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​​General Permit for Stormwater Associated with Construction Activity

General Permit For Discharges of Stormwater Associated With Construction Activity
Maryland General Permit No. 14-GP 

​​​The Maryland Department of the Environment (MDE) issued the General Permit for Stormwater Associated with Construction Activity, MDRC (General Permit), referred to as the 14-GP, which took effect on January 1, 2015.  

The permit is necessary to protect water quality and meet federal and State requirements under the Code of Federal Regulations (40 CFR 122.26 and 40 CFR 450) and the Code of Maryland Regulations (COMAR

 ​ NOTICE - Permit Renewal Update (updated as of 8/11/22)  ​

The final 20-CP permit is expected to be issued during winter 2022 or early 2023.  The 20-CP will replace the 14-GP.

A Tentative Determination for the 20-CP permit was proposed in late 2020.  Subsequently, the Department held a Public Hearing and accepted many comments.  The Department is now seeking comments on four subject areas for additional input to prepare the final permit.  The details regarding the request for additional comments can be found in the public notice below

As indicated on the notice, these additional comments are due no later than the close of business on or before Monday, September 12, 2022.     

More information, including a copy of the tentative determination drafts, can be found at the bottom of this page.

Current Permit and Guidance Documents (14-GP)


  • ePermits
    • The Notice of Intent (NOI) for this General Permit is submitted electronically through the ePermits website, as are Notices of Termination, Transfers, and the Declaration of Intent (DOI).
    • The NOI and DOI must be electronically signed by the person in authority from the developer or builder; however, the system will allow agents and consultants to prepare any part of the NOI necessary, then send it to the person who will submit it as the responsible party.
    • Federal regulations require that applicants must submit certain information to MDE to validate their authorization to submit an NOI on behalf of a responsible party.  To meet this requirement, MDE developed a Subscriber Agreement Template Form (.docpdf).
    • Technical issues with the system should be submitted to the technical support team via the 24/7 Support link at the top of the system screen.
    • Public Notification Period - When NOIs with a signed Declaration of Intent (DOI) are submitted to MDE, a 14 day Public Notification Period​ is initiated and information is published on MDE's website.  Interested parties may review NOIs during the public notification period.  Please contact the appropriate Erosion and Sediment Control (E&SC) authority to review plans.  Interested parties may submit concerns about the E&SC to the approval authority and to MDE.  Concerns should be supported by a detailed, written explanation as to why the E&SC Plan fails to meet State standards.
  • Construction Activity Inspection Form  (.docpdf)
  • Emergency Authorization Request Form​

20-CP Tentative Determination Documents​

Any questions regarding the proposed permit should be directed to Paul Hlavinka at or by telephone at 410-537-3323, between the hours of 8:00 AM and 5:00 PM, Monday through Friday.

Contact Info​

Please contact the Department at (410) 537-3019 for more information.

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