The URL can be used to link to this page

Home My WebLink AboutAkiachak 2012-VEEP EENNEERRGGYY AAUUDDIITT PPOOSSTT IINNSSTTAALLLLAATTIIOONN RREEPPOORRTT Results and Recommendations from Energy Audit of Akiachak For VEEP Grants Village of Akiachak, Alaska June 20, 2012 Prepared By: Prepared For: Ameresco, Inc. 6643 Brayton Drive Anchorage, AK 99507 Alaska Energy Authority Village of Akiachak Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page i Akiachak, AK TTAABBLLEE OOFF CCOONNTTEENNTTSS EXECUTIVE SUMMARY AND PREFACE .................................................................................. 1 1.0 BUILDING DESCRIPTIONS ............................................................................................ 3 1.1 AKIACHAK CLINIC ................................................................................................... 3 1.2 AKIACHAK COMMUNITY CENTER ............................................................................. 5 1.3 AKIACHAK DAY CARE ............................................................................................. 7 1.4 AKIACHAK EARLY LEARNING CHILDHOOD PROGRAM (ELCP) BUILDING ..................... 9 1.5 AKIACHAK INDIAN REORGANIZATION ACT OFFICE .................................................. 11 1.6 AKIACHAK W ASHETERIA ....................................................................................... 13 1.7 AKIACHAK TEMPORARY POLICE STATION .............................................................. 15 1.8 AKIACHAK SCHOOL .............................................................................................. 17 1.9 AKIACHAK TRIBAL COURT OFFICE ......................................................................... 20 1.10 AKIACHAK W ATER TREATMENT PLANT .................................................................. 22 1.11 AKIACHAK ELDER AND YOUTH CENTER ................................................................. 25 2.0 UTILITIES ..................................................................................................................... 27 2.1 ELECTRICITY ....................................................................................................... 27 2.1.1 Electricity Usage Profiles ........................................................................28 2.2 FUEL ................................................................................................................... 30 3.0 OPERATIONS/MAINTENANCE PRACTICES .............................................................. 31 4.0 ENERGY CONSERVATION OPPORTUNITIES ............................................................ 32 4.1 ECO DESCRIPTIONS - PROPOSED ........................................................................ 33 4.1.1 Controls Opportunities ............................................................................33 4.1.2 Electrical Opportunities ...........................................................................33 4.1.3 Mechanical Opportunities .......................................................................33 4.2 ECO DESCRIPTIONS – NOT PROPOSED ................................................................ 34 4.2.1 Building Envelope Opportunities .............................................................34 4.2.2 Electrical Opportunities ...........................................................................34 5.0 FINAL COSTING AND CHANGES FROM INITIAL REPORTING .................................. 35 5.1 CHANGES FROM INITIAL REPORTING ..................................................................... 35 5.2 FUNDING ALLOCATION SUMMARY TABLES ............................................................. 36 Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page ii Akiachak, AK AAPPPPEENNDDIICCEESS APPENDIX A – VEEP PROJECT COSTS & EXPECTED SAVINGS ...................................... A-1 APPENDIX B – ECO CALCULATION RESULTS – NOT FUNDED ......................................... B-1 APPENDIX C – EQUATIONS USED IN CALCULATIONS ...................................................... C-1 APPENDIX D – POST INSTALLATION PHOTOS ................................................................... D-1 Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 1 Akiachak, AK EEXXEECCUUTTIIVVEE SSUUMMMMAARRYY AANNDD PPRREEFFAACCEE This Post Installation Report summarizes the results of an Ameresco Energy Audit of the Village of Akiachak, the initial energy savings measures identified and proposed, and any changes that may have occurred throughout the installation process. The Village of Akiachak is a recipient of an Alaska Energy Authority (AEA) Village Energy Efficiency Program (VEEP) grant of $150,000. Ameresco engineers conducted an energy audit of the Village of Akiachak on December 14-15, 2010. The table below shows the buildings audited and their respective square footages. City of Akiachak - Building Summary Building Category Square Footage Clinic Public Facility 1,536 Community Hall Public Building 720 Day Care Public Facility 1,440 ELCP Public Facility 400 IRA New Office Public Building 1,400 Washeteria Public Facility 2,400 Police Station Public Building 576 Tribal Council Office Public Building 2,304 Water Treatment Public Facility 9,216 Elder and Youth Center Public Building 1,680 School School 20,000 The audit identified existing types, conditions, operating modes, and energy consumption profiles for a variety of buildings, facilities and systems. The audit also identified all cost-effective system and facility modifications, adjustments, alterations, additions, and retrofits. Systems investigated during the audit included heating, ventilation, interior and exterior lighting, process exhaust, domestic hot water, motors, building envelopes, utility metering systems, and energy management control systems (EMCS). The table below shows the results of Ameresco’s audit and potential calculation savings, allocated by grant. See Appendix A for more detailed calculation results. Project costs include costs incurred from the site visit, engineering time, materials cost, and labor cost, as well as Ameresco’s markup. It is important to note that the simple paybacks (SPBs) have been determined according to ECO type. For example, the SPB for an electrical ECO is calculated using only the annual kWh savings, even though the equivalent annual fuel gallon monetary savings is reported. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 2 Akiachak, AK VEEP ECOS - PROJECT COSTS & EXPECTED SAVINGS - AKIACHAK ECO Cost Savings SPB C01 - THERMOSTAT UPGRADE $ 3,201.97 N/A N/A E01 - INSTALL OCCUPANCY SENSORS $ 21,238.10 $ 2,167.07 9.80 E02 - PREMIUM EFFICIENCY MOTORS UPGRADE $ 30,838.20 $ 704.34 43.78 E03 - CFL LIGHTING UPGRADE $ 2,588.84 $ 857.49 3.02 M01 - BOILER TUNE-UP $ 10,061.31 $ 23,482.58 0.43 M02 - BOILER UPGRADE $ 74,611.28 $ 16,484.75 4.53 AVAILABLE FUNDING $ 7,460.31 * Available funding allocated to the village of Kotlik TOTAL GRANT $150,000.00 VILLAGE TOTAL $142,539.69 $ 43,696.23 3.26 Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 3 Akiachak, AK 11..00 BBUUIILLDDIINNGG DDEESSCCRRIIPPTTIIOONNSS 11..11 AAKKIIAACCHHAAKK CCLLIINNIICC Description: The Akiachak Clinic is where village residents come to treat minor ailments and injuries. For life-threatening diseases and illnesses, villagers must visit a hospital in a larger community. The building was constructed in 1994 and is still holding up well. Building operating hours are typically 0900 – 1700, Monday through Friday, with staff on call during the weekend. General Conditions: The building is in good condition overall. No serious faults or defects were noticed during the walkthrough, though there are many opportunities for improvement. The building, however, has been continuously shifting over the years, and this has made an impact on the floor and plastic tiles. Pictures of general conditions found during the field audit immediately follow this building description. Building Envelope: The building structure overall appears to be in good condition. The metal standing seam roof is in good condition with no evidence of water leakage. Exterior walls are in good condition, although a new coat of paint is recommended. Interior walls are in good condition, but the many penetrations are not well sealed and insulated. Weather-stripping is in fair condition and in need of replacement. Due to the building movement over the years, the floor insulation is no longer adequate, as occupants complain of cold air coming through the breaks in floor tiles. Heating: One Weil-McLain Gold Oil boiler (model WGO-3) provides the building with space heating. A combustion analysis showed this boiler to be function at 84.7% combustion efficiency. The boiler is rated as 85% thermally efficient. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 4 Akiachak, AK Controls: Building heating zones are controlled by a series of mechanical thermostats. A local contractor has already been hired to upgrade the heating controls system. Lighting: Interior lighting consists primarily of T8 fluorescent lamps with electronic ballasts. Several rooms are lit by T9 fluorescent lamps with electromagnetic ballast fixtures. Domestic Water: The building contains 2 toilets and 1 shower, but only 1 of the toilets is currently operational. This toilet runs water constantly and has to be manually shut off after flushing. Building Photos: Akiachak Clinic Mechanical Thermostat Mechanical Room and Weil-McLain Boiler T8 Fluorescent Fixtures in Excellent Condition Defunct Radiant Heat System Exposed Piping Circulating Pump Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 5 Akiachak, AK 11..22 AAKKIIAACCHHAAKK CCOOMMMMUUNNIITTYY CCEENNTTEERR Description: The Community Center building in Akiachak is a common meeting place for village residents and is used for a wide variety of activities throughout the week. Building operating hours are typically in the evenings, 1730 to 2230 hours. General Conditions: The building was built in the early 1970’s and is in fair condition overall, showing many signs of weathering and age. The building structure and envelope in particular are in poor condition and need many improvements. Pictures of general conditions found during the field audit immediately follow this building description. Building Envelope: The roof is in poor condition, and the drop ceiling shows some evidence of water leakage. The exterior walls are in fair condition and show signs of age and weathering, and the interior walls are also in fair condition. The windows are in fair condition with double pane glass and wood frames instead of typical vinyl frames. Exterior doors are in poor condition and no longer seal well. Heating: Heating for the Community Center is provided by a fuel-oil fired Monitor M2400 forced air heater. This heater was installed to replace the old furnace, which is still housed in the building but is no longer operational. Controls: There is not a controls system present at the Akiachak Community Center. Lighting: Interior lighting fixtures are mostly T8 fluorescent with electronic ballasts. There are a few 90 watt incandescent fixtures throughout the facility as well. There are no occupancy sensors in the building. Domestic Water: The Community Center does not have a domestic hot water system. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 6 Akiachak, AK Building Photos: Akiachak Community Center Old, Worn Window Run Down Monitor Heater T8 Lighting Retrofit Worn, Un-Weather-stripped Door Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 7 Akiachak, AK 11..33 AAKKIIAACCHHAAKK DDAAYY CCAARREE Description: The Akiachak Day Care provides childcare services to village residents. Typical building operating hours are 0800 to 1700 hours, Monday through Friday. General Conditions: The building was built in 1999 and appears to be in good condition overall, with no major faults or defects noticed during the walkthrough. The heating system, however, is not operating at optimum efficiency and is in need of a tune-up or upgrade. Pictures of general conditions found during the field audit immediately follow this building description. Building Envelope: The metal standing seam roof is in good condition and shows no signs of weathering or damage. Exterior walls and windows are in good condition. Exterior doors are in good condition, but have poor weatherstripping. Heating: The Day Care is heated by a Burnham V8 model hot water boiler, rated 85% efficient. A combustion analysis showed this boiler to be operating at 76.5% combustion efficiency. A new Honeywell controller was installed in December of 2010. Controls: Building heating is controlled by mechanical thermostats. Lighting: Interior lighting is primarily T8 fluorescent with electronic ballasts. There are a few 90 watt incandescent fixtures throughout the facility. Exterior lighting consists of 90 watt incandescent fixtures as well. Domestic Water: Domestic hot water is provided by an Amtrol Boilermate indirect-fired water heater. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 8 Akiachak, AK Building Photos: Akiachak Daycare Deteriorating Weather-stripping Windows in Need of Caulking Make-shift Door Weather-stripping Radiant Heat System Burnham Boiler and Amtrol Boilermate Water Heater Exposed Wiring Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 9 Akiachak, AK 11..44 AAKKIIAACCHHAAKK EEAARRLLYY LLEEAARRNNIINNGG CCHHIILLDDHHOOOODD PPRROOGGRRAAMM ((EELLCCPP)) BBUUIILLDDIINNGG Description: The Akiachak Early Learning Childhood Program (ELCP) building is a school for young children in the village which teaches native traditions such as language, dance, crafts, and history. Building operating hours are 0900 to 1700, Monday through Friday. General Conditions: The building was built in the early 1980’s and is fairly run down. The building has seen a great deal of weathering and wear and is in need of many improvements. Pictures of general conditions found during the field audit immediately follow this building description. Building Envelope: Exterior walls are in fair condition and show many signs of weathering and age. The roof is in fair condition but appears to be leaking due to evidence of warped and drooping dropped ceiling tiles. Doors are in fair condition and are in need of new weather-stripping. There are several broken windows that have either been boarded up or not yet replaced. One window in particular had only a plastic sheet covering with no insulation over it to prevent the escape of warm air. Heating: Space heating is provided by a Monitor 441 oil fueled forced air heater. Controls: There are no separate building controls. Lighting: Interior lighting mainly consists of T12 fluorescent fixtures with magnetic ballasts as well as several 90 watt incandescent fixtures. There are no occupancy sensors in the building. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 10 Akiachak, AK Building Photos: Akiachak Early School Building Broken Window CFL Fixture Monitor 441 Heater Boarded-up Window Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 11 Akiachak, AK 11..55 AAKKIIAACCHHAAKK IINNDDIIAANN RREEOORRGGAANNIIZZAATTIIOONN AACCTT OOFFFFIICCEE Description: The Indian Reorganization Act (IRA) Office handles most of the village facility, maintenance, accounting, and day-to-day issues. The building was constructed in 2008 and is in good condition. Building operating hours are 0900 to 1700, Monday through Friday. General Conditions: This facility is a new building and, therefore, is in excellent condition compared with the other village buildings. Pictures of general conditions found during the field audit immediately follow this building description. Building Envelope: Due to the newness of the building, exterior and interior walls are in good condition. Windows and doors are in good condition as well, but an exterior door weather-stripping upgrade would be beneficial. Heating: An oil-fired Burnham boiler installed in 2007 provides the building with space heating. A combustion analysis at the time of the audit showed the boiler to be running at 81.7% combustion efficiency. The boiler is rated at 86.1% thermal efficiency and 127 MBH. Controls: Building zones are controlled by a series of mechanical thermostats throughout the facility. Lighting: Interior lighting is primarily T8 fluorescent fixtures with electronic ballasts. There are no occupancy sensors in the building. Domestic Water: Domestic water heating is provided by a 10-gallon electric Rheem Ruud water heater. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 12 Akiachak, AK Building Photos: Akiachak IRA Office Missing Weather-stripping Exterior and Windows in Excellent Condition Burnham Boiler Rheem Water Heater Taco Controller Attic Insulation Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 13 Akiachak, AK 11..66 AAKKIIAACCHHAAKK WWAASSHHEETTEERRIIAA Description: The Akiachak Washeteria is used by most of the villagers for their laundering needs. Typical operating hours are 1000 to 2200 hours, 7 days a week. General Conditions: The building was built in the 1970’s and overall is in fair condition, with much room for improvement. The basement of the facility is currently a hazardous area, and methane gas detection equipment is needed to inspect the area before anyone may enter. Only one of the boilers is currently operational. Pictures of general conditions found during the field audit immediately follow this building description. Building Envelope: The building is in fair condition, with evidence of aging and weathering on exterior walls. The metal roof is in fair condition, but shows no signs of leakage. Interior walls are in fair condition. Exterior doors are in poor condition and are in need of replacement. Exterior windows are in fair condition, and several are damaged. Heating: Two Weil-McLain fuel oil Model 976 boilers provide heating to the building. These boilers are discontinued and are listed as 81% thermally efficient. At the time of the audit, only one boiler was functional. The ignition switch of one boiler failed and was replaced with the ignition switch of the second boiler, rendering the second boiler inoperable. A combustion analysis found the functional boiler to be performing at 83.7% combustion efficiency. Controls: Building heating is controlled by mechanical thermostats. Lighting: Interior lighting consists mainly of T12 fluorescent fixtures with magnetic ballasts, though some fixtures have been retrofit to T8 fixtures. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 14 Akiachak, AK Building Photos: Akiachak Washeteria Building Exterior and Windows Circulating Pump Interior Lighting Functioning Weil-McLain Boiler Old Forced Air Heater Washing Machines Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 15 Akiachak, AK 11..77 AAKKIIAACCHHAAKK TTEEMMPPOORRAARRYY PPOOLLIICCEE SSTTAATTIIOONN Description: The current Akiachak Police Station was originally built in 1947 and was the old jail building. This building remains operational 24 hours a day, 7 days a week. General Conditions: The building is in poor condition overall, mostly due to its age and the effects of weathering over the years. Lighting has already been upgraded, but there are still opportunities for improvement. Pictures of general conditions found during the field audit immediately follow this building description. Building Envelope: The building is in poor condition due to aging and weathering. Both interior and exterior walls are in need of paint to avoid further damage. Exterior windows and doors are all in poor condition and need to be upgraded. Heating: Building heating is provided by a Monitor 2400 oil-fired force air heater. Controls: There are no separate building controls. Lighting: Interior lighting is a mixture of T8 fluorescent fixtures with electronic ballasts and 90 watt incandescent fixtures. There are no occupancy sensors in the building. Domestic Water: There is not a domestic hot water system in place at the Akiachak Police Station. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 16 Akiachak, AK Building Photos: Akiachak Police Station Bldg Interior – Lighting Retrofit, Monitor Heater Monitor 2400 Heater Exposed Wiring Poor Door Seal and Make-shift Weather-stripping Window Replaced With Board Poorly Fitted Window Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 17 Akiachak, AK 11..88 AAKKIIAACCHHAAKK SSCCHHOOOOLL Description: The Akiachak School is a combination elementary, middle school, and high school building with 198 students and 44 staff members. The building space is a combination of classroom, office, library, gymnasium, and cafeteria space. The school is one of the best maintained buildings in the village and is relatively new, constructed in 2005. Typical operational hours are from 0730 to 1700, Monday through Friday, but can sometimes run longer due to after school activities. General Conditions: As expected with a relatively new facility, the building is in good condition overall. No major faults or defects were found during the course of the walkthrough. The school has its own agreement with the Akiachak Community Electrical Company (see Section 2.0), but also houses its own backup generators with automatic changeover to be used during black outs or emergencies. Pictures of general conditions found during the field audit immediately follow this building description. Building Envelope: The building structure overall appears to be in good condition. The double-pane clear glass windows are in good condition, although there are a few damaged fixtures with cracks in the exterior panes. Doors are in good condition and have adequate weather-stripping. The roof is in good condition, but there appears to be some water leakage in one spot by the front entrance. Air Distribution: Two McQuay air handling units (AHUs) provide the school with its air distribution needs. Both AHUs are unit size 014 Vision models, rated at 4200 to 11,200 cubic feet per minute (cfm) each of airflow. At the time of the audit, these AHUs were well-maintained with clean air filters. Heating: Three Weil-McLain fuel oil Model 88 boilers provide heating to the building, all assumed to be identically sized model 888. At the time of the audit, one of these boilers was not operational, but has since been fixed and is now running. These boilers are listed as 82% thermally efficient and 84% combustion efficiency, using fuel oil #2. A combustion analysis found the functional boilers to be operating at 85.6% and 86.4% combustion efficiency. These higher efficiency ratings are due to the use of fuel oil #1 in Akiachak, which burns cleaner than fuel oil #2. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 18 Akiachak, AK Controls: Building zones are controlled by individual mechanical thermostats. At the time of the audit, one of these thermostats was set to 85°F. Energy savings could be realized by reducing this zone to a more reasonable set point. Lighting: Interior lighting consists primarily of T8 fluorescent lamps with electronic ballasts. Some areas are lit by T5 fixtures. All classrooms have motion sensors set up to turn off lights after 15 to 30 minutes of no activity. Domestic Water: Two 119 gallon Superstor ULTRA indirect fired water heaters provide the school with domestic hot water. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 19 Akiachak, AK Building Photos: Akiachak School Weil-McLain Boiler CAT Generator Insulated Piping Door Missing Weather-stripping Broken Boiler Controller Thermostat Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 20 Akiachak, AK 11..99 AAKKIIAACCHHAAKK TTRRIIBBAALL CCOOUURRTT OOFFFFIICCEE Description: The Akiachak Tribal Council Office also functions as the Akiachak court system. Building operating hours are from 0900 to 1700, Monday through Friday. General Conditions: The building was originally constructed in 1955. Due to its age and weathering, the building has become quite run down. The structure has also shifted over the years so much so that many of the interior doors no longer shut properly. Pictures of general conditions found during the field audit immediately follow this building description. Building Envelope: Building insulation is in poor condition; occupants can feel cold air coming into the building from the attic space and dropped ceiling. One occupant also mentioned cold air can be felt near the windows as well. There is also evidence of water leaking from the roof into the dropped ceiling. Heating: The original boilers of this building have been shut down because they were consuming a great deal of fuel. A Monitor 2400 oil stove heater now supplies the building with space heating. This oil stove, however, is not able to meet the space heating requirements of the facility, and many areas remain frigid all day. Some areas of the building have been closed off due to the cold conditions. Controls: The old mechanical thermostats that previously controlled space heating remain in the facility but no longer function due to the boilers being out of commission. Lighting: Interior lighting consists primarily of T8 fluorescent lamps with electronic ballasts. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 21 Akiachak, AK Building Photos: Akiachak Tribal Council Office Non-Weather-stripped Door Lighting Fixtures Mechanical Thermostat Monitor Heater Old Boiler Water Damage Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 22 Akiachak, AK 11..1100 AAKKIIAACCHHAAKK WWAATTEERR TTRREEAATTMMEENNTT PPLLAANNTT Description: The Akiachak Water Treatment Plant provides clean water to the entire city. The plant has two operators, but receives extra maintenance help when needed. The building is in good condition. Most of the equipment housed at the facility has been well-maintained, though there are several outdated pumps and motors that could be replaced with more efficient models. Typical operating hours are 0900 to 1700. General Conditions: The facility was constructed in 2000 and is in good condition overall. The plant has one well and two pumps for raw sewage. The water is then treated and distributed to the village through two loops. Pictures of general conditions found during the field audit immediately follow this building description. Building Envelope: The building structure overall appears to be in good condition. The standing seam metal roof appears to be in good condition. Doors are in good condition with adequate weather-stripping. The double-pane windows are in good condition. Heating: Two Weil-McLain fuel oil Model 88 boilers provide heating to the building; one boiler is Model 1088, while the other is Model 1188. These boilers are listed as 82% thermally efficient with 84% combustion efficiency, using fuel oil #2. Combustion analyses were performed on these boilers at the time of the audit and found the 1088 boiler to be functioning at 87.7% combustion efficiency, while the 1188 model was functioning at 83.7% combustion efficiency. These high efficiency ratings are due to the use of fuel oil #1 in Akiachak. There is also a XeteX Heat-X-Changer energy recovery unit in service at the facility. Controls: Building heating is controlled by mechanical thermostats. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 23 Akiachak, AK Lighting: Interior lighting consists of T8 fluorescent fixtures with electronic ballasts. During the audit, there was not sufficient time to verify the lamp types and wattages of the high bay fixtures. Domestic Water: Two 41-gallon Amtrol Boilermate indirect-fired water heaters provide the facility with domestic hot water. At the time of the audit, one heater was set to 98°F, while the other was set to 125°F. Vacuum System: Vacuum sewage systems are installed in bush Alaska due to permafrost and lack of available pitch. The system originates at the treatment facility and is in good operational condition. The vacuum pump motor runs 24/7 to meet village requirements. A higher efficiency motor will result in measurable savings for this system. Heat Trace System: To prevent system freeze ups, hot water heat trace pumps that run throughout the water and sewer distribution system originate from this facility. The system is manually controlled and runs at all times or at operators’ discretion. Limiting the operation of the heat trace based on outside air or ground temperatures will provide significant savings to the village. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 24 Akiachak, AK Building Photos: Akiachak Water Treatment Plant Fuel System Exterior Window Weil-McLain Boilers Treated Water System Treated Water Tanks Amtrol Boilermate Indirect-Fired Water Heaters Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 25 Akiachak, AK 11..1111 AAKKIIAACCHHAAKK EELLDDEERR AANNDD YYOOUUTTHH CCEENNTTEERR Description: The Akiachak Elder and Youth Center is a facility that is only used for special occasions like racing funds or ceremonies such as marriages or funerals. The building also contains a sauna, kitchen, and several bathrooms. General Conditions: The building was constructed in 1995 and was empty at the time of the audit. Because the building is only used for special occasions, the operator shuts down the furnace when there are no activities planned. The operator also believes that this furnace is using far more fuel than it should be. Pictures of general conditions found during the field audit immediately follow this building description. Building Envelope: The building structure overall appears to be in fair condition. The building exterior shows signs of weathering and age, and the interior walls have no paint. Several of the exterior windows are broken. The building is also poorly insulated. Heating: An oil-fired Olsen furnace rated 82.7% efficient provides the building with space heating. At the time of the audit, the building was quite cold with temperatures ranging from 40-50°F even though the furnace was operational. This is most likely due to several broken windows in the facility which allow air to escape. This may also be the reason that the furnace is consuming so much fuel, in conjunction with the poor insulation. Controls: Mechanical thermostats control building heating. Lighting: Interior lighting consists primarily of T8 fluorescent lamps with electronic ballasts. There are also several 90 watt incandescent fixtures. Domestic Water: A 50 gallon Bock water heater provides the building with domestic hot water. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 26 Akiachak, AK Building Photos: Akiachak Youth and Elder Center Fuel Tank Exterior Windows Bock Water Heater Building Interior Space Kitchen Area Broken Window Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 27 Akiachak, AK 22..00 UUTTIILLIITTIIEESS 22..11 EELLEECCTTRRIICCIITTYY The Village of Akiachak produces its own electricity via the Akiachak Native Community Company (ANCC). If a customer consumes less than 100 kWh per billing period, the ANCC charges a flat rate of $60. If a customer consumes more than 100 kWh per billing period, they pay the consumption rate listed below. Rate Per kWh (ANCC) $ 0.60 PCE Rate Per kWh $ 0.3539 The following buildings currently receive PCE funding:  Akiachak HUD Clinic  Akiachak Community Center  Akiachak Washeteria  Tribal Court Offices  Akiachak Water Treatment Plant  Akiachak Elder and Youth Center The Akiachak IRA Office and Jail and the Akiachak School buildings do not receive PCE funding at this time. The Yupiit School District (YSD) has a contract with the ANCC to provide electricity to the school at an annual cost of $275,000. The YSD, therefore, does not have an electric bill based on consumption. For calculations, Ameresco has assumed a consumption rate of $0.60 based on bills provided to Ameresco by the ANCC. Schools in the Alaskan bush normally do not receive PCE assistance, and this is also confirmed by the bills provided by the ANCC. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 28 Akiachak, AK 22..11..11 EElleeccttrriicciittyy UUssaaggee PPrrooffiilleess Akiachak Clinic Estimated Electric Usage 0 500 1000 1500 2000 Nov- 09 Dec- 09 Jan- 10 Feb- 10 Mar- 10 Apr- 10 May- 10 Jun- 10 Jul-10 Aug- 10 Sep- 10 Oct- 10 Nov- 10kWh Recreation Hall Estimated Electric Usage 0 100 200 300 400 500 Nov- 09 Dec- 09 Jan- 10 Feb- 10 Mar- 10 Apr- 10 May- 10 Jun- 10 Jul-10 Aug- 10 Sep- 10 Oct- 10 Nov- 10kWh Akiachak New IRA Office Estimated Electric Usage 0 200 400 600 800 1000 1200 1400 Nov- 09 Dec- 09 Jan- 10 Feb- 10 Mar- 10 Apr- 10 May- 10 Jun- 10 Jul-10 Aug- 10 Sep- 10 Oct- 10 Nov- 10kWh Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 29 Akiachak, AK Akiachak IRA Old Jail Estimated Electric Usage 0 100 200 300 400 500 600 700 Nov- 09 Dec- 09 Jan- 10 Feb- 10 Mar- 10 Apr- 10 May- 10 Jun- 10 Jul-10 Aug- 10 Sep- 10 Oct- 10 Nov- 10kWh Akiachak YSD New School Estimated Electric Usage 0 10000 20000 30000 40000 50000 60000 Nov- 09 Dec- 09 Jan- 10 Feb- 10 Mar- 10 Apr- 10 May- 10 Jun- 10 Jul-10 Aug- 10 Sep- 10 Oct- 10 Nov- 10kWh Akiachak Tribal Court Office Estimated Electric Usage 0 100 200 300 400 500 600 Nov- 09 Dec- 09 Jan- 10 Feb- 10 Mar- 10 Apr- 10 May- 10 Jun- 10 Jul-10 Aug- 10 Sep- 10 Oct- 10 Nov- 10kWh Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 30 Akiachak, AK Akiachak Water Plant Estimated Electric Usage 0 2000 4000 6000 8000 10000 12000 14000 Nov- 09 Dec- 09 Jan- 10 Feb- 10 Mar- 10 Apr- 10 May- 10 Jun- 10 Jul-10 Aug- 10 Sep- 10 Oct- 10 Nov- 10kWh Elder and Youth Center Estimated Electric Usage 0 100 200 300 400 500 600 Nov- 09 Dec- 09 Jan- 10 Feb- 10 Mar- 10 Apr- 10 May- 10 Jun- 10 Jul-10 Aug- 10 Sep- 10 Oct- 10 Nov- 10kWh 22..22 FFUUEELL The Village of Akiachak purchases its fuel (Fuel Oil #1) from Crowley at a rate of $3.5402/gallon. The Akiachak School has its own fuel contract with Crowley Petroleum Distribution, Inc. The school purchases its fuel from Crowley at a rate of $3.7300/gallon. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 31 Akiachak, AK 33..00 OOPPEERRAATTIIOONNSS//MMAAIINNTTEENNAANNCCEE PPRRAACCTTIICCEESS The village has a number of designated maintenance personnel that seem to possess the basic skills required to clean and maintain selected equipment. From Ameresco’s observations, if the equipment should fall into disrepair, the staff does not have the training or experience to repair the equipment per the manufacturer’s requirements and tends to piece together the equipment to maintain operation. Over time, the systems no longer function as required, which currently appears to be the case of most equipment and systems with in the village. Operations and maintenance is one area in energy services where improvement and training costs are lower than equipment replacement costs, and the energy efficiency return is high. During the site audit, Ameresco found that outside of general cleaning, most of the equipment is not maintained to meet standard manufacturers’ recommendations. Dirty filters, boilers in disrepair, systems altered, and control systems disconnected are a result of limited funding and lack of system training. This results in excessive energy use, premature equipment failure, and employee and resident discomfort. An annual system check by a qualified burner service technician to perform services such as boiler cleaning, boiler tune ups, system check out, and control system reviews will not only extend the overall life of the equipment, but improve occupant comfort as well as increase and maintain long term energy efficiency. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 32 Akiachak, AK 44..00 EENNEERRGGYY CCOONNSSEERRVVAATTIIOONN OOPPPPOORRTTUUNNIITTIIEESS The ECO matrix below summarizes the energy conservation opportunities identified and proposed during the site survey and baseline analysis. A description of each energy conservation opportunity follows the matrix. Please Note: This matrix applies to the initial proposal and the ECOs identified during that stage of the Akiachak project. There are some ECOs included in this section that were not performed, or the scope of work may have changed. Section 4 is for reference only. See Section 5 for updated project information. ECO No. ECO Description ECO MATRIX B=Building Envelope; C=Controls; E=Electrical; M=Mechanical; W=Water/Wastewater; R=Renewable AKIACHAK Clinic Community Hall Day Care Early Education IRA New Office Washeteria Police Station School Tribal Council Office Water Treatment Youth Center Controls C01 Thermostat Upgrade X X Electrical E01 Occupancy Sensors X X X X X X X X X X E02 Premium Efficiency Motors X E03 CFL Lighting Upgrade X X X X X X X X X X X Mechanical M01 Boiler Tune-Up X X X X M02 Boiler Upgrade X X X VEEP – INITIAL PROPOSAL (FINAL AUDIT REPORT) ECO Cost Savings SPB C01 - THERMOSTAT UPGRADE $ 2,842.00 $ 10,190.55 0.28 E01 - INSTALL OCCUPANCY SENSORS $ 22,220.00 $ 3,623.87 6.13 E02 - PREMIUM EFFICIENCY MOTORS UPGRADE $ 38,612.00 $ 4,930.40 7.83 E03 - CFL LIGHTING UPGRADE $ 189.00 $ 857.49 0.22 M01 - BOILER TUNE-UP $ 14,700.00 $ 84,418.14 0.17 M02 - BOILER UPGRADE $ 61,320.00 $ 16,484.75 3.72 DESIGN/AUDIT $ 2,500.00 AVAILABLE FUNDING $ 7,617.00 * Available funding allocated for travel expenses, shipping, additional labor, etc TOTAL $ 150,000.00 $ 120,505.21 1.24 Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 33 Akiachak, AK 44..11 EECCOO DDEESSCCRRIIPPTTIIOONNSS -- PPRROOPPOOSSEEDD Below are the descriptions of the Energy Conservation Opportunities (ECOs) that Ameresco analyzed for the Village of Akiachak. These include Ameresco’s initial project recommendations for the village. 44..11..11 CCoonnttrroollss OOppppoorrttuunniittiieess C01 – Thermostat Upgrade This ECO proposes replacing the outdated mechanical thermostats with 7-day programmable thermostats. The programmable thermostats would allow a building’s HVAC system to be scheduled to operate in comfortable conditions while occupied and allow for night set-backs. 44..11..22 EElleeccttrriiccaall OOppppoorrttuunniittiieess E01 – Occupancy Sensors Lighting systems are often left energized in unoccupied areas. This ECO proposes to install sensors to shut off lighting in unoccupied spaces. Common sensing technologies include infrared, ultrasonic, and audible sound, often combining multiple types of sensing in one unit to avoid shutting off lights in an occupied area. E02 – Premium Efficiency Motors This ECO proposes installing National Electrical Manufacturers Association (NEMA) premium efficiency motors to replace standard and high efficiency motors. There are various mechanical systems operating with inefficient motors throughout the base. Premium efficiency motors typically increase energy efficiency by 2-3%. E03 – CFL Lighting Upgrade This ECO proposes replacing the existing 90-watt incandescent lamps with 23-watt compact fluorescent (CFL) lamps. Most village facilities have several incandescent fixtures in need of replacement. This is a simple ECO with a relatively fast payback rate. 44..11..33 MMeecchhaanniiccaall OOppppoorrttuunniittiieess M01 – Boiler Tune-Up This ECO proposes a comprehensive re-commissioning of the boilers in each building to optimize system operations. Such efforts include:  Replace, repair, calibrate or install sensors or switches  Repair air linkages  Conduct combustion efficiency test services Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 34 Akiachak, AK  Clean combustion chambers and stacks M02 – Boiler Upgrade This ECO proposes replacing existing hot-water heating boilers with more energy efficient units. Many of the existing units in the village are original to the buildings they serve and have reached the end of their useful service life. Boilers employing modern technology can be installed to reduce energy consumption, improve system operations, and reduce maintenance costs. In some cases, this ECO proposes adding a storage tank to replace a building’s domestic water heater. 44..22 EECCOO DDEESSCCRRIIPPTTIIOONNSS –– NNOOTT PPRROOPPOOSSEEDD Below are the descriptions of the Energy Conservation Opportunities (ECOs) that Ameresco analyzed for the Village of Akiachak. The ECOs in Section 5.2 are those that did not pay back as quickly as in Section 5.1. For the results of the calculations, refer to Appendix B. 44..22..11 BBuuiillddiinngg EEnnvveellooppee OOppppoorrttuunniittiieess B01 – Door Weather-stripping Upgrade This ECO proposes applying weather stripping to exterior door perimeters to reduce air infiltration into the buildings. Many building doors have existing weather stripping material which is worn or missing. B02 – Thermal Insulation Upgrade This ECO proposes installing blown-in roof insulation on existing building envelopes to reduce energy consumption. Insulation can be added to roofs to increase or renew their insulating ratings (R-value). 44..22..22 EElleeccttrriiccaall OOppppoorrttuunniittiieess E01 – T8 Lighting Upgrade This ECO proposes replacing current T-12 fluorescent lighting and magnetic ballast with T-8 lamps and electronic ballasts. Post-light levels will be nearly equal or better to that of the existing lighting systems, Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 35 Akiachak, AK 55..00 FFIINNAALL CCOOSSTTIINNGG AANNDD CCHHAANNGGEESS FFRROOMM IINNIITTIIAALL RREEPPOORRTTIINNGG Due to the brief nature of these contracts and the high cost of travel to and from the villages, audits were conducted a quickly and efficiently as possible. Once engineers have left the villages, communication is strained at best, and gathering additional information is difficult. Because of this, assumptions must be made during the initial ECO assessments and project cost estimates. Occasionally, Ameresco engineers have found that previously identified projects have been externally funded from another source, but this information usually comes too late in the process. As a result of all these factors, some previously identified projects have been modified or abandoned. Final project costs and expected annual savings can be found in Appendix A. ECOs that were categorized as “Not Funded,” whether in the initial stages of the proposal or during construction, can be found in Appendix B. 55..11 CCHHAANNGGEESS FFRROOMM IINNIITTIIAALL RREEPPOORRTTIINNGG C01 – Programmable Thermostat Upgrade This ECO was delivered to the village but not installed. After the installation materials were delivered, they could not be located during the construction phase for installation. E01 – Occupancy Sensors Installed as planned in the Clinic, Community Hall, Day Care, IRA New Office, Police Station, and Youth Center. The Tribal Council, Water Treatment Plant, and Early Education buildings did not receive upgrades due to grounding issues. A total of 45 of 75 of the initially identified occupancy sensor locations were installed. E02 – Premium Efficiency Motors Upgrade Two of the 7 identified premium efficiency motor upgrades were installed as planned at the Water Treatment Plant. The remaining pumps were not installed due to the seizure of their internal components. E03 – CFL Lighting Upgrade Installed as planned. M01 – Boiler Tune-Up Installed as planned at the IRA New Office, School, and Water Treatment Plant. This ECO was not performed at the Clinic due to the installation of a new boiler. A boiler burner replacement at the Washeteria was added to the scope and performed by Ameresco technicians. M02 – Boiler Upgrade Installed as planned in the Day Care and Clinic buildings. The Tribal Council building was removed from the scope of this project because the building was planned to be demolished in the summer of 2012. The AEA approved this project change when Ameresco learned of the planned demolition. Alaskan Village Audit Final Report Energy Audit of Village Buildings Ameresco VEEP Audit - Village of Akiachak Page 36 Akiachak, AK 55..22 FFUUNNDDIINNGG AALLLLOOCCAATTIIOONN SSUUMMMMAARRYY TTAABBLLEESS VEEP ECOS - PROJECT COSTS & EXPECTED SAVINGS - AKIACHAK ECO Cost Savings SPB C01 - THERMOSTAT UPGRADE $ 3,201.97 N/A N/A E01 - INSTALL OCCUPANCY SENSORS $ 21,238.10 $ 2,167.07 9.80 E02 - PREMIUM EFFICIENCY MOTORS UPGRADE $ 30,838.20 $ 704.34 43.78 E03 - CFL LIGHTING UPGRADE $ 2,588.84 $ 857.49 3.02 M01 - BOILER TUNE-UP $ 10,061.31 $ 23,482.58 0.43 M02 - BOILER UPGRADE $ 74,611.28 $ 16,484.75 4.53 AVAILABLE FUNDING $ 7,460.31 * Available funding allocated to the village of Kotlik TOTAL GRANT $150,000.00 VILLAGE TOTAL $142,539.69 $ 43,696.23 3.26 APPENDIX A VEEP PROJECT COSTS & EXPECTED SAVINGS C01 - THERMOSTAT UPGRADE Building # of Thermostats Installed Cost Per Thermostat Total Cost Electric kWh Savings Fuel mmBtu Savings Total mmBtu Savings Equivalent Fuel Gallons Savings Annual kWh Cost Savings Annual Equivalent Fuel Cost Savings Total Annual Savings Simple Payback Clinic 2 $457.42 $914.85 N/A N/A N/A N/A N/A N/A N/A N/A Day Care 1 $457.42 $457.42 N/A N/A N/A N/A N/A N/A N/A N/A IRA New Office 2 $457.42 $914.85 N/A N/A N/A N/A N/A N/A N/A N/A Washeteria 2 $457.42 $914.85 N/A N/A N/A N/A N/A N/A N/A N/A E01 - INSTALL OCCUPANCY SENSORS Building # of Fixtures Price Per Fixture Total Cost Electric kWh Savings Electric kW Savings Equivalen t mmBtu Savings Equivalent Fuel Gallons Savings Annual kWh Cost Savings Annual Equivalent Fuel Cost Savings Total Annual Savings Simple Payback Clinic 17 $283.17 $4,813.97 1,289.60 0.00 4.40 93.58 $456.39 $331.29 $787.68 10.55 Community Hall 3 $283.17 $849.52 781.24 0.00 2.67 56.69 $276.48 $200.69 $477.17 3.07 Day Care 10 $283.17 $2,831.75 1,670.14 0.00 5.70 121.20 $591.06 $429.05 $1,020.11 4.79 Early Education* 2 $283.17 $566.35 N/A N/A N/A N/A N/A N/A N/A N/A IRA New Office 9 $283.17 $2,548.57 1,923.69 0.00 6.57 139.60 $680.79 $494.18 $1,174.98 3.74 Washeteria* 12 $283.17 $3,398.10 N/A N/A N/A N/A N/A N/A N/A N/A Police Station 1 $283.17 $283.17 218.40 0.00 0.75 15.85 $77.29 $56.11 $133.40 3.66 Tribal Council Office* 9 $283.17 $2,548.57 N/A N/A N/A N/A N/A N/A N/A N/A Water Treatment* 7 $283.17 $1,982.22 N/A N/A N/A N/A N/A N/A N/A N/A Youth Center 5 $283.17 $1,415.87 240.34 0.00 0.82 17.44 $85.06 $61.74 $146.80 16.65 *Material delivered to these buildings but not installed by Ameresco. E02 - PREMIUM EFFICIENCY MOTORS UPGRADE Building # of Motors Price Per Motor Total Cost Electric kWh Savings Electric kW Savings Equivalen t mmBtu Savings Equivalent Fuel Gallons Savings Annual kWh Cost Savings Annual Equivalent Fuel Cost Savings Total Annual Savings Simple Payback Water Treatment 2 Varies w/HP $30,838.20 1,990.23 0.51 6.79 144.43 $704.34 $511.28 $1,215.62 43.78 E03 - CFL LIGHTING UPGRADE (90w Incandescent to 23w CFL) Building Existing Lamp Wattage Number of Lamps Total Cost Electric kWh Savings Electric kW Savings Equivalen t mmBtu Savings Equivalent Fuel Gallons Savings Annual kWh Cost Savings Annual Equivalent Fuel Cost Savings Total Annual Savings Simple Payback All Over Village 90 18 $2,588.84 2,422.96 1.21 8.27 175.83 $857.49 $655.85 $1,513.34 3.02 M01 - BOILER TUNE-UP Building Number of Boilers Increase in Efficiency Total Cost Electric kWh Savings Fuel mmBtu Savings Total mmBtu Savings Equivalent Fuel Gallons Savings Annual kWh Cost Savings Annual Equivalent Fuel Cost Savings Total Annual Savings Simple Payback IRA New Office 1 3%$1,676.88 0.00 37.61 37.61 268.61 $0.00 $950.87 $950.87 1.76 School 3 3%$5,030.65 0.00 474.42 474.42 3,388.70 $0.00 $12,639.87 $12,639.87 0.40 Water Treatment 2 2%$3,353.77 0.00 391.20 391.20 2,794.30 $0.00 $9,891.84 $9,891.84 0.34 M02 - BOILER UPGRADE Building # of Boilers to Replace New Boiler Efficiency (AFUE) Total Cost Electric kWh Savings Fuel mmBtu Savings Total mmBtu Savings Equivalent Fuel Gallons Savings Annual kWh Cost Savings Annual Equivalent Fuel Cost Savings Total Annual Savings Simple Payback Day Care 1 88.00%$32,110.94 0.00 146.88 146.88 1,049.17 $0.00 $3,714.04 $3,714.04 8.65 Washeteria 1 88.00%$10,389.40 0.00 351.65 351.65 2,511.76 $0.00 $8,891.65 $8,891.65 1.17 Clinic 1 88.00%$32,110.94 0.00 153.41 153.41 1,095.78 $0.00 $3,879.06 $3,879.06 8.28 Note: The reported simple paybacks are based on the type of ECO listed. For example, electrical ECOs only use the Annual kWh Cost Savings column to calculate the SPB, even though the Annual Equivalent Fuel Cost Savings is still reported. APPENDIX A - VEEP PROJECT COSTS & EXPECTED SAVINGS - AKIACHAK APPENDIX B ECO CALCULATION RESULTS – NOT FUNDED B01 - WEATHERSTRIPPING Building # of Doors Price Per Door Total Cost Electric kWh Savings Fuel mmBtu Savings Total mmBtu Savings Equivalent Fuel Gallons Savings Annual kWh Cost Savings Annual Equivalent Fuel Cost Savings Simple Payback Clinic 3 $560.00 $2,352.00 0.00 6.11 6.11 43.61 $0.00 $154.40 15.23 Day Care 3 $560.00 $2,352.00 0.00 6.76 6.76 48.29 $0.00 $170.95 13.76 IRA New Office 1 $560.00 $784.00 0.00 2.05 2.05 14.65 $0.00 $51.85 15.12 School 6 Varies w/Size $4,704.00 0.00 19.70 19.70 140.73 $0.00 $498.19 9.44 Water Treatment 7 Varies w/Size $5,488.00 0.00 51.42 51.42 367.29 $0.00 $1,300.19 4.22 Youth Center 1 $560.00 $784.00 0.00 2.05 2.05 14.67 $0.00 $51.94 15.09 B02 - THERMAL INSULATION UPGRADE Building Current Insulation Proposed Insulation Total Cost Electric kWh Savings Fuel mmBtu Savings Total mmBtu Savings Equivalent Fuel Gallons Savings Annual kWh Cost Savings Annual Equivalent Fuel Cost Savings Simple Payback Clinic R-20 R-39 $6,666.24 0.00 9.64 9.64 68.84 $0.00 $243.70 27.35 Community Hall R-20 R-39 $3,124.80 0.00 4.30 4.30 30.69 $0.00 $108.66 28.76 Day Care R-20 R-39 $1,736.00 0.00 2.78 2.78 19.85 $0.00 $70.27 24.71 Early Education R-20 R-39 $1,736.00 0.00 2.44 2.44 17.45 $0.00 $61.79 28.10 IRA New Office R-20 R-39 $6,076.00 0.00 8.78 8.78 62.75 $0.00 $222.13 27.35 Washeteria R-20 R-39 $10,416.00 0.00 15.24 15.24 108.85 $0.00 $385.34 27.03 Police Station R-20 R-39 $2,499.84 0.00 3.52 3.52 25.13 $0.00 $88.97 28.10 Tribal Council Office R-20 R-39 $9,999.36 0.00 14.07 14.07 100.53 $0.00 $355.89 28.10 E01 - T8 LIGHTING UPGRADE Building # of Fixtures Price Per Fixture Total Cost Electric kWh Savings Electric kW Savings Equivalent mmBtu Savings Equivalent Fuel Gallons Savings Annual kWh Cost Savings Annual Equivalent Fuel Cost Savings Simple Payback Early Education 4 Varies w/# of lamps $1,153.60 128.13 1.06 0.44 9.30 $45.34 $32.92 25.44 Washeteria 30 Varies w/# of lamps $8,622.60 564.35 7.75 1.93 40.95 $199.72 $144.98 43.17 APPENDIX B - ECO CALCULATION RESULTS - NOT FUNDED - AKIACHAK Note: The reported simple paybacks are based on the type of ECO listed. For example, electrical ECOs only use the Annual kWh Cost Savings column to calculate the SPB, even though the Annual Equivalent Fuel Cost Savings is still reported. APPENDIX C EQUATIONS USED IN CALCULATIONS ECO Equations B01 1. Door Leakage Area (in2) = Door Area x Door Leakage Factor 2. Specific Infiltration (CFM/in2) = [ (Stack Coefficient x ΔT) + (Wind Coefficient x [Wind Speed]2 )]1/2 3. ΔT = Heating Setpoint Temp - Bin Temp 4. Air Infiltration (CFM) = Specific Infiltration x Door Leakage Area 5. Heat Loss Rate (Btu/hr) = 1.08 x Air Infiltration x ΔT 6. Heating Load (mmBtu) = Heat Loss Rate x Bin Hours / 1,000,000 7. Energy Savings = Baseline - Proposed Note: This ECO was completed using the RETscreen program. B02 Note: This ECO was completed using the RETscreen program. Inputs are R-values reported in the appendices as well as the insulation square footage. C01 Note: This ECO is based on bin data, occupancy, heating peak loads, boiler efficiency, and an assumed night setback. Baseline Usage = (Peak Load x Occupied Load Profile x All Hours) / Boiler Eff. ECM Usage = [(Peak Load x Occupied Load Profile x Occupied Hours) + (Peak Load x Unoccupied Load Profile x Unoccupied Hours)] / Boiler Eff. mmBtu Saved = Baseline Usage - ECM Usage Space Heating Savings (MMBtu/yr) = (Baseline Space Heating) x [(Occupied Bin Hours)/(Total Bin Hours)] x (8% savings) E01 1. Baseline Usage (kWh) = (Existing Fixture Wattage) x (Qty) x (Existing Hours) / (1,000) 2. Proposed Usage (kWh) = (Existing Fixture Wattage) x (Qty) x [(Existing Hours) - (Hours Reduced)] / (1,000) 3. Annual Energy Savings = (Baseline Energy Usage) - (Proposed Energy Usage) 4. Annual Cost Savings = (Energy Savings) x (Energy Cost) E02 1. Existing/Proposed Motor Demand (kW) = (Motor HP) x (Load Factor) x (0.746 kW/HP)/ Motor Efficiency 2. Existing/Proposed Motor Consumption (kWh) = (Motor Demand) x (Diversity Factor) x (Annual Hours) 3. kW Savings = [(Baseline kW) - ( Proposed kW)] x (12 Months) 4. kWh Savings = (Baseline kWh) - ( Proposed kWh) 5. Energy Cost Savings = Energy Savings (kW or kWh) x (Energy Unit Cost) E03 1. Baseline Demand (kW) = (Existing Fixture Wattage) x (Qty) X (12 Months) / (1,000) 2. Baseline Usage (kWh) = (Baseline Demand) x (Fixture Hours) 3. Proposed Demand (kW) = (Proposed Fixture Wattage) x (Qty) X (12 Months) / (1,000) 4. Proposed Usage (kWh) = (Proposed Demand) x (Fixture Hours) 5. Annual Energy Savings = (Baseline Energy Usage) - (Proposed Energy Usage) 6. Annual Cost Savings = (Energy Savings) x (Energy Cost) M01 Savings (MBtu) = (Boiler Input Rating) x ((1/Tested Efficiency)-(1/Desired Efficiency)) x (Hours per Year) Savings ($) = (MBtu Savings) x (Energy Cost) M02 Savings (MBtu) = (Boiler Input Rating) x ((1/Old Boiler Efficiency)-(1/New Boiler Efficiency)) x (Hours per Year) Savings ($) = (MBtu Savings) x (Energy Cost) APPENDIX C - EQUATIONS USED IN CALCULATIONS - AKIACHAK FOR E01 - Hours Reduced From the Energy Management Handbook, Turner 4th Edition Table 13.8 p361 Savings from installing occupancy sensors are as follows: Offices (Private) 25-50% Offices (Open Spaces) 20-25% Rest Rooms 30-75% Corridors 30-40% Storage Areas 45-65% Meeting Rooms 45-65% Conference Rooms 45-65% Warehouses 50-75% For E02 Load factor assumed to be 80% except in some cases. Vacuum pumps assumed 100% load factor. Diversity factor assumed to be 95%. Tables 2A and 2B - 1995 Commercial Building Energy Consumption 2003 ASHRAE Applications Handbook, Chapter 35 Building Characteristics Space Heat Cool Ventilation Education 32.8 4.8 1.6 Food sales 27.5 13.4 4.4 Food service 30.9 19.5 5.3 Health care 55.2 9.9 7.2 Lodging 22.7 8.1 1.7 Mercantile and service 30.6 5.8 2.5 Office 24.3 9.1 5.2 Public assembly 53.6 6.3 3.5 Public order and safety 27.8 6.1 2.3 Religious worship 23.7 1.9 0.9 Storage/Warehouse 15.7 0.9 0.3 Vacant 11.9 0.6 0.3 Energy End-Use (1,000 Btu/ft 2-yr) APPENDIX D POST INSTALLATION PHOTOS APPENDIX D – POST INSTALLATION PHOTOS - AKIACHAK New Boiler Installation at the Day Care Boiler Installation at the Clinic Installed Occupancy Sensor