Site Restoration / Sediment Remediation

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Overview of Site Restoration/ Sediment Remediation

EQM’s site restoration experience includes sediment remediation, waterways diversion and treatment, hydraulic and mechanical dredging, waste management, and wetlands planting. EQM has conducted 17 major site restoration projects over the past 15 years. Individual job size has ranged from $10M to $48M, with a total value of $180M for all projects. The quantity of sediment dredged, treated, and disposed of at these sites ranges from 24,000 yd3 to 500,000 yd3, and the total quantity of sediment removed is more than 1,750,000 yd3. Contaminants of concern include heavy metals (primarily lead, mercury, copper, and cadmium) and TSCA and non-TSCA level PCBs.

Learn more about EQM and Site Restoration / Sediment Remediation

Call us at (800) 229-7495

Stream / River Diversion and Treatment

Our water diversion and treatment experience is demonstrated in five CERCLA task orders EQM performed as prime contractor that ranged in value from $2.9M to restore habitat in the St. Clair Shores AOC, MI to $74.0M in PCB, PAH, NAPL, and arsenic contaminated sediment and debris removal at four locations: Sheboygan Harbor/River site in WI, Buffalo River in NY, Lincoln Park/ Milwaukee River Channels in WI, and Menominee River in WI. EQM designed, constructed, operated, and maintained infrastructure for site access, entrances, and roads, solidification, wastewater treatment facilities, cofferdams, and silt curtains. Our team dredged, solidified sediment, managed off-site T&D, and performed site restoration. These TOs demonstrate source treatment and containment remedies, infrastructure construction, demolition, and restoration PWS elements.

Hydraulic / Mechanical Dredging

Our site restoration experience is demonstrated in five CERCLA task orders EQM performed as prime contractor that ranged in value from $2.9M to restore habitat in the St. Clair Shores AOC, MI to $74.0M in PCB, PAH, NAPL, and arsenic contaminated sediment and debris removal at four locations: Sheboygan Harbor/River site in WI, Buffalo River in NY, Lincoln Park/ Milwaukee River Channels in WI, and Menominee River in WI. EQM designed, constructed, operated, and maintained infrastructure for site access, entrances, and roads, solidification, wastewater treatment facilities, cofferdams, and silt curtains. Our team dredged, solidified sediment, man-aged off-site T&D, and performed site restoration. These TOs demonstrate source treatment and containment remedies, infrastructure construction, demolition, and restoration PWS elements.

Work included:

  • Both hydraulic and mechanical dredging and other related ancillary work
  • Temporary access road construction
  • Stream/river diversion
  • Design, construction, and operation of wastewater treatment facilities
  • Sediment characterization, processing, and solidification
  • Off-site waste disposal
  • Site/habitat restoration
  • Confirmatory sediment sampling following sediment removal
  • Hydrographic surveys to verify sediment quantities removed and associated pay values
  • Multimedia environmental monitoring
  • Regulatory permitting and compliance
  • Site health and safety management.

Some projects have involved development and implementation of sediment Beneficial Reuse strategies and overall project Green Remediation practices. Work has been performed primarily for the USEPA in EPA Regions 2, 5, 6, 9 and 10.

Waste Management

EQM offers comprehensive waste management services to assess regulatory, cost control, and compliance factors. EQM’s staff have over 20 years of experience in assessment, permitting, and related compliance for waste management projects, and have successfully worked with stakeholders at all levels of interest. Our combination of regulatory knowledge and experience along with our use of leading edge technology has allowed us to meet our client’s objectives in a cost-effective and timely manner. EQM’s waste management services include:

  • Environmental Site Assessments
  • Site Characterization Studies
  • Regulatory Support/Negotiation
  • RCRA Permitting
  • Waste Management Strategy
  • Soil Borings and Sampling
  • Waste Minimization
  • Groundwater Monitoring/Sampling
  • Risk-Based Closure Assessments
  • Closures
  • Soil/Groundwater Modeling/Mapping
  • Complete Site Restoration

Riverbank / Wetlands Planting

EQM has extensive experience in riverbank/wetlands planting. The following two projects demonstrate our experience in this area.

USEPA, Region 5 (Great Lakes National Program Office) Remediation of Ruddiman Creek Main Branch and Pond, USEPA Reg. 5 $13.6M

EQM completed the remediation of contaminated sediment from approximately 2.3 miles of creek, a 21-acre pond, and 39 acres of wetlands. The project required removal and solidification of 90,020 yd3 of PCB- and heavy-metal-contaminated sediment. In addition, EQM installed and operated an on-site water treatment plant and installed 7,500 feet of temporary road in the creek and an additional 650 feet of floating mat road in the wetland area. The project included replanting of 23 Michigan native species of plants and trees over an 80,000-ft2 area. Staging areas and project work areas were completed within 500 feet of local residences and the main city park. EQM performed extensive perimeter and personal sampling to ensure public safety. This project involved strong involvement with community outreach. In particular, EQM conducted multiple presentations to community organizations and city officials.

Lincoln Park:

EQM installed temporary infrastructures and provided facilities to investigate the extent of contaminated sediment at the site, remediated and removed contaminated sediments, sampled and analyzed contaminated sediments and provided confirmation sampling and analyses, transported and disposed of solid and TSCA waste generated from the contaminated sediments and infrastructure-impacted construction materials, constructed natural habitat features, and revegetated disturbed areas with native plantings in wetland areas and turf grass in upland areas as part of the site remediation restoration. These activities resulted in the removal of 52,456 yd3 of contaminated sediment and the transportation and disposal of 92,358.41 tons of solid waste and 4,972.42 tons of TSCA waste. Remediation efforts resulted in the removal of 2,330 pounds of PCBs and 12,683 pounds of PAH  contamination from 11.18 acres of the Milwaukee River stream bed.

A total of 1.62 acres of wetland habitat was restored with native seedlings, trees, shrubs, and herbaceous plants. A total of 11 log/root wads and 10 boulder clusters were installed to improve wildlife habitat.

 

Learn more about EQM and Site Restoration / Sediment Remediation

Call us at (800) 229-7495