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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> t (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> www.sequoiatabs.com <br /> 1330 <br /> ates Environmental project: ARCO 548,Stockton,CA <br /> Cameron Park Drive,Ste. 550 projectNumber: 548,Stockton,CA Reported: <br /> meron Park CA,95682 project Manager: Jay Johnson 06/24/02 16:34 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT <br /> Sequoia Analytical- Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> VW-3 5206212-09 Water Sampled:06/17/02 07:38 Received:06/17/02 11:00 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 2060241 06/19/02 06/19/02 DHS LUFT <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 <br /> Xylenes(total) ND 0.50 <br /> Surrogate:a,a,a-Triuorotoluene 99% 60-140 " <br /> VW-4 5206212-10 Water Sampled:06/17/02 06:47 Received:06/17/02 11:00 <br /> Purgeable Hydrocarbons 59 50 ug/1 1 2060241 06/19/02 06/19/02 DHS LUFT HC-12 <br /> Benzene ND 0.50 " <br /> Toluene ND 0.50 „ <br /> Ethylbenzene ND 0.50 <br /> Xylenes(total) ND 0.50 " <br /> Surrogate:a,a,a-Trifluorotoluene 99% 60-140 " " " „ <br /> j1W-55 5206212-11 Water Sampled. 06/17/02 08:08 Received: 06/17/02 11:00 <br /> geable Hydrocarbons 190 50 ug/1 1 2060241 06/19/02 06/19/02 DHS LUFT HC-12 <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 <br /> Xylenes(total) 6.3 0.50 <br /> Surrogate:a,a,a-Tris luorotoluene 92% 60-140 " « <br /> VW-51)(5206212-12)Water Sampled: 06/17/02 08:14 Received: 06/17/02 11:00 <br /> Purgeable Hydrocarbons 3300 500 ug/i 10 2060241 06/19/02 06/19/02 DHS LUFT . <br /> Benzene 12 5.0 <br /> Toluene 40 5.0 " <br /> Ethylbenzene 36 5.4 " <br /> Xylenes(total) 1200 5.0 " <br /> Surrogate:a,a,a-Trifluorotoluene 703% 60-140 " <br /> oia Analytical -Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page Page 4 of 13 <br />