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C150243 PIF Documents
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C150243 PIF Documents
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Last modified
8/30/2016 11:32:30 AM
Creation date
8/30/2016 11:32:15 AM
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Loan Projects
Contract/PO #
C150243
Contractor Name
Aurora, City of
Contract Type
Loan
Loan Projects - Doc Type
Contract Documents
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Responsible Environmental Planning <br /> In all planning and design activities for the PWP,Aurora Water and its environmental <br /> consultant have coordinated and planned extensively to ensure compliance with federal and <br /> state laws such as the Endangered Species Act(ESA),Migratory Bird Treaty Act(MBTA), <br /> Clean Water Act(CWA),National and State Historic Preservation Acts (NHPA,SHPA),and <br /> the regulations administered by the United States Fish and Wildlife Service (USFWS), <br /> Colorado Division of Wildlife (CDOW),Army Corps of Engineers (ACOE),and the State <br /> Historic Preservation Office (SHPO). Potential critical habitats for Preble's Meadow <br /> Jumping Mouse (PMJM),raptors,prairie dogs,and burrowing owls have been mapped,and <br /> the construction sequencing and activity constraints associated with these areas have been <br /> identified. Potential Waters of the United States and Wetlands have been evaluated to <br /> determine appropriate preservation requirements during construction. In addition,the <br /> conveyance system alignment, including a 1000-foot buffer,has been evaluated for <br /> paleontologic and other cultural resources of significance. Consultation with the State of <br /> Colorado's Historic Preservation Officer has identified acceptable mitigation measures for <br /> pipeline construction. The PWP has been strategically designed to avoid impacts to <br /> environmental and natural resources,as exemplified by the use of trenchless crossings as <br /> needed to avoid impacts to wetlands or Waters of the US,eliminating the need for any <br /> federal permits for construction of the PWP. <br /> Alternatives Analysis for the Conveyance System <br /> In 2004,Aurora Water and its team of professionals began identifying and evaluating <br /> alternative alignments for the conveyance system which will deliver water from the North <br /> Campus natural purification facilities to the South Campus.Three alternative preliminary <br /> pipeline alignments were carried forward from the initial screening process led by MWH in <br /> 2004: <br /> Transmission Alternative 1-E-470 Alignment <br /> Transmission Alternative 2-DIA East Alignment <br /> Transmission Alternative 3-Monaghan Road Alignment. <br /> All three alignments start at the North Campus natural purification facilities located near <br /> Brighton. Each route offered distinct advantages pertaining to pipeline length; <br /> environmental factors;number of highway,railroad,irrigation ditch, stream,and utility <br /> crossings;number of landowners;and the extent of developed land traversed by the <br /> pipeline.Based on evaluation of the three alternatives,Alternative 1,the E-470 alignment, <br /> was carried forward as the preferred pipeline alignment.This alternative was selected <br /> primarily to streamline right-of-way acquisition and because it presented the fewest <br /> environmental impacts. <br /> Pumping stations are needed to lift the water approximately 1000 feet from the North <br /> Campus to the purification facilities at the South Campus (also known as the Aurora <br /> Reservoir Water Purification Facility or ARWPF). Locations for the pumping stations were <br /> identified at interim points along the conveyance system so that the same pump motor <br /> horsepower would be required at each of the pumping stations. Alternative sites were then <br />
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