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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 <br /> Report No.: 145262 <br /> Review Level: II Reviewed by/Date: <br /> Laboratory Name: Curtis & Tompkins- <br /> No. and Type of Samples: q S r <br /> Analysis/Method:T H- E x+rac}zc,ioLPs /s( l m <br /> ✓1. Date received and collected on COC matches Form I. <br /> ✓2 Matrix listed on COC matches Form I, with appropriate units and detection <br /> limits. <br /> ✓3.1Q4,Sample preservative listed on COC is appropriate for method (aqueous <br /> samples only). <br /> --'4.Nk Detection limits on Form I within workplan limits. <br /> ,/5.LHolding times for prep and analysis are met. <br /> �/6. Form I is present for all samples and analyses. <br /> V17. Method blank results included for all dates of analysis and dates of <br /> I (if applicable). <br /> ✓8. Surrogate recoveries for samples and QC are included for all organic <br /> analyses. <br /> V/9. Surrogate recoveries meet laboratory/project acceptance criteria for all <br /> samples. <br /> t.40.-�—Matrix Spike/Matrix Spike Duplicate recoveries and RPD are included for <br /> all analyses. <br /> 11.( Matrix Spike/Matrix Spike Duplicate recoveries meet laboratory/project <br /> V acceptance criteria. <br /> X2.KkDuplicate sample results are included for all metals/general chemistry <br /> analyses. <br /> v1 313h, Duplicate sample results meet laboratory/project acceptance criteria. <br /> 041L Laboratory Control Sample recoveries are included for all analyses. <br /> (45. 1 Laboratory Control Sample recoveries meet laboratory/project acceptance <br /> criteria. <br /> Missing Items/Comments/Qualifications: <br /> ✓AJ I CA L '/. RSD { 20 <br /> ✓Al I CC.V D{ I S•/. <br /> 77 Dominican Drive • San Rafael, CA 94901 • (415) 459-3124 • Fax (415) 459-6580 <br />