ECOH and our experts are members of the following:

  • Environmental Abatement Council of Ontario (EACO)
  • Toronto Construction Association (TCA)
  • Healthy Indoors Partnership (HIP)
  • Occupational Hygiene Association of Ontario (OHAO)
  • Professional Engineers of Ontario (PEO)
  • American Industrial Hygiene Association (AIHA)
  • American Conference of Governmental Industrial Hygienists (ACGIH)

ECOH Principals

Mark Lai

Mark Lai, the President of ECOH, is a gifted visionary and an excellent mentor.  Mark is well known throughout Canada and abroad for his expertise on asbestos and his ability to provide practical solutions to the challenges faced in managing hazardous materials in buildings. Having designed and supervised some of the largest hazardous materials abatement projects in Canada, Mark has a proven track record spanning more than 25 years in environmental consulting.  Mark has personally completed hundreds of detailed assessments and he leads by example with a “hands-on” approach to mentorship.  Mark is a passionate presenter / trainer and he lends corporate oversight and quality control on practically all of ECOH’s hazardous materials projects.  Through the depth and variety of his experience, Mark has fostered long-term business relationships both Nationally and Internationally, resulting in access to countless resources and contacts, ensuring ECOH’s success with projects of practically any magnitude.

Dr. Om Malik, Ph.D, P.Eng., CIH, ROH, FAIHA, QP
CEO & Principal

Om Malik is an internationally recognized expert with more than 25 years’ experience in environmental health and industrial hygiene.  Prior to founding ECOH, he held senior positions with the Ontario Ministry of Labour, where he directed the control of hazardous materials in industries across the province.  An expert in occupational health risk assessment, air quality sampling, and control of asbestos, mould and infectious materials, he has led development of international health and safety conventions as Chair of an International Labour Organization subcommittee representing over 100 countries. A recipient of the Hugh Nelson award for excellence in industrial hygiene, Om is an engaging and sought-after public speaker and expert witness.  He has been an adjunct Professor of Industrial Hygiene at the University of Toronto, has been named a distinguished Fellow of the American Industrial Hygiene Association and is designated a Qualified Person for Risk Assessment (QPRA) by the Ontario Ministry of the Environment.

John Lewis, BA, CET               

John Lewis is a founding principal of ECOH with over 25 years of senior environmental consulting experience.  John is a recognized expert in all phases of Environmental Site Assessments, contaminant hydrogeology, site decommissioning, and computer modelling. He has managed dozens of large-scale environmental remediation and construction projects including site decommissioning, landfill leachate monitoring, hydrogeology, and site-specific risk assessments.  He has been rated as an excellent trainer in the traditional class-room style as well as distance learning.

Senior Management

John P. Kocjan, CRSP, ROH
General Manager

John Kocjan, a Registered Occupational Hygienist (ROH) and a Canadian Registered Safety Professional (CRSP), is a highly experienced manager with an extensive track record directing complex environmental, health and safety projects for clients in the government, construction, industrial and real estate sectors.  His excellence in project management and expertise in Occupational Hygiene, Occupational Health and Safety, Environmental Site Assessments, Indoor Air Quality Investigations and Hazard Assessments make him a valued resource to ECOH clients.  John’s experience includes management of numerous hazardous materials surveys and multi-million dollar, multi-facility mould and asbestos surveys and abatement projects.

Jeff Muir, B.Sc., PGeo (Ltd.), QP ESA
Vice President – Environmental

Jeff is a registered Qualified Person (QPESA) as defined by O.Reg.153/04 (as amended) and is well experienced in applying regulatory requirements for environmental assessments under the Regulation.  He has experience assessing various media for a wide array of contaminants, ranging from petroleum hydrocarbons to chlorinated solvents to emerging contaminants such as perfluorinated alkyl compounds (e.g. PFOS).  The sites he has conducted or supervised assessments on have ranged from residential properties to large scale industrial facilities.  He provides project management and support for ECOH’s risk assessment team and has a strong understanding of the risk assessment process under O. Reg. 153/04 (as amended).  Mr. Muir has provided consulting services and project management to numerous municipal and federal departments.  The projects Jeff has managed have varied from Phase One/Two ESA and quantitative human health and ecological risk assessments to remedial options analysis and specification development.


Steve Barnett, M.Eng., CIH, ROH
Vice President

Steve has over 30 years experience as a client-focused occupational, health and safety consultant. Steve is a recognized expert in the field of occupational hygiene, and is both a Certified Industrial Hygienist and Registered Occupational Hygienist. He has participated in over 5,000 workplace exposure surveys, and has enthusiastically delivered over 1,000 courses and seminars on a variety of OH&S topics. He is active in the hygiene community, is a frequent conference speaker, and has taught occupational hygiene courses at Conestoga College and Mohawk College for over 25 years. Steve has also held a number of senior leadership positions, with responsibilities for business development, technical quality control and strategic planning. He is most proud of his work mentoring and promoting the careers of some of Canada’s top occupational hygienists.

Patricia Cavallari, CHRL
Director, Human Resources

ECOH’s Human Resources Manager, Patricia Cavallari, is a seasoned Human Resources professional with more than 15 years of related experience in the environmental industry. With an educational background including completion of Human Resources Management and Business Administration programs, Patricia is a Certified Human Resources Leader (CHRL), a mark of HR excellence in Canada.  Patricia has also initiated and participated in a number of Corporate Health & Safety and Operational activities and programs.

Marianne Levitsky, MES, CIH, ROH, FAIHA
Senior Industrial Hygiene Associate

Marianne Levitsky has more than 25 years’ experience in occupational health and safety, including leadership at the senior management level with major Ontario public sector organizations.  She has extensive experience in industrial hygiene, research, policy, performance measurement, social marketing, program evaluation, safety culture, and educational programs.  As an ECOH associate, she has conducted numerous audits and risk assessments, and developed and delivered a variety of training programs.  Marianne has been named a distinguished fellow of the American Industrial Hygiene Association and holds an adjunct faculty appointment in the Occupational/Environmental Health and Global Health programs at the University of Toronto.

Zafar Iqbal, B. Eng (Civil)
Operations Manager

Zafar Iqbal has wide experience managing multi-faceted hazardous materials and environmental assessment projects.  He combines technical and analytical skills with the attention to detail, customer service and organizational proficiency that are the hallmarks of an excellent project manager.  With more than 20 years’ international and Canadian experience in environmental sciences, civil engineering and quality control, Zafar has led numerous projects involving designated substance assessments, asbestos, mould and hazardous material abatement.

Brian Edwardson, M.Sc., B.Sc. (Env.)
Operations Manager

Brian has diverse experience and training in hazardous materials and asbestos assessments as well as occupational health and safety.  Brian is currently managing field staff during survey/abatement projects resulting from our ongoing relationships with clients such as Hamilton Health Sciences, CityHousing Hamilton and Revera Living. Specific project experience includes but is not limited to management of the detailed surveying of 58 long-term care facilities for asbestos-containing materials and other designated substances; the overall co-ordination, in-place management and abatement of hazardous materials (lead, asbestos, PCBs, mould, etc.), and selective demolition of mechanical and electrical building systems of a facility with historical significance developed by Brock University.  This project also involved the preparation of specifications as well as the supervision of technicians during surveys and abatement inspections.

Project Team

Rob Lovegrove, CET
Senior Project Manager

Robert has been involved in all aspects of environmental consulting for more than 30 years having worked on projects related to air, earth, and water contamination in many areas across Canada.  Robert has the ability to manage, coordinate, and implement environmental consulting services as well as provide and direct the hands-on services for industrial, commercial, natural resource, and institutional sectors.  Robert has conducted and/or managed projects involving building domestic water system review and completed sampling for Legionella at system extremities in a variety of settings.  He has also conducted and managed indoor air quality (i.e. carbon monoxide, carbon dioxide, temperature, relative humidity) and mould/bacteria assessments within various health care/commercial/industrial facilities.

Ken Reeves, WRT, HVAC Tech
Senior Project Manager

He is a professional Consultant and Project Manager with over 19 years of experience within the Environmental Industry.  Ken has had the opportunity to be a part of several small, medium, and large scale projects throughout Canada, specializing in hazardous materials.  Ken has been a part of industrial plant site decommissioning projects (multiple coal fired power generation facilities, and multiple refineries), and on many occasions has been requested to provide his perspective and recommendations on other complex large scale abatement projects.  He has performed or managed hazardous materials surveys, designed abatement projects as well as performed and managed mould, indoor air quality, and industrial hygiene projects for a wide range of clients across Canada.

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Hassan Ktaech, H.B.A., MCIWM
Senior Project Manager, Hazardous Materials & Building Waste Design

Hassan is an environmental professional with extensive experience providing environmental regulatory compliance, engineering and scientific consultation services to public and private sector clients with vast experience in Canada and the Middle East & North Africa (MENA) region. His range of professional experience and services include project management, designated substance and hazardous materials services, waste management design and audit, corporate environmental regulatory compliance consulting, environmental monitoring, government approvals, protocol development and scientific methodology validation. In his current role, Hassan supports and leads several designated substance and hazardous material assignments, and in addition, will be developing a new service-line that focuses on waste management strategies for a range of new construction and existing building applications. His most valued project was leading his team in the delivery of a fully integrated waste management system for a 14 km2 education and research compound identified as Education City located in Doha, Qatar. In 2013, Hassan attained his Chartered Waste Manager qualifications with the Chartered Institution of Wastes Management, a pre-eminent European based institution for resources and waste management.

Rob Fernandes, BSc, CIH
Manager, IAQ, Mould and Microbial Contamination

Rob Fernandes is a skilled industrial hygienist who has supervised numerous hazardous materials surveys and abatement projects for a range of residential, industrial, institutional and government sector clients.  The many projects Rob has undertaken include indoor air quality assessments, design and supervision of fumehood (perchlorate) removal, confined space assessments and programs, training programs, heat stress assessments, hospital infection control and contamination assessments, and major asbestos assessment and abatement operations.  Rob has extensive knowledge of microbiology and is a widely-sought expert on mould.  He has designed and delivered training programs on mould control, and managed numerous multi-facility mould assessment and abatement projects.

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Tracey-Ann Bullock, B.Sc., EP
Senior Project Manager

Tracey-Ann Bullock is a well-organized, technically versed project manager practicing a wide-range of environmental activities in both the public and private sector.   Her project experience extends to managing and conducting Phase One ESAs, Phase Two ESAs, and soil and ground water remediation programs in preparation for the filing of Records of Site Condition (RSCs). She has comprehensive knowledge with underground storage tank (UST) decommissioning, long term ground water and landfill monitoring programs, petroleum hydrocarbon (PHC) landfarming programs, pre-demolition hazardous materials surveys (i.e. asbestos, lead and polychlorinated biphenyls (PCBs), and hazardous materials abatement.  Tracey-Ann has experience working in accordance with numerous provincial and federal regulations, initiating her career by decommissioning inactive Distant Early Warning (DEW) Line sites in Nunavut for the Department of National Defence, and subsequently moving to the private sector where her focus has been conducting ESAs and remedial activities across Canada.

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Steve March, OH&S, AMRT, WRT
Senior Project Manager

Steve has been working extensively in the occupational health and safety (OHS) and environmental health & safety (EHS) industry for over 17 years, providing inspection and testing services for a wide variety of client groups including commercial, multi-residential, retail, hospitals, school boards, universities, colleges, industrial plants, financial institutions, property managers and general contractors.  Steve manages projects over a wide range of OHS/EHS service lines and is responsible for overseeing field staff and activities regarding the investigation, reporting and management of environmental risk factors prior to and during construction related activities.  Steve prepares scopes of work, tender documents, contractor bid submissions, project assessment and closeout documentation and provides recommendations for applicable standards, guidelines and regulations. 

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Chris Turner, B.E.S.
Senior Project Manager

With over ten years of relevant experience, Chris Turner has been working extensively in the Occupational Health and Safety and Hazardous Materials fields of work. Initially employed by ECOH as an Environmental Scientist, Chris has personally completed hundreds of Hazardous Materials and Designated Substance assessment and/or abatement projects for ECOH’s clients. Chris’ natural abilities to work with others, handle pressure situations, communicate clearly with others, and fully understand the needs and expectations of his clients lead him to his current role as a Project Manager involved in the coordination and management of a wide variety of multi-faceted asbestos, mould, and lead assessment and abatement projects.




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Christopher Williams, B. Sc., P.Geo. (Ltd.)
Project Manager

Christopher Williams is a highly motivated, results-driven professional with over fourteen years of industry experience covering a wide range of environmental, geological and geotechnical activities throughout Canada and the United Kingdom. His projects involve detailed phased environmental site assessments, evaluation of remedial/risk management (RRMs) options, regulatory compliance and site closures, among other services. As a field practitioner Christopher is experienced in project supervision, including drilling, coring and test pitting, with logging for both environmental and geotechnical objectives. Christopher also has extensive experience managing and conducting Phase I and Phase II Environmental Site Assessments to both CSA and MOE Standards, geotechnical investigations and remediation for due diligence, financing and regulatory requirements.  Christopher is also familiar with process for filing Records of Site Condition (RSC) in accordance with O. Reg. 153/04, as amended and has extensive experience in the development and implementation of traffic management plans and/or traffic protection plans in accordance with Ontario Traffic Manual (OTM) Book 7.


For further information, email or call us at
905.795.2800 or toll free at 1.866.231.6855