Belmont Creek Restoration
Project
MAY 9, 2023
Belmont Creek Restoration Project 2
Creek Restoration
Project Goals
• Minimize erosion, downstream siltation, and
stabilize the creek banks
• Connect to new detention basin project
• Stabilize the channel with natural materials
such as rootwads and grading
• Enhance public access
• Remove invasive vegetation and reintroduce
native plants to enhance riparian habitat
• Create a new park trail connecting the Civic
Center to a local trail system
Lead Consultant: Restoration
Design Group, Inc., Erik Stromberg
Belmont Creek Restoration Project 3
Watershed Extent of Belmont Creek
Existing
Conditions
Belmont Creek Restoration Project 12
Work to Date
Coordination with Planning Efforts
• Referencing Twin Pines Park Master Plan
• Referencing Belmont Creek Watershed
Plan
• Coordinating with Detention Basin Project
• Conducting Public Meetings
Status of Project Assessments
• Geotechnical Report (Complete)
• Cultural Resources (Draft Complete)
• Biological Conditions (Draft Complete)
• Geomorphic (Complete)
• Topographic (Complete)
• Wetland/Waters of the State Delineations
(Draft Complete)
• Tree Inventory (Complete)
Design Development
• Phase 1 Concept Designs (Complete)
• Phase 2 Concept Design (Complete)
• Phase 1 Schematic Design / 30% Plans
(Active)
• Current focus on Upper/Middle reaches
Master Plan
Phase 2
Phase 1
Belmont Creek Restoration Project 13
Phase 1 focuses
on stepping back
bank/slope
Phase 2, if funded,
extends slope
enhancements
and bed
improvements
Belmont Creek Restoration Project 14
Phase 1
Grant: Urban Stream Restoration Program
(USRP)
The City of Belmont has secured the Department
of Water Resource’s USRP grant funds as
provided for by the Safe Drinking Water, Water
Quality and Supply, Flood Control, River and
Coastal Protection Bond Act of 2006 (Proposition
84) and the California Drought, Water, Parks,
Climate, Coastal Protection, and Outdoor Access
for all Act of 2018 (Proposition 68) for the
Belmont Creek Stream Restoration project.
i. Grant work to be complete by June 30, 2025
(extensions permitted)
ii. Not to exceed $1,000,000 (plus $600k in
matching $$)
iii. Funding match of 20% of the total project
cost shared between the City of Belmont
($300k), County of San Mateo, and the City
of San Carlos ($150k each)
Phase 1 Concept Plan
Belmont Creek Restoration Project 15
Phase 2
Grant: In Progress
The City has identified multiple potential funding
sources for Phase 2.
One source is from the California Natural
Resources Agency’s Urban Greening Grant
Program funded by the State’s cap and trade
auction revenue as administered through the
Greenhouse Gas Reduction Fund. In 2021, SB 170
allocated $50 million from the General Fund to
the CNRA for its Urban Greening Program.
The Urban Greening Program funds projects that:
i. reduce greenhouse gas emissions;
ii. acquire, create, enhance, or expand
community parks and green spaces;
iii. achieve multiple benefits.
Sources: https://www.adaptationclearinghouse.org/resources/california-eys-urban-greening-program.html; chromeextension://efaidnbmnnnibpcajpcglclefindmkaj/https://resources.ca.gov/-/media/CNRA-Website/Files/grants/GGRF_UG/GF-Urban-Greening-Program-Guidelines-FINAL.pdf; Phase 2 Concept Plan
Belmont Creek Restoration Project 16
Construction and Park
Impacts
• Restoration work will occur primarily during the
summer and fall when creek flow is lowest.
• Planting and park improvements will occur into the
winter and spring of the following year.
• Creek will be temporarily dewatered during the
summer.
• Contractor will use portions of the park near the
creek for staging. These locations need to be
determined.
• During construction portions of the park will be
closed to the public, most park activities can
continue.
Sausal Creek at Dimond Park,
Oakland, California
Belmont Creek Restoration Project 17
Will cover both Phase 1 and Phase 2
• CEQA can cover larger project than the project that
ultimately is implemented
• IS/MND is anticipated but final route (IS/MND vs EIR) will be determined once we know the outcome of
cultural field work (summer 2023)
• Boring for cultural exploration to occur in May or
June
CEQA
Belmont Creek Restoration Project 18
Schedule
2022 2022/2023 2023 2023/2024 2024 2024/2025
Summer Fall Winter Spring Summer Fall Winter Spring Summer Fall Winter Env. Investigations
30% PS&Es
CEQA - Initial Study
60% PS&Es
CEQA - Draft EIR
Permitting
CEQA - Public Notice
90/100% PS&Es
CEQA - Final EIR
Construction currently planned to begin in Spring of 2025 Twin Pines Park Storm Water Detention
Basin Project
May 9, 2023
Project Background
Project Background 20
• Persistent Downstream Flooding
• 2017 Watershed Management
Plan
• Identified Twin Pines Park as a
location
• Project Objectives
• Reduce downstream flooding by
lowering peak flows and detaining
runoff volume
• Reduce sediment load that
decreases channel capacity
downstream
• Improve water quality
Source: Belmont Creek Watershed Management Plan
Project Background
Project Background 21
• Funding Sources
• California Natural Resources
Agency
• Design = $913k
• Construction = $5.95M
• Local match not required
• Future Grant Opportunities
• CalOES ($8 million grant drafted),
FEMA, Hazard Mitigation Funds
Work Done to Date
Work Done to Date 22
• Hydrology &
Hydraulics Analysis
• 9 ac-ft Storage
(Subsurface);
~2.93M gallons
• Geotechnical
Investigations
• High groundwater &
low infiltration
• Progress to 60% Plans Proposed Work Extent
2-yr Event – Existing
Flooding
2-yr Event – with Twin
Pines Detention Only
Belmont Presentation Template 25
10-yr Event – Existing Flooding
10-yr Event – with Twin Pines
Detention Only
Belmont Presentation Template 26
Work Done to Date
Work Done to Date 27
Work Done to Date
Work Done to Date 28
• Cultural Resource
Inventory
• Further exploration
underway
• CEQA Initial Study
• Minimal to no impacts
for all but cultural
• Outreach Event/Fact
Sheet, Posterboard
Belmont Presentation Template 29
Work Done to Date
Work Remaining
Work Remaining 30
• Cultural Resource Inventory
• Exploratory trenching on site
• Finalize Plans, Specifications,
and Engineer’s Cost Estimate
• Environmental Doc (EIR or
MND)
• Cultural trenching to dictate MND
or EIR
• Regulatory Permitting
• Continued Public Outreach
Remaining Schedule
Remaining Schedule 31
Anticipated
Construction
Start in 2025
Task Name Start Finish
Task 4. Initial Study
4.1 – Draft Sections 1/2/2023 3/24/2023
4.2 – Final Sections 3/27/2023 6/30/2023
Task 5. Draft EIR
5.1 – Cultural Resource Evaluation (Field Investigation) 4/1/2023 6/30/2023
5.2 – NOP & Alternative Descriptions 7/3/2023 9/15/2023
5.3 – Administrative Draft EIR 9/18/2023 10/27/2023
5.4 – Screen Check Draft EIR 10/30/2023 12/8/2023
Task 6. CEQA Public Noticing & Participation
6.1 – Public Review Draft EIR 12/11/2023 3/8/2024
Task 7. Final EIR 3/11/2024 6/7/2024
Task 9. 60% PS&E 1/2/2022 5/12/2023
Task 10. 90% & 100% PS&E
10.1 – 90% PS&E 5/15/2023 6/23/2023
10.2 – 100% PS&E 6/26/2023 7/21/2023
Task 11. Environmental Regulatory Permit Applications 4/17/2023 5/3/2024 Task 12. Construction Permits & Bid Package 7/24/2023 9/29/2023 Construction Impacts
Construction Impacts 32
• Access During Construction
• Park Facilities
• Eastern parking lot closed
• Eastern pedestrian bridge crossing closed
• West parking lot accessible through Twin
Pines Ln
• Citizen sandbag station relocation
• Senior & Community Center and Outdoor
stage access from east closed. West
access to remain open and available
• City Hall
• Parking available from 6th Avenue
• Temporary relocation of accessible
parking stalls
• Water line relocation. Possible interim
shut offs
• Police Station
• All access available from 6th Avenue.
Gate leading to parking lot to be closed
• Construction Activities
• Increase in truck traffic on Ralston Avenue
• Construction noise
6th Ave
Bridge
East Parking
West
Parking
Gate
Questions
33