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<br />. <br /> <br />. <br /> <br />Stream Flow <br />Records <br /> <br />Water Quality <br />Records <br /> <br />Station <br /> <br />a. <br /> <br />Colorado River near <br />Dotsero (09070500) <br /> <br />1940 - present <br /> <br />}) <br />1962 - present <br /> <br />b. <br /> <br />Colorado River below <br />Glenwood Springs <br />(09085100 ) <br /> <br />1966 - present }) <br /> <br />c. <br /> <br />Colorado River near <br />Glenwood Springs <br />(09071100) <br /> <br />}) <br />1941 - present <br /> <br />d. <br /> <br />Grizzly Creek near <br />Glenwood Springs <br />(09071300) <br /> <br />1976 - present <br /> <br />1977 - present <br /> <br />e. <br /> <br />Roaring Fork River at <br />Glenwood Springs <br />(09085000) <br /> <br />1905 - present <br /> <br />}) <br /> <br />11 Facilities to continuously record electrical conductivity and <br />temperature were installed by the U.S.G.S. .before January 1, 1980. <br />Weekly laboratory analysis for total dissolved solids and common ions <br />by Water and Power also began in January 1980. <br /> <br />Water and Power is measuring flows and temperatures and 1S <br />sampling (on a bi-monthly basis) some of the springs near Dotsero and Glenwood <br />Springs. Laboratory analysis of total dissolved solids and common ions is <br />being done in the Water and Power Regional Laboratory at Salt Lake City, <br />Utah. Analyses include CA, MG, NA, K, C03' HC03' CL, and S04' <br /> <br />3.3 Response <br /> <br />No response is required for section 3. <br /> <br />4. SUMMARY OF REQUIREMENTS <br /> <br />4.1 General Approach <br /> <br />The contractor will provide professionl services to investigate <br />and analyze problems and possible solutions to reduce the entry of saline <br />flows to the Colorado River from the Glenwood and Dotsero Springs. In so <br />doing, he will apply recognized research practices in geology, hydrology, <br />chemistry, environmental sciences, economics, and general engineering. <br />The contractor will develop structural and non-structural alternative plans, <br />including appraisal level designs and estimates (see Appendix 1 DEFINITIONS) <br />for fully or partially solving the problem and will evaluate recommendations <br /> <br />D-5 <br />