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Post Construction Site Runoff Controls

Post Construction Site Runoff Controls. Charles Brown, CPESC,CFM Stormwater Program Analyst. Town of Cary Water Resources Department. Post Construction. Regulations Plan Review (Ordinances) Construction Post Construction. Watersheds. State Regulations.

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Post Construction Site Runoff Controls

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  1. Post Construction Site Runoff Controls Charles Brown, CPESC,CFM Stormwater Program Analyst Town of Cary Water Resources Department

  2. Post Construction • Regulations • Plan Review (Ordinances) • Construction • Post Construction ________________________________________________________________________________________________________________________________________________

  3. Watersheds _______________________________________________________________________________________________________________________________________________________

  4. State Regulations • Soil Erosion and Sedimentation Control • Watershed Protection • Buffer Rules • Nutrient Stormwater Rules _______________________________________________________________________________________________________________________________________________________

  5. Federal Regulations • Floodplain Management • NPDES Phase II Stormwater Permit Six Minimum Measures • Public Education • Public Participation • IDDE • Construction • Post Construction • Good Housekeeping _______________________________________________________________________________________________________________________________________________________

  6. Land Development Ordinance • Chapter 3: Review and Approval Procedures • 3.12 Development in Flood Hazard Area • 3.13 Grading Permits • Chapter 4: Zoning Districts • 4.4.6 Watershed Protection Overlay • Chapter 7: Development and Design Standards • 7.2 Urban Transition Buffer Regulations • 7.3 Stormwater Management – Nutrient Reduction, Peak Runoff Control, BMP’s • 7.4 Soil Erosion and Sedimentation Control • 7.5 Flood Damage Prevention • Chapter 11: Enforcement _______________________________________________________________________________________________________________________________________________________

  7. Construction Process • Approved Plan (Review Erosion and Stormwater) • Pre-Construction Conference (SCM Acknowledgment) • Certificate of Compliance • Inspections • Enforcement _______________________________________________________________________________________________________________________________________________________

  8. Stormwater Acknowledgment _______________________________________________________________________________________________________________________________________________________

  9. Conversion to Post Construction • When to convert • No ongoing construction occurring (final stabilization) • Final inspections and paperwork • Place site into the permanent inspection program _______________________________________________________________________________________________________________________________________________________

  10. Required Documents • Owners List • Recorded Deed • O&M Manual • O&M Agreement • Survey Plat of Structure with access easement • Maintenance Security • Recorded Stormwater Control Structure and Access Easement • Certification of Stormwater Control Measure (SCM) by P.E. • Record Drawings • Soils report for bioretention devices in Jordan Watershed (Phosphorus) _______________________________________________________________________________________________________________________________________________________

  11. Inspection Program • Late 1990’s-2001: Emphasis on annual maintenance. • 2001: Neuse River Rules. Town performs annual inspections internally and does compliance tracking via spreadsheet. • 2005: Phase II EPA Regulations enacted; all sites with 24% or more impervious must design/construct SCM’s to meet 85% TSS. • 2007: TOC transitions to independent inspections by certified professionals. • 2009: TOC requires new 30-day turnaround time for PE Certification on new SCM’s following developer receiving Certificate of Compliance. • 2010: Updated Compliance Tracking Program developed by TOC to ensure SCM’s are inspected and functional each year by established deadlines. _______________________________________________________________________________________________________________________________________________________

  12. Inspection ProgramRequirements • Annual Report with photos • Submitted electronically • Qualified Professional • 30 days to correct if failed • NOV and Enforcement _______________________________________________________________________________________________________________________________________________________

  13. ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

  14. ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

  15. GIS Based Tracking: Mapinfo _______________________________________________________________________________________________________________________________________________________

  16. Challenges of Tracking Over 950 SCM’s • Ownershipchanges hands frequently as does the mailing addresses for the owner. • Managementof the SCM’s changes hands frequently from one management company to the next. (HOA) • Contact person name, and information changes often. • Compliance tracking is an ongoing fact of life. _______________________________________________________________________________________________________________________________________________________

  17. Questions or Comments Charles.brown@townofcary.org (919) 469-4038 _______________________________________________________________________________________________________________________________________________________________

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