Protecting Oregon's Environment
Oregon State Seal
Oregon Department of Environmental Quality

Eastern Region

Air Quality

Eastern Oregon
About Eastern Region
Contact Eastern Region
Local Projects and Programs
Report a Complaint
Schedule a File Review
State wide
Air Toxics
Air Quality Index
Business Assistance
Maintenance, Nonattainment Areas
Total Maximum Daily Loads

AmeriTies West - The Dalles

Recent Information

DEQ began the odor survey May 12, 2015. DEQ renewed the air quality permit for Amerities-West on March 24, 2015. DEQ issued the permit because the company met all applicable state and federal air quality permitting regulations. View the permit and review report.

View a fact sheet created by DEQ prior to issuance of the permit.

The Odor Nuisance Program

DEQ has received more than the ten required complaint intake forms within a 60 day period and their score triggered the Odor Nuisance Strategy. DEQ is currently in the early stages of developing the odor investigation, and is planning to conduct a comprehensive scientific odor survey. Such a survey will be conducted by trained and certified odor evaluators, and will take into consideration meteorology, general locations of complainants and facility operations. As DEQ implements the strategy and the odor investigation, the agency will continue to take odor complaints from the public. Meanwhile, DEQ will periodically update this site as it implements the Odor Nuisance Strategy.

Background on Amerities-West

The tie treatment plant has been operating in The Dalles since 1922. DEQ issued the first air quality permit for the plant in 1977. Kerr-McGee Corp. (KMC) operated the plant from 1987 through 2004. Amenities West, LLC is the current owner.

When KMC took over the operations it made several improvements at the plant that reduced emissions and the number of complaints decreased dramatically. However, during the permit renewal process in 2002, DEQ received numerous comments about odors and other issues. The permit was issued as proposed, but DEQ committed to work with the concerned citizens and KMC to try and resolve the issues.

A workgroup was formed consisting of concerned citizens, DEQ, and plant personnel and met for the first time in July 2002. Many concerns were brought to the table and discussed at the first meeting. Due to limited resources many of the things people wanted done (e.g., health effects study, ambient monitoring program, immediate installation of capture and control systems, etc.) were beyond the scope of the work group. The workgroup decided to concentrate on collecting information that would be useful to the plant for identifying the root cause of the odors. With this information, the plant could possibly make changes to their operations or identify areas that need additional control to abate the odors. To this end, the workgroup agreed to coordinate a series of odor surveys.

The workgroup conducted a series of informal odor surveys between Nov. 2002 and Aug. 2004 to gather information about the frequency and strength of the odors. The surveys were initially mailed or delivered to those that attended the public hearing and those that lived near the plant. The surveys were also announced in the local paper. Those who participated in the surveys recorded several odor events ranging from mild to extremely unpleasant. An attempt was made to correlate the odor events with plant activities, but there was no consistent pattern. It appeared that the odor events were more likely to occur based on the weather conditions. In general, most of the odor events occurred on warm days when there was a light breeze.

The previous owner formed a Quality Action Team (QAT) to evaluate odor causing activities and make recommendations for improvements to reduce odors. Several improvements were implemented that may have reduced odors. An odor questionnaire was mailed to all residences in The Dalles in early Sept. 2005 and a Town Hall meeting was held on Sept. 14, 2005. Of the 8,757 surveys mailed, the DEQ received 724 and 288 of the respondents clearly identified the tie treatment plant as a source of odors.

Supporting Documents:


  • Frank Messina Oregon Dept. of Environmental Quality Bend, 541-633-2019
  • Jeff Thompson, AmeriTies West at 541-296-1808
[print version]


For more information about DEQ's Eastern Region call 541-388-6146 (Bend) or 541-276-4063 (Pendleton) or email DEQ Info .

Oregon Department of Environmental Quality
Headquarters: 811 SW Sixth Ave., Portland, OR 97204-1390
Phone: 503-229-5696 or toll free in Oregon 1-800-452-4011
Oregon Telecommunications Relay Service: 1-800-735-2900  FAX: 503-229-6124

The Oregon Department of Environmental Quality is a regulatory agency authorized to protect Oregon's environment by
the State of Oregon and the Environmental Protection Agency.

DEQ Web site privacy notice