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DATA VALIDATION MEMO <br /> 2870 Gateway Oaks Drive Suite 300 <br /> UM Sacramento,CA 95833 <br /> Telephone-(916)679-2000 <br /> Fax-(916)679-2900 <br /> TO- Jack Kemp <br /> FROM: Sacramento QA/QC Group FILE: 15884-019-044 <br /> DATE: March 26, 2001 SITE: American Forest Products <br /> SUBJECT: Summary of Data Validation for American Forest Products - Stockton <br /> This report summarizes the findings of the Completeness Check for eight water samples DMW-1, <br /> DMW-2, DMW-3, DMW-4, DMW-5, DMW-6, DMW-60, and DMW-7 Samples DMW-6 and <br /> DMW-60 represent a field duplicate pair The samples were collected March 1, 2001, as part of the <br /> American Forest Products Quarterly Groundwater Monitoring project, and were submitted to Entech <br /> Analytical Labs in Santa Clara, California for TPD-diesel (EPA 8015m) analysts The laboratory report <br /> was received on March 23, 2001 <br /> The data were reviewed in accordance with analytical methods outlined in EPA SW-846 The data were <br /> evaluated based on the following parameters <br /> ✓ Data Completeness <br /> ✓ Holding Times and Preservation <br /> ✓ Blanks <br /> ✓ System Monitoring Compounds (Surrogates) <br />. ✓ Laboratory Control Samples <br /> ✓ Matrix Spike/Matrix Spike Duplicates <br /> ✓ Field Duplicates <br /> ✓ Compound Identification and Quantification <br /> The following presents an overview of the Completeness Check <br /> • The analyses were performed as requested on the chain-of-custody record Method-specified <br /> holding times were met for the extraction and analysis of these samples <br /> • The method blank was free of target-compound contamination <br /> • The surrogate, o-terphenyl, is appropriate to this method The other surrogate recoveries were <br /> within acceptable limits <br /> • The LCS percent recoveries were within laboratory acceptance limits <br /> • The field duplicate pair, DMW-6 and DMW-60, demonstrated acceptable field and analytical <br /> precision <br /> • Sample DMW-3 was utilized for the MS/MSD analyses The average recovery and relative <br /> percent difference were within laboratory acceptance limits <br /> • According to the laboratory, the chromatographic pattern for samples DMW-1, DMW-3, <br /> DMW-4, and DMW-7 are atypical of diesel fuel Consequently, the laboratory has denoted the <br /> reported results as such <br /> These data are acceptable in all areas of review and are useable for their intended purpose <br /> A 1Sacvam 849 <br />