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4 <br />Permit Revision No. 5 - PAR 2 <br />July 5, 1999 <br />(joints) is being discussed, <br />should add this discussion to <br />it is clear what information <br />Page 2 <br />as opposed to faulting. MCC <br />the permit text to ensure that <br />is being conveyed. <br />The Division believes that the information required by Rule <br />2.04.6(3)(a)(iii)(C) is essential to approving this permit <br />application. MCC drilled numerous holes in the Jumbo Mountain <br />tract to be able to core and analyze for the required <br />information. The Rules require a chemical analyses to show <br />that the roof, floor, and coal seam will not produce toxic and <br />acid-forming materials, and should be provided. Assuming that <br />it will be the same as the current permit area is not <br />sufficient. <br />5. No further response required. <br />Hydrology (Rule 2.04.7) <br />1. How is instantaneous flow measurements and samples taken each <br />month in Gribble Gulch? This information should be added to <br />the permit. Given the inconsistent flow in Gribble Gulch, how <br />does MCC intend to show that the quality and quantity of <br />surface water has not been affected by mining? <br />2. The Division appreciates the clarification. No further <br />response is required. <br />3. Springs emanating through the colluvium would not be very <br />useful for identifying impact to the hydrologic regime. The <br />Division would like the opportunity to review the baseline <br />data for the Rollins sandstone spring, prior to making a <br />decision on MCC's response. <br />4. Springs emanating through the colluvium would not be very <br />useful for identifying impact to the hydrologic regime. The <br />decision on this response is dependent on #3 above. <br />5. No further response required. <br />6. MCC has not responded to this question adequately. The <br />Division requested maps of the piezometric surface of the B- <br />seam and the Rollins sandstone. These maps indicate not only <br />the elevation of the formation water but also the direction of <br />flow and assist the Division in estimating .the potential for <br />impacts to the hydrologic regime. While revised Maps loA and <br />11A are helpful, MCC should also submit plan view maps of the <br />Rollins piezometric surface. <br />