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I~ <br />I~ <br />TABLE II <br />PERMEABILITY EFFLUENT pH RESULTS <br /> NO. OF pH <br />DUST TREATED BEGINNING END OF <br />SUPPRESSANT LAYERS OF TEST TEST <br />NONE (Control) 1 6.8 5.2 <br />NONE (Control) 3 6.8 5.3 <br />ARCO 2010 1 6.4 4.2 <br />ARCO 2010 3 6.6 5. 1. <br />ARCO 2000 1 4.3 5.8 <br />ARCO 2000 3 6.1 5.2 <br />NALCO 1DP_655 1 6.7 5.2 <br />NALCO 1DA655 3 5.8 5.3 <br />NALCO 8820 1 5.9 5.1 <br />NALCO 8820 3 6.7 6.1 <br />SODIUM LIGNIN <br />SULFONATE 1 6.2 6.3 <br />SODIUM LIGNIN <br />- SULFONATE 3 6.7 6.5 <br />NOTES: 1. Water used during preparation of permeability specimens and <br />permeability tests was mill water from Climax Molybdenum <br />Company with pH values ranging from 5.2 to 5.7. <br />2, pH tests were performed by The Industrial Laboratories Company. <br />3, pH measurements were not performed during the Coherex <br />permeability testing. <br />rf <br />Job No. 20461-3936 <br /> <br />