Laserfiche WebLink
<br />• <br />Drainage will be provided, as required, to control surface water runoff for <br />a 100-year storm. Ditches will be "V" bottom or flat bottom with a minimum <br />depth of 18 inches and, where necessary, energy absorbers will be <br />constructed to regulate flow velocities and prevent excessive erosion. <br />Culvert pipe will tie corrugated steel pipe (CSP) conforming to AASHTO <br />M36-74, and bedded and backfilled with sand or gravel compacted to 95 <br />percent of maximum density (ASTM-1557). Rock rip-rap will be installed at <br />the culvert outfalls to dissipate energy and prevent erosion. <br />The 20-foot-wide road surface will consist of a 4-inch (minimum) layer of <br />gravel compacted to 95 percent of maximum density (ASTM-1557). The road <br />surface will be crowned to provide drainage. Figure D-6 shows a typical <br />cross-section of the upgraded access road. No significant cut or fills are <br />anticipated. <br />D.4.2 Utilities <br />Electrical power will be supplied by three 200-kw diesel-fueled generators. <br />Process heat will be supplied by two 200-horsepower diesel-fired boilers. <br />A 2-inch-diameter water supply pipeline will be installed cross-country <br />approximately 10,000 feet from a well, located in the NE1/4 of Section 24, <br />T1S, R98W, to the plant site (Exhibit B). The pipe will be 2-inch-diameter <br />flexible polyethylene buried at a nominal depth of 24 inches. The pipe will <br />be placed using a chiain trencher which will cut a 6-inch-wide trench, and <br />the trench will be backfilled with the excavated material. The pipeline <br />will follow existing contours and will not require any significant cuts or <br />fills. <br />An area approximately 10,000 feet long by 12 feet wide will be cleared, <br />where required, to accommodate the pipeline. All trees with a trunk <br />diameter of 4 inches or greater will be cut into 4-foot lengths and stacked <br />near the cleared lane. The disturbed area will be revegetated, following <br />• the methods stipulated by the BLM, during the first fall season after <br />construction. Figure D-6 presents a typical section of the water pipeline. <br />