Traditional Technologies Can Be a Drag- Rev Up Your Brownfield By - - PowerPoint PPT Presentation

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Traditional Technologies Can Be a Drag- Rev Up Your Brownfield By - - PowerPoint PPT Presentation

Oct 24, 2022 139 likes •416 views

Traditional Technologies Can Be a Drag- Rev Up Your Brownfield By Incorporating Sustainable Landscape and Stormwater Practices Nadia Locke, PE, LEED AP October 2, 2018 Stormwater Challenges at Brownfields Cannot discharge stormwater into

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Traditional Technologies Can Be a Drag- Rev Up Your Brownfield By Incorporating Sustainable Landscape and Stormwater Practices

Nadia Locke, PE, LEED AP October 2, 2018

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Stormwater Challenges at Brownfields

  • Cannot discharge stormwater into contaminated areas
  • Dewatering can spread contamination
  • Engineering controls can increase impervious area
  • Increases runoff volume
  • Increases size of stormwater management system
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Site Planning Strategies to Avoid Contamination Conflicts

  • Consultant/Designer Partnership
  • Maximize placement of impervious site features
  • Strategically place buildings/parking over

contamination

  • Move or remove contaminated soils
  • Divert runoff from contaminated area
  • Consider alternative technologies
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Site Planning Strategies to Reduce Stormwater Management Features

  • Reduce impervious areas
  • Minimize compaction to increase infiltration and storage
  • Use draught tolerant vegetation
  • Redirect stormwater runoff
  • Re-use
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Sustainable Stormwater Management

  • Permeable Pavement
  • Underground storage (open trenches, cisterns)
  • Aboveground storage (tanks, cisterns)
  • Draught tolerant landscaping
  • Green Roofs
  • Rain gardens/Flow-through planters
  • Bioswales
  • Injection wells
  • Regional stormwater management
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Permeable Pavement

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Underground Modular Storage

Rainstorm 3

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Undergound Storage- Modular Vault Chamber

Low impact development exfiltration system that facilitates the infiltration of stormwater into the soil for natural treatment and to replenish local aquifers. StormCapture

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Underground Storage- Modular Vault Chambers

Designed to minimize the development footprint and reduce project costs. Modular design allows for maximum storage volume and the precast base allows for discharge of stormwater to the soil, reducing stormwater runoff and recharging the groundwater table.

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Underground Storage- Arch Chambers

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Contech ChamberMaxx Terre Arch

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Rainwater Harvesting Systems-Re-use

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Drought Tolerant Landscaping, Green Roofs, Living Walls Increase Canopy Cover

  • Reduce irrigation requirements
  • Improve evapotranspiration
  • Increase soil storage capacity
  • Reduce roof runoff
  • Improve heat island effect
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Rain Gardens/Flow Through Planters

  • Reduce irrigation requirements
  • Improve evapotranspiration
  • Reduce runoff from roof
  • Provide pretreatment
  • Provide storage capacity
  • Improve heat island effect
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Drainage Wells

  • Class V injection wells
  • Stormwater discharges below

contaminated media

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Combining Technologies

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Regional Approach to Stormwater Management

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Beneficial Stormwater Opportunities at Brownfields

  • Overcome fatal flaws for previously undevelopable sites
  • May reduce construction costs
  • Increased area for development
  • Increased area for open space
  • Up to four LEED Points
  • Community Amenities
  • Sustainable
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Funding Sources

  • Clean Water RLF
  • Section 319 Grants
  • EPA Urban Small Waters Grant
  • TMDL Water Quality Restoration Grants
  • Helpful links

https://floridadep.gov/wra/wra/highlights/water-project-funding-sources https://www.epa.gov/green-infrastructure/green-infrastructure-funding-tools- documents

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More Stormwater Challenges at Brownfields Coming our Way

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Tides and Groundwater are Linked

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Soil Storage Capacity

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Stormwater Challenges at Brownfields

  • Climate change causing rising tides
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Rising Tides

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Rising Tides

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Climate Change-Effects of Rising Tides and Groundwater

  • Reduced soil storage capacity (vadose zone)
  • Smear zone is rising
  • Contaminated groundwater rising
  • Regulatory agencies establishing new average wet season water levels

for design and permitting

  • Flooding from outfalls backing onto land
  • Backflow prevention valves
  • Pumping systems
  • Raising ground elevations
  • Again, reduce runoff-be creative!
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Thank you!

Nadia Locke, PE, LEED AP E Sciences, Incorporated 224 SE 9th Street Fort Lauderdale, Florida 33316 954-484-8500 nlocke@esciencesinc.com www.esciencesinc.com