Laguna Canyon Creek Erosion Control and Restoration Project

4 Documents in Project

Summary

SCH Number
2014121027
Lead Agency
Laguna Beach, City of (City of Laguna Beach)
Document Title
Laguna Canyon Creek Erosion Control and Restoration Project
Document Type
MND - Mitigated Negative Declaration
Received

Document Description
The City of Laguna Beach Public Works Department is proposing the project, in order to restore Laguna Canyon Creek's hydrological and biological functions, and values along the 270 lineal feet of creek on City property at 20612 Laguna Canyon Road. The project is specifically intended to limit erosion and increase channel capacity. The project proposes to remove accumulated sediment within the Laguna Canyon Creek channel and install articulating concrete block (ACB) (Armorflex) lining along channel banks and other improvements. The project's proposed improvements/modification include: ACB Armorflex lining along both channel banks immediately north of the existing vehicular access bridge for reinforcement and protection; relocation of the existing pedestrian bridge to the south, immediately adjacent to the existing vehicular access bridge; an approximately 10-foot long, poured-in-place concrete transition structure to the existing reinforced concrete boxes (RCB), underneath the relocated pedestrian bridge, to convey flows from the creek widening underneath the vehicular access bridge; an approximately 4.5-foot high concrete retaining wall along the western channel bank, adjacent to the parking lot; bio-engineered slope protection (riprap with cuttings and three bendway weirs) along the toe of the eastern slope, immediately west of the Mammal Center; stream bank recontouring with understory plantings on the west slope, south of the vehicular access bridge; and remove non-native plant species and replace with native species (i.e. herbaceous plants and larger canopy tree species) throughout to address erosion and habitat loss.

Contact Information
Wade Brown
City of Laguna Beach
505 Forest Avenue
Laguna Beach, CA 92651

949 497 0360

Location

Coordinates
33°34'24.22"N 117°45'45.19"W
Cities
Laguna Beach
Counties
Orange
Cross Streets
Laguna Canyon Road / Sun Valley Drive
Zip
92651
Total Acres
.29
State Highways
SR-73
Waterways
Laguna Creek
Township
7S
Range
8W
Section
7
Base
SBB&M

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (Erosion Control Type)
Local Action
Other Action Site Plan Other Action: Emergency CDP
Project Issues
Other Issues Cumulative Effects Landuse Growth Inducing Wildlife Wetland/Riparian Water Supply Water Quality Vegetation Traffic/Circulation Toxic/Hazardous Solid Waste Soil Erosion/Compaction/Grading Sewer Capacity Septic System Schools/Universities Recreation/Parks Public Services Population/Housing Balance Noise Minerals Geologic/Seismic Forest Land/Fire Hazard Flood Plain/Flooding Drainage/Absorption Coastal Zone Biological Resources Archaeologic-Historic Air Quality Agricultural Land Aesthetic/Visual Other Issues: GHGE
Reviewing Agencies
Caltrans, District 12 Air Resources Board California Coastal Commission California Department of Parks and Recreation Department of Fish and Wildlife, Region 5 Department of Water Resources Native American Heritage Commission Office of Emergency Services, California Office of Historic Preservation Regional Water Quality Control Board, Region 9 Resources Agency State Lands Commission State Water Resources Control Board, Divison of Financial Assistance
Download CSV New Search