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110 2nd Avenue South #D7,Pacheco CA 94553-5560 <br /> McCampbell .Analytical znc Telephone 925-798-1620 Fax 925-798-1622 <br /> httpJ/www mec bell com E-mad main rricca bell com <br /> ' Advanced GeoEnviromnental,Inc Client Project ID Guardino +Crawford Date Sampled 12/11/02 <br /> 837 Shaw Road Date Received 12/12/02 <br /> 6 <br /> Client Contact Paul Dotson Date Extracted 12115/02-12116102 <br /> Stockton, CA 95215 <br /> Client O Date Analyzed 12115/02-12/16/02 <br /> Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Extraction method SW5030B Analytical methods SW802113/80t SCm Work Order 0212215 <br /> t <br /> Lab Cheat m Matrix TPH(g) MTBE Benzene Toluene Ethyibenzene Xylenes DF %SS <br /> 001A MW1 W 33,000,4 ND<1000 4500 5000 780 4200 200 101 <br /> ' 002A MW2 W 540 a ND 86 47 28 130 1 992 <br /> 003A MW3 W ND ND ND ND ND ND 1 104 <br /> ' 004A MW4 W ND ND ND ND ND ND l 103 <br /> 005A MW5 W ND ND ND ND ND ND 1 102 <br /> ' 006A M W6 W ND ND ND ND ND ND k ]03 <br /> Reporting Lmut for DF=1 W 50 50 05 05 O S t] 5 +1M9//l <br /> ND means not detected at or <br /> above the repotting tirrnt S NA NA NA NA NA NA <br /> '"water and vapor samples are reported m gg/L,soil and sludge samples in mg/kg,wipe samples to 49/wipe,and TCLP extracts inµg/L <br />' #cluttered chromatogram,sample peak coclutes with surrogate peak <br /> +The following desenpttons of the TPH chromatogram are cursory m nature and McCampbell Analytical is not responsible for their interpretation a) <br /> unmodified or weakly modified gasoline is significant,b)heavier gasoline range compounds are signiftcant(aged gasoline?),c)lighter gasoline range <br />' compounds(the most mobile fraction)are significant,d)gasoline range compounds having broad chromatographic peaks are significant,biologically <br /> altered gasoline? e)TPH pattern that does not appear to be denved from gasoline(stoddard solvent/mineral spirit?),t)one to a few isolated non-target <br /> peaks present,g)strongly aged gasoline or diesel range compounds are significant,h)lighter than water immiscible sheen/product is present 1)liquid <br /> sample that contains greater than—2 vol %sediment,j)reporting limit raised due to high MTBE content,k)TPH pattern that does not appear to be <br /> derived from gasoline(aviation gas) m)no recognizable pattern <br /> • DHS Certification No 1644 Edward Hamilton,Lab Director <br /> 1 <br />