MARGARET GUIDARELLI CIH, ROH, MSEE
Owner & Co-Founder

Margaret Guidarelli CIH, ROH, MSEE
Owner & Co-Founder
Margaret founded Hygieneering in 1987 after working in the petroleum, oil and gas industry for eight years and obtaining her Masters of Science Degree in Environmental Engineering from IIT in Chicago. She earned a Bachelor of Science degree from Illinois State University (ISU) in Environmental Health with a minor in Biology. She also earned the credentials of Certified Industrial Hygienist (CIH) from the American Board of Industrial Hygiene and Registered Occupational Hygienist (ROH) from the Canadian Registration Board of Occupational Hygiene.
Margaret remains active in the firm’s operations to ensure the highest caliber Environmental Health and Safety (EHS) services are delivered to Hygieneering’s clients in the manufacturing, healthcare, energy, academic, real estate and construction sectors.
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