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McCampbell Analytical, Inc. 1534Wi11owPass Road,Pittsburg,CA 94565-1701 Web:www.mccampbellxom E-mail:main@mccampbell.com "When Ouality Counts" I Telephonic:877-252-9262 Fax:925-252-9269 QC SUMMARY REPORT FOR E350.1 W.O.Sample Matrix: Water QC Matrix: Water BatchlD: 38822 WorkOrder 0810330 EPA Method E350.1 Extraction E350.1 Spiked Sample ID: 0810255-0011 Analyte Sample Spiked MS MSD MS-MSD LCS LCSD LCS-LCSD Acceptance Criteria(%) mg/l. mg/L %Rec. %Rec. %RPD % Rec. %Rec. %RPD MS/MSD RPD LCS/LCSD RPD Total Ammonia as N ND 4 95.3 98.8 3.66 1 95.7 96 0.303 80- 120 1 20 90- 110 20 All target compounds in the Method Blank of this extraction batch were ND less than the method RL with the following exceptions: NONE BATCH 38822 SUMMARY Lab ID Date Sampled Date Extracted Date Analyzed Lab ID Date Sampled Date Extracted Date Analyzed 0810330-0018 10/13/08 11:15 AM 10/16/08 10/16/08 4:30 PM 0810330-002B 10/13/08 1:10 PM 10/17/08 10/17/08 2:17 PM 0810330-0048 10/13/08 1:30 PM 10/17/08 10/17/08 1:10 PM 0810330-005B 10/13/08 3:15 PM 10/16/08 10/16/08 6:43 PM 0810330-006B 10/13/08 3:25 PM 10/16/08 10/16/08 4:44 PM MS=Matnx Spike;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)/2). MS/MSD spike recoveries and/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. N/A=not applicable to this method. NR=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 content. WHS ELAP Certification 1644 to— QA/QC Officer