Cottonwood Canal Headgate Pipeline Replacement
Summary
SCH Number
2005028203
Public Agency
Yolo County Flood Control and Water Conservation District
Document Title
Cottonwood Canal Headgate Pipeline Replacement
Document Type
NOE - Notice of Exemption
Received
Posted
2/14/2005
Document Description
The proposed project would replace a collapsed pipe that serves the Cottonwood Canal Headgate. The Cottonwood Headgate controls irrigation water flow to approximately 8,245 acres of farmland in the District's services area. Currently, a portion of the pipe or culvert section of the headgate structure has collapsed and presents a safety hazard to vehicular traffic as well as people operating the headgate. In addition, the collapse has limited the ability of the District to serve its existing customers that rely on deliveries that are distributed through the Cottonwood headgate.
The replacement of the pipeline/culvert would require excavating the existing 48-inch diameter corrugated metal pipe at the back of the existing headgate structure and assessing its condition. Based upon the findings of the investigation, the pipe will be replaced, or temporarily repaired, to ensure its integrity during the 2005 irrigation season. Repair of the pipe and backfilling with lean concrete fill. Replacement of the pipe would involve removal of the existing pipe and connection of a new 48-inch diameter corrugated metal pipe to the back of the headgate structure. The new pipe would be a total of 52 feet long. The repaired facility would be backfilled with native material or Caltrans Class II aggregate base.
Contact Information
Name
Tim O'Halloran
Agency Name
Yolo County Flood Control And Water Conservation District
Contact Types
Lead/Public Agency
Phone
Location
Counties
Yolo
Other Location Info
Near Madison
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Section 15302
Reasons for Exemption
The proposed replacement of the collapsed pipeline/culvert at the Cottonwood would not increase capacity of the facility to deliver water to downstream users beyond that which currently exists and would not expand the existing use.
The nature of the activities, combined with their location well within the existing facility, would result in negligible impact on air quality, noise levels, water quality, erosion potential, cultural resources, and biological resources.
The visual characteristics of the site would not be substantially altered, no change in land use would occur, people would not be exposed to floods as a result of the project, no increase in population, housing or economic changes would occur as no growth-inducement would result from the project, no destruction of agricultural land would occur, and no increase in demand for public utilities or services such as police, fire, schools, parks, water, wastewater, or solid waste would result from the proposed project. The project site currently supports developed water conveyance facilities with no significant biological or cultural resources present that would be affected by the construction or operation of the proposed facilities.
The project consists of the replacement of a structure with a new structure that will be located on the same site as the structure replaced and will have substantially the same purpose and capacity as the structure replaced.
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