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I110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> 4 Mccampbell Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br /> h //www mcc bell com E-mail inatri@mccampbell coin <br /> IAdvanced GeoEnvirownental,Inc Client Project ID West Clay Date Sampled 12/26/02 <br /> • 837 Shaw Road Date Received 12/27/02 <br /> IStockton,CA 95215 Client Contact Paul Dotson Date Extracted 12/2$/02-01101/03 <br /> Client P O Date Analyzed 12/28/02-01/01/03 <br /> Gasoline Range(C&C12) Volatile Hydrocarbons as Gasoline* <br /> Extraction method SW5030B Analytical methods SW8021B18015Cm Work Order 0212433 <br /> Lab ID Client ID Matnx TPH(g) DF %SS <br /> O17A MW-13A W ND 1 103 <br />' 018A MW-13B W ND 1 104 <br /> 019A MW-14A W ND,i 1 105 <br />' 020A MW-14B W ND,i 1 941 <br /> 021A MW-15A W ND l 109 <br />' 022A MW-15B W ND,i l 109 <br /> 023A EW-1 W 14,000,a 10 ---# <br /> I024A EW-2 W 590,a 1 114 <br /> I ' <br /> I E <br /> Reporting Limit for DF=1, W 50 lag/L <br />' ND means not detected at or <br /> above the reporting limit S NA NA <br /> *water and vapor samples are reported inµg/L,soil and sludge samples in mg/kg,wipe samples in}4g/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 McCamphell Analytical is not responsible for their interpretation a) <br /> unmodified or weakly modified gasoline is significant,b)heavier gasoline range compounds are signifrcant(aged gasolme2),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?),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 gasohne(aviation gas) m)no recognizable pattem <br /> • DHS Certification No 1644 Edward Hamilton, Lab Director <br /> I <br /> I <br />