Laserfiche WebLink
' CASTLE 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 Three B s Truck Plaza Method EPA 503DI8015M,8020 <br />' of Northern California Reference Number 2173 Instrument ID Var-GC1 <br /> 4005 North Wilson Way Matrix Water Prepared 4-7-99 <br /> Stockton, CA 95205 Analyst Jim Phillips Analyzed 4-7-99 <br /> Attn Tim Cuellar Reported 4-16 99 <br /> I <br /> QUALITY CONTROL DATA REPORT <br /> I <br />' ANALYTE Gasoline MTBE Benzene Toluene Ethyl Benzene Total Xylenes <br /> Spike Concentration 110 222 1 34 7 82 1 84 948 <br />' Units uglL ug/L uglL uglL uglL ug/L <br /> LCS Batch # VW-4079 VW 4079 VW-4079 VW 4079 VW-4079 VW-4079 <br />' LCS % Recovery 89 1% 970% 104% 948% 100% 904% <br /> Surrogate Recovery 97 0% 982% 982% 982% 982% 98 2% <br /> Control Limits 70-130 % 70-130 % 70-130 % 70-130 % 70 130 % 70130 % <br /> MS/MSD Batch # VW 4079 VW 4079 VW-4079 VW-4079 VW-4079 VW-4079 <br /> Spike Concentration 110 2 22 1 34 7 82 1 84 9 48 <br /> MS % Recovery 96 1% 746% 83 7% 900% 95 0% 81 5% <br /> Surrogate Recovery 95 6% 890% 890% 890% 890% 89 0% <br /> MSD % Recovery 95 8% 81 5% 860% 909% 95 1% 80 2% <br /> ISurrogate Recovery 106% 960% 960% 960% 960% 960% <br /> Relative % Difference 0235% 8 88% 2 60% 0 997% 00849% 1 61% <br />' Methanol Blank ND ND ND ND ND ND <br /> Surrogate Recovery 107% 107% 107% 107% 107% 107% <br /> IThe 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 /> refect batch results <br /> ANALYST AP?ROVED BY(�7� t <br /> Clary J Cone Ja s'C Phrllrps <br /> ,-,Environmental Lab Director <br />