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CHAPTERTWO Proposed Action and Alternawes <br />inches would be applied to the pipe as the primary insulation, and 3), ahigh-density polyethylene <br />cover approximately 0.275 inch thick would be applied as the outside protective jacket. <br />Pumps to operate the pipelines would be located at the Piceance and Parachute plant sites. <br />' Pumps would be housed in the plant buildings and would be electrically operated. No pump <br />stations would be necessary along the pipeline. <br />2.2.2.3 Pipeline Installation <br />A 125-foot-wide construction ROW (working easement) for the pipeline would allow sufficient <br />' room for operation of construction machinery, placement of excavated materials, and movement <br />of other pipeline construction traffic along the pipeline trench during pipeline construction. <br />Within the construction ROW, trees and shrubs would be cleazed across the entire corridor to <br />' accommodate pipeline construction activities. In areas without substantial tree and shrub growth, <br />vegetation disturbance, other than that from the actual excavation of the pipeline trench, would <br />be limited to that resulting from movement of construction machinery and from <br />placement replacement of excavated materials. <br />Up to six laydown azeas of approximately 4 acres each would be located along the pipeline route <br />at positions that are logistically significant for construction, not necessarily within or adjacent to <br />the pipeline corridor. In addition, 20 to 25 temporary use areas of approximately 1 acre each <br />would be established along the pipeline corridor at road and stream crossings and at other points <br />' such as at the top and bottom of Davis Point. <br />The pipeline trench would generally be excavated with a standard backhoe. Specialized <br />equipment such as rock trenchers and wheel trenchers would be used where conditions warrant. <br />It is not anticipated that blasting would be necessary. The pipeline trench would be 72 to 80 <br />inches wide and 54 to 60 inches deep. Where present to a depth that allows for stockpiling <br />' (greater than 6 inches), topsoil would be segregated and stored along the pipeline. The product <br />and return water pipelines would be located in a single trench except where they cross under <br />roads. Expansion joints would be placed at approximately 0.5- to 1-mile intervals along the <br />pipeline. Soil would be backfilled promptly into the trench following pipeline installation. <br />There would be 6 inches of bedding under the pipe, 12 to 24 inches of subsoil, and 30 to 36 <br />inches of topsoil and/or subsoil, as available, above the pipe. The pipeline would be constructed <br />in three segments, and construction is expected to take 120 to 150 days to complete. Pipeline <br />inspections would occur on an occasional, as-needed basis to inspect block valves, meters, etc. <br />There would be four road crossings that would require boring: <br />• Rio Blanco County Road 5 neaz the two crossings of Piceance Creek <br />• The road up Collins Gulch <br />• Garfield County Road 215 paralleling Pazachute Creek. <br />' The pipeline would be buried 4 feet deep at each road crossing, in accordance with USDOT <br />specifications. The pipes would be placed in sepazate bores 10 feet apart under the roads. The <br />construction ROW would flare somewhat to allow construction activities at the road crossings. <br />' In addition, the pipelines would cross four gravel roads. These roads would be open cut, similar <br />' 2-13 <br />