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All posts in “Transportation”

By Air Sciences Inc.

Oregon DEQ’s Non-road Diesel Emission Inventory

The Oregon Department of Environmental Quality (DEQ) has issued the final Oregon Nonroad Diesel Equipment Survey and Emissions Inventory, completed with the help of Eastern Research Group, Inc. (ERG); Good Company LLC; and Oak Leaf Environmental, Inc. The aim of this study was to generate Oregon-specific data of non-road equipment characteristics, such as: engine age, activity rate, fuel consumption, and geographic distribution.

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New Article Highlights Air Quality Impacts of Road Salts

One of Air Sciences’ senior scientists, Dr. Katheryn Kolesar, recently published an article in Atmospheric Environment, with colleagues from the University of Michigan’s Pratt Lab, examining particulate formation due to road salt applications.
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Latest Posts

  • The Regional Haze Rule, Part III
  • Gold Ore Processing and Production Facilities Permitting
  • Oregon DEQ’s Non-road Diesel Emission Inventory

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Air Sciences is a team of scientists and engineers dedicated to finding the right solutions for our clients.

We specialize in air quality services including dispersion modeling, permitting, compliance, monitoring, data management, and fire science.

Air Sciences is a certified SBE (Proprietary) company with the City of Los Angeles.

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Latest News

  • The Regional Haze Rule, Part III

    In our last post on this topic we left off asking the question, “given how much wildland fires change year to year, how do we build an emissions inventory (EI) that is representative of […]

  • Gold Ore Processing and Production Facilities Permitting

    In 2011, the United States Environmental Protection Agency (EPA) promulgated National Emissions Standards for Hazardous Air Pollutants (NESHAP) for gold ore processing and production facilities. This rule is set forth in Volume 40 of […]

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