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Page 10 of 21 <br /> aiscience <br /> nvironmental Quality Control - Spike/Spike Duplicate <br /> aboratories, Inc. <br /> ICL Performance Products LP Date Received: 02/26/14 <br /> 10667 Jersey Blvd. Work Order: 14-02-1802 <br /> Rancho Cucamonga, CA 91730-5110 Preparation: EPA 3050B <br /> Method: EPA 6010B <br /> Project: Stockton AB Page 1 of 3 <br /> Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number <br /> 14-02-1868-1 Sample Solid ICP 7300 02/27/14 02/28/14 19:39 140227501 <br /> 14-02-1868-1 Matrix Spike Solid ICP 7300 02/27/14 02/28/14 19:40 140227501 <br /> 14-02-1868-1 Matrix Spike Duplicate Solid ICP 7300 02/27/14 02/28/14 19:42 140227501 <br /> Parameter Sample Spike MS MS MSD MSD %Rec.CL RPD RPD CL Qualifiers <br /> Conc. Added Conc. %Rec. Conc. %Rec. <br /> Antimony ND 25.00 0.4131 2 1.110 4 50-115 92 0-20 3,4 <br /> Arsenic 2.381 25.00 29.66 109 28.92 106 75-125 3 0-20 <br /> Barium 88.32 25.00 116.3 112 112.7 97 75-125 3 0-20 <br /> Beryllium 0.6783 25.00 28.17 110 27.16 106 75-125 4 0-20 <br /> Cadmium ND 25.00 24.72 99 24.00 96 75-125 3 0-20 <br /> Chromium 23.82 25.00 51.37 110 49.71 104 75-125 3 0-20 <br /> Cobalt 10.01 25.00 36.13 105 34.98 100 75-125 3 0-20 <br /> Copper 10.12 25.00 37.32 109 35.87 103 75-125 4 0-20 <br /> Lead 6.643 25.00 30.85 97 30.29 95 75-125 2 0-20 <br /> Molybdenum ND 25.00 21.77 87 20.93 84 75-125 4 0-20 <br /> Nickel 17.12 25.00 42.16 100 41.17 96 75-125 2 0-20 <br /> Selenium ND 25.00 20.19 81 19.28 77 75-125 5 0-20 <br /> 3 <br /> Silver ND 12.50 14.11 113 13.63 109 75-125 3 0-20 <br /> Thallium ND 25.00 21.58 86 21.29 85 75-125 1 0-20 <br /> Vanadium 47.97 25.00 76.60 114 74.64 107 75-125 3 0-20 <br /> Zinc 66.53 25.00 93.71 109 90.42 96 75-125 4 0-20 <br /> RPD:Relative Percent Difference. CL:Control Limits <br /> 7440 Lincoln Way,Garden Grove,CA 92841-1427 • TEL:(714)895-5494 FAX:(714)894-7501 <br />