Monday, September 9, 2019

Term Paper, Project Management Assignment Example | Topics and Well Written Essays - 1750 words

Term Paper, Project Management - Assignment Example 2. Usage - Mostly done as a preliminary method of finding out information with regards to the interaction between the environmental stressors or risk agents and the target population, communities, or sites (US EPA, 2012a). 3. How it is conducted - The EPA uses a four-step method which consists of the following: data collection and evaluation; exposure assessment; toxicity assessment; and risk characterization (US EPA, 2012a). Data collection and evaluation aims to gather as much information from the site as possible, such as collecting samples and identifying the presence of stressors such as chemicals in the surroundings. After sufficient data has been gathered and analyzed, exposure and toxicity assessments are done next. Exposure assessment is done in order to analyze the contaminants released, to identify the populations exposed and how these stressors reached them, as well as estimating both the concentrations and intakes using various pathways by which the stressors were able t o reach the studied target areas or populations. The toxicity assessment deals with further quantitative and qualitative studies on the stressors such as performing tests that determine the toxicity levels of contaminants. Lastly, risk characterizations list the sum total possible effects of these contaminants to both the environment and the people such as the potentiality to cause chronic or acute diseases. Also, the probabilities and uncertainties of how these contaminants can reach people are summarized in order to aid future risk assessments to be done in later areas (US EPA, 2012a). 4. Comparison to other kinds of assessments – Baseline risk assessment is the most basic but generalized method of analyzing the current condition of target locations and populations. While it shares many characteristics such as the use of scientific methods in the conduct of other kinds of assessments, it is also the foundation for other kinds of analyses to be conducted in the future, espec ially with the larger areas of study and necessary information. There is also a greater need to incorporate as much information from the areas or sites as possible since these are the levels by which future prediction models will be based on, and will be constantly relied on in succeeding area or population analyses. Thus, in order to create accurate models and risk assessments for each site, the baseline risk assessment must be carefully and thoroughly conducted to prevent future miscalculations and assure that there is appropriate risk-management in these areas (US EPA, 2012a). Comparative Risk Assessment 1. Definition – It is a kind of assessment method wherein the ranking of various effects in importance or relevance are established into a scale which, while not exactly designed to work on a single measuring unit or scale, is quite functional in approximating the effects or consequences of such stressors based on location and population (US EPA, 2006). 2. Usage - The EPA use comparative risk assessments in a way that various risks or important points are referred to and then compared to the approximated scale so as to assist risk assessors in weighing the appropriate measures in accordance to the presence or identity of the risks involved (US EPA, 2006). Such

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