paynes prairie sheetflow restoration - fsa presentation
DESCRIPTION
This presentation was given by Amy Goodden at the 2014 Florida Stormwater Association (FSA) Annual Conference.TRANSCRIPT
Sweetwater Branch / Paynes Prairie Sheetflow Restoration: An Innovative Integrated Water Resources Projectj
June 13, 2014
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Project Location
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Presentation Outline
• History
• Project Background & DriversProject Background & Drivers
• Design Concepts
• Park Facilities
• Project PartnersProject Partners
• Public Relations
• Permitting
• Construction Photos
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• Conclusion
History• 1800s (Cattle Ranch)• 1930s: SWB channeled
directly to Alachua Sinkdirectly to Alachua Sink• 1,300 acres of wetlands
impacted.• Direct flow path from Gainesville• Direct flow path from Gainesville
to Alachua Sink
• 1930s: Portion of Prairie Creek flow diverted away from Payne’s Prairie
• Urbanization of Gainesville• Urbanization of Gainesville• Stormwater runoff• Trash & sediment• WW Effluent (1 to 7 MGD)
Septic Tanks
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• Septic Tanks• WQ Currently (TN- 5-8; TP – 1
mg/L)
Project Background
1971 - Payne’s Prairie became Florida’s 1st state Preserve1 state Preserve
…getting it right can take time
– 1972 – Dr. Larry White proposed studying effect of wastewater treatment effluenteffect of wastewater treatment effluent disposal on Payne’s Prairie1975-2004 – Lot more studies!– 1975-2004 – Lot more studies!
– 2004 – Watershed Management Plan2009 Preliminary Design
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– 2009 – Preliminary DesignOctober 2012 – Construction Started
Project Background
•2004 Sweetwater Branch
Watershed Management PlanWatershed Management Plan
•WMP Tasks
• CharacterizationCharacterization
• Topography
• H&H Modelingg
• BMP Recommendations
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Project BackgroundProject Drivers:
Alachua Sink TMDLAlachua Sink TMDL
TN and TP load d tireduction
Park Management Plan
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Project Background
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Design Considerations• WQ Improvement
• Goal TN < 3 and TP < 0.3mg/L
• Public Access
• Heritage Trees • Estimated 124,000 lb/yr TN and 2,900 lb/yr TP removal
• Sediment Loads – 1700 CY/yr
• O&M
• Sediment Loads 1700 CY/yr
• Trash
• Peak Flows • Mean daily; 25 cfs
• Peak hourly;(2,385 cfs recorded!)
• Wetland Impacts
•Number, Size, and Location of Cells
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•Cut and Fill Balance
Project Site Plan
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Project Site Cut Fill Balance
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Environmental BenefitsWater Quality Benefits• Exceeds total N TMDL• Achieves background total
N and P on Prairie• Removes suspendedRemoves suspended
sediment loads from Prairie
Hydrologic RestorationHydrologic Restoration Benefits• Restores Sweetwater
fBranch sheetflow to about 1,300 acres
• Reduces current water
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deficit on Prairie
Environmental Benefits (cont.)
•Wetland Restoration- Backfills 2 miles of Sweetwater Branch Canal
- Restores sheetflow in these wetland areasRestores sheetflow in these wetland areas
• Wetland Creation- Creates 125 acres of high-quality emergent marsh
- Aquatic habitat in distribution channels
• Regional Showcase
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Project Partners
• FDEP- Parks, TMDL grants, Greenways & Trails• St Johns River Water Management District• St. Johns River Water Management District• Florida Department of Transportation• US EPAUS EPA• Alachua County • Florida Fish and Wildlife Conservation Commission
Over $5.7 M in grants
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Public Relations
Project Video C bl A Ch l– Cable Access Channel
– Audubon, Sierra Club, F i d f P P i i– Friends of Paynes Prairie
Public Meetings– City Commission– Design Workshops
Neighborhood Representative
Newspaper Articles & Utility Flyer
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p p y y Project Website(s)
Public Relations
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www cityofgainesville org/ppsClick to edit section Click to edit section Click to edit section17
www.cityofgainesville.org/pps
Environmental Permitting
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Permitting & Reviewing Agencies
• SJRWMD• Alachua CountyAlachua County
• Environmental Protection• Public Works
G th M t• Growth Management• Alachua County Forever
• Florida Department of HealthFlorida Department of Health• US Army Corps of Engineers• GRU• GRU • FDEP• Florida Bureau of Historic Resources
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• Florida Bureau of Historic Resources
Permitting Issues - Example
Minimize Wetland Impacts On Site
Minimize Impact to H it T d
Minimize Wetland Impacts by
Heritage Trees and Uplands
p yChanging Site
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Project Site Plan
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Park Facilities
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Park Facilities
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Future Park Facilities
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Project Site May 20, 2014
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Project Site June 2, 2014
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Project Site June 2014
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SummaryWater Quality Benefits• Exceeds total N TMDL
124,000 lb TN/ yr$21/ lb per year
• Achieves background total• Achieves background total N and P on Prairie
• Removes 1700 CY/ yrdi t l dsediment loads
Hydrologic Restoration Benefits• Restores Sweetwater
Branch sheetflow to 1,300 acres
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acres• Reduces current water
deficit on Prairie
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