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Sequoia oia 404 N WiLane 1 <br /> Walnut Creek CAA 94598 <br /> (925)988 9600 <br /> FAX Analytical alabs c <br /> www sequollabs 73 <br /> com ' <br /> Secor- Rancho Cordova Project Arco 1 <br /> 3017 Kilgore Rd, Ste #100 Project Number Arco# 595, Stockton Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 29-Aug-01 11 26 <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 /> Analyte Result Limit Units Level Result %REC Limas RPD Lima Notes <br /> Batch 1G20001 - EPA 5030B PIT <br /> Blank(1G20001-BLK1) Prepared&Analyzed 20-Jul-01 <br /> Purgeable Hydrocarbons j66-62) t D 50 ug/I <br /> Benzene ND 050 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 <br /> Surrogate a a a-Triuorotoluene 292 300 973 70-130 —� <br /> Blank(IG20001-BLK2) Prepared&Analyzed 22-Jul-01 <br /> Purgeable Hydrocarbons(C6-C 12) ND v 50 ug/l <br /> Benzene ND 050 _ <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 <br /> Surrogate a a a-Trtfluorotoluene 310 300 103 70-130 <br /> Blank(1G20001-BLK3) Prepared&Analyzed 23-Jul-01 <br /> Purgeabie Hydrocarbons(C6-Ci2) ND 50 ug/I y <br /> Benzene _ - _ _ _ _-ND--- _ -050- <br /> Toluene <br /> 050-Toluene ND 050 " <br /> Ethylbenzene - ND - 050 ' <br /> Xylenes(total) ND 050 " <br /> Surrogate a a,a-Triuorotoluene 286 300 953 70-130 <br /> Blank(1G20001-BLK4) Prepared&Analyzed 26-Jul-01 i <br /> Purgeable Hydrocarbons(C6-C12) ND 50 ug/I <br /> Benzene ND 050 " <br /> Toluene ND 050 ' <br /> Ethylbenzene ND 050 " <br /> Xytenes(total) ND 050 " <br /> Surrogate a a a-Trrfluorotoluene 256 + LL 300 853 _ 70-130 <br /> Sequoia Analytical- Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Ars analytical report must be reproduced to its entire <br /> Page 4 of 13 <br /> i <br />