The Challenge of Setting Post-Construction Design Standards

The U.S. Environmental Protection Agency stormwater regulations require regulated municipalities to develop and implement a program to control stormwater runoff from new development and redevelopment projects that disturb greater than one acre. These regulations require a combination of structural and/or nonstructural controls, a local ordinance to address post-construction runoff, and procedures to ensure long-term operation and maintenance. Stormwater management is moving toward the use of controls that minimize runoff through reduced impervious surfaces and infiltrate runoff from small storms onsite using distributed practices. However, many states and local governments are still working to define the specific standards used to achieve these goals. Although the EPA regulations recommend that stormwater programs attempt to maintain pre-development runoff conditions, the EPA has not set a national design standard to address post-construction runoff due to the challenges posed by the variety of available design methods and the vastly different local conditions, rainfall patterns, goals and concerns. The lack of a nationwide standard has resulted in a wide disparity in how states and local governments regulate post-construction stormwater.


  • English

Media Info

  • Media Type: Print
  • Pagination: pp 19-22
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01140492
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 21 2009 10:07PM