About Kevin Mathews

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So far Kevin Mathews has created 19 blog entries.


It’s been almost two months since EPA issued its Information Collection Request (ICR) to facilities subject to the Plywood and Composite Wood Products (PCWP) MACT standard. Responses are due at the beginning of next February. Bison is helping prepare responses for several affected clients with facilities in Montana, Oregon, Washington, and Idaho. In particular, we are working with these Northwest clients to ensure we use industry-standard emissions factors that produce consistent, defensible and realistic estimates of hazardous air pollutant (HAP) emissions from kilns and other emissions sources. Please contact us if you have questions about responding to the ICR for

Dec 6, 2017|0 Comments

They’re Here…Oregon Air Toxics Proposed Rules

Just in time for Halloween, Oregon DEQ has published their proposed rules to establish an entirely new permitting program designed to limit air emissions of 255 toxic chemicals and classes of toxic chemicals. The rule will apply to all facilities that are currently required to obtain an Air Quality Discharge Permit or Title V Operating Permit and to any facility DEQ determines could potentially emit non-de minimis amounts of toxic air pollutants.

Oct 22, 2017|0 Comments

Bison at MT Tech Career Fair

Thanks to all the students who visited us at the fall Montana Tech Career Fair. We're always looking for great engineers, scientists, and technicians to join what, in our humble opinion, is a pretty great company (partly because it includes a significant number of Orediggers!).

Sep 14, 2017|0 Comments

Discussion Draft Cleaner Air Oregon Rules Overview

See this post for our brief overview of the recently released discussion draft of the Cleaner Air Oregon air toxics health-based rules. The advisory committee has been asked to review and submit comments by September 9. Then Oregon DEQ will update the discussion draft and issue a formal draft for a 60-day public review period starting mid-October.

Sep 1, 2017|0 Comments

Cleaner Air Oregon Discussion Draft Rules – A Brief Overview

Here's a brief overview "discussion draft" air toxics rules that the Oregon Department of Environmental Quality released a few days ago. Contact us if you would like more information.

Sep 1, 2017|0 Comments

First Look at EPA Budget Cuts

The EPA's acting Chief Financial Officer published this internal memo March 21st providing a first look at detailed budget cuts and program eliminations being considered within the agency. The memo identifies a 31 percent decrease from the 2017 FY budget, but the Washington Post points out that, because EPA's water infrastructure program will be increased, budget cuts to the rest of the agency amount to approximately 43 percent.

Apr 3, 2017|0 Comments

Cleaner Air Oregon Framework Presentation

Just presented this morning at the Mass Timber 2017 Conference in Portland, Oregon. The presentation outlines and provides additional information on the recently released draft framework for Oregon's in-work, risk-based air toxics rule; click here to see a copy of the presentation. The Cleaner Air Oregon Advisory Committee will be reviewing and discussing the framework in a public meeting next Tuesday, 4/4, in Springfield. I plan to attend and will provide another update. Stay tuned! Kevin Mathews p.s. Before attending this conference, I didn't know much about mass timber (someone told me it's short for "massive" timber). The industry has done

Mar 29, 2017|0 Comments

Cleaner Air Oregon Draft Framework Released

As promised, Oregon DEQ and the Oregon Health Authority have released a draft framework for the new set of air toxics rules they have been developing. Check out this announcement on the Cleaner Air Oregon website. Here's a copy of the draft framework. The agencies will be meeting with the CAO Advisory Committee Tuesday, April 4th in Springfield to discuss the proposal and take public comments.

Mar 22, 2017|0 Comments

Cleaner Air Oregon Developments, March 4th

See this update on the Cleaner Air Oregon rule-making process from notes taken at a recent meeting of the Associated Oregon Industries’ Environment and Energy Council.

Mar 18, 2017|0 Comments

Kellen Sullivan Environmental Scientist

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 five years of experience as a source tester and environmental chemist. As a member of the Source Testing group, Kellen conducts 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 operating Boiler MACT compliance testing, Title V compliance testing, JJJJ and ZZZZ testing, and fourier transform infrared spectroscopy (FTIR), which is used to obtain

Dec 9, 2016|0 Comments