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Title

City of Waitsburg Wastewater Treatment Plant Groundwater Study: Evaluation of Nutrient Loading to the Touchet River

 
Publication number Date Published
10-03-028April 2010
VIEW NOW: City of Waitsburg Wastewater Treatment Plant Groundwater Study: Evaluation of Nutrient Loading to the Touchet River (Number of pages: 71) (Publication Size: 10MB)




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Author(s) Pitz, C. and S. Tarbutton
Description A study was conducted at the City of Waitsburg wastewater treatment plant property. The study purpose was to determine if excess nutrients (nitrogen and phosphorus) associated with the plant are reaching the adjacent Touchet River by groundwater transport. The study data showed that nutrient-rich groundwater is discharging to the river along a 150-200 meter-long section of the property shoreline in the vicinity of the treatment plant infiltration wetland. The study findings will be incorporated with additional surface water monitoring data to determine the impact of this nutrient load on the water quality and ecosystem function of the river.
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Keywords wastewater treatment plant, 303(d), river, water quality, Total Maximum Daily Load, nutrient loading, groundwater, clean water act
WATERSHED Water Resource Inventory Area 32 Walla Walla
DATA Environmental Information Management (EIM) #CHPI004

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Quality Assurance Project Plan: Waitsburg Wastewater Treatment Plant Groundwater Study: Evaluation of Nutrient Loading to the Touchet River