2012-11-20_REVISION - C1996083 (4)

Home Browse Search

Burgmaier November 20, 2012 Page 2 With PR -13, BRL proposes to expand its mine plan to the north in the western mining district so it can mine four additional longwall panels. I have the following adequacy review comments regarding PR -13. 1. On permit page 2.04 -32i BRL describes monitoring well TC -03 -03 and indicates that this well has a pinched casing and is scheduled to be abandoned. Based on recent conversations with J.E. Stover & Associates this well has since been abandoned. Please revise the permit text accordingly and submit an abandonment report to the Division in accordance with Rule 4.07.3. Map 09 Hydrological Monitoring Location Map still shows well TC -03 -03 as an Active Monitoring Point and this should also be updated. 2. Please revise Map 09 to differentiate between wells that are inactive versus those that have been sealed and abandoned. It appears that there are a few wells that have been abandoned and permanently sealed but are still designated on Map 09 as Inactive Monitoring Points. Wells that have been pennanently sealed but that are described in the permit text or listed in AHRs with regard to water quality data or other pertinent information should remain on Map 09 with the designation of permanently sealed. It will be necessary to locate these wells during future groundwater reviews. 3. The two monitoring wells installed in 2011 to provide down gradient monitoring for the western mining district are shown on Map 09 as 2010 -1 Proposed Monitoring Well. This designation should be changed to Active Monitoring Point and the two wells at this location should be identified separately on the map to show that there are actually two wells. These wells are described on page 2.04 -3 -2i. One monitoring well (2010 -113) is completed in the 13- Seam with a screened interval of 1,190 to 1,220 feet. The second well (2010 -1 S S) is completed in a sandstone water bearing zone located above the B -Seam with a screened interval of 1,120 to 1,140 feet. Please add the Well Completion Diagrams for these wells into the permit application package. 4. The Active Monitoring Wells Completion Summary Table that is provided in the PAP on page 2.05 -1251 needs to be updated with the wells drilled in 2011. It also appears that well TC -03- 03 is no longer active. Please ensure that the information contained on this table is updated and accurate for the current monitoring program. 5. Please update page 2.05 -117 of the Hydrologic Monitoring Plan where drill holes are discussed. It appears that there are now sixteen drill holes monitored and the text needs to include the separate descriptions for the two wells at the 2010 -1 location.