City of Golden – Measurement and Verification Report

City of Golden – Measurement and Verification Report Performance period: August 2009- 2010 Date: June 9h, 2011

CITY OF GOLDEN – YEAR 1 M&V REPORT

1. EXECUTIVE SUMMARY

2. BACKGROUND

3. DETAILED MEASUREMENT AND VERIFICATION FIM 9.01– Lighting Upgrades FIM 9.02 – Pool Lighting Upgrades FIM 9.03 – Exterior Lighting Upgrades FIM 17.09 – Solar Pool Heating & Pool Systems Optimization FIM 3.09 – Replace Rooftop Air Handlers FIM 3.13 – Heating & Building Comfort Optimization FIM 3.04 – Replace Inlet Guide Vanes with VFDs FIM 5.12 – Controls Upgrade: Centralization FIM 16.05 – Vending Misers FIM 12.01 – Domestic Hot Water Optimization

4. APPENDIX A.1, A.2, A.3 Change Order Summaries

5. APPENDIX C Rate Information

6. APPENDIX D FIM 17.09 Supporting Information

7. APPENDIX E FIM 3.09 Supporting Information

8. APPENDIX F FIM 3.13 Supporting Information

9. APPENDIX G FIM 3.04 Supporting Information

10. APPENDIX H FIM 5.12 Supporting Information

11. APPENDIX I FIM 16.05 & 12.01 Supporting Information

Contents


1. Executive SummarySummary of Proposed and Verified Energy and Cost Savings The Guaranteed Energy Savings for the Year 1 performance period are 137,638 kWh of electrical consumption, 130 kW of annual demand reduction, and 70,497 therms of heating, for a total energy savings of 7,519 MMBtu.

The guaranteed savings figures have been adjusted relative to that shown in contract Schedule C for the three change orders issued after contract. The first change order removed most of the scope for lighting upgrades at the Pioneer Museum, and a minor change to add photocell control of lighting at the Community Center pool. The second change order removed FIM 5.05 for DDC optimization and set-back at City Hall. The third change order was to remove scope to upgrade to high efficiency motors at the Community Center pool pumps. See Appendix A.1, A.2, and A.3 for details on these approved change orders.

Based on the revised savings adjustments (taking into account relevant change orders), at the first year performance guarantee period utility rates (base rates with no escalation applied for first year), the equivalent guaranteed energy cost savings are $77,729. In addition, the stipulated guaranteed Operation & Maintenance cost savings are $5,114, for a total first year guaranteed cost savings of $82,843.

The verified annual savings for the first performance guarantee period from August 9th, 2009 through August 8th, 2010 are 525,852 kWh of electrical consumption, 386 kW annual demand, and 47,724 therms of gas, for a total energy savings of 6,567 MMBtu. At the first year performance guarantee period utility rates, (the higher of the base rates or actual average Year 1 rates) the equivalent verified energy cost savings is $78,080. In addition, the O&M cost savings (with no escalation for year 1) is $5,144, for a total first year verified project cost savings of $83,194.

The proposed and verified comparison information above is summarized in Table 1 and Table 2 below.

Savings Adjustments There were several changes to operations and revisions to scope that differ from proposed design documentation used for the original savings calculations. However, even with corrections and operational changes, the savings continue to exceed the total guaranteed amount. The total annual difference in savings between adjusted guaranteed values and verified performance comes to an excess in savings of $471 per year. The following is a brief summary of findings during measurement & verification activities. Additional details and recommendations can be found in the individual M&V Details sections for each facility improvement measure.

FIM 9.01 Lighting Upgrades (Multiple)

There were several areas identified during the verification activities where lighting controls were not performing as intended. It is the responsibility of the City of Golden to inform McKinstry of such operational conditions in order to experience the energy savings guaranteed. Details of specific areas of concern can be found in the Detailed M&V section for this FIM.

FIM 9.02 Pool Lighting Upgrades (Community Center)

During the verification it was determined that there was a difference in the total fixture count between the design intent and as-built conditions. Additionally, the initial proposal for use of daylighting controls for all pool fixtures was not implemented; therefore the originally calculated savings needs to be corrected. The photocell controlled fixtures above the leisure pool windows have also been disabled at the sensor. The energy savings calculation for verified savings has been adjusted to account for these post-retrofit as-built conditions.

1. Executive Summary



FIM 17.09 Solar Thermal System & Pool Air Handler Optimization (Community Center)

There are changes that have been made operationally and issues identified with the original savings calculations. Due to changes in the originally stipulated factors, the proposed increases in electrical demand and consumption were overestimated. There have also been changes made to the outside air control on the air handler that have likely reduced the proposed gas use savings. An issue was also found with the operation of de-humidification compressors at low ambient temperatures that may be preventing full heat recovery and reducing gas savings. Fortunately, the total expected savings after correcting for the savings calculation factors, and system operational changes, is higher than originally proposed.

FIM 3.09 Air Handler 1- 4 Replacement & Controls Optimization (Community Center)

The measured minimum outside air setting on the air handlers for this measure is not in agreement with the factors used in the proposed savings calculations. The final minimum outside air setting on AHU-4 is much higher than originally stipulated. The change to higher outside air ratio was set during test and balance work and has been accounted for in the adjusted energy calculation.

FIM 3.13 Boiler Upgrade & Thermostat Setback (Public Works & Water Treatment)

This FIM involved reducing the temperature set point on several manually operated thermostats throughout the public works facilities. The actual agreed on scope for thermostats to be set-back was not clearly documented. Only those thermostats in the Flocculation Tank building are labeled with proposed set points that appear to be followed. It is also likely the thermostats are left set to a higher temperature than proposed after work being done in the building is complete. As a result of the difference in thermostat set-back scope, the original calculation has been adjusted to account for the expected difference in savings.

FIM 3.04 Replace Inlet Guide Vanes with VFDs (City Hall)

The pre and post retrofit measured fan speeds do not agree with factors used in the savings calculations. The calculations assume that baseline and proposed fan load profile includes speeds less than 50%. This is incorrect as the baseline and the post retrofit trend data indicate the minimum fan speed is in the 60-70% range on one AHU and 75-85% on the other. The proposed case savings calculations for the City Hall AHU also assumed the unit would be shut-down at night based on the originally proposed FIM for this facility. However, the unit is currently operating 24 hours a day, and therefore in total, the savings for this measure will be higher than proposed. The expected savings were recalculated based on these current operational characteristics.

FIM 5.12 Controls Upgrade (Tony Grampsas Gym)

Savings for this measure depended directly on control of both air handlers from a central occupancy sensor that was to shut-down the air handlers when unoccupied and go to set-back/set-up heating/cooling set points. Although this is an option E M&V item and all values are stipulated, trend data was collected and identified that one air handler is still frequently cycling on and off during unoccupied periods. This issue was also identified by the City and the controls contractor who performed the installation is being requested to correct the sensor function.

Performance and O&M Issues Some of the Operational and Maintenance recommendations include but are not limited to the following. Details of specific issues and recommendations can be found in the Detailed M&V sections for each FIM:

Correct various lighting controls issues at the City Hall/Police and Community Center facilities.

Restore daylighting controls for fixtures over the Community Center leisure pool window area.

Reduce the outside air setting on Community Center AHU-4 if possible.



Fix AHU-5 compressor operation at low ambient temperature conditions. Determine if minimum OSA ratio can be reduced back to originally proposed settings.

Improve the process for maintaining unit heater temperature set points as recommended at Public Works facilities.

Implement originally recommend operating schedule and unoccupied set-back/set-up for the City Hall air handler unit (AHU).

Further investigation of controls optimization on the AHUs serving the City Hall / Police facility

Correct occupancy control of the South AHU at Tony Grampsas Gym.

ENERGY, WATER, AND O&M RATE DATA The contract year schedule as determined in contract Schedule C and Schedule D are shown in detail below. The first year began at the construction project notice of acceptance which occurred on August 9th, 2009.

The agreed upon baseline rates, escalated values, and current year rates are summarized in Appendix C. Contractual escalation rates are specified in Performance Contract Schedule E. Electric and gas utility rates are escalated at 3.13% and 4.30% respectively each year during the 10 year performance contract. The following tables summarize current year contractually agreed upon rates based on the higher of escalated rate or current year utility rates:

Verified Savings to Date The verified savings to date includes the sum of this M&V performance year and any prior performance years. Since this is the first performance guarantee M&V report, the verified savings to date is equal to the Year 1 verified savings. Therefore, data from Table 3 below is identical to Table 2 for Year 1 only. Figures highlighted in red text in Table 2 indicate those values that have changed relative to proposed Year 1 guaranteed savings figures.

Contract Years Start Date End Date1 8/9/2009 8/8/20102 8/9/2010 8/8/20113 8/9/2011 8/7/20124 8/9/2012 8/8/20135 8/9/2013 8/8/20146 8/9/2014 8/8/20157 8/9/2015 8/7/20168 8/9/2016 8/8/20179 8/9/2017 8/8/2018

10 8/9/2018 8/8/2019

Rates: (Electric / Gas) C / CG Rates: (Electric / Gas) SG / CG Rates: (Electric / Gas) SG / CG-T

Contractual kWh Rate 0.0965$ Contractual kWh Rate 0.0435$ Contractual kWh Rate 0.0435$

Contractual kW Rate -$ Contractual kW Rate 15.2200$ Contractual kW Rate 15.2200$

Contractual Therm Rate 1.0130$ Contractual Therm Rate 1.0130$ Contractual Therm Rate 0.8354$



FIM # Bldg FIM Name

Total Energy Savings

(MMBtu/yr)

Electric Energy Savings (kWh/yr)

Electric Demand Savings (kW/yr)*

Natural Gas Savings**(therms)

Total Energy and Water

Cost Savings, Year 1 ($/yr)

Other Energy Related O&M Cost Savings, Year 1 ($/yr)

Total Cost Savings,

Year 1 ($/yr)

9.01 Lighting Upgrade All 899.5 294,011 406 -1,040 $26,510 $1,178 $27,688

9.02 Pool Lighting Golden Community Center 364.0 122,642 147 -546 $7,940 $145 $8,085

9.03 Exterior Lighting All 0.0 0 0 0 $0 $0 $0

17.09 Solar Pool Heating and Pool Systems Optimization

Golden Community Center 4462.7 -449,155 -590 59,957 $21,566 $0 $21,566

3.09 Replace Rooftop Air Handlers Golden Community Center 838.2 89,924 167 5,313 $10,898 $0 $10,898

3.13 Heating & Building Comfort Optimization and Improvements

Public Works Building 574.9 0 0 5,749 $5,824 $3,791 $9,615

3.04 Replace Inlet Guide Vanes with Electronic Variable Frequency Drives

Golden City Hall 199.6 58,493 0 0 $2,544 $0 $2,544

5.12 Controls Upgrade: Centralization Tony Grampsas Gymnasium 141.0 10,117 0 1,064 $1,518 $0 $1,518

16.05 Vending Misers All 39.6 11,606 0 0 $929 $0 $929

12.01 Domestic Hot Water System Optimization

Golden City Hall 0.0 0 0 0 $0 $0 $0

7,519 137,638 130 70,497 $77,729 $5,114 $82,843Total Savings

Table 1. Proposed Year 1 Annual Savings Overview

Year 1 Guaranteed Energy Savings: 7519 MMBtuYear 1 Guaranteed Equivalent Energy Cost Savings***: $77729

Year 1 Equivalent Total Cost Savings: $82843

NotesMMBtu = 1,000,000 BtuTherm = 100,000 BtukWh = 3,413 Btu* Annual electric demand savings (kW/yr) is the sum of the monthly demand savings.** Units for fuels and water are as denoted in the bills*** Guaranteed equivalent energy cost savings for Year 1 is calculated by multiplying the guaranteed energy savings by the utility rate in effect for year 1 as described in the contract.If energy is reported in units other than MMBtu, provide a conversion factor to MMBtu for link to delivery order schedules (e.g., 0.003413 MMBtu/kWh).Guaranteed cost savings and the proposed savings for each FIM are included in the M&V Plan and Savings Calculation Methods.



FIM # Bldg FIM Name

Total Energy Savings

(MMBtu/yr)

Electric Energy Savings (kWh/yr)

Electric Demand Savings (kW/yr)*

Natural Gas Savings**(therms)


Cost Savings, Year 1 ($/yr)

Other Energy Related O&M Cost Savings, Year 1 ($/yr)

Total Cost Savings,

Year 1 ($/yr)

9.01 Lighting Upgrade All 884 288,621 406 -1,013 $26,032 $1,178 $27,210

9.02 Pool Lighting Golden Community Center 295 99,490 141 -448 $6,103 $145 $6,248

9.03 Exterior Lighting All 0 0 0 0 $0 $0 $0


Golden Community Center 4,365 -34,886 -295 44,843 $31,452 $0 $31,452

3.09 Replace Rooftop Air Handlers Golden Community Center 225 86,289 134 -698 $5,209 $0 $5,209


Public Works Building 451 0 0 4,508 $4,566 $3,791 $8,357


Golden City Hall 238 69,673 0 0 $3,031 $0 $3,031

5.12 Controls Upgrade: Centralization Tony Grampsas Gymnasium 70 5,058 0 532 $759 $0 $759

16.05 Vending Misers All 40 11,606 0 0 $929 $0 $929

12.01 Domestic Hot Water System Optimization

Golden City Hall 0 0 0 0 $0 $0 $0

6,567 525,852 386 47,724 $78,080 $5,114 $83,194

Table 2. Verified Savings for Performance Year 1

NotesMMBtu = 1,000,000 BtuTherm = 100,000 BtukWh = 3,413 Btu* Annual electric demand savings (kW/yr) is the sum of the monthly demand savings.** Units for fuels and water are as denoted in the billsIf energy is reported in units other than MMBtu, provide a conversion factor to MMBtu for link to delivery order schedules (e.g., 0.003413 MMBtu/kWh).

Total Savings



FIM # Bldg FIM Name

Total Energy Savings (MMBtu)

Electric Energy Savings (kWh)

Electric Demand Savings

(kW)*

Natural Gas Savings**


Cost Savings To Date

Other Energy Related O&M Cost Savings

To Date

Total Cost Savings To

Date

9.01 Lighting Upgrade All 883.8 288,621 406 -1,013 $26,032 $1,178 $27,210

9.02 Pool Lighting Golden Community Center 294.8 99,490 141 -448 $6,103 $145 $6,248

9.03 Exterior Lighting All 0.0 0 0 0 $0 $0 $0


Golden Community Center 4365.2 -34,886 -295 44,843 $31,452 $0 $31,452

3.09 Replace Rooftop Air Handlers Golden Community Center 224.7 86,289 134 -698 $5,209 $0 $5,209


Public Works Building 450.8 0 0 4,508 $4,566 $3,791 $8,357


Golden City Hall 237.8 69,673 0 0 $3,031 $0 $3,031

5.12 Controls Upgrade: Centralization Tony Grampsas Gymnasium 70.5 5,058 0 532 $759 $0 $759

16.05 Vending Misers All 39.6 11,606 0 0 $929 $0 $929

12.01 Domestic Hot Water System Optimization Golden City Hall 0.0 0 0 0 $0 $0 $0

6,567 525,852 386 47,724 $78,080 $5,114 $83,194Total Savings

Table 3. Verified Savings for Performance Period To Date: M&V Year 1 to Year 1


2. BackgroundProject Background On October 18, 2007, McKinstry was contracted to perform a Technical Energy Audit (TEA) with the intent of developing a Performance Contracting Project with the City of Golden, Colorado. The TEA was delivered to The City of Golden on August 28th, 2008. The City proceeded to engage McKinstry in a performance contract to provide $91,094 in 1st year annual avoided utility cost at a total project implementation cost of $1,183,691. Substantial completion marking the beginning of the performance guarantee period was reached in August of 2009. This report documents the findings and recommendations of McKinstry based on the Year 1 Measurement & Verification activities.

Brief Project and FIM Descriptions The ESPC Contract combined Facility Improvement Measures (FIMs) that would generate energy savings without direct input or action from City of Golden personnel and those that would only generate energy savings if the city personnel strictly adhered to recommended operations and maintenance practices. The following briefly describes all the FIMs that were implemented under this project:

FIM 9.01 Lighting Upgrades – All Buildings (Revised Scope)

Lighting in many of the City owned facilities was provided by older T12 fluorescent and incandescent fixtures. Many areas were found to be good candidates for occupancy sensor controls. This FIM involved updating the lighting in City owned facilities through a combination of fixture replacement, lamp/ballast retrofits, and installing lighting controls to minimize annual operating hours where feasible. Light upgrades were performed at the following facilities:

• Astor House • Astor Public Restroom • Clear Creek RV Park • Fire Station #4 • Fossil Trace Golf Course • Golden Cemetery • Golden City Hall • Golden Community Center • Lyons Park • Parfet Park • Pioneer Museum • Public Works Building / Water Treatment Plant • Splash Water Park • Tony Grampsas Gymnasium • Ulysses Park • Vehicle Maintenance Building

Changes to the originally proposed scope include the elimination of some upgrades at the Pioneer Museum, and addition of photocell control of several fixtures along windows in the Community Center leisure pool area.

FIM 9.02 Lighting Upgrade - Community Center Pool

This FIM involved replacing the existing fixtures with a combination of wet location rated fluorescent and electronically ballasted pulse start metal halide fixtures and installing photocell controls to reduce lighting loads when sufficient daylight is present.

FIM 9.03 Upgrade Exterior Lighting – Multiple Buildings

The existing exterior building mounted lighting fixtures at several facilities produced a great deal of stray light and did not comply with Golden’s Dark Sky Initiative. This FIM involved


2. Background

upgrading these fixtures to meet compliance with Golden’s Dark Sky Initiative.

FIM 17.00 Solar Pool Heating and Pool Systems Optimization - Community Center Pool (Revised Scope)

This FIM involved installing solar thermal collectors to the roof to provide heat to the pools; and re-commissioning and optimizing the operation of the pool dehumidifier unit (PDU) to restore efficient operation. The PDU compressor heat recovery function was corrected to allow waste heat use for pool water and air heating requirements. The on/off controls for spa jet pumps were replaced with timer based controls to prevent continuous operation.

Changes to the originally proposed scope included elimination of plans to upgrade all pool water circulation pumps with high efficiency motors.

FIM 3.09 Replace Rooftop Air Handlers - Community Center

This FIM involved replacing RTUs 1 through 4 with high efficiency package air handling units having improved heating and cooling efficiency and economizer capability. In addition, this measure expanded the updated direct digital control system on these air handlers to the terminal zones.

FIM 3.13 Heating & Building Comfort Optimization – Public Works

This FIM involved replacing the existing boiler with a new, high efficiency boiler. It also involved a reduction in the temperature set point on all of the manually operated thermostats from 65O F to a lower set point of 50O F.

FIM 3.04 Replace AHU Inlet Guide Vanes with VFDs – City Hall / Police

Both air handling units at Golden City Hall have inlet guide vanes for capacity control. The FIM involved replacing the inlet guide vanes with electronic variable frequency drives (VFDs).

FIM 5.05 DDC Optimization at Golden City Hall – (Eliminated from Scope)

This FIM recommended optimizing the air handling unit discharge air temperature and variable air volume heating airflows to improve comfort and efficiency. It also recommended scheduling the City Hall AHU off at night using set-back/set-up heating/cooling set points. This FIM was removed from the project scope due to concerns with maintaining temperature control in the IT equipment room.

FIM 5.12 Controls Upgrade - Tony Grampsas Gym

This FIM involved upgrading the controls system to allow centralized scheduling and coordination of the HVAC schedule for units HVAC-1 and HVAC-2 to the actual usage schedule of the building. It also involved installation of occupancy sensors for further day-time shut-down of AHU operation when unoccupied.

FIM 16.05 Install Vending Misers – Multiple Buildings

This FIM involved the installation of vending miser controls on a total of 3 refrigerated vending machines at different facilities.

FIM 12.01 Domestic Hot Water System Optimization – Police HQ

This FIM involved installation of point of use (i.e. instantaneous) water heaters at 3 locations to drastically reduce the inconvenience and water wasted while waiting for the hot water to arrive at the tap.

2 .

2. Background Tables C.2 and C.3 below from Contract Schedule C show the energy savings broken out by FIM, by facility, and by Measurement and Verification Option guaranteed.

TABLE C.2

TABLE C.3

A B C D E

9.01 All Lighting Upgrade (1,082) 311,372 440 29,230$ 28,052$ 1,178$ 29,230$ 9.02 Golden Community Center Pool Lighting (546) 122,642 147 8,085$ 7,940$ 145$ 8,085$ 9.03 All Exterior Lighting - - - -$ -$ -$ -$ 17.09 Golden Community Center Solar Pool Heating and Pool Systems Optimization 59,957 (430,706) (590) 22,390$ 22,390$ -$ 22,390$ 3.09 Golden Community Center Replace Rooftop Air Handlers 5,313 89,924 167 10,893$ 10,893$ -$ 10,893$ 3.13 Public Works Building Heating & Building Comfort Optimization and Improvements 5,749 - - 9,615$ 5,824$ 3,791$ 9,615$ 3.04 Golden City Hall Replace Inlet Guide Vanes with Electronic Variable Frequency Drives - 58,493 - 2,542$ 2,542$ -$ 2,542$ 5.05 Golden City Hall DDC Optimization 4,341 34,451 - 5,894$ 5,894$ -$ 5,894$ 5.12 Tony Grampsas Gymnasium Controls Upgrade: Centralization 1,064 10,117 - 1,518$ 1,518$ -$ 1,518$ 16.05 All Vending Misers - 11,606 - 929$ 929$ -$ 929$ 12.01 Golden City Hall Domestic Hot Water System Optimization - - - -$ -$ -$ -$

74,796 207,900 164 88,648$ -$ -$ -$ 2,446$ 85,981$ 5,114$ 91,095$

Savings Summary by M&V Option

FIM Facility FIM Name Therm Savings

kWh Savings kW Savings

M&V OptionFirst Year

Utility Savings

First Year Stipulated

O&M Savings

Total First Year

Savings

Total

9.01 All Lighting Upgrade (1,082) 311,372 440 28,052$ 1,178$ 29,230$ 9.02 Golden Community Center Pool Lighting (546) 122,642 147 7,940$ 145$ 8,085$ 9.03 All Exterior Lighting - - - -$ -$ -$ 17.09 Golden Community Center Solar Pool Heating and Pool Systems Optimization 59,957 (430,706) (590) 22,390$ -$ 22,390$ 3.09 Golden Community Center Replace Rooftop Air Handlers 5,313 89,924 167 10,893$ -$ 10,893$ 3.13 Public Works Building Heating & Building Comfort Optimization and Improvements 5,749 - - 5,824$ 3,791$ 9,615$ 3.04 Golden City Hall Replace Inlet Guide Vanes with Electronic Variable Frequency Drives - 58,493 - 2,542$ -$ 2,542$ 5.05 Golden City Hall DDC Optimization 4,341 34,451 - 5,894$ -$ 5,894$ 5.12 Tony Grampsas Gymnasium Controls Upgrade: Centralization 1,064 10,117 - 1,518$ -$ 1,518$ 16.05 All Vending Misers - 11,606 - 929$ -$ 929$ 12.01 Golden City Hall Domestic Hot Water System Optimization - - - -$ -$ -$

74,796 207,900 164 85,981$ 5,114$ 91,095$

Guaranteed Savings Summary

First Year Utility

Savings


O&M Savings

Total First Year

Savings

Total

FIM Facility FIM NameGuaranteed

Therm Savings

Guaranteed kWh

Savings

Guaranteed kW Savings


Detailed M&V FIM 9.01: Lighting Upgrade

BRIEF DESCRIPTION OF FIM

Lighting in many of the City owned facilities was provided by older T12 fluorescent and incandescent fixtures. Many areas were found to be good candidates for occupancy sensor controls. This measure included updating the lighting in City owned facilities through a combination of fixture replacement and lamp/ballast retrofits. It was also recommended to install occupancy sensor or daylighting controls to minimize annual operating hours where feasible. The facilities receiving lighting upgrades were as follows:

• Astor House • Astor Public Restroom • Clear Creek RV Park • Fire Station #4 • Fossil Trace Golf Course • Golden Cemetery • Golden City Hall • Golden Community Center • Lyons Park • Parfet Park • Pioneer Museum • Public Works Building / Water Treatment Plant • Splash Water Park • Tony Grampsas Gymnasium • Ulysses Park • Vehicle Maintenance Building

Changes to the originally proposed scope include the elimination of most upgrades at the Pioneer Museum, and addition of photocell control of several fixtures above the windows in the Community Center leisure pool area. A complete list of full lighting scope on room-by-room basis can be found in Appendix A of the original TEA.

M&V ACTIVITIES CONDUCTED THIS PERIOD

Since M&V Option A (Partially Measured Retrofit Isolation) was selected for this FIM, only onetime pre-retrofit and post-retrofit measurements are required. The actual lighting run hours were measured using lighting data loggers to determine statistically valid operating hour samples. The data was collected before the FIM was implemented. Since the space occupancy types have not changed significantly, the measured data can be used for both pre- and post-retrofit values. In addition to the pre and post retrofit measurements, spot checks of the lighting and controls throughout the facilities were performed during the annual M&V site visit to ensure the new fixtures and lamps remain installed and maintained. These spot checks will occur annually to verify the equipment’s continued potential to perform.

A sampling of areas within the facilities constituting approximately 85% of the total savings were inspected to verify lighting upgrades and controls functionality. A McKinstry engineer verified the lighting retrofits generally remained as proposed and installed. Spot checks of the lighting equipment indicate that the fixtures throughout the city are also being maintained properly. There were a few areas where lighting controls were not performing correctly that need to be addressed. While the majority of lighting savings is deemed to be achieved, the verified savings figures reflect the impact of malfunctioning lighting controls.

The following is a list of areas identified that are impacting savings and require attention (Line number can be used to refer back to the detailed scope provided in Schedule A of the TEA):

1) Line 06: Police, Chief’s Office - there are two occupancy sensors (O.S.) in this office, one closest to door is not functioning, needs to be changed to manual on, auto off type.

2) Line 15: Police, Conf Rm - O.S. in this room didn’t respond normally when tested, needs to be re-checked

3) Line 52: Police, Report Writing - the O.S. for this area has been removed, reason for removal is unknown, on-going savings will be appropriately adjusted if left as is.

4) Line 64: Police, Sgt. Office - O.S. didn’t respond normally when tested, needs to be re-checked


Detailed M&V 5) Line 71: Police, Briefing Rm - O.S. didn’t respond when tested, no indicator lights showing when occupied

6) Line 101: City Hall, Council Chambers: as-built shows O.S. in use for all fixtures in this area, was unable to find the wall mount sensor supposedly controlling these, lights were noted as ON when unoccupied

7) Line 114: City Hall, Mail Rm - no O.S. was installed even though shown on as-built

8) Line 127: City Hall, Work Rm - the O.S. in this room is being false triggered by the copy machine and lights rarely shut-off, may need to re-orient this sensor if possible

9) Line 131: City Hall, Mens RR - O.S. is false triggering off traffic in hallway, need to block off part of lens or use type with narrower view

10) Line 133: City Hall, Break Rm - O.S. is not functioning, lights would not come on when occupied or lights are in vacancy mode, investigate further

11) Line 410: Community Ctr, Clear Crk Rm - O.S. does not automatically shut-off lights when unoccupied, indicator light on sensor was on solid, didn’t appear to respond to changes in occupancy.

12) Line 415: Community Ctr, Coal Crk Rm - O.S. does not automatically shut-off lights when unoccupied, indicator light on sensor was on solid, didn’t appear to respond to changes in occupancy.

VERIFIED SAVINGS CALCULATIONS AND METHODOLOGY

Verified savings were recalculated for this measure taking into account the noted deficiencies. The contractual utility rates were applied to the verified energy usage savings (kWh and therms) in order to show the equivalent avoided costs achieved.

Annual Electric Savings (kWh)

Annual Demand Reduction (kW)

Annual Gas Savings (Therms)

Annual Avoided Cost ($)

Proposed 294,011 406 -1,040 $26,510

Verified 288,621 406 -1,013 $26,032

Note: proposed case uses current year escalated rates, verified case uses contractual rates

The first year avoided costs were calculated using the baseline rate before any escalation is applied. Future performance guarantee period rates will be escalated according to the ESPC Schedule E. The determination for the contractual utility rates is also described in the ESPC Schedule E.


Detailed M&V DETAILS OF O&M AND OTHER SAVINGS (IF APPLICABLE)

During the first year, there was a stipulated $1,178 for the lighting operational and maintenance (O&M) savings. These first year savings were agreed upon by both McKinstry and the City of Golden. The savings were based on the fact that previously existing lamps and ballasts have shorter expected service life than newer technology products installed for this measure. The previously existing products on average were also estimated at a 50% remaining lamp life , meaning that half of all of the lamps and ballasts were continuing to reach the end of their service life and would need replacement. By installing all new products, with warranties on the lamps and ballasts, the City would not have to incur any material or service costs to replace bulbs or ballasts for any of the fixtures affected by this FIM for at least three years. The O&M savings for this measure will only be applied for the first three performance guarantee M&V years since some lighting material replacements may start to naturally occur again and cause the City to start incurring some of those costs.

Material and service costs increase annually, so an O&M escalation rate of 2.5% was specified in the ESPC documents since it represented the typical annual increase for products and service. O&M savings verified for M&V year 1 are not escalated, but future O&M savings will be escalated by the contractual escalation rate of 2.5% annually.

NOTED DEFICIENCIES AND RECOMMENDATIONS

During the verification process several areas were noted that required attention as it relates to lighting controls. Details of these deficiencies were noted above. It is estimated that correcting these deficiencies will result in $475 per year in currently unachieved savings. McKinstry recommends that a facilities technician investigate the root cause for these issues and we will work with the City to have the lighting subcontractor replace any failing equipment still under warranty. If noted issues remain unresolved, then subsequent year verified savings will continue to be reduced accordingly.

A minor change identified that could result in additional savings is to install on/off photocell control of the (15) 2 lamp fluorescent fixtures in the skylight bay in the City Hall main courtroom. It was observed that these lights were on even when light output from the fixtures was washed out by ambient light coming through the skylight. A rough estimate is that this change would save an additional $35 per year.


Detailed M&V FIM 9.02: Pool Lighting Upgrade


This FIM involved replacing the existing HID fixtures with a combination of wet location rated fluorescent and electronically ballasted pulse start metal halide fixtures throughout the lap and leisure pool areas. This measure also included installing photocell controls for fixtures located over the windows near the leisure pool. Savings is achieved by reducing the total electrical load through use of more efficient lighting technology. Photocell control will reduce operating hours for these fixtures when sufficient daylight is present.


Since M&V Option A (Partially Measured Retrofit Isolation) was selected for this FIM, only onetime pre-retrofit and post-retrofit measurements are required. The actual lighting run hours were stipulated based on the assumption that pool lighting is left on for the entire duration of building occupied hours. Spot checks of the lighting and controls were performed during the annual M&V site visit to ensure the new fixtures and lamps remain installed and maintained correctly. These spot checks will occur annually to verify the continued potential to perform.

During the site visit, conducted by a McKinstry engineer, it was noted that lighting retrofits generally remained as specified. The proposed fixtures installed appeared well maintained and operating as expected. The only deficiency identified was that lighting controls in use for fixtures located over the windows in the leisure pool area had the photocell covered up to disable on/off control. This change reduces the expected savings by 1,218 kWh per year.

During the course of analysis for this FIM, incorrect assumptions were made in the energy savings calculations based on unforeseeable changes in scope. The bulk of guaranteed savings were based on two significant stipulated factors: the total number of replacement fluorescent fixtures to replace the existing HID’s, was estimated at a quantity of 56, and all new fluorescent fixtures were to be controlled by ON/OFF photocell daylight sensors. During final construction the total fixture count ended up being 72, and no photocell control was implemented. There was no change order put in place to account for these changes in scope and their impact on guaranteed savings. This error resulted in an over estimation of savings by approximately 21,900 kWh per year. No documentation can be found from McKinstry or any City of Golden employee related to modifying the proposed scope of work as detailed in Schedule A of the ESPC. McKinstry recognizes the impact this change may have on the total project savings, and will make efforts to recoup this difference through other measures in this or other facilities if there is a project level shortfall in savings.


Verified savings were recalculated for this measure taking into account the noted changes and deficiencies. The contractual utility rates were applied to the verified energy usage savings (kWh and therms) in order to show the equivalent avoided costs achieved.





Proposed 122,642 147 -546 $7,940

Verified 99,940 141 -448 $6,103


The first year avoided costs were calculated using the baseline rate before any escalation is applied. Future performance guarantee period rates will be escalated according to the ESPC Schedule E. The determination for the contractual utility rates is also described in the ESPC Schedule E.



During the first year, there was a stipulated $145 for the lighting operational and maintenance (O&M) savings. These first year savings were agreed upon by both McKinstry and the City of Golden. The savings were based on the fact that previously existing lamps and ballasts have shorter expected service life than newer technology products that were installed for this measure. The previously existing products on average were also estimated at a 50% lamp life left, meaning that half of all of the lamps and ballasts were continuing to reach the end of their service life and would need replacement. By installing all new products, with warranties on the lamps and ballasts, the City would not have to incur any material or service costs to replace bulbs or ballasts for any of the fixtures affected by this FIM for at least three years. The O&M savings for this measure will only be applied for the first three performance guarantee M&V years since some lighting material replacements may start to naturally occur again after that point which will cause the City to start incurring some of those costs.

Material and service costs increase annually, so an O&M escalation rate of 2.5% was specified in the ESPC documents since it represented the typical annual increase for products and service. O&M savings verified for M&V year 1 are not escalated, but future O&M savings will be escalated by the contractual escalation rate of 2.5% annually.


During verification there was only one area of note that required attention by the City as it relates to lighting controls for photocell control of the fixtures near the leisure pool. Details of these deficiencies were noted above. It is estimated that correcting this deficiency will result in $53 per year in currently unachieved savings. McKinstry recommends the City re-enable the photocell control for these for fixtures and/or further discuss the causes for concern and if they can be addressed in another way.


Detailed M&V FIM 9.03: Exterior Lighting Upgrades


Existing exterior building mounted lighting fixtures at the Golden City Hall, the Public Works Building and the Golden Community Center generated a great deal of stray light and did not comply with Golden’s Dark Sky Initiative. This FIM involved upgrading these fixtures to meet compliance with Golden’s Dark Sky Initiative.

Exterior lighting fixtures were upgraded or modified at the following locations:

• City Hall

• Pioneer Museum

• Water - Exterior

• RV Park - Garage

• RV Park - Office

• Community Center

• Grampsas Gym

• Fossil - Clubhouse

• Splash Water Park

• Fire Station #4

• Cemetery Maintenance

• Ulysses Concessions


There were no savings associated with this particular measure. During the site visit, conducted by a McKinstry engineer, it was noted that lighting retrofits generally remained as specified. Proposed fixtures installed appeared well maintained and operating as expected.


No savings were associated with this particular FIM, as such there are no calculations or methodology to review.





Proposed 0 0 0 $0

Verified 0 0 0 $0


DETAILS OF O&M AND OTHER SAVINGS (IF APPLICABLE)

There were no O&M savings associated with this measure.


No deficiencies were identified.


Detailed M&V FIM 17.09: Solar Pool Heating and Pool Systems Optimization


This FIM involved several key components to improve the efficiency of the pool water heating and pool related HVAC systems at the Community Center. The three main components of this FIM were as follows:

1. Install a solar thermal system to offset a portion of the total heating requirements for the pools and spa hot water boilers. Savings is achieved by reducing the gas consumption at the pool water boilers as a portion of heating load is delivered by the solar thermal system.

2. Re-commission the controls and functionality of air handler unit (AHU) 5 serving the pool area. The purpose of these controls upgrades was to restore proper control of the air handler exhaust, improve the unit’s heat recovery capability, and ultimately improve overall efficiency. The as-found condition was using high outside air ratio to provide de-humidification. There was also a separate exhaust fan being used in addition to the exhaust fan in the unit. This unit is designed to operate at optimum efficiency when the outside air ratio is kept to the minimum requirement to serve ventilation needs for occupants, and allow the mechanical DX coils and compressors to provide de-humidification. The unit is then able to recover heat from the hot gas normally entering the condenser to heat pool water and ventilation air. This change results in increased electrical load and consumption from the compressors, but is offset by an even larger reduction in gas energy use for heating pool water and discharge air.

3. Upgrade the pool pump motors to high efficiency type motors and replacing the pumps that are scheduled for replacement during the 2008-2011 timeframe. This portion of the measure was removed from the project scope when determined that readily available shaft sizes on NEMA premium efficiency motors are incompatible with the existing pumps.

4. The existing jet pumps at the spa pool were on a manual On/Off switch and the vortex pumps were left running continuously. This measure replaced the On/Off switch with an air-actuated timer control to provide improved pump start/stop control and reduce operating hours. The jet pumps now run on a 15-minute timer operated by the occupants; and the vortex pumps run only when the pool is open. Savings results from reduced electrical consumption by the jet and vortex pumps.


The Measurement & Verification for this FIM is using Option A methodology. This involves short-term spot checks of critical measured parameters and verification of system and component function to determine their “potential to perform” in agreement with stipulated performance or usage factors used in calculation of energy savings. The following factors were to be verified for this FIM:

1. For the solar thermal system installation: a. Verify that the system is operational and has not been modified in any way that would negatively

impact the ability of the system to generate hot water for the pool. b. Inspect the pumps to verify they are being maintained properly and operate as scheduled. c. Piping and fittings were visually inspected to ensure they are free from leaks. d. During the inspection the following conditions were noted:

i. Outside air temperature ii. Observation of general atmospheric conditions (clear, partly cloudy, etc.) iii. Measurement of current solar radiation insolation value iv. Water temperature entering solar array v. Water temperature leaving solar array vi. Water temperature entering heat exchanger vii. Water temperature leaving heat exchanger

e. If any operational deficiencies were identified they will be noted and corrective action items will also be noted.


Detailed M&V f. System short term trend data for thermal energy produced, showing actual system performance,

will be compared to the savings calculation model output using current insolation values.

2. For the AHU re-commissioning the following will be verified: a. General visual verification of system performance including inspection of OA damper function,

confirm that a separate exhaust fan is not in use, check heat recovery valves and system components are fully functional, and verification of DDC controls set points.

3. For the spa pool timer system: a. Savings were verified by ensuring the timer operates correctly by observing it through one cycle

where the system was enabled and then time delay to where it shuts off was measured.

The following is a description of details regarding verification for each portion of this FIM.

1. The following are observations and conclusions leading to verified savings for the solar thermal portion of this FIM:

a. All system components were checked to verify the “potential to perform” does exist on all critical components such as: solar array panels, circulation pumps, and temperature controls. There were no major issues identified. A minor issue with some water leakage at the top of one pump was found, and is documented in Appendix D with pictures.

b. Short term trend data from the energy/BTU meter for the system was collected from the building automation system (BAS). The following graph summarizes the system output energy relative to total incident solar energy on the array. Incident solar energy values were obtained from real-time data available from the local NREL solar measurement station located in Golden. Observation from this data is the system converts on average approximately 83% of incident solar energy into useable heating energy for the pool water. Other supporting data used for calculations is available in Appendix D.

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Detailed M&V

c. Based on short term measurements using trend data for actual solar thermal system performance and applying this to the total available incident solar energy, the estimated system output is approximately 9,300 Therms/year. The original system model expected output is 10,420 therms/yr. Therefore at the current performance the system is producing 89% of design output. At a stipulated boiler efficiency performance of 80%, this output results in approximately 11,680 Therms/year in gas savings at the hot water boilers.

2. Verification activities associated with AHU-5 resulted in the following conclusions: a. Upon further review of original savings calculations and stipulated values, there were

discrepancies identified as follows: i. Original baseline value for space RH% was assumed to be 40%, the final commissioned

value currently being controlled to is 50%. As such, the original savings model over estimates the required electrical load for de-humidification and the resulting amount of recoverable heat it would have generated.

ii. The pool boiler efficiency was assumed to be 80%, but based on building gas use breakdown and boiler efficiency testing this value is closer to 85%

iii. The final commissioned outside air (OA) ratio was 4,559 CFM; the savings calculation is based on an OA ratio of 3,970 CFM. This difference reduces the anticipated increased electrical load from mechanical de-humidification, and increases the gas use as compared to the original savings calculations.

iv. The original calculation assumed that heat recovery to pool water was connected to all three pools. In actuality the compressor heat recovery is only connected to the lap pool.

v. The original calculation used the peak evaporation rate vs. an average rate from the pools to estimate the amount of de-humidification required. This overestimates the amount of gas savings as higher evaporation rates require more de-humidification which then results in more heat recovery.

vi. The original savings calculation did not properly account for heat recovery to both air and water, but water only. In its final commissioned state the PDU can transfer

y = 0.9141xR² = 0.8153

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Actual System Output vs. Insolation (Btu/hr)Period: Nov. 17th ‐ 18th 2010


Detailed M&V recovered heat to both water and air.

b. As a result of these changes, it was determined that the originally estimated negative savings (negative savings means that electrical consumption would be higher in the proposed case than in the baseline case) impact on electrical load and consumption was overstated. Since less de-humidification is occurring by the compressors, less waste heat is available. This resulted in gas savings that were also overestimated.

c. Based on visual verification that the minimum outside air draw at the unit appears higher than the 10% set point value shown in the DDC system and likely higher than final commissioned minimum OA CFM value. There were discussions regarding plans to increase this back in March in 2010. This will also result in less mechanical de-humidification, a smaller increase in anticipated electrical load, and reduced gas savings from heat recovery. Trends will be set up to further validate the current actual minimum OA ratio, and subsequent adjustments to verified savings will be reported back to the City based on these results.

d. It was found that during system testing at approximately 46 deg F outside air temperature, the AHU de-humidification compressors failed to cycle on. Functional testing of the AHU was performed by setting the space RH% set point to 20% forcing the de-humidification system to operate. The DDC status showed the compressors as being ENABLED, but compressor status was displayed as OFF. This condition was verified by visually observing operation of the compressors. A copy of the DDC screen shot showing this condition can be found in Appendix D. The following trend data also shows some indication of humidity control issue:

3. The high efficiency motor upgrades were removed from the project scope prior to the commencement of the performance period. The original guaranteed savings for this FIM has now been adjusted down by the 18,449 kWh/yr in savings originally estimated for this portion of the FIM. This explains the increase in

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Trend shows indications that during peak daytime hours when OA is cold the system is still struggling to maintain 50% RH likely due to compressore failure issue identified in M&V


Detailed M&V negative savings shown in Executive Summary Table 1 as compared to the original value shown in the guaranteed savings summary table in Schedule C of the contract.

4. Verification of the spa pool function was conducted through visual inspection and check of timer operation and controls. No issues were found with proposed changes to the system.


As described previously, there were a number of adjustments made to the savings calculations based on changes in system operation and original calculation factors. Reduced negative impact on electrical load and consumption is partly due to two factors: overestimation in original calculations and a reduction in mechanical dehumidification as a result of compressor failure and OA ratio increases. The gas savings was also reduced, partly due to incorrect assumptions in the original savings calculations, and reduction in heat recovery resulting from less compressor use due to intermittent or reduced operation.





Proposed -499,155 -590 59,957 $21,566

Verified -34,886 -295 44,843 $31,452





The following deficiencies require further action:

• The root cause for de-humidification system compressors on AHU-5 failing to start at low ambient conditions needs to be further investigated and corrected. Correcting this will allow for the system to further increase the amount of heat recovery possible and would likely address any relative humidity control issues that may be occurring in the space if the compressors are unable to operate. McKinstry will take the lead in initiating efforts with BTS to troubleshoot the root cause of noted failures. Any causes deemed to be the result of deferred maintenance on the part of the City will need to be owned and corrected by City facilities staff. If not addressed, subsequent verified savings will be adjusted further as is consistent with actual operation. Any resulting reduction in savings will be the responsibility of the City until such time that appropriate corrections are made.

• Existing control of the outside air ratio requires further investigation. Using a higher OA ratio will negate potential savings from heat recovery off the mechanical de-humidification compressors. If there are on-going air quality issues, these should be investigated further by the City for other potential root causes and remedies. If addressable, then the outside air ratio may be returned to the 7-10% target range originally proposed. McKinstry will work with the controls contractor to set up additional data logging to further analyze the actual outside air ratio. If determined the outside air ratio is higher than the final commissioned state, any resulting further reduction in savings based on this data would be the responsibility of the City unless action was taken to return operation back to originally proposed condition.


Detailed M&V FIM 3.09: Replace Rooftop Air Handlers


RTUs 1-4 at the Community Center operate as “Variable Volume and Temperature” (VVT) Systems. In this system, each zone has a volume damper for capacity control, and the AHU “time-shares” between heating and cooling, as follows: The control system runs the AHU in heating, and those zones that need heat open their dampers. When the cooling load is higher than the heating load, the AHU switches to cooling, and those zones that need heat close their dampers while zones needing cooling open dampers.

If the zones are well matched, the AHU generally stays in either heating or cooling. If the zones are poorly matched, the AHU can end up flip-flopping back and forth between heating and cooling. This FIM involved replacement of the four original Rooftop AHUs. The new AHUs were configured for VVT sequence, matching existing sequence and terminal equipment.

Several improvements were made as part of this FIM:

• New AHUs now have higher heating and cooling efficiency. Baseline heating efficiency was 70%, new units are rated at 80%. Baseline cooling efficiency was 8 SEER, new units are a minimum of 10 SEER.

• Total operating hours have been reduced to better match actual building occupancy. Baseline operating hours were reduced by 733 hours per year. Details of inputs to energy calculations showing the change in schedule can be found in Appendix E.

• Economizer function was added to new units to allow use of up to 100% outside air ratio as first stage of cooling.


Since M&V Option A (Partially Measured Retrofit Isolation) was selected for this FIM, only onetime pre-retrofit and post-retrofit measurements are required. Short term trending was used to verify operational factors used in savings calculations. The Measurement & Verification plan called for the following tasks as part of the annual site survey:

• Use trend data to measure economizer operation, and ensure units are functioning as expected, utilizing up to 100% outside air ratio for first stage of cooling.

• Use trend data to measure that proposed schedules are still in place. • Performance parameters for heating and cooling efficiency are based on stipulated values. Overall visual

verification of systems will be done to assess the “potential to perform”.

The following trend graph summarizes the verified operation of all four RTUs. The trend graph confirms the units are operating per the proposed schedule. Although OAT temperatures were not completely conducive with economizer operation it can be seen there are a few points where OA% is increased during moderate OAT conditions showing the economizer is employed to meet a presumed cooling demand in the zones.


Detailed M&V

An issue to note is that the minimum OA settings are higher than was stipulated in the original savings calculations. The original savings calculations assumed a baseline minimum outside air setting of on average about 16% for all four units. Refer to a copy of the calculations input parameters in Appendix E. The original savings calculations also had an incorrect baseline total supply CFM for all four units combined. In conclusion, the weighted average minimum outside air setting based on final test and balance data and supported by trend graphs is approximately 30%. This increase in gas use due to higher minimum OA offsets the savings achieved from the improved heating efficiency and reduced operating hours. This increase in gas use makes the proposed case higher relative to the baseline and therefore a negative gas savings results; and small reduction in cooling savings as the minimum OA is also impacts cooling when operating outside of the economizer mode.


After making adjustments to the originally calculated savings due to a change in the baseline supply CFM and final as-found minimum OA settings, the final result is a negative savings for gas and slight reduction in cooling savings. The final commissioned setting for the minimum OA is McKinstry’s responsibility and any required substantial change to this relative to original estimated values should have been addressed through a change order with the City. As such, McKinstry has responsibility for any resulting impact this may have on final project guaranteed savings unless it can be corrected through a baseline adjustment or correct minimum OA settings can be restored.





Proposed 89,924 167 5,313 $10,898

Verified 86,289 134 -698 $5,209


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• McKinstry will further investigate with help from the City as to if and why RTU-4 is operating at 65% minimum outside air setting, and explore the potential to reduce this or look at use of demand control ventilation or occupancy control ventilation opportunities to reduce the outside air requirement based on actual occupancy. Based on current International Mechanical Code 2009, the required minimum ventilation for this size gymnasium area (7,800 sqft) is approximately 2,800 CFM. With the rated supply CFM of 16,000 for this air handler, this comes to 14% minimum OA ratio. McKinstry will work with the City to look at settings for this unit and make adjustments if possible. Future verified savings will be adjusted according to actual operational condition of the system.

• Currently RTU-2 minimum outside air is set to 0%. This does not provide the code required minimum ventilation to the zones served during peak heating and peak cooling load conditions. The root cause for hot/cold complaints in the zones should be investigated by the City and corrected in order to restore minimum OA ratio to the ~20% originally balanced at.


Detailed M&V FIM 3.13: Heating & Building Comfort Optimization & Improvements


The existing boiler at the Public Works Building was at the end of its useful life and scheduled for replacement in 2008. Throughout the Water Treatment Plant are many gas-fired Unit Heaters. Each contains a small natural gas burner, and an electronic thermostat mounted adjacent on the wall. All of the observed thermostats were controlling to 65 deg F.

This FIM involved replacement of the aging, inefficient boiler with a new, high efficiency boiler. The existing gas fired boiler was replaced with a similar sized natural gas boiler which serves the spaces currently served by the boiler and the anticipated 10,000 square foot additional office space. This measure also proposed a reset of the manually operated thermostats controlling unit heaters to a set point of 50 deg F.

Energy savings from this FIM are resulting from the following improvements:

• Setting back the thermostats controlling unit heaters throughout the Water Treatment Plant.

• Improved boiler efficiency from replacing the heating boiler.


Since M&V Option A (Partially Measured Retrofit Isolation) was selected for this FIM, only onetime pre-retrofit and post-retrofit measurements are required. A spot measurement of the boiler efficiency was conducted to verify performance on an annual basis. The Measurement & Verification plan called for the following tasks as part of annual site survey:

• Visually verify thermostat settings on all unit heaters throughout the public works buildings. Ensure all thermostats are set to 50 deg F.

• Verify boiler performance by conducting a combustion efficiency test. • Verify that boiler maintenance is being conducted on a regular basis and that stipulated O&M savings are

being achieved by collecting information from maintenance records or by conducting interviews with staff.

The boiler combustion efficiency test resulted in a verified performance of 87% efficiency. Original savings calculations were based on a measured value of 80%. As a result, the verified gas savings for this portion of the FIM increased by approximately 1,000 therms per year. Copies of the test results for the boiler combustion efficiency can be found in Appendix F.

The verification of thermostat settings throughout all the buildings revealed that none of the thermostats were being set back to their proposed set points. All of the unit heater thermostats were labeled with recommended set points. Only those in the flocculation tank building were labeled for set back to 50 deg F, all others were found to be set at a value ranging from 65 deg F to 72 deg F. It was also discovered that the original estimated savings was based on temperature set back in a total building area of 15,000 square feet and included spaces with significant window area. It is unclear as to whether the original scope of savings over-estimated the number of unit heaters to set back or if the scope was agreed upon to only include the flocculation tank building (~10,000 square feet and no windows). When savings were re-calculated with these revised inputs the estimated savings is roughly 2,800 therms/yr less than originally estimated.


After making adjustments to the originally calculated savings due change in total building area impacted by thermostat set-back, and including additional savings from the boiler efficiency measure, the following is a summary of resulting verified savings compared to originally proposed values:


Detailed M&V Annual Electric

Savings (kWh) Annual Demand Reduction (kW)



Proposed 0 0 5,749 $9,615

Verified 0 0 4,508 $8,357



The existing boiler at the Public Works Building required significant repairs and parts replacements over the past several years. Maintenance savings were calculated for years 1 through 10 as the material and labor costs associated with repairs of the boiler over the last 3 years as provided by the City as follows:

2006 - $4,011.32

2007 - $1,315.00

2008 - $6,047.85

Expenditures to date in 2008 were $6,047 due to the fact that the boiler had numerous problems in the winter and spring of 2008. The 3-year average cost is $3,791 and this amount is being claimed as stipulated savings throughout the full term of the contract.


• Reinforce a policy for maintaining all thermostat settings at the recommended 50 deg F unless specific areas require a higher set point on a temporary basis. Consider installation of programmable thermostats at a minimum to set-back during unoccupied times, and even better use, programmable type thermostats with occupancy detection to set-back when unoccupied during normally scheduled hours. The potential savings that can be recouped with use of programmable thermostats would likely pay back the cost in less than 3 years.


Detailed M&V FIM 3.04: Replace Inlet Guide Vane Controls with VFDs


Both air handling units at Golden City Hall had inlet guide vanes for supply and return air flow modulation. This FIM involved replacing the inlet guide vanes with electronic variable frequency drives. A total of four VFDs were added to the two existing AHUs, one drive for the supply and return fan in each unit.

Energy savings from this FIM are resulting from the improved fan operating efficiency. Lowering the drive speed at low flow conditions is also reducing the total electrical load on the fan motor more so than inlet guide vane control.


Since M&V Option A (Partially Measured Retrofit Isolation) was selected for this FIM, only onetime pre-retrofit and post-retrofit measurements are required. A spot measurement of the static pressure sensor was conducted to verify performance.

The overall ability of this FIM to generate energy savings is directly related to the ability of the variable frequency drive to maintain the static pressure set point and the accuracy of the static pressure sensor. The measurement and verification will continue to consist of annual checks of calibration of the static pressure sensors to ensure the final commissioned static pressure set points have not been altered. The variable frequency drives have also been inspected to see that they have not been bypassed.

Upon verification that the system is controlling the fan speed as commissioned the savings for this measure is considered to be achieved. Notes were taken as to if the drives were bypassed, static pressure sensors are out of calibration or any other issues that may degrade savings were discovered during the measurement and verification activities.

Pictures from the DDC system can be found in Appendix G. Verification of pressure set point was confirmed to be 2.0” of W.C. as originally proposed. The static pressure sensor was also checked to ensure it was properly calibrated.

The default fan speed profile used in the calculation does not exactly match the actual profile as found during verification. The original fan flow profile assumed more of a bell curve distribution as follows:

As can be seen by screen shots in Appendix G, one AHU ranges from 60-70% and the other 75-85% and this is during winter season conditions which would generally represent close to the minimum speed you expect to see. As such, the calculations were revised to use the following profiles, the first is for AHU-1 serving the City Hall side, the second for AHU-2 serving Police HQ side

% Flow

% of Annual Hours

90 1.980 5.170 13.760 23.150 23.140 19.930 13.2


Detailed M&V

It was also determined the original savings calculations were based on the assumption that the City Hall AHU would be put on a night set-back schedule and the fans would be shut-down (as was consistent with what was being proposed for FIM 5.05 at the time). As such the operating hours in the savings model were only 3,068 hrs/yr. In actuality the building continues to be in operation continuously or 8,760 hours per year. As a result of these changes to the calculation model, the annual savings will actually increase relative to what was originally proposed.


After making adjustments to the originally calculated savings due change in the total baseline operating hours and actual fan flow profile the following is a summary of resulting verified savings compared to originally proposed values:





Proposed 58,493 0 0 $2,544

Verified 69,673 0 0 $3,031



No O&M savings were associated with this FIM.


• McKinstry recommends moving forward with the originally proposed FIM to shut-down the City Hall AHU when unoccupied and use night set-back/set-up heating/cooling set points to cycle the unit on as required. It was noted during on-site verification that a second mini-split Dx cooling unit was added to provide required cooling for the IT server room. With this installed concerns about shutting down the main AHU and still providing cooling to the IT room should be addressed. The original proposal estimated 34,451 kWh/yr in electrical savings and 4,341 therms/yr in gas savings for a total of $5,894 / yr in savings at 2008 utility rates. The assumed schedule would have been 7am – 6pm Monday through Wednesday and Friday, 7am – 11pm on Thursday, and off on weekends. The heating set point would be reduced to 62 deg F and the cooling set point raised to 78 deg F. New total operating hours would be approximately 3,172 per year. McKinstry will work with the City to implement this measure in the near future once final approval is obtained.

• Further optimization of the two AHUs could be done to evaluate and improve the current discharge air temperature (DAT) reset function. It was noted that the DAT is kept very low even during the heating season and there is potential for additional gas savings if this were to be fine tuned.

%FLOW %FLOWSELECTED DEMAND HRS======== ========90 1080 2070 2060 5050 040 030 0

%FLOW %FLOWSELECTED DEMAND HRS======== ========90 1580 3570 5060 050 040 030 0


Detailed M&V FIM 5.12: Controls Upgrade: Centralization


Both air handling units at Tony Grampsas Gym were operating on individual programmable thermostats. This FIM involved replacing these with a DDC system for the facility and use of occupancy sensor inputs in addition to fixed schedules to shut-down the units and set-back/set-up set points when unoccupied.

Energy savings from this FIM will result from the reduced run hours on the AHU fans as well as heating and cooling savings by reducing conditioning of ventilation air and losses through the building envelope.


Since M&V Option E was selected for this FIM, all inputs to determine the estimated savings are based on stipulated values. Visual verification has been completed to verify potential to perform.

The overall ability of this FIM to generate energy savings is directly related to shutting down both AHUs when the space is detected as being unoccupied using the installed occupancy sensors. Basis for savings from reduced schedule used a baseline of 5,990 hours per year (schedule of 6am – 11pm daily). The proposed case was to reduce to 3,854 hours per year; about a 36% reduction. Details of proposed daily schedules used to develop proposed hours can be found in Appendix H. The AHUs would be shut-down and temperature set points changed to set-back / set-up values for heating / cooling respectively. The heating set-back value was also to be lowered from 62 deg F down to 58 deg F; the cooling set-back value was to remain at 78 deg F. It was assumed that use of the occupancy sensors would lead to even greater reduction in operating hours beyond that being modeled for savings.

Although this measure is based on stipulated values, some short term trend data was collected to evaluate actual operating schedule compared to that being proposed. An analysis of occupancy sensor data over a month long period from December to early January 2011 revealed the gym is occupied about 20% of the time (out of 24 hours). The fan status for both North and South AHUs were also analyzed over roughly the same time frame. The North AHU fan status revealed this unit only operated about 17% of the time from mid-December to early January, which is consistent with occupancy sensor data. However, the South AHU fan status showed this unit ran about 47% of the time, far more than the other AHU. This additional run time is a result of a failed occupancy sensor. A snapshot of detailed data can be found in Appendix H.


Since only one out of the two AHUs is performing as expected, and the other appears to operate nearly the same number of hours as in the baseline, the verified savings are shown as half of that originally proposed. Based on information from City facilities staff, the controls contractor for the DDC upgrade was made aware of this issue and is in the process of replacing the occupancy sensors.

After making adjustments to the originally calculated savings due to operating issues with the South AHU, the following is a summary of resulting verified savings compared to originally proposed values:





Proposed 10,117 0 1,064 $1,518

Verified 5,058 0 532 $759



Detailed M&V




• Based on our findings with improper run times on the South AHU, it is recommended that McKinstry and the City work together to ensure the controls contractor remedies any issues with the occupancy sensor, set-up subsequent trends to capture run times, and present this data for further analysis to McKinstry to verify systems are operating as intended. Once proper operation is confirmed the savings will be returned to originally proposed values.


Detailed M&V FIM 16.05 & 12.01: Vending Misers & DHW Optimization


Both of these FIM’s are assumed to be generating energy savings, and in the case of FIM 12.01 there is also opportunity to generate some water savings. However, both were opted to use Option E for M&V, and as such all savings are deemed to be achieved based on visual verification that the proposed equipment demonstrates the “potential to perform”.

The first measure involved installing Vending Misers on vending machines at several City facilities. At the time of the energy audit there were eight refrigerated beverage vending machines at the City of Golden without Vending Miser units installed. Although it was originally recommended that the City install vending misers on all of its refrigerated beverage vending machines, the City was in the process of soliciting RFP responses from new vendors for leased machines. The City has made EnergyStar compliant machines a specification in their RFP; it was expected the City would have five EnergyStar rated machines at its facilities by the end of 2008. The other three vending machines that were not being replaced had Vending Misers installed. When equipped with a Vending Miser, refrigerated beverage machines use less energy and are comparable in daily energy performance to new Energy Star qualified machined. Energy savings is achieved by cycling off the refrigerator compressors for long periods of unoccupied times, and shutting off the machine lights base on short term occupancy detection.

The second measure was implemented mainly to address an inconvenience, but does have energy and water savings associated with it that were not guaranteed as part of the project. There were three sinks within the Golden City Hall Police Department that took a very long time for hot water to reach. The FIM addressed this inconvenience by installing electric point of use water heaters to serve these three sinks.


Since M&V Option E was selected for this FIM, all inputs to determine the estimated savings are based on stipulated values. Visual verification was completed to verify that the equipment was in place and fully operational with the potential to perform. Photos of installed equipment can be found in Appendix I. No issues were identified as part of the verification. As such the savings for these measures is deemed to be achieved.


The following is a summary of resulting verified savings compared to originally proposed values:





Proposed 11, 606 0 0 $929

Verified 11,606 0 0 $929





• No deficiencies were noted.

The following tables summarize the changes made to scope as defined in Change Order #1 authorized on April 1st, 2009. The first table summarizes the building areas and the originally proposed changes as consistent with the original guaranteed savings in the original contract. The second table summarizes the changes made as part of the change order and subsequently revised lighting scope in the areas shown.

Appendix A.1

Appendix A.1

MANCOS SCHOOL DISTRICT - M&V REPORT

The following summarizes the changes made to scope as defined in Change Order #2 authorized in September 2009. The change removed from scope the proposed DDC Optimization FIM 5.05 that applied to the City Hall facility.

Appendix A.2

Appendix A.2

CITY OF GOLDEN - M&V REPORT

August 26, 2009

Mr. Dan Hartman

Public Works Director

City of Golden, Colorado

1445 10th Street

Golden, CO 80441

RE: Request for Material Change to Energy Performance Contract Executed September 26, 2008

Mr. Hartman,

The purpose of this letter is to document your request to remove all night setback scheduling that was implemented as part of FIM 5.05 – DDC Optimization and that you understand the following:

• The Guaranteed Energy Savings for FIM 5.05 – DDC Optimization as shown in the above referenced Energy Performance Contract – Schedule C, Table C.1 will be set to 0 Therms and 0 kWh and the First Year Utility Savings will be set to $0 and the Table will be adjusted as shown below.

Appendix A.2


• The Guaranteed Avoided Costs as shown in Table C.2 will be adjusted as shown below:

• The Scope of Work associated with FIM 5.05 – DDC Optimization as described in Schedule D – Performance Inspection Methodology and Frequency will be removed.

• The Scope of Work associated with FIM 5.05 – DDC Optimization as described in Schedule F – Measurement and Verification Plan will be removed.

• The Guaranteed Savings Summary shown in Schedule R – Table R.2 will be modified as shown below, to show 0 Guaranteed Therm Savings, 0 Guaranteed kWh Savings, $0 First Year Utility Savings for FIM 5.05 – DDC Optimization. The summary line Total in this table shall be adjusted to reflect this change as well.

Savings Summary by M&V Option

FIM Facility FIM NameTherm

Savings (Nat Gas)

kWh Savings

Demand Savings

(kW)M&V Option

First Year Utility

Savings


O&M Savings

Total First Year

Savings

9.01 All Lighting Upgrade (1,082) 311,372 440 A $28,052 $1,178 $29,230

9.02 Golden Community Center Pool Lighting (546) 122,642 147 A $7,940 $145 $8,085

9.03 All Exterior Lighting 0 0 0 N/A $0 $0 $0

17.09 Golden Community Center Solar Pool Heating and Pool Systems Optimization 59,957 (430,706) (590) A $22,390 $0 $22,390

3.09 Golden Community Center Replace Rooftop Air Handlers 5,313 89,924 167 A $10,893 $0 $10,893

3.13 Public Works Building Heating & Building Comfort Optimization and Improvements 5,749 0 0 A $5,824 $3,791 $9,615

3.04 Golden City Hall Replace Inlet Guide Vanes with Electronic Variable Frequency Drives 0 58,493 0 A $2,542 $0 $2,542

5.05 Golden City Hall DDC Optimization 0 0 0 A $0 $0 $0

5.12 Tony Grampsas Gymnasium Controls Upgrade: Centralization 1,064 10,117 0 E $1,518 $0 $1,518

16.05 All Vending Misers 0 11,606 0 E $929 $0 $929

12.01 Golden City Hall Domestic Hot Water System Optimization 0 0 0 E $0 $0 $0

70,455 173,448 164 $80,086 $5,114 $85,200Total

YearUtility

Savings

Operational &

Maintenance Savings

Total Avoided

Costs

1 $80,086 $5,114 $85,200

2 $83,291 $5,247 $94,668

3 $86,627 $5,383 $98,385

4 $90,098 $4,094 $100,822

5 $93,711 $4,201 $104,807

6 $97,471 $4,310 $108,952

7 $101,384 $4,422 $113,264

8 $105,457 $4,537 $117,750

9 $109,697 $4,655 $122,418

10 $114,109 $4,776 $127,275

Table C.2: Guaranteed Avoided Costs

Appendix A.2


• Any construction fees or annual measurement and verification fees due to McKinstry that are associated with this Energy Performance Contract will remain unchanged.

It will be the intent of McKinstry to include a copy of this acknowledgement in future Measurement and Verification Reports until such time that the City of Golden gives McKinstry formal authorization to have the night setback scheduling associated with FIM 5.05 – DDC Optimization reinstated.

Please print out this letter, sign the section that indicates your acceptance of this Material Change to the Energy Performance Contract and return to McKinstry at your earliest convenience.

Thank you,

Bryan Hanson

Sr. Program Manager

McKinstry

FIM FIM Name FacilityGuaranteed

Therm Savings

Guaranteed kWh

Savings

Guaranteed Demand Savings

First Year Utility

Savings

First Year O&M

Savings

Total First Year Cost Savings

Service Life

9.01 Lighting Upgrade All (1,082) 311,372 440 $28,052 $1,178 $29,230 10

9.02 Pool Lighting Golden Community Center (546) 122,642 147 $7,940 $145 $8,085 10

9.03 Exterior Lighting All 0 0 0 $0 $0 $0 10

17.09 Solar Pool Heating and Pool Systems Optimization Golden Community Center 59,957 (430,706) (590) $22,390 $0 $22,390 17

3.09 Replace Rooftop Air Handlers Golden Community Center 5,313 89,924 167 $10,893 $0 $10,893 15

3.13 Heating & Building Comfort Optimization and Improvements Public Works Building 5,749 0 0 $5,824 $3,791 $9,615 25

3.04 Replace Inlet Guide Vanes with Electronic Variable Frequency Drives Golden City Hall 0 58,493 0 $2,542 $0 $2,542 15

5.05 DDC Optimization Golden City Hall 0 0 0 $0 $0 $0 15

5.12 Controls Upgrade: Centralization Tony Grampsas Gymnasium 1,064 10,117 0 $1,518 $0 $1,518 15

16.05 Vending Misers All 0 11,606 0 $929 $0 $929 15

12.01 Domestic Hot Water System Optimization Golden City Hall 0 0 0 $0 $0 $0 12

70,455 173,448 164 $80,086 $5,114 $85,200Total

Guaranteed Savings Summary


The following summarizes the changes made to scope as defined in Change Order #3 authorized in May 2009. The change removed several items from the scope related to controls for the solar thermal system that had no impact on guaranteed savings. It also involved a change to the proposed motor upgrades on pool pump motors that does require an adjustment to guaranteed energy savings as part of FIM 17.09. The following areas highlighted in the following copy of the change order show details of what was changed:

Appendix A.3

Appendix A.3


Change Order

Date: 5/14/09

To: Dan Hartman

From: Kip Kenyon, Construction Manager

Subject: Solar Upgrade; Solar Controls Upgrade; Boiler Electrical Connection Replacement

Project #: C20005 City of Golden

PO#: (customer to provide)

Vendor: Building Tech Systems/Wayne’s Electric/Nexgen Solar/McKinstry

Scope of Services:

McKinstry shall provide the following:

• All labor and material to install new piping and insulation for solar upgrade to Type L Copper for the loop that connects the boiler to the solar heat exchanger. City is willing to cover ½ of this cost. (Provided by Nexgen Solar). $12,246.60.

• Controls interlock between lap pool pump motor, and leisure pool pump motor. (Provided by BTS). $1,932.00

• Controls to monitor solar loop pressure. (Provided by BTS). $3,288.00 • Controls to monitor solar motors. (Provided by BTS). $1,176.00 • Electrical connection repairs per letter of recommended repair from Wayne’s Electric,

including termination points on the exposed wiring, and igniters for the boilers. City is willing to cover ½ of this cost. (Provided by Wayne’s Electric). $1,605.60

• Removal of scope for installation of 3 additional pool pump motors due to shaft incompatibility issues between high efficiency motors and pumps. (McKinstry Company). ($8,520).

• New Boiler Gas Valves and Repaired Boiler Controls to be covered by Nexgen Solar. ($0) – Check amount from Nexgen should = $3,650.00

Cost of Services:

Total Change Order Request Amount reflects change in scope from other allocated funds that were allocated to other Facility Improvement Measures and contingency that have been altered or removed and does not increase contract amount.


These are the agreed upon baseline, escalated, and contractual rates used as bases for calculating cost savings for the individual FIMs. As a quick reference the following table summarizes which buildings are on each rate:

Facility Rate Community Center SG (Xcel Secondary General) / CG-T (Transport Gas) Police HQ / City Hall SG / CG (Xcel Gas) Tony Grampsas Gym SG / CG Public Works SG / CG

Rates: (Electric / Gas) C / CG Rates: (Electric / Gas) SG / CG Rates: (Electric / Gas) SG / CG-TEnergy Escalation Rate (each year) 3.128% Energy Escalation Rate (each year) 3.128% Energy Escalation Rate (each year) 3.128%

Natural Gas Escalation rate (each year) 4.296% Natural Gas Escalation rate (each year) 4.296% Natural Gas Escalation rate (each year) 4.296%

Contract Year 1 Contract Year 1 Contract Year 1

Baseline kWh Rate (winter) Baseline kWh Rate (winter) Baseline kWh Rate (winter)

Baseline kWh Rate (summer) Baseline kWh Rate (summer) Baseline kWh Rate (summer)

Baseline kWh Rate Used 0.0944$ Baseline kWh Rate Used 0.0435$ Baseline kWh Rate Used 0.0435$

Baseline kW Rate (summer & winter) -$ Baseline kW Rate (summer & winter) 15.22$ Baseline kW Rate (summer & winter) 15.22$

Baseline therm Rate 1.0130$ Baseline therm Rate 1.0130$ Baseline therm Rate 0.8354$

Escalated kWh Rate 0.0944$ Escalated kWh Rate 0.0435$ Escalated kWh Rate 0.0435$

Escalated therm Rate 1.0130$ Escalated therm Rate 1.0130$ Escalated therm Rate 0.8354$

Current Year kWh Rate (winter) 0.0879$ Current Year kWh Rate (winter) 0.0392$ Current Year kWh Rate (winter) 0.0392$

Current Year kWh Rate (summer) 0.1137$ Current Year kWh Rate (summer) 0.0485$ Current Year kWh Rate (summer) 0.0485$

Current Year kWh Rate (winter & summer) 0.0965$ Current Year kWh Rate (winter & summer) 0.0423$ Current Year kWh Rate (winter & summer) 0.0423$

Current Year kW Rate (winter & summer) -$ Current Year kW Rate (winter & summer) 13.7367$ Current Year kW Rate (winter & summer) 13.7367$

Current Year Therm Rate 0.5840$ Current Year Therm Rate 0.5840$ Current Year Therm Rate -$


Contractual kW Rate -$ Contractual kW Rate 15.2200$ Contractual kW Rate 15.2200$

Contractual Therm Rate 1.0130$ Contractual Therm Rate 1.0130$ Contractual Therm Rate 0.8354$

Appendix C

Appendix C


For the FIMs involving Lighting and Vending Misers in which total savings is combined across multiple facilities with various utility rates, an aggregate rate is used.

Rates: (Electric / Gas) Lighting Rates: (Electric / Gas) Vending Misers Rates: (Electric / Gas) Pool Lighting

Energy Escalation Rate (each year) 3.128% Energy Escalation Rate (each year) 3.128% Energy Escalation Rate (each year) 3.128%

Natural Gas Escalation rate (each year) 4.296% Natural Gas Escalation rate (each year) 4.296% Natural Gas Escalation rate (each year) 4.296%

Contract Year 1 Contract Year 1 Contract Year 1

Baseline kWh Rate Used 0.0937$ Blended rate acroBaseline kWh Rate Used 0.0800$ Baseline kWh Rate Used 0.0462$

Baseline kW Rate 18.5942$

Baseline therm Rate 0.9850$ Aggregate rate across all buildings combined in FIM Baseline therm Rate 0.8354$

Escalated kWh Rate 0.0937$ Escalated kWh Rate 0.0800$ Escalated kWh Rate 0.0462$

Escalated therm Rate 0.9850$ Escalated therm Rate 0.8354$


Contractual kW Rate -$ Contractual kW Rate -$ Contractual kW Rate 18.5942$

Contractual Therm Rate 0.9850$ Contractual Therm Rate -$ Contractual Therm Rate 0.8354$


Screen shot for AHU-5 at Community Center pool showing current set points for OA damper control, space humidity set points, temperatures, etc.

Note the following: minimum OA damper set point is 10%, space RH% set point is 50%

Appendix D

Appendix D


Screen shot shows that when the humidity set point is intentionally set to a low value to force the de-humidification system to operate the compressor command is “ON” but status remains “OFF”. This is consistent with verification findings where the compressors failed to operate when tested at lower outside air temperatures. Speculation is the refrigerant charge may be low and forcing the compressor to lock-out due to low suction pressure which is exaggerated when operating at lower ambient temperatures.

Appendix D


The following graph shows that for RTU-5 there are a significant number of instances for a call for heating using the gas burner even at somewhat moderate OAT above 30F. The graph first shows that % OA appears to vary considerably ranging from 20% to well over 70% which is much higher than the commissioned 7% - 10% range. It can also be seen that the gas burner % demand is also high much of the time, most likely due to the OA being high, and lack of heat recovery from the compressors which would not operate if high OA is being used for de-humidification.

20%

30%

40%

50%

60%

70%

80%

90%

100%

110%

‐20

‐10

0

10

20

30

40

50

60

70

% OA and

Gas Burne

r Dem

and %

Tempe

rature & RH%

RH% OAT % OA Gas Burner Demand

Appendix D


Baseline trend data showing that actual space humidity setting is at 50% not 40% as was assumed in the original savings calculations:

0.00

10.00

20.00

30.00

40.00

50.00

60.00

70.00

80.00

90.00

100.00

deg

F/ %

RH

Pool Space Conditions Logged By Automation System

Space Temperate

Space Humidity

Appendix D


% UtilizationHrs of Output

Total Hours in Range

Total Therms Produced in Logged Range

Total Incident Therms in

Logged RangeProduced vs. Incident

Avg Solar Fraction

19% 7.75 40.1 17 21 83% 109%

System Area 1,672 ft^2 155.4 m^2 9,344 Est. Annual Output in ThermsBoiler Efficiency 85% 10,992 Est. Annual Gas Savings in Therm

timestampWater Temp TO Array Array BTU/hr Array GPM

Energy Produced by ST System (Therms)

InsolationW/m^2

InsolationBtu/hr

Total Incident Energy at

Panel Surface(Therms) Solar Fraction

11/17/10 8:25 AM 75.2 40,702 35.70 0.03 156.80 83,139 0.07 49%11/17/10 8:30 AM 75.2 21,200 10.20 0.02 163.53 86,709 0.07 24%11/17/10 8:35 AM 75.4 ‐ 10.20 ‐ 170.94 90,640 0.08 0%11/17/10 8:40 AM 75.1 208,179 37.50 0.17 178.67 94,740 0.08 220%11/17/10 8:45 AM 81.1 316,546 35.30 0.26 184.36 97,752 0.08 324%11/17/10 8:50 AM 79.6 219,575 35.30 0.18 193.08 102,381 0.09 214%11/17/10 8:55 AM 79.3 205,224 35.20 0.17 200.08 106,093 0.09 193%11/17/10 9:00 AM 75.9 ‐ 10.20 ‐ 268.62 142,431 0.12 0%11/17/10 9:05 AM 75.7 ‐ 10.20 ‐ 228.04 120,914 0.10 0%11/17/10 9:10 AM 75.7 114,264 36.80 0.10 274.06 145,316 0.12 79%11/17/10 9:15 AM 75.7 200,053 37.10 0.17 336.81 178,589 0.15 112%11/17/10 9:20 AM 75.7 238,487 36.90 0.20 324.10 171,849 0.14 139%11/17/10 9:25 AM 75.6 239,348 36.90 0.20 311.47 165,155 0.14 145%11/17/10 9:30 AM 76.1 238,570 36.90 0.20 313.82 166,401 0.14 143%11/17/10 9:35 AM 76.2 237,553 36.80 0.20 325.62 172,659 0.14 138%11/17/10 9:40 AM 78.2 210,775 37.00 0.18 328.27 174,063 0.15 121%11/17/10 9:45 AM 77.7 239,220 36.90 0.20 342.15 181,419 0.15 132%11/17/10 9:50 AM 76.8 239,214 36.90 0.20 352.93 187,137 0.16 128%11/17/10 9:55 AM 76.3 238,650 36.90 0.20 368.16 195,212 0.16 122%11/17/10 10:00 AM 76 253,867 36.90 0.21 419.39 222,379 0.19 114%11/17/10 10:05 AM 76.4 253,552 37.10 0.21 421.98 223,750 0.19 113%11/17/10 10:10 AM 76.7 253,302 36.80 0.21 428.78 227,353 0.19 111%11/17/10 10:15 AM 76.8 253,306 36.90 0.21 434.27 230,268 0.19 110%11/17/10 10:20 AM 76.7 267,243 37.20 0.22 439.43 233,004 0.19 115%11/17/10 10:25 AM 76.6 267,043 36.70 0.22 447.11 237,077 0.20 113%11/17/10 10:30 AM 76.4 282,813 37.20 0.24 452.82 240,105 0.20 118%11/17/10 10:35 AM 76.4 282,344 37.10 0.24 457.18 242,413 0.20 116%11/17/10 10:40 AM 76.4 180,442 35.30 0.15 463.16 245,585 0.20 73%11/17/10 10:45 AM 76.6 282,591 37.20 0.24 465.90 247,040 0.21 114%11/17/10 10:50 AM 76.7 296,354 36.90 0.25 468.95 248,656 0.21 119%11/17/10 10:55 AM 76.8 296,549 37.20 0.25 470.34 249,394 0.21 119%11/17/10 11:00 AM 76.9 296,357 36.80 0.25 513.36 272,204 0.23 109%11/17/10 11:05 AM 76.9 296,743 36.90 0.25 519.80 275,620 0.23 108%11/17/10 11:10 AM 76.9 295,599 37.00 0.25 527.49 279,697 0.23 106%11/17/10 11:15 AM 77.3 296,688 36.90 0.25 522.96 277,294 0.23 107%11/17/10 11:20 AM 77.1 296,660 37.00 0.25 531.67 281,911 0.23 105%11/17/10 11:25 AM 77.2 296,282 37.00 0.25 513.44 272,247 0.23 109%11/17/10 11:30 AM 77.1 297,919 36.90 0.25 527.01 279,440 0.23 107%11/17/10 11:35 AM 77.5 296,459 37.00 0.25 525.18 278,471 0.23 106%11/17/10 11:40 AM 78.3 252,611 36.80 0.21 526.50 279,168 0.23 90%11/17/10 11:45 AM 79.2 295,125 36.90 0.25 525.27 278,518 0.23 106%11/17/10 11:50 AM 79.2 296,858 36.90 0.25 524.28 277,991 0.23 107%11/17/10 11:55 AM 79.2 296,637 37.10 0.25 522.24 276,912 0.23 107%11/17/10 12:00 PM 79 295,289 37.00 0.25 526.59 279,219 0.23 106%11/17/10 12:05 PM 79.2 296,539 36.90 0.25 523.95 277,818 0.23 107%11/17/10 12:10 PM 78.9 297,239 37.10 0.25 522.02 276,794 0.23 107%11/17/10 12:15 PM 78.6 296,082 36.70 0.25 520.70 276,093 0.23 107%11/17/10 12:20 PM 78.3 281,778 37.00 0.23 517.72 274,514 0.23 103%11/17/10 12:25 PM 78.5 282,032 37.10 0.24 513.98 272,534 0.23 103%11/17/10 12:30 PM 78.3 281,229 36.90 0.23 511.43 271,182 0.23 104%11/17/10 12:35 PM 78.1 281,250 36.80 0.23 507.27 268,974 0.22 105%11/17/10 12:40 PM 78.4 198,931 35.20 0.17 507.33 269,004 0.22 74%11/17/10 12:45 PM 78.1 287,978 37.10 0.24 507.75 269,228 0.22 107%11/17/10 12:50 PM 77.9 288,095 36.90 0.24 503.67 267,063 0.22 108%11/17/10 12:55 PM 78.5 273,146 37.00 0.23 505.84 268,214 0.22 102%11/17/10 1:00 PM 78.7 273,475 37.00 0.23 463.94 245,997 0.20 111%11/17/10 1:05 PM 79.1 273,250 37.00 0.23 453.90 240,676 0.20 114%11/17/10 1:10 PM 79.4 258,442 36.90 0.22 449.84 238,523 0.20 108%11/17/10 1:15 PM 79.4 243,613 36.90 0.20 444.06 235,457 0.20 103%11/17/10 1:20 PM 78.6 257,145 36.90 0.21 442.28 234,516 0.20 110%11/17/10 1:25 PM 78.7 227,676 36.60 0.19 454.25 240,863 0.20 95%11/17/10 1:30 PM 79.3 169,788 36.10 0.14 448.05 237,572 0.20 71%11/17/10 1:35 PM 79 128,062 36.20 0.11 234.77 124,483 0.10 103%11/17/10 1:40 PM 79.4 87,474 36.60 0.07 216.08 114,575 0.10 76%11/17/10 1:45 PM 84.2 190,185 35.00 0.16 246.52 130,714 0.11 145%11/17/10 1:50 PM 82.6 149,175 34.70 0.12 259.84 137,779 0.11 108%11/17/10 1:55 PM 81.9 149,141 34.70 0.12 338.17 179,313 0.15 83%11/17/10 2:00 PM 79.9 127,943 10.20 0.11 340.00 180,280 0.15 71%11/17/10 2:05 PM 84 207,757 35.00 0.17 402.78 213,567 0.18 97%11/17/10 2:10 PM 83.8 194,413 35.10 0.16 346.37 183,659 0.15 106%11/17/10 2:15 PM 83.8 194,066 35.00 0.16 338.54 179,509 0.15 108%11/17/10 2:20 PM 84.4 228,005 35.30 0.19 313.00 165,963 0.14 137%11/17/10 2:25 PM 82.2 158,029 34.80 0.13 226.05 119,862 0.10 132%11/17/10 2:30 PM 81.8 111,815 34.50 0.09 137.82 73,077 0.06 153%11/17/10 2:35 PM 79.9 ‐ 10.20 ‐ 179.34 95,091 0.08 0%11/17/10 2:40 PM 80 ‐ 10.20 ‐ 247.40 131,180 0.11 0%11/17/10 2:45 PM 80 ‐ 10.20 ‐ 249.30 132,187 0.11 0%11/17/10 2:50 PM 79.9 ‐ 10.20 ‐ 233.35 123,732 0.10 0%11/17/10 2:55 PM 81.1 38,669 18.90 0.03 244.43 129,607 0.11 30%11/17/10 3:00 PM 80.3 307,697 36.70 0.26 200.64 106,385 0.09 289%11/17/10 3:05 PM 80.2 194,398 36.70 0.16 232.76 123,417 0.10 158%11/17/10 3:10 PM 80.6 151,951 36.60 0.13 260.76 138,265 0.12 110%11/17/10 3:15 PM 80.4 151,224 36.50 0.13 246.83 130,880 0.11 116%11/17/10 3:20 PM 81 122,719 36.30 0.10 252.10 133,675 0.11 92%11/17/10 3:25 PM 84.5 217,937 35.00 0.18 218.30 115,751 0.10 188%11/17/10 3:30 PM 83.6 135,475 34.70 0.11 225.44 119,538 0.10 113%11/17/10 3:35 PM 83.3 ‐ 32.20 ‐ 217.45 115,301 0.10 0%11/17/10 3:40 PM 81.4 ‐ 10.20 ‐ 212.90 112,890 0.09 0%11/17/10 3:45 PM 80.7 ‐ 10.20 ‐ 189.18 100,309 0.08 0%11/17/10 3:50 PM 80.4 ‐ 10.20 ‐ 153.80 81,553 0.07 0%11/17/10 3:55 PM 80.3 ‐ 10.20 ‐ 139.33 73,876 0.06 0%11/17/10 4:00 PM 80.5 ‐ 10.20 ‐ 95.02 50,383 0.04 0%11/17/10 4:05 PM 80.7 ‐ 10.20 ‐ 75.60 40,084 0.03 0%11/17/10 4:10 PM 81.1 ‐ 10.20 ‐ 59.94 31,780 0.03 0%11/17/10 4:15 PM 81.4 ‐ 10.20 ‐ 39.18 20,777 0.02 0%11/17/10 4:20 PM 80.7 ‐ 10.20 ‐ 35.03 18,576 0.02 0%11/17/10 4:25 PM 81.1 ‐ 10.20 ‐ 36.84 19,534 0.02 0%11/17/10 4:30 PM 81.6 ‐ 10.20 ‐ 21.28 11,283 0.01 0%11/17/10 4:35 PM 82.1 ‐ 10.20 ‐ 13.72 7,272 0.01 0%

Appendix D


Picture of small amount of leakage occurring at the top of the leisure pool pump motor:

Picture of general sky conditions at the time solar thermal system performance was being verified:

Appendix D


Picture of solar thermal array to document overall condition of the system:


Summary of bin data tool input for baseline operating hours for AHU 1 – 4 at the Community Center:

Proposed operating hours schedule, totaling 5,733 hours per year, which is 733 hours less than baseline of 6,466:

Appendix E

Appendix E


The following is a copy of the input parameters for the original energy savings calculations. Note the analysis was done by combining all four RTU’s in the same calculation. Total combined Max CFM is incorrect (input AA), 73,000 CFM would be for RTU 1-4,6, and 7. Total CFM should be for just RTU 1-4 and is actually 57,000. This calculation assumes the minimum OA setting in baseline condition is 12,000 / 73,000 = ~16%

INPUTS: (Exclude Cooling Only Zones) Base ProposedAA Maximum Fan CFM (Including Cooling Only) 73,000 73,000 CFMAB Maximum OSA CFM (=AC if no econ.) 12,000 73,000 CFMAC Minimum OSA CFM 12,000 12,000 CFMAD HVAC On Room Setpoint 70 70 oFAE HVAC Off Room Heating Setpoint 62 62 oFAF HVAC Off Room Cooling Setpoint 78 78 oFAG AHU Heat Eff. or COP 0.7 0.8 COPAH AHU Heating Energy Source Gas Gas Type

AHU Heating Lockout Above 70 70 oFAI Cooling Efficiency 8.0 10.0 BTU/Watt

Cooling Lockout Below 55 55 oFAI2 Air or Water Cooled Condenser Air Air Air, WaterAJ Fan TSP 2 2 in H2OAK Roof Area 60000 60000 SFAL Opaque Wall Area 3,000 3,000 SFAM Glass Area 450 450 SFAN Roof U Value 0.05 0.05 BTU/SF/oFAO Wall U Value 0.083333333 0.083333333 BTU/SF/oFAP Glass U Value 0.5 0.5 BTU/SF/oFAQ Infiltration 0.15 0.15 achAR # of occupants during occupied hrs 30 30 peopleAT Not Used 0AU Lights Occupied (Includes Diversity) 1.0 1.0 W/SFAV Plug Load Occupied (Includes Diversity) 0.5 0.5 W/SFAW Lights Unoccupied 0.05 0.05 W/SFAX Plug Loads Unoccupied 0 W/SFAY Peak Cooling Trans Load (UADT+Solar) 1,979,000 1,979,000 BTUHAZ Design Temp Cool 92 92 oFBA Total Installed Cooling Capacity 183 183 tons (not used BB Total Installed Heating Capacity 1671 1671 MBH out (not uCA Square Footage (Incluidng Cooling Only SF) 71,000 71,000 SFCB Space Height 10 10 Feet

R3 Supply Air Temp. at OSA = 82.5 Single_Zone Single_Zone oFR4 Supply Air Temp. at OSA = 27.5 Single_Zone Single_Zone oF

Single Path or Dual Path Single SingleReheat System Base ProposedR1 Heating Efficiency or COP Zone 1.00 1.00 EfficiencyR2 Heating Energy Source Zone Gas Gas Elec, Gas, SteaR5 Minimum VAV Damper 30% 30% % of MaxR6 Unoccupied Heating Done By AHU Coil AHU Coil Zone, AHU

Appendix E


The following calculation inputs show the corrected values for the baseline & proposed total supply CFM, as well as the correction for the weighted average minimum OSA CFM for all four RTUs. This weighted average comes to roughly 17,176 CFM based on the final test and balance figures shown below. As a result the minimum outside air increased relative to the original savings calculations which assumed the minimum remained the same. This increase resulted in a subsequent reversal from positive gas savings to a negative savings and slight reduction in cooling savings.

INPUTS: (Exclude Cooling Only Zones) Base ProposedAA Maximum Fan CFM (Including Cooling Only) 57,000 57,000 CFMAB Maximum OSA CFM (=AC if no econ.) 12,000 57,000 CFMAC Minimum OSA CFM 12,000 17,176 CFMAD HVAC On Room Setpoint 70 70 oFAE HVAC Off Room Heating Setpoint 62 62 oFAF HVAC Off Room Cooling Setpoint 78 78 oFAG AHU Heat Eff. or COP 0.7 0.8 COPAH AHU Heating Energy Source Gas Gas Type


Cooling Lockout Below 55 55 oFAI2 Air or Water Cooled Condenser Air Air Air, WaterAJ Fan TSP 2 2 in H2OAK Roof Area 60000 60000 SFAL Opaque Wall Area 3,000 3,000 SFAM Glass Area 450 450 SFAN Roof U Value 0.05 0.05 BTU/SF/oFAO Wall U Value 0.083333333 0.083333333 BTU/SF/oFAP Glass U Value 0.5 0.5 BTU/SF/oFAQ Infiltration 0.15 0.15 achAR # of occupants during occupied hrs 30 30 peopleAT Not Used 0AU Lights Occupied (Includes Diversity) 1.0 1.0 W/SFAV Plug Load Occupied (Includes Diversity) 0.5 0.5 W/SFAW Lights Unoccupied 0.05 0.05 W/SFAX Plug Loads Unoccupied 0 W/SFAY Peak Cooling Trans Load (UADT+Solar) 1,979,000 1,979,000 BTUHAZ Design Temp Cool 92 92 oFBA Total Installed Cooling Capacity 183 183 tons (not used BB Total Installed Heating Capacity 1671 1671 MBH out (not uCA Square Footage (Incluidng Cooling Only SF) 71,000 71,000 SFCB Space Height 10 10 Feet

R3 Supply Air Temp. at OSA = 82.5 Single_Zone Single_Zone oFR4 Supply Air Temp. at OSA = 27.5 Single_Zone Single_Zone oF

Single Path or Dual Path Single SingleReheat System Base ProposedR1 Heating Efficiency or COP Zone 1.00 1.00 EfficiencyR2 Heating Energy Source Zone Gas Gas Elec, Gas, SteaR5 Minimum VAV Damper 30% 30% % of MaxR6 Unoccupied Heating Done By AHU Coil AHU Coil Zone, AHU

Supply CFM

T&B min OA Actual

T&B min OA %

OA % Actual, M&V Trends

RTU-1 16000 4815 30% 20%

RTU-2 12500 2761 22% 0%

RTU-3 12500 4600 37% 35%

RTU-4 16000 5000 31% 65%

57000 17176 30%

30% 32% Weighted Avg Min OA%

17,176 17,975 Weighted Avg Min OA CFM


Copies of boiler efficiency test results for Public Works Building. Note that % Eff value is 87% when tested at various firing rate conditions.

Appendix F

Appendix F


Copy of the input parameters used to calculate savings for the gas fired unit heater thermostat set-back portion of this FIM. Note that original calculation used a total roof area of 15,000 sqft, wall area of 10,000 sqft, and window area of 1,000 sqft. These were modified to reflect set back only for the flocculation tank building by changing to 10,000, 6,000, and 0 sqft respectively.

INPUTS: (Exclude Cooling Only Zones) Base ProposedBaselining Method (Audit Plan)

AA Maximum Fan CFM (Including Cooling Only) 1 1 CFMAB Maximum OSA CFM (=AC if no econ.) 1 1 CFMAC Minimum OSA CFM 1 1 CFMAD HVAC On Room Setpoint 65 50 oFAE HVAC Off Room Heating Setpoint 54 54 oFAF HVAC Off Room Cooling Setpoint 78 78 oFAG AHU Heat Eff. or COP 0.7 0.7 COPAH AHU Heating Energy Source Gas Gas Type


Cooling Lockout Below 150 150 oFAI2 Air or Water Cooled Condenser Air Air Air, WaterAJ Fan TSP 1 1 in H2OAK Roof Area 10000 10000 SFAL Opaque Wall Area 6,000 6,000 SFAM Glass Area 0 0 SFAN Roof U Value 0.1 0.1 BTU/SF/oFAO Wall U Value 0.1 0.1 BTU/SF/oFAP Glass U Value 1 1 BTU/SF/oFAQ Infiltration 0.2 0.2 achAR # of occupants during occupied hrs 2 2 peopleAT Not Used 0AU Lights Occupied (Includes Diversity) 0.5 0.5 W/SFAV Plug Load Occupied (Includes Diversity) 0.1 0.1 W/SFAW Lights Unoccupied 0.05 0.05 W/SFAX Plug Loads Unoccupied 0 W/SFAY Peak Cooling Trans Load (UADT+Solar) 420,000 420,000 BTUHAZ Design Temp Cool 92 92 oFBA Total Installed Cooling Capacity 35 35 tons (not used in calc)BB Total Installed Heating Capacity 1 1 MBH out (not used in calc)CA Square Footage (Incluidng Cooling Only SF) 15,000 15,000 SFCB Space Height 30 30 Feet

R3 Supply Air Temp. at OSA = 82.5 Single_Zone Single_Zone oFR4 Supply Air Temp. at OSA = 27.5 50 50 oF

Single Path or Dual Path Single SingleReheat System Base ProposedR1 Heating Efficiency or COP Zone 1.00 1.00 EfficiencyR2 Heating Energy Source Zone Gas Gas Elec, Gas, SteamR5 Minimum VAV Damper 30% 30% % of MaxR6 Unoccupied Heating Done By AHU Coil AHU Coil Zone, AHU

J. McMullin:Original: 15,000Revised: 10000

J. McMullin:Original: 15,000Revised: 6,000

J. McMullin:Original: 1,000Revised: 0


The following are screen captures of the fan speed modulation and static pressure values for the VFDs at City Hall. This system does not have capability to download trend data. Note that one air handler operates within a range of 60 – 70%, the other in the 75 – 85% range. Both are controlling fan speed to maintain a static pressure set point of about 2.0” W.C. as proposed.

Appendix G

Appendix G


Appendix G


Pictures showing that VFDs are not in by-pass:


The following shows the basis for proposed reduced schedule for FIM 5.12 at Tony Grampsas Gym:

Appendix H

Appendix H


The following is a snapshot of data collect from the DDC to analyze actual run time on both AHUs as compared to occupancy sensor data:

North AHU South AHU Occupancy SensorTotal Time in Range 555:07:06 Hours: Min: Sec Total Time in Range 174:34:20 Hours: Min: Sec Total Time in Range 956:15:44 Hours: Min: SecTotal Operating Time 93:13:32 Hours: Min: Sec Total Operating Time 94:55:18 Hours: Min: Sec Total Occupied Time 186:36:34 Hours: Min: SecPercent Run Time 17% Percent Run Time 54% Percent Occupancy 20%Extrapolated Annual Hours 1,473 Extrapolated Annual Hours 4,768 Extrapolated Annual Hours 1,711

North Fan Status Elapsed Time

South Fan Status Elapsed Time

South AHU Occupancy Elapsed Time

12/19/10 6:57 PM FALSE ON 1/5/11 2:50 AM FALSE ON 12/3/10 1:10 PM OCC 1:26:3612/19/10 7:02 PM TRUE OFF 1/5/11 3:00 AM TRUE OFF 12/3/10 2:36 PM UNOCC12/19/10 7:09 PM FALSE ON 0:03:00 1/5/11 3:08 AM FALSE ON 0:11:24 12/4/10 1:02 PM OCC 0:00:0612/19/10 7:12 PM TRUE OFF 1/5/11 3:20 AM TRUE OFF 12/4/10 1:02 PM UNOCC12/19/10 7:17 PM FALSE ON 0:03:36 1/5/11 3:27 AM FALSE ON 0:11:29 12/4/10 1:36 PM OCC 0:33:5112/19/10 7:21 PM TRUE OFF 1/5/11 3:38 AM TRUE OFF 12/4/10 2:10 PM UNOCC12/19/10 7:28 PM FALSE ON 0:02:54 1/5/11 3:45 AM FALSE ON 0:10:53 12/5/10 2:13 PM OCC 3:09:1512/19/10 7:31 PM TRUE OFF 1/5/11 3:56 AM TRUE OFF 12/5/10 5:22 PM UNOCC12/19/10 7:38 PM FALSE ON 0:03:00 1/5/11 4:02 AM FALSE ON 0:07:54 12/6/10 8:25 AM OCC 2:49:4612/19/10 7:41 PM TRUE OFF 1/5/11 4:10 AM TRUE OFF 12/6/10 11:15 AM UNOCC12/19/10 7:47 PM FALSE ON 0:03:00 1/5/11 4:17 AM FALSE ON 0:11:05 12/6/10 12:00 PM OCC 1:09:5412/19/10 7:50 PM TRUE OFF 1/5/11 4:28 AM TRUE OFF 12/6/10 1:10 PM UNOCC

12/20/10 11:40 AM FALSE ON 0:20:16 1/5/11 4:35 AM FALSE ON 0:13:59 12/6/10 4:36 PM OCC 0:35:2212/20/10 12:00 PM TRUE OFF 1/5/11 4:49 AM TRUE OFF 12/6/10 5:11 PM UNOCC12/20/10 1:16 PM FALSE ON 0:30:22 1/5/11 4:56 AM FALSE ON 0:11:23 12/6/10 5:20 PM OCC 3:42:0712/20/10 1:47 PM TRUE OFF 1/5/11 5:07 AM TRUE OFF 12/6/10 9:02 PM UNOCC12/20/10 2:08 PM FALSE ON 0:04:54 1/5/11 5:15 AM FALSE ON 0:12:29 12/7/10 12:16 PM OCC 6:45:3512/20/10 2:13 PM TRUE OFF 1/5/11 5:27 AM TRUE OFF 12/7/10 7:02 PM UNOCC12/20/10 5:31 PM FALSE ON 0:15:23 1/5/11 5:34 AM FALSE ON 0:11:53 12/8/10 8:31 AM OCC 4:44:0112/20/10 5:47 PM TRUE OFF 1/5/11 5:46 AM TRUE OFF 12/8/10 1:15 PM UNOCC12/20/10 8:11 PM FALSE ON 1:03:19 1/5/11 5:53 AM FALSE ON 0:09:59 12/8/10 5:08 PM OCC 4:01:2312/20/10 9:14 PM TRUE OFF 1/5/11 6:03 AM TRUE OFF 12/8/10 9:09 PM UNOCC12/20/10 9:20 PM FALSE ON 0:11:35 1/5/11 6:11 AM FALSE ON 0:11:53 12/9/10 7:54 AM OCC 0:17:4612/20/10 9:32 PM TRUE OFF 1/5/11 6:23 AM TRUE OFF 12/9/10 8:12 AM UNOCC12/20/10 9:38 PM FALSE ON 0:05:23 1/5/11 6:31 AM FALSE ON 0:10:23 12/9/10 8:58 AM OCC 0:28:1612/20/10 9:43 PM TRUE OFF 1/5/11 6:41 AM TRUE OFF 12/9/10 9:26 AM UNOCC12/20/10 9:49 PM FALSE ON 0:03:06 1/5/11 6:49 AM FALSE ON 0:10:29 12/9/10 9:52 AM OCC 0:19:1012/20/10 9:52 PM TRUE OFF 1/5/11 6:59 AM TRUE OFF 12/9/10 10:11 AM UNOCC12/20/10 9:58 PM FALSE ON 0:03:36 1/5/11 7:07 AM FALSE ON 0:11:29 12/9/10 12:34 PM OCC 2:38:5412/20/10 10:02 PM TRUE OFF 1/5/11 7:19 AM TRUE OFF 12/9/10 3:13 PM UNOCC12/20/10 10:08 PM FALSE ON 0:02:54 1/5/11 7:26 AM FALSE ON 0:10:53 12/9/10 5:30 PM OCC 3:53:0612/20/10 10:11 PM TRUE OFF 1/5/11 7:37 AM TRUE OFF 12/9/10 9:23 PM UNOCC12/20/10 10:18 PM FALSE ON 0:02:53 1/5/11 7:44 AM FALSE ON 0:09:23 12/10/10 10:46 AM OCC 2:08:2012/20/10 10:20 PM TRUE OFF 1/5/11 7:53 AM TRUE OFF 12/10/10 12:54 PM UNOCC12/21/10 11:32 AM FALSE ON 0:32:52 1/5/11 8:00 AM FALSE ON 0:10:53 12/10/10 2:53 PM OCC 0:00:0612/21/10 12:05 PM TRUE OFF 1/5/11 8:11 AM TRUE OFF 12/10/10 2:53 PM UNOCC12/21/10 12:11 PM FALSE ON 0:07:41 1/5/11 8:17 AM FALSE ON 0:13:29 12/10/10 2:53 PM OCC 0:00:0612/21/10 12:18 PM TRUE OFF 1/5/11 8:31 AM TRUE OFF 12/10/10 2:53 PM UNOCC12/21/10 12:24 PM FALSE ON 0:05:06 1/5/11 8:37 AM FALSE ON 2:24:43 12/10/10 2:58 PM UNOCC12/21/10 12:29 PM TRUE OFF 1/5/11 11:02 AM TRUE OFF 12/10/10 4:53 PM OCC 0:00:0612/21/10 12:34 PM FALSE ON 0:03:30 1/5/11 3:57 PM FALSE ON 0:18:41 12/10/10 4:53 PM UNOCC12/21/10 12:38 PM TRUE OFF 1/5/11 4:15 PM TRUE OFF 12/10/10 4:54 PM UNOCC12/21/10 12:44 PM FALSE ON 0:05:41 1/5/11 9:27 PM FALSE ON 5:31:11 12/10/10 5:48 PM OCC 3:08:5712/21/10 12:49 PM TRUE OFF 1/6/11 2:58 AM TRUE OFF 12/10/10 8:57 PM UNOCC12/21/10 12:52 PM FALSE ON 0:03:24 1/6/11 3:05 AM FALSE ON 0:22:22 12/11/10 8:33 AM OCC 8:11:0912/21/10 12:56 PM TRUE OFF 1/6/11 3:28 AM TRUE OFF 12/11/10 4:44 PM UNOCC12/21/10 1:02 PM FALSE ON 0:03:36 1/6/11 3:34 AM FALSE ON 0:20:28 12/12/10 3:07 PM OCC 3:18:0912/21/10 1:05 PM TRUE OFF 1/6/11 3:55 AM TRUE OFF 12/12/10 6:25 PM UNOCC12/21/10 1:11 PM FALSE ON 0:04:36 1/6/11 4:02 AM FALSE ON 0:20:29 12/13/10 8:25 AM OCC 2:57:5812/21/10 1:16 PM TRUE OFF 1/6/11 4:23 AM TRUE OFF 12/13/10 11:23 AM UNOCC12/21/10 1:21 PM FALSE ON 0:02:53 1/6/11 4:29 AM FALSE ON 0:14:53 12/13/10 11:56 AM OCC 1:25:1712/21/10 1:24 PM TRUE OFF 1/6/11 4:44 AM TRUE OFF 12/13/10 1:21 PM UNOCC12/21/10 1:30 PM FALSE ON 0:04:06 1/6/11 4:51 AM FALSE ON 0:16:22 12/13/10 4:40 PM OCC 0:19:0512/21/10 1:34 PM TRUE OFF 1/6/11 5:07 AM TRUE OFF 12/13/10 4:59 PM UNOCC12/21/10 1:39 PM FALSE ON 0:03:00 1/6/11 5:14 AM FALSE ON 0:12:29 12/13/10 5:08 PM OCC 4:15:5812/21/10 1:42 PM TRUE OFF 1/6/11 5:26 AM TRUE OFF 12/13/10 9:24 PM UNOCC12/21/10 1:48 PM FALSE ON 0:05:54 1/6/11 5:33 AM FALSE ON 0:11:24 12/14/10 12:39 PM OCC 1:38:2812/21/10 1:54 PM TRUE OFF 1/6/11 5:44 AM TRUE OFF 12/14/10 2:17 PM UNOCC12/21/10 1:59 PM FALSE ON 0:02:53 1/6/11 5:51 AM FALSE ON 0:11:59 12/14/10 4:41 PM OCC 4:27:1512/21/10 2:02 PM TRUE OFF 1/6/11 6:03 AM TRUE OFF 12/14/10 9:08 PM UNOCC12/21/10 2:07 PM FALSE ON 0:04:54 1/6/11 6:10 AM FALSE ON 0:13:28 12/15/10 8:06 AM OCC 0:21:5212/21/10 2:12 PM TRUE OFF 1/6/11 6:23 AM TRUE OFF 12/15/10 8:28 AM UNOCC12/21/10 2:17 PM FALSE ON 0:03:30 1/6/11 6:30 AM FALSE ON 0:12:23 12/15/10 8:38 AM OCC 2:48:0412/21/10 2:21 PM TRUE OFF 1/6/11 6:42AM TRUE OFF 12/15/10 11:27 AM UNOCC


Photos showing use of Vending Misers at Community Center and electric point of use DHW heaters at the Police HQ:

Appendix I

Documents

City of Golden – Measurement and Verification Report