About edge

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So far edge has created 42 blog entries.


Bison Engineering, Inc., is a Montana-based, 45 person employee-owned environmental engineering firm with 35 years of experience in helping our clients comply with air quality regulations. We have three locations in MT and AZ. We specialize in air quality permitting, emissions testing, ambient air monitoring, and gas flow monitor design and manufacture. We are looking for a Chief Financial Officer/Controller in our Helena office. This position will be an advisor to the management team, different departments and office locations, evaluating and assisting them with their financial plans and operations. The CFO will be responsible for overseeing all fiscal and fiduciary



We are looking for an experienced source tester to lead emissions testing projects in our Tucson office.


Oregon Air Toxics Video

This video provides a brief overview of what's going on with development of a new Oregon rule to regulate industrial air emissions of toxic pollutants. The video also briefly describes Bison's perspective and suggestions for facilities. Please call us if you have any questions.

Oregon Air Toxics Video2018-08-21T14:41:05+00:00

Adam Bender, Q.I. Environmental Technician

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 an

Adam Bender, Q.I. Environmental Technician2018-08-21T14:41:06+00:00

Bret W. Gallo Project Engineer

Certifications: MSHA/OSHA Safety Trained Certified FLIR IR Thermographer Bret joined Bison in 2006 after working two years as a production enhancement/hydraulic fracturing engineer for Halliburton Energy Services in WY, UT, and CO where he performed slick water, hydrochloric acid, CO2, nitrogen, CobraMax, CobraFrac, and pinpoint stimulations. He holds a Bachelor of Science degree in Environmental Engineering from Montana Tech. Over the past 11 years and currently, he oversees and manages projects for thousands of upstream and midstream oil and gas facilities throughout tribal lands, MT, ND, WY, UT, as well as limited experience in CO, TX and PA.

Bret W. Gallo Project Engineer2018-10-03T11:45:03+00:00

Brian Murphy, E.I.T. Staff Engineer

Brian joined Bison in 2013. He works in the Permitting group and frequently assists with source testing projects. He graduated from Carroll College with a Bachelor’s of Science degree in Civil Engineering with an environmental emphasis. Brian has provided air permitting and regulatory compliance assistance to clients from a variety of industries including: limestone, hard rock, and coal mining/processing; timber and wood products; biofuel production and biorefineries; baseline and peaking electrical generation with coal and natural gas, cement production; grain malting; and food production. Brian has specialized in dispersion modeling analyses and supports spatial analyses using Geographic Information

Brian Murphy, E.I.T. Staff Engineer2018-08-21T14:41:06+00:00

Jake Amerman, QSTI Staff Engineer

Certifications: QSTI 10 Hour OSHA Visible Emissions Evaluator for Method 9 Mining Safety and Health Administration (MSHA) Jake joined Bison in 2018 as a Staff Engineer with the Billings Source Testing group. He has a B.S. in Chemistry and an M.B.A. from the University of Denver. Jake has extensive knowledge and experience in flow measurement and stack emission measurement and calculations. Jake has passed all four QSTI (Qualified Stack Test Individual) exams. Passing these exams proves Jake’s dedication to quality stack testing services. The QSTI exams test an individual’s knowledge regarding the various EPA mandated testing

Jake Amerman, QSTI Staff Engineer2018-10-08T15:54:08+00:00

Kyle DeVerna, EIT Staff Engineer

Certifications: Mine Safety and Health Administration (MSHA) Kyle joined Bison in 2018 as a Field Services Engineer with the Billings Source Testing group. He has a B.S. in Civil Engineering from the Virginia Military Institute in Lexington, VA, and an M.S. in Environmental Engineering from Montana State University in Bozeman. As a member of the Source Testing group, Kyle conducts air emissions testing in accordance with EPA methods for both engineering and compliance purposes for a variety of clients. Kyle also performs equipment maintenance/repair, sample analysis, and protocol/report production. Prior to joining Bison, Kyle taught junior

Kyle DeVerna, EIT Staff Engineer2018-10-03T12:26:59+00:00

Chris Whitten Environmental Technician

Certifications: 40 Hr. Hazardous Waste Operations and Emergency Response Visible Emissions Evaluator for Method 9 Basic Medic First Aid with CPR Mine Safety and Health Administration (MSHA) Chris joined Bison in 2018 as a member of the Source Testing group. He has an Associate Degree in Culinary Arts from Kendall College and is an environmental technician in the Helena office. Chris has many years of experience as a gunsmith, rancher, chef and ambient air monitoring station operator. Chris conducts air emissions testing in accordance with EPA methods for both engineering and compliance purposes for a variety

Chris Whitten Environmental Technician2018-10-03T12:28:41+00:00

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 has

Christopher P. Hiltunen, P.E. President2018-10-08T15:53:43+00:00