SOCWA Coastal Treatment Plan Access Bridge Protection
4 Documents in Project
Summary
SCH Number
2001104007
Lead Agency
United States Army, Army Corps of Engineers
(USACE)
Document Title
SOCWA Coastal Treatment Plan Access Bridge Protection
Document Type
NOD - Notice of Determination
Received
Posted
1/14/2005
Present Land Use
N/A
Document Description
The U.S. Army Corps of Engineers propose to implement measures designed to stabilize the SOCWA bridge spanning Aliso Creek in southwestern Orange County. The proposed project consists of a sloping grouted stone grade control structure protecting the invert beneath the bridge. The grade control structure, which as a crest elevation at the upstream end of 8.8 m, slopes downstream at a two percent grade for about 18.5 m. At the upstream end of the structure, a sloping grouted stone cutoff wall will extend to a depth of 2.4 m at a slope of 2H:1V; at the downstream end a similar cutoff wall would be constructed to the same depth at a slope of 3H:1V. The structure would incorporate design features to maintain connectivity between aquatic habitats by creating a low flow passage channel. This would consist of a low flow center channel with a width of 2.4 m and a maximum slope of 10 percent. Large stones would be staggered in the center channel to dissipate energy and to create small eddies and pools for the fish to rest in their passage upstream.
Contact Information
Name
Brian Peck
Agency Name
South Orange County Wastewater Authority
Contact Types
Lead/Public Agency
Phone
Location
Cities
Laguna Niguel
Counties
Orange
Cross Streets
Aliso Canyon Road / AWMA Road
Zip
92677
Parcel #
N/A
State Highways
CA-1
Railways
N/A
Airports
N/A
Schools
N/A
Waterways
Aliso Creek
Township
7S
Range
8W
Section
32
Base
SBM
Notice of Determination
Approving Agency
South Orange County Waste Authority Board of Directors
Approving Agency Role
Lead Agency
Approved On
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Mitigated or 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
N/A
Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.