General Discharge Permit

General Discharge Permit For Discharges from Mineral Quarries, Borrow Pits, and Concrete and Asphalt Plants
Maryland General Permit No. 15-MM

Determination for General Discharge Permit No. 15-MM (NPDES No. MDG49), effective May 1, 2017 

The 15-MM general permit became effective on May 1, 2017. Permittees who were registered under the 10-MM have until November 1,​ 2017 to apply for registration under the 15-MM permit.

​Information Session on Applying for General Permits: Learn How to Complete Your NOIs and SWPPPs!

MDE is scheduling several monthly sessions this summer regarding NPDES General Permit for Mineral Mines (15-MM).  The Department will be covering how to fill out a Notice of intent (NOI) and Stormwater Pollution Prevention Plan (SWPPP), as well as an overview of changes that have occurred from the previous permit.  The next training presentation is scheduled for August  11, 2017 at 10:00 AM at the Maryland National Ready Mixed Concrete Association Education Center located at 719 Ellsworth Drive Silver Spring, MD 20910.

15-MM Permit


Supplemental Information

10-MM Permit

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

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