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Comment Period

DOC Coyote Ridge Corrections Center, Connell

Air Quality Notice of Construction application

Feb. 26, 2018 - Mar. 28, 2018

The Washington Department of Corrections (DOC) manages a medium security prison with a minimum security camp in Connell. The facility, called the Coyote Ridge Corrections Center, has a street address of 1301 N. Ephrata Ave., Connell, WA, 99326. DOC applied to Ecology for approval to replace an obsolete emergency generator with a new engine that is slightly larger. The emergency engines at the facility are used when electricity from the local utility is interrupted. The emergency power is important for firefighting, rescue operations, smoke removal systems, communication systems, ventilation systems, and more. The obsolete engine (a 750 kW Detroit Diesel) is to be replaced with a Caterpillar C27 800 kW (1214 bhp) engine. All emissions of the new engine were considered for this project (no discounting for the operation and emissions of the old engine). The emissions totals for the new engine are as follows:
  • NOx 0.33 tons per year.
  • VOC 0.018 tons per year.
  • Particulate Matter (PM) 0.011 tons per year. 
  • CO 0.19 tons per year.
  • SO2 0.0003 tons per year.
All PM from diesel engines is considered diesel engine exhaust particulate (DEEP) which is a regulated toxic air pollutant in Washington. The DEEP emissions for this project required dispersion modeling and impact analysis by Ecology toxicologists. Ecology determined that DOC has satisfied the requirements of New Source Review in WAC 173-400-113 and the toxics requirements of WAC 173-460. Ecology expects to approve this project.

Comment by March 28, 2018

The public is invited to comment. Written comments received by Mar. 28, 2018 will be accepted by email or mail. A public hearing will be held if Ecology determines there is significant public interest.
  Project documents for public review are available below, as well as at:
Mid-Columbia Library Connell Branch, 118 N. Columbia Ave., Connell 
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Robert Koster, Air Quality Engineer
Department of Ecology
4601 N. Monroe St.
Spokane, WA 99205
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Robert Koster
Air Quality Engineer

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