emerging national trends in stormwater · 2017-02-01 · kc urban stormwater conference 2017 andrew...
TRANSCRIPT
![Page 1: Emerging National Trends in Stormwater · 2017-02-01 · KC Urban Stormwater Conference 2017 Andrew K. Smith, P.E., C.F.M., Env SP Practice Lead for Watersheds, Stormwater, and Flood](https://reader033.vdocuments.us/reader033/viewer/2022041822/5e5e9bbc5aca8024455c1b45/html5/thumbnails/1.jpg)
KC Urban Stormwater Conference 2017 Andrew K. Smith, P.E., C.F.M., Env SP Practice Lead for Watersheds, Stormwater, and Flood Management
Emerging National Trends in Stormwater
January 24, 2017
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AGENDA
CONTEXT
PLANNING APPROACHES
FUNDING APPROACHES
TECHNOLOGY ADVANCES
Disclaimer 1: NOT a sales pitch Disclaimer 2: NOT comprehensive
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“NATIONAL” TRENDS AND DRIVERS
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CONTEXT
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JOHNSON COUNTY STORMWATER PROGRAM 2016 Strategic Business Plan
• Benchmarking Effort – Review of similar programs around the country
• Determine Best Practices
• Evaluate National Trends
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STORMWATER – MAJOR TRENDS Johnson County Benchmarking Effort
King County, WA
County of Asotin, WA
Orange County, CA
Santa Clara County, CA
Pikes Peak Stormwater Task Force, CO
Southeast Metro Stormwater Authority, CO
New Braunfels, TX
City of Springfield/Green
County, MO
DuPage County, IL
Cook County, IL
Lake County Stormwater Management Commission, IL
City of Frankfort/Franklin County, KY
York County, PA
Wake County, NC
Stormwater Coalition of Albany County, NY
Westchester County, NY
Stormwater Coalition of Monroe County, NY
Nassau County, NY
Montgomery County, MD
St. Georges County, MD
Hampton Roads Regional SMP, VA
Augusta-Richmond County, GA
Long Creek Watershed Towns, ME
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KEY ISSUES FROM NATIONAL BENCHMARKING Asset Management
• System Definition
• Condition Assessment
• Risk-based Analysis
• System Investment (Capital Improvement, O&M)
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KEY ISSUES FROM NATIONAL BENCHMARKING Watershed-Based Organization
• Holistic Approach
• Westchester County, New York
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• “Rainfall to Results: The Future of Stormwater” by WEF
• Objectives for Stormwater Success:
• Work at the watershed scale
• Transform stormwater governance
• Support innovation and best practices
• Manage assets and resources
• Close the funding gap
• Engage the community
• Link to the Document: • http://www.wefnet.org/stateofstormwater/index.html
VALIDATION OF BENCHMARKING
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PLANNING APPROACHES
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11 Many potential sources of pollution
PRIVATE SYSTEMS
OVERFLOWS AGRICULTURE URBAN RUNOFF/SEEPAGE
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STORM WATER
INTEGRATED PLANNING Considers All Watershed Pollution Sources
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Utilities
Manage the system Develop plans to improve
water quality Responsible compliance
entity Quality drinking water relies
on VA and MD
NGOs
Vested interest in health of local waters
May be vocal and adversarial
Buy in will help process
Researchers
Can help to understand physical/biological processes
Leading edge for emerging contaminants of concern
Regulators
Federal and State
Protect water quality
Involvement can ease the approval process
Help to evaluate potential site specific standards
INTEGRATED PLANNING Considers Multiple Stakeholders
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RESILIENCE PLANNING System Resilience
• IRAM (Infrastructure Resilience Analysis Methodology)
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RESILIENCE PLANNING System Resilience
Time
Stat
e More or less, the vertical red arrow represents diminished capacity (reliability) – independent. The horizontal red arrow represents duration of diminished capacity (resilience) – dependent. The area of the “dip” represents cumulative system impact.
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RESILIENCE PLANNING
•Climate Change
• Hydrologic Impacts
• How do we plan?
• Sea Level Rise Planning
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STORMWATER PLANNING PERSPECTIVES Social Justice
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STORMWATER PLANNING PERSPECTIVES Socio-Economic Modeling
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FUNDING APPROACHES
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INNOVATIVE FUNDING FOR STORMWATER D.C. Water and Sewer Authority
• Environmental Impact Bond
• Pay for Green Infrastructure projects
• Performance-based
• Tiered success rates tied to repayment terms for investors
• Exploring P3 Approach for Program Management
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INNOVATIVE FUNDING FOR STORMWATER Unique Programs
• Urban Forestry
• Liability Reduction
• Another P3 Opportunity
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TECHNOLOGY ADVANCES
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REMOTE SENSING SHOWS WATERSHED SOURCES OF PHOSPHORUS
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REMOTE SENSING SHOWS HOTSPOTS OF COPPER CONTAMINATION
USING SPOT 1.5 METER RESOLUTION - IMPERVIOUS SURFACE AUGUST 2015
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12/31/2015 01/08/2016
LUCERNE- HIGUERA
BALDWIN HILLS SCENIC OVERLOOK
LUCERNE- HIGUERA
BALDWIN HILLS SCENIC OVERLOOK
S LA C
IENEG
A
BLV
D
S LA C
IENEG
A
BLV
D
COPPER BUILD-UP AND WASH OFF RESULTING FROM 2” RAIN EVENT IS VISUALIZED
ROADS
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REAL-TIME CONTROLS
• CSO Applications
• Detention Basin Applications
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MULTI-OBJECTIVE EVOLUTIONARY ALGORITHMS (MOEAs)
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Six Objective Functions
27 Decision Variables
MULTI-OBJECTIVE EVOLUTIONARY ALGORITHMS (MOEAs)
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Each project has individual TBL score, composite portfolio score
is shown
MULTI-OBJECTIVE EVOLUTIONARY ALGORITHMS (MOEAs)
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