Total Environmental Concepts, Inc.
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Setting the Standard in Comprehensive Environmental Solutions

Residential Clients

Private Residence — Haymarket, VA

Project: Residential Property

Services Provided:

  • Petroleum Contaminated Site
  • Remedial Action Plan
  • Site Investigation
  • Contaminant Modeling
  • Remediation System Design

The Virginia Department of Environmental Quality’s required documentation included performance of a Site Characterization Report (SCR), a Corrective Action Plan (CAP), and CAP Implementation. Fourteen monitoring wells were installed over the course of two years to delineate the hydrocarbon plume and investigate the bedrock aquifer characteristics. The investigations revealed a two aquifer system in which the lower aquifer had been impacted. To reduce the risk and provide the two parties with potable water, two replacement supply wells were placed and installed based on the hydrogeological findings from the site. A bioremediation system was designed and installed at the site to mitigate the hydrocarbon impact.

Compton Road Project — Clifton, VA

Project: Residential Remediation System

Services Provided:

  • Petroleum Contaminated Site
  • Remedial Action Plan
  • Site Investigation
  • Contaminant Modeling
  • Remediation System Design

TEC removed leaking heating oil tanks (that had contaminated drinking water supply wells) from two structures in Fairfax County, Virginia. TEC performed state regulatory-driven site characterizations which included performing site, risk and remediation assessments, plus the installation of several monitoring wells into bedrock. Hydrogeologic studies, including the mapping of bedrock outcrops, the performance of extended pump tests helped to determine preferential groundwater flow pathways and migration through the metasiltstone bedrock. A closed-loop remediation system was employed with the withdrawal of free-phase and dissolved-phase hydrocarbons and water. The influent mixture was fed into an oil/water separator then through carbon filtration units to remove the remaining hydrocarbons. The treated water was discharged into a mixing tank, infused with 40 parts per million of dissolved oxygen by ETEC’s BioBox® and re-injected into select wells. The oxygenated water was further augmented with hydrocarbon degrading bacteria, macro-nutrients and bio-surfactants.

Virginia Department of Environmental Quality — Loudoun County, VA

Project: Residential Property

Services Provided:

  • Phase I Assessment
  • Geophysical Investigation
  • Site Investigation
  • Remedial Investigation

A neighborhood supply well in Loudoun County was contaminated with petroleum constituents, however, neither the site nor any of the immediate neighboring properties contained an underground storage tank (UST) to store heating oil or gasoline. TEC was tasked by the VDEQ, under this contract, to investigate potential present and historic sources for this contamination, and to evaluate alternate water supply options. Historic aerial photographs were reviewed at Loudoun County’s GIS department, pollution complaint files were reviewed at the VDEQ, and supply well records were reviewed and copied at the Loudoun County Environmental Health Department. TEC performed a reconnaissance of the site and surrounding areas for nearby supply wells and rock outcrops for collecting measurements of in-place bedrock characteristics. In lieu of further investigation and remediation, TEC and the VDEQ determined that an alternate water supply was the most viable option.

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