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I IO 2nd Avenue South,tID7,Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-798 1620 Fax 925 798-1622 <br />' h //www niccarnpliell corn E-mail main@niccatripbell com <br /> • Advanced GeoEnvironmental,Inc Client Project ID Ripon Farm Service Date Sampled 01/02/03 <br /> 837 Shaw Road Date Received 01/03/03 <br /> Stockton,CA 95215 Client Contact Bill Little Date Extracted 01/04/03-01/08/03 <br /> Client P O Date Analyzed 01/04/03-01/08/03 <br />' Gasoline Range(C6-02)Volatile Hydrocarbons as Gasoline* <br /> Extraction method SW5030B Analytical methods SW8015Cm Work Order 0301015 <br />' Lab M Client lb Matrix TPH(g) DF %SS <br /> 001A MW1/01-02-03 W ND 1 105 <br /> t002A MW2/01-02-03 W 220,a 1 117 <br /> 003A MW3/01-02-03 W 160,a 1 107 <br />' 004A MW4/01-02-03 W 280,a 1 117 <br /> 005A MW5/01-02-03 W ND 1 104 <br /> Reporting Limit for DF=1, W 50 µg2 <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 mglkg,wipe samples in pg/wipe,and TCLP extracts in Rg/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 significant(aged gasoline9),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 gasolmel,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) m)no recognizable pattern <br /> . DHS Certification No 1644 Edward Hamilton,Lab Director <br /> 1 <br />