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<br />Mr. Dick Brown <br />January 12, 1976 <br />Page 2 <br /> <br />0273 <br /> <br />6. NPDES permit information on page 111-46 should be updated since <br />all Great Western plants now have permits. The report should <br />also recognize and include water quality data on the South Platte <br />collected and analyzed by this Department. <br /> <br />7. We feel the impact on sal inity in the South Platte (page IV-12 <br />and VI-2) is inadequately discussed. The report should note that <br />the net result of increased reservoir evaporation coupled with <br />increased irrigation will be an increase in the mean TDS concen- <br />tration of South Platte waters at the State line. Numerical <br />projections ~f this increase should be a part of the EIS. <br /> <br />8. We concur wi th the concl us ion that eutrophi c condi tions are <br />unlikely in the reservoir and that it will adequately serve to <br />settle out suspended silt. We also recognize that the project <br />will probably result in a net benefit with respect to water quality <br />by providing a quality fishery where one does not presently exist and <br />by stabIlizing streamflow in the lower South Platte therby reducing <br />somewhat the problem of bank erosion and bottom scouring. <br /> <br />Very truly yours, <br /> <br />_,OR, :~EC~Wl;~:Z0 CO",'OL "VISION <br /> <br /> <br />Johathan Scherschligt, P.E. <br />Planning Engineer <br />Water Quality Management Planning Section <br /> <br />JS/mb <br />