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Our Team

Learn About Our Team

With a team composed of experienced engineers and environmental scientists, ASC Environmental will be able to bring professional, creative and unique solutions to all problems encountered.

Paul Johnston, M.Sc, P.Eng, QPESA


Paul is our senior engineer and president. He has over 25 years of engineering design, construction, and consulting experience, with particular emphasis on environmental site assessments, designated substances surveys, environmental remediation and decommissioning, hydrogeological assessments, solid waste management, and regulatory compliance issues.

Paul is licensed with Professional Engineers Ontario and Engineers Nova Scotia.


Queen's University, Kingston, Ontario 1991

Master of Science, Civil Engineering

Queen's University, Kingston Ontario, 1989

Bachelor of Applied Science, Geological Engineering (Geo-technical Option)

Mount Allison University, Sackville, New Brunswick, 1986

Bachelor of Science, Geology. Certificate of Engineering

Ashley Hosier, P.Eng

Project Manager

Ashley is our intermediate engineer with experience planning and conducting environmental site assessments, environmental remediation, solid waste management, designated substance surveys, hydrogeological assessments, air quality monitoring, and environmental compliance approvals.

Ashley is licensed with Professional Engineers Ontario and Engineers Nova Scotia.


Dalhousie University, Halifax, Nova Scotia, 2011

Bachelor of Engineering, Environmental Engineering

Thomas Asma, B.ASc

Engineer In Training

Thomas is an engineer in training with over 3 years of field and report writing experience in construction and environmental consulting. He has experience planning and conducting environmental site assessments (Phase I and Phase II ESAs), designated substance reviews, hydrogeological assessments, contaminant evaluation and delineation, and preparing records of site condition. Thomas also has experience in reinforced concrete bridge and box culvert construction and rehabilitation.


Queen's University, Kingston, Ontario, 2019

Bachelor of Applied Science, Civil Engineering

Tanner Cook, B.A

Environmental Technician


University of North Carolina, Chapel Hill, NC, 2021

Bachelor of Arts, Environmental Studies and Geography

Brandon Gordon-Lalonde, B.A, M.A Candidate

Environmental Scientist


Queen's University, Kingston, Ontario, 2023

Masters Candidate, Classics and Archaeological Studies


Brock University, St. Catharines, Ontario, 2019

Bachelor of Arts (Hons.), History and Classical Studies

Joshua Bell, B.Sc, M.BEMA

Environmental Biologist


Trent University, Peterborough, Ontario, 2019-2020

Masters of Bioenvironmental Monitoring and Assessment

Trent University, Peterborough, Ontario, 2015-2019

Bachelor of Science (Hons.), Biology

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