Quarry Site
Restoration
Project
City of San Leandro Facilities & Transportation Committee February 1, 2023
2 Project Schedule - General
Planning
Permitting
Property Acquisition
Design
Construction
Site Mobilization
Active Operations
Site Preparation & Mobilization of
Equipment
Construction of Site Operation
Components
Site Studies, Environmental Review &
Public Outreach
Property is on private property – EBMUD
needs to purchase the property to proceed
Active Operations Begin
Conditional Use Permit, Stakeholder
Agency Coordination & Regulatory
Approvals
Design of Site Operation Components
Agenda
• EBMUD Water System
• Project Purpose & Objectives
• Project Location
• Project Description
• Visual Simulations
• Environmental Review & Outreach
• Next Steps
3 EBMUD Water System
6 Treatment Plants
167 Reservoirs
136 Pumping Plants
4,200 mi. Pipelines 4
1923-2023
EBMUD
5 Project Purpose and Objective
EBMUD Pipeline Replacements
and Trench Soils
• EBMUD is proactively replacing its pipelines to improve water service, reduce water loss, and decrease the number of
pipeline breaks within its service area
• Trench soils are excavated soil and rock generated by pipeline construction and repair work
6 Current Trench Soils
Management
Trench soils are:
• Double-handled
• Disposed at landfills
• Beneficially reused
7 Project Purpose
The Quarry Site would provide:
• Long-term economical and sustainable
management of EBMUD trench soils
• Beneficial reuse of EBMUD trench soils
8 9
Project Location
Quarry Site Restoration Project
Location
10 Lake
Chabot
Quarry Aerial
11 Bay-O-Vista
Swim &
Tennis Club
Former Golf
Driving Range
EBMUD
Watershed Land
Lake Chabot
Regional Park
Lake Chabot
Regional Park
Lake Chabot
Bay-O-Vista
Neighborhood
N
12 Project Description
Project Stages
•Fill Operations
•Site Restoration
•Restored Site
13 Fill Operations Stage
• Place and compact clean trench
soils, in phases
• Trench backfill materials would be
delivered to and stored at the site
and taken to jobsites when needed
to backfill open trenches
• Hydro-slurry would be delivered
and mechanically separated
14 Fill Operations: Work Hours,
Staffing, and Security
• Work Hours 7 am – 7 pm
• Trucks would typically enter
and exit the site between
9 am – 3 pm
15 • Site Staffing:
– Approximately 8 personnel onsite daily
• Site Security:
– Automated vehicle gates with EBMUD badging requirements – Security cameras
– Security fencing
Fill Operations Phasing
16 Lake Chabot
Regional Park
Bay-O-Vista
Neighborhood
N
EBMUD Watershed Land
Lake Chabot
Regional Park
Fill Operations: Conceptual Site Plan
17 HydroSlurry
Primary
Access
Secondary
Access
Lake Chabot
Regional Park
Lake Chabot
Regional Park
Bay-O-Vista
Neighborhood
No Fill No Fill
100-ft Buffer Zone
Trucks exit right
turn only onto Lake
Chabot Road
Trench Soils
Stockpiles
Fill Operations: Quarry Site
Soil Management Plan
• A Soil Management Plan was developed and
includes:
– Trench soils
•acceptance criteria
•sampling and stockpiling methods
•monitoring and reporting requirements
– SF Bay Regional Water Quality Control
Board approval and oversight
18 Fill Operations
• The proposed Project Fill Operations would:
– Restore the Quarry Site with approximately
3.4 million cubic yards of clean trench soils
– Take approximately 40-80 years to fully
restore the Quarry Site
– Include interim phases to provide benefits
before final restoration
19 West Fill Area: Interim access and trail
20 Fairmont Ridge
Staging Area Trails
N
Site Restoration Stage
• Potential beneficial uses of the Quarry
Site include:
– Open space
– Native plant restoration
– Passive recreation (public trails)
21 Restored Site Stage
22 N
23 Visual Simulations
Quarry Site Public Viewpoints
24 N
25 Viewpoint 3: West Shore Trail near Chabot Park - Existing View 26 Viewpoint 3: West Shore Trail near Chabot Dam – Proposed Concept View 27 28
Viewpoint 5: Quarry Site West Lake Chabot Road Entrance - Existing View 29 Viewpoint 5: Quarry Site West Lake Chabot Road Entrance – Proposed View 30 31
Viewpoint 7: Hillview Drive at Lakeview Drive - Existing View 32 Viewpoint 7: Hillview Drive at Lakeview Drive - Existing View 33 Viewpoint 7: Hillview Drive at Lakeview Drive - Existing View 34 Viewpoint 7: Hillview Drive at Lakeview Drive – Proposed Concept View 35 Environmental Review and Outreach
Environmental Impact Report
(EIR)
• Purpose:
– To inform the public of the environmental
consequences of projects
• EIR is required:
– When there is potential that a project may have
significant impacts
36 37
Environmental Review Schedule
Community Meeting #1
June 3, 2021
Notice of Preparation
January 2022
Community Meeting #2
February 9, 2022
Environmental Review Process
2022-2023
Publish Draft EIR
2023
Draft EIR Public Meeting
2023
Publish Final EIR
TBD
EBMUD Board Consideration
TBD
Discuss findings of the Draft EIR and
receive public comments
Identify impacts and how to mitigate
Public Hearing & Project Approval
Introduce project, discuss concepts and
receive public comments
Discuss concept site plan and visual
simulations and receive public comments
Address public comments on Draft EIR
Notice that EBMUD is preparing an
Draft EIR and request public comments
Preparation of EIR
EIR Analysis Results
38 Environmental Resource
Category
Less than
Significant
Less than Significant
with Mitigation
Significant and
Unavoidable
Aesthetics √
Air Quality √
Biological Resources √
Cultural Resources √
Energy √
Geology and Soils √
Greenhouse Gas Emissions √
Hazards and Hazardous Materials √
Hydrology and Water Quality √
Land Use and Planning √
Mineral Resources √
Noise √
Recreation √
Transportation √
Tribal Cultural Resources √
Utilities and Service Systems √
Wildfire √
Biological Resources &
Recreation
• Mitigation Measures:
– Pre-construction training and
surveys
– Habitat avoidance, buffers and
monitoring
– Wildlife encounter procedures
39 Dusky-footed woodrat
Air Quality and
Greenhouse Gas Emissions
• Incorporated EBMUD standard specifications and
practices
- Trench soils trucks will be required to be covered
- Bay Area Air Quality Management District
measures, including
- daily dust control watering
- limiting diesel engine idling times
- Conformance to current, stringent U.S. EPA diesel
engine standards
40 Transportation
RANGING FROM: • Approximately 60 to 100
trench soils and backfill
materials trucks per day
over 40 years (Exclusive
Use scenario)
TO: • Approximately 30
-40
trench soils and backfill
materials trucks per day
over 80 years (Non-
Exclusive Use scenario)
Project traffic would not
worsen wait times at study
intersections and would not
exceed roadway capacities
41 Noise
• Noise reduction
components: – 100-foot buffer zone
adjacent to Bay-O-Vista
– Looped access roads – Right turn only for
exiting trucks
– Location of backfill
material stockpiles and
hydro-slurry operations
42 Alameda County
Conditional Use Permit
• EBMUD applied for a Conditional Use
Permit from Alameda County May 2022
• EBMUD presented at a Castro Valley
Municipal Advisory Council meeting in
September 2022 and at a Bay-O-Vista
Improvement Association in October
2022
43 Key Takeaways
44 • The Draft EIR includes results of the analyses of
environmental resource areas and discussion of any
potential impacts
• The Quarry Site Restoration Project will not be a landfill – No trash or debris will be placed at the Quarry Site
– Only clean trench soils generated from within EBMUD
service area from EBMUD activities will be placed at the Quarry Site
– All trench soils will be placed at stable slopes per an approved grading plan and will be planted with native
landscaping and restored at the end of each fill phase
45 Next Steps
Next Steps
• Continue outreach with the public and local
stakeholder agencies
• Continue to coordinate with Alameda County on
the Conditional Use Permit process
• Release a Draft Environmental Impact Report in
2023
46 Questions and Comments
47