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' 110 2nd Avenue South #D7,Pacheco CA 94553-5560 <br /> 14 <br /> McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-796-1622 <br /> http I/www mccampbell com E mail matnQniccampbell com <br />' Advanced GeoEnvironmental,Inc Client Project ID West Clay Prop Date Sampled 05/28/02 <br /> 837 Shaw Road Date Received 05/29/02 <br />' Stockton,CA 95215 Client Contact Paul Dotson Date Extracted 05/30/02-06/03/02 <br /> Client P O Date Analyzed 05/30/02-06/03/02 <br />' Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> F.t.-lionmethod SW50308 Analytical methods SW8021B/8015Cm Work Order 0205399 <br />' Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 017A MW13A/05-28-02 W ND 19 ND ND ND ND 1 112 <br />' 018A MW13B/05-2$-02 W ND 26 ND ND ND ND 1 104 <br /> 019A EW-1/05-28-02 W 31,000,a ND<500 1200 3900 1800 7200 100 102 <br />' 020A EW-2/05-28-02 W 110,a ND 5 6 059 90 8 4 1 103 <br /> 1 <br /> I <br /> I <br /> Reporting Limit for DF=1, W 50 5 0 05 0 5 0 5 0 5 ug/L <br /> ND means not detected i t or S 10 005 0 005 0 005 0 005 0 005 m <br /> above the reporting limitg/Kg <br /> "water and vapor samples are reported in ug/L.,soil and sludge samples in mg/kg,wipe samples in ug/wipe,and TCLP extracts in ug/L <br /> DF=dilution factor <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 gasoline is significant,b)heavier gasoline range compounds are significant(aged gasohne'y),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 derived from gasoline(stoddard solvent),f)one to a few isolated non-target peaks present, <br /> g)strongly aged gasoline or diesel range compounds are significant,h)lighter than water inu nscible sheen/product is present,i)liquid sample that <br /> contains greater than—2 vol %sediment,l)no recognizable pattern k)TPH pattern that does not appear to be derived from gasoline(aviation gas) <br /> • DHS Certification No 1644 Edward Hamilton,Lab Director <br />