...... 1 1.2 Sources of Data ..................................................................... 1 1.3 Data Elements ........................................................................................ 2 1.4 Data Quality ..................................................................... 2 Introduction Contaminant Data Collection Methodology For a number of reasons, there is an ongoing interest in quantifying chemical contamination in surface water systems. In the absence of a standard way to measure chemicals in waters, researchers have developed a wide variety of approaches to measure contaminants of emerging concern and their potential effect on aquatic life. Contaminant studies require data on several parameters. The following table lists the specific parameters examined with respect to contaminants of emerging concern, and lists those studies which used statistical analysis to identify the magnitude and the rate at which potential contaminants are entering or leaving the water system. The tables are organized into six sections: 1.4.1.1. Contaminants of emerging concern: biological response to contaminants, biological response rate of contaminants, environmental effect of contaminants, environmental assessment (EA) of contaminants, and non-EA of contaminants.
1.4.1.2. Contaminants of emerging concern: toxicity, toxicity index (MTV), and exposure limits (ELS).
1.4.1.3. Contaminants of emerging concern: concentration of contaminants, contaminants at a point water level, concentration at a specific point, and percent of the total dissolved solids (TDS).
1.4.1.4. Contaminants of emerging concern: bioaccumulation of contaminants, iota and ecosystems, potential for impacts to aquatic life, and potential for environmental effect.
1.4.1.5. Environmental studies (environment). Table Of Contents.
2. Introduction Contaminant Data Reporting System.
3. Background Contaminant Data Source and Uses.
4. Data Elements of Contaminant Survey Data Analyzed by S&A Engineers Laboratory ......................................... 2 Overview This section provides an overview of the various methods that have been used to quantify chemical contaminants and summarizes them according to their purpose. This data consists of individual chemicals' concentrations in water, concentrations in a variety of common water contaminants, and chemical effluents from wastewater treatment plants (Watts). An explanation of the meaning behind these terms is provided below: Concentrations in water. Concentrations in water are represented by the chemical molar mass of dissolved substance(s) for a given concentration of water. For example, there is a known concentration of nitrate in water.
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Treating Contaminants of Emerging Concern A Literature Review Database August 2010 U.S. Environmental Protection Agency Office of Water (4303T) Engineering and Analysis Division 1200 Pennsylvania
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Treating contaminants of emerging refers to the process of removing or reducing newly identified pollutants in water or wastewater treatment facilities.
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