Regulatory Agency: Ohio Environmental Protection Agency–Division of Emergency Response and Remediation
Contaminants: VOCs, SVOCs, and Metals
Remediation: Site wide Remedial Investigation and Feasibility Study, bench scale design, In-situ Stabilization and capping of sludge materials, in-place closure of four landfill areas, and closure of chemical production areas.
Scope: Investigate, Design/Build Lump Sum Remediation to ClosureProject Summary
- Provided a fixed price incentive-based performance contract for remediation and closure.
- Using a Risk-Based Closure approach, ESI demonstrated the appropriateness of an in-place closure remedy for six on-site lagoons and avoid an expensive off-site disposal remedy.
Project Details
ESI completed the investigation of a 130-acre petrochemical facility including six industrial wastewater sludge lagoons, four landfill areas, a buried drum area, and a 30 acre former production area.
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Under a fast-track approach, Enviro-Sciences investigated and removed buried drums from an isolated area of the site. The fast-track approach for this area fostered an early positive working relationship with the Ohio EPA.
Using investigation data and a risk-based closure approach, in-place closure was selected for the six impoundment areas as part of an Interim Action for the facility. The closure involved in-situ stabilization of approximately 110,000 yards of sludge materials and installation of a final capping system.
To reduce long term operation and maintenance and to minimize the footprint of the closed impoundment areas, sludge materials from three lagoons were consolidated into the remaining lagoons prior to capping.
The lagoons were cleaned and closed to maximize the developable area at the site. In-place closure was also completed at four on-site landfill areas which included the construction of a solid waste landfill capping system that was approved by the Ohio EPA based on a risk evaluation.