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�1 Sequoia <br />Analytical <br />Gealer Ryan, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 <br />Dublin CA, 94568 Project Manager Deanna L Harding <br />Total Purgeable Hydrocarbons (C6 -C12), BTEX and MTBE by <br />Sequoia Analytical - Walnut Creek <br />464 N Wlget Lane <br />Walnut Creek CA 94598 <br />(925)9W9600 <br />FAX (925) 988-9673 <br />www sequolafabs cam <br />Reported <br />29 -Jul -00 17 31 <br />LUFT <br />Reporting <br />lnaiyte Result Lunit Units Dilution Batch Prepared Analyzed Method Note <br />MW -12A (W007484-16) Water <br />Sampled 24 -Jul -0014 30 <br />Received 25 -Jul -00 14 30 <br />Purgeable Hydrocarbons <br />ND <br />50 ug/1 1 OG26001 26 -Jul -00 <br />26 -Jul -00 EPA <br />8015M/8020 <br />Benzene <br />ND <br />050 <br />Toluene <br />ND <br />050 <br />Ethylbenzene <br />ND <br />050 <br />Xylenes (total) <br />ND <br />050 <br />Methyl tent -butyl ether <br />ND <br />25 <br />" <br />Surrogate a,a,a-Tnfluorotoluene <br />101 % 70-130 <br />MW -12B (W007484-17) Water <br />Sampled 244u1-00 09 40 <br />Received 25 -Jul -0014 30 <br />Purgeable Hydrocarbons <br />ND <br />50 ug/l i OG26001 26 -Jul -00 <br />26 -Ju) -00 EPA <br />8015Mr8020 <br />Benzene <br />ND <br />050 <br />Toluene <br />ND <br />050 <br />~ <br />Ethylbenzene <br />ND <br />050 <br />Xylenes (total) <br />ND <br />050 ^ <br />~ <br />Methyl tent -butyl ether <br />ND <br />25 w « ^ w <br />w « <br />Surrogate a,a,a-Tnfluorotoluene <br />887% 70-130 <br />MW -13 (W007484-18) Water Sampled 24 -Jul -0011 41 <br />Received 25-Ju1-0014 30 <br />Purgeable Hydrocarbons <br />ND <br />50 uga 1 0026001 26 -Jul -W <br />26 -Jul -00 EPA <br />8015M=20 <br />Benzene <br />ND <br />050 ^ <br />^ <br />Toluene <br />ND <br />050 w w w w <br />• w <br />Ethylbenzene <br />ND <br />050 w w ^ w <br />• « <br />Xylenes (total) <br />ND <br />050 • ^ <br />^ <br />Methyl tert-butyl ether <br />ND <br />25 w w w <br />w <br />Surrogate a,a,a-Tnfluorotoluene <br />109% 70-130 <br />Sequoia Analytical - Walnut Creek The riendis to tins report apply to rhe samples analwed in accordance with the chain of. <br />custody document This analytical report must be reproduced in its -1119 <br />Page 7 of 26 <br />