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885 Jarvis Drive <br /> ` <br /> Sequoia 44013)7769-996070 <br /> Fnx(408)782,-6308 <br /> Analytical www sequelalabs corn <br /> OW <br /> Gettler Ryan/GeosttategieS-Dublin(Chevron) Project Chevron <br /> 6747 Sierra Court,Suite J Project Number 9-8264 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 06/06/01 16 03 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %RFC lamits RPD Limit Notes <br /> Batch 1E22002-EPA 5030B [P/TI <br /> Blank(IE22002-BLK1) Prepared&Analyzed 05/22/01 <br /> Purgeable Hydrocarbons ND 500 ug/l <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl tert-butyl ether ND 2 50 " <br /> Surrogate a a a-Trt luorotoluene 969 100 969 70-130 <br /> LCS(1 E22 002-BSI) Prepared&Analyzed 05/22/01 <br /> Purgeable Hydrocarbons 240 500 ug/l 250 960 70-130 <br /> Surrogate a a a-Triuorotoluene 108 100 108 70-130 <br /> Onx Spike(I E22002-MSI) Source MICE0466-12 Prepared&Analyzed 05/22/01 <br /> Purgeable Hydrocarbons 231 500 ug/l 250 ND 924 60-140 <br /> Surrogate a a a-Trtfluorotoluene 113 100 113 70-130 <br /> Matrix Spike Du (I E22002-M SD1) Source- MKE0466-12 Prepared&Analyzed 05/22/01 <br /> Purgeable Hydrocarbons 229 500 ug/I 250 ND 91 6 60-140 0 870 25 <br /> Surrogate a a,a-Tri luorotoluene 108 100 108 70-130 <br /> Batch 1E29003-EPA 5030B [P/T] <br /> Blank(1E29003-BLK1) Prepared&Analyzed 05/29/01 <br /> Purgeable Hydrocarbons ND 500 ug/l <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl cert-butyl ether ND 250 " <br /> Surrogate a a a-Tnfluorotoluene 108 100 108 70-130 <br /> uoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced to its entirety <br /> Page Page 11 of 23 <br />