Personnel – Consulting Services

Hal has over 40 years of experience in engineering and in management of environmental projects and programs in industry, government, and consulting. He has a B.A. degree in physics and an M.S. degree in environmental studies.  Hal joined Bison in 1987. Hal retired from Bison in 2014 and now serves as a professional consultant on special projects. Hal has been the project manager for many PSD and NSR permit applications for power generation stations, the lime manufacturing industry, petroleum refineries, a coal-liquefaction facility, compressor stations, wood products facilities, and many other industries. As a project manager, he

Diane is a licensed professional engineer with a B.S. in Civil Engineering from Stanford University and an M.S. in Environmental Engineering from Montana Tech. She started her air quality consulting career at Bison Engineering in 1991. From 1996 through 2016, she worked as an independent air quality consultant while focusing on raising her family. Diane also worked at Montana DEQ for two years as an air quality modeling specialist. Diane rejoined Bison Engineering in 2016. Diane has a great deal of experience in air quality permitting and compliance support for wood products clients in Idaho, Washington, Oregon

Certifications: SWPPP administrator Master Gardener Emergency Response First Aid (CPR/AED) Jennifer joined Bison in October 2018 in the consulting services group in Helena. She has more than ten years of regulatory compliance experience with focuses in permitting, compliance, oil and gas inspection, National Environmental Policy Act (NEPA) document preparation, Spill Prevention Control and Countermeasure (SPCC) plans, and Phase I Environmental Site Assessments (Phase I ESA). She has worked alongside numerous tribal, federal, state, county and local agencies in the Midwest. Jennifer brings a broad expanse of experience to Bison with her previous work relating to oil and

Kellen joined Bison in 2015. He has a Bachelors of Science degree in Biology from Beloit College and is an environmental scientist in the Helena office. Kellen has 10 years of experience as a source tester and environmental chemist. As a project manager for the consulting team, Kellen provides air permitting and compliance support for a variety of industries to complete challenging air quality projects and reduce emissions. He prepares permit applications such as pre-construction, Title V operating permits, and registrations for a variety of industries. He works with clients to ensure they are operating in compliance