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Table 4. Synthetic Precipitation Leaching Procedure Test Results <br />Holcim (US) Inc., Portland Plant <br />Date 11/14/2002 1999 <br />Material Alkali Bypass Dust Sludge/CKD Mix <br />Parameter <br />Calcium 1680 251 <br />Chloride 4600 77.2 <br />Sodium 158 195 <br />Sulfate 2680 3800 <br />Conductivity (mS/cm)29900 10600/12300 <br />pH (std. units)12.4 12.5/12.7 <br />1999 sample from Resource Geoscience, Inc. 1999. Hydrogeologic Assessment Holnam, Inc. Portland, CO. <br /> Prepared for Holnam, Inc. January 27, 1999.