Columbia Energy designed, built, tested, and supported operation of the above grade portion of the SX Porewater Extraction System used for proof-of-principal testing at SX Tank Farm located on the Hanford Site north of Richland, Washington.

The purpose of the Extraction System is to pull water from the vadose zone and remove contaminants before reaching the groundwater. The project required close coordination with other agencies, forming an integrated project team.  The project team included Washington River Protection Solutions, Pacific Northwest National Laboratory, and EnergySolutions.

The Extraction System utilizes a trailer for ease of field deployment. Mounted within the utility trailer is a vacuum system, HVAC for use year-round, UPS, industrial router, Ethernet module to monitor and receive alarm messages, and data logging instrumentation with a cloud-based SCADA design.

Columbia Energy developed the operating procedure for execution of the porewater extraction test. Testing included an entire system mock-up, acceptance test plan, and validation and verification testing. We packaged, delivered, and set up the system at the tank farm test site.


  • Engineering and Design
  • Instrumentation & Controls
  • NQA-1 Oversight
  • Procurement
  • Fabrication
  • Factory Acceptance Testing
  • Supporting Documentation
  • Delivery
  • On-site System Testing

Design Features

  • Controls integrated with the data logger
  • Parallel mass flow meters with automated valve switching to maintain accurate measurement of air flow over wide range
  • HEPA filtered exhaust


  • RAM Industrial Cellular Router
  • Power Over Ethernet (PoE) Splitter
  • EtherTRAK Ethernet I/O Module
  • Nitrate meter
  • Mass flow meter for air flow
  • Pressure transmitters to vacuum lines
  • Low volume sample pump for extracted water recovery


  • U.S. Department of Energy (DOE)
  • Washington River Protection Solutions (WRPS)
  • Office of River Protection (ORP)
  • Pacific Northwest National Laboratory (PNNL)
  • EnergySolutions