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a 110 2nd Avenue South #D7 Pacheco CA 94553-5560 McCampbell Analytical, Inc. IIIc. Telephone 925-798-1620 Fax 925-798 1622 Website www mccampbell corn E mad main©mecampbell com QC SUMMARY REPORT FOR 6020A W O Sample Matrix Sod QC Matrix Soil WorkOrder 0504049 EPA Method 6020A Extraction SW3050B SatchlD 15745 Spiked Sample 1D NIA Sample Spiked M S MSD IMS-MSD LCS LCSD LCS-LCSD Acceptance Criteria Analyte (%) mg/Kg mg/Kg %Rec %Rec % RPD %Rec %Rec % RPD MS 1 MSD LCS 1 LCSD Tungsten N/A 10 N!A NIA NIA 95 6 976 207 NIA 80-120 %SS NIA 250 1 NIA NIA NIA 104 106 209 NIA 80- 120 All target compounds to the Method Blank of this extraction batch were ND less than the method RL with the following exceptions NONE BATCH 15745 SUMMARY Sample ID Date Sampled Date Extracted Dale Analyzed Sample ID Date Sampled Date Extracted Date Analyzed 0504049-OOIA 4101/05 4/05/05 4/07105 9 15 AM 0504049-OOIA 4101105 4/05105 4107105 9 24 AM 0504049-OOIA 4101/05 4/05/05 4/09/05 3 48 AM 0504049-001A 4/01/05 4105/05 4118105 1 08 PM 0504049-008A 4/01/05 4105105 4113105 11 18 AM 0504049-008A 4/01/05 4105/05 4/13/05 11 27 AM 0504049-OOSA 4/01/05 4/05/05 4113/05 7 22 PM 0504049-OOSA 4/01105 4/05/05 4/14/05 1 58 PM MS=Matrix Sptke MSD=Matrix Spike Duplicate LCS=Laboratory Control Sample LCSD=Laboratory Control Sample Duplicate RPD=Relative Percent Deviation %Recovery=100"(MS Sample)/(Amount Spiked) RPD=100"(MS- MSD)/((MS+MSD)12) MS 1 MSD spike recoveries and 1 or°/RPD may fall outside of laboratory acceptance criteria due to one or more of the following reasons a)the sample is inhomogenous AND contains significant concentrations of analyte relative to the amount spiked or b)the spiked sample s matrix interferes with the spike recovery NIA=not applicable to this method R=analyte concentration in sample exceeds spike amount for soil matrix or exceeds 2x spike amount for water matrix or sample diluted due to high matrix or analyte intent DHS Certification No 1644 QA/QC Off cer