Rio Vista Water Treatment Plant (RVWTP) Sewer Line Project


SCH Number
Lead Agency
Santa Clarita Valley Water Agency
Document Title
Rio Vista Water Treatment Plant (RVWTP) Sewer Line Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Open Space (OS)
Document Description
The RVWTP Sewer Line Project (herein referred to as “proposed project” or “project”) would replace an existing eight-inch sewer line that connects the RVWTP to the local sewer system. The RVWTP’s sewer system ties into an eight-inch sewer line approximately 0.2-mile northwest of the RVWTP. This segment runs generally northwest between the RVWTP and an existing connection point to the local sewer pipeline system. The proposed pipeline would follow an existing unpaved access roadway between the RVWTP and the existing connection point to the local sewer pipeline system to avoid steep hillsides and impacts related to erosion. This new alignment would be located east of the existing alignment and is approximately 1,900 linear feet in length. The project also includes upsizing approximately 350 linear feet of an existing sewer pipeline from six inches to eight inches in diameter. This pipeline is located within internal roadways at the RVWTP. Implementation of the project will include excavation to install the new pipeline segment and replace the existing pipeline segment. The project would also pave the existing dirt access road to a width of 16 feet. The paved road would extend from a paved driveway within the RVWTP, along the existing dirt access road to an existing paved parking area at the south side of Central Park. The project would require vegetation removal, tree trimming, and tree removal along the pipeline segment, with an anticipated total of four trees to be removed.

Contact Information

Amy Anderson
Agency Name
Santa Clarita Valley Water Agency
Job Title
Project Manager
Contact Types
Lead/Public Agency


Santa Clarita
Los Angeles
Southern California
Cross Streets
Bouquet Canyon Road and Central Park
Parcel #
Santa Clara River

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 Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, District 7 (DOT), California Department of Water Resources (DWR), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), 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
Development Types
Other (Sewer pipeline (2,250 LF total)), Transportation:Other (Paved access roadway)
Local Actions
Project Approval
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Economics/Jobs, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Septic System, Sewer Capacity, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire
Local Review Period Start
Local Review Period End


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form

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 or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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