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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 Plating Date Sampled 04129197 <br /> 1803 West March Lane,Suite A Date Received 04/30/97 <br />' Stockton,CA 95207 Client Contact Bill Little Date Extracted 04130-05101197 <br /> Client P O Date Analyzed 04130-05101197 <br /> Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline*,NN ith Methyl tent-Butyl Ether*&BTEX* <br />' EPA methods 5030,modified 8015 and 8020 or 602 Cali rn)a RW CB SF Bay Re on method GCF1D 5030 <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Etzene n Xylenes Surrogate <br /> t75978 MW-5 W 450,c,a 17 9 8 1 2 23 3 1 108# <br /> T--7 <br /> Reporting Limit unless W 50 ug/L. 5 0 0 5 0 5 0 5 0 5 <br />' otherwise stated,ND <br /> means not detected <br /> above the reporting limit S 10 mg/kg 005 0 005 0 005 0 005 0 005 <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 v.-ith surrogate peak <br /> ' + The following descriptions of the TPH chromatogram are cuisory in nature and McCampbell Analytical is not <br /> responsible for their interpretation a)unmodified or weakly modified gasoline is significant,b)heavier gasoline <br /> range compounds are significant(aged gasoline9),c)lighter gasoline range compounds(the most mobile inaction) <br /> are significant, d) g�asoluie range compounds havuig 6roachromatographic peaks are significant, biologically <br /> ' altered gasolme�, e) TPH pattern thaf does not appear to be derived horn gasoline (9),f) one to a few isolated <br /> peaks present,g)stronglyaged gasoline or diesel range compounds aro significant,h)lighter than water immiscible <br /> • sheen is present,1) liquid sample that contains greater than— 5 vol /o sediment,j) no recognizable pattern <br /> ' DHS Certification No 1644 �}/ Edward Hamilton,Lab Director <br />