County of San Diego Sanitation District: Los Coches Sanitary Sewer Improvements from Maintenance Hole LSMH0555 to LSMH0599 Project
3 Documents in Project
Summary
SCH Number
2020060316
Lead Agency
San Diego County
Document Title
County of San Diego Sanitation District: Los Coches Sanitary Sewer Improvements from Maintenance Hole LSMH0555 to LSMH0599 Project
Document Type
MND - Mitigated Negative Declaration
Received
Document Description
The County of San Diego Sanitation District proposes the Los Coches Sanitary Sewer Improvement Project (proposed project) to improve and stabilize a section of an existing sanitary sewer pipeline. The proposed project will rehabilitate approximately 7,300 feet of an existing sewer collection system pipeline located between maintenance holes LSMH0555 to LSMH0599 below a section of Los Coches Creek. The proposed project follows the alignment of the existing sewer line, which is situated just south of Old Hwy 80 between its intersections with Gaucho Lane to the west and Flinn Crest Street to the east.
The proposed work includes two main elements: installation of a composite lining within the existing pipe using the Cured-in-Place Pipe (CIPP) method. The CIPP liner serves to reinforce the existing pipe by precluding decay and providing additional structure for the pipeline. The second element includes reinforcement of three sections of pipeline through concrete encasement and a cover of Articulated Concrete Block to strengthen the cover and stability of streambed surfaces above the pipe section. These repairs and improvements would rehabilitate and stabilize the long-term safety and reliability of the sewer pipeline to reduce the likelihood of sewage spills and damage caused by pipe material degradation and erosion.
Contact Information
Name
Cynthia Curtis
Agency Name
County of San Diego, Department of Public Works
Contact Types
Lead/Public Agency
Phone
Name
Agency Name
County of San Diego Sanitation District
Contact Types
Project Applicant
Location
Counties
San Diego
Cross Streets
south of Old Hwy 80 b/w intersections with Gaucho Ln. to the west & Flinn Crest Str to the east
Township
15S
Range
1E
Section
31
Notice of Completion
State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Parks and Recreation, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 11 (DOT), California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), 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), Office of Historic Preservation, 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 (Sectional rehabilitation of existing sewer pipeline)
Project Issues
Biological Resources
Attachments
Environmental Document
State Comments
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