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' AI ECH Environmental Laboratories <br /> ( ) 6314 Rosecrans Avenue, Paramount, CA 90723-3146 <br /> Telephone: (562) 272-2700 Fax: (562) 272-2739 <br /> ' QA/QC Report <br /> Method: 6010B/7471 <br /> Matrix: AQ <br /> ' Date Analyzed: 12/11/2014 <br /> Units: mg/L <br /> ' Perimeters Method LCS LCSD Spike LCS % LCSD% Limits RPD <br /> Blank Added Rec. Rec. <br /> ' Arsenic 0 0.863 0.841 1 86 84 70-130 2 <br /> Cadmium 0 0.924 0.909 1 92 91 70-130 1 <br /> Chromium 0 0.922 0.904 1 92 90 70-130 2 <br /> ' <br /> Copper 0 1 0.94 0.901 1 94 90 70-130 4 <br /> Lead 0 0.871 0.892 1 87 89 70-130 2 <br /> Mercury 0 0.142 1 0.153 0.15 95 102 70-130 7 <br /> ' Selenium 0 0.95 1 0.903 1 95 90 70-130 5 <br /> Silver 0 0.427 0.45 0.5 85 90 70-130 5 <br /> Zinc 0 0.866 0.84 1 87 84 70-130 3 <br /> 1 <br /> ' LCS: Laboratory Control Standard <br /> LCSD: Laboratory Control Standard Duplicate <br /> ' RPD: Relative Percent Difference of LCS and LCSD <br /> 1 <br /> t <br /> TOTALLY DEDICATED TO CUSTOMER SATISFACTION, <br />