Answer the following questions on the TMDL-regulated pollutant/stressor selected: CHLORIDE. Note that paragraphs generally include a topic sentence, 2 – 4 supporting sentences and a concluding sentence. In scientific writing, it is common practice to reference any information from an outside source. The sentence below is an example:
Dioxins generally enter the environment as a by-product of both industrial and natural processes. They may be a by-product in the manufacturing of organochlorines, in the incineration of chlorine-containing substances (e.g., polyvinyl chloride), and in the bleaching of paper (Beychok, 1987).
Reference: Beychok, M.R. A database of dioxin and furan emissions from municipal refuse incinerators. Atmospheric Environment. 1987, 21, 29-36. DOI: 10.1016/0004-6981(87)90267-8
References can be listed at the end of the write up. Please use the American Chemical Society (ACS) style guidelines for your references (https://libguides.williams.edu/citing/acs). You may also use another accepted formatting standard (e.g., APA, MLA, Chicago, or Harvard), but be sure to be consistent. One method is to find the reference in Google Scholar and select the citation logo. This will give the reference in the standard format, so that it may be copied and pasted into the bibliography. Be consistent and use the same format for the entire bibliography.
a. Find your pollutant/stressor on the Clean Water Act 303d list for the Los Angeles Region (Regional Board 4) and list two water bodies in the Los Angeles Region for which your pollutant/stressor is listed on an Excel file on BrightSpace. Note this list is for all of California; please focus on Los Angeles County. It will be helpful to use the sort function in Excel. More information about the California 303d list and additional information about the pollutants at each site is available at: https://www.waterboards.ca.gov/water_issues/progra…
b. To which of the chemical categories listed in §5.3 does your pollutant belong?
c. For inorganic molecules, write the chemical formula including appropriate charges. For organic molecules, draw the chemical structure (It is acceptable to draw the chemical structure by hand.) For both inorganic and organic molecules, find the molecular weight. For non-chemical (e.g., viruses, coliform, eutrophic, organic enrichment, pH, and trash) briefly explain what this stressor is and why it is important.
d. Write a paragraph discussing the sources of this pollutant to impaired waters. Reading §5.3 in Masters and Ela will be helpful as well as references available on the web including:
Agency of Toxic Substances and Disease Registry
e. Write a paragraph discussing the adverse effects of this pollutant to impaired waters and/or organisms (including people) that may be exposed to them.