C153795 Feasibility Study - Laserfiche WebLink

Home Browse Search

I I I I I I I I I I I I I I I I I I I Alternatives Evaluated A range of alternatives were considered including 1) don't build the project, 2) replace the existing culverts with a 57" X 38" arch CMP culvert, and 3) replace the existing culverts with a 42" round pipe. A subjective evaluation of the alternatives follows: 1. Don't build the project: No action taken to solve this problem will leave the Company liable for damage resulting from flooding of the residences. In addition, if the existing culverts collapse, it will not be possible to deliver water to lands north of section 11. This alternative is not considered feasible by the Company. 2. Replace the existing culverts with a 57" X 38" arch CMP: 480 feet of new pipe would be installed, along with an inlet and an outlet structure. The pipe would have a capacity of 75 CFS, large enough to handle all ditch deliveries, and. flood water during most flooding events. This size pipe would fit the bury requirements of the site, and the cost would be about $65,000. This alternative is feasible, but is not preferred by the Company. 3. Replace the existing culverts with a 42" pipe: 480 feet of ribbed polyethylene pipe would be installed, along with an inlet and an outlet structure. The pipe, smooth on the inside and ribbed on the outside, would also have a capacity of 75 CFS. It would be large enough to handle all ditch deliveries, and flood water during most flooding events, and would fit the bury requirements of the site. The cost would be $48,000. This alternative is feasible, and is preferred by the Company. The Natural Resources Conservation Service (NRCS) has provided technical engineering assistance in the evaluation of the above alternatives. See Appendix B. The Selected Project The Company has selected Alternative #3. 480 feet of ribbed polyethylene pipe will be installed, along with an inlet and an Feasibility Study Farmers Independent Ditch Rehabilitation October 1997 4