Fish & Wildlife 3 (Napa)
(California Department of Fish and Wildlife, Region 3)
Doornenbal Discharge Pipe Installation
NOE - Notice of Exemption
This project is limited to the installation of a 16-inch diameter steel wall irrigation pipe coated with liquid epoxy. The pipe will be installed within the landside slope of the levee and through the levee crown. The new pipe will be trenched into the levee landside slope and crown and covered with 12-inch minimum imported fill material. At the levee crown the pipe will be placed with the invert at or above the 100 year flood elevation at +21.0 feet (NAVD 88). On the waterside levee slope, below the 100 year base flood elevation, the pipe will be placed along the surface of the levee on the existing rip rap. The pipe will be anchored to one 18-inch diameter concrete pile in the channel. The pipe will extend approximately 5 feet below the mean low water line. Issuance of a Streambed Alteration Agreement No. 1600-2013-0388-R3 is pursuant to Fish and Game Code Section 1602.
Project involves the new construction of an irrigation pipe. The project will not involve the removal of healthy, mature, scenic trees. No significant effects to the environment are expected to results from this activity.