Remediation Systems (Air, Soil and Groundwater)

When a property has been affected by contamination, it may be necessary to pursue remedial efforts to correct the issue. Seneca Companies’ experienced team of OSHA trained engineers, tradesmen, site supervisors and project managers can design, install, build and operate domestic or international remediation systems to help remove any subsurface contamination a property may contain. We are proud to provide custom solutions to solve any number of remedial challenges our clients may be facing. Our remediation systems are built for a wide range of applications including the commercial, industrial, government and environmental sectors.

Seneca has a Remediation and Process Control Shop - an Underwriter’s Laboratory (UL) listed facility. We have provided over 2,000 turnkey packaged systems to clients throughout the world. All control panels are custom built by licensed master and journeyman electricians. Each system is fully tested prior to delivery. Seneca understands complex electrical codes including Class I, Division 1 and 2, Hazardous Locations. The safety of both the public and our client’s employees is top priority.

Seneca’s unique, central location allows for easy shipping of a system. Upon completion of approved CAD drawings, our systems can typically be delivered between eight to ten weeks. Rental and leasing options for systems are available.

Contaminates we can remediate include:

  • Free phase product.
  • DNAPL (Dense Nonaqueous Phase Liquids) such as dissolved chlorinated solvents included PCE (perchloroethylene or PERC) and TCE (Tetrachloroethylene).
  • LNAPL (Light Nonaqueous Phase Liquids) such as dissolved gasoline constituents including benzene, BTEX (benzene, toluene, ethylbenze and xylenes), MTBE (methyl tertiary butyl ether) and diesel.
  • Jet fuel and diesel fuel.
  • Motor oils and lubricants.
  • Nitrates and other nutrients.
  • Dissolved metals.

Custom systems options include:


  • Air cooled heat exchangers.
  • Air pollution control Granular Activated Carbon (GAC) and vessels.
  • Internal Combustion Engine (ICE) units.
  • Thermal and catalytic oxidizers.


  • Biodegredation (landfarming or land application).
  • Bioremediation.
  • Chemical injection.
  • Soil Vapor Extraction (SVE).
  • Soil venting.
  • Sub-slab negative pressure units.
  • Vacuum extraction.
  • Vapor carbon adsorbers.
  • Vapor liquid separators.
  • Vapor treatment.


  • Air Sparge (AS).
  • Air strippers.
  • Bag, cartridge and sand filters.
  • Cyclonic condensate tanks.
  • Dual-Phase Extraction (DPE).
  • “EQ” tanks – settling, equalization and batch processing.
  • Free product skimming and recovery.
  • Granular Activated Carbon (GAC) and vessels.
  • Groundwater recovery.
  • Liquid treatment.
  • Multi-Phase Extraction (MPE).
  • Pneumatic extraction pumps.
  • Product storage tanks.
  • Oil/Water separators.
  • Submersible pumps.





Contact Us

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Case Studies

Remediation Systems Flyer

Multi-Phase Extraction Remediation System Diagram