The documents below are provided to assist facilities which are required to perform restoration of impervious surfaces as part of their registration under the General Permit for Stormwater Discharges Associated with Industrial Activity (State Permit No. 12-SW).

Guidance Documents

• Accounting for Stormwater Wasteload Allocations and Impervious Acres Treated - Final (August 2014)
• Accounting for Stormwater Wasteload Allocations and Impervious Acres Treated - Draft (June 2011)
• Chesapeake Bay Phase 5.3 Community Watershed Model 
• Maryland's Stormwater Program and Proprietary Practices
• MDE List of Reviewed Alternative/Innovative Technologies​
• Maryland Stormwater Design Manual
• Stormwater Design Guidance - Environmental Site Design and Innovative Technology (May 2013)

 
Contact Info

For more information on the General Permit for Stormwater Discharges Associated with Industrial Activity or Chesapeake Bay restoration, contact the Industrial and General Permits Division at (410) 537-3323.

Additional Information and Related Links

• Wastewater Permits