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McCamubell Analytical, Inc. 1534 Willow Pass Road,Pittsburg,CA 94565-1701 Web:www.mccampbell.00m E-mail:main@mccampbell.com "When Ouality Counts" I Telephone:877-252-9262 Fax:925-252-9269 QC SUMMARY REPORT FOR 6020A W.O.Sample Matrix: Soil OC Matrix: Soil WorkOrder 0805110 EPA Method 6020A Extraction SW3050B BatchlD: 35412 Spiked Sample ID 0805110-004A Analyte Sample Spiked MS MSD MS-MSD Spiked LCS LCSD LCS-LCSD Acceptance Criteria(e/) mg/Kg mg/Kg %Rec. %Rec. %RPD mg/Kg %Rec. %Rec. %RPD MS/MSD RPD LCS/LCSD RPD Antimony 2.0 50 113 118 4.28 10 112 111 1.34 70- 130 20 80- 120 20 Arsenic 12 50 102 98.6 2.67 10 107 98.6 7.99 70- 130 20 80-120 20 Barium 87 500 107 112 3.91 100 107 105 2.05 70- 130 20 80- 120 20 Beryllium ND 50 96 99.5 3.53 10 104 103 1.64 70- 130 20 80- 120 20 Cadmium 0.74 50 103 107 4.34 10 106 104 1.43 70- 130 20 80- 120 20 Chromium 110 50 107 101 1.86 10 106 100 5.61 70- 130 20 80-120 20 Cobalt I 1 50 105 107 1.24 10 111 109 1.82 70- 130 20 80-120 20 Copper 77 50 103 96.2 2.53 10 110 103 5.91 70- 130 20 80-120 20 Lead 40 50 104 110 3.00 10 107 106 1.41 70- 130 20 80-120 20 Mercury ND 1.25 94.7 100 5.24 0.25 94.3 93.2 1.07 70- 130 20 80- 120 20 Molybdenum 12 50 102 106 3.26 1 10 106 104 2.09 70- 130 20 80- 120 20 Nickel 120 50 89.4 80 2.93 10 110 105 4.66 1 70- 130 20 80- 120 20 Selenium ND 50 103 104 0.154 10 105 99.2 5.28 70- 130 20 80- 120 20 Silver ND 50 92.1 92.1 0 10 108 106 1.49 70- 130 20 80- 120 20 Thallium ND 50 105 Ito 4.70 to 104 103 1.06 70- 130 20 80- 120 20 Vanadium 40 50 105 102 1.43 10 107 102 4.99 70- 130 20 80- 120 20 Zinc 240500 103 109 3.99 100 110 108 1.47 70- 130 20 80- 120 20 -/.SS: 102 250 106 108 2.32 250 104 103 0.809 70- 130 20 70- 130 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 35412 SUMMARY Lab 10 Date Sampled Date Extracted Date Analyzed Lab ID Date Sampled Date Extracted Date Analyzed 0805110-003A 05/05/08 2:00 PM 05/05/08 05/06/08 5:40 PM 1 0805110-004A 05/05/08 2:00 PM 05/05/08 05/06/08 5:00 PM 0805110-004A 05/05/08 2:00 PM 05/05/08 )5/06/08 10:17 PM MS=Matrix Spike;MSD=Matrix Spike Duplicate;LCS=Laboratory Control Sample;1-CSD=Laboratory Control Sample Duplicate;RPD=Relative Percent Deviation. %Recovery=toll'(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.