Incremental Flow Management Program
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Transcript Incremental Flow Management Program
Incremental
Recycled
Water
Program
Incremental Recycled Water Program
Santa Rosa Subregional Water
Reclamation System
Scoping Meeting
July 31, 2002
Incremental
Recycled
Water
Program
Introduction
Purpose of Meeting
Meeting agenda
Introduction – Ed Brauner, Deputy City
Manager
CEQA Overview – Pat Collins, EIR
Manager
Description of Program – David Smith,
Ph.D., Program Manager
Public comments
Purpose of Incremental Recycled Water
Program
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Incremental
Recycled
Water
Program
CEQA Overview
City has decided to prepare a Program
EIR
Not as detailed as a Project EIR
Allows for broad policy considerations,
program-wide mitigation measures
Subsequent CEQA documents for specific
projects
No preferred alternative – all alternatives
will be evaluated equally
Issued a Notice of Preparation and Initial
Study to agencies on July 16th
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Incremental
Recycled
Water
Program
Incremental Program Schedule
2001
2002
2003 2004
2005
Feasibility Eval.
Public Involve.
Tech Studies
CEQA
Design
Permitting
Construction/Ops
Discharge
Permit ReIssuance
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Recycled
Water
Program
Near-Term IRWP Public Involvement
Opportunities
EIR Scoping
Comment period ends August 14
Screening of Alternatives to be Studied
in the EIR
Screening criteria discussed Aug 1st at
BPU; Aug 6th at Council
Screening on Sep 19th at BPU; Sep 24th at
Council
Draft EIR public review
Spring ‘03
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Incremental
Recycled
Water
Program
Purpose of Scoping
Inform agencies and the public about the
project
Identify the range of alternatives
Identify specific issues to be analyzed in
depth
Understand various points of view about
the IRWP so the EIR can respond
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Incremental
Recycled
Water
Program
Public Comments
Written comments
Mailed or faxed to Santa Rosa City
Manager’s Office
Hand in Comment Form tonight
Deadline is August 14, 2002
Oral comments
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Incremental
Recycled
Water
Program
Program Overview
Why is the Program needed?
What are the possible solutions?
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Incremental
Recycled
Water
Program
Why the Incremental Recycled
Water Program?
Geysers Recharge Project
General Plans as of 1994 (21.3 mgd)
Meets capacity needs through 2010
11 mgd (9 – 12 mgd) for entire project
IRWP
Meet capacity needs beyond 2010
General plans changed to allow 25.9 mgd
California Toxics Rule imposed in 2000
New limits on effluent quality
New solutions needed to comply
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Incremental
Recycled
Water
Program
California Toxics Rule –
Constituents of Concern
Copper – pipe corrosion, difficult to remove
Lead – pipe corrosion
Cyanide – treatment byproduct
Aldrin - pesticide
alpha-BHC - pesticide
gamma-BHC (lindane – head lice control)
beta-Endosulfan - pesticide
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Incremental
Recycled
Water
Program
General Plans and Future Flow
General Plan
Flow
Disposal/Reuse
July ’02
+ 4.6 mgd
+ ?????
Apr ’94
+ 3.3 mgd
+ Geysers
- Irrigation
- Discharge
Pre-’94
18 mgd
Irrigation
Discharge
Total=25.9 million gallons per day 11
Incremental
Recycled
Water
Program
IRWP Purpose and Need
Three Primary Project Objectives
Provide treatment, reuse and disposal
for planned population
Protect public health and natural
resources, esp. River and tributaries
Economically feasible
Supporting Objectives
Maximize reuse
Potable supply benefits
Environmental protection
Maximize use of existing infrastructure
Manageable and reliable system
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Incremental
Recycled
Water
Program
How Much Water Needs to
Handled?
Reuse and Disposal (BG/Yr)a
Geysers Existing
Needs
at 11
Irrigation
to be
mgd
Managed
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2.1
3.7
Year
Type
Recycled
Water
Production
(BG/yr)
Dry
9.8
Normal
10.5
4
2.1
4.4
Wet
12.3
4
1.9
6.4
a
BG/Yr = billion gallons per year
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Incremental
Recycled
Water
Program
What are the Possible Solutions?
Laguna Plant
Expansion
Indoor Water
Conservation
Inflow & Infiltration
Reduction
Urban Reuse
Agricultural Reuse
Industrial Reuse
Geysers Expansion
Additional Treatment
& Reuse
Discharge
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Incremental
Recycled
Water
Program
Possible Location for IRWP
Alternatives
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Incremental
Recycled
Water
Program
Alternatives Laguna Plant Expansion
Increase treatment capacity from 21.3 to
25.9 mgd
Common to all reuse and disposal
alternatives
All needed facilities expected to fit within
existing site
Cost $40 - $158 million
Filtration requirements may change
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Incremental
Recycled
Water
Program
Alternatives –
Indoor Water Conservation
Implementation beyond current
programs
Santa Rosa – sustain existing program
Others cities – additional effort
Different program for each Subregional
partner
Flow
Reduction
(mgd)
Flow
Reduction
(BG/yr)
Cost
($million,
Cap/O&M)
Program
thru 2000
1.54
0.56
-
IRWP
0.73
0.26
3.1/1
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Recycled
Water
Program
Alternatives –
Inflow & Infiltration Reduction
Rehabilitation of sewers to reduce I&I volume
Annual I&I volume
0 - >3 BG/Yr
Priority areas
Crosstown area, such as Montgomery Village
Oldtown area, such as hospital, cemetery, Town and
Country areas
Wide range of implementation level possible –
up to $600 million for 70% reduction
Appropriate level defined by avoided costs
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Incremental
Recycled
Water
Program
Alternatives –
Urban Reuse
Construct
up to 75-mile distribution network
1 main pump station, up to 6 booster pumps stas.
Parcels greater than about 1 acre
Maximum project
Existing City water users
0.7 BG/Yr
Existing other users
0.6
Future users
0.7
Total
2.0 BG/Yr
Irrigation System Cost - $112 million, $57k/MG
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Water
Program
Alternatives - Storage
Needed for several alternatives
Surface
Santa Rosa Plain
East of Rohnert Park
North County
Subsurface
Santa Rosa Plain
Potential water quality benefits
Storage cost – up to $70 million
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Water
Program
Urban Reuse – Possible Surface
Storage Area
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Recycled
Water
Program
Urban Reuse – Possible Subsurface
Storage Area
Favorable Area for
Groundwater Injection and
Extraction
2 BG storage needed
1 well field with 14 injection/
extraction wells stores 1 BG
Well field is approximately
3,000 feet wide and 9,000
feet long
Treatment benefit
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Alternatives –
Agricultural Irrigation
East of Rohnert Park
1.2 BG potential demand
Storage - 0.5 BG
Conveyance
North County
5 subareas
10.3 BG potential demand; 4.3 BG reliable
supply
Storage - 1.8 BG
Conveyance
$19.2k/MG
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Recycled
Water
Program
Alternatives –
Industrial Reuse
Gravel processing
Typical facility “uses” 0.2 BG/yr
Cost $3k/MG or more depending on
distance from Geysers Pipeline
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Recycled
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Alternatives – Geysers Pipeline
Capacity Increase
Installed system
To AV: 48-inch, 40 mgd
AV to Geysers: 30-inch, 16 mgd
Expansion potential
48-inch: from 40 to 81 mgd
Convey peak flows to indirect discharge,
additional storage or reuse – CTR compliance
Add 2 PS between Plant and AV - $30 million
30-inch: from 16 to 27 mgd
Increase steamfield injection
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Alternatives –
Geysers Expansion
Current project = 11 mgd, 4 BG/yr
Expansion
From 11 to 21 mgd, 2.9 BG/yr
Pipeline: $0.3 capital, $2.3 million O&M
Steamfield: $32 milliona cap, $1.3 milliona O&M
From 11 to 27 mgd, 4.6 BG/Yr
Pipeline: $42 million capital, $7.7 million O&M
Steamfield: $62 milliona cap, $2.6 milliona O&M
Maximizes use of existing facilities
a
Calpine’s estimate
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Recycled
Water
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Alternatives –
Additional Treatment & Reuse
Up to 126 pollutants could be regulated
CTR compliance strategies:
Avoid direct discharge or
Improve effluent quality to comply
Effluent quality improvement strategies
Source control – not sufficient
Treatment – Reverse osmosis - up to $212 million
RO water suitable for
Discharge to the Russian River - $1 million
Groundwater injection – cost not yet estimated
Augmentation of Lake Sonoma - up to $60 million
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Recycled
Water
Program
Alternatives –
Indirect Discharge
Discharge to River via soil and
groundwater
Percolation ponds
Infiltration basins (gravel pits)
Groundwater injection
Locations adjacent to River
Cost
Greater than $10 million for conveyance
and site improvements
Land cost not yet estimated.
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Selected Example Combinations of
Alternatives
14
12
Rapid Infiltration
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Rapid Infiltration
AT&R
Rapid Infiltration
Urban Reuse
I&I Reduction
Ag Reuse
Urban Reuse
Ag Reuse
Billion Gallons
Incremental
Recycled
Water
Program
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Expanded Geysers
Expanded Geysers
Expanded Geysers
H
J
Expanded Geysers
6
4
Existing Geysers
2
Existing Irrigation
0
B
D
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Incremental
Recycled
Water
Program
Scoping Comments
The most useful comments are:
Suggest alternatives to be included
in the EIR
Identify specific issues to be
analyzed in the EIR
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Incremental
Recycled
Water
Program
Public Comments
Written comments
Hand in Comment Form tonight
Mailed or faxed to Santa Rosa City
Manager’s Office
Deadline is August 14, 2002
Public comments
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