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B3b. Exhaust Emissions (Hauling Trucks)
<br />Emissions of carbon dioxide from solid waste transportation are calculated using the following equation:
<br />-1-1-1-1
<br />Y = (P)*(d)*(Ca)*(M)*(E)*(C)*(C)
<br />AA12
<br />Y = annual emissions of carbon dioxide from solid waste transportation, tons/yr.
<br />A
<br />P = annual waste production for disposal treatment, tons/yr (see B3a. Fugitive Emissions).
<br />A
<br />d = solid waste density, 0.0365 tons/cuyd (California Integrated Waste Management Board).
<br />Ca = truck load capacity, 20 cuyd/trip.
<br />M = average trip mileage, 31.83 miles/trip.
<br />E = emission factor for hauling trucks, 1,637.871 gr/mile (EMFAC 2007 output file).
<br />C = conversion factor from gr to lbs, 453.59 gr/lbs.
<br />1
<br />C = conversion factor from lbs to tons, 2,000 lbs/ton.
<br />2
<br />d, tons/cuydCa, cuyd/tripM, miles/trip *E, gr/mile **
<br />Unit TypeP, tons/yrC, gr/lbsC, lbs/tonsY, tons/yr
<br />A12A
<br />Residential3,545.25
<br />0.0365202.301,637.871453.592,00020.17
<br />0.00
<br />Food Store0.0365202.301,637.871453.592,0000
<br />Restaurant0.000.0365202.301,637.871453.592,0000
<br />Hospitals0.00
<br />0.0365202.301,637.871453.592,0000
<br />154.8
<br />Retail00.0365202.301,637.871453.592,0000.88
<br />Commercial0.000.0365202.301,637.871453.592,0000
<br />College/University0.00
<br />0.0365202.301,637.871453.592,0000
<br />0.00
<br />High school0.0365202.301,637.871453.592,0000
<br />0.0365202.301,637.871453.592,0000
<br />Elementary School0.00
<br />Office0.000.0365202.301,637.871453.592,0000
<br />Hotel/Motel0.000.0365202.301,637.871453.592,0000
<br />Warehouse0.0365202.301,637.871453.592,0000
<br />0.00
<br />Miscellaneous0.000.0365202.301,637.871453.592,0000
<br />Total, tons/yr21.05
<br />* M = average trip mileage based on the average round trip distance from the Landfill with jurisdiction over the site: California Integrated Waste Management Board (http://www.ciwmb.ca.g
<br />
<br />** E = emission factor for hauling trucks based on the following EMFAC criteria: 2008 calendar year, all heavy-duty trucks, temperature of 43°F,
<br />relative humidity of 74% (average between 63% and 84%, January AM and PM), and speed of 45 miles/hr.
<br />B3c. Exhaust Emissions (Disposal Equipment)
<br />Emissions of carbon dioxide from solid waste disposal are calculated using the following equation:
<br />-1
<br />Y = (E)*(h)*(n)*(C)
<br />A
<br />Y = annual emissions of carbon dioxide from solid waste disposal, tons/yr.
<br />A
<br />E = emission factor for disposal equipment, lbs/hr (SCAQMD Off-Road Mobile Source Emission Factors, 2007).
<br />h = operating hours per day, 2 hrs/day.
<br />n = days per year, 365 days/yr.
<br />C = conversion factor from lbs to tons, 2,000 lbs/ton.
<br />E, lbs/hr *h, hrs/day **n, days/yrC, lbs/tons
<br />Vehicle TypeY, tons/yr
<br />A
<br />Excavator119.6023652,0000.00
<br />Grader132.7023652,0000.00
<br />Off-Highway Tractor151.5023652,0000.00
<br />Off-Highway Truck260.1023652,0000.00
<br />Total, tons/yr0.00
<br />* E = emission factor for disposal equipment based on the composite emission factor for each vehicle type.
<br />** h = operating hours per day (and vehicle fleet) are based on typical operating time (and vehicle fleet) necessary to dispose 5.11 tons of solid
<br />waste per day.
<br />Page 3 of 13
<br />B4. Wastewater
<br />Emissions of carbon dioxide from waste water treatment are calculated using the following equation:
<br />Y = (Y)*(R)
<br />A2A1W
<br />Y = annual emissions of carbon dioxide from waste water treatment, tons/yr.
<br />A2
<br />Y = annual emissions of carbon dioxide from electricity used for potable water treatment and transportation, tons/yr.
<br />A1
<br />R = ratio between potable water usage and waste water production, 0.50 (USEPA, 1992).
<br />W
<br />Y, tons/yrR *Y, tons/yr
<br />A1WA2
<br />4.58E+000.502.29
<br />* R = ratio between water usage and waste water production based on the ratio between indoor water usage and total water usage per
<br />W
<br />household under the assumption that emissions from potable water treatment and transportation for domestic use are equal to emissions from
<br />waste water transportation and treatment.
<br />C. Summary Table
<br />Emissions,
<br />Source Typetons/yr
<br />DirectMobile and stationary93561.22
<br />Total direct, tons/yr93561.22
<br />Electricity10273.82
<br />Potable water4.58
<br />Indirect
<br />Solid waste37.70
<br />Wastewater2.29
<br />Total indirect, tons/yr10,318.40
<br />Total, tons/yr103,879.62
<br />Global warming potential index1
<br />Global warming potential, tons/yr103,879.62
<br />Page 4 of 13
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