City of Del Mar Sand Compatibility and Opportunistic Use Program

Summary

SCH Number
2020040181
Lead Agency
Del Mar, City of (City of Del Mar)
Document Title
City of Del Mar Sand Compatibility and Opportunistic Use Program
Document Type
MND - Mitigated Negative Declaration
Received
Project Applicant
City of Del Mar
Present Land Use
Public beaches

Document Description
Beaches in north San Diego County have been narrowing over the last 60 to 80 years due to reductions in natural sand supply from upcoast and upstream. The City is working to restore the sediment supply to its coast by direct sand placement through the implementation of a SCOUP. The SCOUP outlines a plan to capitalize on opportunities to obtain beach-quality sand from construction, development, maintenance, or dredging projects in the region for placement as beach nourishment within the City. The SCOUP presents a streamlined program of sand placement at specified locations in the City to allow quick and efficient placement of material as it becomes available. The program identifies a maximum envelope within which sand may be placed as it becomes available through the implementation of individual projects, usually of relatively small volume. The envelope would extend from the Del Mar bluffs in the north (north of the San Dieguito River inlet) to Powerhouse Park (north of 15th Street towards the center of Del Mar’s shoreline). The proposed envelope extends 5,750 feet; however, individual opportunistic placement projects would take place in smaller footprints within the proposed overall SCOUP envelope. Sand volumes available for nourishment at any given time may range from 500 cy to the maximum placement of 180,000 cy/5 years. The beach fill design for the SCOUP includes two different nourishment approaches: beach berm and surf zone placement. Sand material is anticipated to be from local or nearby contributions, such as from upland construction, development, or dredging/excavation projects (e.g., wetland restoration, or river inlet/detention basin maintenance). The San Dieguito River is the most likely sand source for beach nourishment in Del Mar. The City would require sampling and analysis of the material under a Sampling and Analysis Plan & Report to be approved by the U.S. Army Corps of Engineers, U.S. Environmental Protection Agency, and Regional Water Quality Control Board prior to placement on the beach. Sand could be delivered either by truck or pipeline, depending on the material source. Nourishment sites would be monitored over time so that the program may be modified, with agency consent, for maximum environmental sensitivity while also maximizing nourishment of the beach and littoral zone. Monitoring metrics would include beach profiles, surf conditions, turbidity, grunion, and trash/debris removal. This MND addresses impacts associated with placement of material within the beach nourishment envelope, as well as extraction of material from maintenance activities, such as detention/sedimentation basins, dams, or the San Dieguito River inlet channel.

Contact Information
Amanda Lee
City of Del Mar
1050 Camino del Mar
Del Mar, CA 92014

Phone : (858) 755-9313
alee@delmar.ca.us

Location

Cities
Del Mar
Counties
San Diego
Regions
Southern California
Zip
92014
Waterways
San Dieguito River
Other Location Info
City of Del Mar beaches north of 15th Street

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (Beach nourishment)
Local Action
Other Action
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Coastal Zone Forest Land/Fire Hazard Geologic/Seismic Greenhouse Gas Emissions Minerals Noise Population/Housing Balance Public Services Recreation/Parks Soil Erosion/Compaction/Grading Toxic/Hazardous Traffic/Circulation Tribal Cultural Resources Vegetation Water Quality Wetland/Riparian Land Use Cumulative Effects Other
Reviewing Agencies
California Air Resources Board California Coastal Commission California Department of Conservation California Department of Fish and Wildlife, Marin Region 7 California Department of Fish and Wildlife, South Coast Region 5 California Department of Parks and Recreation California Department of State Parks, Division of Boating and Waterways California Department of Transportation, District 11 California Department of Water Resources California Governor's Office of Emergency Services California Highway Patrol California Native American Heritage Commission California Natural Resources Agency California Public Utilities Commission California Regional Water Quality Control Board, San Diego Region 9 California State Lands Commission Department of Toxic Substances Control Office of Historic Preservation State Water Resources Control Board, Division of Water Quality

Attachments

Environmental Document
Del Mar SCOUP Public Review_April 2020   PDF 2632 K NOI_SCOUP_Final   PDF 100 K SCH Summary Form   PDF 638 K
NOC
NOC_SCOUP_signed 4   PDF 314 K

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, 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. For more information, please visit OPR’s Accessibility Site.

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