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Regional Planning for Green Infrastructure RetrofitsGrowing Green Infrastructure in NYS
SUNY ESF
Session 1: Planning – 11.17.10
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Green Infrastructure and Low Impact Development Evaluation and Implementation Plan http://
gflrpc.org/GreenInfrastructure.htm
Clean Water Act Section 604(b)
Water Quality Management Planning Projects
Appropriated from the American Recovery and Reinvestment Act (ARRA)
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Brian C. Slack, AICPSenior Planner – Genesee/Finger Lakes Regional Planning Council
John Lagorga, P.E., BCEE & Gregory Liberman, CPESCStearns & Wheler, LLC
Portions of this presentation have been adapted from:• “The Art and Science of Stormwater Retrofitting.” Deb
Caraco, Center for Watershed Protection. April 12, 2010 • “Stormwater Retrofits: The Art of Opportunity.” CWP• Stearns & Wheler LLC Presentation to G/FLRPC August 27,
2010
Credits
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Genesee/Finger Lakes Region
•Genesee
•Livingston
•Monroe
•Ontario
•Orleans
•Seneca
•Wayne
•Wyoming
•Yates
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Goals and Objectives
• NYSDEC 604(b) Goal/Priority:– Develop planning activities to support implementation of
“green infrastructure” as defined under the Clean Water Act• Our Proposal:
– Partner with regional municipalities – Identify local “green infrastructure” stormwater retrofit
opportunities – Provide them with a framework for implementing those
projects– Conduct analysis of the local regulatory framework to ensure
compatibility with local laws and to promulgate BMPs in BSD/LID
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Project Municipalities
• Targeted geographic focus areas– Specific watersheds– Regulated MS4s
• ~65 municipalities were mailed solicitation letters
• Asked to submit a letter of interest justifying why they would like to participate
• 10 responses – all were accepted
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What are Stormwater Retrofits?
• Stormwater retrofits are stormwater management practices in locations where stormwater controls did not previously exist or were inadequate or ineffective (CWP)
• Keep the water on-site– Infiltration– Evapo-transpiration– Reuse
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Typical Stormwater Retrofit Goals
• Fix Past Mistakes & Maintenance Problems• Demonstration & Education• Reduce Pollutants of Concern• Alleviate Chronic Flooding Problems• Reduce Stormwater Runoff Volumes• Reduce Downstream Channel Erosion• Trap Trash & Floatables• Support Stream or Watershed Restoration Projects
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Typical Stormwater Retrofit Locations
• Existing BMPs
• Culverts
• Storm Drain Outfalls
• Parking Lots
• Highway ROWs
• Open Spaces
11Pocket WetlandPermeable and Porous Pavements
Planters and Tree Boxes Grassed Swales & Rain Gardens
12Source: http://www.americaninfratech.com/bw.html
“Storm Tank”
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CWP: Eight Steps to Stormwater Retrofitting
Step 1. Preliminary Watershed Retrofit Inventory
Step 2. Field Assessment of Potential Retrofit Sites
Step 3. Prioritize Sites for Implementation
Step 4. Public Involvement Process
Step 5. Retrofit Design
Step 6. Permitting
Step 7. Construction Inspections
Step 8. Maintenance Plan
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Step 1. Preliminary Watershed Retrofit Inventory
• Administering short survey with each lead contact• Generating local stormwater goals
– Badly performing existing facilities
– Inflow and Infiltration
– Green Spaces
– Waterbodies of concern, TMDL priorities
• Where possible, generate a list of potential sites• Conduct face to face follow-up• Begin preliminary desktop analysis
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Step 2. Field Assessment of Potential Retrofit Sites
• Develop inventory tool
• Look for pollution prevention opportunities in the field
• Conduct a ground-truth to determine what will work
• Prepare a conceptual sketch and take photographs
17Source: D. Caraco, CWP
CWP Retrofit Reconnaissance Form
18Source: D. Caraco, CWP
CWP Retrofit Recon. Form
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Basic Desktop Analysis and Sketch Plans
Source: D. Caraco, CWP
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Step 3: Prioritize Sites for Implementation
• Information collected can be used to prioritize projects them locally and regionally
• Consider cost effectiveness, logistical feasibility, potential for public/environmental benefit
Site
Criteria and Score
Rank ScoreWater Quality Improvement Score Cost Score
A Medium 5 $10,000 8 5*2+8*1=18
B High 10 $15,000 5 10*2+5*1=15
C Low 1 $8,000 10 1*2+10*1=12
Table Source: Stearns & Wheler LLC
EXAMPLE
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Step 4: Local Law Review
• No G/FLRPC project is complete without a local law “gap analysis”!
• Analysis will seek to review existing laws, identify any potential conflicts and provide recommendations for BSD/LID
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Final Project Outcomes
1. Prioritized list of feasible stormwater green infrastructure projects
2. Basic overview/framework to assist municipalities with next steps regarding implementation, including any necessary public outreach
3. Accompanying local law analysis
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Questions?
Contact Information
Brian C. Slack, AICP
Senior Planner – G/FLRPC
Green Infrastructure and Low Impact Development Evaluation and Implementation Plan
http://gflrpc.org/GreenInfrastructure.htm