Pitt-Consol Site Remediation
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Project Objective

The site of this 36-acre property is a former coal tar processing facility that manufactured road tars, cresols, phenols, and cresylic acid with operations starting in the late 1800’s to 1983. Project objectives include the completion on-site soil remediation and the implementation of a long-term groundwater remediation strategy within regulatory timeframes for the site.

Geosyntec’s Scope of Services

The owner retained Geosyntec to develop and implement a soil and groundwater remediation program in support of the sale and development of the property site. Primary elements of the remediation of soils include the in-situ treatment of free product, excavation and off-site disposal of soils containing PCBs under an EPA Self-Implementing Plan, excavation and disposal of buried drums of waste, and the coordination of the construction a site-wide cap with the developer. The remedy for groundwater includes source removal and treatment and monitored natural attenuation remedy for groundwater. Three phases of pilot testing the Self-Sustaining Treatment for Active Remediation (STAR) Technology were completed to assess this technology to treat the coal tar waste that is present in the subsurface at the site as an alternative to excavation and off-site disposal. Full-scale operations resulted in the destruction of over 150,000 lbs. of coal tar. Remedy verification was performed in each treatment area and included both sample analysis and TarGOST™ investigation. The work was performed with over 200,000 safe work hours logged over the project.

A detailed remedial investigation of the site was completed, which employed laser induced fluorescence profiling (TarGOST®) technology, sonic coring and subsampling, and test pits to quantify the volume and mass of coal tar waste across the site. The final treatment areas have been guided by a 3D delineation model of the site. A Remedial Action Work Plan, which addresses treatment of the free product zones using STAR technology, targeted excavation and a site-wide cap has been approved for implementation at this site to reach remedial objectives. Geosyntec provided contracting, procurement, construction management, and operations management services and managed the requirements of an air emissions permit and a perimeter air monitoring plan.

Development of the site for future logistics use is being performed by another party, but that work is being coordinated with the site owner to ensure regulatory requirements are met. To meet requirements of development in a flood hazard area, more than 400,000 cubic yards of alternative fill has been imported to the site under a New Jersey Department of Environmental Protection (NJDEP) approved Fill Use Plan. Geosyntec reviewed and approved individual lots of fill for use at the site under the requirements of the plan. Groundwater remediation will proceed following the completion of the cap. This site is regulated under New Jersey’s Licensed Site Remediation Professional (LSRP) program, which allows qualified individuals the responsibility for oversight of environmental investigation and cleanup.

Notable Accomplishments

Successful implementation of the STAR technology saved millions of dollars in excavation and off-site disposal costs. High resolution site characterization led to the development of a 3D conceptual model, which also incorporates significant historical soil characterization data, to visualize and quantify the extent of coal tar impacts across the Site. Our over 200,000 hours of safe work have resulted in the successful remediation of the site.

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Project Summary

  • Location: Newark, New Jersey
  • Client: Confidential Chemical Company
  • Project Practice Areas: Contaminated Sites
  • Type of Facility: Processing Facility
  • Services Provided: Innovative Technology Application, Remedial Investigation and Action, Remediation System Design & Permitting, High Resolution Site Characterization, Conceptual Site Model Development, Groundwater Modeling, LSRP Site Regulatory Management
  • Type of Work: Modeling & Remediation
  • Governing Regulation: State and Local