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COLUMBIA ANALYTICAL SERVICES, INC. <br /> Analytical Report <br /> Client: EMCON Associates Date Received: 05/14/91 <br /> Project: Harney Lane Landfill/#939-01.10 Work Order#: K912618C <br /> Sample Matrix: Water <br /> Dissolved Metals <br /> mg/L (ppm) <br /> Sample Name: MW-4 Method Blank <br /> Lab Code: K2618-4 K2618-M8 <br /> Analyte Method MRL <br /> Arsenic 7060 0.005 ND NO <br /> Barium 6010 0.005 0.301 NO <br /> Cadmium 6010 0.003 ND NO <br /> Calcium 6010 0.1 99.5 NO <br /> Chromium 6010 0.005 ND ND <br /> Copper 6010 0.01 ND ND <br /> Lead 7421 0.002 ND ND <br /> Magnesium 6010 0.02 51.1 ND <br /> Manganese 6010 0.005 ND NO <br /> Mercury 7470 0.0005 ND NO <br /> Selenium 7740 0.005 ND NO <br /> Silver 6010 0.01 ND NO <br /> Sodium 6010 0.1 50.4 ND <br /> Zinc 6010 0.01 ND NO <br /> MRL Method Reporting Limit <br /> ND None Detected at or above the method reporting limit <br /> Approved by, <br /> Dat -7-7 <br /> 00002 <br /> 1317 South 13th Avenue • P.0. Dox 479 • Kelso,Washington 98626 • Telephone 206/577-7222 • Fox 206/636-1061 <br />