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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />In regards to the fluoride standard, the EPA has recently adjusted its Maximum <br />Contaminant Level for fluoride to 4.0 mg/L. Levels above 4.0 mg/L are believed to <br />pose health effects related to fluorosis of bones which leads to crippling. <br />Colorado's standard for fluoride is currently 2.4 mg/L, but will be changed by <br />the end of 1987 to reflect the 4.0 mg/L standard. In the interim, they will not <br />enforce the 2.4 mg/L standard. Colorado currently advises communities (and will <br />continue to advise them) with fluoride levels between 2.0 mg/L and 4.0 mg/L that <br />cosmetic staining of teeth will occur and they recommend treatment to reduce <br />levels to less than 2.0 mg/L. Such treatment is not, however, required by law. <br />Due to the nature of the water involved and the characteristics of the reservoir, <br />i.e. relative shallow, no special provisions are necessary for selective with- <br />drawal. Turnover in the reservoir is fairly rapid and the resulting water is <br />apparently well mixed. Existing screens on the dam outlet structure will be <br />maintained in place. <br /> <br />Rate of sedimentation in the reservoir is judged to be quite small due to the <br />upstream presence of several detention ponds and storage reservoirs coupled with <br />the overall rocky nature of the parent soils group. No significant loss of <br />reservoir storage capacity due to sedimentation has been noted in the gO-year <br />history of the dam and reservoir. <br /> <br />30 <br />