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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 DWA <br /> Report No.: 145486 <br /> Review Level: II Reviewed by/Date: <br /> Laboratory Name:_ Curtis & Tompkins ' <br /> No. and Type of Samples: 3W J- ,_'-�S <br /> Analysis/Method: VOCs N2C,OL3 ✓ <br /> V1. Date received and collected on COC matches Form I. <br /> L4. Matrix listed on COC matches Form I, with appropriate units and detection <br /> limits. <br /> -- Sample preservative listed on COC is appropriate for method (aqueous <br /> samples only). <br /> ✓4.NADetection limits on Form I within workplan limits. <br /> ✓5. Holding times for prep and analysis are met. <br /> v6. 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 /> .( Surrogate recoveries for samples and QC are included for all organic <br /> d analyses. <br /> ✓9. Surrogate recoveries meet laboratory/project acceptance criteria for all <br /> 13 samples. <br /> 00 + Matrix Spike/Matrix Spike Duplicate recoveries and RPD are included for <br /> —all analyses. <br /> x/11:(-Matrix Spike/Matrix Spike Duplicate recoveries meet laboratory/project <br /> Y acceptance criteria. <br /> L,12.NA Duplicate sample results are included for all metals/general chemistry <br /> analyses. <br /> ✓l3.NA.Duplicate sample results meet laboratory/project acceptance criteria. <br /> X14. Laboratory Control Sample recoveries are included for all analyses. <br /> (�5 Laboratory Control Sample recoveries meet laboratory/project acceptance <br /> criteria. <br /> Missin Items/Comments/Qualifications: <br /> 3 6 <br /> LE r� <br /> W-5 <br /> I/ 1 1CAI_• . SD < 20% -11 r >6.cjS. <br /> V X20 • <br /> x cm77 Dominican Drive • San Rafael, CA 94901 • (415) 459-3124 • Fax (415)459-6580 <br />