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Contaminated sites and historic environmental management practices can pose significant risk to human health and the environment, and carry significant clean up liabilities for industry and government. Many older industrial sites have had a history of varied uses resulting in multiple sources and types of contamination in soil, sediment, groundwater, and surface water. Site remediation typically involves remedy selection, design, implementation, and operation and maintenance.

Cox-Colvin’s specialty is the planning, negotiation, and implementation of large and/or complex environmental projects. Most of our projects are highly regulated RCRA or Superfund sites, or subject to consent orders with U.S. EPA or state environmental agencies. Our work is routinely scrutinized by those agencies and concerned citizens, and requires the highest level of quality control. As a result, we have developed robust sampling, analysis, remediation, and project implementation processes.

At Cox-Colvin, we engage with our clients to identify their remediation goals and objectives for their site within the context of the regulatory setting. And we work together to weigh options, develop strategies, and take actions based on our mutual understanding of the regulatory requirements, site and subsurface conditions, and short and long-term goals. We focus the remedial alternatives evaluation on realistic remedies while tailoring the use of innovative technologies for characterization and remediation. In many cases, the preferred remedial approach becomes readily apparent during the site characterization allowing the environmental evaluation to remain highly focused. A site-specific exit strategy is incorporated into each remedy. We routinely incorporate green and sustainable remediation (GSR) principles and practices into remediation projects and we have contributed to the advancement of the GSR. Following remedial implementation, Cox-Colvin closely monitors the performance of every remedy against pre-established goals to identify potential optimization and cost-saving strategies.

Remediation services provided by Cox-Colvin & Associates include the following:

  • Corrective measures studies (CMS) and implementation (CMI) under the RCRA Corrective Action program
  • Feasibility studies (FS), Remedial Design/Remedial Action (RD/RA) under the CERCLA program
  • RCRA closure
  • Remedial design and construction management
  • In-situ remediation, including bioremediation, chemical oxidations, phytoremediation, permeable reactive barriers, and thermal remediation
  • Physical containment design and implementation
  • Vapor mitigation
  • Operation and maintenance and remedial systems optimization
  • Third party review
  • Green and sustainable remediation (GSR)