Laserfiche WebLink
i <br /> I 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 /> Advanced GeoEnvironmental Inc Client Project 117 Three B's Truck Plaza Method EPA 5030/8015M,8020 <br /> of Northern California Reference Number 2167 Instrument ID Var-GC1 <br /> 4005 North Wilson Way Matrix Soil Prepared 4-2-99 <br /> Stockton, CA 95205 Analyst Clan Cone Analyzed 4-2-99 <br /> Attn Tim Cuellar Reported 4-1499 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Gasoline MTBE Benzene Toluene Ethyl Benzene Total Xylenes <br /> Spike Concentration 2 20 42 1 30 1 150 36 5 179 <br /> Units mg/kg ug/kg ug/kg uglkg ug/kg ug/kg <br /> LCS Batch # VS-4029 VS-4029 VS-4029 VS-4029 VS-4029 VS-4029 <br /> LCS % Recovery 95 7% 974% 85 8% 938% 97 6% 92 3% <br /> Surrogate Recovery 91 2% 884% 884% 884% 884% 684% <br /> Control Limits 70-130 % 70-130 % 70-130 % 70-130 % 70-130 % 70 130 % <br /> MS/MSD Batch # VS-4029 VS 4029 VS-4029 VS-4029 VS-4029 VS 4029 <br /> MS % Recovery 85 1% 98 7% 82 5% 880% 89 1% 83 5% <br /> Surrogate Recovery 86 7% 843% 843% 843% 843% 843% <br /> MSD % Recovery 833% 894% 82 0% 883% 88 3% 83 2% <br /> ISurrogate Recovery 892% 867% 867% 867% 86 7% 86 7% <br /> Relative % Difference 2 15% 1000/0 0665% 0 321% 0 81 5% 0389% <br /> I Methanol Blank NO ND ND ND ND ND <br /> Surrogate Recovery 89 3% 887% 88 7% 88 7% 88 7% 887% <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 /> I 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 limas and recoveries for MS/MSD s are advisory only and are not used to accept or <br /> refect batch results <br /> ANALYST APPROVED BY <br /> Clan J Con J es hr rps <br /> Environmental Lab Director <br />