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The Master PlanJune 25, 2015
LADWP Headquarters - Auditorium
Agenda• LADWP’s Mission
• Water Sources
• Water Supply and Reliability Challenges
• Comprehensive Strategy for Future Reliability
• Stormwater Capture Master Plan
• Summary of Public Participation
• Review Potential
• Review Alternatives
• Present Plan
• Centralized Timeline, Benefits
• Distributed Implementation Rates, Benefits
• Funding and Implementation
• Implementation Strategy
• Panel Q&A
Stormwater Capture MASTER PLAN
To provide our customers with safe, reliable, high quality and reasonably priced water services in a transparent and environmentally responsible manner.
LADWP Water System’s Mission
Stormwater Capture MASTER PLAN
Delta
Los Angeles Aqueduct
State Water Project
Sierra Mountains
Local Groundwater, Conservation, Recycled Water, Stormwater Capture
Water Sources and Reliability
Challenges
Colorado River Aqueduct
Stormwater Capture
Groundwater contamination in the San Fernando Basin
L.A. Aqueduct supply reduction due to Owens Lake dust mitigation
Bay-Delta and Colorado River supply uncertainties due to allocations, pumping restrictions, and other threats
Climate change impacts, water/energy nexus, and carbon footprint
Water Supply and Reliability Challenges
Comprehensive Strategies
Stormwater Capture MASTER PLAN
• Increase Water Conservation
• Increase Recycled Water Usage
• Clean-up the Local Groundwater Basin
• Increase Stormwater Capture
Comprehensive Strategy for Future Reliability
Today Future
* 2010 Urban Water Management Plan
Stormwater Capture MASTER PLAN
Stormwater Capture MASTER PLAN
To Ocean
Stormwater Capture MASTER PLAN
Eastern San Fernando Valley2008
Eastern San Fernando Valley1949
Why we need to take action
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Rai
nfa
ll (i
n.)
No
rmal
ized
Rec
har
ge (
AF/
in.)
Water Year (Oct-Sept)Rainfall (in.) Linear (Normalized Recharge (AF/in.))
50% increase in capture efficacy per inch
of rain over the past 40 years
Stormwater Capture MASTER PLAN
CAPTURECentralized Distributed
Dam Improvements
Spreading Basins Rain Barrels
Sub-Regional
Parkway Basins
Stormwater Capture MASTER PLAN
What is the Stormwater Capture Master Plan?
Stormwater Capture MASTER PLAN
Document that will outline LADWP’s strategies over the next 20 years to:
• Implement stormwater programs and projects in the City of LA
• Contribute to more reliable and sustainable local water supplies.
Planning document not programmatic document
Goals of the Master Plan
- Quantify stormwater capture potential
- Identify new projects/programs/policies
- Prioritize based on water supply criteria
- Develop cost/benefits for proposed projects/programs/policies
- Define timing and key milestones
Partners
Stormwater Capture MASTER PLAN
Stormwater Capture MASTER PLAN
Regular Coordination
SCMP
Basin Study
EWMP
Development Process
Stormwater Capture MASTER PLAN
Existing Conditions
• Data collection
• Existing conditions research
Stormwater Potential
• Stormwater capture potential
• LAR peak flow attenuation potential
Projects, Programs, &Policies
• Programs/project development
• Policies, ordinances, and incentives
SCMP
• Suite of stormwater capture alternatives
• Targets and implementation schedule
PU
BLI
C IN
PU
T
Stormwater Capture MASTER PLAN
Summary of Public Outreach
Stormwater Capture MASTER PLAN
SCMP Public Outreach Event Date
TAT #1 9-16-2013
Key Stakeholder Mtg #1 – All Key Stakeholders 10-21-2013
TAT #2 2-24-2014
General Public #1 3-26-2014
Key Stakeholder Mtg #2 – GreenLA 3-26-2014
Key Stakeholder Mtg #3 – Prop O COAC 5-19-2014
Key Stakeholder Mtg #4 - UCLA 7-22-2014
TAT #3/Key Stakeholder Mtg #5 10-9-2014
General Public Mtg #2a 1-22-2015
General Public Mtg #2b 1-29-2015
TAT #4/Key Stakeholder Mtg #6 3-25-2015
TAT/Key Stakeholder “Office Hours” 6-1-2015 & 6-4-2015
General Public Mtg #3 6-25-2015
SCMP/EWMP Coordination Mtgs Multiple
SCMP/Basin Study Coordination Mtgs Multiple
Additional Coordination and Briefing Mtgs Multiple
Stormwater Capture MASTER PLAN
Additional Outreach Events Date
Mtg with The River Project 1-14-2014
Mtg with Arid Lands Institute 3-21-2014
Presentation at H20 Conference 5-28-2014
Presentation to Studio City Residents Association 7-8-2014
Presentation to National Research Council (NRC) 7-31-2014
Mtgs with LAUSD 10-2-2014 &
10-15-2014
Presentation at IRWMP Leadership Committee Mtg 10-22-2014
Presentation at the Westchester Rotary Club 12-17-2014
Presentation to Upper LA River Area IRWMP Group 1-21-2015
Presentation at Southern California Water Committee
Mtgs
1-22-2015 &
6-25-2015
Presentation to LA Neighborhood Council Coalition 2-7-2015
Presentation at American Water Resources
Association Conference3-30-2015
Briefings with Los Angeles City Council Members, EPA
Region 9 Administrator, and RWQCB and SWRCBMultiple
Stormwater Capture MASTER PLAN
Selection of common comments• Need to improve coordination between
City Departments
• Multibenefit projects should be prioritized
• Projects should be leveraged to provide benefit for DACs
• Implementation rates are too low – risk for public policy makers to not see stormwater capture potential
• Implementation rates are too high – risk for setting plan up for failure
• SCMP is in line with visions residents have for their neighborhoods
“I’m really excited for green streets because they will look beautiful
in our streets and community”
“[These are] good ideas but honestly
none of [it] is good if it’s not distributed to all communities and
equally benefits everyone”
“What I don't like is the fact that Los Angeles is using
30% of its energy to transport water.”
“I would encourage all regional and sub-regional
projects to be carefully designed, not only
addressing the technical aspects of stormwater
capture but also the urban potential of the overall
space that these projects create”
Can you tell me what geologic feature …defines
the boundary of the "liquefaction potential“
How will this be financed? And what will be the impact on
DWP rate payers?”
“These projects are a great
opportunities to create local
jobs”
Stormwater Capture MASTER PLAN
Stormwater Capture Potential
Stormwater Capture MASTER PLAN
“CONSERVATIVE” SCENARIO
Decrease in prioritization of stormwater capture from
political, financial, and social perspectives
Little to no increase in:-Availability of funding
-Public awareness of stormwater capture
-Political will to push strong stormwater capture agenda at Federal, State, and local level
“AGGRESSIVE” SCENARIO
Increase in prioritization of stormwater capture from
political, financial, and social perspectives
Continued increase in:-Availability of funding
-Public awareness of stormwater capture
-Political will to push strong stormwater capture agenda at Federal, State, and local level
Stormwater Capture MASTER PLAN
CATEGORY A
• Least hydrogeologically
constrained
• Highest priority aquifers
• Conducive to infiltration
BMPs
CATEGORY B
• Somewhat hydrogeologically
constrained
• Mid level priority aquifers
• Conducive to infiltration
BMPs
CATEGORY C
• Most hydrogeologically
constrained
• Lower priority aquifers
• More advantageous for
direct use BMPs
0
50,000
100,000
150,000
200,000
250,000
300,000
Existing Conservative Aggressive
Ave
rage
An
nu
al C
aptu
re V
olu
me
(AF)
Existing & Potential Stormwater Capture
Stormwater Capture MASTER PLAN
Existing
Baseline
Potential Distributed Capture in BMPs
Unclassified aquifer
Aquifer Class 3
Aquifer Class 2
Aquifer Class 1
Potential Capture in Future Centralized
Facilities
Aquifer Class 3
Aquifer Class 2
Aquifer Class 1
Existing Incidental Distributed Capture
Unclassified aquifer
Aquifer Class 3
Aquifer Class 2
Aquifer Class 1
Existing Centralized Capture
Aquifer Class 1
29,400
90,900
15,600
35,300
9,000
63,000
49,600
18,500
27,800
51,700
Stormwater Capture MASTER PLAN
2035 2099
Aggressive
Conservative
Present
Baseline
Range
for
SCMP
Potential
Sto
rmw
ate
r C
aptu
re
2015
Stormwater Capture MASTER PLAN
Stormwater Capture Alternatives
Stormwater Capture MASTER PLAN
OVERVIEW
• Define Alternatives
• Centralized Projects
• Distributed Programs
• Evaluate Alternatives
• Costs
• Water supply benefits
• Ancillary benefits
• Opportunity areas
Stormwater Capture MASTER PLAN
Stormwater Capture Alternatives
Centralized
Centralized Project AlternativesStormwater Capture MASTER PLAN
Project
Hansen Spreading Grounds Upgrade
Big Tujunga Dam Seismic Retrofit
Sheldon-Arleta Gas Management System (combined)
Arundo Donax Removal Project - Phase ITujunga Spreading Grounds UpgradeBig Tujunga Dam Sediment Removal 2.3-4.4 MCYRory M Shaw Wetlands Park Project (Strathern)Spreading Grounds OptimizationValley Generating Station Stormwater Capture - IWhitnall Hwy Power Line EasementBranford Spreading Basin UpgradeBull Creek Pipeline 60" - 16,000'
Debris Basin Retrofit #1 (pilot)
Lopez Spreading Grounds UpgradePacoima Dam Sediment Removal 3 MCYPacoima Spreading Grounds UpgradeSan Fernando Road SwalesSilver Lake Stormwater Capture ProjectVan Norman Stormwater Capture - 1050'Whiteman AirportStorm Drain Mining (Inject)Storm Drain Mining (treat and use)
LA Forebay Recharge System - LAR Pilot
Old Pacoima WashCanterbury Power Line EasementArundo Donax Removal Project - Phase II
Debris Basin Retrofit #2
Hansen Dam Water Conservation Project
LA Forebay Recharge System - LAR Full Scale
Lakeside ReservoirNorth Hollywood Power Line EasementPark Retrofit #2
East Valley Baseball Park (aka Strathern Park Infiltration System)
Van Nuys AirportWhitsett Sports Fields Park RetrofitBig T & Pacoima Dam to LA Filtration PlantBoulevard Pit Multiuse
Debris Basin Retrofit #3
LA Forebay Recharge System - Upper Ballona
Sepulveda Basin - Hansen SG Pipe Line 54"
Cal Mat Pit
Park Retrofit #3Sheldon Pit MultiuseValley Generating Station Stormwater Capture - II
Stormwater Capture MASTER PLAN
Stormwater Capture Alternatives
Distributed
Distributed Program AlternativesStormwater Capture MASTER PLAN
Program On-siteInfiltration
Green Streets
SubregionalInfiltration
On-site Direct Use
SubregionalDirect Use
Impervious Replacement
Examples Residential Rain Garden Program
Commercial Green Street Program
NeighborhoodRecharge
Facility Program
Residential or Commercial Cistern Program
Distributed Reservoir Program
Impervious Surface Replacement Program
Stormwater Capture MASTER PLAN
Implementation Plan
OVERVIEW
• Two Scenarios: Conservative and Aggressive
• Project Milestones: 5, 10, and 20 Years
• Projects and Programs
• Funding and Implementation
• Funding/Financing Opportunities
• Implementation Strategy
Stormwater Capture MASTER PLAN
Stormwater Capture MASTER PLAN
Centralized Projects
Centralized Implementation Timeline
Stormwater Capture MASTER PLAN
Centralized Project Timeline - CONSERVATIVEProject Capture (AFY)* Start Complete Accrual Council District Partners
Hansen Spreading Grounds Upgrade 2,100 2007 2013 2014 6 LACFCD
Big Tujunga Dam Seismic Retrofit 4,500 2009 2012 2013 Angeles NF LACFCD
Sheldon-Arleta Gas Management System (combined) 100 2009 2016 2017 6 LASANArundo Donax Removal Project - Phase I 100 2015 2018 2019 7 NFFTujunga Spreading Grounds Upgrade 4,200 2015 2017 2018 6, 7 LACFCDBig Tujunga Dam Sediment Removal 2.3-4.4 MCY 500 2016 2021 2022 7 LACFCDRory M Shaw Wetlands Park Project (Strathern) 590 2016 2019 2020 6 LACFCDSpreading Grounds Optimization 650 2018 2019 2020 2, 6, 7 LACFCDValley Generating Station Stormwater Capture - I 118 2018 2020 2021 6Whitnall Hwy Power Line Easement 110 2016 2018 2019 2, 4 LABOEBranford Spreading Basin Upgrade 597 2018 2019 2020 6 LACFCDBull Creek Pipeline 60" - 16,000' 3,000 2018 2020 2021 12, 7 LACFCDDebris Basin Retrofit #1 (pilot) 100 2021 2024 2025 TBD LACFCD or LASANLopez Spreading Grounds Upgrade 480 2018 2019 2020 7 LACFCDPacoima Dam Sediment Removal 3 MCY 700 2018 2024 2025 7 LACFCDPacoima Spreading Grounds Upgrade 2,000 2017 2019 2020 6, 7 LACFCDSan Fernando Road Swales 130 2018 2019 2020 6, 7 LACFCDSilver Lake Stormwater Capture Project 117 2020 2024 2025 4 LASANVan Norman Stormwater Capture - 1050' 1,500 2019 2021 2022 12 LACFCDWhiteman Airport 80 2020 2022 2023 6 LASANStorm Drain Mining (Inject) 750 2022 2024 2025 TBD LASANStorm Drain Mining (treat and use) 750 2023 2024 2025 TBD LASANLA Forebay Recharge System - LAR Pilot 1,000 2025 2029 2030 TBD LACFCD or LASANOld Pacoima Wash 1,000 2020 2024 2025 7 LACFCDCanterbury Power Line Easement 1,000 2030 2034 2035 6 LACFCDArundo Donax Removal Project - Phase II 1,900 2022 2024 2025 7 NFFDebris Basin Retrofit #2 300 2025 2029 2030 TBD LACFCD or LASANHansen Dam Water Conservation Project 1,200 2022 2024 2025 7 LACFCD, ACOELA Forebay Recharge System - LAR Full Scale 3,000 2035 2054 2055 TBD LACFCD or LASANLakeside Reservoir 238 2030 2034 2035 7 LASANNorth Hollywood Power Line Easement 750 2022 2024 2025 2 LASANPark Retrofit #2 500 2030 2034 2035 TBD LASANEast Valley Baseball Park (fka Strathern Park Infiltration System) 750 2022 2024 2025 2 RAP, LASANVan Nuys Airport 300 2025 2029 2030 TBD LASANWhitsett Sports Fields Park Retrofit 750 2025 2029 2030 2 LASANBig T & Pacoima Dam to LA Filtration Plant 5,000 2035 2054 2055 7 LACFCDBoulevard Pit Multiuse 5,000 2025 2034 2035 6 LACFCDDebris Basin Retrofit #3 150 2035 2054 2055 TBD LACFCD or LASANLA Forebay Recharge System - Upper Ballona 600 2025 2029 2030 TBD LACFCD or LASANSepulveda Basin - Hansen SG Pipe Line 54" 3,000 2030 2034 2035 12 LASANCal Mat Pit 750 2035 2054 2055 TBD LACFCD or LASANPark Retrofit #3 500 2030 2034 2035 TBD LASANSheldon Pit Multiuse 1,500 2035 2054 2055 7 LACFCDValley Generating Station Stormwater Capture - II 700 2035 2054 2055 6 LACFCD
Centralized Implementation Timeline
Stormwater Capture MASTER PLAN
Centralized Project Timeline - AGGRESSIVE
Project Capture (AFY)* Start Complete Accrual Council District PartnersHansen Spreading Grounds Upgrade 2,100 2007 2013 2014 6 LACFCD
Big Tujunga Dam Seismic Retrofit 4,500 2009 2012 2013 Angeles NF LACFCD
Sheldon-Arleta Gas Management System (combined) 100 2009 2016 2017 6 LASAN
Arundo Donax Removal Project - Phase I 100 2015 2018 2019 7 NFFTujunga Spreading Grounds Upgrade 4,200 2015 2017 2018 6, 7 LACFCDBig Tujunga Dam Sediment Removal 2.3-4.4 MCY 500 2016 2021 2022 7 LACFCDRory M Shaw Wetlands Park Project (Strathern) 590 2016 2019 2020 6 LACFCDSpreading Grounds Optimization 650 2016 2018 2019 2, 6, 7 LACFCDValley Generating Station Stormwater Capture - I 118 2016 2018 2019 6Whitnall Hwy Power Line Easement 110 2016 2018 2019 2, 4 LABOEBranford Spreading Basin Upgrade 597 2017 2018 2019 6 LACFCDBull Creek Pipeline 60" - 16,000' 3,000 2017 2019 2020 12, 7 LACFCD
Debris Basin Retrofit #1 (pilot) 100 2017 2019 2020 TBD LACFCD or LASAN
Lopez Spreading Grounds Upgrade 480 2017 2018 2019 7 LACFCDPacoima Dam Sediment Removal 3 MCY 700 2017 2022 2023 7 LACFCDPacoima Spreading Grounds Upgrade 2,000 2017 2019 2020 6, 7 LACFCDSan Fernando Road Swales 130 2017 2018 2019 6, 7 LACFCDSilver Lake Stormwater Capture Project 117 2017 2019 2020 4 LASANVan Norman Stormwater Capture - 1050' 1,500 2017 2019 2020 12 LACFCDWhiteman Airport 80 2017 2018 2019 6 LASANStorm Drain Mining (Inject) 750 2018 2019 2020 TBD LASANStorm Drain Mining (treat and use) 750 2018 2020 2021 TBD LASAN
LA Forebay Recharge System - LAR Pilot 1,000 2019 2023 2024 TBD LACFCD or LASAN
Old Pacoima Wash 1,000 2019 2021 2022 7 LACFCDCanterbury Power Line Easement 1,000 2020 2021 2022 6 LACFCDArundo Donax Removal Project - Phase II 1,900 2022 2024 2025 7 NFF
Debris Basin Retrofit #2 300 2022 2024 2025 TBD LACFCD or LASAN
Hansen Dam Water Conservation Project 1,200 2022 2024 2025 7 LACFCD, ACOE
LA Forebay Recharge System - LAR Full Scale 3,000 2022 2024 2025 TBD LACFCD or LASAN
Lakeside Reservoir 238 2022 2024 2025 7 LASANNorth Hollywood Power Line Easement 750 2022 2024 2025 2 LASANPark Retrofit #2 500 2022 2024 2025 TBD LASAN
East Valley Baseball Park (aka Strathern Park Infiltration System) 750 2022 2024 2025 2 RAP, LASAN
Van Nuys Airport 300 2022 2024 2025 TBD LASANWhitsett Sports Fields Park Retrofit 750 2022 2024 2025 2 LASANBig T & Pacoima Dam to LA Filtration Plant 5,000 2025 2029 2030 7 LACFCDBoulevard Pit Multiuse 5,000 2025 2029 2030 6 LACFCD
Debris Basin Retrofit #3 150 2025 2029 2030 TBD LACFCD or LASAN
LA Forebay Recharge System - Upper Ballona 600 2025 2029 2030 TBD LACFCD or LASAN
Sepulveda Basin - Hansen SG Pipe Line 54" 3,000 2025 2029 2030 12 LASAN
Cal Mat Pit 750 2030 2034 2035 TBD LACFCD or LASAN
Park Retrofit #3 500 2030 2034 2035 TBD LASANSheldon Pit Multiuse 1,500 2030 2034 2035 7 LACFCDValley Generating Station Stormwater Capture - II 700 2030 2034 2035 6 LACFCD
Stormwater Capture MASTER PLAN
Centralized Capture
29 29 29
15
29
51
0
10
20
30
40
50
60
70
80
90
2020 2025 2035
Ave
rage
An
nu
al C
aptu
re (
1,0
00
AF)
Aggressive
Baseline Capture New Capture
29 29 29
9
22
35
0
10
20
30
40
50
60
70
80
90
2020 2025 2035
Ave
rage
An
nu
al C
aptu
re (
1,0
00
AF)
Conservative
Stormwater Capture MASTER PLAN
Distributed Programs (Recharge and Direct Use)
Implementation Rates
• Onsite Program
• Regulated implementation (LID Ordinance)
• Voluntary implementation (incentives, rebates, etc.)
• Green Streets
• Sustainable streets ordinance
• Implemented by LADWP and partner agencies according to available funding
• Subregional
• Implemented by LADWP and partner agencies according to available funding
Stormwater Capture MASTER PLAN
Stormwater Capture MASTER PLAN
Distributed Implementation Rates – CONSERVATIVE & AGGRESSIVEProgram Category
Subcategory5 year (2020) 10 year (2025) 20 year (2035)
Total Total Total
Onsite Infiltration (A/B) and Direct Use (C)
SF Residential 1% 5% 4% 13% 10% 30%
MF Residential 1% 5% 4% 14% 10% 31%
Commercial 1% 5% 4% 14% 10% 31%
Industrial 2% 6% 6% 16% 13% 35%
Educational 1% 5% 4% 14% 10% 31%
Institutional 1% 5% 4% 14% 9% 31%
Green Streets (A)
Commercial 8% 12% 22% 32% 49% 73%
Residential 8% 12% 22% 32% 49% 73%
Rio Vistas 12% 18% 32% 49% 73% 100%
Subregional Infiltration (A/B), Direct Use (C)
0.05% 1.7% 0.31% 5.9% 0.83% 14.3%
Distributed Capture By Program
Stormwater Capture MASTER PLAN
0
5
10
15
20
25
30
35
40
On-siteInfiltration
On-site directuse
Green StreetPrograms
Subregionalinfiltration
Subregionaldirect use
Ave
rage
An
nu
al C
aptu
re V
olu
me
(1
,00
0 A
F)
Program Type
Conservative
Reported capture does not include baseline
0
5
10
15
20
25
30
35
40
On-siteInfiltration
On-site directuse
Green StreetPrograms
Subregionalinfiltration
Subregionaldirect use
Ave
rage
An
nu
al C
aptu
re V
olu
me
(1
,00
0 A
F)
Program Type
Aggressive
5 year implementation rates 10 year implementation rates
20 year implementation rates
Distributed Capture Total
Stormwater Capture MASTER PLAN
63 63 63
12
31
63
0
20
40
60
80
100
120
140
2020 2025 2035
Ave
rage
An
nu
al C
aptu
re (
1,0
00
AF)
Aggressive
Baseline Capture New Capture
63 63 63
615
33
0
20
40
60
80
100
120
140
2020 2025 2035
Ave
rage
An
nu
al C
aptu
re (
1,0
00
AF)
Conservative
Stormwater Capture MASTER PLAN
Summary of Capture(Centralized and Distributed)
29 29 29
63 63 63
3551
33
63
0
50
100
150
200
250
Baseline Conservative Aggressive
Ave
rage
An
nu
al C
aptu
re (
1,0
00
AF)
Baseline Centralized Baseline Distributed Centralized Capture Distributed Capture
Stormwater Capture MASTER PLAN
Distributed and Centralized Capture - 2035
68
114
Stormwater Capture MASTER PLAN
Funding and Implementation
Costs of Water
Pacoima Spreading Grounds Stormwater Capture MASTER PLAN
$-
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
20
16
20
17
20
18
20
19
20
20
20
21
20
22
20
23
20
24
20
25
20
26
20
27
20
28
20
29
20
30
20
31
20
32
20
33
20
34
20
35
Do
llars
/Acr
e-Fo
ot
Projected Cost of MWD Water
Untreated Tier 1 Water Treated Tier 1 Water Treated Tier 2 Water
Value of Local Resource
• Due to threats to imported water supply, there is value to developing local resources
• Value difficult to monetize, but MWD’s Local Resource Program (LRP) can be used as a conservative proxy
Pacoima Spreading Grounds Stormwater Capture MASTER PLAN
$-
$100
$200
$300
$400
$500
20
16
20
17
20
18
20
19
20
20
20
21
20
22
20
23
20
24
20
25
20
26
20
27
20
28
20
29
20
30
20
31
20
32
20
33
20
34
20
35
Do
llars
/Acr
e-Fo
ot
Projected Value of Local Resource (Constant Dollars)
Present Value of LRP Constant Dollars
$-
$200
$400
$600
$800
$1,000
$1,200
$1,400
20
16
20
17
20
18
20
19
20
20
20
21
20
22
20
23
20
24
20
25
20
26
20
27
20
28
20
29
20
30
20
31
20
32
20
33
20
34
20
35
Do
llars
/Acr
e-Fo
ot
Replenishment Value (Constant Dollars)Avoided Tier 1 w/ Local Resource Value
Untreated Tier 1 Water Constant Dollars Present Value of LRP Constant Dollars
Value of recharged water
Pacoima Spreading Grounds Stormwater Capture MASTER PLAN
~$1,100/AFAVOIDED COST OF PURCHASED WATER
VALUE OF LOCAL RESOURCE
to be reevaluated periodically
$-
$200
$400
$600
$800
$1,000
$1,200
$1,400
$1,600
$1,800
$2,000
20
16
20
17
20
18
20
19
20
20
20
21
20
22
20
23
20
24
20
25
20
26
20
27
20
28
20
29
20
30
20
31
20
32
20
33
20
34
20
35
Do
llars
/Acr
e-Fo
ot
Conservation Value (Constant Dollars)Avoided Tier 1 Treated w/ Local Resource Value
Treated Tier 1 Water Constant Dollars Present Value of LRP Constant Dollars
Value of direct use water
Pacoima Spreading Grounds Stormwater Capture MASTER PLAN
~$1,550/AFAVOIDED COST OF PURCHASED WATER
VALUE OF LOCAL RESOURCE
to be reevaluated periodically
Pacoima Spreading Grounds Stormwater Capture MASTER PLAN
Infiltration Projects/Programs $1,100/AF or less
LADWP may implement and/or fund
Infiltration Projects/Programs more than $1,100/AF
LADWP may seek outside funding and partnerships to implementOR
LADWP may fund partners to implementOR
LADWP may consider implementing without additional funding or partners on a case by case basis
ORProject/program may not be implemented
to be reevaluated periodically
Pacoima Spreading Grounds Stormwater Capture MASTER PLAN
Direct Use Projects/Programs $1,550/AF or less
LADWP may implement and/or fund
Direct Use Projects/Programs more than $1,550/AF
LADWP may seek outside funding and partnerships to implementOR
LADWP may fund partners to implementOR
LADWP may consider implementing without additional funding or partners on a case by case basis
ORProject/program may not be implemented
to be reevaluated periodically
Completed – Hansen Spreading GroundsLADWP Capital Cost $4.19 M
Completion Date 2013
Yield (AFY) 16,000
Year of First Pay-Back 2016
Cost per Acre-Foot ($/AF) $40
Internal Rate of Return 18.6%
Stormwater Capture MASTER PLAN
Completed – Woodman Ave.
LADWP Capital Cost $1.2 M
Completion Date 2014
Yield (AFY) 55
Year of First Pay-Back 2036
Cost per Acre-Foot ($/AF) $727
Internal Rate of Return 2.9%
Stormwater Capture MASTER PLAN
Pacoima Spreading Grounds Stormwater Capture MASTER PLAN
DISTRIBUTED INFILTRATION DISTRIBUTED DIRECT USE
13,000
14,000
CENTRALIZED INFILTRATION
0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
Centralized Projects Subregional infiltration Green Street Programs On-site Infiltration Subregional direct use On-site direct use
Tota
l Lif
ecy
cle
Co
st p
er
Cap
ture
($
/AF)
$1,100/AF
$1,550/AF
Pollutant Reduction-TSS
Stormwater Capture MASTER PLAN
Also modeled TKN, Nitrate, Phosphorus, Copper, Lead, Zinc, and Fecal Coliform
0
50
100
150
200
250
300
350
400
450
500
SubregionalInfiltration
Subregional DirectUse
On-site Infiltration On-site Direct Use Green Streets Self-Mitigating BMPs
Ave
rage
An
nu
al T
SS C
aptu
red
/im
per
vio
us
acre
tre
ated
(l
b/a
cre)
Green Space
Stormwater Capture MASTER PLAN
0
0.005
0.01
0.015
0.02
0.025
SubregionalInfiltration
Subregional DirectUse
On-site Infiltration On-site Direct Use Green Streets Self-Mitigating BMPs
Gre
en S
apce
Pro
vid
ed/I
mp
ervi
ou
s ac
res
trea
ted
(ac
re/a
cre)
0
0.1
0.2
0.3
0.4
0.5
0.6
SubregionalInfiltration
Subregional DirectUse
On-site Infiltration On-site Direct Use Green Streets Self-Mitigating BMPs
Pea
k Fl
ow
Red
uct
ion
/Tre
ated
Imp
ervi
ou
s A
cres
(cf
s/ac
re)
Peak Flow Reduction
Peak flows are approx. 4 cfs /
impervious acre
Stormwater Capture MASTER PLAN
Pacoima Spreading Grounds Stormwater Capture MASTER PLAN
0
20
40
60
80
100
120
140
160
180
200
20
16
20
17
20
18
20
19
20
20
20
21
20
22
20
23
20
24
20
25
20
26
20
27
20
28
20
29
20
30
20
31
20
32
20
33
20
34
20
35
Ave
rage
An
nu
al C
aptu
re (
1,0
00
AF)
Recharge: Baseline, Conservative and Aggressive Scenarios
Baseline Recharge - Conservative Recharge - Aggressive
Pacoima Spreading Grounds Stormwater Capture MASTER PLAN
0
2
4
6
8
10
12
14
16
18
20
20
16
20
17
20
18
20
19
20
20
20
21
20
22
20
23
20
24
20
25
20
26
20
27
20
28
20
29
20
30
20
31
20
32
20
33
20
34
20
35
Ave
rage
An
nu
al C
aptu
re (
1,0
00
AF)
Direct Use: Baseline, Conservative, and Aggressive Scenarios
Direct Use - Conservative Direct Use - Aggressive
There is potential for stormwater to augment local groundwater and also assist with conservation efforts
Pacoima Spreading Grounds Stormwater Capture MASTER PLAN
5 YR 10 YR 20 YR
Alternatives Conservative Aggressive Conservative Aggressive Conservative Aggressive
Centralized Facilities Water Supply
9,000 15,000 22,000 29,000 35,000 51,000
Distributed –Infiltration Water
Supply5,000 11,000 14,000 27,000 29,000 56,000
Distributed - Direct Use Water
Conservation300 1,000 800 4,000 2,000 7,000
Acre Feet Per Year
Pacoima Spreading Grounds Stormwater Capture MASTER PLAN
92 92 92 92
922
355
14
29
0.3
0.8
2
0
50
100
150
200
250
2015 2020 2025 2035
Ave
rage
An
nu
al C
aptu
re (
1,0
00
AF)
Conservative
Baseline Centralized - Infiltration
Distributed – Infiltration Distributed - Direct Use
92 92 92 92
1529
5112
31
63
1
4
7
0
50
100
150
200
250
2015 2020 2025 2035
Ave
rage
An
nu
al C
aptu
re (
1,0
00
AF)
Aggressive
Stormwater Capture MASTER PLAN
Funding/Financing Opportunities
• Financing
• Local Bonds
• State Revolving Funds
• Funding
• Grant opportunities
• Project Partnerships
• Financing for Private Property Owners
• On-bill financing
• PACE like program
• Credits
• Rebates
Stormwater Capture MASTER PLAN
Stormwater Capture MASTER PLAN
Implementation Strategy
Guiding Principles of Implementation
• Cost Effective
• Resilient Water Supply
• Multi-benefit/collaborative
• Opportunistic
• Efficient (with regards to time)
Stormwater Capture MASTER PLAN
Recommended Actions
• Facilitate Stormwater Capture
• Improve coordination between local and regional agencies
• Coordinate with EWMP implementation
• Coordinate with LA County and the USBR
• Reduce impediments
• Pursue funding opportunities
• Implement Cost Effective Centralized Projects
• Pursue partners and funding for multiple benefits
• Implement Cost Effective Distributed Programs
• Pursue partners and funding for multiple benefits
• Increase Efficiency of Implementation
Stormwater Capture MASTER PLAN
Contact Us for More Information!
Rafael Villegas, Project ManagerWatershed Management Group111 N. Hope Street, Room 1350
Los Angeles, CA 90012
(213) 367-1289
Stormwater Capture MASTER PLAN
For more information
www.ladwp.com/stormwaterwww.ladwp.com/scmp
Stormwater Capture MASTER PLAN