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• yy' rr�� 819 Striker Avenue Suite 8 <br /> ® Sequoia Sacramento CA 95834 <br /> (916)921-9600 <br /> 9—! — Analytical <br /> +�1 FAX(916)921-0140 <br /> OW A1ialytica www sequoialabs corn <br /> Delta Environmental Consultants(Cameron Park) Project Arco 6100,Tracy, CA <br /> 3330 Cameron Park Dr Project Number N/A Rc,ported <br /> Cameron Park CA, 95682 Project Manager Jay Johnson 02/22/01 17 09 <br /> BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting spile Source %nREC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1020117-EPA 5030B(PIT) <br /> Blank(1020117-BLKl) Prepared&Analyzed 02/12/01 _ <br /> Benzene ND 0 500 ug/l <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 " <br /> Xy Iell es(total) ND 0 500 " <br /> Surrogate a a a Trtfluorotoluene 101 100 101 60-140 <br /> LCS(1020117-BSI) Prepared&Analyzed 02/12/01 <br /> Benzene 944 0 500 ug/l too 944 70-130 <br /> Toluene 964 0 500 100 964 70 130 <br /> Ethylbenzene 974 0 500 100 974 70-130 <br /> ,gliaJenes(total) 299 0 500 300 997 70 130 <br /> rogate a a a-Tr�fiuorotoluene 102 100 102 60-140 <br /> Matrix Spike(1020117-MS1) _ Source 5102102-03 Prepared&Analyzed_02/12/01 <br /> Benzene 941 0 500 ugt'l 100 ND 94 1 60 140 <br /> Toluene 962 0 500 too ND 962 60-140 <br /> Ethylbenzene 979 0 500 too ND 979 60-140 <br /> Xylenes(total) 30 1 0 500 300 ND 100 60-140 <br /> Surrogate a a a-Trifluorotoluene 116 100 116 60-140 -- — <br /> /Matrix Spike Dup(1020117-MSD1) Source S102102-03 _Prepared&Analyzed 02/12/01 <br /> Benzene 936 0 500 ug/l 100 ND 93 6 60 140 0 533 25 <br /> Toluene 9 60 0 500 too ND 960 60-140 0208 25 <br /> Ethylbenzene 9 72 0 500 too ND 972 60 140 0 718 25 <br /> Xylenes(total) 299 0 500 30 0 ND 99 7 60-140 0 667 25 <br /> Surrogate a a a-Trifluorotoluene W 128 100 128 60 140 <br /> quoia Analytical-Sacramento The results to this report apply to the samples analyzed in accordance with inn chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Pacle 4 of 6 <br />