ARCHIVED REPORTS_XR0005429 - Laserfiche WebLink

Home Browse Search

' CASTLE ANALYTICAL LABORATORY Environmental Testing Services 2333 Shuttle Drive, Atwater, CA 95301 Phone (209) 384 2930 ' Certificate #2079 Fax (209) 384 1507 Advanced GeoEnvironmental, Inc Client Project ID Cal Fuels Method EPA 503018015M 8020 ' of Northern California Reference Number 1532 Instrument ID Var-GC1 4005 North Wilson Way Matrix Water Prepared 4-13-98 Stockton CA 95205 Analyst Jim Phillips Analyzed- 4-1398 Alin Tim Cuellar Reported 4 22 98 ' QUALITY CONTROL DATA REPORT ' ANALYTE Gasoline MTBE Benzene Toluene Ethyl Benzene Total Xylenes Spike Concentration 100 1 00 1 00 1 00 1 00 200 Units ug/L ug/L ug/L ug/L ug/L ug/L ' LCS Batch # VG-4138W VB-4128W VB-4138W VB-4138W VB 4138W VB 4138W LCS % Recovery 94 7% 107% 92 1% 990% 97 6% 99 2% Surrogate Recovery 101% 98 5% 98 5% 98 5% 98 5% 98 5% Control Limits 70 130 % 70 130 % 70130 % 70 130 % 70-130 % 70-130 % ' NISIMSD Batch # VG-4138W VI3 4138W V13-4138W VB-4138W VB-4138W VB 4136W MS % Recovery 84 1% 76 8% 78 8% 870% 85 2% 84 3% Surrogate Recovery 89 3% 88 9% 889% 88 9% 889% 88 9% tMSD % Recovery 89 7% 82 8% 845% 806% 846% 847% Surrogate Recovery 91 2% 87 7% 87 7% 87 7% 87 7% 87 7% ' Relative % Difference 5 89% 5 53% 6 52% 6 75% 0676% 0424% Methanol Blank NO NO NO ND ND NO ' Surrogate Recovery 104% 104% 104% 104% 104% 104% The LCS {Laboratory Check Sample► is a control sample of known, interferent free matrix that is fortified with representative analytes and analyzed using the same reagents, preparation and analytical methods employed for the samples The LCS % recovery is used for validation ' 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 reject batch results J ' ANALYST L C APPROVED BY .(�?IA C rr J Cone / Jams C P rllrps E rronmental Lab Director