Valencia Water Reclamation Plant Middle Section Retaining Wall Ground Improvement Project

Summary

SCH Number
2023110644
Lead Agency
Los Angeles County Sanitation District
Document Title
Valencia Water Reclamation Plant Middle Section Retaining Wall Ground Improvement Project
Document Type
NOP - Notice of Preparation of a Draft EIR
Received
Document Description
Santa Clarita Valley Sanitation District (SCVSD) has determined through previous studies that under a Capital Storm event, the Valencia Water Reclamation Plant (VWRP) has the potential to be exposed to erosion along approximately 1,000 feet of the middle section of the existing retaining wall and along the VWRP boundary after flooding due to scour. If the wall is undermined by scour or damaged by a significant earthquake event, VWRP facilities may be damaged or destroyed. The proposed project includes a new ground retaining wall structure to fortify the middle section of the wall and protect the VWRP during a flood scour event and design-level earthquake. In addition, the proposed project would include updates to two existing outfall structures. Temporary construction work would occur along the VWRP boundary as well as an existing Significant Ecological Area (SEA) and California Department of Fish and Wildlife easement west of the VWRP. An operations and maintenance area would be cleared around the existing SCVSD outfall easements for continued use during long-term maintenance of the outfall structures.

Contact Information

Name
Mandy Huffman
Agency Name
Los Angeles County Sanitation Districts--Santa Clarita Valley Sanitation District
Job Title
Environmental Planner
Contact Types
Lead/Public Agency

Location

Cities
Santa Clarita
Counties
Los Angeles
Regions
Southern California
Cross Streets
28185 The Old Road / Rye Canyon Road
Zip
90601
Total Acres
3.6
Parcel #
2826-005-902, 2826-005-012
State Highways
I-5, SR-126
Schools
Oak Hills Elementary, Rancho Pico Junior High School
Waterways
Santa Clara River
Township
3N
Range
16W
Section
00

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Water Resources (DWR), California Highway Patrol (CHP), California Natural Resources Agency, California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB), 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, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance, California Native American Heritage Commission (NAHC), California Department of Transportation, District 7 (DOT), California Department of Fish and Wildlife, South Coast Region 5 (CDFW)
State Reviewing Agency Comments
California Native American Heritage Commission (NAHC), California Department of Transportation, District 7 (DOT), California Department of Fish and Wildlife, South Coast Region 5 (CDFW)
Development Types
Waste Treatment:Other (Water reclamation plant)(MGD 21.6)
Local Actions
Water reclamation plant upgrade
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire
Local Review Period Start
Local Review Period End

Attachments

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