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U1J/Ut)/YUUt U1:3U '20'jb38:191hb JL ANALY11CAL 1IAUE I I I 15 <br /> 0 <br /> North Coast Laboratories, Ltd. Date- 23•Aiig-2007 <br /> CLIENT: T L Analytical Services <br /> Project: 8-859 f CASE NARRATIVE <br /> Lab Order: P108353 <br /> TPH as Diesel: <br /> The surrogate for sample 8-859 could not be quantified due to a sample dilution. <br /> BTEK <br /> The laboratory qpntrol,s&rnple/laboratory control sample duplicate(LCS/JCSD)recoveries were above <br /> the upper acceptance limit for MTBE and m,p-xylene. These recoveries indicate that the sample results <br /> for these analytes may be erroneously high. <br /> TPH as Gasoline: <br /> The gasoline value for sample 8-959 includes the reported gasoline components in addition to other <br /> peaks in the gas .11 .-._sample also does noijimsent a peak pattern consistent with that of <br /> gasoline. The peaks elute towards the end of the gasoline range. In our judgement the material appears <br /> to be a product heavier than gasoline. Due to the differences in the purging efficiency of these heavier <br /> materials the results may be variable. The reported result represents the amount of material in the <br /> gasoline range. <br /> NORTH COAST LABORMORIES <br /> 56w West End Road - Arralm,California 95521-9202 - 707-822.4649 - FAX 707-822-6831 <br />