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110 2nd Avenue South,#D7,Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc I Telephone 925-798-1620 Fax 925 798 ]622 <br /> A# It /lwww mpcampbell com Email ma ca bell com <br /> Fdvanced GeoEnviromnental, Inc Client Project ID ChaseNan Buren Date Sampled 02/21/03 <br /> 837 Shaw Road Date Received 02/25/03 <br /> Client Contact Paul Dotson Date Extracted 02125103-02126103 <br /> Stockton,CA 95215 <br /> Client P O Date Analyzed 02125103-02126103 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasolene with BTEX and MTBE* <br /> Exiractronmethod SW5030B Analytical methods SW8021B/80I5Cm Work Order 0302327 <br /> Lab 1D Client ID Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> OOIA MW3/02-21-03 W 200,000,a ND<1000 5400 57,000 5100 29,000 200 103 <br /> I002A MW6/02-21-03 W ND ND ND ND ND ND 1 988 <br /> 003A MW9/02-21-03 W 6100 b,m ND<25 7 3 64 380 1500 5 944 <br /> I004A MW1O/02-21-03 W ND ND ND ND ND ND 1 999 <br /> 005A MW22/02-21-03 W 65,a ND 11 ND 46 4 6 1 102 <br /> I <br /> Repomng Limet for DF=1 W SO 5 0 O S O S 05 05 1 µg/I <br /> ND means not detected at or <br /> above the reporting hmit S NA NA NA NA NA NA 1 mg/ICg <br /> "water and vapor samples are reported inµg/L,soil and sludge samples in mg/kg,wipe samples in jig/wipe,and TCLP extracts inµg/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 responsible for their interpretation a) <br /> unmodified or weakly modified gasohne is significant,b)heavier gasoline range compounds are s,gmficant(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 gasohne9,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent/mineral spirit?),f)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,i)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 Angela Rydehus, Lab Manager <br />