| Title |
Stanwood Class II Inspection - September 8-9, 1992 |
| |
| Publication number |
Date Published |
| 93-e29 | September 1993 |
|
| VIEW NOW |
Stanwood Class II Inspection - September 8-9, 1992 (Number of pages: 37) (Publication Size: 1MB)
|
Trouble viewing? Try these free options.
|
|
| Author(s) |
Heffner, M. |
| Description |
A Class II Inspection was conducted at the Stanwood Wastewater Treatment Plant on September 8-9, 1992. Stanwood operates a lagoon-type secondary wastewater treatment system discharging to the Stillaguamish River. An algal bloom occurred in the lagoon during the inspection resulting in degraded effluent quality. Comparison of inspection data with NPDES permit limits found BOD5, TSS, and fecal coliforms in excess of weekly and/or monthly permit limits. Few priority pollutant scan compounds were detected in the Stanwood influent, effluent, and sludge samples. Several of the bioassay organisms tested were sensitive to the Stanwood effluent. Microcystis, the organism comprising the algal bloom, may have contributed to the observed toxicity. |
REQUEST A COPY
|
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 |
EAP Publications Coordinator at 564-669-3028 or EAPpubs@ecy.wa.gov |
| Keywords |
priority pollutant, wastewater treatment plant, bioassay, toxicity, river, NPDES, effluent, fecal coliform |
| WATERSHED |
Water Resource Inventory Area 05 Stillaguamish |
Copyright © Washington State Department of Ecology. See https://ecology.wa.gov/About-us/Accountability-transparency/Our-website/Copyright-information.
