Environmental Legal Framework in the United States, NEPA, and Environmental Justice SLP

Conduct a critical review of the standard-setting process for one standard from one of the substances in one of the lists provided below.
For the Module 1 SLP, select one of the substances listed below and, in a 3- to 4-page paper, answer the following questions. Support your answers with the literature. 1.Explain the source of this substance in occupational or environmental settings. 2.Explain the significance of this substance from an environmental or occupational health perspective and why it needed to be regulated. 3.Describe historical events that involved environmental or occupational exposures to this substance, prior to regulation.
List of drinking water standards: Arsenic Lead and Copper Radionuclides