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Sequoia <br /> 11 y i• 819 Striker Avenue,Suite B <br /> 4D e q E.a®a 6..d. Sacramento,CA 95834 <br /> (916)921-WM <br /> FAX(916)921-0100 <br /> ON-0 Analytical www.sequoialabs.com <br /> Delta Environmental Consultants(Cameron Park) Project: ARCO 5469,Stockton,CA <br /> 3330 Cameron Park Dr.Ste 550 Project Number: 5469,Stockton,CA Reported: <br /> Cameron Park CA,95682 Project Manager: Jay Johnson 05/03/02 15:45 <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 Nous <br /> MW-5(5204377-05)Water Sampled: 04/23/02 08:13 Received: 04/2310213:00 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 2040366 04/29/02 04/29/02 DHS LUFT <br /> Benzene 2.9 0.50 ^ " ^ ^ <br /> C-07 <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 ^ ^ <br /> Xylenes(total) ND 0.50 <br /> Surrogate:a,a,a-Triuorotoluene 102% 60-140 ^ ^ ^ <br /> MW-6(S204377-06)Water Sampled:04/23/02 07:19 Received: 04/2310213:00 <br /> Purgeable Hydrocarbons ND 1000 ug/1 20 2040366 04/29/02 04/29/02 DHS LUFT R-05 <br /> Benzene ND 10 R-05 <br /> Toluene ND 10 " " <br /> R-OS <br /> Ethylbenzene ND 10 " R-05 <br /> Xylenes(total) ND 10 " _ " R-05 <br /> rrogate:a,a,a-Triuorotoluene 103% _ 60-140 R-05 <br /> MW-7(5204377-07)Water Sampled: 04/23/02 04:58 Received: 04/2310213:00 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 2040366 04/29/02 04/29/02 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-Trifluorotoluene 97.5% 60-140 " ^ <br /> MW-8(S204377-08)Water Sampled: 04/23/02 05:57 Received: 04/23/0213:00 <br /> Purgeable hydrocarbons 27000 20000 ug/l 400 2050008 05/01/02 05/01/02 DHS LUFT HC-12 <br /> Benzene 16400 200 " <br /> Toluene ND 200 " <br /> Ethylbenzene ND 200 <br /> Xylenes(total) ND 200 <br /> Surrogate:a,a,a-Trifluorotoluene 107010 60-140 <br /> equoia Analytical-SacramentoThe 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 3 of 14 <br />