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CASTLE ANALYTICAL LABORATORY E, <br /> Environmental Testing Services 2333.Shuttle Drive Atwater, CA 95301' Phone: (209)3$4 2930 <br /> Certificate No.2480 Fax: (209)384-1507 <br /> ERay <br /> hnics, Inc. Client Project ID: 1218.2 Method:LUFTIEP4 8D15B <br /> Client Project Name:Ewing(Broadway) lnstrument,ID:HP-GC1 <br /> 354 Reference Number:8858 Extracted:01-11-46 <br /> now Matrix:WaterAnalyzed:Qi-13-06 <br /> Analyst:Jim PhillipsReported:01-20-06 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE TPH-Diesel <br /> _ li <br /> Spike Concentration: 250 <br /> Units: ug/L <br /> Batch#: TPHDW-1116 <br />` Method Blank: ND s' <br /> LCSA%Recovery: 96.4% <br /> LCSB%Recovery: 97.1 <br /> Control Limits: 55-130 <br /> Relative%Difference: 6.801 <br /> MS/MSD Batch#: TPHDW-1116 <br /> MS%Recovery: See Note <br /> MSD%Recovery: See Note <br /> Relative%Difference: See Note <br /> Note:Insufficient sample material to prepare MSIMSD samples. LCS samples prepared in duplicate. <br /> The LCS(Laboratory Check Sample)is a control sample of known,interferent free matrix that is fortified with representative analytes and <br /> analyzed using the same reagents,preparation and analytical methods employed for the samples. The LCS%recovery is used for validation 4 <br /> of sample batch results. Due to matrix effects,the QC limits and recoveries for MSIMSD's are advisory only and are not used to accept or <br /> reject batch results. <br /> APPROVED BY: <br /> James C.Phllf W /tab ratory Director or <br /> Clan J. Cone/Laboratory Manager <br />