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Sequoia <br />Analytical <br />404 Nl Wiget Lane <br />Walnut Creek CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />www sequotaiabs COM <br />Gettier Rva1t Inc - Dublui Project Chevron <br />6747 Sierra Court Suite ! Project Number Chevron 0-5775 Reported <br />Dublin CA 94568 Protect Manager Scott Polston 24 -Aug -00 14 37 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX by DHS LUFT - Quality Control <br />Sequoia Analytical - Walnut Creek <br />Reporting Spike Source %REC RPD <br />Analvte Result Limit Uruts Level Result °/oREC Limits RPD Lunit Notes <br />Batch OH23003 - EPA 5030E [PIF) <br />Blank (OH23003-BLKI) Prepared & Analyzed 23 -Aug -00 <br />Purgeabie Hrdrocariwrts <br />Benzene <br />Toluene <br />Ethylberime <br />Xylenes (total) <br />Surrogate aaa-Trijluorololuene <br />ND 050 <br />ND 050 <br />ND 050 <br />ND 050 <br />301 - --- <br />ugli <br />300 100 .10.130 <br />LC$ (OH23003-BSI) <br />Source W008367-02 <br />Prepared & Analyzed 23 -Aug -00 <br />Prepared & Analyzed 23 -Aug -00 <br />Benzene <br />198 <br />050 <br />ug/l 700 990 70.130 <br />70-130 <br />200 <br />050 <br />200 100 70-130 <br />OrInz,ne <br />202 <br />050 <br />200 lot 70-130 <br />Xylenes (total) <br />579 <br />050 <br />600 965 70-130 <br />Sxrrogata aaa-Trrfluorntoluersr <br />298 <br />540 050 <br />300 993 70.1.10 <br />Martz Sptke (OtMO03-MSI) <br />Source W008367-02 <br />Prepared & Analyzed 23 -Aug -00 <br />Benme <br />173 030 U94 <br />200 <br />ND <br />865 <br />70-130 <br />%tnene <br />[so 050 <br />200 <br />10 <br />950 <br />70-130 <br />Etliytbenzene <br />t9 0 050 " <br />200 <br />ND <br />950 <br />70-130 <br />xylenes (total) <br />540 050 <br />600 <br />099 <br />983 <br />70.130 <br />Stank <taa-TtJfTuorotohcena 283 300 913 70-130 <br />Matz Spike Dup (0H23003 -MMI) <br />Source W008367-02 <br />Prepares & Analyzed 23 -Aug -00 <br />BewAlle <br />191 050 ugA <br />200 <br />ND <br />955 <br />70-130 <br />989 <br />20 <br />Toluene <br />199 050 <br />200 <br />t 0 <br />945 <br />70.130 <br />100 <br />20 <br />FlhyRwacne <br />195 050 " <br />200 <br />ND <br />975 <br />70.130 <br />260 <br />20 <br />Xylenes (total) <br />$62 050 <br />600 <br />099 <br />920 <br />70.130 <br />399 <br />20 <br />Surrogate a aa-TnJluorotoluem <br />292 <br />3Q0 <br />973 <br />70.130 <br />Aitalvtical - Walnut Creek <br />I /w resuus tai Ws Mport apPty to the samples analyzed rn accordwwo with the chain of <br />custody document Teas analytical report must be reproduced in its ernrrety <br />Page 6 of 8 <br />