Fesability Study

• Contractor Name: Pine River Irrigation District
• Contract Type: Loan
• Loan Projects - Doc Type: Feasibility Study

Each unit shall have hollow fiber (capillary) membranes operating in a direct (dead-
end) feed configuration with flow applied to the outside of the fibers and filtrate
(permeate) delivered from inside the fibers. The fibers are housed in vertical cylinders.
48 cylinders per module are provided. Each cylinder is rated to provide 7.5 gpm.
Each unit shall be back washed with compressed air.
The treatment plant will be constructed in a metal building located east of the collection
wells/gallery and out of the 100 year flood plain. Pressure to operate the filtration units will be
provided by pumps at the wells/gallery.
Pipeline Routes
A main pipeline will extend from the treatment plant to the intersection of US Highway 160 and
the Bayfield bypass west of Bayfield. A branch of this line will serve a 1 million gallon tank
expected to be located on a hill north and a little west of the treatment plant. There will be a
pump at the treatment plant to lift water to the tank and pressurize the distribution system.
At the Highway 160 and bypass intersection one pipeline will be routed southwest to Oxford and
the second line will continue west generally parallel to US Highway 160.
Oxford Pipeline - The Oxford pipeline begins at the main trunkline on Highway 160, extends
back to the east about one mile then south along County Road 509 about two miles to County
Road 510. The pipeline continues along various county roads through Oxford then south 4
miles. The pipeline is planned to be 10 inches in diameter for the first one fourth and 8 inch
diameter for all of the remaining distance. Two pressure reducing valves will be necessary to
maintain pressure less than 140 psi.
Highway 160 Corridor Pipeline - A 12 inch diameter pipeline will extend west parallel to
Highway 160 to Grandview. Small 8 inch pipelines will branch from the main line to serve
small subdivisions and clusters of homes. An 8 inch pipeline is included one mile south along
Highway 172 (to the intersection of Highway 172 and County Road 221) to serve all of the
Grandview area.
Florida Mesa Pipeline - This 8 inch pipeline will begin at the intersection of Highway 172 and
County Road 221, extend west along County Road 221 then follow county roads south to serve a
large portion of the west Florida Mesa area.
Branch Pipelines —Various 8 inch branch pipelines will extend from the major lines.
These pipelines are shown on the location map (not labeled) and listed in the construction cost
estimates included in Appendix d. The minimum diameter pipeline size is 8 inches in order to
provide at least 500 gpm of fire flow at all locations. The only pump in the system is at the
treatment plant.
Two additional tank sites are located on the Oxford Pipeline and the Highway 160 pipeline. One
or both of these locations may be utilized instead of the site near the treatment plant.
12