In Northeast British Columbia, approximately 10,000 oil and gas wells have become inactive for economical or technological reasons creating significant environmental liability for oil and gas producers. A large producer in the region retained Matrix to manage an area-based portfolio of inactive well sites and progress the sites from their current status through site screening, site investigation, remediation, Certificate of Restoration (COR) Part 1 application, forested and agricultural land restoration, post reclamation assessments, and COR Part 2 application. Matrix works on approximately 150 sites/year within this portfolio.