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i <br /> t <br /> CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive Atwater,CA 95301 Phone (209)384-2930 <br /> ' Certificate No 2079 Fax (209)384-1507 <br /> Advanced GeoEnvironmental Inc Client Protect ID Pacific Pride-EI Dorado Method TPH-Diesel <br /> ' of Northern California Reference Number 3058 Instrument ID HP-GC1 <br /> 4005 North Wilson Way Matrix Water Prepared 6-19-00 <br /> Stockton CA 95205 Analyst Jim Phillips Analyzed 6-21-00 <br /> Attn Tim Cueilar Reported 6-28-00 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE TPM-Diesel <br /> ' Spike Concentration 250 <br /> ' Units ug/L <br /> LCS Batch# TPHDW-6190 <br /> ' LCSA% Recovery 851% <br /> LCSB% Recovery 891% <br /> ' Control Limits 55-130% <br /> Relative%Difference 461% <br /> ' MS/MSD Batch# TPHDW-6190 <br /> MS%Recovery See Note <br /> ' MSD%Recovery See Note <br /> Relative%Difference See Note <br /> ' Note Insufficient sample material to prepare MSIMSD samples LCS samples prepared in duplicate <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 _ �APPROVEID F3Y <br /> GIarl J Cone J mes Phrllips <br /> ' Environmental Lab Director <br />