Final General Permit

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Storm Water Discharge from Small and Large Construction Activities

• Public Notice (PDF 14K)
• General Permit OHC000003 (PDF 176K)
  • Attachment A (U.S. EPA Rainfall Erosivity Waiver Fact Sheet) (PDF 1,796K)
• Responsiveness Summary for Significant Issues (PDF 34K)
• Responsiveness Summary for Additional Issues (PDF 117K)

The NPDES construction general permit (CGP) renewal authorizes NPDES permit coverage for those construction activities involving 1 or more acres of land disturbance. The expired CGP number is OHC000002 and the CGP renewal number is OHC000003. When applying for NPDES permit coverage for construction activities, please include general permit number OHC000003 on the notice of intent (NOI) application.

The CGP renewal contains the following new clarifying language and new requirements:

1. Increasing the sediment settling pond size and drain time (Part III.G.2.d.ii)
2. Post-construction (Part III.G.2.e)
   • Public road transportation projects
   • Offsite post-construction mitigation
   • Option for non-structural post-construction BMPs
3. Concentrated storm water discharges to wetlands (Part III.G.2.f)
4. Construction site inspection frequency reduction for dormant areas (Part III.G.2.i)
5. Requiring a maintenance agreement for all structural post-construction BMPs prior to terminating general permit coverage (Part IV.B.1)

Over the next year, Ohio EPA will mail notification letters to active permittees of CGPs OHR100000 and OHC000002 to inform them of the CGP reissuance (OHC000003). The notification letter will inform the permittee that they must notify Ohio EPA by letter, and will include a template letter for their signature, if they intend to continue CGP coverage. Permittees have 90 days to respond to the notification letter; if they do not respond, coverage will be terminated automatically. There is no fee for permittees to continue coverage under the CGP renewal.

Those permittees with coverage under previous CGPs who initiate land disturbance activities prior to receipt of the notification letter will not need to modify their storm water pollution prevention plans (SWP3) to comply with new requirements of the CGP renewal.

For additional information contact:

Mike Joseph
DSW Storm Water Section
(614) 752-0782
e-mail: michael.joseph@epa.state.oh.us

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