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SCASTLE <br /> ANALYTICAL LABORATORY <br /> ' Environmental Testing Services 2333 Shuttle Drive, Atwater, CA 95301 Phone: (209) 384-2930 <br /> Certificate #2079 Fax: (209) 384-1507 <br /> ' Advanced (3eoEnvironmental, Inc. Client Project ID: Grewals Market Method: TPH-diesel <br /> of Northern California Reference Number: 2331 Instrument ID: HP-GC1 <br /> 4005 North Wilson Way Matrix: Soil Prepared: 6.30-99 <br /> Stockton, CA 95205 Analyst: Clari Cone Analyzed: 7-1-99 <br /> Attn: Tim Cuellar Reported: 7-6-99 <br /> ' QUALITY CONTROL DATA REPORT <br /> ' ANALYTE TPH-Diesel <br /> Spike Concentration: 5.0 <br /> y' Units: mg/kg <br /> i_ <br /> LCS Batch #: TPHD-6309 <br /> LCS % Recovery: 77.6% <br /> Control Limits: 60-130 % <br /> MS/MSD Batch #: TPHD-6309 <br />..,;' MS % Recovery: 71.5% <br /> MSD % Recovery: 55.2% <br /> ' Relative % Difference: 23.4% <br /> Please Note: <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 <br /> of sample batch results.' Due to matrix effects, the DC limits and recoveries for MSlMSD's are advisory only and are not used to accept or <br /> ' reject batch results. <br /> ANALYST: �/ p� APPROVED 6Y: / <br /> Clary J. Cone J es C.-Phillips <br />?, eetnvironmental Lab Director <br /> iw <br /> J <br />