General Discharge Permit

General Permit for Discharges from Tanks, Pipes, and Other Containment Structures at Facilities other than Oil Terminals
Maryland General Permit No. 11-HT

Important Announcement - Drafting Underway for General Discharge Permit 17-HT; 11-HT Coverage to be Administratively Extended

The Department has begun drafting the new 17-HT permit. In the event that a new 17-HT permit is not finalized, the 11-HT permit shall be administratively extended beyond its expiration date of February 28, 2017. The terms and eligibility requirements under that permit continue in full force and effect until a final determination is issued on the 17-HT permit. Those registered under the 11-HT permit DO NOT have to submit for renewal at this time, but should continue following the terms of your 11-HT registration. Current permit registrants will continue to receive notification letters regarding progress of the renewal, including notification of a deadline to renew. This webpage will also be updated regularly to reflect current status.

11-HT Permit Information

The 11-HT general permit became effective on March 1, 2012.


  • General Permit No. 11-HT for Discharges from tanks, pipes and other containment structures at facilities other than oil terminals


Supplemental Information

Contact Info

If you have additional questions or would like more information, please contact the Wastewater Permits Program, Industrial & General Discharge Permits Division at 410-537-3323.

Additional Information and Related Links