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privately owned surface lands. Please ensure that information on all historic mining <br />activity within the proposed permit area is included as required by Rule 2.04.3(3). <br />Northfield Response: Horseshoe mine is now outside pernut azea. <br />DRMS response: Boundary is identified in the legend. Response accepted. <br />9. The Division is currently asking for additional clarifrcation from the State Historic <br />Preservation Office on the potential need for surveying the proposed disturbed area for <br />cultural resources. If any additional information is required regarding cultural resources, <br />we will contact you. (Rule 2.04.4) <br />Northfield Response: An additional cultural survey was submitted August 23, 2007. <br />DRMS response: The Division will forwazd the survey to the SHPO. The survey found no <br />additional cultural resources. Unless we heaz otherwise from the SHPO, this issue is <br />resolved. Response accepted. <br />10. Please submit the chemical analysis of the roof and floor in accordance with Rule <br />2.04.6(3)(a)(iii)(D) for the exploration holes drilled in 2005. <br />Northfield Response: Roof and floor analysis is forthcoming. <br />DRMS response: Roof and floor analysis was included with the August 23, 2007 submittal. <br />If the Division has further questions concerning these data, we will let you know. <br />11. Please submit the thickness and engineering properties of clays or clay shales, if any, in the <br />stratum immediately above and below the coal seam to be mined (Rule 2.04.6(3)(a)(iii)(E). <br />Northfield Response: Exhibit H is reserved for this information. <br />DRMS response: The Division understands that Northfield will collect a sample from the <br />isolated azea where clay shales exist as the mine is extended into this azea. Response <br />accepted. <br />12a. The hydraulic conductivity information derived from pump test data as indicated on page <br />2 of the BBA report should be provided to the Division and incorporated into the permit <br />application package as an exhibit. <br />Northfield Response: Lengthy response with calculations. <br />DRMS Response: Please check the calculation for hydraulic conductivity as the <br />Division believes it is in error and off by one decimal point. Also, incorporate a <br />reference to the "industry standard rule-of-thumb methodology" used to estimate <br />transmissivity such as the EPA Groundwater Handbook, 1987. And finally, please <br />incorporate the text discussion and analysis of pump test data (with the above <br />