others, specifically in the area of land-use and transit co-benefits that could replace the default values used throughout the Quantifier. The results of the Quantifier should be considered conservative with the highest value of providing an annual comparison of air quality benefits for the purposes of continual improvement. II. Data Needs Source 1: Type of Fleet (i.e. Bus, Locomotive, Light Rail, Van, etc.) Source 2: Vehicle Group (e.g. No. of Buses in a Manuf. Year) Source 3: Fuel Volume gallons/year for a model year) Source 4: Vehicle miles travelled for fleet count (Total miles/year for a model year): On Highway Only Source 5: Vehicle Revenue Miles (VRM) from NTD Source 6: Passenger Miles Travelled (PMT) from NTD Source 7: Seat capacity of each vehicle type in a model year III. Screen-Specific Instructions The tab provides users with the primary data field inputs for each mode of transportation that “NTD” they may offer: Commuter Rail (CR) Diesel and Electric – Rail (HR) Electric – Light Rail (LR) Electric – Streetcar (SR) Electric – Trolley Bus (TB) - Electric Bus (MB) Compressed Natural Gas (CNG), Diesel and Electric – Bus Rapid Transit (RB) Diesel and Electric –CNG, Commuter Bus (CB) CNG and Diesel – Vanpool (VP) CNG, Diesel and Gasoline – All YELLOW fields are open for user input or adjustment. All fields are static; containing USEPA established emissions rates or calculations. The table on the NTD worksheet should be populated with available data for Energy/Fuel, Unlinked Trips, Vehicle-Miles, and Passenger-Miles from NTD. Seat-Miles can be determined, using APTA’s Standards Sustainability Metrics for Criteria Air Pollutants: Calculation Methods. The second table on the NTD worksheet should be populated with data from USEPA’s eGRID data for electricity generation and USEPA’s Air Emission Sources Where You Live. Recommended data from USEPA’s MS Excel eGRID data field State annual net generation “ST09 – (MWh)” and State annual CO2 equivalent emissions (tons)”. The annual NOX “ST09 – “State
others, specifically in the area of land-use and transit co-benefits that could replace the default values used throughout the Quantifier. The results of the Quantifier should be considered conservative with the highest value of providing an annual comparison of air quality benefits for the purposes of continual improvement. II. Data Needs Source 1: Type of Fleet (i.e. Bus, Locomotive, Light Rail, Van, etc.) Source 2: Vehicle Group (e.g. No. of Buses in a Manuf. Year) Source 3: Fuel Volume gallons/year for a model year) Source 4: Vehicle miles travelled for fleet count (Total miles/year for a model year): On Highway Only Source 5: Vehicle Revenue Miles (VRM) from NTD Source 6: Passenger Miles Travelled (PMT) from NTD Source 7: Seat capacity of each vehicle type in a model year III. Screen-Specific Instructions The “NTD” tab provides users with the primary data field inputs for each mode of transportation that they may offer: Commuter Rail (CR) – Diesel and Electric Rail (HR) – Electric Light Rail (LR) – Electric Streetcar (SR) – Electric Trolley Bus (TB) - Electric Bus (MB) – Compressed Natural Gas (CNG), Diesel and Electric Bus Rapid Transit (RB) –CNG, Diesel and Electric Commuter Bus (CB) – CNG and Diesel Vanpool (VP) – CNG, Diesel and Gasoline All YELLOW fields are open for user input or adjustment. All fields are static; containing USEPA established emissions rates or calculations. The table on the NTD worksheet should be populated with available data for Energy/Fuel, Unlinked Trips, Vehicle-Miles, and Passenger-Miles from NTD. Seat-Miles can be determined, using APTA’s Standards Sustainability Metrics for Criteria Air Pollutants: Calculation Methods. The second table on the NTD worksheet should be populated with data from USEPA’s eGRID data for electricity generation and USEPA’s Air Emission Sources Where You Live. Recommended data from USEPA’s MS Excel eGRID data field “ST09 – State annual net generation (MWh)” and “ST09 – State annual CO2 equivalent emissions (tons)”. The “State annual NOX
APTA%20Transit%20Emissions%20Quantifier%20Tool%20User's%20Guide.docx