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| Title | Washington State Pesticide Monitoring Program: 1993 Surface Water Sampling Report | |||
| Month-Year Published | October 1994 | |||
| Online Availability |
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| Short Description |
The Washington State Pesticide Monitoring Program (WSPMP) was initiated in 1991 by the Department of Ecology to characterize pesticide residues geographically and over time in ground water and surface water throughout Washington. WSPMP surface water samples were collected at nine sites in April, June, August, and October of 1993, and from two additional sites in June only. Sites were selected to represent various pesticide uses; including agricultural use west of the Cascate instream conditions as they relate to Water Quality Standards, detect changes in water quality over time, and provide current water quality information for Ecology's water quality based permitting of dischargers. (Also see abstract below) | |||
| Publication Number | 94-164 | |||
| Author(s) | Davis, D. and A. Johnson | |||
| Print Availability | ||||
| Number of pages | 21pp. + app. (61 total) | |||
| Keywords | ambient monitoring, bacteria, basin, fecal coliform, ground water, monitoring, outfall, pesticide, Pesticides, Puget Sound, river, sampling, sewage, sewage treatment, standards, stream, surface water, temperature, treatment, trend, Washington State Pesticide Monitoring Program, water, water quality, water quality standards | |||
| Subject Waterbodies |
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| Abstract | Long Description |
The Washington State Pesticide Monitoring Program (WSPMP) was initiated in 1991 by the Department of Ecology to characterize pesticide residues geographically and over time in ground water and surface water throughout Washington. WSPMP surface water samples were collected at nine sites in April, June, August, and October of 1993, and from two additional sites in June only. Sites were selected to represent various pesticide uses; including agricultural use west of the Cascate instream conditions as they relate to Water Quality Standards, detect changes in water quality over time, and provide current water quality information for Ecology's water quality based permitting of dischargers. In Wateryear 1991, rivers and streams monitored by Ecology's Ambient Monitoring Program exhibited occasional violations of Washington State Water Quality Standards. The majority of these violations involved elevated concentrations of fecal coliform bacteria and increased summer water temperatures. Water quality information collected at the 12 core/bench mark stations within the Puget Sound basin were selected for more in-depth analysis, including the use of the Seasonal Kendall Statistical Test for trend detection, and are discussed in more detail. The most significant trends were found on the Lower Green River and reflect substantial water quality improvements that correspond with relocation of the Renton Sewage Treatment Plant Outfall. |
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