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2010-08-27_PERMIT FILE - C1982056
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2010-08-27_PERMIT FILE - C1982056
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Last modified
8/24/2016 4:20:17 PM
Creation date
10/14/2010 11:50:20 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Permit File
Doc Date
8/27/2010
Doc Name
FUEL STORAGE AND FUELING INSTALLATION UPGRADES
Section_Exhibit Name
Exhibit 49V Fuel Storage & Fueling Installation Upgrades Design Drawings
Media Type
D
Archive
No
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• The scope of work to be completed by the contractor includes the following to be started in the order noted: <br />1. Removal and Disposal of Contaminated Soils: <br />All four of the fueling stations have some degree of contaminated soil as the result of various fueling related <br />activities. This contamination must be removed and disposed of accordingly. The top eighteen inches of soil, in the <br />areas defined in Drawings #070810A, #07081013, #070810C and #070810D, shall be scraped off and trucked to the <br />landfill in Milner (approximately 20 miles from the mine site) for disposal. In order to ensure no recontamination, <br />fueling sites will be shut down while actively worked on. <br />2. Gasoline Storage Tank: <br />The gasoline storage tank is located in the cribbing yard, across from the mine offices (see Drawing #070810E.) It <br />is a double - walled, two - thousand gallon vessel and is used by TCC's fleet of surface light trucks (see Picture <br />#070910B.) Prior to the start of work on this tank, the power to the pump will be disconnected and surface vehicles <br />will be fueled in Hayden for the duration of the work. As shown in Picture #070910A, there is conduit running from <br />the control box to the fuel pump that will need to be removed before any excavation occurs. Additionally, as shown <br />in Drawing #07081013, the fuel pump shall be moved to accommodate the new design. <br />a. Excavation: <br />At the gasoline tank approximately 26 yards of earth will need to be excavated for the spill catchment basin <br />and accompanying fueling pad. Excavated material may be trucked to the refuse disposal area on <br />Twentymile property. <br />b. Soil Preparation: <br />• Prior to concrete work the soils, which consist of unconsolidated fill material (including shales and <br />claystones), should be wetted to within 2% of optimal moisture content and compacted (to a depth of one <br />foot) to at least 100% of maximum standard proctor density. <br />c. Concrete: <br />As per Drawing #070810B, the basin area concrete is to be poured to a depth of 6 inches. This concrete is <br />to be reinforced with a single mat of #5 rebar on 12 inch centers. Reinforcing bars shall conform to ASTM <br />Specification A615 -79 and shall be grade 60. At splices, overlap bars 36 diameters and at corners or <br />intersections bars should either be continuous or provide matching corner bars. <br />The fueling pad is to be poured to a depth of 9 inches, as per Drawing #070810B. This concrete should be <br />slightly sloped towards the basin and to the center in order to ensure fuel spills drain to the basin, not the <br />earth surrounding the pad. It is to be reinforced with a vertically centered mat of #5 rebar on 8 inch centers. <br />All reinforcing bars shall conform to ASTM Specification A615 -79 and shall be at least grade 60. At <br />splices the bars shall be overlapped 36 diameters. At corners and intersections the bars shall be continuous <br />or matching corner bars shall be provided. <br />All concrete shall have a minimum 28 day compressive strength of 3000psi, Type 1. <br />d. Grading: <br />After the pad and basin have been poured, the area surrounding shall be re- graded and sloped to restore <br />proper drainage of precipitation and runoff water. Once the concrete has been allowed to cure for at least <br />one week concrete k -rails (jersey barriers) shall be placed, as shown in Drawing #070810B, around the <br />perimeter of the catchment basin. <br />3. Main Diesel Storage Tank: <br />The main diesel storage tank is located next to the dry storage shed, directly across from the light duty bay (as <br />• shown in Drawing #070810E). This tank is a double - walled vessel capable of containing 20,000 gallons of diesel <br />fuel for use by both heavy equipment and underground mantrips (see Picture #070910C.) As this tank is the main <br />diesel storage for the mine, it is required that down time on it be minimal. <br />SLC- 5537792 -7 <br />
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