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Data Validation Memo <br /> 3 DAMES & MOORE 8801 Folsom Boulevard,#200 <br /> { $` A DAMES&MOORE GROUP OOMPANy Sacramento,CA 95826 <br /> Telephone-(916)387-8800 <br /> Fax-(916)387-0802 <br /> TO: Kevin Brown INFO: <br /> FROM: Sacramento QA/QC Group FILE: -044 <br /> DATE: July 29, 1997 <br /> SUBJECT: Summary of Data Validation for Quanterra Report #094048 <br /> American Forest Products <br /> A check for data completeness (Completeness Check) was performed by the Sacramento QA/QC Group on <br /> Quanterra Environmental Services report #094048 for American Forest Products This report contains <br /> analytical data for six samples DMW-1, DMW-10, DMW-5, DMW-2, DMW4, and DMW-3 Samples <br /> DMW-I/DMW-10 represent a field duplicate pair These samples were collected on July 11, 1997 and <br /> submitted to the laboratory for analysts of TPH-diesel (EPA 8015M) The laboratory report was received on <br /> July 29, 1997 <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 <br /> ✓ Blanks <br /> ✓ Laboratory Control Samples <br /> ✓ Matrix Spike/Matrix Spike Duplicates <br /> ✓ Surrogates <br /> ✓ Field Duplicates <br /> ✓ Compound identification and Quantification <br /> The following presents an overview of the Completeness Check <br /> • All analyses performed as per Chain-of-Custody (COC) and all holding times were met <br /> • No MS/MSD analysts was performed, therefore, no assessment of matrix effects can be <br /> made All Single Control Sample and Duplicate Control Sample results were within <br /> acceptable limits <br /> • No contaminants were detected in the associated method blank <br /> • No dilutions were performed <br /> • No significant differences were noted between field duplicate pair DMW-1/DMW-10 <br /> These data are acceptable in all areas of review and useable for their intended purpose <br /> A 1SACVAL08 382 <br />