Maine Stormwater Management
Maine State Overview
The State of Maine and the Maine Department of Environmental Protection (MaineDEP) Stormwater Program was implemented to work toward protecting and restoring surface water and groundwater impacted by stormwater. The Maine Stormwater Program includes the regulation of stormwater under three principle regulations:
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Site Location of Development Law (Site Law).
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Stormwater Management Law.
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Waste Discharge Law through the Maine Pollutant Discharge Elimination System (MEPDES).
An owner or operator of a project site has the following rules and regultions to consider when applying for permit coverage under the Maine Pollutant Discharge Elimination System (MEPDES):
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If an owner or operator will be engaging in construction activity (clearing, grading, or excavation) that will disturb one (1) acre or more land, or will disturb less than one (1) acre of total land area but is part of a common plan of development or sale, and the common plan of development or sale will ultimately disturb equal to or greater than one (1) acre he/she must apply for permit coverage.
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Any other construction activity designated by the MaineDEP, based on the potential for contribution to a violation of Water Quality Standard (WQS) or for a significant contribution of pollutants to State waters, he/she must apply for MEPDES General Permit coverage for “Site Law” and “Stormwater Management Law.”
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“Site Law” is all construction projects classified as “subdivisions.”
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"Stormwater Management Law" applies to project and portions of projects that do not involve industrial or Municipal Separate Storm Sewer Systems (MS4s) – Both are handled by the Land Use Regulation Commission (LURC).
Site Location of Development Law (Site Law).
Read more »
Maine - DEP - Overview of the Requirements of the CGP
Maine - DEP - Notice of Intent (NOI) to comply with the CGP
Maine - DEP - Notice of Termination (NOT) for use with CGP
Maine - DEP - Stormwater Management Design Manual - Volume III - Technical Design Manual
Maine - DEP - MPDES General Permit - Construction Activity (CGP)
Maine - DEP - Appendices - Basic Performance Standards
Maine - DEP - Notice of Intent - Supplemental Directions
Maine - DEP - Stormwater Management Design Manual - Volume I - Stormwater Management Manual
Maine - DEP - Stormwater Management Design Manual - Volume II - Phosphorus Control Manual
Maine - DEP - Erosion and Sediment Control Practices Field Guide for Contractors
ME - DEP - Notice of Intent (NOI) to comply with MS4 General Permit
ME - DEP - Instructions got using the model SWPPP for Municipal & State Highway Garages
ME - DEP - MER042000 - General Permit to Discharge Stormwater from State or Federally Owned MS4s
ME - DEP - MER043000 - General Permit to Discharge Stormwater from DOT & Turnpike Authority MS4
ME - NEIWPCC - Illicit Discharge Detection and Elimination Manual - Handbook for Municipalities
ME - DEP - MER041000 - General Permit to Discharge Stormwater from Small MS4s
ME - DEP - MS4 General Permit - Fact Sheet
ME - DEP - MEG190000 - Post-Construction General Permit to Discharge in the Long Creek Watershed
ME - DEP - Notice of Termination (NOT) for use with MEG190000
ME - DEP - Permit Application for MEG190000 (Maine Waste Discharge Law)
ME - DEP - Notice of Intent (NOI) to comply with MEG190000
ME - DEP - Visual Monitoring Standard Operating Procedure (SOP)
ME - DEP - No Exposure Certification (NEC) Form
ME - DEP - MSGP Notice of Termination (NOT) Form
ME - DEP - Annual Report Form
ME - DEP - MER050000 - MEPDES Permit - Multi-Sector General Permit (MSGP)
ME - DEP - Active No Exposure Status List
ME - DEP - Effluent Monitoring Standard Operating Procedure (SOP)
ME - DEP - Quarterly Inspection Checklist
ME - DEP - Visual Monitoring Instructions
ME - DEP - Visual Monitoring Form
ME - DEP - Active Notice of Intent (NOI) List
ME - DEP - Corrective Action Form
ME - DEP - MSGP Notice of Intent (NOI) Form
New England
Thelma Murphy
Email Thelma »
(617) 918-1615
US EPA, Region 01 in New England / Office of Ecosystem Protection
5 Post Office Square, Suite 100(OEP 06-1)
Boston, MA, 02109-3912
Rhonda Poirier
Maine Department of Environmental Protection
(207) 592-6233
Email Rhonda »
Agency Website »
17 State House Station
Augusta, ME, 04333
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