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COLUMBIA SERVICES. INC. <br /> Analytical Report <br /> Client: EMCON Associates Data Received: 11 /91 <br /> Project: North County Landfill - Annual/#93 2.31 Work Order K91 <br /> Sample Matrix: Water <br /> Dissolved Metals <br /> Wt. l l <br /> Sample Name: G-1 G-2 Method Blank <br /> Lab 60-1 0-2 8 <br /> Analyte Mewl MRL <br /> Aluminum 6010 50 ND ND ND <br /> Antimony 6010 50 ND ND ND <br /> Arsenic 7060 5 ND ND NO <br /> Barium 6010 5 51 45 ND <br /> Beryllium 6010 5 ND ND ND <br /> Boron 6010 50 NO NO NO <br /> Cadmium 6010 3 NO ND NO <br /> Calcium 6010 50 15,600 14,200 ND <br /> Chromium 6010 5 ND NO ND <br /> Cobalt 6010 10 ND NO ND <br /> Copper 6010 10 NO ND ND <br /> Iron 6010 20 NO ND NO <br /> Lead 7421 2 NO ND ND <br /> Magnesium 6010 10 9,200 811 NO <br /> Manganese 6010 5 ND ND ND <br /> Mercury 7470 0.5 NO NO ND <br /> Molybdenum 6010 10 ND NO ND <br /> Nickel 6010 20 NO ND ND <br /> Potassium 6010 2,000 413,000 ND <br /> Selenium 7740 5 ND ND NO <br /> Silver 6010 10 NO NO NO <br /> Sodium 6010 100 14,900 15,700 NO <br /> Thallium 7841 5 ND ND NO <br /> Tin 6010 50 NO ND NO <br /> Vanadium 6010 10 17 19 NO <br /> Zinc 6010 10 ND ND NO <br /> MRL Method Reporting limit <br /> ND None Detected at or above the method reporting limit <br /> Approved by �Nt+j Date LZZL <br />