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110 2nd Avenue South,#D7, Pacheco, CA 94553 <br /> McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br /> Advanced GeoEnvironmental,Inc Client Project ID Stockton Platmg 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 04125-04/29/97 <br />' Client P O Date Analyzed 04125-04129197 <br /> Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasohne*, vnth Methyl tert-Buhl Ether*&BTEX* <br /> EPA methods 5030 modified 8015 and 8020 or 602 Cahforma RW CB SF Bay Region)method GCF1D 5030 <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Etzene n Xylenes Surrogate <br />' 75882 MW5-30 S ND ND ND ND ND ND :102 <br /> 75883 MW5-40 S ND ND ND ND ND ND 98 <br /> 1 <br /> Reporting Limit unless W 50 ug/L 50 05 05 05 05 <br /> ' otherwise stated,ND <br /> means not detected <br /> 1 0 mg/kg 0 05 0 005 0 005 0 005 0 005 <br /> above the reporting limit S <br /> *water and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,and all TCLP extracts in mg/L <br /> cluttered chromatogram,sample peak coelutes with surrogate peak <br /> ' + The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not <br /> responsible for their interpretation a) unmodified or rveakly modified gasoline is si�rriiificant,b)heavier gasoline <br /> range compounds are significant(aged gasoline 9),c)It ter gasoline range compounds(the most mobile fraction)) <br /> are significant, d) asohne range compounds having broad chromatographic peaks are si one to a,bio isolated <br /> altered gasohne9, eg) TPH pattern that does not appear to be derived fiom gasoline ( ),f) <br /> ' peaks present,g)stronglyagedg /a asoline or diesel range compounds are significant,h)lighter <br /> than <br /> j n water immiscible i cible <br /> sheen is present,i) liquid sample that contains greater than, 5 vol sediment,I) n recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />