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''IBCASTLE 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 GeoEnvironmental, Inc. Client Project ID: Grewal's Market Method:TPH-Diesel <br /> ' of Northern California Reference Number:2813 <br /> Instrument ID: HP-GC1 <br /> 4005 North Wilson Way Matrix: Soil Prepared: 2-8-00 <br /> Stockton,CA 95205 Analyst: Clan Cone Analyzed: 2-10-00 <br /> Attn:Tim Cuellar Reported: 2-16-00 <br /> ' QUALITY CONTROL DATA REPORT <br /> ANALYTE TPH-Diesel <br /> Spike Concentration: 5.0 <br /> Units: mg/kg <br /> ' LCS Batch#: TPHD-2080 <br /> ' LCS% Recovery: 143% <br /> Control Limits: 60-130% <br /> 'OlvIS/MSD Batch#: TPHD-2080 <br /> ISIS% Recovery: 105% <br /> ' lASD%Recovery: 91.2% <br /> Relative% Difference: 12.2% <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 QC limits and recoveries for MSIMSD's are advisory only and are not used to accept or <br /> reject batch results. <br /> ANALYST:. APPROVED BY: <br /> Clad J. Cone Jams . Phillips <br /> En ironmental Lab Director <br />