GENERAL35419 - Laserfiche WebLink

Home Browse Search

Y. Sealing of Drilled Holes and Underground Openings 1. The Division will require that each hole, well or other underground opening be capped, sealed, backfilled, or otherwise properly managed. (4.07.31. VI. Use of Explosives The applicant proposed to conduct blasting operations in the surface mine area. According to Map No. 6, Mine Plan, no potentially sensitive facilities are within 500 feet of the blasting area. The applicant used a previously CMLRD approved scaled distance formula to determine explosive weight and associated blast hole spacing (see Exhibit 21, Volume 3 of permit application). The applicant stated that the number of blast holes per delay would be limited by the modified scaled distance equation so that the peak particle velocity did not exceed the limit of 1 inch per second. A11 warnings and access regulations were implemented by the applicant. All blasting was conducted as announced in the blasting schedule. A record of blasting design and of each shot was kept at the mine office. The Division finds that the blasting plans in the Energy Mine No. 3 permit application conform with the requirements of this section. 2. The mine is now reclaimed; therefore, all blasting activities have permanently ceased. VII. Disposal of Excess Spoil 1. One permanent overburden pile exists at the south end of the mine. The pile was completely constructed prior to enactment of the Permanent Colorado Program. As such, the pile construction was exempted from the requirements of 4.09.1. Specific documentation regarding this exemption is located at Exhibit 26 of the permit document. The operator remains responsible, however, for achievement of successful revegetation of the pile, according to the requirements of current regulations. VIII. Coal Mine Waste Banks 1. There are no coal mine waste banks at this site. (4.101 IX. Coal Mine Wdste 1. There is no coal mine waste at this site. (4.111 - 3 2 -