Stormwater Conveyance Permit

Stormwater Conveyance Overview

A Stormwater Conveyance System permit is required for the construction, reconstruction, replacement, extension, renovation, alteration, demolition, or abandonment of stormwater conveyance systems that meet at least one of the following:

1. Located in the right-of-way (ROW).
2. Located on public or private property and is greater than or equal to 12 inches in diameter.
3. Located on public or private property and conveys public runoff.

The following situations do not require a Stormwater Conveyance System permit:

• A stormwater conveyance system private pipe less than 12 inches in diameter that is outside of ROW and does not connect to ROW.
• Repairing or replacing in-kind private pipes that do not convey public runoff. This applies only when the hydraulic performance is not altered – e.g. the same pipe size and pipe material are used. (Note that other permitting may be required, such as buffer or land disturbance permitting.)

The  stormwater conveyance permit requires inspection submittals and as-built submittals.

As-Built Submittal Requirements

As-built documentation, and certification for both public and private stormwater conveyance systems, must be submitted to Raleigh Stormwater. At a minimum the following items shall be included/documented with the as-built submittal:

• Stormwater Conveyance As-Built Submittal Checklist: A completed copy of this checklist including the signed and sealed statement provided by a qualified North Carolina licensed PE or RLA which certifies that the as-built stormwater infrastructure (both public and private) complies with the approved plans and meets all UDO requirements.
• As-Built Drawings – A certified set of as-built drawings that redline the approved storm drainage plans. These drawings shall be signed and sealed by a North Carolina licensed PE or RLA, for stormwater infrastructure only.
• As-Built Survey Documents:
  • As-Built Survey – A certified post construction as-built survey, signed and sealed by a North Carolina Professional Land Surveyor (NCPLS), for stormwater infrastructure only

Pipe Inspection Submittal

The inspection results must be submitted to and accepted by Raleigh Stormwater to verify there are no defects in the stormwater conveyance system in the ROW or on private parcels. The following items shall be included/documented with the pipe inspection submittal:

• Stormwater Conveyance Pipe Inspection Checklist, completed, signed and sealed by a qualified North Carolina-licensed PE.
• Repair plan when defects are present, signed and sealed by a qualified North Carolina licensed PE.
• CCTV videos and reports, when applicable.
• Mandrel Test Report or Full-Length Laser Profiling for all Flexible Pipe, when applicable.
• North Carolina-licensed PE sealed NBIS-Compliant Bridge Inspection Report, when applicable.