Box Canyon Manhole and Road Improvement Project
Summary
SCH Number
2026030536
Lead Agency
City of Thousand Oaks
Document Title
Box Canyon Manhole and Road Improvement Project
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
The Project site contains Public Works Department infrastructure (eight - inch diameter wastewater piping and maintenance access structures) located along the Box Canyon access road, which is reached via Calle Las Trancas, approximately 200 feet northwest of its intersection with Calle Pecos. The area is zoned Open Space (O-S) and has a General Plan land use designation of Open Space.
Document Description
The Project is located within the City of Thousand Oaks and lies primarily within the Arroyo Conejo Open Space area. The Project involves infrastructure upgrades and maintenance activities along the Box Canyon access road, which serves as a critical component of the City of Thousand Oaks (City) Public Works Department wastewater conveyance system. The purpose of the Project is to improve long-term access for maintenance vehicles, improve side canyon drainage transport across the access road, and ensure the continued reliability of the City's wastewater infrastructure. Proposed improvements include the installation of a new manhole and replacement of approximately ten feet of existing asbestos cement eight - inch diameter wastewater piping at the proposed manhole structure to facilitate maintenance and inspection of the wastewater system, and the concrete paving of approximately 260 linear feet of roadway segment of the existing, steep unpaved access road to provide stable, year-round access. To address stormwater management and erosion control, the Project also includes the installation of five new 18-inch storm drain pipelines across the unpaved access road, each with upstream and downstream headwalls, as well as the construction of three additional upstream headwalls for three existing storm drain culverts.
Contact Information
Name
Patrick McCulloch
Agency Name
City of Thousand Oaks Public Works Department
Job Title
Utilities Maintenance Supervisor
Contact Types
Lead/Public Agency / Project Applicant
Phone
Email
Name
Jennifer Johnson
Agency Name
Envicom Corporation
Job Title
Senior Project Manager
Contact Types
Consulting Firm
Phone
Location
Coordinates
Cities
Thousand Oaks
Counties
Ventura
Regions
Southern California
Cross Streets
Calle Las Trancas and Calle Pecos
Zip
91360
Total Acres
0.00021
Parcel #
663038107; 663017205; 663038106, 663001052, 667007207
Schools
Madrona and Redwood Elementary Schools
Waterways
unnamed tributary to Arroyo Conejo
Township
01N
Range
19W
Section
5
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 Resources Recycling and Recovery, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 7 (DOT), California Department of Water Resources (DWR), California Fish and Game Commission (CDFGC), 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, Los Angeles Region 4 (RWQCB), California Santa Monica Mountains Conservancy (SMMC), California State Coastal Conservancy (SCC), Colorado River Board, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance
Development Types
Other (Infrastructure upgrades and maintenance activities)
Local Actions
Infrastructure upgrades and maintenance activities
Project Issues
Biological Resources, Cultural Resources, Geology/Soils, Mandatory Findings of Significance, Tribal Cultural Resources
Public Review Period Start
Public Review Period End
Attachments
Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
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