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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord,California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> ,..GR.�n ` • - t r } % 4p e a J+ ` <br /> tix Associates F v W k. C W ti t G4G r ' GJ3`n <br /> Chen Project ID Arco#X09 - -1 /Tracy " Sampled Jul 2i `1 <br /> 1855 Gateway Blvd . Ste 770 Sample Matrix Sod Received Jul 21, 1993, <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Aug 3, 1993 <br /> Attention Paul Supple First Sample # 307-1024 Y <br /> J ,..k , w. n r r r , r t r rr v.,r;°S,".`x c,'ry...{. ry r 4 Y-0• w ..r .. ..'°'`v°:r r. <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br />' Reporting Sample Sample <br /> Analyte Limit LD I D. <br /> mg/kg 307-1024 307-1025 <br /> SW-7 SW-8 <br /> Purgeable <br />' Hydrocarbons 10 N D 2,600 <br /> Benzene 0 005 0 018 11 <br /> Toluene 0 005 N D 110 <br /> 1 <br /> Ethyl Benzene 0 005 00050 58 <br /> i <br /> Total Xylenes 0 005 017 340 <br />'Chromatogram Pattern Gasoline <br /> 1 <br /> Quality Control Data <br /> i((0, <br /> eport Limit Multiplication Factor 10 100 <br /> ate Analyzed 7/29/93 7/28/93 <br /> strument Identification HP-4 HP-2 <br /> urrogate Recovery, % 95 92 <br /> CC Limits = 70-130%) <br /> turgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> EQUOIA AN LYTICAL <br /> enneth K F Lee <br /> Laboratory Director <br />' 3071018 ROU ¢2> <br />