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2.04.6 <br />The high ph values indicate a potential problem for mine water discharge <br />from the B -Seam. <br />Boron is a trace element needed for plant growth, but toxic in excess. <br />Elevated Boron in the B -Seam roof and floor indicates that in order to <br />vegetate refuse material, it will have to be covered with suitable plant growth <br />media. <br />The sodium adsorption ratio for the roof, interburden and floor and coal in <br />the D -Seam and B -Seam exceeds the recommended value for root zone <br />material. This indicates that in order to vegetate refuse material, it will have <br />to be covered with suitable plant growth media. Except as noted above, no <br />other parameters identify any physical or chemical properties which would <br />pose a serious problem with respect to revegetation or water quality. <br />During 2009, the Operator will wash and load E -Seam coal from West Elk <br />Coal Company (WECC). The following information was provided by WECC <br />to demonstrate the E -Seam coal does not have acid forming properties. <br />Average Acid -Base Potential for E-Seam <br />(WECC Table 64 <br />Location of <br />Samples <br />Sulfur Form Used for <br />Calculating <br />Acid -Base Potential <br />Weighted- Average <br />Acid -Base Potential <br />(t. CaCO3 eq. /1000 t. <br />material) <br />E Seam Roof <br />total <br />+75.7 <br />E Seam Floor <br />total <br />+16.5 <br />E Seam Total <br />total <br />+54.4 <br />Beginning September 2014, the Operator will wash and load D -Seam coal <br />from Oxbow Mining. The following information was obtained from Oxbow's <br />mining permit C- 1981 -022, page 2.04- 15,Table 2.04.6 -71. <br />MR -160 2.04-25- 09/14 <br />