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J. J. Dudash -3- June 1, 2010 <br />BRL - Requested changes were made to page 2.04-12 and Map 9. <br />Section 2.04.6 Geology Description <br />8. Subsection (3)(a) describes the Stratigraphy of the region, and certain of the units listed <br />appear to coincide with units shown on Map 07-Geology, although the unit abbreviations <br />given on Map 07 do not appear to be provided in the text. The Division infers that the <br />following correlations may be likely. <br />Abbreviation Shown on Ma 7 Strati ra hic Unit from Permit Text <br />Tw Wasatch Formation <br />Kmvo Ohio Creek Conglomerate <br />Kmvb Mesaverde Formation - Barren Member <br />Kmvc Mesaverde Formation - Coal Bearing Member <br />Kmvr Mesaverde Formation - Rollins Sandstone <br />If the Division's correlations are correct, please include the abbreviations within the <br />Stratigraphy text so that the map may be more easily interpreted. <br />BRL - The above table was inserted into the text at page 2.04-19. <br />9. Concerning the fault discussion in the first paragraph on revised page 2.04-17 of Section <br />2.04.6(3)(a), if the central faults are normal faults that dip to the northeast, would not the <br />down side be on the north side of the fault not the south side? Please explain or revise <br />appropriately. <br />BRL - The discussion was revised. <br />10. Please update the geology discussion in Section 2.04.6(3)(a) of revised page 2.04-17 to <br />include the discussion of faulting in the new west district that is found on pages 18 and 19 of <br />Section 2.04 of the Bowie No. 1 Mine permit application. <br />BRL - Additional discussion on faulting was added to page 2.04-17. <br />11. Subsection (3)(a)(iii)(A)&(B) on page 2.04-20 should be modified to include Map 08A for drill <br />hole logs, etc. <br />BRL - A reference to Map 08A was added as requested. <br />12. The Division understands that the coal seam that was mined at the Bowie No. 1 Mine had <br />been incorrectly labeled as the D-2 coal seam, whereas it actually is the B-2 coal seam. <br />Please revise the discussion in the first paragraph on revised page 2.04-22 of Section <br />2.04.6(3)(a) accordingly. <br />BRL - The subject paragraph now on page 2.04-21 was amended. <br />13. Because the proposed new mining district is quite a distance west of the current Bowie No. <br />2 Mine area, please incorporate the Bowie No. 1 Mine acid, toxic and alkalinity forming <br />chemical analyses and discussion in Section 2.04.6 for the B-2 coal seam (designated <br />incorrectly as the D-2 coal seam) and the strata immediately above and below the B-2 coal <br />seam into the Bowie No. 2 Mine permit application in Section 2.04.6(3).