Technical Professionals

Mr. Mark A. Lehar, P.Geo.

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Leading Bifröst as the General Manager is Mr. Mark A. Lehar, a licensed Professional Geoscientist in the Provinces of Alberta and Saskatchewan, as well as a Certified Professional Geologist in the State of Indiana, who has over 30 years of professional environmental experience and technical proficiency in all manner of environmental soil and groundwater site investigations.   


Mr. Lehar can explain the intricacies of the environmental regulations to you and explain to you in layman's terms, exactly what they mean to you, and what will be required of you under the regulations.  He can take those complex environmental issues you find yourself having to deal with and can provide you with a path to a common-sense environmental solution, to bring you back to Earth.

His body of professional, public works has included projects with: Alberta Environment and Parks (AEP), The City of Calgary, the City of Edmonton, Alberta Transportation (AT), Alberta Infrastructure (AI), and the Towns of High River and Okotoks, among others, within Canada.  

It has also included projects in the United States of America working with the US Environmental Protection Agency (USEPA) Superfund Program, the US Army Corps of Engineers (USACE), the US Air Force (USAF), the US Department of Energy (USDOE), the State of Ohio EPA, the City of Columbus, and the Ohio State University, among others.   

He has also worked with numerous attorneys, banks, developers, financial institutions, insurance companies, oil and gas, and various commercial and industrial business Clients in both countries.      

Project types have consisted of: Brownfields; military bases and facilities; former missile bases; DOE nuclear facilities; USEPA Superfund Sites; other government facilities; downstream petroleum retail facilities; bulk petroleum plants; petroleum distribution facilities; chemical plants; various industrial manufacturing facilities; automotive and truck manufacturing plants; automotive and truck repair facilities; metal plating operations; dry cleaners; power plants; lead smelters; radioactive tailings dumps; cement manufacturing plants; quarries; abandoned landfills; abandoned chemical release dump sites; schools; airports; cell tower sites; large undeveloped tracks; commercial real estate; warehousing facilities; and, greenfield sites.      He has completed or provided technical expertise on over a thousand projects, including: various Phase I, II, and III environmental site assessments; risk assessments; remedial action plans; remedial management plans; UST closures; remediation using various technologies; confirmation documentation; annual monitoring reports; aquatic pathway assessments; asbestos surveys and abatement oversight; bioremediation facility installation; air, solid waste, and storm water permitting; explosive gas planning, permitting and monitoring; litigation support; delineation and permitting of wetlands and other jurisdictional waters; radon measurement; lead-based paint surveys, mold surveys and mitigation; storm water pollution prevention plans; hazardous materials surveys; and, other environmental and remediation activities.  

We do apologize, but Mr. Lehar is not on a first name basis with any of the Valkyries.