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REMEDIATION

EJC personnel have performed assessments, remedial investigations and feasibility studies (RI/FS) at both operating and inactive hazardous waste sites across the United States. Corrective action programs are prepared in accordance with local, state and federal regulatory requirements.

The process of performing assessments, remedial investigations and feasibility studies provides the data and methodology necessary for selecting the most cost-effective cleanup design for sites contaminated with hazardous materials and waste.

Examples of our applied expertise are:

  • EJC personnel designed, installed, and managed the operation of a Dual Phase Soil Vapor Extraction / Groundwater Pump and Treat System in Southeast Missouri. EJC has been responsible for every phase of work at this Southeast Missouri site where several service stations had operated between 1952 and 1989, when the property was converted to a retail strip mall. When tenants and patrons of the strip mall complained of headaches and the strong smell of gasoline, owners contacted EJC. Investigation identified multiple plumes of petroleum hydrocarbons. A soil vapor extraction (SVE) pilot test was conducted and the remediation system was designed based on data collected. This site has received a Letter of Closure from the State of Missouri Department of Natural Resources (MDNR).
  • CEC has conducted numerous underground storage tank (UST) site investigations and closures over the past 7 years.
  • A Fortune 100 company requested assistance in closing two tanks with combined storage capacity of 110,000 gallons. The tanks were 12 feet in diameter and 60 feet long, necesssitating the use of special drilling, shoring, dewatering, excavating, and tank removal procedures.

  • Completion of an RI/FS at a multi-PRP Superfund site for a major electronics/microchip company; included the use of surface geophysics, in-situ soil gas analyses, a drilling program, groundwater sampling and site diagram analyses.
  • EJC personnel designed, installed, and managed the operation of the first successful demonstration of an innovative multi-phase remedial technology at a site in Southern California.
  • Preparation of feasibility studies that included pilot testing remedial alternatives, including standard and innovative alternatives, such as ultraviolet radiation and bioremediation.
  • Remediation of Petroleum Hydrocarbon Contamination in Soil and Groundwater
  • Reviewed existing plans and designed alternatives for an effective groundwater barrier to protect a small community from a Superfund site.
  • Solvent Plume Delineation



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