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' TABLE 7 • SOIL VAPOR EXTRACTION SYSTEM EMISSION DATA ' Former Chevron Service Station 9 5775 301 West Kettleman Lane Lodi, Caltfornia TPH as Gasoline Benzene Effluent Effluent Hour Meter Blower Average Concen EmissionDestructlonConcen- Emission Destruction Sample Date Reading Vacuum Flow Rate tration Rate Efficiency tratlon Rate Efficiency ID Sampled (hours) Notes ("H2O) (scfm) (ppmv) (lbs/day) (percent) (ppmv) (lbs/day) (percent) EFFL 04/03/02 14,788 40 - 00 1000% 0 000 1000% EFFL 04/09/02 14,930 40 10311 01 1000% - 0 001 1000% EFFL 04/19/02 15,168 40 10311 01 1000% 0 001 1000% EFFL 04/23/02 15,263 40 9820 01 1000% - 0 001 1000% EFFL 04/30/02 15,431 40 9820 <5 0 01 1000% <0 050 0 001 1000% EFFL 05/07/02 15,559 40 9820 -- 01 1000% -- 0 001 1000% EFFL 05/14/02 15,766 40 10311 01 1000% 0 001 1000% EFFL 05/21/02 15,934 40 9820 01 1000% -- 0 001 1000% EFFL 05/29/02 16,127 40 10311 <5 0 01 1000% <0 050 0 001 1000% ' EFFL 06/04/02 16,271 40 10802 -- 01 1000% - 0 001 1000% EFFL 06/11/02 16,439 40 10321 0 1 1000% 0 001 1000% EFFL 06/18/02 16,609 40 10802 0 1 1000% -- 0 001 1000% EFFL 06/25/02 16,775 40 10802 <5 0 01 1000% <0 050 0 001 1000% ' EFFL 07/02/02 16,943 40 10802 -- 01 1000% -- 0 001 1000% EFFL 07/16/02 17,276 40 10802 <5 0 01 1000% <0 050 0 001 1000% EFFL 07/30/02 17,358 40 10821 -- 01 1000% -- 0 001 1000% • EFFL 08/13/02 17,949 40 10311 <5 0 01 1000% <0 050 0 001 1000% EFFL 08/28/02 18,309 40 10311 01 1000% 0 001 1000% EFFL 09/12/02 19,671 40 9820 <5 0 01 1000% <0 050 0 001 1000% EFFL 09/24/02 19,960 40 8810 -- 01 1000% -- 0 001 1000% EFFL 10/08/02 19,297 d 40 9821 - 01 1000% 0 001 1000% EFFL 10/22/02 19,297 d - -- -- 00 1000% -- 0 000 1000% EFFL 11/05/02 19,297 d 00 1000% 0 000 1000% EFFL 11/20/02 19,297 d - 00 1000% - 0 000 1000% EFFL 12/03/02 19,297 d - -: 00 1000% -- 0 000 1000% EFFL 12/17/02 19,297 d 00 1000% 0 000 1000% EFFL 01/21/03 19,391 40 10821 <5 0 01 100 0% <0 050 0 001 1000% EFFL 02/04/03 19,728 40 11731 <5 0 01 100 0% <0 050 0 001 1000% ' EFFL 03/05/03 20,426 40 10821 <50 01 1000% c0 050 0 001 1000% EFFL 04/08/03 21,072 40 10311 <50 01 1000% <0 050 0 001 1000% EFFL 05/06/03 21,910 40 9821 <60 01 1000% <0 050 0 001 1000% EFFL 06/18/03 22,748 67 10800 <1 0 01 1000% <0 5 0 001 1000% !EFFL 07/14/03 23,356 115 11100 <1 0 01 1000% <0 5 0 001 1000% EFFL 08=103 24,227 40 10100 <1 0 01 1000% <0 5 0 001 1000% Ezolanstions sdm=Standard cubic feet per minute ppmv=Parts per million by volume Ibe=Pounds TPH=Total Petroleum Hydrocarbons 'H2O=Inches of Water ' -=Not measured Notes a Data for 7/10/00 appears to be the result of laboratory error Does not match ' previous or subsequent analytical data b Influent sample for 7126/00 was not analyzed for TPH9 or STEX c Data prior to 1111/00 was reported by Gettler Ryan Inc d SVE system shut down 4002 1 ' 1/ChevronN57'75/TableslSVE 0 Tables!xis 2 of 2