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| Title | Investigation into Recurring Toxicity of the Chinet Company Columbia River Intake | |||
| Month-Year Published | September 2001 | |||
| Online Availability |
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| Short Description |
Daphnia pulex (water flea) acute bioassays were conducted on samples of Columbia River intake water from the Chinet Company in Wenatchee approximately twice monthly between May and June 2001. The impetus for the monitoring program was data collected by Chinet showing the intake became acutely toxic to Daphnia during the spring of 1999 and again in the spring of 2000. (Also see abstract below) | |||
| Publication Number | 01-03-030 | |||
| Author(s) | Johnson, A. and B. Era | |||
| Print Availability | ||||
| Number of pages | 13 pp. | |||
| Keywords | chemical, Columbia River, investigation, river, toxic, toxicity, water | |||
| Subject Waterbodies |
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| Abstract | Long Description |
Daphnia pulex (water flea) acute bioassays were conducted on samples of Columbia River intake water from the Chinet Company in Wenatchee, Washington approximately twice monthly between May and June 2001. The impetus for the monitoring program was data collected by Chinet showing the intake became acutely toxic to Daphnia during the spring of 1999 and again in the spring of 2000. More intensive sampling by the Washington State Department of Ecology during 2001 showed no evidence of toxicity. Chemical data collected during the monitoring program revealed no unusual levels of metals or detections of pesticides, herbicides, or other synthetic organic compounds. This segment of the Columbia River is on the 1998 303(d) list, based on a Chinet intake sample failing a water column bioassay in 1995 (Ceriodaphnia reproduction). It is recommended that this segment be reassigned to Part 5 of the 2002 proposed 303(d) list: Undetermined Status. |
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