StreamSmart Crossings Mike Mullen, Division of Land Resource - - PowerPoint PPT Presentation

StreamSmart Crossings

Mike Mullen, Division of Land Resource Regulation

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION

Protecting Maine’s Air, Land and Water

Maine Department of Environmental Protection

• Main Office and Central Maine Region

28 Tyson Drive, Augusta (207)287-7688 * (800)452-1942

• Eastern Maine Region

106 Hogan Road, Bangor (207)941-4570 * (888)769-1137

• Southern Maine Region

312 Canco Road, Portland (207)822-6300 * (888)769-1036

• Northern Maine Region

1235 Central Drive, Presque Isle (207)764-0477 * (888)769-1053

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

This Is A Stream If It Has:

• A channel between defined banks

and at least 2 of the following: – Has a scoured mineral bed – Flows at least 6 months/year – Mapped on a U.S.G.S. topo map as a solid or dashed blue line – Contains fish, aquatic animals or aquatic vegetation – Is devoid of upland vegetation

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

Culvert Replacement

Exempt from permitting if:

• Erosion controls are used
• Does not block fish passage
• Installed to match natural

grade to avoid drops or perching

• Embedded in stream a

minimum of 1 foot or 25% Diameter (max 2 feet)

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

Permit By Rule (PBR)

• Fast and easy permitting

process

• For a project to qualify for

Permit-by-Rule, it must be designed and constructed in compliance with all applicable Chapter 305 Rules

• Chapter 305 Section 10 covers

stream crossings (bridges, culverts, fords)

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

Stream Crossings

• Fill slopes must be stabilized
• 3 times the cross sectional area of the stream

channel OR accommodate 25-year storm

• Surface water must be diverted through

vegetated buffer areas of at least 25’

• If working in less than 3’ of water, must divert

water around work area

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

Stream Crossings - Culverts

Culverts:

• No longer than 75 feet
• Follow alignment and grade of stream
• Be placed at or below streambed
• Back fill must be compacted
• Inlet and outlet banks must be riprapped

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

Water Management Is Critical

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

Jersey Barrier Cofferdam

Rule Requires A Diversion If Working In Less Than 3’ Of Water

Sandbag Cofferdam

www.maine.gov/dep