The Master Plan - TreePeople...Bull Creek Pipeline 60" - 16,000' 3,000 2018 2020 2021 12, 7 LACFCD Debris Basin Retrofit #1 (pilot) 100 2021 2024 2025 TBD LACFCD or LASAN Lopez Spreading

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


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


• 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



To Ocean


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


CAPTURECentralized Distributed

Dam Improvements

Spreading Basins Rain Barrels

Sub-Regional

Parkway Basins


What is the 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



Regular Coordination

SCMP

Basin Study

EWMP

Development Process


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


Summary of Public Outreach


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


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


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 Potential


“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


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


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


2035 2099

Aggressive

Conservative

Present

Baseline

Range

for

SCMP

Potential

Sto

rmw

ate

r C

aptu

re

2015


Stormwater Capture Alternatives


OVERVIEW

• Define Alternatives

• Centralized Projects

• Distributed Programs

• Evaluate Alternatives

• Costs

• Water supply benefits

• Ancillary benefits

• Opportunity areas



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



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


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



Centralized Projects

Centralized Implementation Timeline


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


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


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


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



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


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


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


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


Distributed and Centralized Capture - 2035

68

114


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


$-

$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


~$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


~$1,550/AFAVOIDED COST OF PURCHASED WATER

VALUE OF LOCAL RESOURCE



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



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


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%


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%



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


Also modeled TKN, Nitrate, Phosphorus, Copper, Lead, Zinc, and Fecal Coliform

0

50

100

150

200

250

300

350

400

450

500


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


0

0.005

0.01

0.015

0.02

0.025




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




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



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


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


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


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


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



Implementation Strategy

Guiding Principles of Implementation

• Cost Effective

• Resilient Water Supply

• Multi-benefit/collaborative

• Opportunistic

• Efficient (with regards to time)


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


Contact Us for More Information!

Rafael Villegas, Project ManagerWatershed Management Group111 N. Hope Street, Room 1350

Los Angeles, CA 90012

[email protected]

(213) 367-1289


For more information

www.ladwp.com/stormwaterwww.ladwp.com/scmp


Documents

The Master Plan - TreePeople...Bull Creek Pipeline 60" - 16,000' 3,000 2018 2020 2021 12, 7 LACFCD Debris Basin Retrofit #1 (pilot) 100 2021 2024 2025 TBD LACFCD or LASAN Lopez Spreading