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4. Comment Chapter III, Section E, p. 12 discusses the <br /> impacts of mining on ground water quantity. The applicant <br /> should include a discussion of the impacts on ground <br /> water quality. <br /> Reply Discussion is located on page III-E-12 . 1 . <br /> Vol . V, Chap. III, Sec. E (Add explanation as Page <br /> 12 . 1) . <br /> 5 . Comment Table 783.15. 4 reports levels of iron and <br /> manganese in the Coal Creek alluvium that are extremely <br /> high. If this is not a typographical error, the applicant <br /> should provide an explanation of the source of these <br /> levels. <br /> Reply This sample was apparently taken by USGS in <br /> 1975. The only explanation we can give is that somehow <br /> this sample was contaminated. No such levels of iron <br /> or manganese are indicated in those taken in 1980 and <br /> 1981. The location where this sample was taken is the <br /> Company' s Wash Plant No. 9 well (Appendix III-E-2) . <br /> Vol. 5, Appendix III-E-1 (Add explanation to this <br /> table) . <br /> 6 . Comment The applicant shall provide a discussion of <br /> the possible impacts to the quantity and quality of the <br /> surface water in the permit and adjacent area as a <br /> result of the mining operations . <br /> Reply See Par. C-8 on page 22 of Chap. IV and <br /> discussion contained on new page 22 . 1 . <br /> Vol. 7 , Chap. IV (Add explanation as page 22 .1) . <br /> 7. Comment The applicant shall locate the sources of <br /> elevated concentrations of TDS, sulfates and heavy <br /> metals identified in the study by the Colorado Depart- <br /> ment of Health (MRP Chapter IV, pp. 20 and 21 . ) Sub- <br /> mitting a copy of this report would be helpful in <br /> determining if mining operations at Coal Basin are <br /> contributing to the elevated concentrations. If the <br /> sources cannot be located the applicant shall amend the <br /> surface monitoring plan to include monitoring each <br /> tributary before it reaches the disturbed area and <br /> monitoring Coal Creek below the mine site, in order to <br /> determine if portions of the mining operations, if any, <br /> are responsible for the water quality degradation. <br /> If the above problem exists and continues the applicant <br /> shall identify the extent the mining operations could <br /> cause contamination and if water rights below the <br /> mining operation will be influenced in Coal Creek Basin <br /> and East Muddy Fork Basin. If these water rights could <br /> be affected, the applicant shall specifically identify <br /> the possible alternative water sources, mentioned in <br /> Chapter IV p. 22, and submit a plan to replace the <br /> existing water rights. <br />