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110 2nd Avenue South, #D7, Pacheco, CA 94553-5560 <br />MCCA BELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />h //www mccam bell com E-mail mam@mccampbell com <br />Advanced GeoEnvironmental <br />837 Shaw Road <br />Stockton, CA 95215 <br />Client Project ID Flag City Chevron <br />Date Sampled 04/16/2002 <br />Date Received 04/17/2002 <br />Client Contact Bill Little <br />Date Extracted 04/17/2002 <br />Client P O <br />Date Analyzed 04/17/2002 <br />Lead* <br />EPA analytical methods 6010/200 7 239 2* <br />Lab ID <br />Client ID <br />Matrix <br />Extraction ° <br />Lead* <br />Q/Recovery <br />Surrogte <br />0204288-002 <br />EFFLUENT <br />W <br />TTLC <br />ND <br />N/A <br />Reporting Limit unless otherwise <br />stated, ND means not detected above <br />the reporting limit <br />S <br />TTLC <br />3 0 mg/kg <br />W <br />TTLC <br />0 005 mg/L <br />— <br />STLC,TCLP <br />0 2 mg/L <br />* soil and sludge samples are reported in mg/kg, wipe samples in ug/wipe and water samples and all STLC I SPLP I TCLP extracts in mg/L <br />'Lead is analysed using EPA method 6010 (1CP)for soils, sludges, STLC & TCLP extracts and method 2392 (AA Furnace) for water <br />samples <br />(a DISTLC extractions are performed using STLC methodology except that detonized water is substituted for citric acid buffer as the <br />extraction fluid DISTLC results are not applicable to STLC regulatory limits <br />° EPA extraction methods 1311(TCLP), 3010/3020(water,TTLC), 3040(organic matnces,TTLC), 3050(solids,TTLC), STLC - CA Title 22 <br />" surrogate diluted out of range, N/A means surrogate not applicable to this analysis <br />reporting limit raised due matrix interference <br />t) liquid sample that contains greater than --2 vol % sediment, this sediment is extracted with the liquid, in accordance with EPA <br />methodologies and can significantly effect reported metal concentrations <br />DHS Certification No 1644 ��A_ Edward Hamilton, Lab Director <br />