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Show * l Table 12- 5 WATER QUALITY PROBLEM PARAMETERS AND POTENTIAL SOURCES Parameter Affected Segment Potential Sources Suspended Sediment 3300 - 4500 South 9000 - 14400 South Hydrologic Modifications Bed/ Bank Erosion Construction Total Phosphorus 6400 South- 1800 North 2100 South- 1800 North Agriculture Urban Total Ammonia 2100 South- 1800North Urban/ Irrigation Total Nitrate 5400 South- 1800 North Urban/ Irrigation Total Zinc 6400 South - 3300 South Hydrologic Modifications Urban/ Mining Total Lead 7800 - 3300 South North Temple - 1800 North Hydrologic Modifications Mining/ Urban 5- Day BOD 4500 South- 1800 North Urban/ Irrigation Dissolved Oxygen North Temple - 1800 North Urban/ Irrigation Hydrologic Modifications Coliform Bacteria ( Total and Fecal) 6400 South- 1800 North Hydrologic Modifications Irrigation/ Urban Agriculture the Jordan River and tributaries. DDE, Silex. and 2,4- d were also detected in water samples. Only one of the 112 organic compounds, chloroform, was detected. The toxic substance most frequently exceeding state standards was total mercury. About 75 percent of the 138 samples for total mercury exceeded the state standard of 0.05 micrograms per liter. Other toxic substances that exceeded state standards were: ammonia - 18 percent of samples taken, cadmium - nine percent, copper - nine percent, zinc - six percent, and lead - two percent. In addition to sampling river flows, this study also tested river bottom sediments for the trace elements arsenic, beryllium, cadmium, chromium, cobalt, copper, lead, mercury, selenium, silver and zinc. With the exception of beryllium, all trace elements were detected one or more times. Copper, lead and zinc had the highest concentrations. Trace element concentrations in the bottom materials in the Jordan River increased in a downstream direction. Substantial increases first were observed at 5800 South Street, and they were sustained throughout the remainder of the downstream segment of the study area. minimum levels are important because fish and other aquatic wildlife are extremely sensitive to low levels of dissolved oxygen, and their overall welfare may be more closely related to the minimum levels than to the average levels. Total dissolved solids for the Jordan River range from 800 to 1,200 milligrams per liter. The TDS levels, although relatively high and an indication that the water is unacceptable for culinary use, do not constitute a violation of water quality standards under the current use classification of Jordan River water. Toxic Substances: - A Reconnaissance of Toxic Substances in the Jordan River was made during July 1980 to October 1982 as part of a larger study conducted by the U. S. Geological Survey and published in 1984. Samples for toxic substances were collected at five sites on the Jordan River, at three major tributaries, and at six storm conduits. The study showed the Jordan River, starting at about 90th South, has a diversity of toxic substances with concentrations large enough to be a problem and the concentrations of toxic substances and trace elements increases in a downstream direction. DDD, DDE, DDT, dieldrin, heptachlor, methoxychlor, PCB, and 2,4- d were detected in bottom- material samples from 12- 8 |