HABITAT & WETLANDS RESTORATION
Great Lakes E&I routinely operates in waterfront settings performing complex work in sensitive ecological environments. Our experience includes numerous projects in riparian and intertidal wetlands, stream and river corridors, and ocean front settings. We understand the care and effort required to work in sensitive environments within the constraints of crucial tidal or biological work windows. We are also highly experienced working on and in water and on low strength materials. Our projects have included construction and remediation of wetlands, installation of water diversion and water control structures, dam and levee restoration, channel construction and rock armoring, removal of invasive plant species, and final restoration. Great Lakes E&I’s wetlands construction and remediation capabilities include design and construction of man-made wetlands; wetlands contouring/shaping; contaminated sediment excavation; stream channel construction and restoration; hazardous waste remediation; water management; and site restoration.
ANAHAUC NATIONAL WILDLIFE REFUGE
- Moat excavation of 24,032 cy
- Construction of 42,593 cy of perimeter levees
- Installation of seven water control structures
- Limited access to the site
- Working in an environmentally sensitive area
- Project team overcame extreme rainfall to complete the work
Great Lakes Environmental and Infrastructure (Great Lake E&I) was contracted by Ducks Unlimited, Inc. to create a duck habitat in the coastal plains of Texas. The project was located within the Anahuac National Wildlife Refuge just south of Winnie, Texas. The 34,000 acre refuge was created in 1963 and is home to an abundance of wildlife, from migratory birds, to alligators, ducks, bobcats, and more. The scope of work consisted of moat excavation totaling 24,032 cy, construction of 42,593 cy of perimeter levees, and installation of seven water control structures within the levee system to control water levels in the habitat.
SEARS POINT WETLAND RESTORATION PROJECT
SONOMA COUNTY, CALIFORNIA
- Excavation of 1 million cy over 955 acre parcel designated for tidal wetland
- Excavation of 6.5 miles of tidal channels 240 feet wide
- Construction of 2.5 miles of new tidal levee
- Construction of 500 marsh mounds
- Levee lowering of 7,000 feet of the outboard levee
- Hydraulic dredging of 57,100 cy for construction of a pilot channel
- Excavation of 10,200 cy of saturated sediment from the Midshipman Breach
- Excavation of 15,200 cy of saturated sediment from the Dickson Breach
- Milestone for the Midshipman Breach
In cooperation with the California Department of Fish and Game (CDFG) and the U.S. Fish and Wildlife Service (USFWS), the Sonoma Land Trust (SLT) working in cooperation with Ducks Unlimited planned, designed, and secured funding for the restoration of tidal wetlands and rehabilitate diked wetlands and upland habitats for a wide range of species, to protect open space and to develop public access and educational opportunities, including extending the San Francisco Bay Trail.
HAMILTON WETLANDS RESTORATION
- Construction of a 5,200 lf perimeter levee and a 10,000 lf containment berm
- Grading of 220 acres of dredged bay mud into seasonal wetlands
- Placement of 8 million cy of dredge material
- Inundation and maintenance of water levels on 300 acre of tidal wetland
area to prevent desiccation of Bay Mud
The U.S. Army Corps of Engineers, the California State Coastal Conservancy, and the San Francisco Bay Conservation and Development Commission wanted to restore a tidally influenced wetland at the former Hamilton Army Airfield. Great Lakes E&I team members began work in 2005, constructing a 5,200 lf perimeter levee and a 10,000 lf berm to contain dredged Bay Mud.