Services
Environmental
Overview
Remediation and restoration, managed end to end
Environmental work rewards preparation, documentation, and crews who understand what’s in the ground. Kolb handles the full sequence, assessment support, excavation and disposal of contaminated or impacted soils, erosion and sediment control, wetland and stream construction, and final restoration, under regulatory oversight from agencies like the DNR, the U.S. Army Corps of Engineers, and the EPA. Because we self-perform the majority of scope, compliance and schedule stay in our hands, not spread across a chain of subcontractors.
Full scope
The full environmental scope, under one contract
Environmental projects aren’t a single task. They’re a regulated program of remediation, controls, and restoration. Kolb self-performs and manages the entire scope, so nothing falls between subcontractors.
Remediation & Contaminated Soils
Safe excavation, handling, and disposal of contaminated and impacted material on regulated sites.
- Impacted & contaminated soil excavation
- Hazardous material handling & transport
- Off-site disposal & load tracking
- Equipment & personnel decontamination
Erosion & Sediment Control
SWPPP-driven controls that keep sediment on site and the job permit-compliant.
- SWPPP implementation & maintenance
- Silt fence, wattles & inlet protection
- Stabilized construction entrances
- Inspection & documented reporting
Wetland & Stream Mitigation
Construction and rehabilitation of wetlands, streambanks, and aquatic habitat to plan.
- Wetland construction & rehabilitation
- Streambank stabilization & grading
- Channel & pond excavation
- Native seeding & habitat restoration
Site Restoration & Compliance
Returning the site to a stable, vegetated, and documented final condition.
- Final grading & soil amendments
- Seeding, mulching & tree planting
- Geotechnical & environmental testing
- Waste analysis & compliance reporting
Capabilities
What our environmental crews deliver
Contaminated Soil Removal
Excavation, handling, and off-site disposal of impacted and contaminated soils.
Erosion & Sediment Control
SWPPP-compliant controls that keep sediment contained and the site permit-ready.
Wetland & Stream Work
Wetland construction, streambank stabilization, and aquatic habitat restoration.
Landfill & Cap Construction
Cell construction, liner and geomembrane installation, capping, and closure.
How we work
A controlled process, assessment to restoration.
One team owns the site from initial assessment support through final restoration and compliance reporting.
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Problems we solve
The conditions that need a specialist
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Contaminated or impacted soils
We excavate, handle, and dispose of regulated material safely, with load tracking and decontamination, so the site clears its environmental requirements.
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Sediment leaving the site
SWPPP-driven erosion and sediment controls keep soil and runoff where they belong and keep the job inspection-ready from first storm to closeout.
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Degraded wetlands & streams
We build and rehabilitate wetlands, stabilize streambanks, and restore aquatic habitat to agency-approved plans and strict environmental guidelines.
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Regulatory & documentation burden
Testing, waste analysis, and compliance reporting are built into the work, giving agencies and owners the documented record the project requires.
Clean ground, restored habitat, documented compliance. We deliver it.
Safety
Safety is a culture, not a number.
For us, safety is more than an EMR figure. It’s how every crew shows up, every day. From daily planning and hazard analysis to ongoing crew training, we build safety into the work so our people go home safe and your project stays on track.
Daily hazard analysis
Every crew plans the work and the risks before it starts.
Ongoing safety training
Continuous training keeps our people sharp and certified.
Documented compliance
Full reporting and inspection coordination on every job.
Selected work
Environmental ground we've delivered
Weldon Spring & Times Beach
Clearing, demolition, and safe handling and disposal of contaminated material on EPA Superfund cleanup sites.
Lakeside 370 Wetlands
Excavation and utility work across an 800-acre site: 6 million cubic yards moved to create a 150-acre lake and wetland habitat.
Upper Cedar Creek Reclamation
Streambank stabilization, impoundment neutralizing, and native seeding to rehabilitate a damaged Missouri watershed.