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Page 3 of 6 <br />overburden. Refuse Area 5A would receive the greatest impacts and should still be active at the <br />time of subsidence. A monitoring and maintenance commitment has been added to Section <br />III.A.7h addressing potential subsidence impacts. These refuse areas already receive frequent <br />inspection, maintenance, and reporting to address these types of issues. <br />DBMS: Response is sufficient. <br />5) DBMS: Please describe how BME plans on monitoring and addressing any potential issues <br />from subsidence that may occur to the Red Wash Reservoir 42. <br />BME: Damage from subsidence to Red Wash Reservoir 42 is not expected to be extensive. This <br />reservoir has remained essentially dry with minor amounts of water present only during spring <br />runoff and after exceptional runoff events. As mining gets deeper the resulting impact from <br />subsidence decreases. Provisions addressing impacts to stock ponds and reservoirs can be found <br />in Section III.A.Th. Any stock ponds or reservoirs damaged by subsidence will be repaired as <br />necessary. <br />DBMS: Response is sufficient. <br />6) DBMS: During an inspection conducted by the Division in April 2013, an apparent air <br />monitoring station was observed south of the Red Wash Reservoir 42. Please describe how <br />BME plans on monitoring and addressing any potential issues from subsidence that may occur <br />to the air monitoring station. <br />BME: The remnants of air monitoring station observed in April 2013 are from a station the <br />Deserado Mine was originally required to operate as part of our Air Quality Permits. This <br />requirement was removed from the permits about 20 -years ago. Any impact to the remnants by <br />subsidence, regardless of severity, would be inconsequential. <br />DBMS: Response is sufficient. <br />7) DBMS: Are there any additional structures such as wells, pipelines, culverts, fences and <br />gates not under the ownership of BME within the proposed expansion that would be affected by <br />subsidence? If so, please describe how BME plans on monitoring and addressing any potential <br />issues from subsidence that may occur to these structures. <br />BME: The only structures not previously listed and not under BME's ownership within the <br />