Laserfiche WebLink
VI. Use of Explosives - Rule 4.08 <br />The Permit is found to be in compliance with the requirements of Rule 4.08. The blasting plan is <br />found in Section 2.05 and in Section 4.08 of the PAP. The PAP provides typical blasting patterns <br />(Maps 26,26A, 26B and 27). Blasting patterns specific to each blast are recorded on the individual <br />blasting records (Rule 4.08.5). <br />A description of the explosives storage facility is presented in Exhibit 16 of the PAP. <br />A pre -blast survey was conducted on January 10 and 11, 1991 (date of report 19 February 1991). <br />Durnham Ranch dwellings are located within one-half mile of the permit area. There are several <br />additional structures that required a pre -blast survey for PR -02. The Tri-State Generation and <br />Transmission Association 345 kV power lines are within 1,000 feet of the box -cut for the South <br />Taylor Pit. Eight poles over a distance of 1.75 miles were surveyed. A residence, the Cannon <br />Family Partnership, LLLP property (formally owned by Paul Routsen) at 6647 and 7072 Moffat <br />County Road 51, was also surveyed. This residence is approximately 5,000 feet from the South <br />Taylor Pit. These surveys were conducted on August 9, 2007 and are contained in Exhibit 14 of <br />Volume 13 of the PAP. With the Collom expansion under PR -04, two pre -blast survey offerings <br />were extended to Wold Oil Properties, Inc. and White River Electric Association. The pre -blast <br />survey offerings are found in Volume 20, Exhibit 14, Item 8 of the PAP. <br />VII. Disposal of Excess Spoil - Rule 4.09 <br />The Permit is found to be in compliance with Rule 4.09. Information on excess spoil waste can <br />be found in Sections 2.05 and 4.09 of the PAP. The Mine currently has five approved excess spoil <br />fills: the Streeter Fill, the West Pit Fill, the Section 16 Fill, the East Taylor Fill and the West Taylor <br />Fill. <br />Overburden material from the initial box cut for the East Pit was placed in the Streeter valley fill. <br />Now complete, Streeter fill contains approximately 47 million cubic yards of excess spoil fill. The <br />Section 16 fill, also complete, contains approximately two million cubic yards of excess spoil fill. <br />The West Pit fill, also complete, contains approximately 19 million cubic yards of excess spoil fill. <br />Grading activities are still being performed in the West Pit fill. <br />The East Taylor Fill and the West Taylor Fill contains the initial box -cut material from the South <br />Taylor Pit. The approximate design volumetrics associated with these fills are as follows: <br />• The permanent East Taylor Fill - <br />20 million cubic yards <br />• The temporary East Taylor Fill - <br />39 million cubic yards <br />• The permanent West Taylor Fill <br />- 28 million cubic yards <br />• The temporary West Taylor Fill <br />- 12 million cubic yards. <br />Specific information on the Streeter Fill can be found in Exhibit 12 of the PAP and in Section B, <br />Item V of the original findings document. Specific information on the West Pit and Section 16 <br />Revised Proposed Decision and Findings of Compliance August 2018 <br />Permit Renewal No. 7 P a g e 143 <br />