On March 2, 2020, the Environmental Protection Agency (EPA) proposed its new Multi-Sector General National Pollutant Discharge Elimination System Permit (MSGP), which authorizes the discharge of stormwater associated with industrial activity. 85 Feb. Reg. 12,288 (March 2, 2020). The 2015 MSGP expires on June 4, 2020. The MSGP authorizes stormwater discharges associated with a wide range of facilities and activities, including oil and gas, mining and mineral processing and manufacturing, among other operations.
The MSGP authorizes discharges in only those states where EPA is still the NPDES permitting authority (Idaho, Massachusetts, New Hampshire and New Mexico), Indian country, US Territories and other select jurisdictions. However, most states model their state-specific industrial stormwater permits on the EPA’s MSGP, which makes this permit important as the trendsetter.