Los Coches Low Flow Urban Runoff Diversion to Sewer Project

2 Documents in Project


SCH Number
Lead Agency
San Diego County
Document Title
Los Coches Low Flow Urban Runoff Diversion to Sewer Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
public roadway
Document Description
The project is located on Los Coches Road between Via Diego and Ha Hana Road in the unincorporated community of Lakeside in San Diego County. An existing 30-inch reinforced concrete pipe (RCP) is located under Los Coches Road, which collects storm water runoff and discharges into a reinforced concrete triple box (RCB) culvert at Los Coches Creek. During the dry season, runoff from irrigation and other urban sources flows into the 30-inch RCP without receiving water quality treatment. The proposed Los Coches Low Flow Urban Runoff Diversion to Sewer Project would capture and divert dry weather flows to an existing County sewer line using a gravity flow system allowing the runoff water to be treated. The goal of the project is to improve water quality by reducing the non-storm water flows from entering the municipal separate storm sewer system (MS4) within the County road right-of-way.

Contact Information

Kimberly Jones
Agency Name
County of San Diego
Job Title
Land Use/Environmental Planner III
Contact Types
Lead/Public Agency


San Diego
Cross Streets
Los Coches Road / Via Diego
Total Acres
Parcel #
none (in roadway)
State Highways
SR-67, I-8
Lakeside Elementary, Lemon Crest Elementary
Los Coches Creek, San Diego River

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Parks and Recreation, California Department of Transportation, District 11 (DOT), California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, San Diego Region 9 (RWQCB), California San Diego River Conservancy (SDRC), California State Lands Commission (SLC), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Divison of Financial Assistance, California Department of Fish and Wildlife, South Coast Region 5 (CDFW)
State Reviewing Agency Comments
California Department of Fish and Wildlife, South Coast Region 5 (CDFW)
Development Types
Other (Storm water infrastructure)
Local Actions
Public infrastructure
Project Issues
Biological Resources, Wetland/Riparian
Local Review Period Start
Local Review Period End


Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

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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