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i 10 Second Avenue South,#137,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC. Telephone:925-798-1620 Fax:925-798-1622 <br /> hap://www.mccampbell.com E-mail:main@mccampbell.com <br /> � <br /> Advanced GeoEnvironmental <br /> Client Project ID.Elkhorn CC; 1050 Date Sampled: 07/07/98 <br /> Elkhorn Drive Date Received: 07/08/98 <br /> 4005 North Wilson Way <br /> Stockton,CA 95205 Client Contact:Bill Little Date Extracted:07/08-07/10/98 <br /> Client P.O: Date Analyzed:07108-07110198 <br /> Oxygenated Volatile Organics By GC/MS <br /> EPA method 6260 modified <br /> Lab ID 91816 91817 91818 91819 <br /> Reporting Limit <br /> Client ID MW-1 MW-2 MW-3 MW4 <br /> Matrix W W W W S W <br /> Compound Concentration* uglkg ug/LL <br /> Di-isopropyl Ether(DIPE) ND ND ND ND 5.0 1.0 <br /> Ethyl tert-Butyl Ether(ETBE) ND ND ND ND 5.0 1.0 <br /> Methyl-tert Butyl Ether(MTBE) ND 11 ND ND 5.0 1.0 <br /> tert-Amyl Methyl Ether(TAME) ND ND ND ND 5.0 1.0 <br /> tert-Butanol ND ND ND ND 25 5.0 <br /> N 11 <br /> r. <br /> Surrogate Recoveries(%) <br /> Dibromofluoromethane 102 109 108 102 <br /> Comments: <br /> *water samples are reported in ug/L,soil and sludge samples in ug/kg,wipes in ug/wipe and all TCLP 1 STLC/SPLP extracts in ug/L <br /> ND means not detected above the reporting limit;NIA means surrogate not applicable to this analysis <br /> f (h)lighter than water immiscible sheen is present;(i)liquid sample that contains greater than-5 vol.%sediment;(j)sample diluted due to <br /> high organic content <br /> L.: <br /> DHS Certification No. 1644 rr Edward Hamilton,Lab Director <br />