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So far edge has created 41 blog entries.

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. President2019-01-11T14:33:13-06:00

Jake Wiggs, QSTI 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 oversees stack testing and gas flow monitor (GFM) manufacturing in Billings. Jake has extensive knowledge and experience in flow measurement and stack emission measurement and calculations. Jake has earned his QSTI (Qualified Stack Test Individual) certification from the Source Evaluation Society (SES). Earning this certification proves Jake’s dedication to quality stack testing services. A QSTI designation certifies

Jake Wiggs, QSTI Billings Branch Manager2019-01-11T14:20:00-06:00

Mark Severson, P.E. Arizona Branch Manager

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 Manager2019-05-23T17:40:06-06:00

Debbie Skibicki, P.E. Consulting Services Team Leader

Debbie is a licensed professional engineer in the state of Montana. Debbie joined Bison in 2013 and is the consulting services department manager. 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. Beyond air quality,

Debbie Skibicki, P.E. Consulting Services Team Leader2019-04-25T14:34:36-06:00

Shain Chappell, CPA, MBA Controller/Treasurer

Shain joined Bison in 2019 as the Controller/Treasurer. Shain oversees all of the financial aspects of the company and also serves as an advisor to 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 coordinates and maintains the computer network, acts as Human Resources Director, and leads the administrative team. He acts as an advisor to the Bison Board of Directors. Shain has a Bachelor of Business Administration in Accounting from East Tennessee State University, Master of Business Administration

Shain Chappell, CPA, MBA Controller/Treasurer2019-04-23T22:06:43-06:00

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 Manager2019-01-11T13:37:51-06:00

David S. Blankenship, Q.I. Field Services Team Leader

Certifications: Qualified Stack Testing Individual (Groups I, II, III & IV) MSHA/OSHA Safety Trained HAZWOPER Certified Opacity Certified Dave joined Bison in 1997and is a project scientist for the Source Testing group. Dave is certified by the Source Evaluation Society (SES) as a Qualified Individual for the performance of source testing. He has an Associate of Applied Science degree in Environmental Technologies from Montana Tech of the University of Montana. Dave conducts compliance and FYI testing on all types of industrial facilities. He has experience in equipment maintenance/repair, water sampling, opacity observations, PM10 audits and calibrations, protocol/report

David S. Blankenship, Q.I. Field Services Team Leader2019-01-11T13:52:08-06:00

Matthew Nurimba, QSTI Environmental Scientist/Tucson Team Lead

Matt has a Bachelor of Arts degree in Environmental Science and Biological Science minor from the University of California, Irvine. He joined Bison in their Tucson office in 2015 after working as a project supervisor for AirKinetics, Inc. located in Orange County, California. As the Tucson office lead tester, Matt has been managing source testing projects for a variety of sources including cement plants, mobile asphalt plants, refineries, power generating stations, smelters, etc. Matt has several years’ experience in wet bench chemistry analyses, CEMS, test protocol development, field sampling, project deployment and QA/QC. Matt will work with

Matthew Nurimba, QSTI Environmental Scientist/Tucson Team Lead2019-01-11T14:04:04-06:00

Kelly Dorsi, PhD Atmospheric Scientist

Kelly joined Bison Engineering as part of the Source Testing group in 2015. Kelly holds PhD and Master’s degrees in Atmospheric and Oceanic Science from the University of Colorado, Boulder. She received her Bachelor of Arts from St. Olaf College in Chemistry and Russian Area Studies. Her primary responsibilities include processing of field data, report generation and quality assurance. As part of her role she works to improve existing, and develop new, tools and templates for data processing. She is also proficient in EPA source testing methodology and works with the Source Testing group to conduct compliance

Kelly Dorsi, PhD Atmospheric Scientist2019-01-11T14:02:05-06:00

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 Manager2018-12-06T15:25:20-06:00