-*- Intake /Avg -■- RM 280 /Avg -a- - Intake /Min -A - RM 280 /Min
Figure 10-6 Long-term trends of DO concentration upstream and downstream of Atlanta wastewater discharges. Source: EPD, 1981.
during October of 1988, due to an unidentified agent (Mauldin and McCollum, 1992). The many impoundments along the river and releases of cooling water from fossil fuel plants, in excess of 1,000 cfs, contribute to water temperature increases, further reducing the waste assimilation capabilities of the river. Atlanta's population is served by 27 water pollution control plants, with designated flows greater than 0.01 mgd, located along the river and its tributaries. The 12 largest water pollution control plants in the Atlanta region have a total design capacity of 404 mgd. The largest facility, the R. M. Clayton plant, is operated by the city of Atlanta and has a capacity of 120 mgd. More than half of the total volume of wastewater enters the river near river mile 301 downstream of the city of Atlanta's water intake (Mauldin and McCollum, 1992).
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