a path to resilient water resources - energy exchange · • understanding of asset strengths and...

Tampa Convention Center • Tampa, Florida

A Path to Resilient Water Resources

Water Resources Management

Jason M. BirdCH2M

August 17, 2017 (8:30-9:30 am)

Energy Exchange: Connect • Collaborate • Conserve

About Presenter

Jason Bird - Principal TechnologistCH2M Florida Resiliency & Water Resources Practice Leader

• 17 years of civil engineering experience• Water resource projects for:

– DoD, DoI, DoS– International & Domestic, Commercial

& Residential – Municipalities and Utility Providers

• Member of SAME, FWEA, & ASAP2


Session Objectives

1. Identify alternative potable water supply sources

2. Identify components of an Integrated Water Resources Plan

3. Understand climate related vulnerabilities

4. Identify key Federal Executive Orders, Directives and Policies

5. Identify ways to address water resource challenges

6. Learn how you can personally help protect limited water resources

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Water Sources of Florida

• Managed by five water management districts• 65% of supply is from groundwater

4

FDEP 2015 FDEP


Water Sources of Florida

• The Floridan is one of worlds most productive aquifer systems, supplying water for over 10 million people in 5 states.

• Balancing supply location with population distribution

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FDEP, 2015 FDEP, 2015


Water Demands in Florida

• Over 50% of demand is agriculture/irrigation including portion of domestic supply and commercial.

• Domestic supply is fastest growing sector.

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FDEP 2010 FDEP 2015


Future Water Demands in Florida

• In next 12 years, an additional 1 billion gpd will be needed to meet projected water demands from population increase.

• Groundwater sources are already being strained, driving the need for alternative supplies to meet future demands.

7

FDEP 2015 Annual Water Supply Planning ReportNASA


Alternative Water Supplies of Florida

• Nearly 80% of FL water supply projects include reclaimed water or brackish groundwater.

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FDEP 2010 FDEP 2015


Integrated Water Resource Management Plan

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United Nations GWP

A process which promotes the coordinated development and management of water, land and related resources, in order to maximize the resultant economic and social welfare in an equitable manner without compromising the sustainability of vital ecosystems.Global Water Partnership


Integrated Water Resource Management Plan

• Water supply planningFuture demands, source preservation, diversification, risk reduction

• Water qualityNutrients, bacteria, heavy metals, emerging pollutants

• Flood protection & floodplain mgmt.Increased impervious cover and rainfall intensity

• Natural systemsIntegrated solutions with co-benefits that promote preservation of ecology

10

AWWA paper 2007, CH2M


Climate Hazards

EcosystemsCoastal Regions

Energy

Infrastructure

Water quality

AgricultureFloodplain management

Water Resources

… and not all are impacted the same …

Sea level riseTemperature Precipitation Storm surge

Climate influences many aspects of infrastructure planning, design, and operations


Information adapted from NCA (2013) and IPCC AR5 (2014)

Climate Change Trends in North America


Climate Trends

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NOAA NOAA

Temperature change over last century Precipitation change over last century


Climate Projections

14

NOAA

Hist

oric

Dat

a

2100

For

ecas

t


Climate change impacts on water cycle

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Implications for groundwater supply

Increasedpopulation

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Saltwater intrusionfrom sea level rise

Decreased usable

surface waterReduced aquifer recharge rates

Higher demand and over

extraction

Contamination of fresh

groundwater sources

Increases demand for groundwater sources and may contaminate

groundwater

Potential loss of fresh

groundwater source


Implications for surface water supply

Increased soil and contaminant load and concentration

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Increased evaporation rates

Increased water temperatures

Decreased supply of fresh water

Increased biological

activity

Increased evaporation, decreasing

available water supply

Increased population

Higherdemand


Climate impacts on the energy sector

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US Dept. of Energy


Critical Infrastructure Effects

• Increasing air temperature affecting pumps and motors• Increasing water temperature affects on chemical feed

systems• Increasing air temperature and humidity on chemical

storage, equipment storage• Infrastructure vulnerabilities to sea level, storm surges, or

increasing flooding • Maintenance of seasonally-operated critical systems• Useful life remaining

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KSWO.com


Consequences of Inaction

• Drinking water quantity and quality• Health risks• Reduced agriculture• Loss of wildlife and aquatic resources, wetlands• Impacts to energy sector• Impacts to economy

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Florida Challenges

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• Population has doubled in last 30 years and set to do so again in next 25 years, increasing by nearly 1,000 people per day.

• Most population centers are located along the coast, vulnerable to coastal flooding

• Coastal areas are experiencing saltwater intrusion, affecting local water supply

• Geographic disparity between supplies and demands


Managing Risks vs. “Climate Politics”


Mandates and Policy

Executive Orders and Directives• E.O. 13653 (Preparing for Climate Change) – Nov. 2013• E.O. 13690 (Floodplain Management) – REPEALED • E.O. 13693 (Federal Sustainability) – March 2015

Legislation• Energy Policy Act (EPAct) of 1992 & 2005• Energy Independence and Security Act (EISA) 2007 (438)

FDEP Office of Water Policy – SB 552 (2016)• WMDs must prepare 20-yr Regional Water Supply Plans • Florida Springs and Aquifer Protection Act (spring MFLs)


Key Elements of Resilient Water Resources

• Leadership support and staff training• Clear communication of Reliability, Risk,

and Resilience• Understanding of asset strengths and

weaknesses including climate hazards and scenarios

• Resilience informed planning, policy, design guides, and level of service

• Resilience mainstreamed into decision making

Reliability: probability that a system will perform its intended functionRisk: effect of uncertainty on system (aka, likelihood and consequence)Resiliency: the ability to return to original state after event (shock)


Addressing water resource challenges - Planning

• Evaluating capabilities of existing infrastructure before building new supplies – Understanding hydraulic and hydrologic constraints with

climate change • Vulnerability assessments for existing and planned

infrastructure

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Addressing water resource challenges - Planning

• Risk assessment framework

• Scenario development• Qualitative & quantitative

decision support assessment

• Test, monitor, adjust and continue

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Addressing water resource challenges - Operations and Policy

• Operational continuity through redundancy • Incorporate climate scenario planning into

standards and review criteria• Staff cross training for operations,

maintenance, and engineering staff • Engage local community and stakeholders• Collaborative agreements with other

utilities/ entities• Build up upon regional/ national working

groups and research

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Peace River Manasota Regional Water Supply Authority


Addressing water resource challenges - Questions to Consider

• What time horizons should be considered for Capital Improvement Plan or Renewal/Replacement activities?– Asset service life or Beyond? (20, 30, 50, 75 years?)

• What is the appropriate risk tolerance?• How critical is the asset to maintain system function?• Are service disruptions acceptable?• When is the asset scheduled for upgrades?• How will future demands be met?• What are environmental and social

implications?

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TBRPC Sea Level Rise Task Force


Increasing Florida’s Water Resiliency

• Diversify sources• System redundancy and hardening • Groundwater recharge • Aquifer storage and recovery (ASR)• Conservation and waste reduction• Improved efficiency and education • Tiered rates and fixture rebates • Expand reclaimed distribution• Improve R&R and replacement

programs

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Tampa Bay Water, FL• Diversifying water supply sources

– $158 million 25 mgd saltwater desalination plant

– New surface water reservoirs & wells

• Incorporating changes in rainfall and sea level in long-term water supply planning and asset management

• Participating in national, regional and local collaborative coalitions to translate climate change impacts– Water Utility Climate Alliance– Florida Water Climate Alliance– University of Florida– Tampa Bay Science Advisory Panel

Case Studies

Tampa Water – RO Plant


JEA I-Water Program, Jacksonville, FL

Case Studies, cont

• Develop sustainable, integrated, and long-term water supply plan

• Aquifer recharge for long term supply viability

• Develop hydraulic model from source to user for operational excellence

• Minimize JEA’s water supply risks on iWATER facilities

• System redundancy to maximize reliability


Aquifer Recharge Project, Pasco County, FL• 385 acre wetland to restore hydrology using 5 MGD of available reclaimed water• Nutrient reduction, effluent disposal, groundwater recharge, reduced pumping• Habitat enhancement, recreational amenity

Case Studies, cont.


Case Studies, cont.

Clayton County Water Authority, GAWater Resource Challenges• Increasing costs• Regulatory compliance (reuse rules, TMDLs,

allocation)• Drought Management

Benefits of Integrated Water Management Planning• Facilitates long-term planning • Optimizes use of water resources• Encourages and facilitates regional planning• Enhances communication and support

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Wetlands

Wastewater

DrinkingWater


Case Studies, cont.

Seattle Public Utilities– Seattle today uses about the same amount of

water it was in the late 1950s—with double the population

– Focus on water conservation supported by SPU• Give away low flow shower heads• Block rate pricing structure encouraging

conservation• Outlawing sale of inefficient toilets and faucets

in early 1990s– Participating in national, regional and local

collaborativecoalitions to translate climate change impacts

• Oregon State University/ University of Idaho• Water Utility Climate Alliance

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What you can do?

• Communicate and educate (climate risks & vulnerabilities)• Lead by example (conservation & reuse)• Leverage regional resources through collaboration • Start a community of practice (COP)• Plan the work and work the plan• Monitor conditions, revise plan and continue• Act Now

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Key Takeaways

1. Understand climate science and system risks and vulnerabilities

2. Leverage regional knowledge and collaboration

3. Develop adaptive goals and objectives for infrastructure LOS

4. Be action oriented with longer term focus

5. Communicate value of resilience approach

6. Reassess and adapt as conditions change


Questions / Discussion

Jason M. BirdFlorida Resiliency Practice LeaderTampa, [email protected]

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