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Feasibility Study for the Retrofit project for Hommocks Park Ice Rink 10/18/1995
. . ri------ ------- ,(.. ,--s, FEASIBILITY STUDY ., . FOR THE )16 1 RETROFIT PROJECT FOR HOMMOCKS PARK ICE RINK To VV N OF MAMARONECK , NEW YORK 1995 -. fil%‘C 01;.4e,. Oak eifY. ..44 ..; TN -:T Ig.i ,.21111q: . %.• ' ..-'M-Ft /,'7 < k , a _,.. r.,. Nth .,, - '-- A iEs_.„ kil '4, -.W.- ,.. , „ ------- i+ ' :,. i.- it. .1 „Fa!" , A, -,r,,}.. 0 .4;-...t H.) tt.,-,.,,,,i, :Ili .c ,. -)c,tOpP .1::- 1.44 11.1 - ) ' ,--, . -in 1 freue „ _,':„,:: ,.... /? ' - ,•.- :,, --vrir UKIE.0-52111614t. , . P: epared By: l.c.E. 1NDE.PENDENT CONSUL TiNG 1:---. ERS. INC 80 West County Road C. Suite 601 .. St. Paul, Minnesota 55117 Phone; 612/452-0313 File No. ; 2C3,4t. • A FEASIBILITY STUDY for the RETROFIT PROJECT for HOMMOCKS PARK ICE RINK Town of Mamaroneck, New York 1995 File No. 320395 Prepared by: I .C.E. Independent Consulting Engineers, Inc . 80 West County Road ' C' Suite 801 St . Paul , Minnesota 55117 Phone : 612/482-9313 Fax: 612/482-9558 Contact : Bradford A. Lemberg, P.E. President INDEPENDENT 80 W. County Road C CONSULTING Little Canada St. Paul, Minnesota 55117 ENGINEERS, INC. Suite 801 Bradford A. Lemberg, P.E., President PHONE:612-482-9313 FAX:612-482-9558 October 18 , 1995 Town of Mamaroneck Town Center 740 West Boston Post Road Mamaroneck, New York 10543-3319 Attn : Mr . Stephen V. Altieri & Mr. William V. Zimmermann Town Administrator Superintendent of Recreation Re : Transmittal of Report Feasibility Study for the Retrofit Project for Hommocks Park Ice Rink Mamaroneck, New York File No . 320095 Gentlemen: We, at Independent Consulting Engineers , Inc. ( I .C.E. ) are pleased to submit this Feasibility Study on the Retrofit Project for Hommocks Park Ice Rink in Mamaroneck for your review and use while determining the path to take in the future in regard to the selection of the final goal for the use of the arena facility. The basic intention of the report is to assist in determining which path - either a full time year around ice skating facility or an alternate activity facility for summer use or possibly a combination thereof - is the best to take in the long range program life of the facility. This report provides an evaluation of the overall existing indoor ice skating arena and of specific proposals for expansion of activities of the facility. Conditions of the various amenities have been addressed and recommendations have been made on each item. Also included is a preliminary "opinion of probable cost" section covering the necessary aspects to bring the total facility, including necessary features to be added to arrive at desired conditions . It should be kept in mind that the probable costs are very preliminary in nature based on experience from other similar arenas and circumstances . More accurate costs will be possible upon preparation of actual working plans for retrofit of the arena. Town of Mamaroneck Town Center 740 West Boston Post Road Mamaroneck , New York 10548-3319 Following your review of the report, we will be available to make a presentation of the report as you may desire . We sincerely appreciate the opportunity to provide this study and with to thank you and all involved for the excellent cooperation and assistance that we have received. We , at I .C.E. , look forward to working with the Town, with you and your entire staff to bring the arena to the capability of the state-of-the-art that you desire.4) / Re ectfully submi / / ' P I/ adfo `I A. Lemberg, P.E. Presid -nt 2 (cHIN \K FEASIBILITY STUDY for RETROFIT PROJECT for HOMMOCKS PARK ICE RINK Town of Mamaroneck, New York 1995 Table of Contents Transmittal Letter Table of Contents Professional Certification Part I . Introduction Page No. General Discussion 1 Part II . Retrofit Study A. Scope of Study 2 B. Alternative No. 1 - Year Around Ice Capabilities 3 1 . Refrigeration System Capabilities 4 2 . Arena Ventilation System Capabilities 6 a. Ice Resurfacer Suggestions & Recommendations 8 3 . Arena Heating System Capabilities 9 4 . Building System Study - 10 a . Possible modifications for year around ice 11 b . Review of existing Ice Floor 12 1 . )Existing Sand base floor 2 . ) Existing Refrigeration Piping 3 . )Possible Concrete floor c . Determination of possible building needs 14 1 . )Additional locker/changing rooms 15 2 . ) Spectator bleacher seating 16 3 . ) Storage Area 17 4 . ) Ice Resurfacer Room Modification 18 5 . ) Existing Rink Lighting Review 19 6 . ) Possible need for electrical backup/generator 20 7 . ) Possible Increase of Roof Insulation & Installation of Low ' E' Ceiling 21 Table of Contents Hommocks Park Ice Rink Page -2- C. Alternative No . 2 - Alternate Activity Programming - (May thru September) 22 1 . Evaluation of Ventilation and air quality forfacility use as multi-purpose arena 23 2 . Evaluation of Existing building system for multi-purpose arena use . 24 3 . Alternate floor systems for multi-purpose use 26 D. Recommendations and Opinions of Probable Costs for Retrofit of Facility for accomplishment 27 1 . Alternative No. 1 28 2 . Alternative No. 2 29 E. Impact on Operating Costs for : 31 1 . Alternative No . 1 32 2 . Alternative No. 2 33 Part III . Study Conclusions Part IV. Project Recommendations Part V. Appendix A. Existing Facility Layout B. Proposed Facility Expansion Layout C. Direct & Indirect Refrigeration Descriptions D. Co-Generation Power, Article PROFESSIONAL CERTIFICATION I hereby certify that this plan , specification or report was prepared by me or under my direct supervision and that I am a duly registered Professional Engineer under the State of New York. `�N►uu►► uurn ,#,� OF NE1 $ i'Oo 1:;;;:‘ S viti 0.14E1 m .5. to irs. Br :'for.' Ainu►►p,`''- .erg Reg. No. 066532 Date : October 18 , 1995 ■ PART I - INTRODUCTION Ice Skating , including hockey, figure skating and recreational skating , has been an important part of the Town of Mamaroneck Recreation Department for years . More recently, a sport court plastic surface floor system has been utilized over the sand floor of the arena to provide rollerblade use in the arena during summer months . This usage has been somewhat successful , however; with the non-air conditioned conditions within the arena, this does not always provide a desirable atmosphere for skaters . Hommocks Park Ice Rink was built in 1988-89 and was designed basically as a six month per year ice facility. It has , however , been operated for the past several years as an 8 month per year ice skating facility. Several questions have been raised on the facility such as - Can the facility provide year around ice skating? What modifications may be needed on the refrigeration system and the building? What alternative activities can the facility support? and others as noted in the table of contents . Independent Consulting Engineers , Inc . ( I .C.E. ) was engaged , to provide professional services for a study of the facility in July, 1995 . I .C.E. was to study the arena and provide conclusions and recommendations on these questions . This report provides an evaluation of the two alternatives requested - 1 . Year around ice capabilities and 2 . Alternate Activity Programming - for this arena . The report also covers several internal items to clarify and verify the final conclusions and recommendations . It also includes "Opinions of Probable Costs" on the various items as a • part of the overall study. It should be kept in mind that the costs shown are very preliminary in nature and are based on rough sketches , preliminary thoughts and experience from other similar projects . More accurate costs can be determined after schematic design drawings are completed. Hommocks Park Ice Rink Page -1- °I .C.E. , Inc . 1995 PART II RETROFIT STUDY A. Scope of Study It is the intention of the study to provide an analysis of the Hommocks Park Ice Rink for the two basic alternatives as noted in Part I . - Year around ice capabilities and Part II . - Alternate Activity Programming . As a part of these two major items , the study looks at the capabilities of the refrigeration system, the ventilation system and arena heating . It also includes a review of the most important building aspects such as the ice floor , locker rooms , seating for spectators , rink lighting and several other applicable features that are all important to the efficient working of the arena. It is important that whichever alternative is selected as the final path to take as to the desired overall usage of the facility that the local, state and national building codes be strictly followed . It will be necessary to work closely with the local building code enforcement officers to determine all potential needs at the time of final retrofit. The existing building is basically a pre-engineered metal building constructed for housing an ice skating rink. The building presently does not contain a fire sprinkler system. It would normally, for this use, be classified as a Type II - AZ .1 occupancy facility, under alternative multi-purpose use, it would normally fall into Type II - A3 occupancy and will require_ the installation of a fire sprin1le system When used as both an ice skating rink facility and a multi-purpose activity facility it will be necessary to install a "dry-pipe" sprinkler system to allevate any possibility of pipe freeze-up during ice skating times . Opinions of probable costs for the installation of this system is included in Part II - Section D of this report. Hommocks Park Ice Rink Page -2- °I .C.E. , Inc . 1995 B. Alternative No. 1 - Year Around Ice Capabilities The ability of an arena or ice skating facility to support year around ice skating activities is dependent on many different factors . This part of the report provides a narrative on existing facilities and discussions on possible modifications to accomplish good , efficient and operable year around ice skating with an emphasis on efficiency, both from an energy standpoint and for management purposes . If year around ice skating is provided, it must be such that patrons can expect to have good, safe and comfortable accommodations and also the arena owners must be able to realize this as being economically feasible. Each item discussed is important to the the year around ice skating proposal and should be carefully considered before final decisions are reached as to a possible retrofit project. Also it is important to understand that, while each item is individually addressed , all items tie together to make a fully coordinated and comprehensive solution . Hammocks Park Ice Rink Page -3- ©I .C.E. , Inc . 1995 1 . Refrigeration System Capabilities The existing refrigeration system is already somewhat undersized for the present operation The system is an indirect refrigeration system utilizing R-502 freon as the primary refrigerant and ethylene glycol as the secondary cooling liquid . Part C of the Appendix provides descriptive material on indirect and direct refrigeration systems . The existing refrigeration system was manufactured and installed by Burley Ice Rinks and consists of the following basic components : a . Four ( 4) 50 H.P. Copeland Compressors (Model 8PPI-5000TSK) b . One ( 1) horizontal air cooled condensor ( cooling tower Century Refrigeration PFC-150) with twelve ( 12) 1 H.P. fan motors c . Two ( 2) 15 H .P. ethylene glycol circulation pumps Armstrong - manufacturer d . One ( 1) 1 .5 H.P. subsoil heat pump This system has the capability of producing a maximum of approximately 90 ton of refrigeration . The system is so designed that the lead/lag on the compressors cannot be changed therefore the wear and usage on the compressors vary since No . 1 always comes on first, and then the remainder come on as needed, always in the same sequence. The two expansion valves are each rated at 45 ton , for a total of • 90 ton , and the test pressures are: Highside - 400 and low side -150 . This system is running at maximum capacity at present to provide 8 month ice and with the compressor ratio over 5 , the compressors are working at a point that they will wear out more rapidly than originally anticipated or planned . This type of system, in the ice rink industry, is quite commonly and not in a demeaning way , known as a "throw-away" system as compared to one which uses industrial type compressor systems . This means that the system components are lighter duty than other systems and if burnout occurs , they are simply thrown away and replaced , as opposed to normal maintenance of industrial type units . The expected life cycle on a system of this design is Hommocks Park Ice Rink Page -4- ©I .C.E. , Inc . 1995 approximately l0 years, whereas the life cycle on the heavy duty industrial----type equipment is normally 25-30 years or more. Since the existing system is now being utilized for a somewhat expanded season , greater than originally anticipated , more wear can be expected and therefore the life of the units shortened. he system, as presently existing , is n _.readily expandable to provide additional capacity needed for the proposed 12 month ice skating season.-7 The refrigeration system, as existing and with7 the existing building condition , is at maximum capacity to ' provide ice during the winter season which normally starts on / Columbus Day (early October) and runs through April (approximately 64-7 month season . ) Refrigeration requirements for 12 month ice, in an arena such as this , are 120-135 ton . This would require adding between 30-35% capacity to what is existing . In this case, it would be best to sell the existing refrigeration package as used equipment, and put in a new system of sufficient capacity. l This will also apply to the condensor system. It will be necessary to replace the small existing unit with a water-cooled ' condensor of sufficient capacity to allow summer operation of the ice system. A properly designed and utilized refrigeration system has 11 additional capabilities that can be off significant value to a total sports complex without additional operations costs . A very good example is that of capturing the waste heat that is given off from the refigeration compressors and utilizing this commodity, that is normally discharged into the atmosphere, and using it for such things as supplimental heat for a swimming pool , for supplimental office and other space heating and for heating a snow melt pit in the arena complex. The capture of this heat can provide a long term cost saving if done ' efficiently. Two basic refrigeration systems are available . An indirect system - somewhat the same in operation as the existing system and secondly - a direct refrigeration system. Section C. of the Appendix describes and gives the reader a simple comparison of the two systems . Hommocks Park Ice Rink Page -5- ©I .C.E. , Inc . 1995 2 . Arena Ventilation System Capabilities Arena ventilation , including dehumidification , is a very important operational item in an ice arena due to the affects on both the ice quality and on skaters and spectators . It is extremely important that proper air quality be maintained at all times . As a part of this study, the "Feasibility Study for Dehumidification System" prepared by the WBA Group, Inc . and G.D. & D. Inc . , dated September 6 , 1991 , has been reviewed and found to be quite accurate . A few comments noted herein would make some recommended changes to that report. (It is recommended that the noted report be incorporated with the present study since some of the airduct revisions that were recommended in the 1991 report have been made . ) We would take exception to the statement on page 14 ( last paragraph) which reads as follows : "The existing ventilation system ( two 10 , 400 C.F.M. wall exhaust fans) should not be turned on as long as there is ice in the rink. The problem of condensation and fog cannot be solved by ventilation because the introduction of outside air only aggravates the problem when the weather outside is mild and humid." It is necessary to run the ventilation system any time the ice resurfacer is in operation to remove the detrimental carbon monoxide fumes given off by the gasoline engine , since these fumes will hang approximately 30-36" above the ice sheet and will cause nausea and other possible health effects, especially on the young skaters , if not removed. Some states now have very strict air quality standards for ice arenas and it is assumed that these standards will soon be adopted by all states . The major factor that requires careful and positive ventilation in an ice arena is the ice resurfacer , if the driving force is • either a gas or propane operated engine. The fumes given off by a gas engine ( carbon monoxide - CO) or a propane engine (Nitrogen Dioxide - NO2 ) are very dangerous to skaters , spectators and arena staff members . To help the ventilation system efficiency, the fresh air intake should be directed down to approximately 14" above the floor . This will then provide a full "air sweeping" effect and rid the arena of noxious fumes . In so far as dehumidification, the 1991 report is correct in stating that dehumidification units are required . It has been found in several other arenas of the same size that two ( 2) self- contained 10 ton +/- units will normally be required to provide the necessary dehumidification capacity. The town installed Hommocks Park Ice Rink Page -6- °I .C.E. , Inc . 1995 dehumidification equipment after the 1991 report. This should now be tested to determine the adequacy of the existing system under normal summer ice conditions . Hommocks Park Ice Rink Page -7- ©I .C.E. , Inc . 1995 a.Ice Resurfacer Suggestions & Recommendations The existing ice resurfacer is an older Zamboni , model HDB, that is powered by a gasoline engine equipped with a catalytic converter . A gasoline engine driven resurfacer will discharge carbon monoxide (CO) fumes that must be removed from the arena, by proper ventilation means , to avoid harmful effects on skaters , spectators and on the arena staff . A resurfacer driven by a propane operated engine normally puts out nitrogen dioxide fumes (HO2) which are extremely detrimental to human lungs and can and does cause permanent lung damage. For this reason , it is very important to properly ventilate the arena and also the keep the engine carbonation system on the resurfacer in proper adjustment. It is understood that a new resurfacer is contemplated in 1996 . It is strongly recommended that consideration be given to the purchase of an electric resurfacer . These are now available from Zamboni and from Olympia. This would alleviate the need for some of the recommended ventilation changes . Also, some electric companies are now giving rebates for assistance in acquisition of an electric resurfacer since it reduces the electrical energy needs for the ventilation system. Hommocks Park Ice Rink Page -8- °I .C.E. , Inc . 1995 3 . Arena Heating System Capabilities The existing arena heating system has been successful in keeping the arena at the desired temperature in the winter season. Additional general heating is th efore not necessary for year around operation of the arena. t is also recommended that the arena portion of the building be kept at a temperature of not more than 50°F. Some recommendations made in the previously mentioned 1991 report have been implemented to alleviate detrimental air currents over the ice sheet. Such modifications are an indication that the Town is moving in the right direction to achieve operational efficiency. Gas-fired infra-red heating over the spectator area is recommended in lieu of the forced air heating since this is more energy efficient and can also be properly directed to those areas where heat is desired and thereby help eliminate detrimental affects on the ice sheet caused by force air heat currents . This will also increase the energy efficiency of the ice refrigeration system by reducing the cooling load . A carefully designed and coordinated heating system utilizing both the present forced air heating system combined with an infra-red system will provide the most efficient and comfortable conditions possible in the arena. It is recommended that either air conditioning be considered for the offices and team rooms , for summer operation, or provide for drawing the cooler air from the arena through these rooms to provide staff and skater cooling in the service areas of the arena . Hommocks Park Ice Rink Page -9- °I .C.E. , Inc . 1995 4 . Building System Study Several important items must be considered when anticipating a change in arena operations to include a full 12 month ice skating program. In addition to the refrigerated system changes and the ventilation and heating items previously discussed, there are several other items that should be addressed. The following section - 4a . through 4e. - provide information and needs on each of the necessary items . These are considered to be essential for efficient operation of the arena on a year around basis for ice skating . Hommocks Park Ice Rink Page -10- ©I .C.E. , Inc . 1995 a . Possible Modifications for Year Around Ice Use The essential items for year around ice at the Hommocks Park Ice Rink , in addition to the necessary revisions to the refrigeration system and dehumidification/ventilation systems , are : Change of refrigerated floor 2 . Possible modifications to building shell to improve insulation factor and add a low emissivity ceiling to re uce effects of the infra-red sun rays . 3 . Possible addition of more locker/changing rooms to accommodate more skaters and also to allow better scheduling and management of the facility. 4 . Additional storage areas 5 . Possible future arena modifications to provide additional energy savings . 6 . Possible need for a backup electricity source due to high electrical usage in the area during summer months . Each of these items is covered in more detail in the following sections . Hommocks Park Ice Rink Page -11- ©I .C.E. , Inc . 1995 b. Review of Existing Ice Floor The present ice rink floor is a Burley System. This is basically a modified mat system made up of small diameter plastic tubing laid in sand. Ethylene glycol is pumped through the tubing to provide refrigeration to the ice sheet. This system does not have sufficient capacity to provide 12 month ice. Various methods are available whereby the ice sheet floor can be modified to provide year around ice skating . 1 . Existing Sand base floor As noted above , the existing floor is a sand base and is basically designed for ice skating. Summer use of the arena for rollerblading has been made possible by the installation of a plastic tile system by Sport Court that, while somewhat wavy, due to some instability of the dry sand base, does allow such uses as rollerblade skating. Since there is some shifting of the sand base, this floor is not the best system for multi-purpose uses nor will it support some uses such as vehicular traffic . 2 . Existing Refrigeration Piping The present piping system is made up of small diameter (approximately i"i .d . ) plastic tubing due to friction loss, placed at 14" on center. The diameter of the tubing limits the quantity of coolant flow that can pass through the system to provide rink cooling The normal indirect floor refrigeration systems utilize 1"-1i" inside diameter plastic tubing at 3" on center, thereby providing a greater coolant flow capacity. The present refrigeration/floor system includes a sub- soil heating system for frost depth control . This should remain in place to prevent detrimental frost buildup below the ice floor that would eventually cause uneven heaving of the ice sheet. To accommodate the refrigeration needs for year around ice, the refrigerant piping will require modifications to allow a greater quantity of cooling liquid to be passed through the floor . This will require removal of the existing tubing and replacement with larger diameter tubing to keep the pumping ratio at an efficient rate. 3 . Possible Concrete Floor At the time of revising the floor piping, considerations should be given to making this a concrete floor in lieu of the sand floor . This would stabilize the piping and also provide a solid, multi-purpose floor that will support a multitude of possible uses in addition to Hommocks Park Ice Rink Page -12- °I .C.E. , Inc . 1995 supporting a very good ice sheet. This would provide a flexibility for the arena to insure many uses and therefore increase revenues even if the ice skating was not a year around activity. A concrete floor would provide a more stable surface for rollerblading and other uses . It would also increase the life of the Sport Court system and enable the floor to provide the quality of roller blade skating anticipated. Hommocks Park Ice Rink Page -13- ©I .C.E. , Inc . 1995 C. Determination of Possible Building Needs In reviewing the arena building, both during the on-site visit with arena staff , and in the study of the plans of the existing facility, several possible needs were noted that would make the arena more efficient, both for energy use and management and provide additional items to better serve the arena users and staff . This section of the report looks at: 1 . Additional locker/changing rooms 2 . Spectator bleacher seating 3 . Storage Areas 4 . Ice Resurfacer Room 5 . Rink Lighting 6 . Possible electrical backup/generator 7 . Arena roof insulation increase and Low ' E' ceiling installation . Each of these items is important for an efficiently run ice arena to help in providing the services desired by the users and to make the facility more efficient for management. Hommocks Park Ice Rink Page -14- ©I .C .E. , Inc . 1995 1 . Additional Locker/Changing Rooms At present, the arena building includes two ( 2) locker/changing rooms for hockey team dressing . General skate changing, for recreational skating , takes place in other designated areas. It was originally in the general lobby/concessions area, but has recently been moved to a different location and has alleviated the lobby congestion problem. The arena only provides two ( 2) ( team) locker/changing rooms at present . Both of these team rooms enter the ice area at the same point . Neither team room has toilet or shower facilities . The minimum number of team rooms for an efficiently run ice skating arena is four ( 4) . This will allow two teams to be on the ice while two more teams are dressing . This will then eliminate lost ice time since teams 3 and 4 can go onto the ice immediately following teams 1 and 2 rather than waiting for changing times . This will also provide security for the clothing and equipment left in the changing rooms by the teams or skaters on the ice . In this day and age of gender equity, it is advisable and recommended to have at least six ( 6) rooms for teams . This will provide extra space necessary to that girls teams and boys teams are not intermingling . Newer facilities provide a toilet/shower area between each two team rooms , designed with door/lock systems to allow usage separately by each team but yet provide the necessary security. As the skating teams in local high schools increases , it is advisable to provide storage rooms off at least some of the team rooms so that regular users can leave their gear in secure storage and not have to carry all their equipment in and out of the arena at each visit. It is also advisable , due to the increased interest in figure skating , to provide a figure skaters warmup/dressing room, complete with exercise ballet bar and mirrored wall . Also a viewing window onto the ice sheet provides more efficient time usage when figure skaters can see when their turn comes up during competitions . It is recommended that a minimum of two ( 2) and preferably four ( 4) team rooms and a figure skaters room be added to this facility. Hommocks Park Ice Rink Page -15- ©I .C.E. , Inc . 1995 2 . Spectator Bleacher Seating Hommocks Park Ice Rink has sufficient space for spectator bleachers , however, at present it is quite lacking in actual bleacher seating . Only a very limited amount of seating is available on small, portable aluminum bleacher units . ' Aluminum or metal bleacher seats are always uncomfortable in an ice arena since they are "cold" to sit on . Both existing units and new units should be fitted with wood, fiberglass or plastic bench covers to improve user comfort. With the available space, this arena could very well be furnished with many more good bleacher seats and thereby provide additional seating for hockey games and figure skating shows . Accordian ( telescoping) type bleachers with wood seats would provide excellent seating for skating events and would also allow pushing back of the bleachers when the arena building is to be used for multi-purpose events . The facility should provide between 800-1000 seats for efficient usage of the arena and also increase possible revenue when utilized for "paid for seating" events . Hammocks Park Ice Rink Page -16- ©I .C.E. , Inc . 1995 3 . Storage Areas The arena, as presently existing , has very limited space for storage of equipment and other necessities connected with a multi-pupose arena or a year around skating facility. Storage areas should be added to provide space that is sorely needed by the management team. As previously mentioned , at least two ( 2) of the locker/team rooms should have equipment storage space for use by local high school teams or other teams that contract for regular use. Storage areas should also be provided for ice equipment such as hockey goals and dasherboards and for such things as the rollerblade flooring, indoor soccer equipment and many other items . This will also clean up the visual appearance of the arena and allow the staff to efficiently clean the facility on a regular basis . Hommocks Park Ice Rink Page -17- ©I .C.E. , Inc . 1995 4 . Ice Resurfacer Room Modifications The existing ice resurfacer parking/storage room is only 12 ' 6" x 24 ' 8" (approximate) . The room does not have an indoor ice melt pit for disposal of ice shavings from the rink . It is therefore necessary to dump the resurfacer outside after each resurfacing . As in any arena where outside dumping is utilized , it is impossible to remove all sand , grit and dirt from the tires of the resurfacer . This material then is tracked onto the ice sheet where it causes dirty tracks and also is detrimental to good ice making since the dropped material is normally dark in color and M will absorb heat causing soft spots in the ice . The dirt and c- grit is also detrimental to good ice skate blades and can cause , `ou `' nicks and dulling of the blades . �N J ' A good, drive-over snowmelt pit is recommended to be built in the , `� ,� resurfacer room utilizing waste heat from the compressors for melting the snow. Over a period of time this unit will pay for100 ; ) ; itself in better ice and less lost time for the ice rink manager . Hommocks Park Ice Rink Page -18- °I .C.E . , Inc . 1995 5 . Existing Rink Lighting Present rink lighting is provided by five ( 5 ) rows of nine ( 9 ) 400 watt metal halide lights . These are single ballast fixtures and do provide good lighting for the ice rink . These lights also provide lighting for the bleacher areas . The only means of changing the lighting level is by turning off some units . This will cause some uneven lighting and shadows on the rink . If , in the future, a newer more energy efficient system is desired or considered a system is available using a lesser number of fixtures - 1000 watt metal halide units with dual level ballasts - that allows all fixtures to remain on but at a lower energy usage and a lower light output . This will still provide even lighting over the entire rink and also provide a considerable electrical energy saving for times of recreational skating and figure skating practice when the higher level lighting for hockey safety is not necessary. Hommocks Park Ice Rink Page -19- ©I .C.E. , Inc . 1995 6 . Possible Need for Electrical Backup/Generator During summer months when electrical usage is very high in demand due to area and regional air-conditioning needs , the arena may experience "brownouts" which would be detrimental to keeping good summer ice . Several arenas have provided their own electrical generator backup facilities to insure an even electrical supply at all times . There have been a few cases when arenas have installed co-generator units and have been able to supply additional power to the electrical company, thereby generating an additional income for the arena. (See article in the appendix. ) This matter should be carefully studied by a local electrical engineer who is well versed in this type of system and it should also be seriously discussed with the local power supply company. Hommocks Park Ice Rink Page -20- ©I .C.E. , Inc . 1995 7 . Possible Increase of Roof Insulation & Installation of Low 'E' Ceiling The existing roof insulation is minimal in comparison to most ice arenas . The present insulation is a metal roof and approximately six ( 6" ) inches of fiberglass which provides an R-Value of R-19 . Normal new design today provides an insulated roof section of up to R-38 or more . This would double the insulation capacity of the roof . Normal n w design today rovides an insulate ' roof section f7'up to R-3 or more . Thi would double the ' nsulation capacity of the r of . It is also strongly recommended that a "low ' E'" - low emissivity - ceilina__be installed to reduce the infra-red effects of the sun. The low ' E' ceiling provides two advantages . First, it cuts down the infra-red infiltration_ through the roof . Experience has shown that this feature- will reduce the energy costs of the refrigeration system by 25-30% . Secondly, the low ' E' ceiling increases the light reflecti_v_ity_...within the arena and thereby increases the efficiency of the lighting as well as spreading the light more evenly across the ice sheet. If properly installed this system can provide a good vapor barrier to protect the roof structure . This system is normally a silver/white in color and therefore provides a lightening affect within the arena . The good systems are made to be "puck safe" and will withstand the force of a flying hockey puck. These additions are extremely important to the economic feasibility of operating a summer ice program. Hommocks Park Ice Rink Page -21- °I .C.E. , Inc . 1995 C . Alternate No . 2 Alternate Activity Programming - (May thru September) An arena such as the Hommocks Park Ice Rink has the capabilities and potential of providing a multi-purpose facility that is only limited by the imagination of the staff and others responsible for its management . New facilities today are designed not only for all types of ice skating activities , but also for such things as conventions , large community dinners and dances , indoor tennis , indoor soccer, spring batting practice and pitching practice for softball and baseball , golf driving practice, antique car shows , boat shows , RV shows , antique shows , flea markets and the list goes on . Some are even used for rodeos . The facility can be utilized for these extra events only if the building is designed to allow for these activities . The following sections of this study/report provide an evaluation of the present building in relationship to these needs and also recommendations and anticipated costs to retrofit the facility for this purpose. Hommocks Park Ice Rink Page -22- °I .C.E . , Inc . 1995 1 . Evaluation of Ventilation and Air Quality for Facility Use As Multi-Purpose Arena The present ventilation system in the Hommocks Park Ice Rink _____7 provides a good exchange of air that is basically sufficient for most possible activities that may be scheduled in the facility. For summer usage , basically May through August , for activities other than those which are ice related , the building can become quite uncomfortable , since there is no cooling or air- conditioning . To provide an atmosphere conducive to good attendance at multi-purpose activities or events , it is essential that some means of controlling indoor temperatures be provided for the entire facility. Previous sections of the report indicated that for good summer ice usage , the team rooms , lobby, office areas should be cooled with air-conditioning units . This will be an essential requirement if the entire arena is to properly provide for the multi-uses that may be considered. There will be some days that it can be used simply by circulating the air . On most summer days , it will be necessary to control the temperature of the interior of the entire facility by cooling . This can sometimes be accomplished by running the floor refrigeration system, however , this is not an efficient or reasonable means of providing the necessary cooling since the floor refrigeration system is not designed to cool air in the facility but rather to cool and freeze water by contact . It is therefore recommended that if the building is to be used for multi-use events , other than ice related, that air- conditioning be added to the existing heating/ventilation system. Hommocks Park Ice Rink Page -23- ©I .C.E. , Inc . 1995 2 . Evaluation of Existing Building System for Multi-Purpose Arena Use The existing building was constructed approximately 7-8 years A ago . Since that time, energy costs have increased and the state- of-the-art arena design has changed significantly. The present roof structure is insulated with only 6" of fiberglass giving it an R-Value of R-19 . Present day designs for arena roofs are as high as R-38 or twice as efficient as presently existing . Whether the building is to be used for ice related activities or any of the many multi-purpose uses , it is quite important to make the building more energy efficien For this reason, it is strongly recommended that the entire building envelope be re- assessed as to increasing insulation_fa� rs for year around use. A low ' E' ceiling systems should be considered to reduce the infra-red affects of the sun and also to increase the reflectivity of the ceiling to increase the lighting efficiency. _Majorentrances should be revised to provide "airlock" type entries to increase efficiency of either heating or cooling within the building . Ventilation should be carefully controlled_ during all seasons to assure meeting good air quality standards and to cut down on excessive amounts of outside air being brought into the entire facility. The building interior should be analyzed by an interior decorator , as to colors , etc. to make the facility light, bright and exciting for all types of activities . If the arena is to be used for banquets , conventions and many • other activities , the facility should be analyzed for acoustical treatment to maximize such uses without the difficulty of negative reverberation . The sound system should be improved to allow for clarity of sound, both in speaking levels and music levels , for comfortable and adequate usage for all events . A completery-pipe" fire sprinkler system should be installed in the building, if it is to be safely used for these multi- purpose uses or events , to properly protect the safety of the users . By making these studies and changes , this facility can be used by the entire population for all kind of events and the Hommocks Park Ice Rink Page -24- ®I .C.E. , Inc . 1995 participation will increase tremendously if the public , when participating , finds it to be a pleasant experience. Hommocks Park Ice Rink Page -25- ©I .C.E. , Inc . 1995 3 . Evaluation of Floor Systems for Multi-Purpose Use The present arena floor is loose sand that contains the floor refrigeration tubing . During the summer months a plastic tile system - SPORT COURT - is layed on the sand to provide a surface for rollerblading . This ja.as_ been somewhat successful but far from a good surface since it tends to be soft and visually appears to be wavy) On a dry, loose sand base this system does not accomplish its full value and is not suitable for any vehicular traffic or other activities since it is not sufficiently supported by the loose sand. This system is very good on a solid concrete base and will then perform as intended by its manufacturers , since it will take all types of loading and still provide an excellent surface for rollerblading . To allow for most activities , other than ice skating and the 7 present rollerblading use, it will be necessary to install a floor that l wilcarry necessary loads and also provide a smooth , level surface that will support all uses . Other floor systems such as wood , heavier plastic and other combination boards are available , however all are questionable on life cycle and on first cost. Also, each takes considerable storage space when not in use. It is highly recommended that a good quality concrete floor be designed and installed that will not only provide protection for refrigeration piping , but will support all anticipated multi- purpose uses . This floor should be fitted with inserts for tennis net posts , volleyball posts , and all other possible uses . Only by providing this type of floor can the arena be utilized to maximum potential . The building , if properly retrofitted , can provide such activities as a very simple jogging track around the rink area . This track can also be utilized as a senior citizen or a heart patient walking area. Use such as this can be extremely beneficial to many residents that would not otherwise utilize the facility. This is an important activity that many look for for health sake alone . D. RECOMMENDATIONS & OPINIONS OF PROBABLE COSTS FOR RETROFIT OF FACILITY A major part of the study of the Hommocks Park Ice Rink are the recommendations and opinions of probable costs developed for the proposed retrofit of the arena. These recommendations and costs are provided for the two following alternatives . Hommocks Park Ice Rink Page -26- ©I .C. E. , Inc . 1995 Alternative No. 1 To Provide for Year Around Ice Capabilities Alternative No . 2 To Provide for Alternative Activity Programming for the summer period - May through September The recommendations are based on the preceding compilation of information . The Opinions of Probable Costs are preliminary in nature and are based on experience on similar projects and on costs obtained from various contractors and other reliable sources . I Hommocks Park Ice Rink Page -27- ©I .C.E. , Inc . 1995 1 . Alternate No. 1 To Provide for Year Around Ice Capabilities The following retrofit items are recommended for adoption to provide the Hommocks Park Ice Rink with the capability of ensuring a good , year around , efficiently operated ice skating facility that will offer the services to ice skaters that are needed to make skating at the arena a pleasant experience and also to provide the quality of facilities that are needed to make this venture realistic for management efficiency and to be economically feasible . The listing shows the recommended retrofit items and the preliminary opinions of probable cost to accomplish the retrofit : Opinion of Item Probable Cost a . Refrigeration System Expansion- Utilizing present equipment and adding additional equipment to increase capacity from 90 ton to 120 ton $ 45 , 000 b. As an alternate - To replace exist- ing Refrigeration System with new equipment package to provide 120-135 ton capacity ( Including sale of existing refrigeration package) $200, 000 c . Replacement of condensor to provide sufficient capacity $ 40 , 000 d . Install three ( 3) rooftop, manually operated ventilation exhaust fans and modify fresh air intake $ 10 , 000 e . Replace existing gas operated Zamboni ice resurfacer with new electric re surfacer. (Recommend keeping existing as backup unit . ) $ 70 , 000 f . Install gas operated infra-red heating system over bleacher area $ 40 , 000 g . Install air conditioning units for lobby, team rooms & offices $ 15 ,000 h . Replace ice rink floor piping in sand base to provide sufficient cap- acity for year around ice . $120 , 000 Hommocks Park Ice Rink Page -28- ©I .C.E. , Inc . 1995 i . As option install new rink floor piping and concrete floor in lieu of sand floor $220 ,000 j . Installation of additional roof in- sulation to increase to R-38 and also add low ' E' ceiling in arena area $100 ,000 k . Add a minimum of two ( 2) additional team/locker rooms $ 68 ,000 1 . In lieu thereof , add four ( 4) add- itional team/locker rooms to provide for gender equity $134 ,000 m. Add multi-purpose figure skating, dressing and meeting room $ 35 ,000 n . Add new accordian type bleachers to provide up to 800 seating capacity $ 72 ,000 o . Add storage areas both for management storage & hockey team equipment stor- age $ 16 ,000 p . Modify ice resurfacer room and add snowmelt pit with waste heat system for melting coil $ 15 , 000 q. Add backup generator to provide pos- itive power source in event of power shortage or shutdown $ 60 ,000 The preceding items can, if necessary, be phased over 2-3 years . • Those items marked thus (*) are imperative for first phase retrofit of the arena to provide year around ice . The upgrade of the present refrigeration system equipment to provide year around ice as noted in a. is possible since the addition of more compressor capacity will actually extend the life of the existing units by allowing rotation of use of the equipment and thereby letting each part to rest occasionally. The condensor unit, noted in c. , must be replaced to provide summer ice since it cannot be expanded . Replacement of the rink floor , as noted in h. is necessary to provide year around ice capacity. A new, properly designed and constructed floor would have an expected life of at least 30 years . Hommocks Park Ice Rink Page -29- ©I .C.E. , Inc . 1995 2 . Alternate No. 2 - To Provide for Alternate Activity Programming To allow alternative activity programming at the Hommocks Park Ice Rink , May through September , the following recommended retrofit items are necessary to ensure that a comfortable atmosphere is provided that will attract users and activity participants to make this an economically feasible program. Opinion of Item Probable Cost a . Install air-conditioning in the arena portion of the building $150 , 000 ** b. Install air conditioning in lobby and office areas $ 10 , 000 c . Install additional roof insulation and Low ' E' ceiling in arena $100 ,000 d. Install entry "airlock" door system $ 5 , 000 e . Brighten the interior of arena by painting and decorating $ 15 ,000 f . Install acoustical treatment within arena area $ 30 , 000 g . Install concrete floor in rink area provide sufficient strength and sur- h p� �� face for multi-purpose use e-- ,`Ak - n'� $220 ,000 ** h . Installation of fire sprinklersystem in the total building $ 60 , 000 ** ,1. „t/ It is easily seen that the necessary retrofit of the rink facility is much less for this alternative, however , this limits the total multi-purpose use of the arena to only non-ice activities . Items marked thus (** ) are felt to be essential for utilizing the facility as a true alternate activity arena that would be economically feasible to operate . Without a proper , multi- purpose floor and without the atmosphere providing compatible conditions for users . The facility would be hard pressed to attract sufficient users to gain sufficient revenue for management and operation . Hommocks Park Ice Rink Page -30- ©I .C.E. , Inc . 1995 E. IMPACT ON OPERATING COSTS For each of the two retrofit alternatives : No . 1 - Year Around Ice Capabilities No. 2 - Alternate Activity Programming there are impacts on operating costs that include both energy costs and also management costs . This section of the study focuses on changes in energy cost since the retrofit needs are for providing activities not presently offered. Staffing and management costs are most efficiently determined by "in house" staff study based on the anticipated scheduling and operation, best known by the present operators and directors of the facility. It must be kept in mind that several of the proposed additions or changes will increase energy usage when providing additional services to the residents of the area, however , it will also be necessary for the staff to determine the anticipated revenue increase based on projections of use of the expanded facilities . It must also be kept in mind that some of the proposed additions , alternatives and retrofit, if undertaken , will increase operational efficiency of the facility and therefore provide for increased revenues that must be balanced against the expenditures . Hommocks Park Ice Rink Page -31- °I .C.E. , Inc . 1995 1 . Operating Cost Impact - Alternative No . 1 Year Around Ice Capabilities Each item proposed under this alternative will have an operating cost impact . Several can be estimated based on energy costs . Other , whether they are positive or negative, will depend upon management . Those items that will affect operating costs due to energy requirements alone are : Item Anticipated Impact a . Increase Refrigeration Capacity for year around use. Basically the extra energy cost for summer . (May through September) $ + 30 , 000 b . Operation of air-conditioning for lobby, team rooms and offices $ + 1 ,000 c . Installation of additional roof in- sulation and Low ' E' ceiling . (Based on anticipated year around ice oper- ation savings of 25-30% $ - 12 , 000 to 15 , 000 ( saving) d . Addition of two ( 2 ) or four ( 4 ) team bleacher rooms This can be an add of 1 operations cost, however , it can also greatly increase revenues due to more efficient operations and greater facility usage. e . Addition of Bleachers This can provide an increase in revenue if used for spectators for hockey games and figure skating shows wherein admission is charged . Hammocks Park Ice Rink Page -32- ©I .C.E. , Inc . 1995 f . Modifications in Ice Resurfacer room This can be a plus since it can increase management and ice quality and efficiency. g . Installation of backup generator for electrical power While this will be an operating cost it also provides for a positive value since it would ensure having ice availability at all times . 2 . Operating Cost Impact - Alternative No . 2 Alternate Activity Programming Each of the items listed for this alternative, while having some operational costs involved , (basically cost of operating full air conditioning) will provide a much expanded activity program that can significantly increase revenues . Cost of management must be balanced against the anticipated increased revenues by staff . The addition of a concrete floor, containing the ice refrigeration piping, will be a very positive addition to either alternative since it provides a true "multi-purpose" arena. Hommocks Park Ice Rink Page -33- cI .C.E. , Inc . 1995 PART III - STUDY CONCLUSIONS In doing the retrofit study for the Hommocks Park Ice Rink , and in considering both alternatives . . 1 . That of providing year around ice capabilities and 2 . Alternate activity Programming - it is very apparent that this facility is not providing the services to the residents of Mamaroneck Township that it has the potential to provide. Whether it be year around ice skating or seasonal ice skating and off-season multi-purpose use the facility is not complete. The probable costs for basic retrofit of the facility (Alternate No. 1 $205 , 000 vs . Alternate No. 2 - $430 ,000) show that alternate No. 1 , for bare basics in considerably lower than alternate No . 2 . Thought must be given , however, as to what the expanded potential revenues may be for each of these alternatives , if revenue is a concern to the Town. It will be necessary for the Town staff to honestly project these revenues for each alternative. The affects on the residents and the potential for providing expanded services to the residents must also be considered in making the final decisions . Final decisions should not be made on the basic items alone since many of the alternatives for retrofit must be considered also to provide a full service facility in either case . As an additional challenge , thought should be given to combining the two alternative paths to allow the flexibility of both year around ice and the ability to intersperse multi-purpose users . This may be the best of all worlds for all involved. This • facility can , if properly and carefully planned, be a tremendous asset to the entire community. While considering the retrofit of the arena it is also necessary to look at scheduling, retrofit time tables and both loss and gain of revenue . Under alternate No. 1 the time necessary to accomplish the basic revisions - a new refrigerated sand floor , upgrading of the refrigeration system and replacement of the condensor - will be approximately 4 to 6 weeks . Under alternate No. 2 the time necessary to accomplish those items , and particularly the installation of a new, refrigerated concrete floor will be approximately 8 to 10 weeks , due to the Hommocks Park Ice Rink Page -34- ©I .C.E. , Inc . 1995 fact that the floor must be allowed to cure properly for at least 28 days after installation before it can be used for any activity whether it be ice skating or other of the multi-purpose uses . Other additions , under either alternate, will cause some shutdown time of the facility. It should therefore, be expected that at least one-half of the summer season revenue will be lost due to retrofit . It is important, however , that the increased revenue potential , due to the retrofit, be carefully weighed against the anticipated losses . Based on this study it is concluded that the Town of Mamaroneck can best serve its residents by using a first class retrofit including putting in a permanent refrigerated concrete floor that will provide a Class A ice skating surface and also provide a facility that has the flexibility of serving all needs . In conclusion it is felt that a combination retrofit involving both alternatives is totally feasible and should be pursued. II Hommocks Park Ice Rink Page -35- ©I .C.E. , Inc . 1995 PART IV. PROJECT RECOMMENDATIONS Based on the conclusions drawn from this study, including both the alternative No. 1 retrofit concept and the alternative No. 2 retrofit concept, for the feasibility of renovation of the Hommocks Park Ice Rink facility the following recommendations are submitted for consideration by the Town of Mamaroneck. It is recommended that: 1 . Upon Completion of individual review of this report, by Town staff and others involved in the ice sports and other possible programs at the rink, that a meeting be set up at which the preparers of this report can make a formal presentation of the report and , 2 . Upon completion of the formal presentation and discussion with staff and the public a determination be made as to which scheme or combination of schemes of renovation/expansion will be in the best interest of the community and, 3 . Upon reaching the final determination or direction of renovation complete plans and specifications , for construction , be ordered immediately to allow sufficient time for careful preparation of said plans and, 4 . That a reasonable schedule be established for completion of said plans, for bidding the project and for the project construction , and, 5 . That immediate steps be taken to set up funding for the project, either by donations or by bond issue or a combination thereof to make the project a reality, and finally • 6 . That all legal steps be taken , upon the advice of the Town Attorney to bring the project to successful fruition for the greatest benefit to the residents of Mamaroneck. Hommocks Park Ice Rink Page -36- ©I .C.E. , Inc . 1995 XION3ddV .4 . !1 I• I K . • i WI j ! H 7 , +�/ITrI NLW Ic�w It -� fpclht -1kf a. �oris-r 110► F Er-lc.,.E ...r_ PG REFI rR�'P I\ t. r 111-P0M. 1 Zf,rnesor-4i e0N'1 . .. 1 I . .;.itDRLaIH mug '- `•�+ ' `` 124` I n.N. .-1-,----;—, ` ` I�yF+GY • 5. 1,),,,,, ..„ 0 �Ih I-VOL. 1 na rzeno++ev W1.4 l��`N. �\\OX\\ ��\�\`\\\`\�` H GHAl.1 i R \ �` I' ,...v.gz. ,•�,.,. �\\� E,Y/QST/Nc5 `� �! on: Cqu7T.tiA N.lK rir+aL1 111 \. \ A R NA -1 \;` 1 I 1 11 4\0, (/�� Tv ns wenovcp J III 1 ylew,N�cyN0 Rt�JK W1.-.I " I ii `� �}{nIN �K Wt; "�"� Tc vl r�il�n I tl • \ CQA 1�` ,! �r�I `�5-rrlc at.) 5E6 pfS�U:, )V/, jai.{� c, \,,\ .. k PxlhT PGxlbG t2N. . 1 fes`-,ro-,5,'`���,'���r- rra f'- •– __/ - �� \\\• "y'= • 415 PIPE. r1 .NOrli webr 4 esy___2/•__4,-7-'693.--... .. ,‘ it.„...,, ...,...,...„ _ -- �• H�1h I IS —, .`. -•`•,o��' - /. Y'; ;Toot ; . LhV� NI bpRC b,iEG I1 / ., �hlx / �q� a'� ', rlGw d-�"SIN L1►JK FpJGB. �e To R.ENi/ I rl �1�� • �}- • �...T.- –. .• \ I�r. '4) . u +1 pulwlN61 isle-41M N.al 1 1 412r.:-7.so. T ,v-- .•\ V.,`--s' 1 t -1PI .68�et-sus 11- :I Ir-04:41.0W %� 6wl�t, c.44"0-1, .� raili LIrIK Fel . /1_100_.,„„� __ �� V l --•--- _SIINA(Pr OP l' I A. Existing Facility Layout knot ir- uoisuedx3 1S3t{tze3 pasodo1d •g —I— L:-1 I I I T- -I I) kt• _ 1-1-71/,0z/g "..ioiv /ropy/ I i I I - - - - - - _r-- - - - - -- - — — — - J 7- vstl ' ..35a ,rn.,9aey- -- --j a/y /2nrlerci co fWo*it.wD L a 4.x»tva , 9..7r.4 _6u”--"svx cu0021 A»Ify. 11rO yr rix �_� EVALUATION OF REFRIGERATION SYSTEM There are basically two ( 2) types of refrigeration systems available at this time for providing artificially frozen ice skating sheets . One is what is commonly called the "direct" refrigeration system and the other is commonly referred to as the "indirect refrigeration system. " While there are several variations to each of these two types of systems these are the two basic systems available for pro- viding refrigeration for an ice skating rink ice sheet (and also for curling sheets) . There will always be arguments on each side as to which is the best system to use . One will often hear the argument -- "If the direct system is so good, why don' t any of the NHL (National Hockey League) rinks have the direct system?" One of the answers to this question is that all of the present NHL rinks were built prior to the development of the present day direct system. On the other side you hear -- "If the indirect system is so good why does it take so long to adjust the ice temperature and hardness of the ice when switching from hockey to figure skating activities (or vice versa) ?" As previously stated, each system has advantages and disadvantages and it is up to the facility owner to make the final decision, after care- ful review of each system, as to which is the most desirable system to install in the specific case. This section of the report provides a brief synopsis on each of the two systems and includes the advantages and disadvantages of each for comparison purposes . Hommocks Ice Rink Facility Page V-E-1 Mamaroneck , New York ©I .C.E. , Inc . 1995 Direct System - Existing The "direct" system is known by several different names -- direct refrigeration -- direct expansion system, and -- direct liquid refri- geration . In very simple terms the direct system is one in which the primary refrigerant is directly introduced into the rink floor refrigerant piping . The basic direct system, as such , is not a new system. Years ago, when ammonia (Refrigerant 717) was prevalent in cooling systems , there were many "direct" systems wherein the liquid ammonia, which was cooled by compression, was sent directly into the rink floor refri- geration piping . This was normally known as a "flooded" system. When problems of pipe leakage started to cause problems around ice rinks , and due to the fact that ammonia is very toxic this system was , in most instances , abandoned and the rink refrigeration systems were con- verted to the indirect systems which is discussed in the following section of this report. In 1968 the Holmsten ( now Rink Systems, Inc . ) Rinkmaster System ( "DLR" direct liquid refrigeration) was developed and patented using R-22 as the refrigerant. This system was installed in many ice skating faci- lities around the world and in most cases has been very efficient to operate. The C.W. Davis Company built direct ammonia systems during the 1950 ' s and built their first direct R-22 system in the mid-1970 ' s. These are the only major manufacturers in the United States of the direct system today. Another description of the direct system is as follows : The direct system cools the refrigerant by compression and then this refrigerant enters the piping system, as a liquid, under pressure. Under a basic law of physics , the pressure is equalized within the closed system thereby automatically shifting the colder refrigerant to the warmer spots in the ice slab. This then provides an even ice tem- perature across the entire slab or sheet of ice . Temperature, and thereby the hardness of the ice, can be controlled in a very short time using the direct refrigerant whereas the brine system takes longer since the recirculated brine must be brought back to the heat exchanger to change the temperature. Hommocks Ice Rink Facility Page V-E-2 Mamaroneck , New York ©I .C.E. , Inc . 1995 Some of the advantages of the direct system are : 1 . This system requires approximately one-third ( 1/3 ) less connected horsepower than the indirect systems . 2 . This system normally requires less space in the equipment room than the indirect system. 3 . This system operates using much smaller rink floor refrigeration pipe than does the indirect systems . ( 1/2" - 5/8" pipe for direct, 1" to 1-1/4" for indirect) 4 . This system allows for more rapid ice temperature change than does the indirect system. This is important when a rink is to be used for various ice sports . The desirable ice temperatures for various skating activities are : Speedskating - 12° - 14° F. Hockey - 15° - 17° F. Pleasure/Rec Skating - 17° - 20° F. Figure Skating - 20° - 22° F. Instructional Skating - 22° - 24° F. Curling - 26° - 28° F. This system, therefore, provides much more flexible use of an ice rink for various activities in a single day. 5 . There is no detrimental mineral buildup within the piping system that will decrease heat transfer efficiency. 6 . There are no circulation pumps required for the Holmsten Rinkmaster type direct system between compressors and the rink piping. Other equipment manufacturers utilize liquid pumps for transfer of the cooled-liquid refrigerant (R-22) . 7 . Maintenance and repair costs are normally less . Hommocks Ice Rink Facility Mamaroneck , New York Page V-E-3 ®I .C.E. , Inc . 1995 Some of the disadvantages of the direct system are: 1 . The length of time that the R-22 will still be available is being debated . Since the R-22 is an HCFC and is virtually environmen- tally safe . It is anticipated that it will be available at least into the year 2020 , however , there are some who want it eliminated now. 2 . The direct system, in some cases , has somewhat of a bad reputation due to the floor leaks that have developed in several ice rinks . Much of that was caused by the poorer grade of steel tubing that was used until recently and some was caused by improper operation of the system. 3 . The direct system is not as well known to normal cooling system technicians and, therefore, requires training of personnel in the maintenance of the system. 4 . The direct system has not been installed in the well known arenas and, therefore, many question its use. 5 . A leak in a direct system normally causes a loss of a greater amount amount of refrigerant than a leak in an indirect system. Due to the cost of R-22 this can be a distinct disadvantage. Hommocks Ice Rink Facility Mamaroneck , New York Page V-E-4 ©I .C.E. , Inc . 1995 Indirect System The indirect system is basically a two-stage refrigeration system. The primary refrigerant, which is normally R-22 and in some cases ammonia, R-717 , is first cooled by compressors . It is then transferred to a heat exchanger , through various systems such as coils that are immersed in the secondary refrigerant tank. The secondary refrigerant can be a calcium or sodium chloride and water solution, an ethylene glycol/water solution or in a few cases a propylene glycol/water solu- tion . This in turn cools the secondary (normally referred to as bri- ne) refrigerant to the desired temperature. The secondary refrigerant or brine is then pumped, by means of circulating pumps through the ice rink floor piping system where it absorbs the heat or takes the heat out of the ice sheet floor system. This system, as opposed to the direct system, utilizes first the compressors and then circulation pumps to cool the rink floor. Since the brine gradually warms as it passes through the floor piping system it is necessary to circulate a sufficient quantity to take out the desired amount of heat to maintain the proper ice temperature. An added horsepower load is also caused by the liquid friction in the piping system, therefore, a larger diameter pipe is required in the indirect floor than is required in the direct system floor. Due to the warming of the brine or secondary refrigerant as it passes through the floor piping it is more difficult to hold a constant, desired tem- perature on the overall floor area. Therefore, variations of ice tem- perature and hardness can be experienced at different floor locations. Hommocks Ice Rink Facility Mamaroneck , New York Page V-E-5 ©I .C .E. , Inc . 1995 Some of the advantages of the indirect system are : 1 . This system requires less primary refrigerant than does the direct system (average direct system requires 6000-7000 lbs . of R-22 whereas the indirect system requires approximately 800 lbs. for a simple ice sheet) . 2 . This system can utilize the less expensive plastic pipe in the floor as opposed to the direct system steel pipe. 3 . The indirect system operation is more easily understood by the average service person. 4 . The indirect system can be built by many small refrigeration com- panies that do not have the expertise or personal knowledge necessary to build a direct system. 5 . A leak in the floor piping will only lose a few gallons of relati- vely inexpensive brine solution as opposed to loss of the prime refrigerant which is an expensive gas when released. 6 . Many different floor piping systems are available including various plastic systems and plastic pipe whereas steel or stainless steel must be used in the direct system. Hommocks Ice Rink Facility Mamaroneck, New York Page V-E-6 ®I .C.E. , Inc . 1995 Some of the disadvantages of the indirect system are : 1 . Under normal or average operation this system uses more power than the direct system, therefore, operating costs are somewhat higher. 2 . The system refrigeration equipment normally requires more space, therefore , a large area is necessary to house the equipment. 3 . More noise is produced by this system as opposed to the direct system because there are more motors, pumps and moving parts. 4 . The overall ice temperature is not as easily controlled due to the nature of and the way the secondary refrigerant provides cooling of the ice sheet. 5 . Normally more maintenance can be expected on an indirect system because of more moving parts , pumps, motors and other items . 6 . The secondary refrigerant piping in the rink floor must be checked periodically and cleaned of minera' deposits or buildup caused by the brine that is circulated. There are basic advantages and disadvantages that should be considered when making the decision on what refrigeration system is to be selected for the final retrofit of the system. 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It 0.- ,,,,—,,,,,, 4 ..v.e.4 7'K# 4t•l�t �f rtf+xik..�..., . .,f.�'• /..tit- 'ry, ti+• �.["d vtp, it r' �r N ry y T1;44011 ,4044 �[A i ��,�ii ....:, ,-,:...:••4:1-.... ..:.'l.t,r 1 ,.,.•,,,y,.„--•.,.....A.,4,,.......'.rl �R �'' ,,,�, (, a•, Ration!surreal.lor Cogeneration plants create electricity and then,with waste heat, provide additional energy forusomething nearby.In the Case of a plant built by Paul Oast In Escondido,Calif.,that something was an ice rink. • Engineer's Ice Plant Helps Power County . ey DEAN NELSON is in the 30-year contract his private- Escondido officials deferred the ly held Arroyo Energy Company has collection of property tax from lee.ESCQNDIDO, Calif. — In this with the San Diego Gas and Electric floe,spread a$1.2 million sewer con- ESCONDIDO. DIDof San County, Company,The utility,under the 1078 nection charge over 30 years, and residentst northern region are accustomedfanDiegoto heat, is requires! Utility Regulatory Policy Act, moved road and bridge work in the horses and avocado orchards. But required to buy the electricity he area to the top of the city's public now they are usedr to an produces, He obtained the contract works list to help accommodate Mr. gettingin 1985 when utility prices were con- Gerst, inr incongruous s addition lnlry, steam complex siderably higher than they are now. More important, an enterprise• hockey rinks. San Diego Gas pays 5.38 cents a zone project allows the consolidation Tkeein lies the tale of a ower kilowatt hour to Mr.Gerst,accord. of the multiple design,planning and p trig to the utility, and Ii recently public hearings that, in California, entrepreneur who understands that submitted a rate of 3.12 Cents to the can drag on for years• business,like hockey,is about play- public Utilities Commission for sim- Mr.Gerst feels that the combin- ing the angles.In this case the angles alar contracts hi 1996. Mr. Gerst's tiara of power plants and hockey were his technical knowledge of co- rate, 72 percent higher than next rinks is good enough to repeat else- generation power production,the la year's proposed rate,was based on where in Southern California cal utility's begrudging obligation to projections a decade ago that utility . He financed the compleX largely pay him a juicy premium for this prices would skyrocket. They did through California Alternative Ener• power, and Escondido's willingness not, to grant him tax breaks if he helps ' The utility wag so reluctant to the first daFust da y of operation his lwbonds, and said ihatnto on revitalize a blighted area. me The result Is iceflot t$86.4 mil• exceeded his operating expenses, lion power plant with two Olympic. Predic t will the local utility hopes ' size hockey rinks,a fitness center,a A utility has anMr•Geist will be satisfied with the complex he has, swimming pool and a restaurant, Paul Gerst, t,67, an electrical power OvilgQtiOfl t0paya San Diego Gas buys 59 percent of engineer who has burnt cogeneration . , its electricity from suppliers, and plants around the country for others, ,/user price for customers already pay rates 30 aver- builtper- his own after studying tidos- age.cent higher than the national tries that would combine well with a electricity. age. The law requiring purchases cogeneration plant producing nearly y from -in rat ration providers at a e 50 megawatts of power. Severalutillocked-in rate for 30 years er to the plants provide for ice-nicking buss- honor the contract with Mr. Gerst and iworks against tto hetidea eta free chosnesses or refrigerated ef igating rink� storage. He that Mr.Geist sued and the utility .market,Mr.Barnes said. Cogeneration plants create'alae- setle4' "We're delighted to buy power triCo ever ions, with ate heat, "Mr. Geist is a canny investor from cogeneration providers,but not provide additional energy for shore• who took full advantage of a regula- .when the arrangement is Just a sob- provide tory mistake where rates were set sidy to certain Suppliers,"he said. thing nearby.In this Case it provides too high,"said Greg Barnes,assist- And while the utility thinks Mr. ene arergy ea pay for which other a i ethinks In ant general counsel for San Diego Gerst is a smart entrepreneur,Mr. Gas. Barnes said Mr.Geist was too smart Mr.Gerst said he decided to build Mr.Cerst took advantage cred- t0 build any more Icefloes. an ice rink because"I didn't want to eras and other Government bt-.efits "If he looks at the economics of have to truck in a tomato or a turnip, by building the poo int etre the may, he won't do it," Mr. Barnes I slice it,package it,then truck It out rink in an enterpris s,The city, said. again.The idea of an ice rink sound. with a population l5 :, has seen At that,Mr.Gerst simply smiles. ed good because the ice doesn't go rapid growth in the last ?A year's He has plans for five more. anywhere." creating unsightly areas for the city "Anything is possible when you're But the real revenue for Mr.Gerst to remedy. clever,"he said, RESUMES LC.E., Inc. BRADFORD A. LEMBERG, P.E. President Independent Consulting Engineers, Inc. (I.C.E.) 80 W. County Road C., Suite 801 St. Paul, Minnesota 55117 Phone: 612/482-9313 - Fax: 612/482-9558 Educational Background gip *ate Macalester College, St. Paul, MN University of Minnesota - Five Yr Curriculum Bachelor of Civil Engineering - 1958 Army Engineers School, Ft. Belvoir, VA Soils specialist Graduate Special Courses Value Engineering Life Cycle Costing Professional Registrations Professional Organizations * Arizona * Missouri * Ice Skating Institute of America * Colorado * Montana * American Consulting Engineers Council * Connecticut * New Jersey * Consulting Engineers Council of Minnesota * Florida * New York Past President * Idaho * Ohio * Advisory Board - University of Michigan * Illinois * Oregon Sports Facilities Research Laboratory * Indiana * Pennsylvania * Construction Specification Institute * Iowa * Tennessee * American Society of Civil Engineers * Kansas * Virginia * Civil Tech Advisory Committee Chairman * Maryland * Washington St. Paul Technical Institute * Massachusetts * Wisconsin * Minnesota Ice Arena Managers Association * Michigan * Wyoming * Wisconsin Ice Arena Management Association * Minnesota * Washington, DC Presentations & Papers * "Ice Arena Air Quality" Registrations Pending: Presented at 12th Annual Fall Conference 1987 Minnesota Ice Arena Managers' Association Nevada, North Carolina, North Dakota, South Dakota * "Air Quality Maintenance in Arenas" Nebraska, Texas, Utah, Presented at ISIA Annual Conference West Virginia, New Mexico Minneapolis, MN June 2, 1988 Avocation Activities * Ice Arena Problems and Remedies "They're in Your Hand" * Mpls. Apollo Club Men's Chorus Mid-Atlantic Arena Managers' Association * Antique Auto Club of America * "Ice Rink Demise! Fact or Fiction?" Presented at 1993 MIAMA Fall Conference (a paper on rink refrigerants) Experience Mr. Lemberg's engineering experience and education cover a 42 year span of time. 1950-1953 University of MN and Sibley County Highway Department 1953-1955 U.S. Army Engineer Intelligence - Ft. Belvoir and Heidelberg, W. Germany 1956 Temporary Assistant County Engineer, McLeod County, MN 1957-1958 University of MN 1958-1959 Construction Project Engineer, Minnesota Highway Department 1959-1989 Associate Principal and Special Projects Manager with large St. Paul engineering and architectural firm. • August 15, 1989 - Formed INDEPENDENT CONSULTING ENGINEERS, INC., (I.C.E.) I.C.E. is dedicated to the design of new ice skating facilities and the retrofit design of existing arenas. While with the previous engineering/architectural firm Mr. Lemberg was the managing principal of the Special Projects Section which included ice rink work. Mr. Lemberg's training in value engineering and life cycle costing is utilized to good advantage in all projects. Project lists are available, both from his previous firm endeavors and more recently from I.C.E. PROJECTS BY I.C.E., INC. Location Owner Description • Scottsdale, AZ Ice Capades Facility Condition Study for Ice Capades Chalet in Clackamus Town Center - Portland, OR (Dorothy Hamill International Group) Flagstaff, AZ AZ University Consultant/ice arena system failure. San Francisco, CA City of San Franc New Yerba Buena Gardens Children's Center Ice Rink San Jose, CA Private Owner Design New Training Facility for San Jose Sharks. Danbury, CT Private Owner Study for proposed new sportsplex. Pensacola, FL Pensacola Chr College Design ice skating facility for new sports complex. St. Charles, IL Private Owner Feasibility study and design new ice rink floor. Winnetka, IL City of Winnetka Feasibility study for new facility. Ft. Wayne, IN City of Ft. Wayne Feasibility study for retrofit of city ice arena. Annapolis, MD Anne Arundel County Retrofit fountain/ice rink - Quiet Waters Park Barnstable, MA Town of Barnstable Study and design for renovation and expansion of the Joseph P. Kennedy Memorial Ice Rink. Vineyard Haven, MA Martha's Vineyard Consultant on renovations to Marthas Vineyard Arena. Waldorf, MD Private Owner Feasibility Study for new olympic size arena in conjunction with SFRL/Univ of MI. Bowie, MD City of Bowie Feasibility study for retrofit and expansion of city Arena. Detroit, MI Detroit Skating Club Feasibility study for retrofit of club facilities. Ann Arbor, MI University of MI Consultant on retrofit of Yost Arena. Detroit, MI Private Owner Design ice floor and refrigeration system for the Palace of Auburn Hills facility. (Detroit Pistons' Home Arena) Ann Arbor, MI City of Ann Arbor Feasibility study for retrofit of two city ice rinks -- Buhr Park and Veterans Arena. Ann Arbor, MI City of Ann Arbor Design of retrofit of Buhr Park Ice Rink. (refrigerated outdoor rink) Ann Arbor, MI City of Ann Arbor Design of retrofit of Veterans Park Arena. Muskegon, MI City of Muskegon Retrofit study. Duluth, MN Duluth Ent/Conv Ctr Feasibility study for retrofit. Lakeville, MN City of Lakeville Feasibility study & design of refrigeration system, ice floor/dasherboards and consulting for new indoor arena. .Roseville, MN City of Roseville Feasibility study for new John Rose Speedskating Oval. Shakopee, MN City of Shakopee Feasibility study for new ice skating facility. Apple Valley, MN City of Apple Valley Feasibility study for new ice arena facility. Eagan, MN Private Developer Feasibility study for proposed new facility. Warroad, MN City of Warroad Consultant for new ice facility. Minneapolis, MN Augsburg College Design of new lighting in indoor arena. Mankato, MN City of Mankato Design ice rink in new civic center. St. Paul, MN Ramsey County Retrofit of county arenas. Moose Lake, MN Private Feasibility study for new facility. Forest Lake , MN School District Feasibility study for retrofit. PROJECT LIST - Page 2 Location Owner Description Webster Groves, MO Private Feasibility study and design of new facility. Kansas City, MO City of Kansas City Feasibility study for portable ice system in city auditorium. Kansas City, MO City of Kansas City Design ice rink in American Royal Arena. Kansas City, MO City of Kansas City Feasibility study for retrofit of Kemper Arena. Minot, ND State Fairgrounds Feasibility study and design of new ice rink floor. Lawrenceville, NJ Lawrenceville School Feasibility study & design of private school indoor ice arena. Princeton, NJ Princeton University Feasibility study F. design retrofit of Baker Ice Rink. New Jersey NJ Private Owner Feasibility study for retrofit of The Coliseum. Practice home of the Philadelphia Flyers Englewood, NJ Englewood Field Club Retrofit design of outdoor rink. Princeton, NJ Princeton Day School Retrofit Study of private school ice arena. Santa Fe, NM Private Owner Feasibility study for outdoor ice rink in large development. Syracuse, NY Hamilton College Feasibility study & design for retrofit of college ice arena. White Plains, NY City of White Plains Feasibility study and design for retrofit of Ebersole Park Ice Rink (refrigerated outdoor rink). Kettering, OH City of Kettering Consultant and design for retrofit of City rink. Columbus, OH Private Owner Design of new two sheet ice skating facility. Portland, OR NW Skating Association Consulting and Design of new ice skating facility. Kennett Sq, PA Upland Country Day School Feasibility study and retrofit design of school arena. Lancaster, PA Franklin/Marshall College Feasibility study and design college arena. Warminster, PA Private Owner Consultant on Rink Damage at Face-Off Circle Arena. Waynesboro, PA Private Owner Feasibility Study i design of new ice skating facility. York, PA City of York Feasibility study & design retrofit of city ice rink. Pittsburgh, PA Private Owner Feasibility study for proposed new ice arena facility. Dallas, TX Private Owner Feasibility study/design new two-sheet facility Reston, VA Private Owner Design of new two sheet ice arena. Fairfax County, VA County of Fairfax Design of new ice arena. Tacoma, WA Pierce County Consultant on dasherboard system. Newport, WA Private Owner Feasibility Study and design of new sports complex. Somerset, WI Private Owner Feasibility Study for new civic center arena. Manitowoc, WI Private Owner Feasibility Study and design of new ice arena. Stevens Point, WI City of Stevens Point Feasibility Study for retrofit of Willett Arena. Madison, WI Dane County Feasibility Study for new two sheet ice arena for County and UW hockey team and convention center. Middleton, WI Private Owner Feasibility Study for new indoor ice arena. Waukesha, WI Waukesha County Construction Management Team for new facility. Neenah, WI Private Owner Consultant/new two-sheet facility - Tri-County Arena. Jackson, WY Private Owner Feasibility Study for new indoor ice arena. Washington, DC National Art Gallery Design for new ice rink for National Sculpture Garden on the Capital Mall. Memorandum To: Supervisor and Town Board Chairman and Members of Recreation Commission From: Stephen V. Altieri Town Administrator William Zimmermann Recreation Superintendent Re: Pro-Forma Hommocks Ice Rink Date: November 13, 1995 In order to continue an evaluation of the future use of the Hommocks Ice Rink it would be helpful to consider the financial impact of any extension of the existing use or of an alternate use in the rink. Attached are two pro-formas showing the estimated income and expenses for the following alternatives. Pro-forma A illustrates the incremental cost to operate the Hommocks Ice Rink as an ice skating facility for an additional seventeen weeks between May and September. Pro- forma B illustrates the cost to operate the facility for alternate recreational programming. Under this pro-forma however we have assumed an operating period of fifteen weeks. We must allow two weeks for the conversion from ice to flooring and the conversion back to ice in September. Pro-forma A is based upon the assumption that the rink would be upgraded to maintain the ice surface through the Spring and Summer. In terms of income we have assumed that revenue would be generated through thefollowing programs: Ice Rentals: The rink would be rented for five hours each weekday and for ten hours on Saturday and Sunday at $200 per hour. Hockey leagues and hockey teams looking for a summer facility would likely use the facility. Hockey Camp: A private operator would be responsible for operating the camp and pay a percentage of their earnings to the Town. In this case we have assumed four two week camps with total enrollment of 480 hockey players and total earnings of$84,000. The Town's share of 40%would be identical to the arrangement the Town has with our soccer camp. Figure Skating: We have been successful operating our own skating school and therefore would operate the school in an extended season. One additional five week session of approximately 30 classes involving 250 figureskaters. The average fee would be $65.00/skater. Also the Town would operate two eight week spring and summer freestyle sessions with approximately 40 skaters at $130 per skater. The expense assumptions are as follows: Salaries: This category includes salaries for rink staff to manage and maintain the facility. Also included are salaries for skating school personnel. Electricity: The electric estimate is based upon the average expense during the eight month ice skating season. We have also added a factor for the air conditioning system that would be operating in the support building during the summer months. Telephone/Water: The estimate is based on the average expenditure during our ice skating season. Miscellaneous: In this category we have included additional expenditures for building supplies, fuel, zamboni repairs and other day to day operating expenditures. Debt Service: The feasibility study prepared by ICE Consultants, presented a series of alternative improvements that would be necessary for upgrading the rink. After a review of the report we identified those improvements that were critical to a year round ice rink facility. The total expenditure including architectural and engineering fees is estimated to be $600,000._, The debt service expense assumes a 15 year bond ofT600,000 of an average interest rate of 5.8%. Based upon our assumptions, the total income would be $240,400 and total expenses including debt of$165,950. The net income would be $74,450. Pro-forma Bis an analysis for alternate programming during the spring and summer months. Under this alternative a flooring such as the Sport Court installed by Rollerdome would be used for recreational activities. We envision use of the facility by both a licensed program like Rollerdome along with rentals and Town programs. Rentals: We have assumed that the Town would rent and program the facility between 6:00am and 10:00am during the week and 6:00am and 11:00am on weekends. The balance of the time would be used by the concession activity. Other programs would include volleyball, basketball, indoor soccer and lacrosse. Also a fitness/aerobic program and walking track could be incorporated into the facility. The rental rate for the facility would be $150 per hour. Licensed Operation: Using Rollerdome as the example the Town would enter into an agreement for an operator to run a program in the facility. The consideration for the use of the facility would be the installation of capital improvements and/or the payment of rent. For the pro-forma we have assumed a rental payment. The expenses of the facility for alternate programming would be as follows: Salaries: The Town would incur salary expenses for the manager and custodian that would need to be in the facility when it is in use. Electricity: Our estimate of expense is based upon the assumption that the facility would be air conditioned. Miscellaneous: This includes additional expenses for supplies outside repair services and other items related to the operation of the building. Debt Service: The assumption for this expense is that the Town would expend funds for the installation of the air conditioning system. The system is expected to cost $150,000 and funds would be borrowed for a period of 15 years at an average interest rate of 5.8%. There would be no capital improvement for the flooring since the licensed program operator would provide the flooring. Alternative programming generates total revenue of$114,000 and expenses of$43,700 including debt service producing a net income of$70,300. As you can see from the pro-formas both alternatives are expected to generate income in excess of total expenses. We have based this assumption on the experience of other facilities in the metropolitan area. Obviously our own experience may vary. The decision on which alternative to pursue will depend on the objectives of a capital investment in the Hommocks Ice Rink. Should the Board members or members of the Commission require further information, before our meeting on the 20th of November, please do not hesitate to contact us. proforma Pro-Forma A Hommocks Ice Rink Cash Flow Statement Extended Ice Rink Season Income Ice Rentals $153,000 Hockey Camps 33,600 Figure Skating 27,000 Public Sessions 24,000 Pro-Shop/Concessions 2,800 Gross Income $ 240,000 Operations/Maintenance Salaries $ 44,000 Electricity 38,000 Telephone 850 Water 700 Miscellaneous 5,000 Total Expense $ 91,150 Net Income $ 149,250 Income Available for Debt $ 149,250 Debt Service 74,800 Net Income $ 74,450 proforma Pro-Forma B Hommocks Ice Rink Cash Flow Statement Alternate Programming Option Income Licensed Program $ 60,000 Program Revenue/Rentals 54,000 Gross Income $114,000 Operations/Maintenance Salaries $ 15,000 Electricity 8,000 Miscellaneous 2,000 Total Expense $ 25,000 Net Income $ 89,000 Income Available for Debt $ 89,000 Debt Service $ 18,700 Net Service $ 70,300 ALTERNATE#1 RETROFIT EXPENSES CASE 1A 205m CASE 1B (b) 200 New Refrigeration (c) 40 Condenser (d) 10 Exhaust (g) 15 Misc. Air Conditioning (h) 120 Floor Piping (j) 100 Installation (q) 60 Back-up Generator 545 CASE 1C 100 Incremental Refrigeration (g) 15 Misc. Air Conditioning (h) 120 Floor Piping (j) 100 Installation (q) 60 Back up Generator (d) 10 Exhaust 405 PRO-FORMA 1 FINANCIALS CASE lA Gross Income 240 Expenses 91 Net Income 149 Debt Service 25 Net Income 124 CASE 1B Debt Service 68 Net Income 81 CASE 1C - Debt Service 50 Net Income 99 ALTERNATIVE#2 RETROFIT EXPENSES CASE 2A 430 CASE 2B (a) 150 (b) 15 ` (c) 100 (d) 5 (g) 220 490 PRO-FORMA 2 FINANCIALS CASE 2A Gross Income 114 Total Expenses 25 Net Income 89 Debt Service 54 Net 35 CASE 2B Debt Services 61 Net 53 FULLY LOADED OPTION (b) 200 (c) 40 (d) 10 (g) 15 (i) 220 (j) 100 (q) 60 (a) 150 (d) 5 800 OTHER/EXPENSES Zamboni 70 Melting Pit 15 Locker 68 153 Current Refrigeration 100 � TINK I I . C . ET.