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Pipeline Segment 3 Alignment <br />The Monaghan Road alignment for Segment 3 was selected over the Hudson Road corridor, <br />because the Hudson Road corridor would have required four more miles of pipeline and <br />three additional special crossings. In addition, the Monaghan Road alignment is shorter <br />than the Hudson alignment for Segment 3. The E-470 alignment for Segment 3 was <br />eliminated due to the costly ROW acquisitions it would require. Refer to Figure 8 below for <br />an overview of the selected Segment 3 alignment along Monaghan Road. <br />Portions of the selected pipeline alignment are within the City municipal limits and portions <br />are outside, in Arapahoe County. There is no improved roadway along the corridor, but the <br />corridor can be accessed at Jewell Avenue, Yale Avenue and Quincy Avenue. A short <br />section of a two-lane roadway along Monaghan Road between Hampden Avenue and <br />Quincy Avenue provides access to a State of Colorado Correctional Facility. Monaghan <br />Road is designated as a principal arterial in the City's Northeast Area Transportation Study, <br />providing adequate widths for the pipeline construction (144 feet of ROW). <br />This alignment avoids a problematic high-point in the hydraulic profile of the pipeline that <br />was included in an earlier alternative. In addition, the selected alignment is preferred <br />because it enters the ARWPF site from the north and west, closer to the raw water forebay, <br />rather than from the north and east. <br />The Monaghan road alignment was also selected to avoid utility conflicts. Overhead power <br />lines and buried fiber-optic lines must be crossed, but do not pose significant construction <br />conflicts. Powhaton Road is also now being evaluated as an alternative to the Monaghan <br />Road alignment, with the potential to save approximately 80001inear feet of pipe length. <br />Powhaton Road was originally excluded from consideration because the City was reserving <br />that corridor for future water distribution lines. <br />Required Easements and ROW <br />At the north end of the Segment 3 corridor, the proposed alignment follows property lines <br />east of PS-3 toward the Monaghan Road corridor. Rights-of-way for local collector streets <br />along these property lines are approximately 74 feet wide. A 10-foot-wide temporary <br />construction easement will be needed for the typical pipe alignment along the western half <br />of the future Monaghan Road ROW, which is also only 74 feet wide. A minimum width of <br />80 feet will generally be provided for construction contractor working limits. <br />Quincy Avenue has a 110-foot wide ROW and an additional 100-foot wide ingress/egress <br />easement north and south of the centerline, which includes some existing buried telephone <br />utilities. The 60-inch PWP pipeline and will be located along the north side of the roadway <br />within the 100-foot ingress/egress easement, which will provide adequate construction <br />width. In addition, the City of Aurora owns Sections 4 and 9 that adjoin tliis section of <br />Quincy Avenue to the north and south of the alignment. <br />South of Quincy Avenue, the PWP pipeline alignment is within Aurora Water-owned <br />property (the former Murphy property) located between a City-owned 40-foot-wide access <br />easement for the ARWPF and Powhaton Road to the west. <br />20 <br />