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TABLE 7 SOIL VAPOR EXTRACTION SYSTEM EMISSION DATA Former Chevron Service Station 9-5775 301 West Kettleman Lane Lodi, California Sample Date ID Sampled Hour Meter Reading (hours) Notes TPH as Gasoline Effluent Effluent Blower Average Concen- EmissionDestructionConcen- Vacuum Flow Rate tration Rate Efficiency tration ("H2O) (scfm) (ppmv) (lbs/day) (percent) (ppmv) Benzene Emission Rate (lbslday) Destruction Efficiency (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% - 0 001 100 0% 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 01 1000% -- 0 001 1000% EFFL 06/18/02 16,609 40 10802 -- 01 1000% - 0 001 1000% EFFL 06/25/02 16,775 40 10802 <50 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 98 20 <50 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 -- -- 0 0 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 <50 01 1000% <0 050 0 001 1000% EFFL 02/04/03 19,728 40 11731 <50 01 1000% <0 050 0 001 1000% EFFL 03/05/03 20,426 40 10821 <5 0 01 1000% <0 050 0 001 1000% Explanations sofm = Standard cubic feet per minute ppmv = Parts per million by volume lbs = Pounds TPH = Total Petroleum Hydrocarbons "H2O = Inches of Water =Not measured Notes a Data for 7/10100 appears to be the result of laboratory error Does not match previous or subsequent analytical data b Influent sample for 7/26/00 was not analyzed for TPHg or BTEX c Data pnor to 11/1/00 was reported by Gettler-Ryan Inc d SVE system shut down 4Q02 I SVE O&M Tables As 2 of 2