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09/05/2007 01:30 2095383966 JL ANALYTICAL PAGE 04/16 <br /> is 0 <br /> Date- 23-Aug-2007 <br /> North Coast Laboratories, Ltd. <br /> --- <br /> CLIENT: I L Analytical SCIViccs <br /> Project: 8-858 CASE NARRATIVE <br /> Lab Order: 0708352 <br /> TPH as Diesel: <br /> The surrogate for sample 8.858 could not be quantified due to a sample dilution. <br /> BTEX: control sarIaple duplicate(LCSILCSD)recoveries were above <br /> The laboratory control SaMple/laboratory <br /> the upper acceptance-limit-fof-MTBE and m,p-xylene. These recoveries indicate that the sample results <br /> for these analytes may be erroneously high. <br /> Sample 8-858 was reported as not detected(ND)with a dilution for MTBE and benzene due to matrix <br /> interference. <br /> TPH as Gasoline: <br /> The gasoline value for sample 8-858 includes the reported gasoline components in addition to other <br /> peaks in the gasoline range. This sample also does not present 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 heavi=ihaa_gawline. Due to the differences in the purging efficiency of these heavier <br /> materials the results may be variable. The reported result represent-,the amount of material in the <br /> gasoline range. <br /> NORTH COAST LABORATORIES <br /> yf;80 West End Road - Arcala,California 95521-9202 - 707.822-4649 - FAX 707-822-6831 <br />