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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> OEISNA Industnes Client Project ID Arco 760-93-2A, Lodi, CA Sampled 1/25,26/94 <br /> 3164 Gold Camp Dr, Suite 200 Sample Matrix Soil Received Jan 28, 1994 <br /> Rancho Cordova, CA 95670 Analysis Method EPA 5030/8015/8020 Reported Feb 10, 1994 <br /> Attention David Stavarek First Sample# 401-1265 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I.D. I D I D I D. I D I D <br /> mg/kg 401-1265 401-1266 401-1267 401-1268 401-1269 401-1270 <br /> S-615-B22 S-65-823 S-11 5-623 S-415-823 S-615-823 S-21 5-B24 <br /> Purgeable <br /> Hydrocarbons 1 0 N D 440 N D N D N D N D <br /> Benzene 0 005 N D N D N D N D N D N D <br /> 1 Toluene 0 005 N D N D N D N D N D N D <br /> Ethyl Benzene 0 005 N D N D N D N D N D N D <br /> • Total Xylenes 0 005 N D 067 N D N D N D N D <br /> Chromatogram Pattern -- weathered - - - <br /> Gasoline <br /> Qualrty Control Data <br /> Report Limit Multiplication Factor 1 0 20 1 0 1 0 10 10 <br /> Date Analyzed 2/7/94 2/7 2/7/94 2/8/94 2/8/94 2/8/94 <br /> Instrument Identification HP-1 HP-1 HP-1 HP-1 HP-1 HP-1 <br /> Surrogate Recovery, % 93 96 80 106 102 91 <br /> (OC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL <br /> Linda C Schneider <br /> Project Manager <br /> 4011259 RES <2> <br />