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i <br /> S e cru o i a 819 Striker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> 6 <br /> (916)921-9600 <br /> ! Analytical FAX(916)921-0100 <br /> www sequoialabs cam <br /> 011CO <br /> Delta Environmental Consultants(Cameron Park) Project Arco 6100,Tracy,CA <br /> 3330 Cameron Park Dr Ste 550 Project Nutnher ARCO 6100,Tracy,CA Reported <br /> Cameron Park CA,95682 Project Manager Jay Johnson 11/19/01 14 48 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source 0/.RFC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1110103-EPA 5030B (P/T) <br /> Blank(1110103-BL_K_1) Prepared&Analyzed 11/08/01 <br /> Purgeable Hydrocarbons Y ND so ug/l <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 " <br /> Surrogate a a a-Trifluorotoluene 983 100 983 60-140 _ <br /> LCS(1110103-BSl_) _ Prepared&Analyzed 11/08/01 <br /> Benzene 940 050 ug/1 100 940 70-1.30 <br /> Toluene 917 050 100 917 70-130 <br /> thylbenzene 925 050 100 925 74-130 <br /> lenes(total) _ 27 8 050 300 927 70-130 <br /> Surrogate a a a-Try7uorotoluene 101 100 101 60-140 <br /> Matrix Spike(1110103-MSI) S111111-01 Prepared&Analyzed 11/08/01 <br /> Benzene 977 050 ug/l 100 ND 977 60-140 <br /> Toluene 976 050 100 ND 976 60-140 <br /> 6thylbenzene 968 050 100 ND 96 8 60-140 <br /> Xvlenes(total) 290 050 300 ND 967 60-140 <br /> Surrogate a a a-Tnfluorotoluene 951 100 951 60-140 <br /> _Matrix Spike Dup(1110103-MSM) Source SIIIII I-01 Prepared&Analyzed 11/08/01 <br /> Benzene 102 050 ug/1 100 ND 102 60-140 431 25 <br /> Toluene l 0 2 050 100 ND 102 60-140 441 25 <br /> Ethylbenzene 101 050 i0 0 ND 101 60-140 425 25 <br /> Xylenes(total) 302 0 50 300 ND 101 60-140 405 25 <br /> Surrogate a a a-Trifluorotoluene 969 100 969 60-140 <br /> Ask <br /> equola Analytical - Sacramento The results in the 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 5 of 7 <br />