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This guide outlines the elements needed to complete and submit an application for a stormwater multi-sector general (MSGP) No Exposure Certification (NOE). This certification must be submitted to the Environmental Protection Agency (EPA) via their online Net-MSGP system, within the Central Data Exchange (CDX) platform. This guide provides a complete list of information that an applicant will need to complete the process. Gathering this information ahead of time will streamline and improve the accuracy of the permit application.
Submission of this NOE gives the EPA, or the designated state, notice that the operator does not require permit authorization under the agency’s stormwater MSGP for its stormwater discharges associated with industrial activity from the facility. A NOE is only allowable when conditions at the facility result in no risk of exposure to stormwater runoff. A NOE must be provided for each facility qualifying for the no exposure exclusion. If any industrial activities or materials are or will be exposed to precipitation, the facility is not eligible for the no exposure exclusion. In addition, the exclusion from National Pollutant Discharge Elimination System (NPDES) permitting is available on a facility-wide basis only, not for individual outfalls.
Before beginning the application process, the following set-up is necessary for access to the online applications: