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2018 Construction stormwater general permit in effect

Posted By MNLA eNews, Tuesday, November 6, 2018

The MPCA issued the 2018 NPDES/SDS General Construction Stormwater permit on August 1, 2018; see the Construction stormwater web page for complete details. Anyone submitting an application after August 1 will be covered under the revised permit. Those currently covered under the 2013 permit can continue to follow it until the project is complete, but must update their SWPPP to reflect the new requirements if the project continues past February 2020. There is no need to reapply for permit coverage.

What’s new?

The permit has a new, easier-to-read format with fewer pages. The requirements have not altered significantly; notable changes include:

  • Permittees no longer need to wait seven days for permit coverage on projects that don't require review. Coverage is effective once payment is received.   
  • Permittees will receive a copy of the permit instead of a coverage card after application.
  • The definition for “contractor” on the application has been clarified to mean the general contractor with operational control over the entire project on behalf of the owner, and not a subcontractor.
  • Permittees must first consider a volume-reduction practice, such as infiltration, for permanent stormwater treatment. The permit also clarifies that wet sediment basins and filtration systems are not volume-reduction practices.
  • Testing is required on the site of a permanent stormwater system to verify whether infiltration is prohibited for one of the reasons in the permit.
  • The permit clarifies that redundant sediment controls installed near surface waters need to be spaced five feet apart, and that sediment controls must be installed at the base of soil piles.

A full description of changes to the permit can be found here.

Tags:  irrigation  MPCA  permiting  stormwater management  water management 

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