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J <br /> 819 Striker Avenue Suite 8 - <br /> ' Sequoia Sacrarn(916)9Z 1nto CA 998600 <br /> 34 <br /> O. FAX(916)921-0100 <br /> Analytical <br /> www seguoialabs corn <br /> 41&V <br /> Stratus Environmental Protect ARCO 2168,Stockton,CA <br /> 3330 Cameron Park Drive, Ste 550 ProlectNumber 2168,Stockton,CA Reported <br /> Cameron Park CA,95682 Prosect Manager Jay Johnson 06/21/02 12 35 <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 %REC Limits RPD Limit Notes <br /> Batch 2060169-EPA 5030B(PIT) <br /> Blank(2060169-BLK1) Prepared&Analyzed 06/13/02 _ <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 _ <br /> Surrogate a a a-Trtfluorotoluene 985 100 98 60-140 <br /> LCS(2060169-BSI) Prepared&Analyzed 06/13/02 <br /> Benzene 780 050 ug/l 100 78 70-130 <br /> Toluene 941 050 100 94 70-130 <br /> 0len <br /> ylbenzcne 983 0 50 10 0 98 70-130 <br /> ts(total) 27 2 0 50 300 91 70-130 <br /> Surrogate a a a-Triuorotoluene 100 100 100 60-140 <br /> Matrix Spike(2060169-MSI) Source 5206160-05 Prepared&Analyzed 06/13/02 <br /> Benzene 7 04 050 41 10 0 ND 70 60-140 <br /> Toluene 978 0 50 100 ND 88 60-140 <br /> Ethylbenzene 967 050 100 ND 97 60-140 s <br /> Xylenes(total) 264 0 50 300 ND 88 60-140 <br /> Surrogate a a a-Trifluorotoluene 958 100 96 60-140 <br /> Matrix Spike Dup(2060169-MSDI) Source 5206160-05 Prepared&Analyzed 06/13/02 <br /> Benzene 6 97 050 ug/l 100 ND 70 60-140 1 25 <br /> Toluene 8 80 0 50 100 ND 88 60-140 0 2 25 <br /> Ethylbenzene 9 73 0 50 100 ND 97 60-140 0 6 25 <br /> Xylenes(total) 274 050 30 0 ND_ 91 60-140 _ 4 25 <br /> Surrogate a a a-Trti luorotoluene 9 26 100 98 60-140 <br /> Am <br /> equoia Analytical-Sacramento The i esults in this repot t apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced to its entirety <br /> Page 6 of 12 <br />