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Are Your Sites Compliant?

Significant changes to Maryland’s Stormwater General Permit regulations require action now for industrial and construction activity. In addition, a major update to the MDE Stormwater Design Manual will have wide-ranging impacts.

Contact EA for Assistance

There are significant changes to Maryland’s Stormwater General Permit regulations this year.

20-SW — Industrial Activities

  • Permit regulations were updated in 2023 to authorize the discharge of stormwater associated with industrial activity.
  • New requirements include changes to benchmark thresholds, Environmental Justice requirements, and PCB sources.

20-CP — Construction Activity

  • Effective as of 01 April 2023, permit updates are required for all sites disturbing greater than 1 acre of disturbance.
  • All previous permits under 14-GP have until 30 September 2023 to obtain coverage or will be terminated.
  • 20-CP is generally similar to 14-GP but includes new requirements for some sites including enhanced inspection and SWPPP.

Maryland A-StoRM

  • MDE released their Proposed Stormwater Management Regulatory Requirements for New Development and Redevelopment in Maryland on 26 July 2023, which will change stormwater management requirements for projects in Maryland.
  • Updates are part of Maryland’s overall plan to mitigate urban flooding and improve stormwater flood management.

 

LET US HELP YOU

NAVIGATE THE 2023 UPDATES TO THE MARYLAND STORMWATER GENERAL PERMITS

Contact:

Headshot of Bill BrooksBill Brooks
410.584.7000
Email Bill

EA Stormwater Capabilities

EA has over 40 years of experience designing, monitoring, and mitigating stormwater management programs for construction sites and industrial facilities. Our comprehensive services include:

  • Civil & environmental engineering
  • Closed & open system drainage infrastructure
  • Best management practices
  • Structural stormwater practice retrofits
  • Hydrologic & hydraulic evaluations
  • Stream restoration
  • Outfall & channel evaluations & stabilization
  • Floodplain studies & modeling
  • Flood control analyses
  • Grant funding support
  • Construction oversight
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EA Engineering, Science, and Technology, Inc., PBC headquarters
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