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TABLE 4 <br /> GROUNDWATER EXTRACTION SYSTEM PERFORMANCE DATA <br /> Former Chevron Service Station 9-5775 <br /> 301 West Kettleman Lane <br /> Lodi,California <br /> ]PH as�Gasoline Benzene MtBE <br /> Average Influenf Influent Influent <br /> Totalizer Volume Disdiarge Concen- Removal Net Removed Concen- Removal Net Removed Concen- Removal Net Removed <br /> Sample Date Value Discharged Rate tr2idon Rate Removed ltd Date tratlon Rate Removed To Date trabon Rate Removed To Date <br /> ID Sampled Notes allons (gallons) ,�' 1L fibs/day)-(pounds) (pounds) Ibslda (pounds) unds 1L ibslda (pounds) (pounds) <br /> INFL 10/22/03 8186,420 338,556 653 <50 Goo 011 93 <2 00001 0 003 02 9 000 003 849 <br /> INFL 11/14/03 8 408 409 221,989 670 <100 000 007 94 <2 00001 0 002 02 9 000 002 850 <br /> INFL 12/11/03 8,663 405 254,996 656 <50 000 008 94 <2 00001 0 002 02 <2 000 001 850 <br /> INFL 01/19/04 J -- _ - <50 000 008 95 <2 00001 0 002 02 9 000 000 850 <br /> INFL 02/09/04 9,145,889 241,242 558 <50 000 008 96 <2 00001 0 002 02 6 000 001 850 <br /> INFL 03/09/04 9,428,621 282,732 677 <50 000 009 97 <2 00001 0 002 02 6 0 00 001 850 <br /> INFL 04/08104 9,720,988 292,367 677 <50 000 009 98 <2 00001 0 002 02 5 000 001 850 <br /> INFL 05111104 44,601 323,613 681 <50 000 010 99 <2 00001 0 003 02 4 000 001 850 <br /> INFL 06/14/04 379,896 335,295 685 <W 000 010 100 <2 00001 0 003 02 3 000 001 850 <br /> REPORTING PERIOD SECOND QUARTER 2004 <br /> PERIOD WATER DISCHARGED(gallons): 951,275 <br /> AVERAGE PERIOD°DISCHARGE RATE(gpm) 68 <br /> TOTAL POUNDS REMOVED 'i0 0 0 2 85 0 <br /> TOTAL GALLONS REMOVED 16 00 138 <br /> PERIOD,POUNDS REMOVED 03 00 00 <br /> PERIOD GALLONS REMOVED 00 00 00 <br /> EXPLANATIONS N es <br /> ug1L=Micrograms per Iger a System started by Gettler Ryan <br /> gpm=Gallons per minute b Data prior to November 1 2000 collected and reported by Geteer Ryan <br /> lbs/day=Pounds per day c Weekly O&M not performed on November 15 and 22 2000 due to system upgrades and aquifer test <br /> TPH=Total petroleum hydrocarbons d Stan-up of extraction wen F-X-3 <br /> Density of gasoline=6 t pounds per gallon a "Weekly Volume'discharge volume refers to total thrmgTi-put volume between 11/08 to 11129 2000 <br /> Density of benzene=7 34 pounds per gallon Actual weekly discharge varied significantly due to aquifer test performance <br /> Density of MtBE=6 18 pounds per gallon f Weekly O&M not performed on February 14 2001 Carbon vessels A 8 and C changed-out <br /> Mt9E=Methyl tertiary butyl ether system hvsas changed and vessels pressure-washed <br /> g Carbori Vessel A changed-out <br /> h Nowtotaltzer Installed <br /> Pump In EX-3 replaced System dawn approximately 2 hours <br /> J Field measurements not collected <br /> I <br /> ASSUMPTIONS <br /> 1) Percent carbon loading caiculabon assumes a loading isotherm of 3%by weight <br /> 2)Mass removal calcufatxrws assumes concentrations of one half the detection Amit <br /> when concentrations are reported as below detection limb <br /> w <br /> k 11Chevron195775lTables1Gwe qpr As 5 of 5 <br /> I <br />