Site Remediation

Charter Oak strives to achieve remediation goals using the most cost-effective, yet technically sound approach.  Charter Oak is also careful to consider long-term liabilities that may be associated with off-site disposal or treatment.  We have extensive experience in soil and water remediation using both conventional technologies (excavation and disposal, pump and treat) and innovative methods such as bioremediation, on-site thermal treatment and on-site chemical stabilization.  A ground water recovery project managed by Charter Oak in Utah County, Utah involves the extraction and treatment of 2,500 gpm of contaminated ground water.  In Colorado Charter Oak is supervising the remediation of soils and production buildings containing explosive compounds, asbestos, metals and petroleum products, in the context of RCRA Corrective Action.

Charter Oak personnel have performed other substantial remediation projects.  One notable example is the remediation of an abandoned automotive parts manufacturing facility in Connecticut.  This project involved:

  • Removal and disposal of more than ten thousand tons of petroleum and metals contaminated soils;
  • Treatment of soils that were characteristically hazardous for cadmium and lead by means of on-site soil stabilization treatment, which rendered them non-hazardous;
  • Coordination with the purchaser and their environmental consultant regarding potential future uses of the site; and,
  • Public presentation to the local community, with the state DEP, regarding plans for and the progress of remediation.

Mark A. Franson has completed many environmental remediation and RCRA closure projects in Connecticut.  These are two of Mr. Franson’s representative projects:

Mr. Franson was retained to conduct a facility investigation for an aerospace contractor in response to an EPA 3013 order.  Initiated in 1987, the investigation was conducted in three phases involving soil boring and monitoring well construction, geophysical investigations, review of site operational history and the identification of areas of potential environmental concern (AECs).  This investigation resulted in the development of a remedial plan for shallow ground water.  A ground water recovery and treatment system was designed and installed to successfully control a shallow ground water contamination plume and prevent off-site migration.

Mr. Franson designed an in-situ bioremediation system for gasoline constituents in ground water.  The project successfully reduced aromatic hydrocarbon constituents to acceptable levels.  A unique feature of this site was the location of the main body of the ground water plume contaminant plume under a state highway.  System components included ground water withdrawal and treatment, re-injection of ground water amended with hydrogen peroxide as an oxygen source and air stripping of a fraction of the recovered ground water, prior to discharge.