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Sequoia <br />Analytical <br />r <br />444 N %Mget Lane <br />Walnut Geek CA 94598 <br />(925)988-9600 <br />FAX (925) 988-9673 <br />www sequolalabs com <br />Giller Ryan, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron 4 9-5775 Reported <br />Dublin CA, 94568 Project Manager Deanna L Harding 29 -Jul -0017 31 <br />Total Purgeable Hydrocarbons (C6 -C12), BTEX and MTBE by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analyte Result Linut Units Dilution Batch Prepared Analyzed Method Notes <br />MW -1013 (W007484-13) Water Sampled 24 -Jul -0010 35 Received 25 -Jul -00 14 30 <br />Purgeable Hydrocarbons ND 50 uO 1 OG27001 27 -Jul -00 27 -Jul -00 EPA <br />8015MI8020 <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 48 25 " <br />Surrogate a,a,a-Tnfluorotoluene 100% 70-130 " <br />MW -11A (W007484-14) Water Sampled 24 -Jul -0015 40 Received 25 -Jul -00 14 30 <br />Purgeable Hydrocarbons <br />ND <br />50 ug/l 1 OG26003 26 -Jul -00 <br />26 -Jul -00 EPA <br />801 SM/8020 <br />Benzene <br />ND <br />050 <br />" <br />Toluene <br />ND <br />050 <br />Eth Ibenzene <br />ND <br />050 <br />X (total) <br />ND <br />050 <br />M tert-butyl ether <br />ND <br />25 <br />Surrogate a,a,a-Tnfluorotoluene <br />920% 70-130 <br />" <br />MW -11B (W007484-15) Water <br />Sampled 24 -Jul -0010 16 Received 254ul-0014 30 <br />Purgeable Hydrocarbons <br />ND <br />50 ugn 1 OG26001 26 -Jul -00 <br />26 -Jul -00 EPA <br />8015M/8020 <br />Benzene <br />Benzene <br />,Try <br />ND <br />050 n n n n <br />w w <br />Toluene <br />ND <br />050 <br />" <br />Ethylbenzene <br />ND <br />050 ^ w w w <br />n w <br />Xylenes (total) <br />ND <br />050 ^ ^ w w <br />n n <br />Methyl tert-butyl ether <br />ND <br />25 w w w w <br />n w <br />Surrogate qa,a-Tnfluorotoluene <br />960% 70-130 <br />" <br />I SeW Analytical - Walnut Creek <br />The results in flus report apply to the samples analyzed in accordmwe with the chain of <br />custody document This analytical report must be reproduced in as entirety <br />Page 6 of 26 <br />