2023-01-05_REVISION - C1981019 (13)

Home Browse Search

or other exposed opening constructed or encountered during mining will be cased, sealed or otherwise managed (some holes are mined through) according to the requirements of 4.07. Details are found in Section 2.05 of the PAP. Monitoring wells will be fitted with temporary caps. Holes dug to aquifers will be sealed with cement or other suitable sealant to within ten feet of the surface. Colowyo has no active Notices of Intent (NOIs) to explore for coal with the Division. All of Colowyo's previous NOIs have received final reclamation and have received full bond release. VI. Use of Explosives - Rule 4.08 The Permit is found to be in compliance with the requirements of Rule 4.08. The blasting plan is found in Section 2.05 and in Section 4.08 of the PAP. The PAP provides typical blasting patterns (Maps 26, 26A, 26B and 27). Blasting patterns specific to each blast are recorded on the individual blasting records (Rule 4.08.5). A description of the explosives storage facility is presented in Exhibit 16 of the PAP. A preblast survey was conducted on January 10 and 11, 1991 (date of report 19 February 1991). Durnham Ranch dwellings are located within onehalf mile of the permit area. There are several additional structures that required a pre-blast survey for PR-02. The Tri-State Generation and Transmission Association 345 kV power lines are within 1,000 feet of the box-cut for the South Taylor Pit. Eight poles over a distance of 1.75 miles were surveyed. A residence, the Paul Routsen residence at 6647 and 7072 Moffat County Road 51, was also surveyed. This residence is approximately 5,000 feet from the South Taylor Pit. These surveys were conducted on August 9, 2007 and are contained in Exhibit 14 of Volume 13 of the PAP. VIL Disposal of Excess Spoil - Rule 4.09 The Permit is found to be in compliance with Rule 4.09. Information on excess spoil waste can be found in Sections 2.05 and 4.09 of the PAP. The Mine currently has six approved excess spoil fills: the Streeter Fill, the West Pit Fill, the Section 16 Fill, the East Taylor Fill, the West Taylor Fill, and the Collom Fill. Overburden material from the initial box cut for the East Pit was placed in the Streeter valley fill. Now complete, Streeter fill contains approximately 47 million cubic yards of excess spoil fill. The Section 16 fill, also complete, contains approximately two million cubic yards of excess spoil fill. The West Pit fill, also complete, contains approximately 19 million cubic yards of excess spoil fill. Grading activities are still being performed in the West Pit fill. The East Taylor Fill and the West Taylor Fill contains the initial box-cut material from the South Taylor Pit. The approximate design volumetrics associated with these fills are as follows: • The permanent East Taylor Fill - 20 million cubic yards Proposed Decision and Findings of Compliance January 5,2023 Permit Renewal No. 8 Page 146