Interceptor Force Trunk Main Rehabilitation Project

2 Documents in Project


SCH Number
Lead Agency
City of Mountain View
Document Title
Interceptor Force Trunk Main Rehabilitation Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Park/Regional Park/Public Facility
Document Description
The City of Mountain View is proposing a project to rehabilitate a 42-inch interceptor force trunk main that is the City's major sewer discharge line to the Palo Alto Regional Water Quality Control Plant (PARWQCP) and serves as a critical link in the City's sewer collection system. Upon routine inspection in December 2014, the interceptor trunk main leaving the sewer pump station (SPS) was found severely deteriorated. Emergency repairs were made at the time to the most critically affected section of trunk main, an approximately 50 linear foot section immediately downstream of the SPS which was repaired with a 36-inch Vylon liner. Further inspection of the entire interceptor trunk main was completed in September 2015. The results revealed 600 feet of the trunk main interior, downstream of the flanged outlet manhole is severely degraded, characterized by exposed and corroding reinforcing steel. The currently proposed project will repair (through rehabilitation or replacement) approximately 1,083 linear feet of the interceptor trunk main between manhole 3 (#B3-022) and the end of the Vylon liner. The project also includes the installation of an additional manhole, manhole 4 (MH4), and rehabilitation of the flanged manhole outlet (#B4-030).

Contact Information

Ariel Morales
Agency Name
Lead Agency
Contact Types
Lead/Public Agency


Mountain View
Santa Clara
Cross Streets
North Shoreline Boulevard
Parcel #
116-05-076, 116-04-007
State Highways
Palo Alto, Moffett Field
Powell School, Palo Alto Prep, Meira Academy, Kehillah Jewish Sc
Penitencia Creek

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, Bay Delta Region 3 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 4 (DOT), California Department of Transportation, Division of Aeronautics (DOT), California Department of Transportation, Division of Transportation Planning (DOT), California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), Department of Toxic Substances Control, Office of Historic Preservation, San Francisco Bay Conservation and Development Commission (BCDC), State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Divison of Financial Assistance
Development Types
Other (sewer infrastructure rehabilitation)
Local Actions
sewer rehabilitation
Project Issues
Biological Resources, Cultural Resources, Geology/Soils


Notice of Completion [NOC] Transmittal form

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