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<br />(~ <br />r- <br />- <br />o <br />"_-:) <br />~) <br /> <br />CHAPTER II <br /> <br />DESCRIPTION OF ALTERNATIVES <br /> <br />added to control the canal water surface elevation. Existing O&M roads <br />would be replaced. The design flow for the Stubb Ditch would be <br />approximately 20 cfs. The pipe size would vary from 24 to 42 inches in <br />diameter. Concrete pipe would be used for 30 to 42 inch portions of the <br />pipeline, and PVC pipe would be used for diameters ranging from 24 to 27 <br />inches. <br /> <br />There would be three places where Reclamation would deviate from the <br />existing Stubb Ditch alignment; all located just west of the Clifton 1-70 <br />interchange. <br /> <br />Price Ditch Construction Activities.--The Price Ditch would be filled in <br />and recontoured to meet the existing ground to the extent that fill <br />material is readily available in the immediate vicinity of the ditch. <br />Portions of the existing rights-of-way would be used for the additional <br />lateral replacement. All concrete removed would be buried at approved <br />sites. <br /> <br />Additional Lateral Reolacement.--Preliminary designs of this alternative <br />found that nearly all of the districts' laterals served by the East End <br />Government Highline Canal and the laterals within the PID service area, <br />would need to be replaced and enlarged due to the new hydraulic conditions <br />created by removing the Price Ditch. There are approximately 87 miles of <br />laterals in these two areas, 36 of which are currently improved. As part <br />of the Grand Valley Unit, the unimproved 51 miles were scheduled for <br />improvement. Under the combination alternative, the additional 36 miles of <br />existing improvements would also be replaced. <br /> <br />Pumoino Plant.--With the removal of the Price Ditch, water could no longer <br />be dropped through the price-Stubb Pumping Plant. Consequently, a new <br />electrically driven plant would be installed. The plant would need to <br />deliver a peak of 22 cfs at a total dynamic head of about 35 feet. The <br />resulting plant would be about 120 horsepower. Every effort would be made <br />to use the existing piping from the existing pumping plant to the Stubb <br />Ditch. <br /> <br />Fish and Wildlife Measures <br /> <br />Fish and Wildlife measures were not q~antified for this alternative but <br />would consist of acquiring and developing lands to replace lost habitat. <br /> <br />Price and Stubb Ditch Cross-Drainaoe and Tailwater Desions <br /> <br />Cross-drainage and tailwater designs would be the same as for the <br />recommended plan. However, all tailwater that formerly returned into the <br />Price Ditch would have to be routed to the nearest natural drain. <br /> <br />Safety Features <br /> <br />Safety features along the Price Ditch would no longer be required with this <br />alternative. <br /> <br />13 <br />