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Sequoia <br />Analytical <br />404 N WlSet Lane <br />Walnut Geek CA 94598 <br />(925)988-9600 <br />FAX (925) 988-9673 <br />www sequoWabs corn <br />Gettler Ryan, Inc - Dublin Project Chevron <br />6747 Sierra Court Smte J Project Number Chevron # 9-5775 Reported <br />Dublin CA, 94568 Project Manager Deanna L Harding 29 -Jul -00 17 31 <br />Total Purgeable Hydrocarbons (C6 -C12), BTEX and MTBE by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />U]yte Result Lumt Units Dilution Batch Prepared Analyzed Method Note <br />MW -6 (W007484-07) Water Sampled 24 -Jul -00 16 59 Received 25 -Jul -00 14 30 <br />Purgeable Hydrocarbons ND 50 ug/1 1 OG26003 2&Jul-00 26 -Jul -00 EPA <br />8015M/8020 <br />Benzene 057 050 <br />Toluene ND 0 50 <br />Ethylbenzene ND 050 <br />Xylenes (total) ND 0 50 <br />Methyl tert-butyl ether 340 2 5 " <br />Surrogate a,a,a-Trifluorotoluene 947% 70-130 <br />MW -7 (W007484-08) Water Sampled 24 -Jul -00 15 28 Received 25 -Jul -00 14 30 <br />Purgeable Hydrocarbons ND 50 ug4 1 OG26003 26 -Jul -00 26 -Jul -00 EPA <br />8015M/8020 <br />Benzene ND 050 <br />Toluene ND 050 " <br />E enzene ND 050 <br />s (total) ND 050 " <br />Me yl tert-butyl ether ND 25 " <br />Surrogate a,a,a-Tnfluorotoluene <br />990% 70-130 " <br />MW -8A (W007484-09) Water <br />Sampled 24Ju1-0013 36 <br />Received 25 -Jul -00 14 30 <br />Purgeable Hydrocarbons <br />ND <br />50 ugll 1 OG26003 26 -Jul -00 26 -Jut -00 EPA <br />8015M/8020 <br />Benzene <br />ND <br />050 <br />Toluene <br />ND <br />050 " <br />Ethylbenzene <br />ND <br />050 w w w w w w <br />Ay1enw (tow) <br />ND <br />050 w w w w w w <br />Methyl tert butyl ether <br />ND <br />25 w w w w w w <br />Surrogate a,a,a-Tnfluorotoluene <br />950% 70-130 " <br />Analytical - walnut Creek <br />The results in thus report apply to the samples analyzed in accordance with the chain of <br />custody document. Tins analytical report must be reproduced in its entirety <br />Page 4 of 26 <br />