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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.: 145486 r <br /> Review Level: II Reviewed by/Date: <br /> Laboratory Name: Curtis & Tompkins ' <br /> No. and Type of Samples: 3UJ+ I 15 <br /> Analysis/Method: Lead/<oo ioF5 <br /> 6-'I. 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 /> 04Sample preservative listed on COC is appropriate for method (aqueous <br /> samples only). <br /> 4.ONDetection limits on Form I within workplan limits. <br /> ✓5. Holding times for prep and analysis are met. <br /> v/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 /> v,, & &.Surrogate recoveries for samples and QC are included for all organic <br /> analyses. <br /> . <br /> V, analyses. <br /> recoveries meet laboratory/project acceptance criteria for all <br /> samples. <br /> l/10.tf-Matrix Spike/Matrix Spike Duplicate recoveries and RPD are included for <br /> all analyses. <br /> ✓11 L*—Matrix Spike/Matrix Spike Duplicate recoveries meet laboratory/project <br /> u acceptance criteria. <br /> ✓12.NLDuplicate sample results are included for all metals/general chemistry <br /> analyses. <br /> ` <br /> 'll,3NA Duplicate sample results meet laboratory/project acceptance criteria. <br /> ✓(4 Laboratory Control Sample recoveries are included for all analyses. <br /> 6,1'5 Laboratory Control Sample recoveries meet laboratory/project acceptance <br /> criteria. <br /> Ussino Items/Comments/Qualifications: <br /> Mgf lffCM + In L4 10dn <br /> La1r, n,r,dnx-d Lxi v e oina�lm7 r <br /> 1 + <br /> 77 Dominican Drive • San Rafael, CA 94901 • (415)459-3124 • Fax (415)459-6580 <br />