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Sequo a $19 Striker Avenue Suite 8 <br /> 1 Sacramento CA 95834 <br /> Ci) (916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical www sequoialabs com <br /> J <br /> Delta Environmental Consultants(Cameron Park) Project Arco 6100,Tracy, CA <br /> 3330 Cameron Park Dr Ste 550 ProectNumber N/A Reported <br /> Cameron Park CA,95682 Project Manager .lay Johnson 11/29/01 14 47 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %RBC Limits RPD Limit Notes <br /> Batch 1110157- EPA 5030B (PIT) <br /> Blank(11.10157-BLK1)� Prepared&Analyzed 11/13/01 <br /> Purgeable Hydrocarbons ND 50 u2A <br /> Benzene ND 050 ^ <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate a a a-Trifluorotoluene 649 100 649 60-140 <br /> LCS (111015.7-BSI) _ _ _ Prepared&Analyzed 11/13/01 <br /> Benzene 997 0 50 ug/) 100 99 7 70-130 <br /> Toluene 939 050 100 939 70-130 <br /> thylbenzene 9 11 050 100 911 70-130 <br /> lenes(total) —_ 282 050 300 940 70-130 <br /> Surrogate a a a-Tr fluorotoluene 11 0 100 110 60-140 <br /> Matrix Spike(1110157-MS1) Source 5111153-01 Prepared&Analyzed. 11/13/01 _ <br /> Benzene 945 050 ug/l 100 ND 94 5 60-140 <br /> Toluene 8 83 050 100 ND 883 60-140 <br /> Ethylbenzene 871 050 100 ND 87 1 60-140 <br /> Xylenes(total) 263 050 300 ND 877 60-140 <br /> Surrogate a a a-Tnfluorotoluene 995 100 995 60-140 <br /> Matrix Spike Dup(1110157_MSD1) _ Source S111153-01 Prepared&Analyzed 11/13/01 _ <br /> Benzene 943 0 50 ug/l 100 ND 943 60-140 0 212 25 <br /> Toluene 8 85 0 a0 10 0 ND 88 5 60-140 0 226 25 <br /> Ethylbenzene 864 0 50 100 ND 864 60-140 0 807 25 <br /> Xylenes(total) 263 0 50 300 ND 877 60-140 000 25 <br /> Surrogate a a a-Triuorotoluene 103 100 103 60-140 <br /> Awk <br /> quota 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 /> Paye 6 of 9 <br />