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i <br /> • I 819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA 95834 <br /> -9600 <br /> a- ) (9 3 6)921-9600 <br /> FAX(916)921-0100 <br /> Analytical www sequoialabs corn <br /> 41REV <br /> Stratus Environmental Project. ARCO 2186,Stockton,CA <br /> 3330 Cameron Park Drive,Ste 550 Project Number 2186, Stockton,CA Reported <br /> Cameron Park CA,95682 Project Manager Jay Johnson 06/25/02 14 07 <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 2060277-EPA 5030E (PIT <br /> Blank(2060277-,BLKI) Prepared&Analyzed 06/21/02 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethyibenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate a a a-Trifluorotoluene 103 100 103 60-140 <br /> LCS(2060277-BSI) Prepared&Analyzed 06/21/02 _ <br /> Benzene 899 050 ug/l 100 90 70-130 <br /> Toluene 939 050 100 94 70-130 <br /> ylbenzene 9 26 0 50 100 93 70-130 <br /> lenes(total) 287 050 30 0 96 70-130 <br /> Surrogate a a a-Trifluorotoluene 966 100 97 60-140 <br /> Matrix Spike(2060277-MS1) Source 5206259-08 Prepared&Analyzed 06/21/02 <br /> Benzene 974 0 50 ug/l 100 ND 96 60-140 <br /> Toluene 995 0 50 100 ND 700 60-140 <br /> Ethylbenzene 100 050 10 0 ND 100 60-140 <br /> Xylenes(total) 31 1 0 50 300 ND 104 60-140 <br /> Surrogate a a a-Trifluorotoluene 999 100 100 60-140 <br /> Matrix Spike Du p(206_0277-MSDI) Source 5206259-08 Prepared&Analyzed 06/21/02 <br /> Benzene 102 0 50 ug/1 100 ND 100 60-140 5 25 <br /> Toluene 103 050 l b 0 ND 103 60-140 3 25 <br /> Ethylbenzene 106 0 50 100 ND 106 60-140 6 25 <br /> Xylenes(total) 327 0 50 300 ND 109 60 140 5 25 <br /> Surrogate a a a-Trifluorotoluene 101 J00 101 60-140 <br /> equota 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 reproducer)in its entirety <br /> Page 9 of 13 <br />