Laserfiche WebLink
The cuttings were disposed of in the collection pit. Steel Schedule-40 or -80 pipe was placed in each of the <br />nominal 13-inch diameter holes, and the annulus was fully grouted. <br />The power distribution component includes construction of the 69 KV powerline, approximate 150 by 150- <br />foot substation azea, switchgeaz building, grounding bed and three nominal 13-inch diameter boreholes <br />from the surface to the underground workings at the proposed intake shaft pad above the 6 North Main <br />entries. The substation azea consists of powerpoles for powerline termination, transformer pads, and an <br />approximate 14 x 30-foot prefabricated metal building with foundation, and grounding bed. There are <br />three fuse disconnects and three gang-operated disconnects between the powerpole terminations and the <br />transformers. The metal building houses the switchgeaz for the power feed from the transformers to the <br />power cables that feed into the power borehole. The grounding bed, located outside of the shaft pad azea, <br />consists of copper rods buried in trenches at a depth of approximately 5 feet. <br />In order to hang the power cables in the holes, a steel structure(s) was constructed over the three cased <br />holes. This structure(s) is a metal beam(s) and legs, bolted to a concrete footer(s). The beam(s) will be <br />either 14 feet or 10 feet (up to three) in length, and the legs are approximately 6.5 or 8 feet high. The <br />footer(s) is approximately 4 x 4 x 4 feet. The 14-foot beam structure extends over all three boreholes. The <br />10-foot beam structures will be placed over individual or paired borings, if used. On completion and <br />casing of the borings, a 7 x 10 x 5-foot pad was poured azound the three power-drop boreholes. <br />The air compressor component includes construction of a pad, a compressor building, installation of an <br />existing compressor, installation of an electrical power supply for the compressor, and drilling of a nominal <br />13-inch borehole from the surface to the underground workings from the shaft pad above the 6-North Main <br />entries. Drilling of the borehole was covered by the TR05-48 submittal. Details for the concrete pad and <br />compressor support facilities will be submitted for review and approval as a Minor Revision, prior to <br />installation. <br />The rock dust component includes construction of a pad, installation of an existing rock dust storage tank, <br />installation of an electrical power supply for the rock dust tank, and drilling of a nominal 13-inch borehole <br />from the surface to the underground workings from the shaft pad above the 6-North Main entries. Drilling <br />of the borehole was covered by the TROS-48 submittal. Details for the concrete pad and rock dust storage <br />and delivery facilities will be submitted for review and approval as a Minor Revision, prior to installation. <br />The bulk material component includes construction of a pad, installation of a bulk material hopper, and <br />drilling of a nominal 13-inch borehole from the surface to the underground workings from the shaft pad <br />above the 6-North Main entries. Drilling of the borehole was covered by the TROS-48 submittal. Details <br />for the concrete pad and bulk storage and transfer facilities will be submitted for review and approval as a <br />Minor Revision, prior to installation. <br />The water component includes construction of a reinforced concrete pad and footers, installation of a water <br />tank and associated pumping installation, and drilling of a nominal 13-inch borehole from the surface to <br />the underground workings from the shaft pad above the 6-North Main entries. Drilling of the borehole was <br />covered by the TROS-48 submittal TCC proposes to construct a steel water tank 85 feet in diameter and <br />24 feet high designed to hold one million gallons. The tank will rest on a reinforced concrete foundation <br />consisting of aspread-footer, stem wall, and slab floor supported by concrete pilings. Preparation of the <br />tank foundation area will involve grading, compaction, and excavation for the support pilings and spread- <br />footer. Following site preparation, the reinforced concrete pilings and footers will be formed, and poured, <br />followed by the reinforced concrete pad and stem wall. The steel tank will be fabricated in sections which <br />will be placed and anchored on the stem wall. A water-tight liner system will complete the tank <br />installation. <br />MR06-210 2.05 - 45.6e 09/20/06 <br />