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]li 2n1 Avenue South,817 Pacheco CA 94553 SSii <br /> 74McCampbell Analytical Inc Telephone 925-798-1620 Fax 925 798-1622 <br /> http//www mcca belt com E mail inaT(2EcEMbell cam <br /> Advanced GeoEnvironmental,Inc Client Project ID Manteca City Corp Date Sampled 02/27/03 <br /> Yard' <br /> 837 Shaw Road Date Received 02/28/03 <br /> Client Contact Brian Millman Date Extracted 03/04/03-03/05/03 <br /> Stockton,CA 95215 <br /> Client P O Date Analyzed 03104/03-03105/03 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline <br /> Extraction method SW5030B Analytical methods 8015Cm Work Order 0302391 <br />' Lab 11) Client ID Matrix TPH(g) DF %SS <br /> OOIA MW1 W ND 1 108 <br />' 002A MW2 W ND 1 106 <br /> 003A MW3 W ND 1 108 <br />' 004A MW4 W ND 1 108 <br /> 005A MW5 W ND 1 112 <br />' 006A MW6 W ND 1 114 <br /> 007A MW7 W ND,i 1 112 <br />' 008A MW8 W ND,i 1 107 <br /> 009A MW9 W ND,i 1 110 <br /> OIOA MW10 W ND,i 1 109 <br /> I <br /> i <br /> I <br /> 1 <br /> Reporting Limit for DF=1, W 50 µg/L <br />' ND means not detected at or <br /> above the reporting limit S NA NA <br /> *water and vapor samples are reported in gg/L soil and sludge samples in mg/kg,wipe samples inµg/wipe,and TCLP extracts inµg/L <br /> I <br />' #cluttered chromatogram,sample peak coelates 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 skgnificant(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 gasoline? e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent I 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 Rydelius, Lab Manager <br />