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' McCAMPBELL ANALYTICAL INC 110 2nd Avenue South, #D7, Pacheco, CA 94553 <br /> Tele 510-798-1620 Fax 510-798-1622 <br />' Advanced GeoEnvironmental, Inc Client Project ID Stockton Plating Date Sampled 04/24/97 <br /> 1803 West March Lane, Suite A Date Received 04/25/97 <br />' Stockton, CA 95207 Client Contact Bill Little Date Extracted 04/25-04/29197 <br /> Client P O Date Analyzed 04125-04/29/97 <br /> Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline*,with AIeth-11 tert-Butyl Ether*&BTEX* <br /> EPA methods 5030 modified 8015 and 8020 or 602 California RW CH(SF DaVRe ion)method GCFID 5030 <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethylben-' Xylenes % Rec I zene (Surrogate <br /> 75882 MW5-30 S ND SID ND � ND ND ND 102 <br />' 75883 MW5-40 S ND ND � ND ND ND ND 98 <br /> i <br /> --------------------------- <br /> I <br /> I <br /> o I <br /> I I <br /> 1 <br /> 1 � � <br /> I <br />' Reporting Limit unless W � 50 uglL 50 05 05 05 05 <br /> 1 <br /> otherwise stated,ND <br /> means not detected <br /> above the reporting limit S 10 mg/kg 005 0 005 L 0 005 0 005 0 005 <br /> I <br /> *«ater and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,and all TCLP extracts in mg/L <br /> T cluttered chromatogram, sample peak coelutes Nvith surrogate peak <br /> I+ The following descriptions of the TPH chromatop-ram are cursory in nature and McCampbell Analytical is not <br /> responsible for their interpretation a) unmodified or weakly modified gasoline is significant,b) hea�7er gasoline <br /> range compounds are si ificant(aged gasoline?),c)lighter gasoline range compounds(the most mobile action) <br /> are significant, d) gasoline range compounds hating broad chromatographic peaks are significant, biologically <br /> altered gasoline?,e) TPH pattern that does not appear to be derived from gasoline (9), f) one to a few isolated <br /> gged asoline or diesel range compounds are significant,h)lighter than water immiscible <br /> sheen is present, i) liquid sample that contains greater than - 5 vol % sediment,j) no recognizable pattern <br /> peaks present,g)strongI <br /> DHS Certification No 1644 / Edward Hamilton,Lab Director <br />