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HomeMy WebLinkAboutCIRI-ANC-CAEC MOA Sullivan Arena 2012-EE I S O C J P Investm Sullivan S Owner: The M Client: Alaska June 25, 2012 Project # CIR ment Gra Sports Are Municipality of a Housing Fin 2 RI-ANC-CAEC ade Ene ena f Anchorage nance Corpora C-35 ergy Au ation udit ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 2 of 92 Project # CIRI-ANC-CAEC-35 Prepared for: The Municipality of Anchorage Sullivan Sports Arena 1600 Gambell St Anchorage, AK 99501 Audit performed by: Energy Audits of Alaska P.O. Box 220215 Anchorage, AK 98522 Contact: Jim Fowler, PE, CEA#1705 Jim@jim-fowler.com 206.954.3614 Prime Contractor: Central Alaska Engineering Company 32215 Lakefront Drive Soldotna, AK 99699 Contact: Jerry Herring, PE, CEA #1484 AKEngineers@starband.net 907.260.5311 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 3 of 92 TABLE OF CONTENTS 1. Executive Summary 5 2. Audit and Analysis Background 15 3. Acknowledgements 17 4. Building Description & Function 18 5. Historic Energy Consumption 22 6. Interactive Effects of Projects 22 7. Loan Program 22 APPENDICES Appendix A: Photos 24 Appendix B: AkWarm-C Report 33 Appendix C: Equipment Schedules 42 Appendix D: Additional, Building-Specific EEM detail 51 Appendix E: Specifications supporting EEM’s 73 Appendix F: Benchmark Data 81 Appendix G: Building related nomenclature 89 Appendix H: Building & Equipment usage 91 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 4 of 92 REPORT DISCLAIMERS This audit was performed using American Recovery and Reinvestment Act (ARRA) funds, managed by the Alaska Housing Finance Corporation (AHFC). This energy audit is intended to identify and recommend potential areas of energy savings, estimate the value of the savings and approximate the costs to implement the recommendations. Any modifications or changes made to a building to realize the savings must be designed and implemented by licensed, experienced professionals in their fields. Lighting recommendations should all be first analyzed through a thorough lighting analysis to assure that the recommended lighting upgrades will comply with State of Alaska Statute as well as Illuminating Engineering Society (IES) recommendations. Energy Audits of Alaska, LLC and Central Alaska Engineering Company bear no responsibility for work performed as a result of this report. Payback periods may vary from those forecasted due to the uncertainty of the final installed design, configuration, equipment selected, and installation costs of recommended Energy Efficiency Measures (EEMs), or the operating schedules and maintenance provided by the owner. Furthermore, EEMs are typically interactive, so implementation of one EEM may impact the cost savings from another EEM. Neither the auditor, Central Alaska Engineering Company, AHFC, or any other party involved in preparation of this report accepts liability for financial loss due to EEMs that fail to meet the forecasted payback periods. This audit meets the criteria of an Investment Grade Audit (IGA) per the Association of Energy Engineers definition, and is valid for one year. The life of the IGA may be extended on a case-by-case basis, at the discretion of the AHFC. IGA’s are the property of the State, and may be incorporated into AkWarm-C, the Alaska Energy Data Inventory (ARIS), or other state and/or public information system. AkWarm-C is a building energy modeling software developed under contract by AHFC. This material is based upon work supported by the Department of Energy under Award Number DE-EE0000095. This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 5 of 92 1. Executive Summary Building Owner: Municipality of Anchorage 3640 East Tudor Anchorage, AK 99507 Building contact: Ernest Jackson, GM jacksone@sullivanarena.com 907-632-2602 Norman P. Long Technical Supervisor Alaska Housing Finance Corporation P.O. Box 10120 Anchorage, AK 99510-1020 Contact: Rebekah Luhrs Energy Specialist 907-330-8141 rluhrs@ahfc.us 907-279-0618 longn@sullivanarena.com Guidance to the reader: The Executive Summary is designed to contain all the information the building owner/operator should need to determine how the subject building’s energy efficiency compares with other similar use buildings, which energy improvements should be implemented, approximately how much they will cost and their estimated annual savings. Sections 2 through 7 of this report and the Appendices, are back-up and provide much more detailed information should the owner/operator, or their staff, desire to investigate further. This audit was performed using American Recovery and Reinvestment act (ARRA) funds to promote the use of innovation and technology to solve energy and environmental problems in a way that improves the State’s economy. The audit and this report are pre-requisites to access AHFC’s Retrofit Energy Assessment Loans (REAL) program, which is available to the building’s owner. The purpose of the energy audit is to identify cost-effective system and facility modifications, adjustments, alterations, additions and retrofits. Systems investigated during the audit included heating, ventilation, and air conditioning (HVAC), interior and exterior lighting, motors, building envelope, and energy management control systems (EMCS). ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 6 of 92 The site visit to this building occurred on February 8th and 9th, 2012. Unique building nomenclature used in this report is found in Appendix G. The Sullivan Sports Arena is owned by the Municipality of Anchorage (MOA) and under lease to the venue management firm, SMG of Alaska, Inc. The building will accommodate up to 8300 people for flat events such as concerts when the ice is covered, and 6400 people for hockey events when the ice is used. The original building was constructed in 1981, the ice rink sub-soil heat piping, refrigeration piping and floor were replaced in 1990, additions were made to the north and south main concourse level in 1997, the team locker rooms were renovated in 1999 (including a lighting upgrade), the roof was replaced in 2008 and audience and parking lot lighting was upgraded in 2011. According to the building supervisor, a mechanical upgrade, which will include automating the building’s HVAC controls, is planned to start within the next two years There have been numerous other minor upgrades, but no other major modifications are known to have been made. Energy Consumption and Benchmark Data Benchmark utility data for 2009 and 2010 is summarized in Tables 1 and 2 below. Table 1   2009 2010    Consumption Cost Consumption Cost  Electricity ‐ kWh 2,398,080  $         258,910 2,178,000  $         256,117  Natural Gas ‐ Therms 154,910  $         156,242 123,210  $         103,169  Totals    $         415,152    $         359,286  A benchmark measure of energy use relative to other similar function buildings in the area is the Energy Use Index (EUI), which takes the total annual energy used by the facility divided by the square footage area of the building, for a value expressed in terms of kBTU/SF. This number can then be compared to other buildings to see if it is average, higher or lower than similar buildings in the area. Likewise, the Energy Cost Index (ECI) is the cost of all energy used by the building expressed in $/SF of building area. Comparative values are shown in Table 2 below. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 7 of 92 0 50 100 150 200 250 Sullivan Arena Dempsey Ice Arena Ben Boeke Arena Natural Gas EUI Electrical EUI Table 2 – 2009 & 2010 Average EUI and ECI    Sullivan  Arena  Dempsey  Ice Arena  Ben Boeke  Arena  Continental US Average for  Places of Public Assembly**  Energy Use Index  (EUI) ‐ kBTU/SF 143 333 171 89‐102  Energy Cost Index  (ECI) ‐ $/SF $2.56 $5.44 $3.48 ‐  ** Data retrieved from the US Energy Administration database, these figures are for “Places of Public Assembly”, the most relevant category tracked by the USEA. Evaluation of energy consumption & benchmark data As observed in Table 1 above, consumption of natural gas (NG) declined by 9% and electricity by 20% from 2009 to 2010. The reasons for this are presumed to be occupancy and usage related. Reasons are difficult to positively identify because energy consumption in this building is so heavily dependent on its usage. For example, if there is a motorcycle event, the cupola exhaust vents are fully open and all ten air handling units (AHU’s) are turned on, with their outside air (OSA) dampers 100% open. But when there is not an event in progress, two AHU’s can be used, with 33% OSA to adequately heat and ventilate the building. Table 2 shows that the subject building’s EUI and ECI fall well below two very similar buildings, the Ben Boeke ice arena and the Dempsey Anderson ice arena. As is typical for Alaskan buildings, a comparison to similar buildings in the continental US shows Alaska buildings have a much higher EUI – which is to be expected given the weather differences. A deeper analysis of the energy consumption of these three buildings follows: Chart 1 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 8 of 92 Chart 1 above shows the subject building’s gas and electrical EUI compared to the two other similar use buildings selected for comparison. All three of the buildings have an ice arena, team locker rooms, and of course, ice refrigeration. The Ben Boeke and Sullivan have single rinks and audience seting while the Dempsey Anderson has a double rink and no audience seating. Natural gas consumption: NG EUI’s for the Ben Boeke and Sullivan are nearly identical – as one would expect. Consumption for the Dempsey Anderson arena is an outlier. The auditor also audited the Dempsey Anderson building and found its HVAC control system settings to be the cause of the excessive NG consumption. See that building’s detailed audit report for additional information on this. Electrical consumption: Based on Chart 1, the subject building’s electrical EUI is lower than either of the comparison buildings. This is believed to be a result of occupancy and usage differences. The Dempsey Anderson rinks are, for the most part, a practice facility. The building and its two rinks are used an average of 80 hours/week for 10 months per year while the Sullivan arena has ice in place for only 6 months each year and has an average building use of 28 hours/week for 12 months per year. The Sullivan facility does house offices which are used 40-50 hours/week, 12 months per year, but the offices do not consume nearly the electricity used by the ice refrigeration and high bay lighting. Ice refrigeration costs are typically 30% to 60% of an arenas total electrical consumption. Occupancy of the Ben Boeke arena is not known, but presumed to be closer to the Dempsey facility as it also is used as a practice rink. Recommended Energy Efficiency Measures Various Energy Efficiency Measures (EEMs) have been analyzed for this building to determine if they would provide energy savings with reasonably good payback periods. EEMs are recommended for reasons including: 1.) they have a reasonably good payback period 2.) for code compliance 3.) end of life (EOL) replacement 4.) reasons pertaining to efficient building management strategy, operations, maintenance and/or safety All the EEMs considered for this facility are detailed in the attached AkWarm-C Energy Audit Report in Appendix B and in Appendix D. Each EEM includes payback times, estimated installation costs and estimated energy savings. The summary EEM’s that follow are the only EEM’s that are recommended for this building. Others have been considered (See Appendix D-3) but are not ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 9 of 92 deemed to be justified or cost effective. The recommended EEM’s were selected based on consideration from three perspectives: overall efficiency of building management, reduction in energy consumption and return on investment (ROI). Efficient building management dictates, as an example: that all lights be upgraded, that lamp inventory variations be minimized and that all appropriate rooms have similar occupancy controls and setback thermostats - despite the fact that a single or several rooms may have an unjustifiably long payback on their individual lighting or controls upgrade. Some of the summary EEM’s below contain individual EEM’s that are grouped by type (i.e. all relevant lighting upgrades are summed and listed as a single upgrade, all thermostat setback retrofits are grouped together and listed as a single upgrade, etc.). They are prioritized as a group, with the highest ROI (shortest payback) listed first. This does not preclude implementation of fast payback EEM’s individually from other groups. Table 3 at the end of this section summarizes these EEM’s and Appendix B (the AkWarm-C detailed report) and Appendix D provide additional detail pertaining to each individual recommendation. A.) VARIABLE SPEED DRIVES (VFD’s) Recognizing the past negative experience in this facility with VFD’s, it is nonetheless recommended to re-visit this recommendation. This recommendation is made to provide management with visibility as to the costs and savings possible by implementing VFD’s in this building if the grounding and harmonics issues can be overcome. See Appendix D-2 for motors considered and additional details. VFD EEM: Estimated cost $ 72,881 Annual savings $ 40,450 Payback 1.8 years B.) RESIDENTIAL TYPE REFRIGERATORS & REFRIGERATED VENDING MACHINES There are three full size residential type refrigerators that appear to be older than 10 years. They should be replaced at their EOL with Energy Star versions at an incremental cost of $75 ea. There are two refrigerated beverage vending machines, they should have ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 10 of 92 VendingMiser’s installed. These EEM’s are found in Appendix B-7 & 15. Combined refrigeration EEM’s: Estimated cost $ 825 Annual Savings $ 424 Payback 1.9 years C.) BUILDING DDC CONTROL SYSTEM The auditor was informed that a building-wide HVAC controls upgrade is in the preliminary stages of implementation. An overall budgetary cost of $260,000 has been identified for the project. In light of this DDC upgrade, the following EEM’s are bundled to calculate estimated savings and the resulting payback. DDC CONTROLS FOR BUILDING TEMPERATURE CONTROL The upgraded HVAC controls system should incorporate night time and unoccupied temperature setbacks by zone and/or room. This will result in savings from a reduced building heating load and savings from a reduced ice refrigeration load if arena air temperatures are set back. It is recommended to use the air setback temperatures listed in Appendix B-1, 2, 3, 5, 6, 9 and 39. As a rule of thumb, there is a 10% increase in ice refrigeration costs for every 2F increase in room temperature. This translates to a 61% reduction in refrigeration costs for a 20F setback reduction in the arena air temperature. A 50F unoccupied arena and seating setback is recommended in B-3. Setback building temperature control EEM’s: Annual savings from room heating (see Appendix B) $ 38,829 Annual reduction in ice refrigeration costs $ 27,814 DDC CONTROLS FOR ICE TEMPERATURE CONTROL It is recommended to include the ice refrigeration system in the DDC controls upgrade. This will allow ice temperatures to be increased based on usage (hockey ice temperatures vs. recreational ice temperatures). See Appendix D-5A for detail. Setback Ice Temperature: Annual savings $ 18,239 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 11 of 92 Summary Building DDC controls System EEM’s: Estimated Cost $260,000 Annual Savings $ 84,882 Payback 3 years D.) COMMERCIAL REFRIGERATION There are two walk-in freezers that appear to be original equipment. The compressors and evaporators should be replaced with energy efficient versions. Savings estimated by a local refrigeration firm (Refrigeration and Food Equipment, Inc. in Anchorage) is 15%-20%. The 15% savings was used in AkWarm- C as well as an estimated maintenance savings of $500/yr for the large Hobart freezer and $350/yr for the smaller Imperial freezer. See Appendix D-6 for related information and Appendix B-13 & 15 for additional EEM detail. Combined commercial refrigeration EEM’s: Estimated cost $ 5,500 Annual Savings $ 1,423 Payback 3.9 years E.) DESKTOP COMPUTERS Desktop PC’s with an LCD monitor consume between 200 and 300 watts when in use. With a CRT monitor they consume between 300-500 watts. Laptops consume between 50 and 100 watts when in use. It is recommended to replace the 23 desktop PC’s with LCD monitors and the 5 with CRT monitors, with laptops at their EOL. The incremental difference in cost is estimated to be $200 each and although the payback is approaching the life expectancy of a laptop, the recommendation is still made. See Appendix B-17 & 25. Personal Computer EEM: Estimated cost $ 5,602 Annual savings $ 1,393 Payback 4 years F.) ICE REFRIGERATION SYSTEM WASTE HEAT RECOVERY It is recommended to recover waste heat from the ice refrigeration system and use it to pre-heat incoming OSA to the nearest AHU’s. See Appendix D-5B for detail. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 12 of 92 Waste heat recovery EEM: Estimated cost $ 100,000 Annual Savings $ 22,804 Payback 4.4 years G.) LOW EMISSIVITY CEILING PAINT Radiated energy from the arena’s ceiling accounts for 25%-30% of the ice refrigeration load. It is recommended at the next building interior re-paint, to use a low emissivity paint on the ceiling. The incremental difference in cost between re-painting with the existing ceiling paint and using a low-e paint is used below. See Appendix D-7. Low Emissivity Ceiling EEM: Estimated incremental cost $ 33,000 Annual savings $ 7,017 Payback 4.7 years H.) MOTOR REPLACEMENTS WITH PREMIUM EFFICIENCY The (18) 5 HP or larger motors in this building are listed in Appendix C. All but (4) did not have nameplates accessible to determine their rated operating efficiencies. In absence of known efficiency ratings, Table 6 in Appendix D-4 lists the efficiency ratings below which, each motor should be replaced with a premium efficiency version – either at EOL or now. As an example, looking at Table 6, if the nameplate efficiency of the 20 HP motor in AHU-1 is less than 92.2% it should be replaced with a premium efficiency motor at its EOL. But if its rated efficiency is less than 89.9%, it should be replaced now. These recommendations are made based on a 5 year payback. The (2) 5 HP motors in SF-1 should be replaced with premium efficiency motors at their EOL. The costs and savings below is based only on these two motors. Motor replacement EEM: Estimated incremental cost to replace 2 motors at EOL with premium eff. $ 300 Annual Savings $ 53 Payback 5.7 years ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 13 of 92 I.) LIGHTING AND LIGHTING CONTROLS With the exception of the team room lighting, the basement corridor lighting, audience lighting and the exterior parking lot lights, the lighting in this building is all original equipment. It is recommended to perform a complete building-wide lighting upgrade. Additionally, it is recommended at the next building re- lamp, or during the upgrade (i.e. when the lamps were to be replaced anyway) replace all 32 watt T8 lamps with 28 watt energy saver lamps. It is also recommended to add occupancy sensors to all rooms, replace incandescent bulbs with CFL bulbs and replace all exterior soffit HPS-100 watt and 250 watt bulbs with a base- reducer and LED screw-in bulbs. This EEM summarizes Appendix B-4, 8, 10-12, 14, 18-24 and 26- 38. See Appendix E for more information on occupancy sensors and energy saver 28 watt lamps. Combined Lighting Control EEM’s: Estimated cost $ 121,033 Annual Savings $ 18,513 Payback 6.5 years A summary of the estimated cost totals and estimated annual savings totals of the summary EEM’s listed above, is found in Table 3 below, and again at the end of Appendix B. Table 3 Combined total of recommended EEM’s  summarized above:  Estimated total cost $ 392,960  Annual Savings (including  maintenance savings) $  176,676  Simple payback      2.2 years  Does not include design or construction management costs In addition to EEM’s, various Energy Conservation Measures (ECM’s) are recommended. ECM’s are policies or procedures to be followed by ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 14 of 92 management and employees that require no capital outlay. ECMs recommended for this facility include: 1. Turn lights off when leaving a room that is not controlled by an occupancy sensor. 2. All man-doors, roll-up doors and windows should be properly maintained and adjusted to close and function properly. 3. Turn off computers, printers, faxes, etc. when leaving the office. Utilize a desk plug load management device similar to the “Isola” product found in Appendix E to turn off selected desk equipment when the occupant leaves his or her desk. 4. Re-configure building occupants and activities to group un- occupied offices (i.e. no tenant or staff using the space) or little used spaces, into the same HVAC zone so that zone’s energy consumption can be set back to minimal levels. 5. Continual Re-commissioning: A building is a living mini- ecosystem and its use changes. Re-evaluate building usage at least annually and confirm that building HVAC set points, zones, etc. are optimized for the current usage and occupancy. This building used digital lighting control modules (LCM’s); the lighting control settings should also be continually re-commissioned based on current building usage. 6. Lamp replacement should be a scheduled, preventative maintenance activity. Re-lamp the entire building or entire usage zones (a zone of the building that has similar lighting usage, so lamps have roughly the same lifetime) as part of a scheduled preventative maintenance routine. This assures all lamps are the same color temperature (e.g. 2700K, 3000K, etc.) which enhances occupant comfort and working efficiency. It also minimizes expense because it is more cost effective to order large quantities of the same lamp, and more labor efficient to dedicate maintenance staff to a single re-lamp activity in a building zone, rather than replace individual lamps as they fail. 7. Replace HVAC filters regularly. Maintain optimal operation of all dampers, actuators, valves and other HVAC components. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 15 of 92 2. Audit and Analysis Background Program Description: This audit included services to identify, develop, and evaluate energy efficiency measures for the subject building. The scope of this project included evaluating the building shell, lighting, hot water generation and HVAC equipment. The auditor may or may not identify system deficiencies if they exist. The auditor’s role is to identify areas of potential savings, many of which may require more detailed investigation and analysis by other qualified professionals. a. Audit Description and Methodology: Preliminary audit information was gathered in preparation for the site survey, including benchmark utility consumption data, floor and lighting plans, and equipment schedules where available. A site visit is then performed to inventory and evaluate the actual building condition, including: i. Building envelope (walls, doors, windows, etc) ii. Heating, ventilating, and air conditioning iii. Lighting systems and controls iv. Building specific equipment v. Plumbing Systems b. Benchmark Utility Data Validation: Benchmark utility data provided through AHFC’s initial phase of their REAL program is validated, confirming that meter numbers on the subject building match the meters from which the energy consumption and cost data were collected. If the data is inaccurate or missing, new benchmark data is obtained. In the event that there are inconsistencies or gaps in the data, the existing data is evaluated and missing data points are interpolated. c. Method of Analysis: The information gathered prior to the site visit and during the site visit is entered into AkWarm-C, an energy modeling software program developed specifically for AHFC to identify forecasted energy consumption. The forecasts can then be compared to actual energy consumption. AkWarm-C also has some pre-programmed EEM retrofit options that can be analyzed with projected energy savings based on occupancy schedules, utility rates, building construction type, building function, existing conditions, and climatic data uploaded to the program based on the zip code of the building. When new equipment is proposed, energy consumption is calculated based on manufacturer’s cataloged information. Energy cost savings are calculated based on the historical energy costs for the building. Installation costs include the labor and equipment required to implement an EEM retrofit, but design and construction management costs are excluded. Cost estimates are +/- 30% for this level of audit, and are derived from one or more of the following: Means Cost Data, industry publications, experience of the auditor, local contractors and/or equipment ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 16 of 92 suppliers. Brown Electric, Haakensen Electric, Proctor Sales, Pioneer Door, J.P. Sheldon and Refrigeration and Food Equipment, Inc. - all in Anchorage, were consulted for some of the lighting, boiler, overhead door and air handling retrofit and/or replacement costs. Maintenance savings are calculated, where applicable, and are added to the energy savings for each EEM. The costs and savings are considered and a simple payback period and ROI is calculated. The simple payback period is based on the number of years that it takes for the savings to pay back the net installation cost (Net Installation costs divided by Net Savings.) In cases where the EEM recommends replacement at EOL, the incremental cost difference between the standard equipment in place, and the higher efficiency equipment being recommended is used as the cost basis for payback calculation. The SIR found in the AkWarm-C report is the Savings to Investment Ratio, defined as the annual savings multiplied by the lifetime of the improvement, divided by the initial installed cost. SIR’s greater than 1.0 indicate a positive lifetime ROI. The life-time for each EEM is entered into AkWarm-C; it is estimated based on the typical life of the equipment being replaced or altered. d. Limitations of the Study: All results are dependent on the quality of input data provided, and may only act as an approximation. Most input data such as building and equipment usage, occupancy hours and numbers, building and HVAC operating hours, etc. was provided to the auditor by on site personnel. In some instances, several methods may achieve the identified savings. This report is not a design document. A design professional, licensed to practice in Alaska and in the appropriate discipline, who is following the recommendations, shall accept full responsibility and liability for the results. Budgetary estimates for engineering and design of these projects in not included in the cost estimate for each EEM recommendation, but these costs can be approximated at 15% of the cost of the work. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 17 of 92 3. Acknowledgements: We wish to acknowledge the help of numerous individuals who have contributed information that was used to prepare this report, including: a. Alaska Housing Finance Corporation (Grantor): AHFC provided the grant funds, contracting agreements, guidelines, and technical direction for providing the audits. AHFC reviewed and approved the final short list of buildings to be audited based on the recommendation of the Technical Service Provider (TSP). b. The Municipality of Anchorage (Owner): MOA provided a review and brief history of the benchmarked buildings, building selection criteria, building plans, equipment specifications, building entry and coordination with on-site personnel. c. Central Alaska Engineering Company (Benchmark TSP): CAEC oversaw the compilation of electrical and natural gas consumption data through their subcontractor, Energy Audits of Alaska, LLC. CAEC also entered that data into the statewide building database, called the Alaska Retrofit Information System (ARIS). CAEC was awarded the auditing contract for this MOA building. d. Energy Audits of Alaska (energy auditor): This firm has been selected to provide audits under this contract. The firm has two mechanical engineers, certified as energy auditors and/or professional engineers and has also received additional training from CAEC and other TSP’s to acquire further specific information regarding audit requirements and potential EEM applications. e. Accent Refrigeration Systems (ARS): ARS visited the subject building, evaluated the ice refrigeration system and made recommendations regarding possible energy efficiencies. See Appendix D-5 for report. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 18 of 92 4. Building Description and Function: Shell: This is a multi-story building with a basement, totaling 151,470 square feet, as calculated from plans. The basement level consists of an ice rink that, again, according to plans is nearly NHL-sized at 192.5’ x 85’, plus approximately 5400 square feet of offices and 4500 square feet of locker and team rooms. There are approximately 73,000 square feet of seating, approximately 28,000 square feet of storage, mechanical, garage and shops and another 24,000 feet of mixed use space including concessions, corridors, restrooms, etc. Floor: The ice rink floor has a 5” concrete slab poured below grade on top of a membrane, then covered with 5” of sand with embedded sub-soil heat piping and back up electric heat traces, covered by 4” of rigid insulation, covered by 5” of cast concrete with embedded refrigeration piping. The rest of the building is constructed on a 2-1/2” waterproofing slab covered with fiberboard and a 5” poured concrete slab supported by foundation pilings. Walls: Basement walls are cast concrete of varying thickness, the office walls (basement level) are furred out in the interior with 2”x4” wood studs with R-13 batt. Portions of the main concourse walls are cast concrete with 2”x4” metal studs furred out on the interior, also with R-13 batt. Other portions of the main concourse walls and most of the upper concourse walls are 6” pre-cast sandwich panels with 3” of embedded rigid insulation. The walls of the Zamboni room and receiving garage in the basement level are cast concrete with 1-1/2” furring and rigid foam inside. Interior walls are a combination of stud and concrete masonry units (CMU’s). The inside of all exterior furred out walls as well as interior stud walls are finished with gypsum; CMU walls are painted. Exterior wall finish is concrete. Roof: The roof is supported by steel trusses and pre-cast concrete beams and columns. The trusses are covered by a 3” metal deck, which has 4” of rigid insulation and a bitumen membrane. Insulation values, as calculated by AkWarm-c are: Concrete basement walls R- 9.9, furred out basement walls in offices R-26.6; precast concrete with embedded insulation R-17; Plaza (1997 addition) wall and roof insulated SIPS R-11.3; tower walls R-17.5; roof R-23.2. The few windows in this building are double pane aluminum frame and in good condition. Overall, the building is in good condition. Building system details are as follows: a. Heating, Cooling, Ventilation and Controls: Heat is provided by (2) Weil McLain 2520 MBH gas fired, cast iron, sectional boilers, which appear to be original equipment (1981) and therefore approaching their EOL. Heat is supplied ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 19 of 92 to the basement offices by perimeter, finned tube baseboard radiators and terminal re-heat coils in zone ventilation boxes. It is supplied to the rest of the basement by a series of hydronic unit heaters (UH’s) and cabinet unit heaters (CUH’s). Heat is provided to the main and upper concourses by (8) direct gas fired furnace/AHU’s. Heat is supplied to the 1997 addition area through the heating coils in (4) small, ceiling mounted AHU’s as well as additional CUH’s. There is no cooling in the building. Cooling was originally designed to be provided by evaporative cooling coils in the large AHU’s located in the corner towers. According to on site personnel, these coils have not been in use for a long time, due to early leakage problems. Ventilation is provided by (10) large AHU’s in the corner towers of the facility, (2) of which are ventilation only and supply air to the re-heat coils in the VAV boxes in the offices. There are (4) smaller, ceiling mounted AHU’s in the north and south Plaza area, which have hydronic heating coils. At least (2) AHU’s are running continuously when the building is occupied, and (1) or (2) more are run continuously through the winter months. It is presumed as the OSA dampers are closed, it is replaced by return air from the building, there is no heat recovery from exhaust. There are no centralized HVAC controls in the building other than the building’s human, Technical Supervisor. Each AHU is manually turned on and off and the 4-level OSA damper settings are selected manually either locally or “remote” via controllers in basement electrical rooms (remote controllers over-ride local control). The control system is pneumatic, and utilizes zoned, adjustable, low voltage and pneumatic thermostats. The CUH’s and UH’s utilize local, low voltage thermostats to control the fans in the UH”s and fan and valves in the CUH’s. As evidenced by this building’s low NG EUI, the building’s Technical Supervisor has been very effective at minimizing the HVAC systems energy consumption. b. Ice Rink Refrigeration and Sub-soil heat: At the time of the audit, the rink indoor temperature was 65F, the ice temperature was 15F and the room air had a relative humidity of 39%. Direct ice refrigeration is provided by a Holmsten Model 135 Rinkmaster system utilizing (2) York RS84A compressors driven by 100 HP Marathon motors. The ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 20 of 92 refrigeration system uses 37F ground water for cooling brought to the surface by a 35 HP submersible pump. A 7.5 HP secondary pump circulates glycol through an intermediary, isolation loop between the refrigerant heat exchanger and the ground water heat exchanger. c. De-humidification: Humidity is controlled in this building through OSA management. Measurements are taken routinely by the Technical Supervisor or his staff, and AHU’s are manually turned on or off, and OSA dampers are manually opened or closed to regulate humidity. d. Appliances: There is a large commercial clothes washer and dryer, as well as a stacked washer and dryer, (5) residential type refrigerators, (2) commercial, walk-in freezers, a commercial reach-in freezer, a residential type upright freezer and a 3-door reach-in commercial refrigerator. There is an electric range/oven in the VIP lounge. This building has (28) PC’s in use at various times of day, (5) of which have old CRT monitors. e. Concession Equipment: There is a large quantity and broad diversity of equipment in use by concessionaires. This includes beverage and beer keg coolers, deep fryers, ice makers, hot dog warmers, pretzel warmers and espresso machines. A complete list is found in Appendix C. f. Plumbing Fixtures: This building contains a total of (32) toilets, (25) of which are 3.5 gallons per flush (gpf) models, (32) urinals, (65) lavatory sinks, (3) vomitory troughs which double as urinal troughs and (12) showers. All toilets and urinal have proximity sensing valves, as do (31) of the lavatory sinks. The other (7) toilets use 1.6 gpf, the urinals appear to use 1.0 gpf and the showers are rated (per plans) at 2 gpm. See Appendix D-1 for EEM recommendations. g. Domestic Hot Water: Hot water for ice re-surfacing, sinks, showers and kitchens is provided by (2) gas fired, 600 gallon, 2000 MBH hot water heaters located in the boiler room. h. Room Lighting & Controls: With the exception of the locker & team rooms, the basement corridors and the NE tower (lounge), the lighting in this building is original equipment. Room lighting generally consists of T12-40w lamps and fixtures with magnetic ballasts. The upgraded rooms utilize T8-32w lamps with electronic ballasts. The upgraded locker and team rooms are also the only rooms that utilize occupancy sensors. The NE lounge lighting controls utilize ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 21 of 92 step dim switches (see photos in Appendix A). Appendix B details the recommendation of a full lighting upgrade. See Appendix E for additional information on occupancy sensors. All exit signs in the building are either LED or unlit, self- luminous. i. Arena Lighting & Controls: Arena lighting consists of sports lighting and audience lighting, which includes aisle, entry and stair lighting. During the benchmark period, audience lighting consisted of 1500 watt, quartz fixtures. These fixtures were replaced in 2011 with high bay T5-54 watt high output fixtures and digital lighting controls. The sports light fixtures are 1000 watt MH fixtures, they were not upgraded, but they too were retrofitted with digital lighting controls in 2011. j. Concession Lighting: Concession lighting consists of T12- 40 watt fixtures (although some have been retrofitted with T8 fixtures) with magnetic ballasts, incandescent recessed can and track lights, 250 watt MH pendants over the common areas, some CFL plug-in recessed can lights and 250 watt MH up-lights. k. Exterior Lighting: There are (72) soffit lights at various heights and locations around the building using 50 and 250 watt HPS bulbs (per plans), (5) LED wall packs, (8) 4-head LED parking lot pole lights and (12) single head LED walkway lights. l. Building Shell: The building shell is described earlier; it appears to be in average condition inside and slightly below average on its exterior. m. Motors: There are 18 large (5 HP or larger) motors in use in this building. They are listed in Appendix C and were considered for replacement with premium efficiency motors in Appendix D-3. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 22 of 92 5. Historic Energy Consumption: Energy consumption is modeled within the AkWarm-C program. The program typically analyzes twelve months of data. Two year’s worth of natural gas and electricity consumption were averaged then input into AKWarm-C. This monthly data is found in Appendix F. Energy consumption was analyzed using two factors: the Energy Cost Index (ECI) and the Energy Use Index (EUI). The energy cost index takes the annual costs of natural gas and electrical energy over the surveyed period of time (two years) divided by the square footage of the building. The ECI for this building is $2.56/SF, the ECI for two comparison buildings, the Ben Boeke Arena and the Dempsey Anderson Arena, are $3.48 and $5.44 respectively. The energy use index (EUI) is the total annual average electrical and heating energy consumption expressed in thousands of BTU/SF. The average of the 2009 and 2010 EUI for this building is 143 kBTU/SF; the average 2009/2010 EUI for the Ben Boeke arena is 171 kBTU/SF and 333 kBTU/SF for the Demsey Anderson arena. The average for “Places of Public Assembly” buildings across the US is 89-102 kBTU/SF as logged by the US Energy Information Administration. This source data can be viewed at: www.eia.gov/emeu/efficiency/cbecstrends/cbecs_tables_list.htm. 6. Interactive Effects of Projects: The AkWarm-C program calculates savings assuming that all recommended EEM are implemented in the order shown in Appendix B. Appendix D EEM’s are not included in the AkWarm-C model unless referred to in the Appendix B EEM as “see also Appendix D-X”; in these cases, the EEM is included in the AkWarm-C calculations. If some EEMs are not implemented, savings for the remaining EEMs will be affected, in some cases positively, and in others, negatively. In general, all projects were evaluated sequentially so that energy savings associated with one EEM would not be attributed to another EEM as well. By modeling the recommended projects sequentially, the analysis accounts for interactive effects between the EEMs and does not “double count” savings. Interior lighting, plug loads, facility equipment, and occupants generate heat within the building. When the building is in cooling mode, these contribute to the overall cooling demands of the building; therefore lighting efficiency improvements will reduce cooling requirements on air conditioned buildings. Conversely, lighting efficiency improvements are anticipated to increase heating requirements slightly. Heating penalties resulting from reductions in building electrical consumption are included in the lighting analysis that is performed by AkWarm-C. 7. Loan Program: The Alaska Housing Finance Corporation (AHFC) Alaska Energy Efficiency Revolving Loan Fund (AEERLF) is a State of Alaska program enacted by the Alaska Sustainable Energy Act (senate Bill 220, A.S. 18.56.855, ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 23 of 92 “Energy Efficiency Revolving Loan Fund). The AEERLF will provide loans for energy efficiency retrofits to public facilities via the Retrofit Energy Assessment for Loan System (REAL). As defined in 15 AAC 155.605, the program may finance energy efficiency improvements to buildings owned by: a. Regional educational attendance areas; b. Municipal governments, including political subdivisions of municipal governments; c. The University of Alaska; d. Political subdivisions of the State of Alaska, or e. The State of Alaska Native corporations, tribal entities, and subsidiaries of the federal government are not eligible for loans under this program. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 24 of 92 Appendix A - Photos Northwest corner tower, the box office; Plaza addition is seen at left, some of the numerous soffit lights in front of entry doors; LED pole lights upgraded in 2011 in foreground. Note lack of sidewalk snow melt. Ice rink, looking east, with audience lighting on and sports lighting off ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 25 of 92 Audience lighting Sports Lighting Ice rink is at basement level, yellow and orange seating extends up to main concourse level, red seating is upper concourse level. Note (2) black AHU supply ducts in center of photo, from NW tower AHU’s ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 26 of 92 Upgraded lighting in Northeast tower lounge Step dim lighting control panel for lounge lights ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 27 of 92 VIP loung in SE corner of basement level VIP lounge kitchen ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 28 of 92 One of the two Zamboni’s in Zamboni room, basement level Boiler room and (2) 600 gallon, 2000 MBH hot water heaters ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 29 of 92 Ice Refrigeration system Rinkside ice temperature control unit ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 30 of 92 1997 Plaza addition area with MH lights; one of the four small, ceiling mounted AHU’s is at far end of the ductwork and in photo at bottom of this page ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 31 of 92 Concession level, sampling of the concession equipment in use AHU room in a corner tower: stairwell, unused cooling coils, 33% open OSA dampers on operating AHU ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 32 of 92 Aerial View of the Sullivan Arena Ben Boeke Ice Arena (not included) Sullivan Arena NORTH Appendix B – Detailed AkWarm-C report Energy Audit – Energy Analysis and Cost Comparison  AkWarm Commercial Audit Software  Sullivan Arena Page 33   ENERGY AUDIT REPORT – PROJECT SUMMARY – Created 6/25/2012 4:47 PM General Project Information  PROJECT INFORMATION AUDITOR INFORMATION  Building: Sullivan Arena Auditor Company: Energy Audits of Alaska  Address: 1600 Gambell St Auditor  Name: James Fowler  City: Anchorage Auditor Address: P.O. Box 220215    Anchorage, AK 99522  Client Name: Ernest Jackson, GM; Norm Long, Building  Supervisor  Client Address: 1600 Gambell St  Anchorage, AK 99501  Auditor Phone: (206) 954‐3614  Auditor FAX: (   )    ‐  Client Phone: (907) 279‐0618 Auditor Comment:   Client FAX:   Design Data  Building Area: 151,470 square feet Design Heating Load: Design Loss at Space:  6,289,067  Btu/hour   with Distribution Losses:  7,730,311 Btu/hour   Plant Input Rating assuming 82.0% Plant Efficiency and  25% Safety Margin: 11,784,010 Btu/hour   Note: Additional Capacity should be added for DHW load,  if served.  Typical Occupancy: 2,017 people  Design Indoor Temperature: 68.2 deg F (building average)  Actual City: Anchorage Design Outdoor Temperature: ‐18 deg F  Weather/Fuel City: Anchorage Heating Degree Days: 10,816 deg F‐days     Utility Information  Electric Utility: Anchorage ML&P ‐ Commercial ‐ Lg Natural Gas Provider: Enstar Natural Gas ‐ Commercial ‐  Lg  Average Annual Cost/kWh: $0.112/kWh Average Annual Cost/ccf: $0.796/ccf     Annual Energy Cost Estimate  Description Space  Heating  Space  Cooling  Water  Heating Lighting Refriger ation  Other  Electrical Cooking Ventilation  Fans  Service  Fees Total Cost  Existing  Building  $150,123 $0 $7,103 $39,698 $15,260 $125,840 $2,046 $25,195 $1,842 $367,107  With  Proposed  Retrofits  $112,622 $0 $7,103 $26,970 $14,120 $123,890 $2,046 $25,066 $1,842 $313,658  SAVINGS $37,501 $0 $0 $12,728 $1,140 $1,951 $0 $129 $0 $53,449*    * This savings figure is a total of EEM’s calcuated by AkWarm‐C only; it does not include maintenance  savings or the savings identified in Appendices D‐1 through D‐7  Appendix B – Detailed AkWarm-C report Energy Audit – Energy Analysis and Cost Comparison  AkWarm Commercial Audit Software  Sullivan Arena Page 34                     $0 $100,000 $200,000 $300,000 $400,000 Existing Retrofit Service Fees Ventilation and Fans Space Heating Refrigeration Other Electrical Lighting Domestic Hot Water Cooking Annual Energy Costs by End Use Appendix B – Detailed AkWarm-C report Energy Audit – Energy Analysis and Cost Comparison  AkWarm Commercial Audit Software  Sullivan Arena Page 35   PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES Rank Feature Recommendation Annual Energy Savings Installed Cost SIR Payback (Years) 1 Setback Thermostat:  Upper Seating  Implement a Heating  Temperature Unoccupied  Setback to 50.0 deg F for the  Upper Seating space.  $15,114 Included in  $260,000  DDC costs  below  243.94 0.1 2 Setback Thermostat:  Main Concourse  Seating  Implement a Heating  Temperature Unoccupied  Setback to 50.0 deg F for the  Main Concourse Seating  space.  $5,633 Included in  $260,000  DDC costs  below  90.91 0.1 3 Setback Thermostat:  Arena Floor (includes  Temporary Seating  and Ice Rink)  Implement a Heating  Temperature Unoccupied  Setback to 50.0 deg F for the  Arena Floor (includes  Temporary Seating and Ice  Rink) space.  $10,234 Included in  $260,000  DDC costs  below  44.05 0.3 4 Lighting ‐ Power  Retrofit: Exterior:  HPS‐250  * Using socket reducer (See  Appendix E) Replace with 40  LED 80W Module  StdElectronic  $3,635 + $2,000  Maint. Savings $3,800 17.52 1 5 Setback Thermostat:  Storage and  Mechanical Areas  Implement a Heating  Temperature Unoccupied  Setback to 55.0 deg F for the  Storage and Mechanical Areas  space.  $5,012 Included in  $260,000  DDC costs  below  17.03 0.8 6 Setback Thermostat:  Team Rooms  Implement a Heating  Temperature Unoccupied  Setback to 50.0 deg F for the  Team Rooms space.  $1,362 Included in  $260,000  DDC costs  below  12.56 1 7 Refrigeration ‐  Power Retrofit:  Residential type  refrigerators > 10 yrs  old  Replace with 3 Energy Star  versions at EOL @  incremental cost of $75 ea  $141 $225 7.25 1.6 8 Lighting ‐ Power  Retrofit: Concession:  Incandescent, 100w,  OS not needed  Replace with 32 FLUOR CFL, A  Lamp 20W  $494 $480 6.37 1 9 Setback Thermostat:  Office Areas ‐  basement level  Implement a Heating  Temperature Unoccupied  Setback to 55.0 deg F for the  Office Areas ‐ basement level  space.  $1,474 Included in  $260,000  DDC costs  below  5.95 2.2 Appendix B – Detailed AkWarm-C report Energy Audit – Energy Analysis and Cost Comparison  AkWarm Commercial Audit Software  Sullivan Arena Page 36   PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES Rank Feature Recommendation Annual Energy Savings Installed Cost SIR Payback (Years) 10 Lighting ‐ Combined  Retrofit: West Office:  Incandescent, 60w,  OS added to circuit  under previous EEM  Replace with 36 FLUOR CFL, A  Lamp 15W and Remove  Manual Switching and Add  new Occupancy Sensor  $485 $541 5.53 1.1 11 Lighting ‐ Power  Retrofit: West Office:  Incandescent, 60w,  Desk Lamp  Replace with FLUOR CFL, A  Lamp 15W  $13 $15 5.18 1.2 12 Lighting ‐ Power  Retrofit: Exterior:  HPS‐50  Replace with 32 LED 17W  Module StdElectronic  $731 + $320 Maint.  Savings $2,400 5.17 3.3 13 Refrigeration ‐  Power Retrofit: Walk  in Freezer  Replace existing compressor  and evaporators with new  Energy Star versions  $337 + $500 Maint.  Savings $3,000 4.08 8.9 14 Lighting ‐ Power  Retrofit: Concession:  Incandescent, 60w,  OS not needed  Replace with 18 FLUOR CFL, A  Lamp 15W  $174 $270 3.97 1.6 15 Refrigeration ‐  Controls Retrofit:   Vending machines  Add VendingMiser  (www.vendingmiserstore.co m)  $283 $600 2.91 2.1 16 Refrigeration ‐  Power Retrofit: Walk  in Freezer  Replace existing compressor  and evaporators with new  Energy Star versions  $236 + $350 Maint.  Savings $2,500 2.76 10.6 17 Other Electrical ‐  Combined Retrofit:  Desktop Computers  Replace with 5 Laptops at EOL  @ incremental cost of $200  ea   $364 $1,001 1.67 2.7 18 Lighting ‐ Power  Retrofit: Concession:  T8‐3lamp, OS not  needed  At next building re‐lamp, or  during upcoming renovation,  replace (9) T8‐32 watt lamps  with 9 FLUOR (3) T8 4' F32T8  28W Energy‐Saver Instant  StdElectronic  $20 $81 1.53 4 19 Lighting ‐ Power  Retrofit: Concession:  T8‐2lamp, OS not  needed  At next building re‐lamp, or  during upcoming renovation,  replace (48) T8‐32 watt lamps  with 48 FLUOR (2) T8 4' F32T8  28W Energy‐Saver Instant  StdElectronic  $71 $288 1.52 4.1 Appendix B – Detailed AkWarm-C report Energy Audit – Energy Analysis and Cost Comparison  AkWarm Commercial Audit Software  Sullivan Arena Page 37   PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES Rank Feature Recommendation Annual Energy Savings Installed Cost SIR Payback (Years) 20 Lighting ‐ Combined  Retrofit: West Office:  T12‐4lamp, add OS  ** Replace with 6 FLUOR (4)  T8 4' F32T8 28W Energy‐ Saver lamps and Leviton  “Zipline” kit with Instant  StdElectronic and Remove  Manual Switching and Add  new Occupancy Sensor  $212 + $60 Maint.  Savings $1,510 1.51 7.1 21 Lighting ‐ Power  Retrofit: Team  Room: T8‐1lamp,  already OS  At next building re‐lamp, or  during upcoming renovation,  replace (44) T8‐32 watt lamps  with 44 FLUOR T8 4' F32T8  28W Energy‐Saver Instant  StdElectronic  $29 $132 1.37 4.5 22 Lighting ‐ Power  Retrofit: Team  Room: T8‐2lamp,  already OS  At next building re‐lamp, or  during upcoming renovation,  replace (8) T8‐32 watt lamps  with 8 FLUOR (2) T8 4' F32T8  28W Energy‐Saver Instant  StdElectronic  $11 $48 1.37 4.5 23 Lighting ‐ Combined  Retrofit: Concession:  T12‐4lamp, OS not  needed  Replace with 12 FLUOR (4) T8  4' F32T8 28W Energy‐Saver  lamps and Leviton “Zipline”  kit with Instant StdElectronic  and Remove Manual  Switching and Add new  Occupancy Sensor  $315 + $120 Maint.  Savings $2,881 1.27 9.1 24 Lighting ‐ Combined  Retrofit:  Zamboni/Melt Pit:  T12‐2lamp, add OS  Replace with 6 FLUOR (2) T8  4' F32T8 28W Energy‐Saver  lamps and Leviton “Zipline”  kit with Instant StdElectronic  and Remove Manual  Switching and Add new  Occupancy Sensor  $143 + $60 Maint.  Savings $1,520 1.12 10.6 25 Other Electrical ‐  Combined Retrofit:  Desktop Computers  Replace with 23 Laptops at  EOL @ incremental cost of  $200 ea   $1,029 $4,601 1.02 4.5 26 Lighting ‐ Combined  Retrofit: Concessions  T12‐2lamp OS not  needed  Replace with 47 FLUOR (2) T8  4' F32T8 28W Energy‐Saver  lamps and Leviton “Zipline”  kit with Instant StdElectronic  and Remove Manual  Switching and Add new  Occupancy Sensor  $616 + $470 Maint.  Savings $10,341 0.89 16.8 Appendix B – Detailed AkWarm-C report Energy Audit – Energy Analysis and Cost Comparison  AkWarm Commercial Audit Software  Sullivan Arena Page 38   PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES Rank Feature Recommendation Annual Energy Savings Installed Cost SIR Payback (Years) 27 Lighting ‐ Combined  Retrofit:  Storage/Mechanical:  T12‐2lamp, add OS  Replace with 65 FLUOR (2) T8  4' F32T8 28W Energy‐Saver  lamps and Leviton “Zipline”  kit with Instant StdElectronic  and Remove Manual  Switching and Add new  Occupancy Sensor  $1,254 + $650 Maint.  Savings $17,200 0.85 13.7 28 Lighting ‐ Combined  Retrofit: West Office:  T12‐3lamp, add OS  Replace with 38 FLUOR (3) T8  4' F32T8 28W Energy‐Saver  lamps and Leviton “Zipline”  kit with Instant StdElectronic  and Remove Manual  Switching and Add new  Occupancy Sensor  $946 + $380 Maint.  Savings $12,240 0.83 12.9 29 Lighting ‐ Combined  Retrofit: Concession:  T12‐2lamp, add OS  Replace with 44 FLUOR (2) T8  4' F32T8 28W Energy‐Saver  lamps and Leviton “Zipline”  kit with Instant StdElectronic  and Remove Manual  Switching and Add new  Occupancy Sensor  $576 + $440 Maint.  Savings $10,880 0.79 18.9 30 Lighting ‐ Combined  Retrofit: West Office:  T12‐2lamp, add OS  Replace with 56 FLUOR (2) T8  4' F32T8 28W Energy‐Saver  lamps and Leviton “Zipline”  kit with Instant StdElectronic  and Remove Manual  Switching and Add new  Occupancy Sensor  $985 + $560 Maint.  Savings $15,620 0.76 15.9 31 Lighting ‐ Combined  Retrofit: Mechanical  Office: T12‐2lamp,  add OS  Replace with 43 FLUOR (2) T8  4' F32T8 28W Energy‐Saver  lamps and Leviton “Zipline”  kit with Instant StdElectronic  and Remove Manual  Switching and Add new  Occupancy Sensor  $645 + $430 Maint.  Savings $11,860 0.70 18.4 32 Lighting ‐ Power  Retrofit: Concession:  T12‐2lamp, 96''  length, OS not  needed  Replace with 3 FLUOR (2) T8  8' F96T8 54W Energy‐Saver  lamps and Leviton “Zipline”  kit with HighEfficElectronic  $45 + $30 Maint.  Savings $1,200 0.53 26.7 Appendix B – Detailed AkWarm-C report Energy Audit – Energy Analysis and Cost Comparison  AkWarm Commercial Audit Software  Sullivan Arena Page 39   PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES Rank Feature Recommendation Annual Energy Savings Installed Cost SIR Payback (Years) 33 Lighting ‐ Combined  Retrofit: Concession:  T12‐1lamp, OS not  needed  Replace with 25 FLUOR T8 4'  F32T8 28W Energy‐Saver  lamps and Leviton “Zipline”  kit with Instant  HighEfficElectronic and  Remove Manual Switching  and Add new Occupancy  Sensor  $167 + $250 Maint.  Savings $8,751 0.40 52.3 34 Lighting ‐ Combined  Retrofit: West Office:  T8‐2lamp, add OS  *** At next building re‐lamp,  or during upcoming  renovation, replace (54) T8‐ 32 watt lamps with 54 FLUOR  (2) T8 4' F32T8 28W Energy‐ Saver Instant StdElectronic  and Remove Manual  Switching and Add new  Occupancy Sensor  $307 $4,824 0.39 15.7 35 Lighting ‐ Combined  Retrofit: Concession:  T12‐2lamp, U‐type,  OS not needed  Replace with 5 FLUOR (2) T8  F32T8 30W U‐Tube Energy‐ Saver Instant  HighEfficElectronic and  Remove Manual Switching  and Add new Occupancy  Sensor  $54 + $50 Maint.  Savings $2,501 0.35 45.8 36 Lighting ‐ Combined  Retrofit: West Office:  T12‐2lamp, U‐type,  add OS  Replace with 5 FLUOR (2) T8  F32T8 30W U‐Tube Energy‐ Saver Instant  HighEfficElectronic and  Remove Manual Switching  and Add new Occupancy  Sensor  $87 + $50 Maint.  Savings $3,100 0.34 35.7 37 Lighting ‐ Controls  Retrofit: Concession:  CFL 2‐lamp, plug‐in,  add OS  Remove Manual Switching  and Add new Occupancy  Sensor  $78 $1,600 0.30 20.5 38 Lighting ‐ Combined  Retrofit: West Office:  T12‐1lamp, add OS  Replace with 13 FLUOR T8 4'  F32T8 28W Energy‐Saver  lamps and Leviton “Zipline”  kit with Instant  HighEfficElectronic and  Remove Manual Switching  and Add new Occupancy  Sensor  $138 + $130 Maint.  Savings $6,950 0.30 50.5 Appendix B – Detailed AkWarm-C report Energy Audit – Energy Analysis and Cost Comparison  AkWarm Commercial Audit Software  Sullivan Arena Page 40   PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES Rank Feature Recommendation Annual Energy Savings Installed Cost SIR Payback (Years) 39 Setback Thermostat:  Concessionaire  Concourses  (including addition)  Implement a Heating  Temperature Unoccupied  Setback to 55.0 deg F for the  Concessionaire Concourses  (including addition) space.  $0 Included in  $260,000  DDC costs  below  0.00 The following EEM’s were calculated outside of AkWarm‐C and may not consider the  interactive affect of any other EEM’ above, unless specifically stated otherwise.  They are  not in order of priority or savings, relative to the EEM’s above. Appe ndix  D‐1  Plumbing Fixtures:  (71) W.C., (74)  lavatories, (63)  showers and (63)  bathtubs  Replace shower heads and  lavatory  fixtures with low  flow versions; replace   lavatory valves with proximity  sensing on/off controls,  retrofit residential toilet  valves with dual flush valves,  replace urinals with ultra‐low  flow and proximity sensing  controls  Appe ndix  D‐2  Variable Frequency  Drives (VFD’s)  Add VFD’s to 10 motors listed  in Table 5 of Appendix D‐2  $40,450 82,881 8.3 1.8 Appe ndix  D‐4  Motor replacements 2 known motors to be  replaced at EOL with  premium efficiency versions,  see Appendix D‐ for details.  $53 $300 3.5 5.7 Appe ndix  D‐5B  Ice Refrigeration  Waste Heat  Recovery  Install waste heat recovery  system in ice refrigeration  system  $22,804 $100,000 3.4 4.4 Appe ndix  D‐6  Concession  Equipment  Limited evaluation is  incorporated into EEM’s  above     Appe ndix  D‐7  Low Emissivity  Ceiling Paint  Replace 2 motors with  premium efficiency motors  now, replace 1 motor with  premium efficiency motors at  EOL; see Table 4 Appendix D‐ 2 for details  $7,017 $33,000 2.1 4.7 Appe ndix  D‐5A  Ice Temperature  Setbacks  As part of building wide DDC  controls upgrade, include ice  refrigeration system to allow  ice temperature increases  $18,239 Included in  $260,000  DDC costs  Appendix B – Detailed AkWarm-C report Energy Audit – Energy Analysis and Cost Comparison  AkWarm Commercial Audit Software  Sullivan Arena Page 41   PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES Rank Feature Recommendation Annual Energy Savings Installed Cost SIR Payback (Years)  Ice refrigeration  savings from EEM B‐ 3 above (arena  air  temperature  setbacks)    $27,814 Costs  captured in  B‐3   Building Wide DDC  controls upgrade   Savings are  distributed  throughout  various EEM’s  above $260,000  TOTAL $53,449 + $116,377 Appendix D EEM’s + $6,850 Maint. Savings = $176,676 $392,960 4.75 2.2   Sample translations of the nomenclature used above: * (item 4) Replace existing (40) exterior HPS 250watt bulbs, with E39 sockets, use a socket reducer to convert to E26, add an A-type E26 80watt LED bulb. ** (item 20) Replace the (6) existing sets of T12, 4-lamp “tombstone” end caps and magnetic ballast with (6) sets of T8 end caps and instant start ballasts using a kit such as Leviton “Zipline” (estimated cost $200/kit instsalled); replace T12-40 watt lamps with T8-28 watt energy saver lamps (estimated cost $10/lamp). Replace the manual switches with the appropriate number and type of occupancy sensors. *** (item 34) During the next building re-lamp or during the upcoming renovation (i.e. when the lamps were to be replaced anyway, so the cost is the incremental difference between a 32 watt and 28 watt lamp, estimated to be $3 ea), replace the (54) T8-32 watt lamps with T8-28 watt “energy saver” lamps; the fixture has a standard electronic ballast; also replace the existing manual switches with the appropriate number and type of occupancy sensors. Occupancy sensors cost from $200 -$300 ea installed.   ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐  AkWarmCalc Ver  2.2.0.3, Energy Lib 5/18/2012    ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 42 of 92 Appendix C – Equipment Schedules ALL SCHEDULES COMPILED FROM PLANS OR ON‐SITE NAMEPLATE OBSERVATION, WHERE  ACCESSIBLE     e= estimated   HEATING AND VENTILATION UNIT SCHEDULE  SYMBOL MFGR/MODEL FAN CFM  MOTOR DATA   HP/VOLTS/PH REMARKS  AHU‐1 Rupp TempAir ASA‐AHU‐1; 2484 MBH 23,000 20/460/3  gas fired; unit running,  OSA dampers at 33%,  OSA setting at 75%‐ 100%; West seating, all;  located in NW fan room AHU‐2 Rupp TempAir ASA‐AHU‐2; 3564 MBH 33,000 30/460/3  gas fired; unit running,  OSA dampers at 33%,  OSA setting at 75%‐ 100%; North Seating,  high; located in NW Fan  room  AHU‐3 Not installed  AHU‐4  Rupp TempAir ASA‐AHU‐4 (ventilation  only)  16,000 15/460/3  unit running, OSA  dampers at 25%; main  concourse re‐ circulation (only VAV  unit in building);  located in NE fan room  AHU‐5 (MAU)  Rupp TempAir ASA‐AHU‐5; 3300 MBH  30,000 30/460/3  gas fired; unit on,  dampers closed, OSA  setting 50%‐75%; North  seating, middle; located  in NE fan room  AHU‐6 (MAU)  Rupp TempAir ASA‐AHU‐6; 3300 MBH  30,000 30/460/3  gas fired; unit off,  dampers closed, OSA  setting at 75%‐100%;  North seating, low;  located in NE fan room  AHU‐7 (MAU)  Rupp TempAir ASA‐AHU‐7; 2484 MBH   23,000 20/460/3;  gas fired; unit running,  OSA dampers at 33%,  OSA setting @ 75%‐ 100%; East Seating;  located in SE fan room  AHU‐8 (MAU)  Rupp TempAir ASA‐AHU‐8; 2484 MBH   23,000 20/460/3;  gas fired; unit running,  OSA dampers at 33%,  OSA setting @ 75%‐ ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 43 of 92 100%; East Seating;  located in SE fan room  AHU‐9 Not installed  AHU‐10 Rupp Tempair ASA‐AHU‐10 (ventilation  only)  16,000 15/460/3  re‐circulation; unit off,  OSA dampers closed;  located in SW fan room  AHU‐11 Rupp Tempair ASA‐AHU‐11; 3300 MBH 30,000 30/460/3  gas fired; unit off,  dampers closed, OSA  setting at 75%‐100%;  South seating, middle;  located in SW fan room  AHU‐12 Rupp Tempair ASA‐AHU‐11; 3300 MBH 30,000 30/460/3  gas fired; unit off,  dampers closed, OSA  setting at 25%‐50%;  South seating, low;  located in SW fan room  AHU‐1A  Logicaire MCF‐2300  2,700 2/460/3  with HC; located in  main concourse 1997  addition, NW  AHU‐1B  Logicaire MCF‐2300  2,700 2/460/3  with HC; located in  main concourse 1997  addition, NE  AHU‐1C  Logicaire MCF‐2300  2,700 2/460/3  with HC; located in  main concourse 1997  addition, SW  AHU‐1D Logicaire MCF‐2300  2,700 2/460/3  with HC; located in  main concourse 1997  addition, SE  FAN SCHEDULE (cooling coils no longer used)  SYMBOL MOTOR MFGR/MODEL CFM  MOTOR DATA   HP/VOLTS/PH REMARKS  SF‐1 Pace A22/18; 348 MBH HC 9000  5/480/3;  81.6%  Supply Fan ‐ serves  locker rooms; located  in boiler room  9000  5/480/3;  81.6% Return Fan   SF‐2 Pace SCF‐114A 2200 .75/115/1  Located in boiler room;  combustion air  SF‐3 Pace A‐18; 300 MBH HC 5500 1.5/480/3  located in Zamboni  basement room  SF‐4 Pace A‐16/15; 71.8 MBH cooling coil 4100 3/480/3  serves admin area;  located in SW fan room  EF‐1 Pace U‐27AF 9000 5/480/3  NW basement fan  room; boiler room  ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 44 of 92 exhaust  EF‐2 Pace U‐9F 715 .25/115/1  located in boiler room;  team room exhaust  EF‐3 Pace SCF‐97B 2500 .75/115/1  located in NE basement  storage, exhausts  laundry & elev mech   EF‐4  Pace SCF‐63A 450 .17/115/1  located in refrigeration  room; HOA switch on  "hand"  EF‐5  Pace A‐15 6000 3/480/3  located in refrigeration  room; exhausts team  rooms  EF‐6  Penn Breezeway P181T 2340 .25/115/1  located in SE mech  room; electrical rm  exhaust  EF‐7  Pace SCF52A 300 .125/115/1  located in SE mech  room; exhausts storage  rm  EF‐8  Pace SCF52A 220 .08/115/1  located in SW mech  room, exhausts VIP &  toilet rms  EF‐9 Penn Zephyr Z8 145 .08/115/1  exhausts admin toilet  rooms  EF‐1A Cook VCR‐XP 270VX8B 3000 1.5/200/3  added to S. concession  during re‐roof in 2009  EF‐1B Cook VCR‐XP 270VX8B 3000 1.5/200/3  added to N. concession  during re‐roof in 2009  PUMP SCHEDULE   SYMBOL MFGR/MODEL GPM  MOTOR DATA   HP/VOLTS/PH REMARKS  PMP‐1A Grundfos UP 80‐160 200 2360w/460/3  Primary circ when B‐1  active; located in boiler  room  PMP‐1B Grundfos UP 80‐160 200 2360w/460/3  Primary circ when B‐2  active; located in boiler  room  PMP‐2 US Motors G15BA motor 135 5/460/3; e85%  Secondary circ; rebuilt  12/31/11; north zone  heating; located in  boiler room  PMP‐3 Grundfos UPS 80‐160 110 2050w/480/3  Secondary circ; HOA  switch on "hand";  south zone heating;  located in boiler room  ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 45 of 92 PMP‐4 Grundfos UPS 50‐80/4 35 620w/480/3  SF‐1 HC (lockers);  located in boiler room  PMP‐5 Grundfos  UP 25‐64 7 .08/115/1 DHW circulation pump  PMP‐6 not in use      Refrigeration heat  recovery ‐ not in use or  not installed  PMP‐7 Unknown e12 e.125/115/1 Sub‐soil heating  PMP‐8 not in use      Snow melt pit ‐ not in  use or not installed  PMP‐9 not in use 62 1.5/480/3  NW and SW entry snow  melt circ  PMP‐10 not in use 31 .08/115/1 East snow melt circ  PMP‐11 Reliance P21J6740A 352 7.5/460/3;   ice compressor  condenser water  PMP‐12A Paco 470‐15 100 1.5/480/3  controller located in SE  basement mech room,  sewage waste pump  PMP‐12B Paco 470‐15 100 1.5/480/3  controller located in SE  basement mech room,  sewage waste pump  PMP‐14 unknown 500 35/480/3  submersible pump,  supplies ground water  for evaporative ice  refrigeration cycle; VFD  was installed but no  longer in use  BOILER SCHEDULE  SYMBOL MFGR/MODEL CONTROLS  BURNER  MOTOR   HP/VOLTS/PH REMARKS  B‐1 Weil McLain PG‐1086‐WF 600W/120/1 2/230/3  gas fired, cast iron  sectional, 2520 MBH  input, 1774 MBH  output; 80% efficiency  B‐2 Weil McLain PG‐1086‐WF 600W/120/1 1.5/230/3  gas fired, cast iron  sectional, 2520 MBH  input, 1774 MBH  output; 80% efficiency  UNIT HEATER SCHEDULE  SYMBOL (QTY) MFGR/MODEL CFM  MOTOR DATA   HP/VOLTS/PH REMARKS  ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 46 of 92 UH‐1 (3) Trane 60S; 22 MBH 815 .05/115/1  NW mech room (boiler  room) & (2) S.  basement storage  UH‐2 Trane 230S; 123 MBH 3300 .25/115/1  NW mech room (boiler  room)  UH‐3 (4) Trane 20‐S28; MBH 315 .04/115/1  Uniform storage, S.  basement storage, SE  mechanical room, SW  mechanical room  UH‐4 (2) Trane 70‐S; 30 MBH 1100 .125/115/1  Concession storage;  basement storage  UH‐5 (3) Trane 126S; 70 MBH 1760 .17/115/1  Receiving & Storage,  Zamboni room,  refrigeration room  UH‐6 (2) Trane 42S; 16 MBH 590 .05/115/1  Electric room, SE mech  room  CUH‐1 (16) Trane B42‐AQ‐08; 50.4 MBH 840 e.125/115/1  exposed, wall; Main  concourse North  CUH‐2 (4) Trane D46‐AO‐03; 27.4 MBH 320 e.04/115/1  recessed, wall; NW and  SE lobby vestibules  CUH‐3 (2) Trane D46‐AO‐13; 93.5 MBH 1200 e.125/115/1  recessed, ceiling; NW  basement vestibule,  NW mech room (boiler  room)  CUH‐4 (10) Trane D46‐AO‐02; 8.3 MBH 230 e.04/115/1  recessed, ceiling;  located in team rooms  CUH‐5 (2) Trane D46‐AO‐10; 63.5 MBH 1000 e.125/115/1  recessed, wall; (2) in NE  basement storage,   CUH‐6 Trane B12‐AO‐12; 8.3 MBH 230 e.04/115/1  exposed, wall; NE  basement corridor  CUH‐7 Trane E46‐AO‐10; 63.5 MBH 1000 e.125/115/1  recesses, ceiling; SW  basement vestibule  HOT WATER HEATER SCHEDULE   SYMBOL MFGR/MODEL  BURNER  MOTOR  NUMBER OF  ELEMENTS REMARKS  WH‐1 PVI 2500‐N‐600A 1.5/115/1  2000 MBH  input  600 gallons, gas fired,  2500 GPH recovery @  80F rise  WH‐2 PVI 2500‐N‐600A 1.5/115/1  2000 MBH  input  600 gallons, gas fired,  2500 GPH recovery @  80F rise  ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 47 of 92 PLUMBING FIXTURES   SYMBOL FIXTURE GPF QUANTITY REMARKS    W.C.  1.6 7 proximity sensor    W.C.  3.5 25 proximity sensor    Urinal  1.0 32 proximity sensor    Lavatory   ‐ 34 manually operated    Lavatory   ‐ 31 proximity sensor    Vomitory Trough ‐ 3      Showers 2.0 gpm 12 manually operated        EQUIPMENT SCHEDULES  SYMBOL FIXTURE QUANTITY  MOTOR DATA   HP/VOLTS/PH REMARKS    Controls Compressor 1 2/460/3 w/2 Leeson Motors    York (ice) compressor RS84A 2 100/460/3;  93.6% Marathon motor  General Refrigeration Equipment        Refrigerator > 10 yrs 3        Refrigerator < 10 yrs 2        1 cubic foot Refrigerator 2        Freezer ‐ Hobart 1        Walk‐In Freezer ‐ Imperial 1   w/barkin compressor    Walk‐In Freezer ‐ Hobart 1        3 door Refrigerator ‐ Hobart MES‐2 1 15.4A/115/?      Residential type upright freezer 1      GENERAL PLUG LOAD SUMMARY    Table Saw 1        Drill Press 1        Garbage Compactor 1        Commercial Washer ‐ Dexter 1   electric    Commercial Dryer ‐ Dexter 1   electric    Video Equipment 1   room 104 ‐ see pictures    Overhead Door 1   .75 HP liftmaster    Compressor 1   for Beer Keg Defrost    Grinder ‐ Delta 1        Band Saw ‐ Delta 1        Pressure Washer 1        Compressor 2        Floor Polisher 2        Stackable Washer 1   electric  ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 48 of 92   Stackable Dryer 1   electric    Dayton M3000B air cleaner 1 2/208/3 located in shop    Arc Welder 1        Microwave 8 1200w      Large Copy/Printer 1        Personal Coffee Machine 4        Water Cooler 1        Personal Printer 11        Vending Machine 4        Cash Register 10        19'' Flat Screen TV 6   Samsung    Neon "Bar Signs" 2        Server Rack 1        Telephone Backboard 1        Large TV 3    old tube type (not flat  screen)    Postage Machine 1        Toaster 1        Hand Punch 4000A 1        Paper Shredder 1        27'' Flat Screen TV 3      CONCESSION EQUIPMENT PLUG LOAD SUMMARY (excluding refrigeration equipment)    Pretzel Warmer 2        Commercial Espresso Machine 2 4600w      Warmer ‐ Bania Marie 1        Nut Roaster 1        Pizza Warmer 2 1.7Kw/120/      Food Warmer 1        Hot Dog Warmer ‐ GrillMax Express 1         Warming Tower ‐ Alto Shaam 1000  UP/VST 1 2Kw/125/1 2 door, stacked    Cheese Melter 1        Popcorn Machine ‐ Cornado 3        Deep Fryer ‐ Pitco Frialator 14 BAS 2        Stove/Oven 1    household style;  electric    Dishwasher 1   household style    Stove/Grill ‐ Imperial 1    gas fired, 2 burner  cooktop, 3 burner grill  combi    Shaved Ice Machine 2      Concession Refrigeration Equipment ‐ not considered plug loads        Beverage Cooler 3   1 door  ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 49 of 92   Beverage Cooler 7 .2/ 115/1 2 door    Beverage Cooler 5   3 door    Ice Machine ‐ Manitowac 3    2 large w/double  cooling units, 1 small  w/1 cooling unit    Keg Refrigerator ‐ Continental 2   2 triple nozzle    Keg Refrigerator ‐ Perlick 11    2 double nozzle, 9  quadruple nozzle    Keg Refrigerator 3    1 double nozzle  (.25/115/1), 2 six nozzle   Soda Fountain Dispenser 7    2 four nozzle, 5 five  nozzle    Mini Drink Cooler 1   1 door    Refrigerated Beverage Vending Machine 2 3000w    LIGHTING SCHEDULE  FIXTURE TYPE DESCRIPTION LAMPS MOUNTING  NUMBER WATTS TYPE HEIGHT  Recess can HPS ‐ Exterior, recessed fixture 1 50 recess soffit  Wall pack HPS ‐ Exterior, magnetic ballast 1 250 surface 40'  Pole Light Pole mounted, LED, Exterior 4 80 Pole 40'  Pole Light Pole mounted, LED, Exterior 1 80 Pole 16'  wall pack LED, Sub Level 1 50 surface 10'  Recess can CFL, plug‐in 2 18 recess ceiling  T8‐1 Florescent, T8 lamps, electronic ballast 1 32 surface ceiling  T8‐2 Florescent, T8 lamps, electronic ballast 2 32 surface ceiling  T8‐3 Florescent, T8 lamps, electronic ballast 3 32 surface ceiling  T12‐1 Florescent T12, magnetic ballast 1 40 surface ceiling  T12‐2 Florescent T12, magnetic ballast 2 40 surface ceiling  T12‐2 Florescent T12, U‐type, magnetic ballast 2 40 surface ceiling  T12‐2 Florescent T12, 96'' length, magnetic ballast 2 40 surface ceiling  T12‐3 Florescent T12, magnetic ballast 3 40 surface ceiling  T12‐4 Florescent T12, magnetic ballast 4 40 surface ceiling  Incandescent floor, table and desk lamps 1 60 surface 4'  Incandescent Recess can, Interior 1 60 surface ceiling  Incandescent Track lighting, Interior 1 100 surface ceiling  Pendant Quartz ‐ Interior 1 1500 hanging 40'  Pendant Metal Halide ‐ Interior, magnetic ballast 1 1000 hanging 40'  ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 50 of 92 LARGE MOTOR SCHEDULE            Motor use &  location (5 HP or  larger) HP/Volts/Ph   Existing  Efficiency Premium  Efficiency Estimated  annual  usage  (hrs) Motor purpose  RECOMMENDED FOR REPLACEMENT WITH PREMIUM EFFICIENCY MOTOR AT EOL  SF‐1 supply 5/480/3 81.6% 89.5% 733 team and locker rooms (with coil)  SF‐1 return 5/480/3 81.6% 89.5% 733 team and locker rooms (with coil)  AHU‐1 20/460/3 unknown 93.0% 8760 West seating, all  AHU‐2 30/460/3 unknown 93.6% 2340 North seating, high  AHU‐4 15/460/3 unknown 93.0% 8760 Offices  AHU‐5 30/460/3 unknown 93.6% 20 North seating, middle  AHU‐6 30/460/3 unknown 93.6% 20 North seating, low  AHU‐7 20/460/3 unknown 93.0% 1170 East seating, middle  AHU‐8 20/460/3 unknown 93.0% 1170 East seating, low  AHU‐10 15/460/3 unknown 93.0% 20 Offices  AHU‐11 30/460/3 unknown 93.6% 20 South seating, middle  AHU‐12 30/460/3 unknown 93.6% 20 South seating, low  EF‐1 5/480/3 unknown 89.5% 733 team and locker room exhaust  PMP‐2 5/460/3 unknown 89.5% 8760 main glycol circulation  PMP‐11 7.5/460/3 unknown 91.7% 4062 Ground water isolation HX loop  PMP‐14 35/460/3 unknown 93.6% 4062 Ground water   York compressor ‐  Marathon 1 100/460/3 93.6% 93.6% 2031 Ice Refrigeration  York compressor ‐  Marathon 2 100/460/3 93.6% 93.6% 2031 Ice Refrigeration  ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 51 of 92 Appendix D Additional, Building-Specific EEM details Appendix D-1: Plumbing fixtures: All urinals should be retrofitted or be replaced with ultra low flow models. The (34) lavatory faucets that still have manually operated valves should be retrofitted with proximity sensing on/off controls. The (25) toilets that are 3.5 gallon per flush (gpf) should be replaced with 1.6 gpf models. All toilets that are not used by the general public can be retrofitted with the appropriate dual flush valves (two versions below). This audit does not include water usage and AkWarm-C does not allow for the modeling of it, but a typical ultra low flow urinal (1 pint to ½ gallon per flush) can save up to 66% of water used, and typically pays back within 3 years, depending on usage. Dual flush toilet valves will typically pay back within 1-3 years, depending on usage. These payback periods are reduced by 66% or more if the fixture or valve is replaced at its EOL rather than while it’s still functioning. For an EOL replacement, the cost used is the incremental difference in cost between an ultra-low-flow fixture and a straight across replacement with the same fixture. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 52 of 92 Appendix D-2: Variable Frequency Drives (VFD’s) If outfitted with a VFD and a programmable input device (PID) which responds to a process parameter such as duct pressure or temperature for an AHU or suction or discharge pressure on a pump, a motor has the capability to only produce enough power to meet the demand. There is tremendous savings potential resulting from the relationship between motor load required and resulting fluid or air flow (Affinity Laws). As an example, if 100% of the air flow requires 100% motor’s horsepower, the Affinity laws state that 70% of air (or fluid) flow requires only 34% of the horsepower. By necessity, fan motors and pumps have to be sized for the worst case load scenario, but under normal operating conditions (80-90% of the time), need only be operating at 30%-70% of their full load. VFD’s are recommended for larger, 3-phase motors that are under varying load and duty cycles, such as air handlers, glycol circulation pumps and reciprocating compressor motors. It is recognized that VFD’s have caused grounding and harmonics problems in this building in the past by interfering with sound systems and other equipment; it is also clear that there are significant reservations about considering VFD’s again. This EEM is intended to demonstrate the savings possible, and allow building owners and managers to make an informed decision regarding risk and return on implementing VFD’s in the building. It is suggested that a single motor be chosen as a test bed; a non-essential motor that can easily be brought on line and off line without a disruption in the venue’s activities. All (18) of the large motors in this building were evaluated for VFD retrofits. The (10) motors listed below in Table 5 are those with paybacks of 5 years or less. The individual costs and predicted savings are shown in the Yaskawa reports that follow. Discounted Savings: It is important to note that these calculations were performed in absence of other building and system interactions. The Yaskawa software typically predicts savings from 50% to 69%. If other EEM’s are also incorporated, and the calculations are performed considering all other building systems, a more typical savings expectation would be 50% rather than 61%, so the savings in Table 5 below have been discounted to 72% of the values shown in the Yaskawa reports that follow. Table 5   Estimated cost Annual Savings Payback ‐ yrs  AHU‐1 $4,685 $8,277.84 0.6  AHU‐2 $6,956 $3,316.32 2.1  AHU‐4 $5,185 $6,350.40 0.8  AHU‐7 $4,685 $1,105.20 4.2  AHU‐8 $4,685 $1,105.20 4.2  PMP‐2 $3,395 $1,896 1.8  PMP‐11 $3,538 $1,261 2.8  PMP‐14 $9,792 $5,751 1.7  Compressor 1 $14,980 $5,694 2.6  Compressor 2 $14,980 $5,694 2.6  TOTAL $72,881 $40,450.32 1.8  ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 53 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 54 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 55 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 56 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 57 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 58 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 59 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 60 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 61 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 62 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 63 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 64 of 92 Appendix D-3: Additional EEM’S considered but not recommended De-stratification Fans: In high bay buildings the air temperature at the ceiling can be as much as 10F-15F higher than the air temperature where the thermostats and occupants are. Upon investigation, it was determined that there were several reasons to not recommend installing de- stratification fans in this building. The de-stratification will bring warm air down to the ice sheet, and add refrigeration load. The AHU’s direct 23,000 to 30,000 CFM of warm air down and over the upper concourse and the main concourse seating – so they are in effect, de-stratifying the air already. Replacement of AHU’s with high efficiency, condensing furnaces: As a test, the AkWarm-C software model was run a second time with a 94% thermal efficiency for AHU-1. AHU-1 is currently assumed to have an 80% efficiency, runs 24/7 and is a direct fired unit. The annual savings were $5084. If a unit this size were available in a 94% efficient, condensing version, it would cost well over $100,000 installed, which results in a 20 year payback, which is close to the the life of the unit. Therefore the recommendation is not made. MH-1000 watt Sports Lighting replacement: The 1000 watt MH sports lights were evaluated for replacement. The only feasible replacement option is a retrofit with custom LED’s. Given the blended, average 676 hours/year use of these 157 lights, their annual consumption is 106,132 KWh. LED’s, if you could find them, would consume approximately 31,840 KWh for a savings of $8320/yr. In order to maintain a 10 year payback, each LED could cost no more than $539 installed, and this is not possible. The recommendation is not made. Replacement of gas fired hot water heater with high efficiency model: The efficiency of the PVI 2500 hot water heaters in this facility is 83%. There are 99% efficient, condensing, gas fired hot water heaters available today. Given the low daily average of 575 gallons of water from the (2) existing tanks, the upgrade is not justified, as the annual savings is only $226. These water heaters seem oversized for the average demand. It is assumed when the facility is full and there are 60 hockey players and 2 Zamboni’s using DHW, the high recovery demand forces the large storage tank and high throughput. Ice Re-surfacing: Ice re-surfacing can account for up to 12% of the refrigeration costs in an ice arena. In this arena, due to the relatively low hockey use and the fact that it is a 6-month ice sheet, resurfacing probably accounts for 6% of the total refrigeration costs, or $2750/yr. Two considerations were made to reduce the energy consumption resulting from ice re-surfacing: Heating Zamboni resurfacing water: Resurfacing water has to be heated to 150F-170F as it is applied to the ice. To mitigate the energy consumed, ice refrigeration waste heat recovery was considered. In Appendix D-5, waste heat recovery is investigated to pre-heat OSA in front of the AHU’s is investigated in Appendix D-5. Ice refrigeration waste heat can also be used to pre-heat water used by the Zamboni for ice resurfacing. But again, similar to the hot water heater replacement considered above, savings associated with the relatively low demand and cost of hot water by the Zamboni (394 gallons/day, or $961/year) does not justify the expense of adding a heat exchanger, pumps and a storage tank. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 65 of 92 Resurfacing Water Purification: Impurities in the tap water used by the Zamboni to re-surface the ice adds to the ice sheet refrigeration load; it requires more energy to freezer impure water than water with fewer impurities. There are purification systems available, but once again, the low Zamboni use in this facility precludes making this recommendation. Appendix D-4: : Premium Efficiency Motor upgrades It is generally recommended that all motors, 5HP or larger, operating for 1500 hrs per year, or more, at continuous speed, be replaced at EOL with premium efficiency motors. Motors operating for 5000 hours per year, or more, can be replaced with premium efficiency motors prior to burn out, with a justifiable payback. Motors in this building, 5HP and larger, are listed in Table 6 below, along with recommendations for cost effective replacement at burn-out and for immediate replacement. There are two instances in this building of cost effective motor replacement with premium efficiency motors at burn out. Unknown efficiency ratings: There are (14) motors listed in Table 6, whose nameplates were not accessible during the audit. The lower section of Table 6 uses a 5 year payback period to determine whether to replace the motor at EOL, now, or not at all. If the motor has an actual efficiency rating is less than the rating shown in the table, then there will be a maximum of a 5 year payback upon replacement either at EOL or now, as indicated. Table 6 LARGE MOTOR SCHEDULE           E = existing motor efficiency  Motor  use &  location  (5 HP or  larger)  HP/Volts /Ph   Existin g  Efficien cy  Premi um  Efficie ncy  Estima ted  annual  usage  (hrs)  Annual  Savings  Burn‐out  payback  (yrs/cost)  Replacem ent  payback  (yrs/cost) Motor purpose  RECOMMENDED FOR REPLACEMENT WITH PREMIUM EFFICIENCY MOTOR AT EOL  SF‐1  supply 5/480/3 81.6% 89.5% 733 $26.35 5.7/$150  22.8/$60 0  team and locker rooms  (with coil)  SF‐1  return 5/480/3 81.6% 89.5% 733 $26.35 5.7/$150  22.8/$60 0  team and locker rooms  (with coil)  The motors below did not have nameplates accessible to determine rated efficiencies, therefore, based on a 5  year payback, the following recommendations are made:             Recomme nded for  replaceme nt at EOL if  E is less  than:  Recomme nded for  replaceme nt now if E  is less  than:      AHU‐1  20/460/ 3  unkno wn 93.0% 8760 92.2% 89.9% West seating, all  ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 66 of 92 AHU‐2  30/460/ 3  unkno wn 93.6% 2340 90.7% 85.4% North seating, high  AHU‐4  15/460/ 3  unkno wn 93.0% 8760 92.2% 90.3% Offices  AHU‐5  30/460/ 3  unkno wn 93.6% 20 not recommended  North seating, middle  AHU‐6  30/460/ 3  unkno wn 93.6% 20 not recommended  North seating, low  AHU‐7  20/460/ 3  unkno wn 93.0% 1170  87.8%  not  recommen ded East seating, middle  AHU‐8  20/460/ 3  unkno wn 93.0% 1170  87.8%  not  recommen ded East seating, low  AHU‐10  15/460/ 3  unkno wn 93.0% 20 not recommended  Offices  AHU‐11  30/460/ 3  unkno wn 93.6% 20 not recommended  South seating, middle  AHU‐12  30/460/ 3  unkno wn 93.6% 20 not recommended  South seating, low  EF‐1 5/480/3  unkno wn 89.5% 733  79.6%  not  recommen ded team and locker room exhaust  PMP‐2 5/460/3  unkno wn 89.5% 8760 88.6% 85.9% main glycol circulation  PMP‐11  7.5/460 /3  unkno wn 91.7% 4062 89.9% 84.0% Ground water isolation HX loop  PMP‐14  35/460/ 3  unkno wn 93.6% 4062 92.0% 88.9% Ground water   York  compres sor ‐  Maratho n 1  100/460 /3 93.6% 93.6% 2031 Already premium  efficiency  Ice Refrigeration  York  compres sor ‐  Maratho n 2  100/460 /3 93.6% 93.6% 2031 Ice Refrigeration  Efficiency ratings (E) at Full Load, per nameplate  e = estimated because nameplate not accessible or information not on nameplate  Payback figures based on power consumption at 66% of full load  ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 67 of 92 Appendix D-5: Ice Refrigeration Recommendations There are energy efficiencies to be obtained from the ice refrigeration system in this building in two possible areas. These recommendations come from Art Sutherland, founder of Accent Refrigeration Systems – an engineering company specializing in the design of ice rinks and refrigeration heat recovery systems, worldwide. Mr. Sutherland accompanied the auditor on one day of the site survey. His brief report immediately follows this summary. A.) DDC Ice Controls: Mr. Sutherland limited his scope to the ice refrigeration equipment. He recommended the installation of DDC controls on the refrigeration equipment. The savings from this recommendation is being bundled into the summary EEM (in Executive Summary Section) to install a building-wide DDC control system that includes the ice refrigeration. In this building, the annual operating cost of the ice refrigeration compressor motors, ground water pump motor and refrigerant circulation pump motor, based on a 4 month sampling of run time from the compressor log, is $31,918. As a rule of thumb (Mr. Sutherland), this is 50-70% of the total ice refrigeration costs, when sub-soil, building cooling, ice sublimation, re-surfacing, de-humidification and other ice-related costs are included. Using the more conservative, 70% figure, the annual, total ice refrigeration costs for this building are estimated to be $45,597. Hockey ice temperatures are typically 22F-24F while recreational ice temperatures are 26F-28F. It is recommended to design the DDC control system to manage ice temperature as well as the building’s HVAC system. It is further recommended to increase the ice temperature by 4F for all ice uses other than hockey. Hockey games account for 410 hours of the 4380 hours the ice sheet is in place each year. Estimated savings is 80% of the 3970 hour difference, (to accommodate ramp up and ramp down temperatures) or 3176 hours; and the rule of thumb is a 10% reduction in refrigeration costs for every 1F increase in ice temperature. Considering the upcoming building-wide DDC control system upgrade, this recommendation is not evaluated as a stand-alone EEM from a cost standpoint. The estimated 40% savings are: Setback Ice Temperature: Annual savings $ 18,239 B.) Waste Heat Recovery: There is approximately 1.0-1.5 MMBTU of energy available in the form of low grade (80F to 90F) waste heat from the compressors and heat exchangers. Rather than using ground water to cool the refrigerant, the second of Mr. Sutherland’s recommendations is to recover this waste heat via a heat exchanger, pipe the warmed glycol to the AHU’s in the nearest tower, and add a deep heating coil in front of the AHU’s to pre-heat the OSA. An approximate annual savings calculation takes 1.0 MMBTU generated each hour ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 68 of 92 of the refrigeration systems 4062 operating hours, at $8.02/MMBTU (AkWarm-C summary report) and a 70% system efficiency (piping losses, HX inefficiencies, etc.), to generate an annual savings of $22,804. Ice Refrigeration waste heat recovery EEM: Estimated cost $100,000 Annual savings $ 22,804 Payback 4.4 years ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 69 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 70 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 71 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 72 of 92 Appendix D-6: Concession Equipment replacements: There is a tremendous quantity and variation of equipment used for concessions in this facility. Evaluation of each piece of concession equipment for energy savings is beyond the scope of this report, but selected groups of equipment have been evaluated in AkWarm-C for energy savings. They include: - Keg and soft drink coolers - Commercial walk-in freezers - Glass door beverage coolers - Large commercial ice makers With one exception, the energy savings estimates used in AkWarm-C are from Table 6 below, an excerpt from the Department of Energy’s “Energy Star for Restaurants” guide. The exception is the savings resulting from retrofitting a split system compressor and evaporator for walk-in freezers; a 15%-20% energy savings figure was provided by Refrigeration and Food Equipment, Inc. located in Anchorage, AK. The more conservative, 15% figure was used in AkWarm-C, Appendix B-13 & B-16. Table 6 Source: http://greenrestaurants.org/documents/Energy_Star_Restaurants_Guide.pdf ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 73 of 92 Appendix D-7: Low Emissivity Ceiling: Radiated energy from the ceiling to the ice sheet accounts for approximately 25%-30% of the ice refrigeration load (ASHRAE Chapter 44). Typical painted ceilings have an radiation emissivity of .9. There are low emissivity paints which reduce the emissivity to .25 and horizontal fabric curtains which can reduce it to .03. Curtains are not feasible for this building, given the complexity of sports lighting, sound systems, scoreboards, etc. It is recommended, at the next building re-paint, to use low emissivity paint on the ceiling (see sample paint spec in Appendix E). Low-e paint is oil based, wet-fall, so the entire floor has to be tarped. Estimated difference in paint cost between the existing paint and low-e paint is $3,000 and the difference in estimated labor between re-applying the existing paint and using the low-e paint is estimated at $30,000. Install DDC controls on the refrigeration equipment Estimated cost $ 33,000 Annual Savings $ 7,017 Payback 4.7 years ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 74 of 92 Appendix E – Specifications supporting EEM’s Lighting Controls Occupancy sensors sense the presence of occupants, turn the lights on at a pre-determined level, and then turn the lights off after a programmed time period of no occupancy. Line of sight, motion sensing occupancy sensors can be installed in existing duplex switch boxes, as well as on ceilings. Dual technology sensors are typically ceiling mounted in rooms, lavatories, corridors, vehicle bays and storage areas where obstacles may interfere with line-of-sight sensors. The second technology in these sensors activates lighting based on sound or changes in position, and work even when a person is fully obscured by an obstacle. Zoned occupancy controls are typically recommended for long corridors, large vehicle bays and large storage areas with multiple switches and lighting zones. Zoned controls are designed to activate and de- activate lighting by zone, by row, or even by fixture, based on the location of the occupant. Occupancy sensors can reduce power consumption by 25-60%. Paybacks on occupancy sensors range from 1 to 5 years, depending on the light fixture consumption and occupancy of the room. A sample bay occupancy sensor (which could be used for zone lighting control) follows, as well as a specification sheet for 28 watt energy saver lamps. These lamps save 12% of consumption over a 32 watt lamp, but only reduce light output by 2.9% - which is almost never noticeable. Also included is a socket reducer, which can be used to convert a large E39 socket typically used for HPS and MH 250 watt bulbs, to a standard A-type, E26 or E27 socket, for which there are many LED bulbs available. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 75 of 92 Appendix E – Lighting Controls ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 76 of 92 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 77 of 92 Appendix E – Lighting Controls E39 to E26 base reducer to allow replacement of HPS-250 watt bulbs with A-type or PAR- type, screw-in LED bulbs, with no fixture modification. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 78 of 92 Appendix E – Sample digital programmable thermostat retrofit for low voltage thermostats ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 79 of 92 Appendix E – Desk plug load management device ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 80 of 92 Appendix E – Low Emissivity Ceiling Paint ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 81 of 92 Appendix E – Low Emissivity Ceiling Paint ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 82 of 92 Appendix F – Benchmark Data $0 $5,000 $10,000 $15,000 $20,000 $25,000 $30,000 $35,000 0 5000 10000 15000 20000 25000 30000 35000 Jan‐09Mar‐09May‐09Jul‐09Sep‐09Nov‐09Jan‐10Mar‐10May‐10Jul‐10Sep‐10Nov‐10Natural Gas Cost ($)Natural Gas Consumption (Therms)Date (Mon ‐Yr) Sullivan Arena ‐Natural Gas Consumption (Therms) vs. Natural Gas  Cost ($) Natural Gas Consumption (Therms) Natural Gas Cost ($) $0 $5,000 $10,000 $15,000 $20,000 $25,000 $30,000 0 50000 100000 150000 200000 250000 300000 Dec‐08Feb‐09Apr‐09Jun‐09Aug‐09Oct‐09Dec‐09Feb‐10Apr‐10Jun‐10Aug‐10Oct‐10Electric Cost ($)Electric Consumption (kWh)Date (Mon ‐Yr) Sullivan Arena ‐Electric Consumption (kWh) vs. Electric Cost ($) Electric Consumption (kWh) Electric Cost ($) ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 83 of 92 REAL Preliminary Benchmark Data Form  PART I – FACILITY INFORMATION  Facility Owner Facility Owned By Date  MOA Municipal  Government/Subdivision  06/04/12  Building Name/ Identifier Building Usage Building Square Footage  Sullivan Arena Other 151,470  Building Type Community Population Year Built  Mixed 261,500 1984  Facility Address Facility City Facility Zip  1600 Gambell Street Anchorage 99517  Contact Person  First Name Last Name Middle Name Email Phone  Ernest Jackson   jacksonE@sullivanarena.com 263‐2800  Mailing Address City State Zip    Anchorage AK       Primary  Operating  Hours  Monday‐ Friday  Saturday Sunday Holidays                   Average # of  Occupants  During  Operating  Hours                     ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 84 of 92 Sullivan Arena Buiding Size Input (sf) = 151,470 2009 Natural Gas Consumption (Therms) 154,910.00 2009 Natural Gas Cost ($) 156,242 2009 Electric Consumption (kWh) 2,398,080 2009 Electric Cost ($) 258,910 2009 Oil Consumption (Therms) 0.00 2009 Oil Cost ($) 0 2009 Propane Consumption (Therms) 0.00 2009 Propane Cost ($) 0.00 2009 Coal Consumption (Therms) 0.00 2009 Coal Cost ($) 0.00 2009 Wood Consumption (Therms) 0.00 2009 Wood Cost ($) 0.00 2009 Thermal Consumption (Therms) 0.00 2009 Thermal Cost ($) 0.00 2009 Steam Consumption (Therms) 0.00 2009 Steam Cost ($) 0.00 2009 Total Energy Use (kBtu) 23,675,647 2009 Total Energy Cost ($) 415,152 Annual Energy Use Intensity (EUI) 2009 Natural Gas (kBtu/sf) 102.3 2009 Electricity (kBtu/sf) 54.0 2009 Oil (kBtu/sf) 0.0 2009 Propane (kBtu/sf) 0.0 2009 Coal (kBtu/sf) 0.0 2009 Wood (kBtu/sf) 0.0 2009 Thermal (kBtu/sf) 0.0 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 85 of 92 2009 Steam (kBtu/sf) 0.0 2009 Energy Utilization Index (kBtu/sf) 156.3 Annual Energy Cost Index (ECI) 2009 Natural Gas Cost Index ($/sf) 1.03 2009 Electric Cost Index ($/sf) 1.71 2009 Oil Cost Index ($/sf) 0.00 2009 Propane Cost Index ($/sf) 0.00 2009 Coal Cost Index ($/sf) 0.00 2009 Wood Cost Index ($/sf) 0.00 2009 Thermal Cost Index ($/sf) 0.00 2009 Steam Cost Index ($/sf) 0.00 2009 Energy Cost Index ($/sf) 2.74 2010 Natural Gas Consumption (Therms) 123,210.00 2010 Natural Gas Cost ($) 103,169 2010 Electric Consumption (kWh) 2,178,000 2010 Electric Cost ($) 256,117 2010 Oil Consumption (Therms) 0.00 2010 Oil Cost ($) 0 2010 Propane Consumption (Therms) 0.00 2010 Propane Cost ($) 0 2010 Coal Consumption (Therms) 0.00 2010 Coal Cost ($) 0 2010 Wood Consumption (Therms) 0.00 2010 Wood Cost ($) 0 2010 Thermal Consumption (Therms) 0.00 2010 Thermal Cost ($) 0 2010 Steam Consumption (Therms) 0.00 2010 Steam Cost ($) 0 2010 Total Energy Use (kBtu) 19,754,514 ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 86 of 92 2010 Total Energy Cost ($) 359,286 Annual Energy Use Intensity (EUI) 2010 Natural Gas (kBtu/sf) 81.3 2010 Electricity (kBtu/sf) 49.1 2010 Oil (kBtu/sf) 0.0 2010 Propane (kBtu/sf) 0.0 2010 Coal (kBtu/sf) 0.0 2010 Wood (kBtu/sf) 0.0 2010 Thermal (kBtu/sf) 0.0 2010 Steam (kBtu/sf) 0.0 2010 Energy Utilization Index (kBtu/sf) 130.4 Annual Energy Cost Index (ECI) 2010 Natural Gas Cost Index ($/sf) 0.68 2010 Electric Cost Index ($/sf) 1.69 2010 Oil Cost Index ($/sf) 0.00 2010 Propane Cost Index ($/sf) 0.00 2010 Coal Cost Index ($/sf) 0.00 2010 Wood Cost Index ($/sf) 0.00 2010 Thermal Cost Index ($/sf) 0.00 2010 Steam Cost Index ($/sf) 0.00 20010 Energy Cost Index ($/sf) 2.37 Note: 1 kWh = 3,413 Btu's 1 Therm = 100,000 Btu's 1 CF ≈ 1,000 Btu's ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 87 of 92 Natural Gas Btus/CCF = 100,000 Month Start Date End Date Billing Days  Consumption  (CCF)  Natural Gas  Cost ($)  Unit Cost  ($/Therm)  Jan‐09 12/23/2008 1/28/2009 36 31630 $31,765  $1.00  Feb‐09 1/28/2009 2/25/2009 28 19930 $20,039  $1.01  Mar‐09 2/25/2009 3/26/2009 29 19630 $19,738  $1.01  Apr‐09 3/26/2009 4/28/2009 33 19110 $19,392  $1.01  May‐09 4/28/2009 5/26/2009 28 7630 $7,711  $1.01  Jun‐09 5/26/2009 6/25/2009 30 4500 $4,574  $1.02  Jul‐09 6/25/2009 7/28/2009 33 1920 $1,990  $1.04  Aug‐09 7/28/2009 8/26/2009 29 1500 $1,568  $1.05  Sep‐09 8/26/2009 9/25/2009 30 3050 $3,123  $1.02  Oct‐09 9/25/2009 10/26/2009 31 9080 $9,172  $1.01  Nov‐09 10/26/2009 11/23/2009 28 16910 $17,025  $1.01  Dec‐09 11/23/2009 12/23/2009 30 20020 $20,145  $1.01                 Jan‐10 12/23/2009 1/25/2010 33 21420 $17,784  $0.83  Feb‐10 1/25/2010 2/22/2010 28 14540 $12,093  $0.83  Mar‐10 2/22/2010 3/26/2010 32 14590 $12,134  $0.83  Apr‐10 3/26/2010 4/26/2010 31 13920 $11,688  $0.84  May‐10 4/26/2010 5/25/2010 29 6420 $5,427  $0.85  Jun‐10 5/25/2010 6/24/2010 30 2790 $2,397  $0.86  Jul‐10 6/24/2010 7/26/2010 32 2770 $2,380  $0.86  Aug‐10 7/26/2010 8/25/2010 30 1870 $1,857  $0.99  Sep‐10 8/25/2010 9/24/2010 30 2940 $2,731  $0.93  Oct‐10 9/24/2010 10/25/2010 31 8380 $7,065  $0.84  Nov‐10 10/25/2010 11/22/2010 28 11540 $9,628  $0.83  Dec‐10 11/22/2010 12/21/2010 29 22030 $17,985      Jan ‐ 09 to Dec ‐ 09 total: 154,910 $156,242     Jan ‐ 10 to Dec ‐ 10 total: 123,210 $103,169      Jan ‐ 09 to Dec ‐ 09 avg: $1.02   Jan ‐ 10 to Dec ‐ 10 avg: $0.86  ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 88 of 92 Electricity Btus/kWh =3,413 Month Start Date End Date Billing Days  Consumption  (kWh)  Total Electric Cost  ($)  Unit Cost  ($/kWh)  Dec‐08 12/9/2008 1/9/2009 31 235200 $22,280 $0.09  Jan‐09 1/9/2009 2/11/2009 33 256560 $23,095 $0.09  Feb‐09 2/11/2009 3/13/2009 30 248880 $22,254 $0.09  Mar‐09 3/13/2009 4/10/2009 28 221760 $24,033 $0.11  Apr‐09 4/10/2009 5/12/2009 32 214800 $23,319 $0.11  May‐09 5/12/2009 6/10/2009 29 194400 $21,663 $0.11  Jun‐09 6/10/2009 7/13/2009 33 140400 $17,506 $0.12  Jul‐09 7/13/2009 8/12/2009 30 123840 $16,264 $0.13  Aug‐09 8/12/2009 9/11/2009 30 113040 $15,454 $0.14  Sep‐09 9/11/2009 10/12/2009 31 205440 $23,198 $0.11  Oct‐09 10/12/2009 11/12/2009 31 226560 $25,001 $0.11  Nov‐09 11/12/2009 12/10/2009 28 217200 $24,843 $0.11                 Dec‐09 12/10/2009 1/11/2010 32 245280 $24,599 $0.10  Jan‐10 1/11/2010 2/9/2010 29 211920 $22,215 $0.10  Feb‐10 2/9/2010 3/11/2010 30 216240 $22,099 $0.10  Mar‐10 3/11/2010 4/12/2010 32 246480 $28,530 $0.12  Apr‐10 4/12/2010 5/11/2010 29 153120 $19,638 $0.13  May‐10 5/11/2010 6/10/2010 30 117360 $17,126 $0.15  Jun‐10 6/10/2010 7/12/2010 32 117600 $15,824 $0.13  Jul‐10 7/12/2010 8/11/2010 30 107280 $15,199 $0.14  Aug‐10 8/11/2010 9/10/2010 30 137520 $17,485 $0.13  Sep‐10 9/10/2010 10/11/2010 31 198720 $23,554 $0.12  Oct‐10 10/11/2010 11/9/2010 29 196800 $23,481 $0.12  Nov‐10 11/9/2010 12/9/2010 30 229680 $26,367 $0.11  Dec ‐ 08 to Nov ‐ 09 total: 2398080 $258,910    Dec ‐ 09 to Nov ‐ 10 total: 2178000 $256,117    Dec ‐ 08 to Nov ‐ 09 avg: $0.11  Dec ‐ 09 to Nov ‐ 10 avg: $0.12  ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 89 of 92 Appendix G – Building-related nomenclature used in this report Basement level – the lowest level of the building, it includes the ice, arena, team rooms, administration offices, Zamboni room, receiving and storage rooms and the boiler room. Arena – the flat area on the basement level, bounded by a concrete half-wall. The arena contains the ice rink. Plaza – the concrete areas outside the building’s north and south main concourse or street level, that bordered the building until the 1997 addition was constructed over the plaza. Main Concourse – the first building level above the arena. The arena is on the street level where concessions, ticket booths and main public entry doors are located. This level includes the lobby’s, restrooms and janitorial storage rooms. Main Concourse Seating – the lowest level of permanent seating starting from the arena floor and extending upward to the main concourse level. Upper Concourse – the second and highest level (excluding catwalks, camera and audio booths) in the building. Upper Concourse seating – permanent seating that starts at the main concourse level and extends upward to just below the ceiling. Camera and audio booths are located behind the highest level of seating on the upper concourse. Towers – the round building features located at each of the four corners of the building. The main concourse level of the towers house: ticket sales windows in the northwest tower, a lounge in the northeast tower and entry lobby’s in the southwest and southeast towers. The second floor, or upper concourse level of each tower houses a fan room with the building’s air handlers. Fan rooms – located on the upper concourse level, in each of the four towers; each fan room contains two or three air handlers Cupola – the small feature on the roof at the center of the building. Building exhaust vents are located in the cupola. Flat Events – events such as concerts, Alaska Fighting Championship, etc. where additional temporary seating is installed around the stage, within the arena area on the basement level. Audience Lighting – until 2011, the (122) ceiling mounted, 1500 watt, quartz fixtures that illuminated the entry and exit areas (not including the towers) and all seating and aisle areas. In 2011 the (122) quartz fixtures were replaced by (125) T5-54watt high output fixtures. Portions or all of audience lighting are used for the entry and exit of every event, and possibly during the event, depending on the type of event. Sports Lighting – the (157) 1000 watt metal halide (MH) fixtures located around the ceiling. Portions or all of sports lighting are used, depending on the type of event. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 90 of 92 Team Rooms – Rooms used by team participants that included changing, showers and toilet rooms, on the north side of basement level. Administrative Offices – offices on the west side of the basement level housing building administrative, maintenance and operations staff. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 91 of 92 Appendix H – Building and Equipment Usage Summary Table 5 EQUIPMENT OR BUILDING SPACE    Annual  Operating  Hours  Team Rooms/Locker rooms 733  Rink/arena 1440  Main Concourse seating 1113  Upper Concourse seating 616.5  Concessions 737  Audience Lighting 640  1/2 Sports Lighting 96  3/4 Sports Lighting 21  "Hockey configuration" (100 lights) Sports Lighting 840  All 157 lights for Televised events 96  Zamboni 1 248.4  Zamboni 2 248.4  AHU Group 1 (2 units running 24/7) 8760  AHU Group 2 (1‐2 units running during office hrs) 2340  AHU Group 3 (seldom running) 20  Plaza (1997 addition) AHU's 737  Ice Refrigeration:    Compressor 1 2031    Compressor 2 2031    Ground water pump 4062    Ground water isolation loop pump 4062  Data source: Ice refrigeration equipment operating hours obtained from a 4 month sampling taken from compressor logbook on site. Ice is melted out for 6 months each year. The distribution of operating hours across the 10 AHU’s was based on assumptions made by auditor after discussions with building’s Technical Supervisor. All other information based on conversations with the building’s Technical Supervisor during audit and afterwards by phone. The “Sullivan Arena Usage Matrix” immediately following, is a detailed breakdown of the summary figures in Table 5 above. ENERGY AUDITS OF ALASKA SULLIVAN ARENA June 25, 2012 Page 92 of 92 Appendix H – Building usage detail summarized in Table 5