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• Trace Analysis Laboratory, Inc. Telephone (510) 783-6960 <br /> 3423 Investment Boulevard #8 • Hayward California 94545 Facsimile (510) 783-1512 <br /> —` LOG NUMBER: 3015 <br /> DATE SAMPLED- 03/02/93 <br /> DATE RECEIVED. 03/03/93 <br /> DATE ANALYZED. 03/14/93 and 03/16/93 <br /> DATE REPORTED: 03/19/93 <br /> CUSTOMER: E-Z Serve Petroleum Marketing Company <br /> REQUESTER Paul Martin of Enviromental Oversight, Inc. <br /> PROJECT: No. 100966, 2537 Waterloo, Stockton <br /> Sample Type: Water <br /> MW-1 MW-2 MW-3 <br /> Method and Concen- Reporting Concen- Reporting Concen- Reporting <br /> Constituent: Units tration Limit tration Limit tration Limit <br /> DHS Method. <br /> Total Petroleum Hydro- <br /> carbons as Gasoline ug/1 4,800 50 420 50 280 50 <br /> Modified EPA Method 8020 for: <br /> Benzene ug/1 3,300 6 0 230 0.91 180 0.91 <br /> Toluene ug/1 ND 5 7 1 .4 0 84 ND 0.84 <br /> Ethylbenzene ug/l ND 6 5 ND 0 90 ND 0.90 <br /> Xylenes ug/1 40 16 5.4 2 4 6.5 2.4 <br /> MW-4 MW-5 Method Blank <br /> Method and Concen- Reporting Concen- Reporting Concen- Reporting <br /> Constituent: Units tration Limit tration Limit tration Limit <br /> DHS Method- <br /> Total Petroleum Hydro- <br /> carbons as Gasoline ug/l 130 50 95 50 ND 50 <br /> Modified EPA Method 8020 for- <br /> Benzene ug/l 11 0.50 ND 0.50 ND 0.50 <br /> Toluene ug/l 0.84 0.50 ND 0.50 ND 0.50 <br /> Ethylbenzene ug/l ND 0 50 ND 0.50 ND 0.50 <br /> Xylenes ug/l 3.9 1 .5 ND 1 .5 ND 1.5 <br /> QC Summary: <br /> q Recovery- 101 116 106 <br />,,% RPD 7.9 10 1 .3 <br /> Concentrations reported as ND were not detected at or above the reporting limit. <br /> 2� y <br /> Louis W Dupuis �Q} <br /> Founding Member of the Assoc+ati0�o��a i omfaS a ung Wraatoriesy Control Manager <br />