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1 b7 <br /> Table 4 <br /> Extraction and Emission Rates <br /> ARCO Service Station No 2130 <br /> 7906 North E! Dorado Street, Stockton, California <br /> Extraction Rate from Emissions Rate to Destruction Removal Cummulative TPHG <br /> Date Wells(lb/da ) Atmosphere(lb/da ) Efficiency,% Removal(lb) <br /> TPHG Benzene TPHG Benzene TPHG Benzene Period Total <br /> 7117195 15 18 228 287 2 87 81 87 152 152 <br /> 8129195 38 81 742 295 329 92 96 580 732 <br /> 9/22195 3881 5 15 557 548 86 89 466 1 198 <br /> 1124196 1508 206 4 1 1 343 97 83 121 16888 <br /> 2121196 7801 044 5 12 0 012 93 97 2184 19072 <br /> 3/13196 NC NC NC NC NC NC NC 19072 <br /> 6/18/96 1056 002 0 19 0 003 98 85 866 19938 <br /> 8126196 11 86 001 0 13 1 0 002 99 80 1 150 21088 <br /> 1214196 1 17 78 009 1 23 0 002 93 97 1 183 22271 <br /> C=Not calculated <br /> Mass of TPHG removed and Cumulative mass removed calculation are based on analytical <br /> results and average flow rate for the quarter <br /> . DRE shall k at least 95% <br /> ' Daik TPHG emissions shall not exceed 48 0 Ib <br /> Dadv beovene emissions shall not exceed 0 02 lb <br /> Sample Calculations <br /> Fxt rate from%sUls=23 ft`/mm x 170 mg/m'x 0 028 m/it'x 1 lb/454 000 mg x 1 410 miniday=0 35 lb/dav <br /> lbidaN) <br /> Ihst Removal = 0.35-0.0118 x 100=96 6% <br /> (Eflici�-mv-%) 035 <br /> Cum Luraction = 0,13+0.35 lb/day x 15 days = 3 6 lb <br /> (Period-lb) 2 <br /> Cum Extraction = 1 24+3 56 = 4 80 Ib <br /> (Total Ib) <br /> N1xIs108051114061061796MI xis Rev 0 1123197 <br />