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110 2nd Avenue South,ND7,Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-796-1620 Fax 925-798-1622 <br /> http//www mccampbell com E-mail main@mccanpbell com <br />' Advanced GeoEnvironmental,Inc Client Project ID West Clay Date Sampled 12/26/02 <br /> 837 Shaw Road Date Received 12/27/02 <br />' Stockton, CA 95215 Client Contact Paul Dotson Date Extracted 12/28102-01/01/03 <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 SW8021B/8015Cm Work Order 0212433 <br />' Lab 11) Client ID Matnx TPH(g) DP %SS <br /> OOIA MW-1 W 470,a 1 103 <br />' 002A MW-2 W 2300,a 33 100 <br /> 003A MW-3 W ND 1 100 <br />' 004A MW-4 W ND 1 101 <br /> 005A MW-5 W ND 1 104 <br />' 006A MW-6A W ND 1 103 <br /> 007A MW-68 W ND I 102 <br />' 008A MW-7 W ND 1 104 <br /> 009A MW-8A W ND 1 106 <br />' Ol OA MW-8B W ND 1 103 <br /> 011A MW-9 W ND 1 103 <br />' 012A MW-10 W 700 a 1 114 <br /> 013A MW-11A W ND 1 101 <br />' 014A MW-l1B W ND 1 101 <br /> 015A MW-12A W ND 1 102 <br />' 016A MW-12B W ND 1 105 <br /> Reporting Limit for DF=1, W 50 4g/1, <br />' ND means not detected at or <br /> above the reporting limit S NA NA <br /> *water and vapor samples are reported in pg/L,soil and sludge samples in mg/kg,wipe samples in pg/wipe,and TCLP extracts in gg/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 gasoline is significant,b)heavier gasoline range compounds are signiftcant(aged gasoline7),c)lighter gasoline range <br />' compounds(the most mobile faction)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/mineral spint9),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) in)no recognizable pattern <br /> iDHS Certification No 1644 Edward Hamilton, Lab Director <br /> 1 *_ <br />