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404 N Wiget Lane <br /> Sequoia Walnut Creek C94598 <br /> 4 (925)9888-9600 <br /> FAX(925)988 9673 <br /> (i)111go— 0 <br /> Analytical www sequoialabs corn <br /> Gettler R\an Inc -Dublin Project Tosco <br /> 6747 Sier-a Court Suite J Prolec,Number Tosco h 11 191 Reported <br /> Dublin CA 94568 Project Manager Doug Lee _--04-Sep-01 07 28 i <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DNS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Anal•'te Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch l H24003 - EPA 5030B P/T <br /> Blank 0H24003-BLK5) Prepared&Anal-,zed 27-Aug-01 <br /> Purgeable H\drocarbons(C6-C12) ND so ug/l <br /> Benzene ND 050 <br /> Toluene ND 0 50 <br /> Ethvlbenzert ND 0 50 <br /> X\lenes(total) ND 0 50 <br /> Methvl ten-Dot\+ether(MTBE) ND 25 <br /> Su <br /> rrogare a a-Tr fiuo-otoluene _ - - -- '9 0 30 C _96 i0-13(1 — --- -- <br /> LCS(1H24003-BSI) Prepared& Anah'zed 24-Aug-01 <br /> Benzene -- ------ 23 7 --050 ug/1 200 _ --1 i R 70-130�— -- --- — -- <br /> Toluene 173 050 200 86 5 70-130 <br /> EthN lbenzene 168 0 50 200 84 0 70-130 <br /> XN lenes(total) 547 050 600 91 2 70-130 <br /> Grrrogate a a a-Tris luorotolbene —— —-— --—282 — W 300 — —93 0 10-130 ---- — — _-__ <br /> LCS(1H24003-BS2) Prepared&Anahzed 27-Aag-01 <br /> 25 3 -— -- - 050-- ugll---200 120 70-130 <br /> to>uen� 18 7 050 200 93 5 70-130 <br /> E n%lbenLene 181 0 50 200 905 70-130 <br /> XN lenec(total) 59 1 050 600 98 5 70-130 <br /> Surrog-rtc 4-a a-Trifiuoroioluene 28 6 300 953 70_130 — -- -_ <br /> LCS(1H24003-BS31 Prepared&Analyzed 28-Aug-0I <br /> Benzene 229 0 50 ug/1 200 114 70-130 <br /> Toluene 196 0 50 200 98 0 70-130 <br /> Eth•]benzene 198 050 200 99 0 70-130 <br /> XN lenes(total) 61 6 0 i0 600 103 70-130 <br /> Surrogate a a a-frit uororoluene 2'6 300 92 0 70-130 <br /> Sequoia Analytical- Walnut Creel. The results in this report apply to the samples analyzed in accordance with the c <br /> custod)+documeni This analvncal report must be reproduced in its en <br /> Page 7of12 <br />