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J. J. Dudash -9- June 1, 2010 <br />BRL - The reclamation of the Freeman Gulch vent shaft was added to page 2.05-100. The <br />paragraph describing the Terror Creek vent shaft was removed from page 2.05-101. <br />44. On revised page 2.05-110, there is a discussion of mine water inflow and discharge from <br />the Bowie No.2 Mine. If data are available, please update the discussion to include <br />anticipated mine inflow and discharge due to proposed mining in the transferred Bowie No. <br />1 Mine area. <br />BRL - The Bowie No. 1 mine was a dry mine. Mine inflow will likely decrease as Bowie retreats <br />from the northeast and moves to the west. The 1,000 gallon per minute discharge that is used <br />to determine the PHC is considered the upper limit of mine water discharge. <br />45. On revised page 2.05-116, there are five monitored springs listed that have decreed water <br />rights. However, the two tables on revised page 2.04-29 show that there are several <br />additional springs and ponds that also have decreed water rights and that will be monitored. <br />Please update the hydrologic monitoring plan in Section 2.05.6(3)(b)(iv) to include all of the <br />decreed water rights. <br />BRL - The five decreed water rights listed under spring monitoring on page 2.05-116 were <br />deleted from the paragraph. All monitoring points including decreed water rights are listed on <br />the following pages. <br />46. In the last two paragraphs on revised page 2.05-118 and in the first two paragraphs on <br />revised page 2.05-119, the monitoring schedules state that a full suite sample will be taken <br />quarterly and a full suite sample from list 1 will be taken semi-annually. Please clarify. <br />BRL - The language was revised to state the full suite will be taken semi-annually. <br />47. Please explain why BRL is proposing to terminate hydrologic monitoring of well TC-03- <br />01(R), as shown on revised pages 2.05-117 and 2.05-124. <br />BRL - Well TC-03-1(R) monitors the Rollins sandstone. Amended page 2.05-115 explains the <br />hydraulic isolation of the Rollins sandstone from the coal seams to be mined. Since the Rollins <br />sandstone will not be impacted, monitoring of it is not required. <br />48. Please explain why the text concerning hydrologic monitoring for culverts C-1 through C4 is <br />being deleted on revised pages 2.05-119 and 2.05-124. These four culvert locations still <br />appear on Map 9. <br />BRL - Monitoring of culverts C-1 through C-4 will continue. The strikeout on pages 2.05-119 and <br />2.05-124 was removed. <br />49. As shown on the list of water monitoring stations starting on revised page 2.05-120, BRL is <br />proposing to terminate hydrologic monitoring at certain ponds and springs which have <br />decreed water rights or are of high value and that are managed by the USDA-Forest <br />Service. Do any of the federal coal leases require BRL to perform hydrologic monitoring of <br />any of these sites, regardless of whether or not the sites are undermined? <br />BRL - No. Monitoring is only required on water resources potentially affected by mining. <br />50. There are several designations for ponds and springs shown on Map 9 which are not on the