AC Transit Greenhouse Gas Transit IMP_CY2009.pdf66th Ave 905 66th Ave 66th Ave 1400 Franklin Street...

AC Transit Greenhouse Gas Inventory Management Plan

August 10, 2010

Prepared by:

50 Hegenberger Loop, Oakland, CA 94621

AC Transit – GHG Inventory Management Plan, CY2009 Inventory

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Table of Contents

1. INTRODUCTION .............................................................................................. 4

2. INFORMATION ABOUT THE ORGANIZATION........................................ 4

3. GEOGRAPHIC SCOPE AND REPORTED GASES ....................................... 5

4. ORGANIZATIONAL BOUNDARY ................................................................. 5

EAST BAY PARATRANSIT CONSORTIUM ......................................................................................... 7

5. OPERATIONAL BOUNDARY ......................................................................... 8

CATEGORIES OF EMISSIONS AND SOURCE IDENTIFICATION ......................................................... 8 PROCEDURE FOR IDENTIFYING EMISSIONS SOURCES ..................................................................... 8 REQUIRED REPORTING ..................................................................................................................... 9 SIMPLIFIED ESTIMATION METHODS ................................................................................................10 OPTIONAL REPORTING ..................................................................................................................11

6. EVALUATION OF EMISSIONS TRENDS .................................................... 11

DIRECT EMISSIONS – MOBILE SOURCES ........................................................................................12 INDIRECT EMISSIONS – PURCHASED ELECTRICITY ........................................................................13 DIRECT EMISSIONS – STATIONARY SOURCES ...............................................................................13

7. ASSUMPTIONS AND METHODOLOGY .................................................... 13

7.1 DIRECT EMISSIONS FROM MOBILE SOURCES (FLEET VEHICLES) .....................................13 7.2 INDIRECT EMISSION FROM IMPORTED ELECTRICITY .......................................................15 7.3 DIRECT EMISSIONS FROM STATIONARY COMBUSTION OF NATURAL GAS (FURNACES AND WATER HEATERS) ..................................................................................................................17 7.4 DIRECT EMISSIONS FROM STATIONARY EQUIPMENT (MINOR SOURCES) .....................18

8. INVENTORY MANAGEMENT ...................................................................... 19

QUALITY ASSURANCE / QUALITY CONTROL...............................................................................19 INVENTORY ARCHIVES ....................................................................................................................19


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Tables Table 1. AC Transit Facility Summary

Table 2. AC Transit - CO2 Emissions Source Summary

Table 3. AC Transit - CY2009 COs Emissions Summary (metric tons)

Table 4. AC Transit CO2 Emissions (metric tons), Year-Over-Year Comparison

Table 5. AC Transit – Mobile Combustion Fuel Use Summary

Table 6. AC Transit – Sheriff, UC Berkeley and Back-Up Generator Fuel Use

Figures Figure 1 - AC Transit CY2009 CO2 Emissions Summary – Metric Tons by Category

Appendices Appendix A: Mobile Source Lists

Appendix B: AC Transit Utility Accounts (electricity and natural gas)

Appendix C: Standby Emergency Generator list

Appendix D: CY2009 GHG Inventory Summary and Electronic Files (CD-ROM)

Appendix E: CRIS Report


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1. INTRODUCTION The Alameda-Contra Costa County Transit District (AC Transit) has committed to The Climate Registry (TCR) to estimate and report its greenhouse gas (GHG) emissions. Following the guidelines described by TCR, this commitment involves the estimation of GHG emissions resulting from AC Transit business practices, compilation of a GHG inventory and reporting of the inventory results via the Climate Registry Information System (CRIS).

This Inventory Management Plan (IMP) outlines the procedures and guidelines followed during preparation of AC Transit’s 2009 GHG Inventory for TCR, designed to meet the requirements of TCR’s General Reporting Protocol.1

The IMP serves as a centralized record for reporting elements, boundary descriptions, assumptions, methodologies, and other documentation associated with the AC Transit GHG Inventory. It is considered a living document that will be revised and updated annually to keep information on the inventory current and easy to follow.

2. INFORMATION ABOUT THE ORGANIZATION AC Transit is the fourth largest transit agency in California and the third largest bus-only transit operator in the United States. AC Transit provides the primary public transport service within the San Francisco East Bay region, while BART (the Bay Area’s high-speed electric rail system) provides most regional connections to San Francisco and elsewhere. The AC Transit District (the District) includes an extensive network of local, express and Transbay routes blanketing 13 cities and adjacent unincorporated areas in Alameda and Contra Costa Counties along the east shores of San Francisco and San Pablo Bays. It includes older urban, higher density areas such as Oakland, Berkeley and Alameda, along with newer, lower-density areas. Among transit districts in California, AC Transit has the third highest population density, after San Francisco and Los Angeles.

Entity Name: Alameda-Contra Costa County Transit District (AC Transit)

Corporate Address:

1600 Franklin Street Oakland, CA 94612

AC Transit Inventory Contact: Sue Chaewsky District Environmental Engineer 10626 International Boulevard Oakland, California 94603 (510) 577-8869 [email protected]

1 The Climate Registry General Reporting Protocol Version 1.1, May 2008.

mailto:[email protected]�


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AC Transit Inventory Management Team:

Sue Chaewsky District Environmental Engineer 10626 International Boulevard Oakland, California 94603 (510) 577-8869 [email protected] Jamie Levin Director of Marketing and Alternative Fuels Policy 1600 Franklin St. Oakland, CA 94612 (510) 891-7244 [email protected]

Christina Ebojo Administrative Coordinator, Marketing & External Affairs 1600 Franklin St. Oakland, CA 94612 (510) 891-7245 [email protected]

3. GEOGRAPHIC SCOPE AND REPORTED GASES TCR requires its members to report on an annual basis, with no breaks in reporting. At a minimum, members must report at least 95% of their entity-wide emissions of carbon dioxide (CO2) for certain direct and indirect emissions. In the first two years after joining TCR, members must report at a minimum their CO2 emissions in California or nation-wide, depending on the geographic scope of the inventory. Starting with the third year, members must report all six Kyoto gases - CO2, methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs) and sulfur hexafluoride (SF6), entity-wide.

The CY2009 GHG Inventory represents AC Transit’s first year of reporting to TCR. The geographic scope of the AC Transit GHG Inventory is the State of California and the chemical boundary is CO2 in this first year of reporting (CY2009).

4. ORGANIZATIONAL BOUNDARY The organizational boundary encompasses all the facilities and operations that AC Transit owns or controls in the geographic boundary (State of California). AC Transit is





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reporting all of the associated CO2 emissions for those operations and facilities that it wholly owns. For those operations in which AC Transit has a partial ownership or working interest, or holds an operating lease, there are two accounting options for reporting CO2 emissions:

1. Management control – • Report 100% of emissions for facilities which participant has management

control (determined using either operational or financial criteria consistently across all operations);

• Report 0% of emissions for facilities which participant does not have operational or financial control.

2. Equity share – Percentage of emissions accounted for as proportionate to ownership.

AC Transit has chosen to delineate its organizational boundary using the operational criteria under management control. Therefore, AC Transit is reporting 100% of emissions associated with the facilities and operations for which it has operational control. Table 1 (below) lists the facilities within the organizational boundary of AC Transit during CY2009, as determined by operational management control. The Newark facility is currently occupied by a tenant under an operational lease and is deemed to be outside AC Transit’s operational management control; thus it is excluded from the organizational boundary. A new facility was purchased partway through 2008 at 66th Ave. The 66th Ave facility is leased to tenants who are responsible for 11 of the 14 meters present at the location.

Table 1. AC Transit Facility Summary

Facility Location AC Transit Designation Fleet Vehicles – Revenue & Non

Revenue Various FLEET

Emeryville Bus Yard 47th Street, Emeryville D2 Richmond Bus Yard – including

hydrogen fueling station (electrolysis) 21st Street, Richmond D3

Seminary Bus Yard – including hydrogen fueling station (natural gas reformation)

Seminary Avenue, Oakland D4

Hayward Bus Yard Hayward D6 Central Maintenance Facility International Blvd., Oakland CMF

Corporate Offices Downtown Oakland Corp Training Facility Adjacent to Hayward Yard TEC

Radio Communication Tower San Bruno Mountain RCT Eastmont Transit Center Eastmont Mall, Fruitvale ETC

Richmond Parkway Transit Center Richmond RPTC 66th Ave 905 66th Ave 66th Ave

1400 Franklin Street Office 1400 Franklin Street, Oakland

1400 Franklin


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The facilities at D4 include a hydrogen generation/fueling station that is a collaboration of more than 28 business and government partners. The hydrogen at D4 is generated using natural gas reformation, and the natural gas usage is sub-metered and tracked at D4. AC Transit has determined that they have operational control over the hydrogen generation and fueling stations.

AC Transit is reporting its GHG emissions to TCR at the ‘facility level’ and is also reporting an aggregate number for the ‘entity’ (all of AC Transit).2

East Bay Paratransit Consortium

AC Transit tracks GHG emissions data for each facility in their organizational boundary, and reports the annual total for each facility in CRIS, TCR’s on-line reporting tool.

The East Bay Paratransit Consortium (EBP) was established by AC Transit and the San Francisco Bay Area Rapid Transit District (BART) to jointly provide ADA paratransit services, as mandated by the Americans with Disabilities Act of 1990, in the overlapping service areas of the two agencies. The Boards of the two transit agencies govern the ADA program. For reporting, budgeting, and payment purposes, the two transit agencies have agreed to a split of 69% for AC Transit and 31% for BART.

EBP is made up of four transportation providers that include AC Transit and three private vehicle providers. AC Transit and BART provide management and oversight to the program, but have elected to contract out the operation to a paratransit broker (Veolia Transportation), who in turn contracts with service provider firms, which include AC Transit and three additional private vehicle providers. AC Transit owns and operates 38 to 46 paratransit vehicles under service to EBP. AC’s paratransit unit operates under the same requirements as those of the private providers. All four vehicle providers invoice Veolia based on operating hours, and Veolia invoices AC Transit and BART according to their pro rata share. Veolia’s invoices are based on operating hours and a fuel surcharge, and Veolia bills everything at cost plus percentage.

Veolia also manages the operation of a call center. EBP does not directly operate the call center - the intent is to always contract it out. Veolia negotiates the call center contract and holds the lease. Veolia bills the EBP for the cost of the lease plus a management fee. EBP has no legal or contractual obligation to the leased space.

All EBP vehicles owned by AC Transit were fueled from tanks at AC Transit’s D4 facility during 2009. Under the EBP arrangement, AC Transit has operational control over the paratransit vehicles it uses to serve the EBP (AC Transit owns and operates these vehicles). Thus, the GHG emissions from fuel used by these vehicles fall within the operational boundary of AC Transit. AC Transit does not have operational control over the vehicles owned by the three private providers, so emissions from those vehicles do not fall within their operational boundary. Veolia has operational control over the call center - thus, the emissions associated with the call center should fall within the operational boundary of Veolia.

2 Note: Public reports made available through the California Registry database provide only entity-level GHG emissions data.


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5. OPERATIONAL BOUNDARY

Categories of Emissions and Source Identification

The GRP requires TCR members to account for emissions in the following categories: • Direct emissions from sources owned or controlled by the member:

o Mobile combustion sources; o Stationary combustion sources; o Process functions; and o Fugitive sources.

• Indirect emissions from sources that occur because of a participant’s actions: o Purchased and consumed electricity; and o Purchased and consumed heat, steam or cooling.

AC Transit generates CO2 emissions for all of the above categories except “process functions,” “fugitive sources” and “purchased and consumed heat, steam or cooling.” For the applicable categories, Table 2 provides a summary of facilities and their CO2-producing sources that have been identified within AC Transit’s organizational boundary.

Table 2. AC Transit - CO2 Emissions Source Summary

Facility

Category Source Fleet D2 D3 D4 D6 CMF Corp TEC RCT ETC RPTC 66th Ave

1400 Frank

Direct, mobile

Combustion engines

Indirect, electricity

Imported electricity

Direct, stationary Furnaces

Direct, stationary

Emergency generators

Direct, stationary

CO2 –machining & welding

Legend: = CO2 emissions reported

= de minimis

Procedure for Identifying Emissions Sources

The emission source identification procedure involved two parallel efforts: meetings and conversations with AC Transit’s District Environmental Engineer, Facilities Maintenance Manager, and Director of Marketing and Alternative Fuels Policy to discuss operations and potential sources; and review of existing documents that include AC Transit’s 2004


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Environmental Assessment Report and annual submissions to the National Transit Database (NTDB) regarding operational data on buses. The NTDB reports are externally audited. In addition, AC Transit’s three Environmental Sustainability Reports covering CY2004-2008 involved a comprehensive environmental footprint analysis that included fuel and energy use. AC Transit is in the process of completing their fourth report for CY2009. Additionally AC Transit is in the process of completing a Climate Action Plan to analyze and implement new GHG emission reduction strategies.

This information was supplemented by interviews with individual managers who are responsible for facility management, facility maintenance, and material inventories.

Appendix A includes the list of fleet vehicles (revenue vehicles) in AC Transit’s Ellipse Register as of December 31, 2009. This data was used as the basis for AC Transit’s 2009 NTDB report. Appendix A also includes a list of AC Transit non-revenue fleet vehicles, and a list of forklifts (this has not changed since the CY2006 Inventory). There are 4 forklifts that use propane and 13 that run on electricity.

Appendix B provides the list of utility meters (electricity and natural gas) served by PG&E. The list is based on information provided by AC Transit’s PG&E Account Representative. Appendix B does not include meters associated with MMA Renewable Ventures Solar Fund, which also provides electricity to Facilities, D4 and D6.

Appendix C provides a list of standby generators and their fuel use estimates. This list is based on a list of generators compiled by AC Transit in March 2002 (generator info.pdf) for the purpose of securing air permits from the Bay Area Air Quality Management District (BAAQMD). Updated information about additional generators at D2 and the Corporate Offices was obtained from the AC Transit Environmental Engineer (Sue Chaewsky).

AC Transit also has an unknown number of welding and machining torches that use acetylene and carbon dioxide gas.

Required Reporting

According to the GRP, AC Transit is required to report CO2 emissions from the following sources (listed in order of magnitude, based on the CY2009 Inventory emissions estimates, which are summarized in Appendix D):

Direct emissions from mobile combustion

Direct emissions from vehicles owned or controlled by AC Transit contribute approximately 93.5% to the CY2009 GHG Inventory. AC Transit’s fleet includes revenue and non-revenue vehicles. Revenue vehicles (bus fleet) are powered by diesel, with the exception of three hydrogen fuel cell buses. Diesel use by revenue vehicles represents the largest portion of AC Transit’s greenhouse gas inventory, representing approximately 91.6% of total CO2 emissions.

Indirect emissions from imported electricity

Indirect emissions from purchased electricity from PG&E and MMA for office and facility operations represent approximately 3.6% of AC Transit’s CY2009 GHG Inventory.


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Direct emissions from stationary combustion (natural gas)

Natural gas purchased from PG&E for furnaces and hot water heaters represents approximately 2.9% of AC Transit’s CY2009 GHG Inventory.

Simplified Estimation Methods

TCR recognizes that for many organizations, identifying, quantifying, and reporting the entirety of GHG emissions is expensive and burdensome, especially where there are many small facilities or sources that represent a small fraction of total emissions. TCR allows the reporting entity to set aside emissions and report them using estimation criteria that are less rigorous. Emissions that are calculated using simplified estimation methods must account for less than 5% of the overall emissions for the organization and must use upper-bound assumptions. The 5% threshold can represent any combination of sources or gases.

The majority of sources that required simplified estimation methods have not changed from the initial inventory completed by AC Transit for CY2006. In CY2009, AC Transit used simplified methods to estimate electricity emissions for 1400 Franklin Street because alternative electricity calculation methodologies were used to estimate emissions. Summed up, these sources are estimated to account for approximately 0.09% of the total CO2 emissions. Calculations for these small stationary sources and electricity emissions from 1400 Franklin are performed in the master inventory workbook (‘AC Transit_CY2009 GHG Inventory.xls’).

Standby Generators (Direct, Stationary)

AC Transit has diesel-powered standby generators at D2 (two), D3 (one), D4 (one), D6 (two), CMF (one), and the Central corporate office (three). Fuel usage is estimated using the number of operating hours multiplied by the fuel consumption rate indicated by manufacturer’s specs for each generator. For air permitting purposes, the upper bound in CY2009 was 20 hours per year for non-emergency testing. This figure is used as the upper bound. Generators are fueled from the same fuel tank that supplies the fleet vehicles. Thus, the estimated fuel usage for standby generators is subtracted from the overall fuel usage to represent net mobile source emissions. The emissions estimate for standby generators is included in the ‘Generators’ tab of the master inventory workbook.

Compressed Gas (Direct, Stationary)

AC Transit has several welding and cutting torches that use acetylene gas. AC Transit also uses a blend of compressed Argon and CO2 for machining in its Central Maintenance Facility (CMF). Emissions estimates from Acetylene and CO2 gas usage are included in the ‘Compressed gases’ tab of the master inventory workbook.

Propane-powered Forklifts (Direct, Mobile)

AC Transit has four forklifts that run on propane. The emissions estimate for forklifts is included in the ‘2009 Fuel’ tab of the master inventory workbook.


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Optional Reporting

For the CY2009 GHG Inventory, AC Transit is not reporting CO2 emissions for any optional category.

6. EVALUATION OF EMISSIONS TRENDS Results of the CY2009 GHG Inventory are summarized in the Table 3 and Figure 1, below. Direct emissions from mobile sources make up approximately 93.5% of the Inventory.

Table 3. AC Transit - CY2009 CO2 Emissions Summary (metric tons)

Category Source Total % of

Total

Direct, mobile Combustion engines

68,838.13 93.51%

Indirect, electricity Imported electricity 2,613.46 3.55%

Direct, stationary Furnaces, water heaters 2,103.59 2.86%

Indirect, electricity Leased office-space 28.70 0.04%

Direct, stationary (generators) Emergency generators 29.69 0.04%

Direct, mobile (forklifts) Forklifts 4.86 0.01%

Direct, stationary (acetylene) Acetylene torches 0.24 0.00%

Direct, stationary (compressed gas) Compressed gas-machining 0.06 0.00%

Total

74,796.86 100.00% Notes: Simplified Estimation Methods were used for sources shaded gray.

Figure 1 - AC Transit CY2009 CO2 Emissions Summary – Metric Tons by

Category

93.5%

3.5% 2.9% 0.1%

Direct, mobile

Indirect, electricity

Direct, stationary

Simplified Estimation Methods


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Table 4 compares the CY2006 through CY2009 Inventories. The CY2009 Inventory is similar to the CY2008 Inventory, with a year-over-year total decrease of 1,178 metric tons CO2. This decrease of approximately 1.6 % is primarily due to a decrease in indirect emissions from imported electricity.

Table 4. AC Transit CO2 Emissions (metric tons), Year-Over-Year Comparison

Total CO2 2008 to 2009

Emission Category (Source) 2006 2007 2008 2009 % change

Direct Mobile (combustion engines) 64,246 67,337 69,598 68,838 -1.10%

Imported electricity 2,438 2,289 3,074 2,613 -17.62%

Direct Stationary (Natural gas furnaces

& water heaters) 1,965 2,131 2,060 2,104 2.07%

Imported electricity (leased office space) - - 28.4 28.7 1.03%

Direct Mobile (emergency generators)

134 54.1 29.7 29.7 0.00%

Direct Mobile (forklifts) 18 8 6.4 4.9 -31.76%

Direct Stationary (compressed gas-

machining) 0.02 0.23 0.02 0.06 65.36%

Direct Stationary (acetylene torches) 0.07 0.02 0.24 0.24 0.00%

68,801 71,819 74,797 73,619 -1.60%

Notes: Sources shaded gray are categorized as de minimis within CRIS.

Direct Emissions – Mobile Sources

Direct emissions from mobile sources made up the largest portion of the CY2009 Inventory, representing approximately 93.5% of total emissions. In CY2008, direct mobile emissions represented approximately 93.0% of total emissions. The year-over-year decrease in direct mobile emissions is approximately 1.1%. This increase is due to decreased diesel and gasoline consumption in 2009.


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Indirect Emissions – Purchased Electricity

Indirect emissions from purchased electricity represent approximately 3.6% of the CY2009 Inventory. In CY2008, indirect emissions from purchased electricity represented approximately 4.1% of total emissions. The decrease in electricity usage from 10,757,533 kWh to 9,082,318 kWh between CY2008 and CY2009 lead to a 17.6% decrease in indirect emissions.

Direct Emissions – Stationary Sources

Direct emissions from stationary sources emissions represent approximately 2.9% of CY2009 total emissions, which is consistent with CY2008.

7. ASSUMPTIONS AND METHODOLOGY The following subsections contain information on data collection, emissions factors, and other assumptions and methodologies for each of the reporting categories in the CY2009 GHG Inventory.

7.1 Direct Emissions from Mobile Sources (Fleet Vehicles)

Direct emissions from mobile sources include the combustion of fuels in transportation devices that are owned and controlled by AC Transit. AC Transit’s fleet vehicles include revenue generating vehicles (i.e. buses), and non-revenue generation vehicles. Revenue and non-revenue vehicles are reported as a single fleet.

Source Identification

AC Transit operates just under 629 revenue vehicles (buses); all are powered by diesel. The number of active revenue vehicles varies throughout the year. Appendix A includes the list of revenue vehicles in AC Transit’s Ellipse Register as of December 31, 2009, used as the basis for AC Transit’s audited FY2009 NTDB report.

Vehicles owned and operated by AC Transit that are not used for carrying passengers fall into the category of non-revenue vehicles. Almost all non-revenue vehicles run on gasoline. As of December 2009, AC Transit was operating 193 non-revenue vehicles (see Appendix A). Appendix A also includes a list of seventeen forklifts by facility, four of which run on propane and thirteen on electricity.

Data Collection and Management

Revenue vehicles are fueled at the five bus yard & maintenance facilities (D2, D3, D4, D6, and CMF). Diesel fuel usage is tracked at the facility level by an inventory management system.

The large majority of non-revenue vehicles use gasoline, but some use diesel. Non-revenue vehicles are also fueled at the five bus yard & maintenance facilities (D2, D3, D4, D6, and CMF). Fuel usage is tracked by the same inventory management system that tracks the revenue vehicles.


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All fuel consumption is tracked by AC Transit’s inventory management system (Ellipse). At each bus yard, daily (M-F) fuel measurements (volume, temperature, and water content) using a Veeder-Root metering system provide a “snapshot” of the fuel inventory in the morning and in the evening. The on-site Working Parts Supervisor at each fueling facility records these measurements directly into the Ellipse database system. The Working Parts Supervisor also records the quantities of fuel delivered each day (fuel drops). Most fuel drops and bus fueling occurs during the swing shift (after 5 pm). The daily fuel issued at each facility (amount pumped into vehicles) is calculated in Ellipse by subtracting the morning Veeder Root measurement from the previous evening Veeder Root measurement, and adding the total fuel drops. The end result is an accurate measurement of daily fuel issues, representing what is actually pumped into vehicles. AC Transit’s annual business inventory includes the fuel inventory system.

Time-based fuel issue reports for diesel and gasoline were generated from the Ellipse database using the CorVu application. A monthly summary of gasoline and diesel usage for each site (‘Monthly Fuel Usage.pdf’) was transcribed into the ‘2009 Fuel’ tab of the master inventory workbook (‘AC Transit CY2009 GHG Inventory.xls’). For the purpose of using estimating GHG emissions, an assumption is made that all fuel issued during the calendar year is combusted during the calendar year.

AC Transit has agreements with County Sheriff Departments that allows them to fuel from their bulk tanks at the D2, D3, D4, D6 and CMF facilities. AC Transit also has an agreement with UC Berkeley that allows them to fuel at D2 and D4. These vehicles are outside of AC Transit’s boundary and are excluded from the Inventory. Fuel estimates for these vehicles are provided in the ‘UC Berk and Sheriff Fleet’ tab of the master inventory workbook, based on annual mileage estimates. There are plans of imputing a card-lock system to accurately account for fuel used by both the Sheriff Department and UC Berkeley, but until then fuel estimates for these entities can only be based on mileage data provided by each entity.

Activity data for propane usage by the four forklifts is not maintained. The best estimate was derived from purchase information that is recorded through petty cash receipts and company credit card tracking. Each purchaser of propane provided individual estimates and these were totaled for the year. This information is provided in the ‘2009 Fuel’ tab of the master inventory workbook (‘AC Transit CY2009 GHG Inventory.xls’). Propane emissions were calculated using simplified estimation methods. A summary of all fuel usage by AC Transit for CY2006 to CY2009 is provided below in Table 5.

Table 5. AC Transit – Mobile Combustion Fuel Use Summary

Fuel Type

2006 Usage (gal)

2007 Usage (gal)

2008 Usage (gal)

2009 Usage (gal)

Diesel 6,349,443 6,527,960 6,689,426 6,606,946

Gasoline 133,127 150,068 172,032 156,927

Propane 3,200 1,392 1,111 869

GTL N/A 13,366 21,834 N/A


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Fuel Type

2006 Usage (gal)

2007 Usage (gal)

2008 Usage (gal)

2009 Usage (gal)

Biodiesel N/A 2,673 4,712 N/A

The above numbers represent fuel used by AC Transit Revenue and Non-Revenue fleet vehicles. Table 6 represents the portion of fuel subtracted for Sheriff, UC Berkeley and Stationary Back-up Generators by year to arrive at the total number of gallons presented in Table 5.

Table 6. AC Transit – Sheriff, UC Berkeley and Back-Up Generator Fuel

Use

Fuel Type/Source

2006 Subtractions

(Gal)

2007 Subtractions

(Gal)

2008 Subtractions

(Gal)

2009 Subtractions

(Gal) Sheriff - Gasoline 32,019 16,512 3,707 1,290

UC Berkeley - Diesel 29,707 33,065 30,830 29,212

UC Berkeley - Gasoline NA NA NA 17,838

Generators - Diesel 13,336 5,335 2,925 2,925

Quantification Method

CO2 emissions are calculated based on total annual fuel consumption, following the methodology of the TCR’s GRP Version 1.1. Activity data was transcribed from ‘Monthly Fuel Usage.pdf’ into the master inventory workbook (‘AC Transit CY2009 GHG Inventory.xls’), where CO2 emissions are calculated using emission factors from TCR’s GRP, Version 1.1, Table 12.1:

Diesel – 10.21 kg CO2/gallon

Gasoline – 8.78 kg CO2/gallon

Propane – 5.59 kg CO2/gallon

7.2 Indirect Emission from Imported Electricity

AC Transit imports electricity primarily from PG&E at the following facilities: D2, D3, D4, D6, CMF, Corp, TEC, RCT, ETC, RPTC, 66th Ave and 1400 Franklin Street.


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AC Transit also purchases electricity from MMA Renewable Ventures at D4 and D6. MMA and AC Transit are engaged in an agreement where MMA utilizes roof space at D4 and D6 for solar panel installations, and AC Transit purchases electricity from MMA at a pre-determined rate. The solar panels generate less electricity than is consumed at each facility. All electricity generated from the solar panels goes directly into the main grid in a net metering arrangement. AC Transit is billed for all electricity that the solar panels generate, but the purchase does not include the renewable energy aspects of the power. MMA retains ownership of the renewable energy certificates (RECs). Thus, the grid, not the solar panels, effectively supplies the electricity. The PG&E emission factor was used to estimate the emissions associated with this electricity use because they are the main utility provider for these facilities.

AC Transit does not receive utility bills for 1400 Franklin Street and does not track electricity used for this office space. Instead, AC Transit used square footage calculation methodologies to estimate annual electricity use.


The PG&E Account information was pulled from the online PG&E Business Tools account. The list of accounts was compared with last years and was reviewed by the representative for AC Transit to ensure all meters were accounted for. The list of accounts (and meter numbers) is included in Appendix B. Note that the electricity meter for 20650 Mack St. in Hayward is erroneously identified with the Training Center – it is actually associated with D6.

The MMA electricity usage was provided by AC Transit’s Accounts Payable department. Calendar Year usage by Facility is summarized in “Electricity_Data_CY2009”

Data Collection & Management

PG&E supplied time-based electronic reports from their billing database that include account number, meter number, billing address, meter read date, days in the billing cycle and the kWh used within the billing period. The electronic data was analyzed for completeness and organized by facility. The raw data as it was received from the utilities is stored in the “Client Data” directory. The raw data was copied into the ‘Electricity Data_CY2009.xls’ workbook, where it was organized by facility. Copies of the original paper invoices for utilities are stored in the Accounts Payable Department at the AC Transit Corporate Office in Oakland.

MMA provided a spreadsheet that accounts for electricity use by month and adjusts for metering issues associated with D6. The ‘Total Actual’ electricity column was transcribed into the ‘MMA Utility-Solar Panels’ worksheet.


Emissions were quantified using the methodology described by TCR’s GRP Version 1.1. All activity data was sorted by account and billing date. Since PG&E billing dates generally fall in the middle of the month, monthly totals were estimated using daily averages from two different billing cycles. Daily averages were calculated for each billing cycle, and then apportioned to each month’s total according to the number of billing


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days within the month. Monthly subtotals were summed to arrive at CY2009 electricity usage for each account. The PG&E emission factor was used to estimate the emissions associated with this electricity use because they are the main utility provider for these facilities.

CO2 emissions due to imported electricity are calculated in the master inventory workbook (‘AC Transit CY2009 GHG Inventory.xls’) using the following emission factor:

• 641.35 lbs CO2/MWh3

7.3 Direct Emissions from Stationary Combustion of Natural Gas (Furnaces and Water Heaters)

Direct stationary emissions from the combustion of natural gas where there are furnaces and hot water heaters at D2, D3, D4, D6, CMF, Corp, and TEC.


The PG&E Account information was pulled from the online PG&E Business Tools account. The list of accounts was compared with last years and was reviewed by the representative for AC Transit to ensure all meters were accounted for. The list of accounts (and meter numbers) is included in Appendix B. Note that the electricity meter for 20650 Mack St. in Hayward is erroneously identified with the Training Center – it is actually associated with D6.

Individual sources that combust natural gas have not been explicitly identified.

Data Collection & Management

PG&E supplied time-based electronic reports that include account number, meter number, billing address, meter read date, days in the billing cycle and the therms used within the billing period. The electronic data was analyzed for completeness and organized by facility. The raw data as it was received from the utilities is stored in the “Client Data” directory. The raw data was copied into the ‘Nat Gas Data 2009.xls’ workbook, where it was organized by facility. Copies of the original paper invoices for utilities are stored in the Accounts Payable Department at the AC Transit Corporate Office in Oakland.


Emissions were quantified using the methodology described by TCR’s GRP Version 1.1. All activity data was sorted by account and billing date. Since billing dates generally fall in the middle of the month, monthly totals were estimated using daily averages from two different billing cycles. Daily averages were calculated for each billing cycle, and then apportioned to each month’s total according to the number of billing days within the

32008 PG&E-specific emission factor, verified and published through the California Climate Action Registry.


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month. Monthly subtotals were summed to arrive at CY2009 therms usage for each account.

CO2 emissions are quantified in the ‘AC Transit CY2009 GHG Inventory.xls’ workbook using the natural gas emission factor 53.02 kg CO2/MMBtu.4

7.4 Direct Emissions from Stationary Equipment (Minor Sources)

Total direct emissions from minor stationary sources are estimated to account for less than 0.1% of total CO2 emissions, and they are reported using simplified estimation methods.


Stationary equipment that represents minor sources of GHG emissions includes:

Standby generators that use diesel.

Welding and cutting torches that use acetylene gas.

Welding and machining torches that use an argon 75 percent / CO2 25 percent gas blend

Appendix C provides a list of standby generators and their fuel use estimates. This list is based on a list of generators compiled by AC Transit in March 2002 (generator info.pdf) for the purpose of securing air permits from the BAAQMD. Updated information about additional generators at D2 and the Corporate Offices was obtained from the AC Transit Environmental Engineer (Sue Chaewsky).

Individual pieces of welding and machining equipment are not explicitly identified.

Emissions from minor sources were estimated using the best information available. Calculations for these minor stationary sources were performed in the master inventory workbook (‘AC Transit_CY2009 GHG Inventory.xls’):

Data Collection & Quantification Method for Standby Generators

AC Transit has diesel-powered standby generators at D2 (two), D3 (one), D4 (one), D6 (two), CMF (one), and the Central corporate office (three). There is no management system in place to track actual fuel usage, so fuel usage is based on an upper bound estimate for annual operating hours. For air permitting purposes, the upper bound is 100 hours per year. However, the AC Transit Environmental Engineer estimates that 20 hours per year is an adequate upper bound. Generators are fueled from the same fuel tank that supplies the fleet vehicles. Thus, the estimated fuel usage for standby generators is subtracted from the overall fuel usage to represent net mobile source emissions.

CO2 emissions from emergency generators were estimated using the following emission factor:

4 GRP Version 1.1 Table 12.1


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• Diesel: – 10.21 kg CO2/gallon5

Data Collection & Quantification Method for Compressed Gases

Estimates of acetylene and CO2 gas use were based email correspondence with the gas suppliers. Scans of the email correspondence are saved as ‘Comp Gas Information.pdf’. The data was transcribed into the “compressed gases” tab of master inventory workbook (‘AC Transit_CY2009 GHG Inventory.xls’), where emissions calculations are performed.

CO2 emissions from stationary sources using compressed gas were estimated using the following emission factors:

Acetylene: 0.1043 gCO2/ MMBtu6

75 Argon / 25 CO2 gas: 25% of volume = CO2

8. INVENTORY MANAGEMENT

Quality Assurance / Quality Control

Cameron-Cole (Technical Assistance Provider) relied on information and activity data provided by AC Transit to calculate GHG emissions. Cameron-Cole performed quality control/quality assurance on the data collection/aggregation phase and the emissions calculations. The QA/QC process involved a risk-based analysis to identify areas of largest potential material misstatement (i.e. largest emitting sources, or largest uncertainty in the data) and then closer scrutiny of those areas with respect to data collection methodology and emissions calculations.

Inventory Archives

Per the GRP, AC Transit “should maintain any relevant records from which emissions results have been calculated. Such records may include, but not be limited to, utility bills, fuel consumption records, emissions data, process data and schedules, and past reports. Although it is not possible to predict what any future regulatory regime may require regarding record keeping and retention, it is inadvisable for you to dispose of relevant records immediately after filing emissions reports. This would hinder any future verification or review activities, placing you at a disadvantage in case of some need to re-estimate the emissions results. In addition, your baseline inventory data is the key to determining temporal trends in GHG emissions.”

The CY2009 GHG Inventory is summarized in the master inventory workbook ‘AC Transit CY2009 GHG Inventory.xls’. The list of supporting files is provided below:

“Fuel Data” directory: • Monthly Fuel Usage.pdf

5 GRP Version 1.1 Table 12.1 6 GRP Version 1.1 Table 12.1


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• Berk Buses File • Sheriff File

“Utility Data” directory: • AC-Transit Usage Dec08-April29-2010.pdf • AC-Transit Usage Dec08-April29-2010.xls • MMA Invoices.pdf “Compressed Gas” directory: • Comp Gas Information.pdf • Propane Invoices.pdf • Propane Estimates.pdf “Calculation Tables” directory: • Electricity Data_ CY2009.xls • Nat Gas Data_ CY2009.xls

Sue Chaewsky, District Environmental Engineer, maintains GHG inventory data. The electronic files supporting the CY2009 GHG Inventory are included in Appendix D as a CD-ROM disk, and copies of the files are stored at Sue Chaewsky’s office in Oakland. Appendix D also includes a summary of the CY2009 GHG Inventory and a pie chart of the total emissions broken down by category (printed from ‘AC Transit CY2009 GHG Inventory.xls’).


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Appendix A

Mobile Source Lists

PlantNo Description Year Diesel

9001 CAR: FORD, CROWN VIC, 2005 BLACK (9001) 2005 NO

9002 CAR: FORD, CROWN VIC, 2005 SILVER (9002) 2005 NO

9003 CAR: FORD, CROWN VIC, 2005 WHITE (9003) 2005 NO



90011 VAN: GMC SAFARI,2001 2001 NO




90015 TRUCK: GMC, STORES (2001) 2001 YES

90016 CAR: FORD TAURUS,2001 2001 NO


90018 CAR: FORD, CROWN VIC, 2001 2001 NO











90033 TRUCK: SERVICE,2001 2001 YES



90036 TRUCK: SERVICE, 2001 2001 YES

90038 VAN:MINI CARGO,2002 GMC SA 2002 NO

90039 VAN:MINI CARGO,2002 GMC SA 2002 NO

90050 CAR: 2000, FORD, CROWN VIC 2000 NO













92000 JEEP: CHEROKE, (WHT/AGATE) 2000 NO

92001 VAN:DODGE B3500(WHT/AGATE) 2000 NO

Non-Revenue Vehicles in Service as of December 2009

1 of 4



92004 VAN:Ford E150 2004 2004 NO

92005 VAN: CHEVY ASTRO (WHITE) 2 2000 NO



92008 VAN: CHEVY ASTRO, (2000) 2000 NO


92050 FORD: TAURUS (WHT/GRAY) 20 2000 NO



92100 TRUCK: DODGE BR2500 (WHT) 2001 NO

92101 TRUCK: DODGE BR2500 (WHT) 2001 NO

92451 TUG: TRACTOR, DIESEL 1985 YES

95001 TRUCK: CAB CHASSIS 3/4T BR2500 2005 NO

95002 TRUCK: 2006 CHEV. PICKUP, PLANT #95002 2006 NO

95003 TRUCK: 2006 CHEV. PICKUP, PLANT # 95003 2006 NO


95005 TRUCK: 2006 CHEV. PICKUP, PLANT # 95005 2006 NO



95008 TRUCK: GMC, STORES, (2006) 2006 YES

95009 TRUCK: GMC, STORES, (2006) 2006 YES

95069 TRUCK: 1980, FLATBED 2 TON 1980 YES

96011 CAR: FORD, SEDAN 500 (#96011) 2006 NO

96012 CAR: FORD, SEDAN 500(#96012) 2006 NO

96013 CAR: FORD, SEDAN 500 (#96013) 2006 NO

96014 CAR: FORD, SEDAN 500 (#96014) 2006 NO

96015 CAR: FORD, SEDAN 500 (#96015) 2006 NO

96016 TRUCK: RAM QUAD CAB 2006 SILVER 2006 NO

96017 VAN: FORD, CARGO E150 (2004) 2006 NO

97001 CAR: FORD, SEDAN 500 (# 97001) 2007 NO

97002 SUV: DODGE, DURAGO ( # 97002) 2007 NO

97003 SUV: DURANGO, DODGE ( # 97003) 2007 NO

97004 SUV: DODGE DURANGO ( # 97004) 2007 NO

97005 SUV: DODGE, DURANGO (# 97005) 2007 NO

97006 SUV: DODGE DURANGO (# 97006) 2007 NO

97007 TRUCK: DODGE RAM (# 97007) 2007 NO


97009 TRUCK: DODGE RAM (97009) 2007 NO


97011 HONDA CIVIC HYBRID 2007 2007 NO

97012 TOYOTA CAMRY HYBRID 2007 NO

98001 CAR: 2008 DODGE AVENGER 2008 NO



2 of 4





98006 SUV: DODGE DURANGO 2008 NO





98011 VAN: DODGE CARAVAN 2008 NO

98013 TRUCK:GMC C6500 2009 NO

98631 TRUCK: 1986 (CFWAREHOUSE) 1986 YES

98800 VAN: 1988 CHEVROLET, 1 TON 1988 NO

98925 TRUCK: 1989 CHEV., 3/4 P/U 1989 NO

98926 TRUCK: 1989 CHEV., 3/4 P/U 1989 NO

98951 CAR: 1989 CHEV. CELEBRITY 1989 NO










99120 TRUCK: 1991 GMC 3/4 TON 1991 NO

99132 VAN: 1991 DODGE, MINI 1991 NO

99134 VAN: 1991 GMC 1991 NO

99135 VAN: 1991 GMC 1991 NO

99250 CAR: 1992 CHEV. LUMINA 1992 NO





99320 TRUCK: 1993 FORD 3/4TON PU 1993 NO

99322 TRUCK: 1993 FORD 3/4TON PU 1993 NO

99350 CAR: 1993 FORD TAURUS 1993 NO






99400 VAN: 1994 (DRUG TESTING V)And ROOF AIR 1994 NO

99420 TRUCK: 1994 FORD, MINI P/U 1994 NO



3 of 4






99500 VAN: 1995, GMC 3500 1995 NO

99501 VAN: 1995, GMC 3500 1995 NO

99504 VAN: 1995, GMC SAFARI 1995 NO

99505 VAN: 1995, GMC 3500 1995 NO

99520 TRUCK: 1995 MINI PICK UP 1995 NO

99521 TRUCK: 1995 GMC 3/4 TON 1995 NO

99522 TRUCK: 1995 GMC 3/4 TON 1995 NO

99523 TRUCK: 1995 GMC 3/4 TON 1995 NO

99524 TRUCK: 1995 GMC 3/4 TON 1995 NO

99525 TRUCK: 1995 GMC 3/4 TON 1995 NO

99526 TRUCK: 1995 GMC 3/4 TON 1995 NO


99553 CAR: 1995 OLDSMOBILE CIERA 1995 NO

99555 CAR: 1995 OLDSMOBILE CIERA 1995 NO

99577 VACUUM: 1995, PIT CLEANER 1995 NO

99700 VAN: 1997 FORD AEROSTAR 1997 NO


99800 VAN: FORD, CARGO E150 1998 1998 NO

99801 VAN: FORD, E-150 1998 1998 NO

99820 TRUCK: GMC, MINI PICKUP 1998 NO

99821 TRUCK: FORD, PICK-UP 1998 2500 1998 NO

99850 CAR: 1998, FORD CROWN VIC. 1998 NO


99924 TRUCK: UTILITY 3500 CAB 1998 NO

99931 TRUCK: 1999 (CFWAREHOUSE) 1999 NO

















4 of 4

Total

Division 6

CMF

1 Electric Forklift 1 Propane Forklift

Division 2

Division 3

Division 4

AC Transit Forklifts - 2009




9 Electric Forklifts

13 Electric Forklifts 4 Propane Forklifts

1

Coach# Manufact InServAsOf FTAStatus MaintStatus StoresStatus

150 Flxible 12/31/2009 Active Available Active






160 Gillig 12/31/2009 Active Available Active






1001 Van Hool 12/31/2009 Active Available Active
































Revenue Vehicles in service as of December 2009

1 of 15






























1062 Van Hool 12/31/2009 Active Training Active

















2 of 15





























1901 New Flyer 12/31/2009 Active Available Active


















3 of 15






1922 New Flyer 12/31/2009 Active Training Active









































4 of 15















































5 of 15















































6 of 15









2758 Gillig 12/31/2009 Active Sold Retired








2903 NABI 12/31/2009 Active Available Active






























7 of 15















































8 of 15


















3101 NABI 12/31/2009 Active Training Active





























9 of 15








































4001 NABI 12/31/2009 Active Training Active







10 of 15















































11 of 15















































12 of 15



















6001 MCI 12/31/2009 Active Available Active




























13 of 15















































14 of 15
















15 of 15


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Appendix B

AC Transit Utility Accounts

(electricity and natural gas)

Facility Service Address SA ID Activity Description Account ID Meter NumberCMF 10626 International Blvd, Oakland, CA 3442530544 Assembly Plant 3442530252 01183R

CMF 10626 International Blvd, Oakland, CA 8400858005 OFC/Storage 8400858053 04891R

Corp 1600 Franklin St #A, Oakland, CA 2770668005 OFC 2770668845 1471R5

Corp 1600 Franklin St #B, Oakland, CA 0366362001 HSE MTR 0366362821 P96237

D2 1177 47th St, Emeryville, CA 3571016315 AC Transit Building 3571016019 P95947

D3 213 21st St, Richmond, CA 9268920065 STN 9268920848 X45873

D4 900 Seminary Ave, Oakland, CA 9310937797 Maint Yard 9310937056 P29212

D6 1758 Sabre St, Hayward, CA 1589631475 Tou Cntl A11 1589631366 3554R6

Train 20234 Mack St, Hayward, CA 3006098005 Trng Cntr Tou Cntl A1 3006098729 1519R7

Train 20650 Mack St, Hayward, CA 0297942836 Maintenance Bldg 0279942879 P95896

RCT Radio Rd KBRG Bldg, Site D San Bruno MT, Daly City, CA 8039986005 Transmitter Site D 8039986988 1E6994

ETC 7235 Foothill Blvd #B, Oakland, CA 0142184005 Eastmont Transit Ctr 0142184281 18M757

RPTC Corner of Blume Dr and Richmond Pkwy, Richmond, CA 1453870314 RPTC 1453870276 4P1525

66th Ave 905 66th Ave 1827307058 905 66th Ave 1753296869



Facility Service Address SA ID Activity Description Account ID Meter NumberCMF 10626 International Blvd, Oakland, CA 8359191005 Assembly Plant 8359191389 49481091

Corp 1600 Franklin St, Oakland, CA 6551749005 OFC 6551749637 30465556

D2 N/S 45th St W/O San Pablo, Emeryville, CA 8049960005 AC Transit Building 8049960240 33330572

D3 213 21st St, Richmond, CA 1716635005 STN 1716635656 35622356

D4 Seminary and San Leandro Blvd, Oakland, CA 9352603005 Bldg 9352603720 47863805

D4-hydro 1040 Seminary Ave, Oakland, CA 2141407382 Hydrogen Generation 2141407150 5458760X

D6 1758 Sabre St, Hayward, CA 8798008005 Municipal Agency 8798008044 45581998

TrainMaint 20650 Mack St, Hayward, CA 0339609005 Maintenance Building 0339609543 27628964

Train 20234 Mack St, Hayward, CA 0256276005 Training Center 0256276215

Electricity Meters

Natural Gas Meters


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Appendix C

Standby Emergency Generator list

Facility Fuel

Source

Location: Type: Make: Model: Year

D2 Emeryville Standby engine Detroit Diesel

Corp.

8163-7405 1985

D2 Emeryville Standby engine

D3 Same as

buses

Richmond Standby engine Caterpillar 3412T 1988

D4 Same as

buses

Oakland:

Seminary Ave

Standby engine Detroit Diesel

Corp.

8083-7305 1986

D6 Hayward Standby engine Detroit Diesel

Corp.

8083-7305 1985

D6 Hayward Standby engine

portable

Detroit Diesel

Corp.

8083-7305 1985

CMF Oakland:

International Blvd.


Corp.

8083-7305 1984

Corp Same as

buses

Oakland: Franklin

St.


Corp.

8123-7305 1986

Corp Same as

buses

Oakland: Franklin

St.

Standby fire pump

engines

Corp Same as

buses

Oakland: Franklin

St.

Standby fire pump

engines

Appendix C: AC Transit Generators


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Appendix D

CY2009 GHG Inventory Summary

and Electronic Files (CD-ROM)


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Appendix E

CRIS Report

AC Transit Greenhouse Gas Transit IMP_CY2009.pdf66th Ave 905 66th Ave 66th Ave 1400 Franklin Street...

Documents

Transcript of AC Transit Greenhouse Gas Transit IMP_CY2009.pdf66th Ave 905 66th Ave 66th Ave 1400 Franklin Street...