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Air Emissions Analysis East Stockton Recycling Facility A.Operational Traffic Data Baseline Proposed Description Max Hourly I Annual Max Hourly Annual Trucks' 3.6 16,250 28 92,447 On Facility Distance(mi)Z 0.6 2,074 9.1 30,224 Off Facility Distance(M i)3 2.2 9,750.0 16.8 55,468.2 Idle(hours)4 0.3 912.5 4.2 13,840 Reference for Tables:information about Truck Use for East Stockton Recycling Facility SJVAPCD CEQA Ref# 20100208,Pacific Waste Consulting Group,January 11,2011. 'Hourly:Baseline-difference of daily trucks from Table 4 and Table 5 divided by 12 hours/day of truck traffic; Proposed-max hour(2 pm)from Table 6.Annual:Baseline-Weber trucks in Table 1;Proposed-Annual total from Ta 4. 2 Annual:l:B Baseline-Table 9,Current Weber;Proposed-Table 9,Future Weber.Hourly:Baseline and Proposed- Ratio of max hour to total daily trucks(28/254)applied to annual miles divided by 365. 3 Distance from driveway to freeway onramps assumed to be 0.3 miles;Trucks multiplied by 0.3 miles and doubled(trip to/from site). °Proposed:Hourly-from Table 7b applying ratio of max hour to total daily trucks(Table 6);Annual-From Table 7c.Baseline-values not available;estimated based on Proposed idle hours and ratio from on-facility mileage. B.Heavy-Heavy Duty(HHD)Truck Emission Factors'' Diesel PMta Diesel PMia, Location Baseline 70- r Av 3 Running Emissions(g/mi) On Facility(5 mph) 2.276 0.2276 Off Facility(15 mph) 1.009 0.1009 Idling Emissions(Ib/min-vehicle) On Facility(idling) 4.76E-05 4.76E-06 3 From EMFAC2007 Heavy Duty Truck,70 degrees F 2 For Heavy Heavy DutyTruck(HHDT)Idling emissions:EMFAC model was run in Burden Mode,using 1,000,000 HHDT(diesel)vehicles idling at 100 minutes each(min/vehicle-day).This value was then converted to lbs/min-truck. For example,the EMFAC idling emission value for 1 MMHHDT vehicles,idling 100 minutes for PM,a was 2.38 tons/day.Thus,2.38 tons/1 MM trucks/100 min per truck x 2,000 lbs/ton=4.8E-05 lbs/min- truck. 3 On-road truck regulations require a 70%reduction in PM emissions over the next ten years,so conservatively assume 90%reduction from baseline levels over the next 70 years. C.Operational HHD Truck Exhaust Emissions Baseline Proposed Max Hourly Annual Max Hourly Annual Description (Ib/hr) (Ib/yr) (Ib/hr) (Ib/yr) On Facility 0.003 10.407 0.005 15.165 Off Facility 0.005 21.688 0.004 12.338 Idle 0.001 2.606 0.001 3.953 ' Modeled Operational HHD Truck Exhaust Emissions(g/sec) Baseline Proposed ' Description Max Hourly Annual Max Hourly Annual On Facility' 3.793E-04 1.497E-04 5.753E-04 2.181E-04 Off Facility 6.166E-04 3.120E-04 4.709E-04 1.775E-04 Idle 1.080E-04 3.749E-05 1.511E-04 5.685E-05 ,On-facility emissions distributed along truck path,except idle emissions(see next table). D.Modeled Idle Emission Locations Percentage of Activity Time(hr/day) Emissions Clueing 3.25 Prior to Scale 1.625 Prior to Unloading 1.625 Scale In 3.49 22.6% Scale Out 3.49 Unloading 27.8 77.4% Total 38.03 100% 1 From Table 7b Traffic Page 1 of 3 10/10/2011