Skip to main content
Innovative Combined and Emerging Remedial Technologies
Logo Antea Group - No text - Angled - Transparent

Innovative Combined and Emerging Remedial Technologies

Do you have any questions?

Innovative Combined and Emerging Remedial Technologies

Challenge

The challenge before Antea Group was to install a remedial system at a client’s petroleum terminal facility. A subsurface investigation had previously defined the extent of petroleum hydrocarbons present. Investigative tasks included a drilling program consisting of soil boring and monitoring well installations, a soil and groundwater sampling program, and the evaluation of historical site data.

Antea Group assumed responsibility for the maintenance and monitoring of a monitoring well network. It also installed an interim remedial action system consisting of four recovery wells with pneumatic pumps, a free product or water separation system, and an air stripper. Free product was removed from off-site wells using passive skimmer units as an additional interim measure.

Solution

Antea Group decided that a bioremediation feasibility study was needed to evaluate the potential for biodegradation as a remediation alternative. Based on this study, a future course of action would be mapped out. The study served the following purposes:

  • Examined various organic and inorganic parameters in groundwater and identified factors potentially limiting biodegradation activity for Antea Group’s client
  • Evaluated options for remediating soil and groundwater
  • Identified those portions of the site where biodegradation processes passively controlled the rate of contaminant migration
  • Revealed an area requiring active remediation efforts to control the rate of free and dissolved phase product migration

Result

Based on the bioremediation feasibility study results, Antea Group prepared a corrective action plan. Plan elements were as follows:

  • Incorporation of a remediation design based on the extent of contamination, performance of the interim remedial action system, and results of an exposure to pathways analysis and biofeasibility study
  • Installation of a groundwater interceptor trench at the downgradient property boundary. The trench was designed to prevent additional off-site migration of dissolved and free phase petroleum hydrocarbons
  • Extraction and transfer of water to a separator tank designed to retain free phase petroleum hydrocarbons. Water then passed through a diffused aeration tank prior to discharging to the local sanitary sewer

Future project activities will include evaluating existing treatment system performance with respect to off-site petroleum hydrocarbons, along with developing a plan for addressing vadose zone hydrocarbons on-site.

Related Services

Have any questions?

Contact us to discuss your environment, health, safety, and sustainability needs today.

This website uses cookies

Select the type of cookies you want to accept

More information