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TOWN Of CARY
Post Construction Stakeholder Involvement
Charles Brown Town of Cary
TOWN Of CARY
Issues to Address • Who are the stakeholders
• Why the need for continuous stakeholder involvement
• Construction to Post Construction Process (Program Background)
• Post Construction the Final Product
• Long Term Maintenance
TOWN Of CARY
Post Construction Stakeholders • Designers (PE, RLA, etc.) of SCM
- Design
- Certification: Initial and Annually
- Modification
• HOA/Developer - O&M of SCM in perpetuity
• SCM Contractors
- Monthly/Quarterly/Annual O&M
- Annually Certification if qualified
• Town of Cary - Compliance
- Technical Assistance
TOWN Of CARY
• Answer why do we have SCM’s in the first place
• Construction to Post Construction – When to convert
• Finalizing - SCM and associated paperwork
• Letters for Final Compliance
• Transfer from Developer to Owner (HOA, Association, etc.)
Stakeholder Issues
TOWN Of CARY
Stakeholder Issues• Inspection Requirements – Forms and who performs them
• Operation and Maintenance Manuals (what applies)
• Repairs and/or changes made to SCM that affect performance and Town not notified
• What is considered compliant vs non-compliant
• Common issues with maintenance
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Construction to Post Construction Program Background
Construction to Post Construction
- S&EC Device to SCM Device
• Timing of Conversion
• Timing from Developer to Owner
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Initial Construction
Plan Review
Pre-Construction
Grading Permit
Certificate of Compliance
Inspections/Enforcement
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SCM ACKNOWLEDGEMENT
TOWN Of CARY
Stormwater Infrastructure Policy
§ 8.1.4 Cary Land Development Ordinance
(C) Storm Drainage
(d)The Town shall neither have nor accept any responsibility to maintain any storm drainage structures, except for those lying within a Town Right-of-Way or traversing Town-owned property.
-Glad to provide technical assistance
Right-of-Way Town-owned property
TOWN Of CARY
Conversion Issues Ensuring the Site is built out
– not just stable!
Proper removal and disposal of sediment
Ensuring proper volume
No impact to the outlet structure
Permanent stabilization
TOWN Of CARY
Ensure compliance of all SCM’s (Private and Town owned)
Ensure property owners maintain legal responsibilities through the Land Development Ordinance (LDO)
Ensure function per O&M Manual: Town will follow-up on non compliant SCMs and require documentation of re-compliance
Track progress, deadlines, ownership information, photos, inspection reports, and site details
Post Construction Program Goals
TOWN Of CARY
Town of Cary SCM Records SCM files include:
1) Executed Deed2) Operation & Maintenance Manuals - Site Specific3) Maintenance Agreements - Signed4) Survey Plot recordable w/SCM Access Easements 5) Financial Security Documentation6) SCM, Access Easement & Agreement Documentation7) Professional Engineer Certification (30 Days)8) Soils report for Bioretention Devices9) Reproducible records drawings
The Town of Cary requires a final site visit with engineer and owner before certificate of compliance letter is issued for SCM
TOWN Of CARY
Paperwork Issues Record Drawings do not have all information needed
per checklist
Recorded documents needed – Access and Easements Register of Deeds
Recorded Plats – Time to route through the Town
PE Certification (30 Days of completion)
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Compliance Letter
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Compliance Letter (cont.)
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Issues with Post Construction
• Transfer from Developer to the HOA
• Change of Ownership or Management Companies
• Placing of items on the access easement that block access to the SCM
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SCM GIS Database
TOWN Of CARY
SCM’s in Cary 214 Wet Ponds 199 Constructed Wetlands 154 Bioretention Areas 148 Level Spreaders 107 Dry Ponds 47 Underground Detention Systems 44 Grass Swales 44 Sand Filters 8 Proprietary Devices (must be pre-approved by DWQ) 11 Scour Hole 4 Plunge Pools 3 Riparian Buffers 1 Step Pool 1 Permeable Pavement
• Over 988 total at 476 sites
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SCM Annual Inspection
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Current Inspection Form
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New Form
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Site Specific based on date of approval
Dictates maintenance in perpetuity
TOWN Of CARY
TOWN Of CARY
SCM’s Inspector Requirements
Professional Engineer
Registered Landscape Architect
Professional Land Surveyor
Also - the licensed professional (i.e., the inspector) is ‘strongly encouraged’ to successfully complete the NCSU BMP Maintenance Certification Course
TOWN Of CARY
SCM Maintenance General maintenance should be done on a routine basis as
outlined in the operations and maintenance manuals. They dictate the maintenance needed. BMP manual has and will change over time.
Work done out side of the scope of the maintenance manual needs to be approved by the Town before work is performed.
What is compliant vs non-compliant
TOWN Of CARY
Common Maintenance Issues
TOWN Of CARY
