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404 N WISet lane <br />Walnut Creek reek 94598 <br />(925) 988-96009600 <br />4 <br />FAX (925) 988-%73 <br />Analytical `vwwseq`olalabs`°m <br />ttler Ryan, Inc - Dublin Project Chevron <br />17 Sierra Court Suite J Project Number Chevron # 9-5775 Reported <br />Du elm CA, 94568 Project Manager' Deannal, Harding 29 -Jul -0017 31 <br />Total Purgeable Hydrocarbons (C6 -C12), BTEX and MTBE by DHS LUFT - Quality Control <br />Sequoia Analytical - Walnut Creek <br />Reporting Spike Source %REC RPD <br />Anahte Result Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch OG27001 - EPA 5030B [PIT] <br />Blanc. (OG27001-SLKI) <br />Source W007337 -M <br />Prepared & Analyzed 27 -Jul -00 <br />Purgeable Hydrocarbons <br />ND <br />50 ug/l <br />Benzene <br />ND <br />050 " <br />Toluene <br />ND <br />050 " <br />EMylbenzene <br />ND <br />050 " <br />Xylenes (total) <br />ND <br />050 " <br />Methyl tent -butyl ether <br />ND <br />25 " <br />Surrogate a cka-Tnjluororoluene 292 300 973 70-130 <br />LCS (OG27001-BS1) Prepared & Analyzed 27 -Jul -00 <br />Benzene 155 050 ug/l 200 775 70-130 <br />Tohnne 168 050 200 840 70-130 <br />Ethylbenzene t99 050 " 200 995 70-130 <br />Xylatotal) 554 050 600 923 70-130 <br />Sevroga7e qqa-Tri luorotoluene 253 300 843 70-130 <br />Matrix Splice (OG27001-MS1) <br />Source W007337 -M <br />Prepared & Analyzed. 27 -Jul -00 <br />Benzene <br />166 050 ug/l <br />200 <br />ND <br />830 <br />70-130 <br />Tohune <br />197 050 <br />200 <br />ND <br />935 <br />70-130 <br />Ethyibenzene <br />212 050 " <br />200 <br />ND <br />106 <br />70-130 <br />Xylenes (total) <br />594 050 <br />600 <br />ND <br />990 <br />70-130 <br />[Ago-Trifluarotohusne 257 300 857 70-130 <br />Matrix Spike Dup (OG27001-MSDI) <br />Source W007337 -M <br />Prepared & Analyzed. 27 -Jul -00 <br />Benzine <br />163 <br />030 ug/1 <br />200 <br />ND <br />82.5 <br />70-130 <br />0 604 <br />20 <br />Toluene <br />18.3 <br />050 <br />200 <br />ND <br />915 <br />70-130 <br />216 <br />20 <br />Eft4 tzene <br />219 <br />050 <br />200 <br />ND <br />109 <br />70-130 <br />279 <br />20 <br />Xylenes (total) <br />600 <br />050 " <br />600 <br />ND <br />100 <br />70-130 <br />101 <br />20 <br />Surrogate %qa-7WJ7uorowhwne <br />257 <br />300 <br />857 <br />70-130 <br />Analytical - Walnut Creek <br />The results in ties report apply to the samples analysed in accordance with the chain of <br />custody document. This analytical report must be reproduced in its entmety <br />Page 20 of 26 <br />