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quality. Ifso, how will BRL mitigate such potential effects. Please include in your discussion the <br />possibility of additional sediment entering the North Fork of the Gunnison River due to erosion. <br />The Division has no further concerns. In their December 15, 2008 submittal, BRL revised page <br />2.05-70i to state that no postmining land uses will be adversely affected by discharging mine water <br />to the river. <br />The Division understands that BRL is in the process of applying for a revision to the NPDES <br />permit to change the location and the rate of flow for the mine water discharge point 006 as <br />described in TR-54. Please provide a copy of the revised NPDES permit when it is obtained. <br />The Division has no further concerns. An amended NPDES permit was provided in the December <br />15, 2008 submittal. <br />6. On proposed page 2.05-69, the water analyses presented were based on water that came from the <br />B-8 panel headgate. The Division would like to know if the water sample was taken before or after <br />the water entered the underground sump. If the sample was taken before the water entered the <br />underground sump, please explain why BRL believes that there would not be any difference in the <br />water quality of the sample if it had been sampled after it had entered the underground sump. <br />The Division has no further concerns. Additional water analyses were performed and the results <br />were documented on revised pages 2.05-69 and 2.05-70. <br />7. Please provide a description in the permit application text that explains the process of <br />discharging mine water when the underground sump is being cleaned out. <br />The Division has no further concerns. The B-1 longwall panel is the sump and it will not be <br />cleaned out. <br />8. On revised page 2.05-69, the mine water analyses presented do not include all of the chemical <br />constituents listed in the NPDES permit for mine water discharge outfall 006 Please revise the <br />mine water analyses on page 2.05-69 to include all of the chemical parameters that will be listed <br />in the soon to be revised NPDES permit and provide a complete copy of the laboratory analyses <br />to the Division. <br />The Division has no further concerns. Revised page 2.05-70 in the submittal dated December 15, <br />2008 contained the requested water analysis. <br />9. The probable hydrologic consequences table on revised page 2.05-73 presents analyses for flow, <br />TDS, manganese and iron. However, the current NPDES permit requires sampling for other <br />chemical constituents as well. Please revise the PHC table and discussion to include analyses for <br />all of the chemical constituents that will be included in the soon to be revised NPDESpermit. <br />BRL submitted a revised PHC table on page 2.05-73i. The information presented in the PHC table <br />shows that the discharge of mine water into the North Fork of the Gunnison River will not degrade <br />the quality of the river water beyond receiving stream standards and material damage standards. <br />2