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i <br /> 819 Striker Avenue suite 8 <br /> Sequoia Sacramento C95834 <br /> (916)9z2 1-9600 I <br /> FAX(916)921-0100 <br /> Analytical "^"'"seyt,o`al�tln corn <br /> Gettler-Ryan-Rancho Cordova Project Former Unocal 0187,Stockton,CA <br /> Project Number NIA Reported <br /> 3140 Gold Camp Dr,Ste 17006/04/0213 17 <br /> Rancho Cordova CA,95670 Project Manager David Herzog <br /> Total Purgeable Hydrocarbon,BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical- Sacramento <br /> i <br /> I <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Ltmlt Units Level Result %REC bruits RPD Urmt Notes <br /> Batch 2050268-EPA 5030B P <br /> Blank(2050268-BLKI) Prepared&Analyzed 05/23/02 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) <br /> ND 050 " <br /> Methyl tert-butyl ether ND 2 5 <br /> Surrogate a a a-Triuorotoluene 106 100 106 60-140 <br /> LCS(2050268-BSI) Prepared&Analyzed 05/23/02 <br /> Benzene 113 050 ug/l 100 113 70-130 <br /> Toluene 114 0 50 100 114 70-130 <br /> enzene <br /> 114 050 100 114 70-130 <br /> es(total} 349 0 50 300 116 70-130 <br /> Methyl tert-butyl ether 112 2 5 100 112 70-130 — <br /> Surrogate a a a-Tnfluorotoluene 11 1 100 111 60-140 <br /> Matrix Spike(2050268-MS1) Source 5205258-01 Prepared&Analyzed 05/23/02 <br /> Benzene 10 3 050 ug/I 100 ND 101 60-140 <br /> Toluene 103 050 100 ND 103 60-140 <br /> Ethylbenzene 105 050 100 ND 105 60-140 <br /> Xylenes(total) 323 050 300 ND 108 60-140 <br /> Methyl terk-butyl ether <br /> 112 25 too ND 109 60-140 <br /> Surrogate a a a-Trfluorotoluene 103 100 103 60-140 <br /> Matrix Spike Dup(2050268-MSD1) Source S205258-01 Prepared&Analyzed 05/23/02 _ <br /> Benzene 112 050 ug/l 100 ND ILO 60-140 8 25 <br /> Toluene 110 050 100 ND 110 60-140 7 25 <br /> Ethylbenzene 10 9 050 100 ND 109 60-140 4 25 <br /> Xylenes(total) 340 050 300 ND 113 60-140 5 25 <br /> Methyl tert-butyl ether 12 3 2 5 100 ND 120 60-140 9 25 <br /> Surrogate aaa-Tnfluorotoluene 995 100 100 60-140 <br /> uota Analytical-Sacramento The results to this report apply to the samples analyzed to accordance with the chain of <br /> custody document Ms analytical report must be reproduced to its entirety <br /> Page 5 of 7 <br />