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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CZ 95834 <br /> {916)921-9600 <br /> FAX(916)921-0100 <br /> a- Analytical www seduotalabscorn <br /> Stratus Environmental Project ARCO 2168,Stockton,CA <br /> 3330 Cameron Park Drive,Ste 550 Project Number 2168,Stockton,CA Reported <br /> Cameron Park CA,95682 Project Manager Jay Johnson 0$!28102 14 29 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source °1 REC RPD <br /> Analyte Result Limit Units Level Result %REC lamas RPD Limit ]Votes <br /> Batch 2080277-EPA 5030B P <br /> Blank(2080277-BLKI) Prepared&Analyzed 08/27/02 <br /> Purgeable Hydrocarbons ND 50 ug11 <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate a a a-Trrfluorotoluene 915 100 92 60-140 <br /> LCS(2080277-BS1) Prepared&Analyzed 08/27/02 <br /> Benzene 953 050 ug/l 100 95 70-130 <br /> Toluene 100 050 too 100 70-130 <br /> Etliylbenzene 100 0 50 100 100 70-130 <br /> es(total) <br /> 308 050 300 103 70-130 <br /> gate aaa-Tnfluorotoluene <br /> 967 100 97 60-140 <br /> Matrix Spike(2080277-MSI} Source 5208305-07 Prepared&Analyzed 08/27/02 <br /> Benzene 922 050 ugll 100 ND 89 60-140 <br /> Toluene 925 050 t 0 0 ND 92 60-140 <br /> Ethylbenzene 949 050 JOG ND 95 60-140 <br /> Xylenes(total) 296 050 300 ND 95 60-140 <br /> Surrogate a a a-Trtfluorotoluene 900 100 90 60-140 <br /> Matrix Sptke Dup(2080277-MS DI) Source 5208305-07 Prepared&Analyzed 08/27/02 <br /> Benzene 9 68 050 ug/l 10 0 ND 94 60-140 5 25 <br /> Toluene 9 67 050 loo ND 97 60-140 4 25 <br /> Ethylbenzene 998 050 100 ND 100 60-140 5 25 <br /> Xylenes(total) 301 050 300 ND 100 60-140 5 25 <br /> Surrogate a a a-Trifluoratoluene 9 03 100 90 60-140 <br /> uoia Analytical-Sacramento The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced:n its entirety <br /> Page 8 of 1 l <br />