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QSequoia <br />Analytical <br />404 N Wlget lane <br />Walnut Creek CA 94598 <br />(925)98&9600 <br />FAX (925) 98&9673 <br />www sequotalabs com <br />Gettler Ryan Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 25 -Jul -00 10 44 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analvte Result Lunt Units Dtlutton Batch Prepared Analyzed Method Notes <br />Eff (W007080-01) Water Sampled 06 -Jul -00 1130 Received 06 -Jul -00 13 45 P-02 <br />Purgeable Hydrocarbons <br />170 <br />50 ug/I 1 0007003 07 -Jul -00 07 -Jul -00 DSS LUFT <br />Benzene <br />ND <br />0 50 » " <br />Toluene <br />15 <br />0 50 " <br />Ethylbenzene <br />ND <br />050 <br />Xylenes ttotal) <br />6 1 <br />050 <br />Surrogate a a a-Tnfluorotoluene <br />953% 70-130 11" <br />MP -2 (W007080-02) Water Sampled <br />06 -Jul -00 1138 <br />Received 06 -Jul -00 13 45 P-02 <br />Purgeable Hydrocarbons <br />55 <br />50 ug/1 I 0607003 07 -Jul -00 07 -Jul -00 DHS LUFT <br />Benzene <br />ND <br />0 50 1» „ » <br />Toluene <br />2 0 <br />0 50 " <br />Ethylbenzene <br />ND <br />050 <br />Items (total) <br />11 <br />0 50 " <br />ate a,a,a-Tnfluorotoluene 940% 70-130 " <br />MP -1 (W007080-03) Water Sampled 06 -Jul -00 1136 Received 06 -Jul -00 13 45 <br />Purgeable Hvdrocarbons ND 50 ugol 1 0007003 07 -Jul -00 07 -Jul -00 DHS LUFT <br />Benzene ND 050 <br />Toluene 19 050 » » <br />Ethylbenzene ND 050 » » » » <br />Xylenes (total) ND 050 <br />Surrogate a a,a-Tnfluorotoluene 104%1-0-130 " <br />Lot(W007080-04) Water Sampled 06Jul-0011 39 Received 06Ju1-0013 45 P-04 <br />Purgeable Hydrocarbons 40000 5000 ugrl too 0007003 07 -Jul -00 07 -Jul -00 <br />Benzene 7300 50 <br />Toluene 210 50 <br />Ethylbenzene 270 50 <br />xylenes (total) 230 so » » » <br />Surrogate a,a,a-Tnfluorotoluene 103% 70-130 " " " <br />DHS LUFT <br />" <br />[iota Analvttcal - Walnut CIeek The results in tins report apply io The samples analysed in accordance with the chain of <br />custody doatment This analyucal report must be reproduced m its enurety <br />Page 2 of 25 <br />