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M <br /> Sequoia 404 N ,CA Lane <br /> Walnut Creek,CA 94598 <br /> 4 (925) <br /> 600 <br /> FAX(925) 988-9g673 <br /> Analytical <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Pro}ectNumber Unocal#0187 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 09-Mar-00 10 44 <br /> Total Purgeable Hydrocarbons (C6-Cl2), BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lumt Uruts Level Result %REC Lunits RPD Limit Notes <br /> Batch 00O2002-EPA 5030B[PIT] <br /> Blank(00O2002-BLKI) Prepared&Analyzed 02-Mar-00 <br /> Purgeabie Hydrocarbons ND 50 ugll <br /> Benzene ND 0 50 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 <br /> Methyl tort-butyl ether ND 2 5 " <br /> Surrogate a,qa-Tnfluorotoluene 337 300 111 70-130 <br /> Blank(00O2002-BLK2) Prepared&Analyzed 03-Mar-00 <br /> Purgeable Hydrocarbons ND 50 ugll <br /> Benzene ND 050 " <br /> To a ND 050 " <br /> Gene ND 050 <br /> Xylenes(total) ND 050 " <br /> Methyl text-butyl ether ND 25 " <br /> Surrogate aaa-Tnfluoroioluene 33 7 300 112 70-130 <br /> LCS(00O2002-BS1) Prepared&Analyzed 02-Mar-00 <br /> Benzene 207 050 Usti 200 104 70-130 <br /> Toluene 205 050 200 103 70-130 <br /> Ethylbenzene 210 050 20 0 105 70-130 <br /> Xylenes(total) 63 9 050 600 107 70-130 <br /> Surrogate aaa-Tnfluorotoluene 299 300 997 70-130 <br /> LCS(00O2002-BS2) Prepared&Analyzed 03-Mar-00 <br /> Benzene 217 050 ugll 200 109 70-130 <br /> Toluene 216 050 20 0 108 70-130 <br /> Ethylbenzene 22 3 050 200 111 70-130 <br /> Xylenes(total) 669 050 60 0 11 l 70-130 <br /> Surrogate aaa-Tnfluorotoluene 304 300 101 7&&30 <br /> la Analyttcal-Walnut Creek The results in thus report apply to the samples analyzed to accordance with the chaun of <br /> V <br /> f <br /> custody document Thus analytical report must be reproduced to its entirety <br /> Page 17 of 22 <br />