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819 Striker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> Sequoia (916)921-9600 <br /> 4 FAX(916)921-0100 <br /> CD <br /> C Analytical www secluotalabs corn <br /> 40 <br /> Gettler-Ryan-Rancho Cordova Project Former Unocal 0187,Stockton,CA S208305 <br /> 3140 Gold Camp Dr,Ste 170 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager David Herzog 08/29/02 11 37 <br /> Total Purgeable Hydrocarbon,BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %PEC Limits RPD Limit Notes <br /> Batch 2080277-EPA 5030B PIT <br /> Blank(2080277-BLKI) Prepared&Analyzed 08/27/02 <br /> Purgeable hydrocarbons ND 50 ug/l <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tent-butyl ether ND 25 " <br /> Surrogate a a a-Trifluorotoluene 925 100 92 60-140 <br /> Laboratory Control Sample(2080277-BSI) Prepared&Analyzed 08/27/02 <br /> Benzene 9 53 0 50 ug/l 100 95 70-130 <br /> Toluene 100 050 100 100 70-130 <br /> benzene 100 050 10 0 100 70-130 <br /> IRIEnes(total) 308 0 50 300 103 70-130 <br /> Methyl tert-butyl ether 10 2 25 10 0 102 70-130 <br /> Surrogate a a a-Tnfluorotoluene 967 100 97 60-140 <br /> Matrix Spike(2080277-MSI) Source S208305-07 Prepared&Analyzed 08/27/02 <br /> Benzene 922 0 50 ugA 100 ND 89 60-140 <br /> Toluene 925 0 50 100 ND 92 60-140 <br /> Ethylbenzene 949 050 100 ND 95 60-140 <br /> Xylenes(total) 286 050 300 ND 95 60-140 <br /> Methyl tert-butyl ether 109 2 5 100 ND 105 60-140 <br /> Surrogate a a a-Tris luorotoluene 900 100 90 60-140 <br /> Matrix Spike Dup(2080277-MSDI) Source 5208305-07 Prepared&Analyzed 08/27/02 <br /> Benzene 9 68 050 ug/l 100 ND 94 60-140 5 25 <br /> Toluene 9 67 050 100 ND 97 60-140 4 25 <br /> Ethylbenzene 998 050 100 ND 100 60-140 5 25 <br /> Xylenes(total) 301 0 50 300 ND 100 60-140 5 25 <br /> Methyl tert-butyl ether 118 25 100 ND 114 60-140 8 25 <br /> Surrogate a a a-TriJluorotoluene 9 03 100 90 60-140 <br /> IP <br /> uoia Analytical-Sacramento 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 in its entirety <br /> Page 6 of 8 <br />