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Page 29 of 48 <br /> .; eurofins <br /> Quality Control - Spike/Spike Duplicate <br /> Calscience <br /> Conestoga-Rovers &Associates Date Received: 05/30/15 <br /> 6520 Corporate Drive Work Order: 15-05-2299 <br /> Indianapolis, IN 46278-2915 Preparation: EPA 3050B <br /> Method: EPA 60106 <br /> Project: 085972-23A-5702 Page 4 of 8 <br /> Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number <br /> COMP(RWR-5702) Sample Solid 1CP 7300 06101115 0610111516:05 150601501 <br /> COMP(RWR-5702) Matrix Spike Solid iCP 7300 06101115 0610111516:06 150601S01 <br /> CQMP(RWR-5702) Matrix Spike Duplicate Solid NCP 7300 06/01115 06101/15 16:07 160601S01 <br /> Parameter Sample Spike MS MS MSD MSD %Rec.CL RPD RPD CL Qualifiers <br /> Conc. Added Conc. %Rec. Conc. %Rec. <br /> Antimony 3.672 25.00 7.207 14 6.522 11 50-115 10 0-20 3 <br /> Arsenic 118.7 25.00 79.57 4X 71.21 4X 75-125 4X 0-20 Q <br /> Barium 92.94 25.00 101.1 32 109.0 64 75-125 8 0-20 3 <br /> Beryllium 0.3349 25.00 23.94 94 22.38 88 75-125 7 0-20 <br /> Cadmium 0.7906 25.00 23.50 91 21.28 82 75-125 10 0.20 <br /> Chromium 21.27 25.00 43.42 89 43.37 88 75-125 0 0-20 <br /> Cobalt 7.374 25.00 30.66 93 28.49 84 75-125 7 0-20 <br /> Copper 39.43 25.00 66.80 109 59.73 81 75-125 11 0-20 <br /> Lead 10.25 25.00 32.35 88 30.17 80 75-125 7 0-20 <br /> Molybdenum 0.7729 25.00 20.63 79 18.54 71 75-125 11 0-20 3 <br /> Nickel 30.95 25.00 52.43 86 52.67 87 75-125 0 0-20 <br /> Selenium 1.985 25.00 25.19 93 23.34 85 75-125 8 0-20 <br /> Silver ND 12.50 12.04 96 11.89 95 75-125 1 0-20 <br /> Thallium ND 25.00 12.13 49 11.79 47 75-125 3 0-20 3 <br /> Vanadium 38.65 25.00 58.59 80 56.16 70 75-125 4 0-20 3 <br /> Zinc 145.4 25.00 81.07 4X 64.40 4X 75-125 4X 0-20 Q <br /> RPD:Relative Percent Difference. CL:Control Limits <br /> 7440 Lincoin Way,Garden Grove,CA 92841-1427 • TEL:(714)895-5494 FAX:(714)894-7501 <br />