Remediating Impacted Sediments & Restoring Natural Environments
Brennan restores wetlands, coastlines, rivers, and sensitive aquatic environments through remediation, dredging, dewatering, water treatment, and habitat restoration.
Built for Restoration Work in Sensitive, Water-Based Environments Environmental Restoration Services
Environmental restoration requires careful planning, technical knowledge, specialized equipment, and respect for the natural systems being improved. We easily operate in the places where restoration can be most complex, including wetlands, marshes, rivers, lakes, shorelines, industrial waterways, and dense urban environments.
Our experience in wetland and habitat restoration dates back 1980s to the Upper Mississippi River Environmental Management Program, one of the largest restoration programs ever undertaken on a major waterway. Since then, Brennan has reclaimed and restored habitat in sensitive marine environments, across the country.
Because Brennan can work on land, in the water, and within wetland areas, we can often deliver complete restoration solutions without relying on costly temporary roads, extensive drainage systems, or unnecessary deep-access dredging.
Turn-Key Restoration, Remediation, and Water-Based Construction Support Areas of Focus
Brennan provides turn-key environmental dredging, capping, dewatering, and water treatment services that are right-sized to fit each unique project. We combine marine construction, environmental remediation, wetland restoration, habitat improvement, and specialized access capabilities to help clients move from impacted conditions to restored environments.
Restoring Wetlands, Lakes, Rivers, and Wildlife Habitat Habitat Restoration
Brennan is dedicated to the preservation and rehabilitation of environmentally sensitive wetlands, lakes, and rivers. Our habitat restoration teams help clients restore natural systems impacted by contamination, erosion, invasive species, industrial activity, navigation changes, development, or aging infrastructure.
From remote locations to dense urban areas, we complete full wildlife habitat restoration projects using equipment and methods suited to the site. Brennan understands how to work in sensitive marine environments while protecting surrounding resources and supporting long-term ecological recovery.
Key Capabilities
- Wildlife habitat restoration
- Lake and river restoration
- Wetland restoration
- Marsh restoration
- Shoreline restoration
- Invasive species removal
- Golden mussel eradication
- Native vegetation support
- Habitat grading and shaping
- Clean material placement
- Restoration in remote and urban settings
- Restoration after environmental remediation
- Work in sensitive marine environments
Impacted Sediment Removal With Less Disruption to Wetlands Wetland Remediation
Traditional wetland remediation can require temporary roads, drainage structures, or levee systems that may damage the wetland before it can be restored. Brennan often uses customized amphibious equipment and project-specific methods to reduce the need for costly temporary roads, shallow-draft dredges, or draining the marsh.
Our amphibious equipment is larger than what is typically available on the rental market and can excavate, transport, and transfer contaminated sediment across a variety of wetland conditions. When the water is too deep and the ground is too unstable for traditional equipment, or when shallow water and dense vegetation make barge access difficult, Brennan’s amphibious equipment provides an effective solution.
Key Capabilities
- Wetland remediation
- Dredging
- Environmental Capping
- Treatability testing
- Dewatering, geotextile tubes
- Water treatment
- Treatability testing
- Impacted sediment removal
- Amphibious excavation
- Amphibious material transport
- Work in unstable wetland conditions
- Reduced reliance on temporary roads
- Reduced need to drain marsh areas
- Site-specific access planning
- Restoration following sediment removal
Specialized Equipment for Marshes, Wetlands, and Difficult Ground Conditions Amphibious Equipment & Sensitive Site Access
Brennan’s amphibious equipment allows crews to work in environments where traditional construction equipment cannot operate effectively. This equipment has extremely low ground pressure and can float fully loaded when required to cross channels or lakes.
That capability is especially important for restoration projects where access is part of the challenge. Brennan can reach impacted areas while minimizing unnecessary disturbance to the surrounding wetland, marsh, or aquatic habitat.
Key Capabilities
- Low-ground-pressure equipment
- Amphibious excavators and support equipment
- Access across soft, wet, and unstable ground
- Floating capability for channels and lakes
- Excavation, transport, and transfer of impacted material
- Reduced site disturbance
- Remote restoration access
- Sensitive ecosystem access planning
Removing Impacted Sediment With Precision & Control Environmental Dredging
Brennan provides environmental dredging services for restoration projects involving impacted sediment, contaminated waterways, wetland systems, lakes, rivers, harbors, and industrial sites. We use dredging methods selected around site conditions, sediment characteristics, water depth, vegetation, access, disposal needs, and environmental requirements.
Where floating access is possible, Brennan can hydraulically or mechanically dredge using portable, shallow-draft dredges capable of digging through heavy vegetation while maintaining production rates. Paired with debris management, this can be a cost-effective option for wetland and restoration projects.
Key Capabilities
- Environmental dredging
- Impacted sediment removal
- Hydraulic dredging
- Mechanical dredging
- Shallow-draft dredging
- Diver-assisted dredging
- Dredging through heavy vegetation
- Debris management
- Sediment transport
- Water quality controls
- Restoration dredging
- Dredging in wetlands, rivers, lakes, and sensitive environments
Right-Sized Systems for Each Restoration Project Dewatering & Water Treatment
Every restoration site is different. Brennan provides turn-key dewatering and water treatment services that are right-sized to fit each project’s sediment, water, space, schedule, and compliance needs.
We help clients manage dredged material, process water, contact water, decant water, and other restoration-related flows in a way that supports safe project execution and environmental compliance. By integrating dredging, dewatering, and treatment, Brennan helps reduce handoffs and keep complex restoration projects moving.
Key Capabilities
- Dredged material dewatering
- Material separation
- Treatability testing
- Industrial water treatment
- Mobile water treatment
- Water quality management
- Site-specific system design
- Treatment system operation
- Compliance support
- Integration with dredging and restoration work
Rebuilding Wetlands After Remediation Wetland Restoration & Reconstruction
Once material is removed, Brennan can rebuild and restore the wetland using clean materials. The current wetland remediation page notes that Brennan can install clean sand, engineered caps, organic black dirt, and native vegetation using much of the same equipment used for excavation and sediment handling.
Restoration may include material from nearby borrow sites or distant locations, depending on project requirements, budget, access, and ecological goals. Brennan’s Environmental Group can help develop a plan that meets project-specific needs while supporting long-term wetland function.
Key Capabilities
- Wetland reconstruction
- Clean sand placement
- Engineered cap installation
- Organic black dirt placement
- Native vegetation installation support
- Grading and shaping
- Beneficial reuse material coordination
- Restoration material transport
- Marsh and wetland rebuilding
- Post-remediation restoration support
Construction Support for Restoration & Remediation Projects Marine & Remedial Construction
Environmental restoration often requires more than sediment removal and planting. It may also involve water control structures, shoreline stabilization, isolation barriers, access improvements, engineered caps, habitat features, and other marine or remedial construction elements.
Brennan brings marine construction and environmental expertise together to help clients complete restoration projects safely, efficiently, and with fewer handoffs between contractors.
Key Capabilities
- Marine construction for restoration projects
- Remedial construction
- Isolation and containment support
- Shoreline stabilization
- Water control structures
- Engineered cap construction
- Habitat feature construction
- Temporary access systems
- Site restoration and finish grading
- Construction support in sensitive environments
One Partner for Remediation, Restoration, and Long-Term Recovery Why Brennan for Environmental Restoration?
Environmental restoration projects may involve impacted sediments, unstable wetland conditions, difficult access, sensitive habitats, water management, regulatory requirements, and multiple stakeholders. Brennan brings the integrated team needed to manage that complexity.
Our environmental specialists, dredge operators, dewatering and water treatment teams, marine construction crews, amphibious equipment operators, survey teams, and project managers work collaboratively with you to develop practical solutions and execute them safely in the field.
What Sets Brennan Apart
- Award-winning safety and environmental performance on safety-critical jobsites
- Transparent project communication from design through closeout
- Turn-key habitat restoration, wetland remediation, dredging, material handling, water treatment, and remedial construction under one team
- Customized amphibious equipment for unstable, remote, and sensitive sites
- Union craft professionals trained in complex marine environments
- Proven innovative problem solving to keep projects moving
Total Quality Management Across the Organization
- ISO 9001 (Quality Management Systems)
- ISO 14001 (Environmental Management)
- ISO 45001 (Occupational Health and Safety Management)
- ASME NQA-1 (2022), 10 CFR 50 Appendix B, and 10 CFR Part 21
Whether your project involves impacted sediment removal, wetland remediation, habitat restoration, environmental dredging, dewatering, water treatment, or marine construction in a sensitive environment, Brennan has the people, equipment, and experience to help restore the site with confidence.
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