Active Gas Plant On and Off-site Remediation & Reclamation

Project Name:

Active Gas Plant On and Off-site Remediation & Reclamation


Eastern Alberta


Apache Canada Ltd.


Oil & Gas


Environmental Site Assessment



Solstice designed and managed the environmental site assessments (ESAs), remediation, and reclamation activities at an active gas plant in eastern Alberta for Apache Canada Ltd. (Apache). The site involved complex ground disturbance activities, both on and off-site remediation, and a sensitive landowner that brought regulatory attention to the project.

Project Requirements:

Solstice was retained by Apache to conduct a Phase I and a Phase II ESA on a gas plant in eastern Alberta.  The results of the ESA identified benzene, toluene, ethylbenzene, and xylenes (BTEX) and light-end (F1) hydrocarbon levels in excess of applicable soil guidelines both on and off-site.  The off-lease impacts covered an area of approximately 1 hectare, and the depth of impacts ranged from 1.5 to 9 m below ground surface.  Impacted soil was excavated and successfully remediated within the temporary workspace associated with the facility using soil amendments and twister units. In total, ~45,000 m3 of impacted soil was remediated and returned to the excavation, and 26,000 m3 of clean overburden was managed and replaced. The site was recontoured and reclaimed with the use of silt fencing and tackifiers to assist with erosion control.

Solstice Deliverables:

  •          Phase I and II ESA reports
  •          Remediation plan and site management during remediation activities
  •          Landowner liaison
  •          Regulatory liaison for reclamation activities
  •          Reclamation plan and site management during reclamation activities
  •          On-going reclamation monitoring activities

Project Manager and Lead Assessor

Renate Andersen, B.Sc., P.Ag.

Michelle Cotton, BSc, PAg

President / Sr. Environmental Scientist

Solstice Canada Corp.

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