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Davis Point, which is a steep slope that is not in close proximity to any underground pipelines (see Section 3.1.5). • Pipelines and Facilities Crossings: Prior to conducting the centerline survey, crews usually locate buried facilities to avoid damaging them during the construction process. The Yankee Gulch Project pipelines will generally cross beneath other pipelines and other utility lines at a 45 degree angle. A backhce and hand labor is used to excavate the pipeline trench in such areas to allow passage of the new pipeline under the existing pipelines. Additional TUAs will be necessar;~ for these azeas. Affected ROW holders will be contacted prior to construction (see Section 3.1.1). Locations of adjacent pipelines will be confirmed using the One-Call 'system or similaz underground utilities location system. This is intended to locate all points of intersection with adjacent pipelines by using "pot holes° to physically expose the pipe. Pot holes will be hand excavated or dug with a vacuum truck capable of exposing the pipe.. Vacuum trucks have been used primarily in cleaning manholes for sewer systems but have also proven effective in locating pipelines. • Washes and Intermittent Sireams Crossings: Numerous crossings of dry washes and intermittent stream channels will be trenched using backhce equipment, where practical. TUAs will be required at each stream or channel- crossing. If necessary, the banks of larger channels will be excavated to create a slope gentle enough to allow equipment to progress to the floor of the wash. Soil will be stockpiled at the top of the banks of the channel. After the pipe is installed, the soil will be used to restore the banks of the channel to a stable configuration. • Perennial Streams and Irrigation Ditch Crossings: Proposed perennial stream crossing locations include Piceance Creek (two locations), Stewart Gulch (two locations), and Pazachute Creek (two locations). There will also be a small wetland crossing in Middle Fork Stewart (sulch. There will be no "river" crossings for this project. All of the proposed stream crossings are anticipated to be completed by open-cut constmclaon using a backhce. It is not anticipated that conventional bore or horizontal directional drilling would be used for any of the stream crossings. The current plan for crossing perennial streams does not rnquire water diversions. If used, water diversion techniques for stream crossings would be either ponding or temporary diversion. Each water diversion decision will be made based on the flow conditions at the time of construction. • ~Pe~1e rlan or Devek,pment ~ Yankee Gulch Sodium Mv~nak PmjecY Ametian Soda, LLP.