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Sequoia Sig Spiker Avenue 55583 s <br /> Sacramento CA 96834 <br /> (916)921-%W <br /> 100 <br /> NOAnalytical wFAX 42comww seququ olalabs om <br /> s <br /> Gettler-Ryan-Rancho Cordova Project Former LJnocal 0187,Stockton, CA 5210535 <br /> 3140 Gold Camp Dr,Ste 170 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Geoffrey D Risse 11/12/02 16 29 <br /> Total Purgeable Hydrocarbon,BTEX and MTBE by DHS LUF I' - Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> 15� Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2110108-EPA 5030B PIT <br /> Blank(2110108-BLK3) Prepared&Analyzed 11/06/02 <br /> Purgeable Hydrocarbons ND 50 ug/I <br /> Benzene ND 0 50 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate a a a-Triuorotoluene 104 100 104 60-140 <br /> Laboratory Control Sample(2110108-BS1) Prepared&Analyzed 11/01/02 <br /> Benzene 102 050 ug/l 100 102 70-130 <br /> Toluene 103 1 0 100 103 70-130 <br /> 0lbenzene 101 050 100 101 70-130 <br /> nes(total) 308 050 300 103 70-130 <br /> Methyl tert-butyl ether 110 2 5 100 110 70-130 <br /> Surrogate a a a-Tri luorotoluene 941 100 94 60-140 <br /> Laboratory Control Sample(2110108-BS2) Prepared 11/04/02 Analyzed 11/05/02 <br /> Benzene 877 050 ug/l 100 88 70-130 <br /> Toluene 876 050 100 88 70-130 <br /> Ethylbenzene 8 79 050 100 88 70-130 <br /> Xylenes(total) 265 050 300 88 70-130 <br /> Methyl tert-butyl ether 948 25 100 95 70-130 <br /> Surrogate a a a-Trifluorotoluene 881 100 88 60-140 <br /> Laboratory Control Sample(2110108-BS3) Prepared&Analyzed 11/06/02 _ <br /> Benzene 951 050 ug/l 100 95 70-130 <br /> Toluene 946 050 100 95 70-130 <br /> Ethylbenzene 951 050 100 95 70-130 <br /> Xylenes(total) 289 050 300 96 70-130 <br /> Methyl tert-butyl ether 103 2 5 100 103 70-130 <br /> Surrogate a a a-Trifluorotoluene 972 100 97 60-140 <br /> nota 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 9 of 11 <br />