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Pinelands Regional Municipal Leaders Green Infrastructure Workshop

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Presented May 3, 2016

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Pinelands Regional Municipal Leaders Green Infrastructure Workshop

  1. 1. Pinelands Regional Municipal Leaders Green Infrastructure Workshop May 3rd, 2016
  2. 2. Introduction
  3. 3. What’s The Fuss About a Little Runoff? • Increased volume and velocity • Altered stream flows • Increased non-point source pollution • Degraded water quality • Impaired wetland, riparian and aquatic habitats • Compromised ecosystem functions
  4. 4. What’s The Fuss About a Little Runoff? Source: US EPA
  5. 5. Stormwater Runoff Comparison STORM EVENT RUNOFF 1 YEAR 2 YEAR 10 YEAR VOLUME (GAL) VOLUME (GAL) VOLUME (GAL) MEADOW (CN 58) 20,203 39,102 120,891 COMPACTED GRAVEL (CN 96) 238,849 296,199 391,347 RUNOFF VOLUME INCREASE PER STORM (GALLONS) 218,646 257,096 270,456 RUNOFF VOLUME INCREASE PER STORM (%) 1082% 658% 224% VS
  6. 6. Regulations Municipal Permits Legal Issues
  7. 7. Regulatory Responsibility New Development and Redevelopment • NJDEP – Stormwater Management Regulations • Peak flow management (3 options) • Quality management • Recharge (2 options) – Pinelands Comprehensive Management Plan • Major difference is recharge requirement
  8. 8. Regulatory Responsibility New Development and Redevelopment – Peak flow management (3 options) • Controlling the 2-, 10- and 100-year storms • Not volume, but rate of runoff i.e. cubic feet per second
  9. 9. Regulatory Responsibility New Development and Redevelopment – Volume management • Maintaining where the water goes and how much of it i.e. cubic feet In NJ, volume management is achieved via groundwater recharge
  10. 10. Regulatory Responsibility New Development and Redevelopment – Quality management • Treating or protecting water from contamination by pollutants via or detention times, mechanical or filtration – TSS removal 80% and 90% (some specific loading area in Pinelands)
  11. 11. Municipal Requirements MS4 Permit (municipal separate stormwater system) Phase II Rules (non-point source pollution) Subchapter 25. Municipal Stormwater Regulation Program – Tier A and B Municipalities – Public Complex – Highway Agencies
  12. 12. Municipal Requirements MS4 Permit Statewide Basic Requirements 1. Public involvement/participation 2. Post-construction stormwater management in new development and redevelopment 3. Public education 4. Prohibiting improper disposal of waste 5. Control of solid and floatable materials 6. Maintenance of yards and roads 7. Employee training Public official, usually the Mayor signs the NJPDES General Stormwater Permit
  13. 13. Legal Issues • NJ Environmental Rights Act • Hydrologic Trespass • Continuing Nuisance Claims • Construction Defects
  14. 14. Physical Manifestations of Non- Management or Ineffective Management of Stormwater
  15. 15. Stormwater Impacts Failed Recharge Basins Flooding
  16. 16. Stormwater Impacts Fish Removal Permit Infiltration Basin
  17. 17. Stormwater Impacts Water Quality Degradation Beach/Lake Closures
  18. 18. What is Green Infrastructure?
  19. 19. What is Green Infrastructure? Green infrastructure is an approach to water management that protects, restores, or mimics the natural water cycle. Green infrastructure is effective, economical, and enhances community safety and quality of life. It means planting trees and restoring wetlands, rather than building a costly new water treatment plant. Green stormwater infrastructure includes a range of soil-water- plant systems that intercept stormwater, infiltrate a portion of it into the ground, evaporate a portion of it into the air, and in some cases release a portion of it slowly back into the sewer system.
  20. 20. The Sweet Spot in the “Triple Bottom Line” Cost effectiveness Lower lifecycle costs Property values Aesthetics Social Justice Livable communities Safe and clean water Ecological integrity
  21. 21. The New Stormwater Management Paradigm Vegetated, “at the Source” BMPs
  22. 22. • Understanding how a site functions naturally and following through design with this knowledge • Less impervious is more • Reviewing stormwater needs in parallel with zoning bulk standards, rather than as an afterthought. • Viewing stormwater as a resource rather than a waste. Nature Finds a Way
  23. 23. Using biology to increase time between maintenance
  24. 24. Financial Initial and lifecycle cost benefits • Extends life cycle of infrastructure • End of the pipe doesn’t always work with higher Pinelands regulations and/or high groundwater tables • Such approaches emphasize runoff reduction, stormwater infiltration, and pollutant removal ….not simply peak flow attenuation
  25. 25. Financial Initial and lifecycle cost benefits http://www.cnt.org/tools/green-values-stormwater-toolbox
  26. 26. Social/Health www.kidsfishingfoundation.com
  27. 27. Environment
  28. 28. Issues in your town Open discussion
  29. 29. What Are You Dealing With?
  30. 30. Green Infrastructure Making it happen
  31. 31. Getting it Right the First Time New Development • Revamping ordinances – Stormwater model ordinance THE MINIMUM – Incentivize Green Infrastructure – Mitigation projects • Careful review of development applications – Challenge the design – Know your town; soils, groundwater – Enforce ordinances
  32. 32. Existing Development • Enforcement only maintains status quo • Disconnect • Retrofit • Mitigation opportunities, tied back to new development
  33. 33. Infrastructure Replacement 2 Birds, 1 Bioswale • Reduce localized flooding • Efficient use of funds • Complete Streets • Road DietOhiopyle, PA www.waterworrld.comc
  34. 34. Demonstration Projects Start with Public Buildings • Demonstration projects help gain community support • Provides educational opportunity • Improves existing landscape
  35. 35. It’s raining…money? Funding Sources • 59% of NJ towns listed funding as a barrier to GI • 48% said their weren’t even looking for funding • Municipal funding • 319(h) Grants • NJEIT • Developer mitigation • Private Foundations
  36. 36. Let’s take a closer look at your town
  37. 37. Let’s Look at Your Town Red Dots • Where do streets usually flood? • Are there neighborhoods with wet basements after a storm? • Any stormwater basins that never drain? Or other standing water? Green Dots • Where are churches, community centers, or schools in the town? • Any parcels that are likely to develop or redevelop in the next few years?