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TABLE 6 SOIL VAPOR EXTRACTION SYSTEM EMISSION DATA Former Chevron Service Station#9 5775 301 West Kettleman Lane Lodi,California TPH as Gasoline Benzene Effluent Effluent Hour Meter Blower Average Concen-Emission Destruction Concen- Emission Destruction Sample Date Reading Vacuum Flow Rate trauon Rate Efficiency tratfon Rate Efficiency ID Sampled (hours) Notes ("H20) (scfm) (ppmv) (lbs/day) (percent) (ppmv) Qbs/day) (percent) EFFL 01/31/02 13,297 40 10331 -- 01 1000% -- 0 001 1000% EFFL 02/06/02 13,439 40 9820 <5 0 01 1000% <0 20 0 001 1000% EFFL 02/13/02 13,807 40 10271 -- 01 1000% -- 0 001 1000% EFFL 03/06/02 14,112 40 10802 <5 0 of 1000% <0 20 0 001 1000% EFFL 03/13/02 14,280 40 10802 -- 01 1000% -- 0 001 1000% EFFL 03/20/02 14,448 40 10802 <5 0 01 1000% <0 050 0 001 1000% BFFL 04/03/02 14,788 40 -- -- 00 1000% -- 0000 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% 0001 1000% EFFL 04/30/02 15 431 40 9820 <5 0 01 1000% <0 050 0 001 100 0% 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 M00% EFFL 05/29/02 16,127 40 103 11 <5 0 01 1000% <0 050 0 001 1000% EFFL 06/04/02 16,271 40 10902 -- 01 1000% -- 0 001 100 096 EFFL 06/11/02 16,439 40 10321 - 01 1000% - 0 001 1000% EFFL 06/18/02 16,609 40 10902 -- 01 1000% - 0 001 1000% EFFL 06/25/02 16,775 40 10902 <5 0 01 1000% <0 050 0 001 1000% Explanadoti_s scfm=Standard cubic feet per mnute ppmv=Parts per million by volume lbs=Pounds TPH=Total Petroleum Hydrocarbons H2O=Inches of Water =Not measured Notes a. Data for 71101410 appears to be itie result of laboratory error Does not match previous or subsequent analytical data b Influent sample for 7126100 could not be analyzed fur TPHg or BTEX c Data pnor to ll/l/00 was repoited by Gettler Ryan Inc O&M Tables ids 2 of 2