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i <br /> t <br /> CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive, Atwater, CA 95301 Phone: (209) 384-2930 <br /> Certificate #2079 Fax: (2091 384-1507 <br /> Krazan & Associates, Inc. Client Project ID: 034-99039 Method: TPH-Diesel <br /> 215 W. Dakota Avenue Reference Number: 20E 2 instrument ID: HP-GC1 <br /> Clovis, CA 93612 Matrix: Soil Prepared: 2-22-99 <br /> Attn: Bruce Myers Analyst: Ciari Cone Analyzed: 2-22-99 <br /> Reported: 2-26-99 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE TPH-Diesel <br /> Spike Concentration: 5.0 <br /> Units: mg/kg <br /> LCS Batch #: TPHD-2229 <br /> LCS % Recovery: 89.4% <br /> Control Limits: 60-130 % <br /> MSIMSD Batch #: TPHD-2229 <br /> MS % Recovery: 56.3% <br /> MSD % Recovery: 64.9% <br /> Relative % Difference: 14.1% <br /> Please Note: <br /> -The LCS (Laboratory Check Sample) is a control sample of known, inleiferent 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 <br /> of sample batch results. Due to matrix effects, the QC limits and recoveries for MS/MSD's are advisory only and are not used to accept or <br /> reject batch results. <br /> 1 <br /> ;;::, <br /> ANALYST: APP 10VED BY: <br /> Clari J. Cone/ JameG.4i7 -Phillips <br /> pranmental Lab Director <br />