In some lakes, the fish are contaminated with methylmercury. As a member of the Department of Environmental Quality, you have been assigned the job of developing an “advisory” for adult males to limit consumption of fish from these lakes. The advisory will be in terms of a recommended limit on the number of fish meals per unit of time. You must determine the unit of time, that is one per day, or one per week, or one per month, etc. In addition to the EPA recommended values for estimating intake, use 1 × 10−6 for the fraction ingested, a 30-year exposure duration, and a 30-year averaging time to estimate the chronic daily intake. Your superiors have set a hazard index of 0.10 as a matter of policy. The RfD for methylmercury is 1 × 10−4 mg · kg−1 · day−1.
In some lakes, the fish are contaminated with methylmercury. As a member of the Department of Environmental Quality, you have been assigned the job of developing an “advisory” for adult males to limit consumption of fish from these lakes. The advisory will be in terms of a recommended limit on the number of fish meals per unit of time. You must determine the unit of time, that is one per day, or one per week, or one per month, etc. In addition to the EPA recommended values for estimating intake, use 1 × 10−6 for the fraction ingested, a 30-year exposure duration, and a 30-year averaging time to estimate the chronic daily intake. Your superiors have set a hazard index of 0.10 as a matter of policy. The RfD for methylmercury is 1 × 10−4 mg · kg−1 · day−1.
The EPA, or the United States Environmental Protection Agency, is a federal agency of the US government responsible for protecting human health and the environment. The EPA was established in 1970, and its mission is to protect human health and the environment by enforcing regulations and conducting research on environmental issues.
The EPA works to protect the environment and public health through various programs, including the Clean Air Act, Clean Water Act, Safe Drinking Water Act, and Toxic Substances Control Act. The agency also conducts research to better understand environmental issues and develops strategies for mitigating the impact of human activities on the environment.
Overall, the EPA plays a critical role in safeguarding the environment and protecting public health in the United States.
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