Groundwater Extraction & Free Product Recovery System O&M - Indianapolis, IN


Since 2003, EFS has been retained to perform operation and maintenance of the Groundwater Extraction and Free Product Recovery System associated with the Voluntary Remedial Program (VRP) for a site located in downtown Indianapolis.

The project was performed under the VRP program and a Voluntary Remediation Agreement (VRA) executed between the Owner and the Indiana Department of Environmental Management (IDEM). EFS has been retained to operate and maintain the groundwater remediation systems; collect process and discharge compliance samples; collect LNAPL and water level data; perform preventative maintenance cleaning on treatment system components; and conduct custodial and site security activities.  In addition, EFS has been retained on multiple occasions to install additional monitoring wells and complete civil, mechanical and electrical upgrades to expand the treatment well network.

The scope of services provided by EFS included:

  • Operation and maintenance of groundwater extraction and free product recovery systems.
  • Responding to alarms and/or outages 24 hours per day, 7 days per week.
  • Performing troubleshooting and providing corrective action and preventative maintenance of system equipment.
  • Conduct cleaning of oil/water separator and air stripper as needed.
  • Collecting semi-annual compliance samples.
  • Collecting monthly LNAPL levels water levels from monitoring and extraction wells.
  • Submitting monthly reports/logs.
  • Coordinating off-site disposal of all process-derived wastes.
  • Perform various site maintenance activities, including bi-weekly mowing events and clearing/grubbing of excess vegetation.  Also maintain security fencing, gates, and signage.
  • Assist with various repairs to site utilities, such as confined space entry of a water main vault and perform repair of broken water supply utility.
  • Perform quarterly water level gauging and low-flow groundwater monitoring activities associated with a monitoring well network of 55 wells. 

All work activities to date have been performed in strict accordance with the Occupational Safety and Health Administration (OSHA) and Indiana Department of Environmental Management (IDEM) regulations.