Old Mission Dam Maintenance Dredging

Document Description: CDFW is intending to execute a Lake and Streambed Alteration Agreement pursuant to Section 1602 of the Fish and Game Code (# 1600-2019-0078-R5) to the project applicant, City of San Diego. The project proposes annual vegetation removal in order to prevent the establishment of vegetation within the maintenance area and dredging on an as needed basis when there is at least 2 feet of sediment accumulation behind the dam. If water is flowing during a maintenance activity, temporary diversion structures will be installed upstream of the work area to divert the flow around the work area. Dredging will occur by staging a backhoe on an unvegetated sand bar to remove accumulated sediments from behind the dam and stockpile them on bare ground outside the river. A skid-steer/bobcat will then be used to move the material from the stockpile to a dump truck. This project is a continuation of activities previously authorized under Streambed Alteration Agreement R5-2002-0069, which has expired, and will be conducted within the same 0.53-acre footprint. In that previous Agreement, the impacts were considered permanent in anticipation of periodic disturbance from ongoing maintenance activities. and mitigated accordingly.

Contact Information: Kelly Fisher
California Department of Fish and Wildlife (CDFW)
3883 Ruffin Road
San Diego, CA 92123
Phone : (858) 467-4207

Coordinates: 32.8398333°'"N 117.04304167°'"W
Cities: San Diego
Counties: San Diego
Parcel #: 383-021-15 and 383-010-04
Township: 15S
Range: 2W
Base: SBM
Other Location Info: The project is located within the bed, channel, and bank of the San Diego River immediately upstream of the Old Mission Dam in the Mission Trails regional Park, in the City of San Diego, County of San Diego, State of California; U.S. Geological Survey (USGS) map La Mesa quadrangle; Calwater 4907.120000.

Final Environmental Document Available at: This is to certify that the Negative Declaration prepared by the Lead Agency for the project is available to the General Public at the office location listed above for the Lead Agency. CDFW's administrative record of proceedings is available at the CDFW office above.

(1) The project will have a significant impact on the environment: Yes
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA: No
(2b) A Negative Declaration was prepared for this project pursuant to the provisions of CEQA: Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA: No
(3) Mitigated measures were made a condition of the approval of the project: Yes
(4) A mitigation reporting or monitoring plan was adopted for this project: N/A
(5) A Statement of Overriding Considerations was adopted for this project: No
(6) Findings were made pursuant to the provisions of CEQA: No