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West Elk Mine <br />(or lack there of) for constant, high volumes of coal. MCC will notify the Division if plans that may affect <br />the subsidence profile are implemented. <br />Preventive Measures (Surface) - ZOS.6 (6) (1) (W)Qa--F9 <br />Surface measures that may be taken to reduce or prevent damage to applicable structures or water resources <br />could include, but are not limited to; (1) Engineering, design, and construction of structures to withstand <br />varying ground stresses, (2) Re-locating structures or ponds to mid-panel or outside the angle of mining <br />influence, and/or (3) Enhancing or reinforcing water resource production or delivery systems (e.g., pipeline), <br />respectively. <br />A total of five reflector stations will be placed in the Deep Creek Ditch at the transition of the ditch into <br />the Dry Fork Basin. Should E-seam longwall panel E6 be extended under Deep Creek Ditch in the <br />Projected Potential Mining Area (see Map 51), additional reflector stations will be added and surveys <br />conducted as below. The stations will be surveyed on the following schedule. <br />1) Pre-mining - At least one baseline survey will be conducted within the 30-day period before the <br />longwall starts in Panel E5. If the ditch will be undermined during winter conditions this survey <br />may be done at the end of the period of seasonal access prior to the expected start of mining in <br />panel E5. <br />2) During mining - Monthly surveying will be conducted while the longwall face is within 1000 feet <br />of being underneath the ditch (if seasonal access permits). The same will occur if longwall panel <br />E6 is extended eastward and under the ditch. <br />3) Post-mining - Monthly surveys will be completed for the first two months after each longwall <br />face has proceeded to more than 1000 feet from being underneath the ditch (or only one final <br />survey will be done if seasonal access is unavailable during the 30-day period immediately <br />following undermining of the ditch). Data from the surveys will be reported in the subsequent <br />semi-annual subsidence report. <br />Detailed Description ofMiticat ns Measures - Z05.6f6ffirv)(A D <br />Impacts to structures (buildings) and ground and surface water resources will be monitored and mitigated, if <br />necessary, as presented later in this section, in Sections 2.04.7(3) and 2.05.6(6)(e)(ii)(A-C), in Exhibit 19C, and in <br />Exhibit 52. Monitoring personnel (e.g. hydrology, subsidence survey) are regularly in the field throughout the <br />permit area and note observations of cracking, landslides, rockfalls, or other natural and/or subsidence hazards or <br />impacts. The private landowner in the Jumbo Mountain lease tract also observes and reports cracking, sliding, or <br />other unusual conditions. Roads will be repaired through regarding or filling if adversely affected by subsidence. <br />Should cracking or blockage of a trail or an unimproved road that is open for use (i.e. is not blocked, reclaimed, or <br />otherwise "closed" from use) occur from subsidence, the damage would be repaired (i.e. fill crack, buttress, install <br />drains, or remove blockage etc.) or the area barricaded or blocked to prevent access. MCC will also place an <br />informational sign along the primary public access to the USFS lands for mining and/or natural hazards awareness. <br />MCC recognizes that proposed mitigation to surface waters, roads, vegetation, wetlands, etc. on Forest lands in the <br />SOD will be accomplished in accordance with the USFS stipulations specified on the BLM Federal Lease C-1362. <br />This document contains the stipulations agreed to by MCC with the Forest regarding, in part, the mitigation <br />requirements for mining related impacts within the Forests Lands in the SOD area. <br />MCC will repair impacts of subsidence on surface drainages on USFS lands (or other private lands), including <br />revegetation as necessary to control erosion. For any impacts occurring on USFS lands, MCC will consult the <br />USFS immediately to determine a) The level of mitigation needed, and b) The feasibility of employing the <br />proposed mitigations. Should these impacts occur on USFS lands, MCC, in conjunction with the USFS, will <br />evaluate the impacts on a case by case basis to assess the most appropriate mitigation. MCC will seek Forest <br />Service approval for any mitigation(s) on USFS lands. <br />2.05-170 R-. 06105- PRIG, 03106- PRIO, 05106- PRIG, 111060- nU07, 04107- 7R108, 09107- PR12, 02/08- PR12, 11/10- TR124