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t <br />404 N Wiget Lane <br />Sequoia Walnut Creek CA 94598 <br />(925) 988-96W <br />FAX (925) 98&9673 <br />Analytical www sequolalaa* com <br />ewo— <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 24 -Jul -00 11 33 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX in Air (ppmv) by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analyte Result Limit Unrts Dilution Batch Prepared Analyzed Method Notes <br />Effluent (Air) (WO07143-01) Air Sampled 10 -Jul -00 10 35 Received IO -Jul -00 13 20 <br />Purgeable Hydrocarbons 27 24 ppmv 1 OG21017 13 Jul -00 21 -Jul -00 DHS LUFT <br />Benzene 013 0 016 <br />Toluene 0 058 0 013 " <br />Ethvlbenzene ND 0 012 <br />Xylenes (total) ND 0 012 <br />Influent (Air) (W007143-02) Air Sampled 10,Iul-00 10 37 Received IO -Jul -00 13 20 <br />Purgeable Hydrocarbons 71 24 ppmv I OG21017 13 -Jul -00 21 -Jul -00 DHS LUFT <br />Benzene 17 0 016 <br />Toluene 23 0 013 " <br />Ethylbenzene 015 0 012 <br />Xylenes (total) 081 0 012 " <br />L -.J <br />Analytical - Walnut Creek The results to this report apply to the samples analyzed in accordance with the chain of <br />custody document This analytical report must be reproduced was enirrety <br />Page 4 of 15 <br />