The construction stormwater general permit issued by the Minnesota Pollution Control Agency (MPCA) will expire August 1, 2018. The draft construction stormwater permit and associated fact sheet were placed on public notice which ended on May 23, 2018. The final permit and the response to comments document will be posted on this page as well as the construction stormwater webpage when available. More information on the draft permit can be found in the Fact Sheet:
On April 17, 2018 the MPCA hosted a public informational meeting via webinar. During the meeting MPCA staff presented the changes proposed in the draft permit as listed in the guide to permit changes document and answered questions.
To see a recording of the April 17, 2018 meeting (audio starts at 0:58), click on this link
To view the slides used for the meeting, click on this link
The format of the permit has changed considerably. Due to the change in format, a traditional red lined version of the permit is not possible. Therefore, the MPCA is providing a document titled: Guide to Permit Changes. This document lists all changes in permit language that result in a change of policy, meaning or expectation. The list is also included with the Fact Sheet as Attachment A. Many of the permit provisions were re-written, combined or split apart without changing the policy, meaning or expectation and are not included in the Guide to Permit Changes.
An updated version of the MPCA's special and impaired waters search tool is now available. The information regarding specific waters has been updated to reflect the draft permit language and also can be used to find the emergency response areas and areas of high or very high vulnerability within a drinking water supply management area.
The draft permit refers readers to the MN stormwater manual in the infiltration section regarding prohibitions on contaminated properties (item 16.15). A page has been created to guide users through this requirement: Stormwater Infiltration and soil/groundwater contamination: A guide to the Construction Stormwater Permit requirements
The MPCA has also created a manual page to display the permit language along with links to additional guidance, rule references and any helpful information regarding permit requirements. The MPCA intends to maintain this page and add additional information in the future. 2018 CSW Permit.