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Table 4 <br /> Extraction and Emission Rates <br /> ARCO Service Station No. 2130 <br /> 7906 North El Dorado Street, Stockton, California <br /> Extraction Rate from Emissions Rate to Destruction Removal Cummulattve TPHG <br /> Date Wells I lb/da Atmosphere lb/da Efficient ,% Removal lb <br /> TPHG Benzene TPHG Benzene TPHG Benzene Period Total <br /> 7/17/95 15 18 228 287 2 87 8111 8741 15185 15185 <br /> 8/29/95 3881 742 295 3 29 9239 9557 58039 73224 <br /> 9/22/95 3881 5 15 557 548 8565 8934 46572 119796 <br /> 1/24/96 1508 206 411 343 0 97 0 83 12067 1 1688767 <br /> 2/21/96 7801 044 5 12 0 012 093 097 219433 19072 <br /> 3/13/96 NC NC NC NC NC NC NC 19072 <br /> NC=Not calculated <br /> DRE shall be at least 95% <br /> Daily TPHG emissions shall not exceed 48 0 lb <br /> Daily benzene enussions shall not exceed 0 02 lb <br /> MSwriple Calculations <br /> from wells=23 W/min x 170 mg/m'x 0 028 m3O x 1 lb/454 000 mg x 1,440 mus/day=0 35 Ib/day <br /> (Ib/day) <br /> Dest Removal = 0.35-0.0118 x 100=96 6% <br /> (Efficiency-%) 035 <br /> Cum Extraction = 0.13+0.35 lb/day x 15 days = 3 6 lb <br /> (Period-Ib) 2 <br /> Cum Extraction = 124+3 56 = 4 80 lb <br /> ('notal- lb) <br /> N\xls\0805\ll40"61796M1 xis Rev 0 6/17/96 <br />