Stormwater cost effectiveness 140604

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Stormwater cost effectiveness 140604

  1. 1. Stormwater Cost-Effectiveness & The James Adrienne Kotula June 4, 2014
  2. 2. Protecting America’s Founding River Five Core Programs: • James RIVERKEEPER® • Education • Outreach • Watershed Restoration • River Advocacy
  3. 3. Initial Estimates Source: Virginia Senate Finance Committee, November 18, 2011
  4. 4. Cost-Effectiveness Study • In-depth investigation of costs • Review all urban practices • Costs & Pollutant Removal • Case Study in City of Richmond
  5. 5. Methodology • 33 Chesapeake Bay Program Approved & Unapproved Practices • Review Pollution Removal Efficiencies • Approved by Chesapeake Bay Program • If unapproved, relied on current research • Considered 20-Year Life Cycle Costs including: • Design & Construction • Land Values & Financing • Operations & Maintenance
  6. 6. Most Cost-Effective Practices: Nitrogen • Pet waste programs: $ 1.36/lb • IDDE /sewer repair: $ 8.73/lb • IDDE /cross connections: $ 13.51/lb • Forest buffers: $100.31/lb • Urban stream restoration: $226.67/lb
  7. 7. Most Cost-Effective Practices: Phosphorus • Pet waste programs: $10.43 /lb • IDDE /sewer repair: $34.94 /lb • IDDE/cross connections: $54.05 /lb • Urban stream restoration: $666.69/lb • Forest buffers: $1,230.76/lb
  8. 8. Most Cost-Effective Practices: Total Suspended Solids • Urban stream restoration: $0.83/lb • IDDE /sewer repair: $0.87/lb • Urban growth reduction: $2.64/lb • Retrofit of existing dry pond (conversion to wet pond or wetland): $3.89/lb • Vegetated open channels (A/B soils, no underdrain): $4.50/lb
  9. 9. Case Study • City of Richmond • Stormwater Permit Reductions Used • Local Data Used: – GIS layers to determine BMP feasibility – Local BMP Constraints – Input locally derived costs, where available
  10. 10. Case Study Three Scenarios Developed: 1. Old CBP Approved Practices, Limited Constraints 2. New CBP Approved Practices, City Constraints Used 3. All Practices, City Constraints Used
  11. 11. Key Findings *Scenario 2 does not meet pollution reduction targets $305 $89 $68 $62 $0 $50 $100 $150 $200 $250 $300 $350 Initial Estimates Scenario 1 Scenario 2* Scenario 3 City of Richmond Stormwater Pollution Reduction Costs through 2025 (in millions)
  12. 12. Key Findings • Continued Research on Practices is Vital: – New Urban Nutrient Management Standard Approved – New Stream Restoration Standard Recommended – Currently Being Reviewed: • Enhanced Erosion & Sediment Control • Shoreline Erosion • Illicit Discharge Detection & Elimination
  13. 13. Key Findings • Additional BMP Benefits should be quantified – Public Health/ Safety – Public Education – Recreation – Neighborhood Beautification – Urban Heat Island – Carbon Footprint – Wildlife Habitat – Stream Habitat – Flood Control
  14. 14. Future Considerations • Local Practice Inventories Needed • Sustainable Funding Sources • Capital Improvement Planning • Private Property Incentives
  15. 15. Adrienne Kotula akotula@jrava.org (804) 788-8811 x206 Questions?

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