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91 Suitor Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-96DO <br /> FAX 6) 00 <br /> Analytical www.scquoialabs.com <br /> Gettler-Ryan-Rancho Cordova Project: Former Unocal 0187,Stockton,CA 5307508 <br /> 3140 Gold Camp Dr.,Ste. 170 Project Number: N/A Reported: <br /> Rancho Cordova CA,95670 Project Manager: Geoffrey D.Risse 08/05/03 17:55 <br /> Gasoline(2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B <br /> Sequoia Analytical- Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Hatch Prepared Analyzed Method Notes <br /> NP-1-22(S307508-04)Water Sampled:07/22/03 07:35 Received:07/22/03 16:07 <br /> Purgeable Hydrocarbons 60 50 ug/l 1 3080031 08/04/03 08/05/03 EPA 8015/8021 <br /> Benzene 1.1 0.54 <br /> Toluene ND 0.50 " <br /> Ethylbenzene 0.76 0.50 <br /> Xylenes(total) 8.5 0.50 " <br /> Methyl tert-butyl ether ND 2.0 " <br /> Surrogate:a,a,a-Trifluorotoluene 85% 60-140 <br /> NP-1-65(S307508-05)Water Sampled:07/22/03 07:47 Received:07/22/03 16:07 <br /> Purgeable Hydrocarbons 1100 200 ug/l 4 3080031 08/04/03 08/05/03 EPA 8015/8021 <br /> Benzene 36 2.0 " <br /> Toluene 24 2.0 " <br /> Ethylbenzene 120 2.0 <br /> Xylenes(total) 170 2.0 " <br /> Methyl tert-butyl ether ND 8.0 " <br /> urrogate:a.a.a-Triuorotoluene 72% 60-140 " <br /> NP-1-111(S307508-06)Water Sampled:07/22/0307:57 Received:07/22/03 16:07 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 3080031 08/04/03 08/04/03 EPA 8015/8021 <br /> Benzene ND 0.50 " " <br /> Toluene ND 0.50 " ^ <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 " <br /> Methyl tert-butyl ether ND 2.0 " <br /> Surrogate:a.a.a-Triuorotoluene 82% 60-140 " <br /> Sequoia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. Unless otherwise stated, results are reported on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> Page 4 of 8 <br />