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Blvd North Ste D <br /> Sequoia 1455 Mci)owePetaluma CA 94954 <br /> (707) 792-1865 ' <br /> Analytical FAX(707) 792-0342 <br /> Delta Environmental Consultants Project Exxon Sampled 8/26/99 to 8/27199 <br /> 3164 Gold Camp Dr,Suite 200 Project Number 7-0137/D099-865 Received 8/30/99 <br /> Rancho Cordova,CA 95670 Project Manager Jim Brownell Reported 9/15199 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* ' <br /> Batch 9090018 Date Prepared 911/99 Extraction Method EPA 5030 sods McOH <br /> Blank 9090018-BLKI <br /> Gasoline 9/1/99 ND mg/kg 200 ' <br /> Benzene ND 0100 <br /> Toluene ND 0100 <br /> Ethylbenzene ND 0100 <br /> Xylenes(total) ND 0200 <br /> Surrogate a a a-Tris luorotoluene 300 302 650435 101 <br /> Surrogate 4-Bromofluorobenzene 300 279 650-135 930 <br /> LCS 9090018-BS1 ' <br /> Benzene 9/1/99 100 997 mg/kg 65 0-135 997 <br /> Toluene 100 100 65 0-135 100 <br /> Ethylbenzene 100 947 65 0-135 947 <br /> Xylenes(total) _ 300 _ 300 65 0-135 100 <br /> Surrogate a a a-Trifluorotoluene 300 316 650-135 105 <br /> Matrix Spike 9090018-MS1 P908656-01 <br /> Benzene 9/1/99 100 1 18 982 mg/kg 650-135 864 <br /> Toluene 100 409 345 650-135 -64 9 ' <br /> Ethylbenzene 100 270 25 4 65 0-135 -16 9 <br /> Xylenes(total) _ "_ 300 189 163 650-135 _ 9 <br /> Surrogate a a a-Tnfluorotoluene 300 354 650-135 118 <br /> Matrix Spike Dup 9090018-MSDI P908656-01 ' <br /> Benzene 9/1/99 100 1 18 102 mg/kg 650-135 902 200 430 <br /> Toluene 100 409 33 8 650-135 -71 200 9 ' <br /> Ethylbenzene 100 270 252 650-135 -18 200 9 <br /> Xylenes(total)_ _ _ 300 189 162 650-135 -90 20 0 _ _ _9_ <br /> Surrogate aaa-Trifluorotoluene 300 369 650-135 123 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 15 of 20 <br />