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  • Thanks a million, Maximilien!
    A chart is really all it is. A chart made up of increasingly darker shades, from white to grey to charcoal to black. smokestack.jpg

    A chart that brought a consistent ranking system to something that had proven difficult to measure or quantify.
    Maximilien Ringelmann, a French civil engineer, developed his Smoke Chart in 1897, largely in response to  increasing air pollution following the Industrial Revolution. As more cities choked on smoke-filled air, Ringelmann wanted to create a way to gauge the pollution and particulates coming from industrial smoke stacks. He wanted something anybody could use, at any time, to gauge pollution. 
    His chart, with increasing gradients at equal intervals, was the answer. Anybody could hold up the chart and match the smoke to the color of a box. Light smoke indicated fewer particulates and more water particles, while black smoke indicated denser pollution caused by incomplete combustion.
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Director Dick Pedersen

Meet Director Dick Pedersen
Comcast newsmakers interview Department of Environmental Quality Director Dick Pedersen about the agency's approach to solving environmental problems. Watch the video.
​​​​​​​​Open for Public Comment: Columbia Pacific Bio-Refinery air quality permit


Governors promote zero-emission vehicles
​​​​​​​​​​Zero-emission vehicles provide enormous benefits to the environment by conserving energy and reducing air pollution and greenhouse gas emissions. The governors of Oregon, California, Connecticut, Maryland, Massachusetts, New York, Rhode Island and Vermont have signed a cooperative agreement to promote a robust national market for electric and hydrogen-powered cars by:
  • • Harmonizing building codes to make it easier to construct new electric car charging stations
  • • Leading by example by including zero emission vehicles in their public fleets
  • • Evaluating and establishing financial and other incentives to  promote zero emission vehicles
  • • Considering establishing favorable electricity rates for home charging systems; and
  • • Developing common standards for roadway signs and charging networks.

Oregon already has charging stations and other infrastructure in place to make it easy to own and operate an electric car. Read more…
DEQ Report Featured on OPB Oregon Field Guide
OPB's Oregon Field Guide recently featured a story about DEQ's ecological assessment of the Lower Mid-Columbia River. This study is the first of its kind on this section of the Columbia. Watch the OPB video featuring DEQ's Water Quality Monitoring Manager Aaron Borisenko, or read the DEQ report.