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A2LA – Accredited Air Emissions Testing Body

Our goal is to provide the highest quality environmental services which key on communication with your facility and the regulatory agencies involved. Bison is recognized as an accredited air emissions testing body (AETB) through the American Association for Laboratory Accreditation (A2LA). We are certified as an accredited air emissions testing body to ASTM D7036-04, “Standard Practice for Competence of Air Emission Testing Bodies".

A2LA – Accredited Air Emissions Testing Body2019-10-29T15:59:54-06:00

Christopher P. Hiltunen, P.E. President

Certifications: Professional Engineer MSHA/OSHA Safety Trained Chris joined Bison in 1995 and is currently the Helena Branch Manager. Chris obtained a Bachelor of Science degree in Mechanical Engineering from The University of New Hampshire. He is a registered Professional Engineer in Montana. His duties involve project management and oversight of ambient monitoring, source testing, and permitting/compliance activities. Chris’s past duties included ambient air and meteorological data collection, quality assurance, processing and reporting on a variety of ambient monitoring systems, including PM10, PM2.5, SO2, CO, NOx, O3, and meteorology installations as well as continuous emissions monitoring systems. He

Christopher P. Hiltunen, P.E. President2019-01-11T14:33:13-07:00

Zach Harding, QSTI Director of Source Testing Services

Zach joined the Source Testing group at Bison in 2017. He obtained a Bachelor of Arts in Business Administration with concentrations in Management and Marketing from Carroll College. Zach has three years of experience as a project manager and is certified by the Source Evaluation Society as a Qualified Individual in the performance of source testing. Zach is the director of the source testing services. He performs air emissions testing in accordance with EPA methods for both compliance and engineering purposes for a variety clients. He has led projects in Title V compliance testing, Boiler MACT, PC-MACT,

Zach Harding, QSTI Director of Source Testing Services2021-02-04T14:46:13-07:00

Robert J. Drake, CPA, Chief Financial Officer

Certifications: Bob re-joined Bison in 2020 as the Chief Financial Officer. Bob oversees all of the financial aspects of the company and is a part of the company management team. He prepares financial statements, analytical reports, budgets, and other reports related to the 401(k) plan and the Bison ESOP Trust. In addition, he acts as Human Resources Director and leads the administrative team. He also acts as an advisor to the Bison Board of Directors. Bob originally joined Bison in 1995 as the Chief Financial Officer and he performed the functions noted above through 2006. Bob

Robert J. Drake, CPA, Chief Financial Officer2021-03-12T00:07:23-07:00

Mark Severson, P.E. Arizona Branch Manager / Business Development Coordinator

Mark rejoined Bison Engineering in 2015 after 20 years in the mining and mineral processing industry. He is responsible for business development activities in the Arizona region and for managing Bison/EEMC services in the Tucson office. Mark is a Professional Engineer with a B.S. in Environmental Engineering from the Montana College of Mineral Science and Technology. During his career, Mark has worked in Montana, Wyoming, Utah, Alaska, California, and Australia. In his various engineering, managing, and global advising roles, Mark managed operational compliance with state, federal, and international environmental regulations. Compliance was achieved through right-sized assurance processes,

Mark Severson, P.E. Arizona Branch Manager / Business Development Coordinator2021-03-10T00:04:51-07:00

Jake Wiggs, Q.I. Ambient & GFM Director / Billings Branch Manager

Jake joined Bison in 2015 as a Project Engineer with the Billings Source Testing group. He has a B.S. in Chemical Engineering from Montana State University in Bozeman. Jake became the Branch Manager for the Billings office in 2016. He is the director of the Ambient Monitoring services and gas flow monitor (GFM) manufacturing in Billings, as well as oversees the source testing in the Billings office. Jake has extensive knowledge and experience in flow measurement and stack emission measurement and calculations. Previously, Jake worked as an MWD Engineer for Baker Hughes. He spent two years on

Jake Wiggs, Q.I. Ambient & GFM Director / Billings Branch Manager2021-02-04T16:27:56-07:00

Debbie Skibicki, P.E. Director of Consulting Services

Debbie is a licensed professional engineer in the state of Montana. Debbie joined Bison in 2013 and is the director of  the consulting services department . Debbie has a Bachelors of Science degree in Chemical Engineering and a Masters of Science degree in Industrial and Management Engineering from Montana State University. Debbie manages and oversees projects primarily for major source clients (e.g., lime manufacturing, power generation, petroleum refining) for construction and operation project permitting (Title V, PSD, and minor modifications), control technology strategy and analysis, applicability analyses, compliance assistance, reporting, compliance audits, enforcement strategy, and agency negotiation.

Debbie Skibicki, P.E. Director of Consulting Services2021-02-02T12:54:40-07:00

Robert “Bo” Wilkins Helena Source Testing Group Leader

Certifications: 40 Hr. Hazardous Waste Operations and Emergency Response Outdoor Emergency Care Technician Mining Safety and Health Administration (MSHA) QSTI exams Groups I, II, II and IV Education:  B.S. in Environmental Chemistry from Beloit College, Beloit, Wisconsin. Bo joined Bison in 2017 and initially worked with Consulting Group. Bo is currently the Source Testing Group Leader, overseeing operations of the Helena testing group. He conducts compliance and FYI testing on all types of industrial facilities. He has experience in equipment maintenance/repair, opacity observations, PM10 audits and calibrations, and protocol/report production. Bo previously worked for the Montana

Robert “Bo” Wilkins Helena Source Testing Group Leader2021-02-04T16:38:24-07:00

Jeffrey T. Chaffee, P.E. Executive Manager

Certifications: Professional Engineer Jeff has over 40 years of experience in engineering and in management of environmental projects and programs in industry, government, and consulting. Jeff joined Bison in 1996 and served as Vice President for many years before assuming the position of President. He holds a B.S. degree in Environmental Engineering from the Montana Tech and an M.S. in Civil/Environmental Engineering from Oregon State University. Jeff is a registered Professional Engineer in Montana. Jeff has served in a variety of technical and management roles at Bison since 1996. At Bison, Jeff has focused on managing environmental

Jeffrey T. Chaffee, P.E. Executive Manager2018-12-06T15:25:20-07:00

Harold W. Robbins Executive Manager

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

Harold W. Robbins Executive Manager2019-01-11T13:37:51-07:00
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