Soil And Groundwater Remediation

Manual removal (“dig and dump”) of petroleum impacts is often the most efficient and timely remediation option.  Site conditions may dictate the need for a mobile groundwater treatment unit (MTU) to treat dissolved concentrations for dewatering an excavation or a containment of a dissolved plume.

Alternatively, in-situ remedies such as chemical oxidation (ISCO) offers a less disruptive option where obstacles such as an existing structure or significant depth of soil inhibit more conventional remedial methods.

Concord Engineering holds Environmental Compliance Approvals for Mobile Groundwater Treatment and In-Situ Remediation of petroleum hydrocarbons.  We are also a Licenced Well Contractor.


Environmental Compliance Approval Mobile Water Treatment Unit (MTU)

Our ECA #5741-9V5HUB permits the operation of ten (10) MTU system for treating petroleum hydrocarbons in the Province of Ontario.  The system is designed to run 24 hrs, 7 days a week, in all weather conditions, performing its functions with regular monitoring/maintenance by our trained personnel, and with minimal supervision.   All maintenance and monitoring is performed in accordance with our ECA, which includes notification to the local MOE office and neighbouring properties.  MTU’s are deployed for the purposes of groundwater treatment, containment, and dewatering excavations, operating for anywhere between 30 days and 2 years, with 2 to 4 months being the average.

The primary components of the P&T System include an above ground storage tank, sediment filters, pressure gauges, flow meters, treatment media, sample ports, controls and instrumentation all housed in a secured mobile trailer or a suitable site building.

Concord Engineering offers liaison with municipalities for the discharge of treated water, and where needed, design and construction of erosion control and waste water discharge.

Environmental Compliance Approval: Mobile In-Situ Remediation – Biostimulation Compounds

In-situ remediation technologies are considered where obstacles (existing structure or significant depth below grade) or challenging geological settings (fractured bedrock regimes) inhibit more conventional remedial methods (excavation). 

Concord Engineering’s Certificate of Approval (Air #0158-7G8GW6) for in-situ treatment systems is designed to treat soil and/or groundwater contaminated with petroleum hydrocarbons (PHCs) in the Province of Ontario. 

In-situ injection methodologies involve the introduction of a treatment media into the contaminant zone as a means of treating and/or destroying contaminants of concern in place, or “in-situ”, in the ground.

Each site is unique in location, geological setting, hydrogeological setting, contaminant mass, and seasonal variations and thereby requires a site specific in-situ remediation program.  Effective in-situ remediation relies on the close contact between the bio-stimulant and the contaminant mass in the soil/bedrock, ensuring the injected agent(s) are distributed into discrete horizons and allowing for saturation of the impacted soils/bedrock. 

The primary components include a bio-stimulant compound, an injection infrastructure (closely spaced horizontal or vertical injection wells and/or galleries) and the appropriate injection instrumentation (meters, pumps, controls).  Components of the continuous system are housed in a secured mobile trailer or in a suitable site building, and all maintenance and monitoring is performed by trained in-house personnel.

A monitoring program is also required to fulfill the monitoring requirements of our CofA in assessing the in-situ remediation progress, to monitor the remediation progress, to ensure containment of the remedial agent and is ultimately be used to verify when treatment goals have been reached.   Although an exact timeframe for completion cannot be pre-determined, a fairly aggressive program often achieves the SCS in a six (6) month treatment period.

MOE Licenced Well Contractor/Technicians

Concord Engineering o/u 1112185 Ontario Inc. is a Licenced Well Contractor in the Province of Ontario (#7239).

Our specialties and expertise as licenced Class 3, 4 and 5 Well Technicians under O. Reg. 903- Wells are in the areas of:

  • Well inspection, disinfection
  • Installation of equipment to monitor, sample or test
  • Test Hole (Monitor Well) and Dewatering Well (Recovery Well) design, installation, instrumentation (drill/bore); Well Tagging
  • Hydrogeological Assessments (D-55)/ Pumping Tests (test holes, dewatering wells, supply wells)
  • Installation of pumps for purposes other than sampling
  • Completion and submission of Well Records
  • Well abandonment (test holes, dewatering wells, supply wells)
  • Well Tagging
Monitoring Well Design, Installation, Instrumentation and Abandonment

Our mobile Monitor Well Abandonment Rig is ideal for those hard to reach places where mechanical equipment just can’t fit or where minimal damage to landscaping is desired.

“Thank you very much to the fast turn-around!”


Contact Us

Concord Engineering

755 Baker Crescent
Kingston, Ontario K7M 6P5

(613) 634-4357