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Sequoia <br />� Analytical <br />404 N Wiget Lane <br />Walnut Geek CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />www sequaWabs com <br />Gettler Ryan, Inc - Dublin Protect Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 Reported <br />Dublin CA, 94568 Project Manager Deanna L Handing 29 -Jul -00 17 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 />Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch OG26003 - EPA 5030B [PIT] <br />Blank (OG26003-BIK1) Prepared & Analyzed 26 -Jul -00 <br />Purgeable Hydrocarbons ND 50 ug/I <br />Benzene ND 050 " <br />Toluene ND 050 " <br />Ethylbenzene ND 050 " <br />Xylenes (total) ND 050 " <br />Methyl tett--butyl ether ND 25 " <br />Surrogate qqa-Trrfluororoluene 297 300 990 70-130 <br />LCS (OG26003-BS1) Prepared & Analyzed 26 -Jul -00 <br />Benzene <br />233 <br />050 <br />ug/1 <br />200 <br />116 <br />70-130 <br />106 <br />Toluene <br />233 <br />050 <br />200 <br />200 <br />116 <br />70-130 <br />Ethylbenzene <br />Ethylbenzene <br />232 <br />050 <br />106 <br />200 <br />116 <br />70-130 <br />600 <br />Xylenes (total) <br />666 <br />050 <br />ND <br />600 <br />til <br />70-130 <br />20 <br />Surrogate qqa-Tnfluororohrene <br />1x5 <br />050 <br />600 <br />300 <br />950 <br />70-130 <br />679 <br />Matrix Spike (OG26003-MS1) <br />Source W007484-06 <br />Prepared & Analyzed 26 -Jul -00 <br />Benzene <br />212 050 ug/l <br />200 <br />ND <br />106 <br />70.130 <br />Tobiene <br />212 050 " <br />200 <br />ND <br />106 <br />70-130 <br />Ethylbenzene <br />213 050 " <br />200 <br />ND <br />106 <br />70.130 <br />Xyleaea (fatal) <br />609 050 " <br />600 <br />ND <br />102 <br />70-130 <br />Surrogate. qqa-Tnfuorotohurne 2&6 300 953 70-130 <br />Matra Spike Dup @G26003-MSDI) <br />Sourm W007484-06 <br />Prepared & Analyzed. 26 -Jul -00 <br />Benzene <br />196 <br />050 ugA <br />200 <br />ND <br />9&0 <br />70-130 <br />784 <br />20 <br />Tolume <br />196 <br />050 <br />200 <br />ND <br />980 <br />70-130 <br />784 <br />20 <br />&hylbe m- <br />198 <br />050 <br />200 <br />ND <br />990 <br />70-130 <br />730 <br />20 <br />Xylenes (total) <br />569 <br />050 <br />600 <br />ND <br />949 <br />70-130 <br />679 <br />20 <br />Sunngate gga•7NjluorWah&ene <br />271 <br />300 <br />907 <br />70-130 <br />Sequoia Analytical - Walnut Creels The results m this report apply to the samples analyzed to accordar" with the shorn o <br />custody document This analymcal reporl must be reproduced in its enh <br />Page 19 of 26 <br />