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McCamnbell Analytical, Inc. 1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> Web:www.mccampbell.com E-mail:maw@mccampbelLcom <br /> "When Oaality Coapts' Tele hone:877-252-9262 Fax:925-252-9269 <br /> • WGR Southwest,Inc. Client Project ID: #704.PRI.05; Date Sampled: 05/08/08 <br /> LEARNER;2711 Navy Dr.,Stockton,CA <br /> 315 W.Pine Street,Suite 8 Date Received: 05/08/08 <br /> Lodi,CA 95240 Client Contact: Marda Herbert Date Extracted: 05/08/08 <br /> Client P.O.: Date Analyzed 05/13/08-05/15/08 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline* <br /> Extractionmetbod SW5030B Analyticalmelhods SW8015Cm Work Order: 0805220 <br /> Lab ID Client ID Matrix TPH(g) DF %SS <br /> OOIA S-3-3' S ND 1 82 <br /> 002A S-6-1.5' S ND 1 90 <br /> Reporting Limit for DF=1; W NA NA <br /> ND means not detected at or <br /> above the reporting limit S 1.0 mg/Kg <br /> •water and vapor samples and all TCLP&SPLP extracts are reported in pg/L,soil/sludge/solid samples in mg/kg, wipe samples in pg/wipe, <br /> product/oil/non-aqueous liquid samples in mg/L. <br /> #cluttered chromatogram;sample peak coelutes w/surrogate peak;low surrogate recovery due to matrix interference. <br /> +The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their <br /> interpretation:a)unmodified or weakly modified gasoline is significant;b)heavier gasoline range compounds are significant(aged gasoline?);c) <br /> lighter gasoline range compounds(the most mobile fraction)are significant;d)gasoline range compounds having broad chromatographic peaks <br /> are significant;biologically altered gasoline?;e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent/mineral <br /> spirit?);I)one to a few isolated non-target peaks present;g)strongly aged gasoline or diesel range compounds are significant;h)lighter(ban <br /> water immiscible sheen/product is present;i)liquid sample that contains greater than—1 vol.%sediment;j)reporting limit raised due to high <br /> organic/MTBE content;k)TPH pattern(hat does not appear to be derived from gasoline(aviation gas),m)no recognizable pattern;n) <br /> TPH(g)value derived using a client specified carbon range;o)results are reported on a dry weight basis; )see attached narrative. <br /> • DHS ELAP Certification No 1644 Je— Angela Rydelius,Lab Manager <br />