Stormwater Program --
Stormwater Management Law

Introduction
Contacts (licensing)
Statutory sections
Rules
Forms
Models
Supplemental materials
Training
Other

Related pages: Erosion & Sedimentation Control Law; Nonpoint source pollution.

Introduction

Maine's Stormwater Management Law provides stormwater standards for projects located in organized areas that include one acre of more of disturbed area. Certain exemptions apply.

Contacts (licensing)

Most Land Bureau inquiries can be made using one of the fillable forms above.  Submitting the online form ensures that your inquiry, complaint or request for information will be viewed and responded to as soon as possible by a Bureau staff person. Because of the high volume of inquiries, it may take several days for you to receive a response or follow up.

Statutory sections

• Storm water Management 38 M.R.S. § 420-D
• Erosion and Sedimentation Control 38 M.R.S. § 420-C

Rules

• Chapter 500
• Chapter 501
• Chapter 502

Forms

• Stormwater Pre-Application
• Stormwater Management Law Permit Application (full)
• Certification form (used with standard condition # 7)
• Five-year recertification for long-term maintenance of stormwater management systems
• Minor revision
• Transfer
• Condition compliance
• Stormwater Application Checklist

Permit by Rule

• Stormwater Management Permit by Rule Booklet (complete)
  • PBR Application only
  • Appendix A, Notice of Termination for use with Construction General Permit only

Note: Altered forms will not be accepted.  If you believe an item does not apply, write "NA" or "not applicable" rather than deleting it.  Extending the length of a form in order to add more information is acceptable.

Models

Updated versions of the models as listed in the Stormwater management Rules, dated 23 December, 2006, are acceptable as long as the core methodology has not been changed. The use of models using major differences to the conceptual intent or any other approach at modeling stormwater detention and management would need to be approved by the DEP.

• TR-20
• TR-55
• WIN TR-55
• HEC HMS

A popular model is the HydroCAD Model used for modeling stormwater runoff. HydroCAD provides a wide range of commonly used drainage calculations including:

• SCS, NRCS, SBUH runoff hydrographs
• Rational Method with automatic IDF curves
• Hydrograph routing though ponds and reaches
• Automatic hydraulics and culvert calculations
• Automatic detention storage calculations
• Easy management of multiple rainfall events
• Easy-to-use graphical format usable on any PCs

Supplemental materials

• Stormwater Best Management Practices Manual (DEP)
• 5-Year Recertification for Long-term Maintenance of Stormwater Management Systems (info and FAQs)
• Maine Erosion and Sediment Control BMPs
• Standard conditions
• Lake Stormwater Phosphorus Compensation Fee Program
• List of towns with stormwater capacity (table also includes town with Site Law capacity or delegation -- see column headings) (pdf file)
• Urban impaired stream watershed map in Google Earth
• Long Creek Watershed Development Project Fees and Considerations
  To obtain hard copies of the materials listed above, call your nearest DEP regional office, or email.

Training

• The Maine Nonpoint Source Training & Resource Center provides training opportunities, publications, and videos.