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(1 404 N. t lane Wige Sequoia Walnut creek.CA94598 (925)988-9600 FAX(925)988-9673 Analytical w+�tw.�,,,p`ol�s.com Gettler Ryan,Inc.-Dublin Project: Chevron 6747 Sierra Court Suite J Project Number: Chevron R 9--4275 Reported: Dublin CA,94568 Project Manager: Deanna L.Harding 15-Mar-01 10:45 Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT Sequoia Analytical -Walnut Creek Reporting Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes MW-1 (W103066-03RE1)Water Sampled: 02-Mar-01 11:19 Received: 02-Mar-01 16:05 Methyl tent-butyl ether 970 500 ugn 200 1C04003 03-Mar-01 05-Mar-01 EPA 8015M/8020 Surrogate:a,a,a-Trifluorotoluene 99.7% 70-130 " P-01 MW-2(W103066-04)Water Sampled: 02-Mar-01 11:40 Received: 02-Mar-01 16:05 EPA Purgeable Hydrocarbons 1400 500 ug/1 10 1C04003 03-Mar-01 03-Mar-OI 801 SM 8020 Benzene 25 5.0 " Toluene ND 5.0 " Ethyfbenzene 17 5.0 " Xylenes(total) ND 5.0 " Methyl tert-butyl ether 380 25 CC-3 Surrogate:a,a,a-Trifluorotoluene 101 % 70-130 " -3(W103066-05)Water Sampled: 02-Mar-01 07:08 Received:02-Mar-01 16:05 le Hydrocarbons ND 50 ug/I 1 1C04O03 03-Mar-01 03-Mar-01 EPA 8015M/8020 Benzene ND 0.50 „ Toluene ND 0.50 „ Ethylbenzene ND 0.50 Xylenes(total) ND 0.50 Methyl Cert-butyl ether 420 2.5 CC-3 Surrogate:a,a,a-Trifluorotoluene 113 % 70-130 " MW4(W103066-06)Water Sampled: 02-Mar-01 07:33 Received:02-Mar-01 16:05 Purgeable Hydrocarbons ND 50 ugfl 1 1004003 03-Mar-01 03-Mar-01 EPA 8015M/8020 Benzene ND 0.50 „ Toluene ND 0.50 „ Ethylbenzene ND 0.50 ND 0.50 Xylenes(total) „ Methyl tert-butyl ether 79 2.5 CC-3 Surrogate.,a,a,a-Tris luorotoluene 107% 70-130 " sults in chis re art to the samples analyzed in accordcnrce with the chain of �.la Analytical -Walnut CFBe1C The re P apply F custody document.This analytical report must be reproduced in its entirety. Page 3 of 14