them, as well as Saxon Woods Park, all include a wide range of vegetation and wild- life in the most extensive natural setting remaining in the community. b. Impact Most of the regulatory measures included in the LWRP are specifically intentded to increase the ability of the community to prevent further damage to its wetlands and habitats. Most of the proposed physical projects are de- 4111 signed to correct past damage to or to prevent future deterioration of these same areas. 122 Several of the projects could have negative imapact if not carefully analyzed and designed. Construction of the re- tention basin on the east branch of the Sheldrake River will disturb vegetation and could affect a small portion of the wildlife habitat in the conservation area. Harbor dredg- ing could affect aquatic life directly and by altering normal circulation. The combination of activities contemplated for the Premium River and Millpond could also have unexpected negative impacts; accordingly, the purpose of the planned feasibility study in that area study is to evaluate a number of interrelated activities, understand their interaction, and thereby obtain the desired benefits with the least damage. The same approach will be taken in the feasibility study for the Reservoir-Sheldrake-Leatherstocking area. c. Mitigation Each of the possible actions will be subject of a site-specific environmental assessment with particular emphasis on the im- pact of any activity on the extremely important wetlands and fish and wildlife habitats. 5. Recreation a. Setting A variety of recreational facilities serve the coastal area. Two boat clubs, two swimming beaches and six parks for pas- sive or active recreation have frontage on the Sound or its tributaries. Further inland are more athletic facilities and nature preserves. The ownership of these facilities ranges from private (members only) clubs to Village, Town and County parks. b. Impact There are few opportunities in the coastal area to create new recreational facilities, due to its essentially built-up state. The LWRP establishes policies primarily aimed at preserving existing recreational opportunities, particularly those pro- viding access to the waterfront, rather than creating new facilities. Therefore, the recreational provisions of the LWRP will have no adverse environmental impact. In fact, rehabilitation of two areas in and bordering Flint Park, partly for passive recreational use, will enhance environmental quali- ty in those locations. In providing for possible future action by the municipal governments to increase water-dependent recreational facilities 123 • and access thereto, should opportunities to do so occur, the LWRP specifies, among other things, the need to preserve the the residential character of the neighborhood and the natural and man-made environment; to mitigate the impact of increased traffic and intensity of use on adjacent neighborhoods; and to avoid adverse impact on the water environment. c. Mitigation None required. 6. Visual, Cultural and Historic Resources a. Setting The visual, cultural and historic resources of the Town and Village are extensive, including the natural beauty of Long Island Sound, the beautiful Manor Park, the historic homes in Larchmont Manor and Pryer Manor, the three golf clubs, the Larchmont Reservoir property, and the attractive residential neighborhoods in the hilly inland part of the Town. b. Impact The LWRP includes a number of measures to protect and maintain visual, cultural and historic resources. New land use regulations governing development of larger proper- ties, including the golf course areas, will require preservation of open space and natural featurs, and will subject any develop- ment to careful site plan review. Amendments to the zoning regulations affecting the Long Island Sound shoreline willsafe- guard scenic values by reducing the potential adverse impact of new buildings on views of the Sound or on the beauty of the shore- line. Future designation of specific historic and scenic resources willassure their future preservation. c. Mitigation None required. 7. Traffic and Transportation a. Setting The Town and Village are served by a regional highway system which parallels the shoreline, major streets which link neighbor- hoods as well as other communities, a commuter rail system and public bus service. b. Impact None of the actions proposed in the LWRP will impact this trans- portation system. 124 • c. Mitigation None required. D. Unavoidable Adverse Environmental Impacts No unavoidable adverse environmental impacts are anticipated from adoption of the LWRP or related legislation to guide waterfront use in accord with sound land use and environmental management practices. Specific proposed actions will be reviewed to evaluate possible impacts and will be subject to local, state and federal environmental protection regulations. E. Irreversible and Irretrievable Commitments of Resources Adoption of the LWRP will not directly cause a loss of coastal resources. To the contrary, the plan is specifically aimed at protection and enhance- ment of the most significant natural and manmade resources in the coastal area. F. Growth Inducing Aspects It is not anticipated that adoption of the LWRP will cause any significant growth. The only proposed changes in zoning and land use regulations will not • increase development densities above those now permitted. No actions are proposed which would increase the local population or tourism. G. Effects on the Use and Conservation of Energy The LWRP will not have any direct impact on the use or conservation of energy since the general location and intensity of energy-using activities will not be substantially altered. H. Alternatives The alternatives to the proposed LWRP are to have no LWRP or to change the plan. To have no plan would deprive the Village and Town of the opportunity to adopt a comprehensive guide for use and development of their coastal area and for appropriate control of actions in the area by private parties and other governmental agencies. The plan could be changed either in regard to its basic goals and objec- tives or in regard to specific actions proposed to implement the program. Due to the high quality and intensiveness of existing development in the • 125 coastal area and the seriousness and diversity of environmental issues, there were no realistic alternatives to the basic goals summarized in A. 1 above. However, alternates to some of the specific actions were proposed and are discussed below. For the remaining actions, no significant alternatives were found. a. Premium River and Upper Sheldrake-Larchmont Reservoir Feasibility Studies A variety of specific actions are proposed in the LWRP to solve problems of flooding, siltation and pollution of these two valuable resources. Each such action could be undertaken without any overall study. However, the effectiveness, interrelationship, priority, sequence and cost of possible actions require careful and compre- hensive analysis. Therefore, it was determined that a thorough feasibility study of these questions was required to chart the most appropriate courseof action in each of these two areas. b. Land Use Regulation of Substantial Areas The important role played by large areas of open space, notably the three golf courses, in flood protection and in preservation-of wet- lands, wildlife, and scenic values, suggested that it would be desirable to preserve such properties in their present state in perpetuity. However, the likely cost of acquiring these properties to guarantee that they would never be developed was considered to be prohibitive. Therefore, while the program states a clear preference for keeping the golf courses unchanged, the alternate courseof action was selected of revising the land use regulations for these and other substantial areas (5 acres or more)so as to ensure that they will continue to serve the purposes enumerated above. c. Zoning for Water-Dependent Uses Means to increase opportunities for the development of water-dependent recreational uses were considered during preparation of the LWRP. Certain such uses are permitted in the Town subject to issuance of a special permit, and existing uses in the Village are permitted to continue and expand under certain conditions. It was determined that preservation of water-dependent recreational uses was an important objective that could be achieved under existing zoning regulations and that the possible adverse impacts from new uses do not warrant changes to the zoning regulations at this time. d. Project Timetable The timetable proposed for specific physical actions (IV, Table 1 ) indicates that many can and should be undertaken simultaneously, as soon as financial and administrative capacity permits. The relative timing does not suggest priority or urgency but, rather, an estimate of the likely lead time necessary to initiate actions. It is believed that , in most cases , changes in the indicated starting dates or in relative timing would not impair the merits or effectiveness of individual projects, but care should be taken to assure that this does not happen. 126 110 APPENDICES A AND B These Appendices should be read in connection with "Fish and Wildlife Habitat Narrative" (Subsection 4 of Section II, Inventory and Analysis) and Policies 7/7A in Section III. Larchmont-Town of Mamaroneck • Local Waterfront Revitalization Program April 1985 • APPENDIX A • INVENTORY OF ANIMAL SPECIES IN FISH AND WILDLIFE HABITATS Key: P = Premium Marsh Complex H = Hommocks Marsh Complex R = Reservoir-Sheldrake Complex *Casual 1. Birds P H Common Loon P H Common Tern P H Horned Grebe P Least Tern P R Pied-billed Grebe P* Black Skimmer H Double-Crested Cormorant P H R Mourning Dove P H R-S Ring-necked Pheasant P H R Rock Dove P H R Great Blue Heron P Barn Owl P H R Green-backed Heron P Screech Owl P Cattle Egret P R Great Horned Owl P H R Great Egret P Snowy Owl P H R Snowy Egret P R Common Nighthawk H Glossy Ibis R Chimney Swift P* Yellow-crowned Night Heron P R* Ruby-throated Hummingbird P H Black-crowned Night Heron H R Belted Kingfisher P H American Bittern P H R Common Flicker • P H R Mute Swan R Pileated Woodpecker P H R Canada Goose P R Red-bellied Woodpecker P Snow Goose R* Red-headed Woodpecker P H R Mallard P R Yellow-bellied Sapsucker P H R Black Duck R Hairy Woodpecker P R* Pintail P H R Downy Woodpecker P R Wood Duck P R Eastern Kingbird P R American Widgeon P H R Eastern Phoebe P Gadwall P R Eastern Wood Pewee P* European Widgeon R Tree Swallow P Canvasback P R Barn Swallow P Lesser Scaup P R Bank Swallow P R* Greater Scaup R Rough-winged Swallow P Common Goldeneye P H R Blue Jay P R Bufflehead P H R Common Crow P R Ruddy Duck P Fish Crow P R Hooded Merganser P H R Black-capped Chickadee P R Common Merganser P H R Tufted Titmouse P Red-breasted Merganser R Brown Creeper P R Turkey Vulture H R White-breasted Nuthatch P H R Marsh Hawk P Red-breasted Nuthatch R Broad-winged Hawk P R House Wren P H R Red-tailed Hawk P Winter Wren R Red-shouldered Hawk P Carolina Wren P H R Osprey P H R Mockingbird . P H R American Kestrel P H R Gray Catbird P H R Ring-necked Pheasant P H R Brown Thrasher P Clapper Rail P H R American Robin A-1 • Inventory of Birds (cont'd) P Virginia Rail P H R Song Sparrow P H R* American Coot R Chipping Sparrow H Semi-palmated Plover R Wood Thrush P H Killdeer R Hermit Thrush • P H Greater Yellowlegs R Gray-cheked Thrush P H Lesser Yellowlegs R Swainson's Thrush P American Woodcock R Veery H R Spotted Sandpiper H* Eastern Bluebird P Semi-palmated Sandpiper R* Golden-crowned Kinglet P* Dunlin R Ruby-crowned Kinglet P Great Black-backed Gull R Cedar Waxwing P H R Herring Gull P H R Starling P H R Ring-billed Gull R Red-eyed Vireo P H R Laughing Gull R Solitary Vireo R* Warbling Vireo P H R Black & white Warbler P Blue-winged Warbler R Tennessee Warbler R Northern Parula Warbler P R Yellow Warbler P R* Magnolia Warbler R Black-throated Blue Warbler P H R Yellow-rumped Warbler R Black-throated Green Warbler • R Blackburnian Warbler R Blackpoll Warbler R Chestnut-sided Warbler R Ovenbird R Palm Warbler P H R Common Yellowthroat R Canada Warbler P H R American Redstart P H R House Sparrow H Bobolink H Eastern Meadowlark P H R Redwinged Blackbird R Rusty Blackbird P H R Northern Oriole P H R Common Grackle P H R Brown-headed Cowbird R Scarlet Tanager P H R Cardinal R Rose-breasted Grosbeak P* Evening Grosbeak R* Indigo Bunting P H R House Finch P R Pine Siskin P H R American Goldfinch P R Rufous-sided Towhee • P H R Dark-eyed Junco P R Tree Sparrow P H R White-throated Sparrow A-2 2. Land Species 3. Aquatic Species • H R Short-tailed shrew P H R Damselfly P H R Vole P H R Dragonfly P H R White-footed mouse P H Mud Snail P H R Deer Mouse P H Marsh Snail P H R Eastern Mole P H Fiddler Crab P H R Eastern Chipmunk P H Marsh Crab P H R Eastern Gray Squirrel P Horseshoe Crab (nesting) (also all black form) H R Eastern Cottontail Rabbit P H Ribbed Mussel H R Woodchuck R Naiad P H R Raccoon P H Jellyfish (comb) P H R Oppossum P H R Muskrat P H R Striped Skunk 4. Fish R Common Snapping Turtle R Painted Turtle P H Striped Bass R Spotted Turtle P H Bluefish R Box Turtle P H Porgy H Diamond-backed Terrapin P H Flounder (summer and winter) R Tree Frog P H R Eel R Wood Frog P H Blackfish (Tautog) P H R Toad P H Mackerel P H R Green Frog P H Menhaden P H R Bullfrog P H Minnows (silversides, • killifish) R Red-spotted Newt P H Alewives P H R Praying Mantis R Yellow Perch R Red Fox R Sunfish R Catfish R Carp R Shiner Note: Other important coastal species are found along the rocky shores, tidepools, beaches and harbors of Larchmont, as follows: Redbeard Sponge Mussels: Blue, Ribbed Deadman's fingers Atlantic Bay Scallop Comb and Moon Jellyfish Jingle Shell Sea Anemones Eastern Oyster Ribbon, Sand and Seaworms Cockle Starfish, Sea star Clams: Northern Quahog, Softshell, Razor ID . A-3 Sandhoppers: Amphipods Shipworm Barnacles: Rock Sea Snails: Limpet, Moon Shrimp: Mantid and Brine Slipper Periwinkle: smooth, American Lobster rough, common Crabs: Hermit, Blue, Green, Mud Snail Rock, Calico, Fiddler, Atlantic Oysterdrill Horseshoe Crab Whelk, Knobbed, Channeled A-4 APPENDIX B • SOURCES LIST FOR COASTAL ZONE HABITAT AREAS City of New Rochelle, Local Coastal Management Program, March 1980, Issues Areas: Premium Marsh, Raymond, Parish, Pine & Weiner, Inc. , Tarrytown, New York Town of Mamaroneck Conservation Advisory Commission: Annual Reports 1980, 1982, 1983; Natural Resources Inventory Map, by Clifford E. Emanuelson and Morris Bufi, revised 1977; Robert Hohberg reports, Demise of An Estuary (premium, salinity and turbidity) and Pollution (Premium and Hommocks) ; Walk Books, Sheldrake River Trails, revised 1984, Hommocks, 1979, Reservoir revised 1984 (Birds by Thomas Burke and Andrew Vallely) and Fish and Wildlife Inventories. Westchester County: Marshlands Conservancy, Birds of, Thomas Burke and Andrew Vallely; Common Ducks and Geese, Fish, Mammals, Trees, Aquatic Insects, Hawks of Westchester County. New York State: DEC Tidal Wetlands Maps, #604, 528 and 604, 530; Conservationist articles and reprints on: Tidal Marshes, An Acre of Marsh is Worth, Role in Estuarine Production, Natural Values, of Marine Wetlands: Shuster, Perry, Odum, Taormina, and "Our Changing Shoreline", Perlmutter. SUNY-Purchase: Utter and Steineck, Larchmont Harbor Ecosystems, 1972, 1973, • 1975; Morein Cohen, Trends in Sediment Accumulation in Premium, 1975. White, Robert, The Premium, An Endangered Waterway - 1977. Johnson, Mary Anne, The Premium, An Endangered Waterway: Addendum, Pryer Manor Resources, and Bibliography, 1978. Johnson, M.A. and Phyllis Wittner, Premium Marsh Complex, 5/3/83 and Bibliography. Westchester Soil and Water District: Jim Cropper, 1978 and 1980, Review of Premium River; 1982, letter and copy of "Using Dredging Spoils to Build Tidal Marshes", University of Rhode Island, School of Oceanography, August 1981. Wittner, Phyllis, Pryer Manor and the Premium River Conservation Area, Second Draft, January 30, 1980. Connecticut College Arboretum: Tidal Marshes of Connecticut, 1968, Preserving Our Freshwater Wetlands, Bulletin #17, 1970, Niering, Goodwin, Thomson and Stengel; Connecticut's Coastal Marshes, A Vanishing Resource, Goodwin, Niering, Stengel, 1961, Bulletin #12. • B-1 Hay, John and Farb, Peter, The Atlantic Shore, Human and Natural History from Long Island to Labrador, Harper-Colophon, New York, 1966; Hay, John, The Undiscovered Country, W.W. Norton, New York, 1984 (Alewives and freshwater mussels) Carson, Rachel, The Edge of the Sea, Houghton-Mifflin, Boston, 1955. McGraw-Hill, New York: Living World of Nature: Life of the Marsh, North American Wetlands, William A. Niering, 1966; Life of the Seashore, William Amos, 1966; Life of the Pond, W. Amos, 1967; Rivers and Streams. Teaching Materials from Massachusetts Audubon "Curious Naturalist" : Biomes, Water Environments and other. American Littoral Society: "Fish and Man: Conflict in the Atlantic Estuaries," John Clark, 1967 (Highlands, N.J. 07732) . U.S. Dept. of Interior, Fish and Widlife Service, "Ducks at a Distance" , Bob Hines. Golden Field and Nature Guides, Golden Press, New York Audubon Field Guides, Doubleday, Peterson. 1001 Questions Answered about the Seashore, N.J. and Jacquelyn Berrill, Dover, 1976. New Field Book of Freshwater Life, Elsie Klots, Putnam, 1966. Geology of New York City and Environs, Christopher Schuberth, Natural .History Press, 1967. Continental Collisions and Ancient Volcanoes: Geology of Southeastern New York, Educational Leaflet #24, Ingvar W. Isachsen, New York Geological Survey, July 1980. Ecology and Field Biology, Second Edition, Robert Leo Smith, Harper and Row, 1974. Headstrom, Richard, "Nature in Miniature" Knopf, 1968. Ricciuti, Ed, "Fish of the Atlantic", Hancock House, Killingworth, Connecticut, 1982; Dolan, Tom - "Know Your Fish," Sports Afield, Hearst, 1960. U. S. Army Corps of Engineers, Mamaroneck-Sheldrake Study Area: Fish and Wildlife, 2;36a-2; 40. U.S. Dept. of Housing and Urban Development, Federal Insurance Administration, Flood Insurance Maps, Town of Mamaroneck, June 15, 1979; Flood Insurance Maps, Village of Larchmont, January 16, 1984; Flood Insurance Wave Height Analysis, July 16, 1984 B-2 Maps: Westchester County Environmental Management Council, Department of Planning: Environmental Management Council, Department of Planning: Environmental Constraint Series; Nos. 14 and 15, Mount Vernon and Mamaroneck, 1982, Lower Long Island Sound Basins. Article: Regional Plan Association Annual Report, 1982-83, "Open Space." Articles: Mamaroneck Daily Times, "Nature's Trails," weekly 1966-1980, with field notes, by many local observers, naturalists and staff writers, and in addition special series 1979-1981 on 10 years of the Conservation Areas, and on Our Coastal Area, Rye to New Rochelle. Article: Federated Conservationists of Westchester County, April 1985, "Which Way Westchester 2000? - Water Resources and Development," Carol Coggeshall. Map: Calligraphy of Larchmont-Mamaroneck Waterways by Ann Gunsalus Correspondence: To Mr. Louis M. Concra, Office of Environmental Analysis, 50 Wolf Road, Albany, New York 12233, 8-9-76, comments on 7-27-76 Tidal Wetlands hearing at SUNY-Purchase about Pryer Manor and Premium Marshes and Mill Pond area. From: George Danskin, then Regional Permit Administrator, Environmental Analysis, Region 3, 10/19/76 about revisions and from Rob Greene on field check visit 10/19/76. To: Hon. Basil A. Paterson, Secretary of State Robert C. Hansen, Program Manager, Coastal Management Program 162 Washington Avenue, Albany, New York 12231, 5/4/79, Comments on GAPC 27-A-8, Westchester County map, on the Premium Marsh Complex. To: Mailgram: Secretary of State Basil Paterson, Robert Hansen, 5/7/79, addition to above comments, on erosion hazards, silt problems, flood control and ice problems. To: - Supervisor Leo Goldsmith and Members• of the Town of Mamaroneck Council, 5/6/80 to push for passage of strong Coastal Management Program at that session of the Legislature. To: Village Manager Armand Gianunzio, Village of Mamaroneck, 8/5/80, Thanks for invitation to Village Coastal Zone Study Committee meeting of 7/16, congratulations on work done on boundaries, critical flood sources outside the land boundary and proposed critical Environmental Areas, with emphasis on need for intermunicipal cooperation to reduce individual and municipal costs and maintain healthy balance of land and water uses. To: Supervisor Leo Goldsmith and Members of the Town Council, 7/9/82, for Premium River Basin Committee, concern on Tower Apartments (Garfield) EIS that adequate measures to prevent sediment • M.A. Johnson 4/85 B-3