Laserfiche WebLink
Section 779.16 (a) Continued. <br /> <br />Surface Water Drainage Systems: Water Quality <br />Revised 11/20/80 <br />General Area <br />Surface water quality in the general area is affected at the base- <br />line level by agricultural development, existing roads, and pre- <br />vious mining. Concentrations of major and trace constituents in <br />the general area are presented in Table 13, USGS .Canadian River <br />Water Quality Data. From analyses of samples taken at USGS Station <br />06619400, surface water in the Canadian River upstream from mining <br />activities contains mostly calcium and bicarbonate ions and minor <br />amounts of magnesium and sulfate ions. Samples taken at USGS <br />Station 06619450, downstream from mining activities, exhibit the <br />same chemical characteristics, with slightly higher concentrations <br />of magnesium, sulfate and nitrogen. As explained in Section 780.21 <br />- (c) under the sub-heading, "Surface Water Effects - Ion Balance of <br />Surface Water", the magnesium-sulfate component can be partially <br />. attributed to mining activities. The elevated nitrate-nitrogen <br />levels are probably due to the influx of chemicals from the heavily <br />farmed Canadian River floodplain. <br />(Return to page 779-42, Mine Plan Area) <br />779-42 as <br />