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Table 5 <br /> Extraction and Emission Rates <br /> Former ARCO Service Station No 2168 <br /> 447 West Charter Way, Stockton, California <br /> Extraction Rate Emissions Rale Destruction Cummulative TPHG Cummulattve Benzene <br /> Date lb/da lb/da Efficiency, % Removal lbs Removal lbs <br /> TPHG .Benzene TPHG Benzene TPHG Benzene Period Total Period Total <br /> 1/24/97 118 54 2 1 039 00003 997% 9998% 267 267 19 19 <br /> 2/20/97 61 60 1 6 0 13 0 002 998% 999% 1237 1504 33 52 <br /> 3/20/97 3143 0 4 004 0 001 999% 998% 378 1882 5 57 <br /> 4/16/97 3457 02 006 0 001 998% 992% 931 2813 4 61 <br /> 9/9/97 5190 01 0 76 0 153 985% NC 4702 7514 9 70 <br /> 10/28/97 2326 0 1 060 0 008 974% 932% 831 8345 4 7451 <br /> 11/24/97 1661 1 0 03 023 0 004 98 6% 878% 201 8546 0 7487 <br /> 12/19/97 2236 0 03 0 73 0 004 967% 882% 150 8695 1 020 7507 <br /> 1/20/98 1936 004 043 0 004 978% 900% 289 8985 1 75 59 <br /> 2/18/98 3535 000 027 0 001 993% 560% 38 9023 0 7559, <br /> 3/12/98 008 1 000 004 0 000 474% NA 1 9024 000 75 60 <br /> C=Not calculated due to high reporting limit on the effluent NA=not applicable influent and effluent concentrations are<detection lrmjts <br /> ass of TPHG removed and Cumulative mass removed calculation are based on analytical <br /> esuits and average flow rate for the quarter <br /> r Permit I.rmrts <br /> ISampSRE shall be at[east 95% For 3/20/98 DRE is low due to influent TPHG concetration being low(19 mglm)and effluent TPHG <br /> oncentration being nondetectable(c high laboratory detection limit of 10 mg/m) <br /> le <br /> aily TPHG emissions shall not exceed 48 0 lb <br /> aily benzene emissions shall not exceed 0 02 lb <br /> Calculations for 1120198 <br /> Ext rate=50 ft3/min x 4900mg/m3 x 0 028 m3/fl'x 1[b/454000 mg x 1440 min/day=22 lb/day <br /> Dest Removal = 22 0 49 x 100=97 8% <br /> (Efficiency-9a) 22 <br /> m Extraction = 22 lb/day x 15 days(uptime) = 3301b <br /> Period-lb) <br /> [in Extraction = 330+8696=9026[bs <br /> oral-lb) <br /> 2I680MRV XLSITable 6 6/17/98 <br />