2012-01-13_APPLICATION CORRESPONDENCE - C2010089 (2)

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C-2010-089 New Horizon North Mine PARNos. 1- 1A -1B, 2-2A-2B,, 3 Page 12 of 60 5. Numerous authors and publications are referenced within the text of this section. Please provide a complete list of references at the end of the section in accordance with the requirements of2.03.3(l). Itttitrevohyed iii 3,ltiy-201,lrc,,vl)onse� 2.04.6 - Geology Description 2.04.01) - General Requirements 1. On Figure 2.04.6-1 General Columnar Section, there is an incorrect reference to the Burro Canyon Shale. The Burro Canyon is a Formation of Cretaceous age as opposed to a Member of the Jurassic age Morrison Formation and is stratigraphically above the Brushy Basin Member of the Morrison Formation. Please correct Figure 2.04.6-1. bent reso&edin 11ay-2011 resj)onse. 2.04.6L2) -Su�1�7ce Mining 1. Rule 2.04.6(2) requires analyses of the coal seam, including, but not limited to, an analysis of the sulfur, pyrite, and marcasite content. In the permit text there are inferences made as to the pyrite and marcasite content visible in core samples but no analyses were provided. Further our Division Guidelines for the Collection of Baseline Water Quality and Overburden Geochemistry Data (1982) recommends that sulfur analyses be broken out into % Pyritic Sulfur, Sulfate Sulfur, and Organic Sulfur in addition to Total Sulfur analysis. The reason for this is to be able to determine the Acid Mine Drainage potential of the replaced spoil material. In Table 2.04.6-1 Coal Analyses and table 2.04,6-2 Overburden Analyses of the application, only Total Sulfur wt% is provided. Pursuant to Rule 2.04.6(2)(b)(i)(E), and the Division's "Guidelines for the Collection of Baseline Water Quality and Overburden Geochemistry Data" (Table 5 - Overburden Chemistry), please provide analysis information on the breakdown of the total sulfur, including sulfate, organic, pyritic and marcasite sulfur. Peabody coal analyses are included as Appendix Table 2.04.6-4. Coal analyses of samples taken during overburden core sampling are included in Appendix Table 2.04.6-5. Item resoh,ed in AItty-2011 resl)onse. 2. In the second paragraph of page 9 (fifth sentence) "...hole drilled..." should be plural "holes drilled". -1tent resoh,,ed in Alay-2011 response. 3. The footnote to Table 2,04.6-2 indicates that trace elements were analyzed by EPA Methods 3252/6020. This should read EPA Methods "3052/6020". Itent resolved in lllta11-2011 resjwnse. 4. The footnote to Appendix Table 2.06.6-2 also has an incorrect reference to the EPA Method. Please make the appropriate corrections. Rent resohed in y-2011 revj)onse. 5. For the trace elements in Table 2.04.6-2, the listings under Parameters/Units are confusing. Take Boron for example, it is shown as Tot. B, (Sol. B.), mg/kg. Please footnote and clarify what is meant by (Sol.) and provide the proper units for these analyses. The table now includes replacement drill holes NHN 11 -1, 11-2 and 11 -3. The footnote referring to Tot (Sol.) was removed. Treat resoh,ed in 11.1tty-2011 resj)onNe;