DTC is one of three firms currently providing on-call technical environmental consulting services directly for the Connecticut Department of Transportation, Division of Environmental Compliance.

The services are provided to investigate and mitigate soil and groundwater contamination that may impact Connecticut Department of Transportation construction projects throughout the state. The work also includes environmental investigations and environmental compliance monitoring at various Connecticut Department of Transportation road maintenance and salt storage facilities. The construction projects to date have involved roadway improvement projects as well as bus and rail transportation facilities and environmental inspection at active construction projects.

Since DTC’s work began in the summer of 2004, we have provided services at approximately 60 projects and/or sites, and received assignments for work with fees to date of approximately $1.5 million.

The environmental consulting services for a typical transportation construction project begin with a Corridor Land Use Evaluation, which determine the relative risk that the project activities may encounter soil and groundwater contaminants, and Preliminary Site Evaluations of parcels that may need to be acquired as part of the project. The work then proceeds to a Subsurface Site Investigation and Report that include the collection and review of soil and groundwater samples and other data in order to determine the specific Areas of Environmental Concern, sources, pathways and sensitive receptors, and develop recommendations.

As the project proceeds into the design phase, DTC develops environmental specifications, detailed plans and estimates for incorporation into the project bid documents. During project construction, DTC provides construction inspection, monitoring, management, and compliance surveillance services to provide technical support and ensure Contractor compliance with the plans and specifications when working in areas of environmental concern or managing contaminated materials associated with the project.