General Permits

A "general permit" covers multiple individual discharge sources and locations that have the same type of discharges and involve situations where the Department determines there is a relatively low risk for significant environmental impact. General permits may be issued for different specific categories of discharge activities.

Antifouling Paint Contaminated Wash Water. Effective October 14, 2014. Contact: Pam Parker (207) 485-3038

Application of Herbicides, Piscicides. Contact: Gregg Wood (207) 287-7693

  • Herbicides for the Control of Invasive Aquatic Plants. Effective April 3, 2017
  • Piscicides for the Control of Invasive Fishes. Effective August 29, 2014

Aquatic Pesticides for the Control of Mosquito-borne Diseases. Effective July 17, 2015. Contact: Gregg Wood (207) 287-7693

Discharge of Pesticides (Incidental and Unintended Discharges of Pesticides to Surface Waters). Effective March 2, 2015. Contact: Gregg Wood (207) 287-7693.

Net Pen Aquaculture. Effective April 10, 2014. Contact for permitting: Gregg Wood (207) 287-7693. Contact for compliance: Clarissa Trasko (207) 941-4572.

Post Construction Discharge of Stormwater in the Long Creek Watershed. Effective April 21, 2015. Contact: Alison Moody (207) 615-8936.

Multi-Sector Stormwater (MSGP) for Stormwater Discharge Associated with Industrial Activity. Effective December 7, 2016. Contact: Rhonda Poirier (207) 592-6233.

Municipal Separate Stormwater Sewer System (MS4). Effective July 1, 2013. Contact: Rhonda Poirier (207) 592-6233.

Waste Snow Discharge. Effective February 28, 2014. Contact: Gregg Wood (207) 287-7693.

Related page: Opportunity for Public Comment