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VDataVal, Inc. <br /> DATA REVIEW CHECKLIST BY ANALYSIS METHOD <br /> Project Name: Stockton Redevelopment Performed by/Date: DJB 6/20/00 C6 <br /> Report No.: 145171 <br /> Review Level: II Reviewed by/Date: ePi Na <br /> Laboratory Name: Curtis & Tompkins <br /> No. and Type of Samples: a W <br /> Analysis/Method: TPA -051- <br /> ,/1. Date received and collected on COC matches Form I. <br /> Matrix listed on COC matches Form I, with appropriate units and detection <br /> limits. <br /> ,,,-3.&KSample preservative listed on COC is appropriate for method (aqueous <br /> samples only). <br /> ✓4.1./Detection limits on Form I within workplan limits. <br /> c/5. Holding times for prep and analysis are met. <br /> j/6. Form I is present for all samples and analyses. <br /> L,-7 Method blank results included for all dates of analysis and dates of <br /> preparation (if applicable). <br /> V8' Surrogate recoveries for samples and QC are included for all organic <br /> • a analyses. <br /> V9.1�Surrogate recoveries meet laboratory/project acceptance criteria for all <br /> CC samples. <br /> 0.0.+-Matrix Spike/Matrix Spike Duplicate recoveries and RPD are included for <br /> all analyses. <br /> v1I.+Matrix Spike/Matrix Spike Duplicate recoveries meet laboratory/project <br /> acceptance criteria. <br /> V12.NADuplicate sample results are included for all metals/general chemistry <br /> analyses. <br /> �3 NADuplicate sample results meet laboratory/project acceptance criteria. <br /> ,/14. Laboratory Control Sample recoveries are included for all analyses. <br /> V5. Laboratory Control Sample recoveries meet laboratory/project acceptance <br /> criteria. <br /> Missing Items/Comments/Qualifications <br /> p, *1.R5[> 4-20' <br /> c + - I al <br /> 77 Dominican Drive • San Rafael, CA 94901 • (415)459-3124 • Fax (415)459-6580 <br />