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DAMES & MOORE <br /> Sacramento, California (SAC) <br /> 0 A T A V A L 1 0 A T 1 0 N <br /> M I M 0 0 A N 0 U M <br /> To: Kevin Brown Info: <br /> From: Sacramento QA/QC Group File: 15884-016-044 <br /> Date: September 18, 1996 Reply by: <br /> Subject: Summary of Data Validation for Quanterra Report #089396 <br />' American Forest Product Company <br /> A check for data completeness (Completeness Check) was performed by the Sacramento QA/QC Group on <br />' Quanterra Environmental Services Laboratory report 089396 for the American Forest Product Company <br /> project This report contains analytical data for five samples DAM-1, DMW-S, DMW-2, DMW-4,and <br /> DMW-3 These samples were collected on September 6, 1996 and submitted to the laboratory for <br /> analyses of Total Petroleum Hydrocarbons (EPA 8015m) The laboratory report was received on <br /> September 18, 1996 <br /> The data were reviewed iii 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 /> The following presents an overview of the Completeness Check <br /> • All analyses performed as per Cham-of-Custody (COC) <br /> • A Duplicate Control Sample and Duplicate Control Sample Duplicate (DCS/DCSD) <br /> analysis was performed instead of an MS/MSD analysis due to insufficient sample <br />' volume, therefore no assessment of matrix effects can be made <br /> • No sample dilutions were performed <br />' 0 Associated method blanks were free of compound contamination <br /> • All analyses were performed within holding times <br /> These data are acceptable in all areas of review and useable for their intended purpose <br /> DAtviiws&MooRE <br /> 8801 Folsom Blvd Sucte 200 <br /> Sacramento CA 95826 <br />' A ISACVAL08 215 (916)387 8800/Fax(916)387 0802 <br />