Publications Home || Browse by topic || Browse by program || Ecology website

Publication Summary

Our Ecology website has changed, which can cause broken links.
To report these, please contact us with the publication and broken link.


City of Colville Sewage Treatment Plant Class II Inspection

Publication number Date Published
95-357October 1995
VIEW NOW City of Colville Sewage Treatment Plant Class II Inspection (Number of pages: 46) (Publication Size: 3MB)

Trouble viewing? Try these free options.
Author(s) Hoyle-Dodson, G.
Description An announced Class II Inspection was conducted October 3 - 6, 1994 at the Colville City Wastewater Treatment Plant (Colville) in Stevens County, Washington. Large to moderate reductions in BOD5, TSS, TOC, NH3-N, and NO2&NO3-N occurred across the plant. The effluent ammonia nitrogen and chloride concentrations found at mixing zone boundaries, derived from ambient conditions found during the inspection, exceeded state acute and chronic freshwater quality standards. Several problems with plant design and operation were identified, and corrective strategies are suggested.
The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.

ADA Accessibility
The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), Section 504 and 508 of the Rehabilitation Act, and Washington State Policy #188.
Visit Ecology’s website for more information.
Contact Joan LeTourneau at 360-407-6764 or
Keywords mixing zone, wastewater treatment plant, county, Inspection, nitrogen, metals, wastewater, treatment, water, water quality, waste, sewage, sewage treatment, mercury, NPDES, effluent, chloride, ammonia
WATERSHED Water Resource Inventory Area 59 Colville