The Yakima River and adjacent waters will be evaluated for toxic chemicals found commonly in effluents and sewage sludges from wastewater treatment plants, in CAFO runoff, and in agricultural chemicals, such as fertilizers and pesticides. Land-Disposed Sewage Sludge and agricultural chemicals are applied to Lower Yakima Valley lands that are home to vulnerable and disadvantaged people placed at risk by exposure to these toxic chemicals. This study will reveal the presence of toxic chemicals.