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' McCAMPBELL ANALYTICAL INC 110 2nd Avenue South, #D7, Pacheco, CA 94553 Tele 510-798-1620 Fax 510-798-1622 Advanced GeoEnvironmental Client Project ID Chase Chevrolet- Date Sampled 01/30/96 ' 1803 West March Lane,Ste A Madison Date Received 01/31/96 Stockton,CA 95207 Client Contact Kevin McKibben Date Extracted 01/31/96 ' Client P O Date Analyzed 01/31/96 Gasoline Range(C6-C12)Volatile H}Wrocarbons as Gasoline*,with BTEX* EPA methods 5030 modified 8015 and 8020 or 602 California RW CB SF Ba Re ton method GCFID(5030 Lab ID Client ID Matrix TPH y Benzene Toluene Ethylben- Xylenes % Rec {�) zene Surrogate 61000 MW 111-30-96 W 490 a 10 30 69 120 100 61001 MW4/1-30-96 W 68,b d ND ND ND 14 99 61002 MW5/1-30-96 W 110b ND ND 2 1 40 97 1 I ' Reporting Limit unless other- W 50 ug/L I 05 05 05 05 wise stated,ND means not de- 1 tecled above the reporting limit S 1 0 mg/kg 0 005 0 005 0 005 0 005 *,mater and vapor samples are reported in ug/L,soil samples in mg/kg,and all TCLP extracts in mg/L ' 4 cluttered chromatogram,sample peak coelutes with surrogate peak + The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their interpretation a)unmodified `or weakly modified gasoline is significant,b)heavier gasoline gri ' range compounds are siificant(aged gasoline?),c)lighter gasoline range compounds(the most mobile traction) are significant, d) asolline range compounds having troa chromato aphic peaks are significant, biologically altered gasolme�,e TPH pattern that does not appear to be derived om gasoline (?), 0 one to a few isolated peaks present,g)strongly aged asoline or diesel range compounds are significant,h)lighter than water immiscible sheen is present,i) liquid same e that contains greater than— 5 vol % sediment,l) no recognizable pattern DHS Certification No 1644 �� Edward Hamilton,Lab Director