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110 2nd Avt nue South, #137, Pacheco,CA 94553 <br />' McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br /> Advanced GeoEnvironmental Client Project ID Stockton Plating Date Sampled 12/21/95 <br /> 1803 West March Lane,Ste A Date Received 12/22/95 <br />' Stockton,CA 95207 Client Contact Bob Marty Date Extracted 12/23/95 <br /> Client P O Date Analyzed 12/23/95 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,with BTEX* <br /> EPA methods 5030 modified 8015 and 8020 or 502 California RW CB tSF Ba Re Eon method GCFID 5030 <br /> Lab ID Client ID Matrv. TPH(g)+ Benzene Toluene Ethylben- Xylenes % Rec <br />' zene Surrogate <br /> 59831 MW 1 / 12-21-95 W 51 c ND ND ND ND 99 <br /> 59832 jI MW3 112-21-95 W i 3200 c 1 800 15 190 17 108 <br /> 59833 E MW4/ 12-21-95 W I 70,c ND ND ND ND 97 <br />' 59834 VE 1 / 12-21-95 W 1230,000 a h 41 000 52,000 4900 24,000 100 <br /> I 1� <br /> f <br /> I <br /> Reporting Limit unless other- W 50 ug/L 0 5 0 5 0 5 0 5 <br /> ' wise stated,ND means not de- <br /> tected above the reportmg limit S 1 0 mg/kg 0 005 0 005 0 005 0 005 <br /> *water and vapor samples are reported in ug/L,soil samples in mg/kg,and all TCLP extracts in mg/L <br /> 4 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 weakly modified gasoline is sigriif"icant,b)heavier asolme <br /> range compounds are si ificant(aged gasoline?),c)11 ter gasoline range compounds(the most mobile action) <br /> are slgriificant, d) asolme range compounds havingiroad chromatoggrraphic peaks are significant, biologically <br /> altered gasoline?,e) TPH pattern that does not appear to be derived from gasoline (?),f) one to a few isolated <br /> peaks present,g)strongly aged asolme or diesel range compounds are significant,h)lighter than water immiscible <br /> sheen is present,i)liquid sampe that contains greater than-- 5 vol % sediment,3)no recognizable pattern <br /> DHS Certification No 1644 1''� Edward Hamilton,Lab Directoi <br />