Meet the requirements of federal NPDES and state MS4 programs

MS4 Compliance

Water is the most essential component of life. That’s why keeping it clean is so important.

Stormwater runoff is rain or snowmelt that flows over impervious surfaces, such as paved streets, parking lots, and other impermeable materials. This runoff isn’t absorbed into the ground. Instead, it gathers pollutants like trash, chemicals, oils, and more – pollutants that can harm our ponds, rivers, streams, lakes, and oceans.

The National Pollutant Discharge Elimination System (NPDES) stormwater program regulates stormwater discharges from the following sources: municipal separate storm sewer systems (MS4s), construction activities, and industrial activities.

Due to their population density or their proximity to cities with a large population density, many municipalities in Maine must comply with the Maine Department of Environmental Protection (MDEP) MS4 permit. Additionally, any state or federally-owned facilities located inside the municipal boundary of a regulated MS4 must also comply with the MDEP MS4 permit. These regulated entities must conduct certain MS4-related compliance activities including:

  • Public Education and Outreach
  • Public Involvement and Participation
  • Illicit Discharge Detection and Elimination
  • Construction Site Stormwater Runoff Control
  • Post-Construction Stormwater Management in New Development and Redevelopment
  • Pollution Prevention/Good Housekeeping for Municipal/Facility Operations

Municipal Separate Storm Sewer System refers to a regulated entity’s sub-surface and surface stormwater management infrastructure system which includes:

  • Catch basins
  • Storm drains
  • Open ditches
  • Other stormwater BMPs

SEE has decades of combined experience assisting both municipal and state or federally-owned facilities meet the requirements of federal NPDES and state MS4 programs. We can help you develop a plan to meet MS4 compliance requirements, including employee training and stormwater management plan implementation.

In addition to this assistance, we also partner with local consultants who specialize in the development of geographic information systems (GIS) to manage environmental data.

Whatever your needs, we can meet them – after all, we currently assist more regulated MS4s in Maine than any other consulting firm. Our approach to MS4 stormwater compliance has been thoroughly vetted during MDEP MS4 audits with multiple clients. We can help you meet MS4 compliance requirements, avoid unnecessary fines, and most importantly, prevent harmful pollutants from being carried into our waters by stormwater.

To learn more about our MS4 compliance services, please call us at (207) 949-0074.