Zach Harding, QSTI Environmental Scientist

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 is certified by the Source Evaluation Society as a Qualified Individual in the performance of source testing. Zach currently serves as the Director of Source Testing for Bison and manages all source testing-related activities and personnel. He also serves as the Technical Director on the Quality Management Team. Zach specializes in logistics, planning, and management of Bison’s most complex and challenging projects. Prior to joining Bison, he was

Zach Harding, QSTI Environmental Scientist2022-06-13T15:25:23-06:00

Daniel Bitz Environmental Engineer

Daniel is an Environmental Engineer who joined the Ambient Monitoring group in the Helena office of Bison in 2022. He holds a B.S. in Electrical Engineering from Montana State University. His project assignments commonly include ambient air and meteorological data collection, quality assurance, processing and reporting. He performs quality assurance audits, calibrations and maintenance on a variety of ambient monitoring systems, including PM10, PM2.5, SO2, and meteorological installations. Daniel also performs audits, calibrations, and maintenance on continuous emissions monitoring systems. He performs siting, installation, and maintenance of remote meteorological and ambient air data collection systems. Daniel also

Daniel Bitz Environmental Engineer2022-06-02T16:17:36-06:00

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

Don V. Milmine, E.I.T. Project Engineer

Certifications: Engineer In Training MSHA/OSHA Safety Trained HAZWOPER Certified Don is a Project Engineer ll and has been with the Ambient Monitoring group in the Billings office of Bison since 1999. He has been providing technical services to industrial and governmental clients for over 37 years. He holds a Bachelor of Science degree in Environmental Engineering from Montana Tech. His project assignments commonly include ambient air and meteorological data collection, quality assurance, processing and reporting. He performs quality assurance audits, calibrations and maintenance on a variety of ambient monitoring systems, including PM10, PM2.5, SO2, and meteorological installations.

Don V. Milmine, E.I.T. Project Engineer2019-04-24T08:55:59-06:00

Steven R. Heck Meteorologist/Project Scientist

Steve joined Bison in 2013 and has a Bachelor of Science degree in Meteorology from the University of Utah. He has over 35 years of professional experience in air quality and meteorology consulting, with an emphasis on data analysis and quality assurance. Prior to joining Bison Steve was an independent consultant. He also spent four years as the quality assurance officer for a commercial analytical laboratory. As a Meteorologist / Air Quality Scientist at Bison, Steve leads several ambient air quality and meteorological monitoring projects, including real-time particulate/weather monitoring networks at two EPA-designated Superfund sites. Steve’s responsibilities

Steven R. Heck Meteorologist/Project Scientist2019-01-11T14:30:32-07:00

Adam Bender, Q.I. Environmental Scientist

Certifications: Infrared Thermographer Certified MSHA/OSHA Safety Trained IATA/ICAO Dangerous Goods Shipping Certified Method 9, Visible Emmissions Evaluator, Certified First Responder training Certified Adam joined Bison in 2011 and has a Bachelors of Science degree in Geology with an emphasis in Invertebrate Paleontology from the University of Montana.  Adam has five years of civil engineering experience as a land surveyor and two years of experience as a field geologist in gold exploration. At Bison Adam is a project manager and source testing team member who specializes in isokinetic test methods. He is chairman of the safety committee and

Adam Bender, Q.I. Environmental Scientist2019-03-19T14:47:52-06:00

Conor Fox, Q.I. Environmental Scientist

Conor joined Bison in 2017 as a member of the Source Testing group. He has a Bachelor of Arts in Environmental Studies from Carroll College and is an environmental scientist in the Helena office. Conor has six years of experience as a project manager and compliance inspector. Conor is a project manager for air emissions testing in accordance with EPA methods for both engineering and compliance purposes for a variety of clients. He has extensive experience and knowledge in Boiler MACT compliance testing, Title V compliance testing, JJJJ and ZZZZ engine testing and fourier transform infrared (FTIR)

Conor Fox, Q.I. Environmental Scientist2021-02-04T16:36:43-07:00

Leslie “Sam” Zierke GFM Supervisor

Sam joined Bison in 2015 through the acquisition of EEMC/EMRC. Sam has an Associates of Arts degree in Applied Science from Northwest College in Powell, Wyoming. He started working for EEMC/EMRC in 2008 on the stack testing crew and eventually his experience led him into the manufacture of gas flow monitors (GFM). Sam currently works in the GFM group in the Billings office, where he has helped to design and manufacture GFM using his experience in flow measurement and electronics. He is also involved in tech support for GFMs and performs IT support for the Billings office.

Leslie “Sam” Zierke GFM Supervisor2019-01-11T14:03:00-07:00

Jennifer Kessler Environmental Scientist

Jenn joined the Source Testing group at Bison in May 2017. She holds a Bachelor of Science degree in Environmental Management from University of Maryland University College. In addition to report writing, Jenn has assumed some lab manager duties; she processes source test filters and samples and maintains filter/sample tracking records. She helps oversee equipment and chemical inventories, and tracks safety and testing certifications and renewal dates. Jenn assists with source testing projects as needed. She previously worked as a leak detection and repair (LDAR) technician for petrochemical and natural gas facilities. This testing included Method 21

Jennifer Kessler Environmental Scientist2019-01-11T13:55:39-07:00

Riley Madsen Environmental Technician

Riley joined Bison in May 2017 after a year of working as an environmental technician for Think Environmental, collecting, managing, and reporting environmental data to meet environmental compliance. He also spent two years as a lead Kohler engine technician and he received his lifetime certification as a Kohler engine specialist in 2015. Riley applies his high levels of electrical, mechanical and troubleshooting skills to stack testing and building gas flow monitors. When he isn’t working, Riley spends his free time playing drums with his band, which has been performing around the state for over seven years. Riley

Riley Madsen Environmental Technician2019-01-11T14:05:54-07:00
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