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supply to blend with its existing water and to upgrade its water supply system to <br />resolve the disinfection issue. <br />E. EXISTING WATER SUPPLY <br />The Town of Keenesburg currently obtains its water from five wells located in or <br />near Town that draw from the Laramie-Fox Hill Aquifer. A summary of the well <br />information is included in the TZA Water Supply Evaluation Report in Appendix <br />A. The Town also owns two wells at a site in Roggen, nine miles away that also <br />draw from the Laramie-Fox Hill Aquifer. The Roggen wells are not being used at <br />this time because there is no connecting pipeline from the wells to Keenesburg. <br />F. WATER QUALITY ISSUES <br />There are two major water quality issues associated with the Town's water <br />system. The first is the quality of the water itself. The Laramie Fox-Hill water is <br />less than desirable for usage in municipal or irrigation applications. Analysis <br />shows that it exceeds drinking water standards for fluoride. The maximum <br />contaminant level (MCL) for fluoride is 2 mg/I and reported levels of fluoride in <br />the Keenesburg water wells are at 3.1 mg/I. The Colorado Department of Public <br />Health & Environment (CDPHE) has not issued any enforcement orders at this <br />time other than requiring public notice. <br />The Laramie Fox-Hill water also has a high Sodium Absorption Ratio (SAR). <br />This ratio is used to determine the suitability of the water for use in the irrigation <br />of crops and landscaping. A ratio of less than 10 is suitable for irrigation. The <br />Laramie-Fox Hill water in Keenesburg has been recorded at a level of 26.9. As a <br />result, special soil management is necessary for successfully irrigating crops and <br />landscaping. <br />Blending the water from the Laramie Fox Hill Aquifer with that of the Lost Creek <br />Aquifer has been evaluated. Providing a 50-50 blend of the two waters shows <br />that the SAR ratio drops below 10 and the fluoride drops to approximately 1.5 <br />mg/I, which is below the MCL of 2 mg/I. <br />The second water quality issue has to do with proper disinfection contact time. <br />Currently, well water is pumped directly into the Town's water distribution system, <br />which results in some consumers not receiving the proper 30 minutes of <br />disinfection contact time. As was previously discussed, the Phase <br />improvements project will allow ground water to be pumped to the water storage <br />tank prior to being delivered to the distribution system. <br />G. FUTURE WATER REQUIREMENTS <br />Historical annual average water consumption is used to develop a projection that <br />estimates the future water needs for the Town. In 2004, the Town utilized 167 <br />Feasibility Study -Keenesburg, CO <br />1/23/2009 4 <br />