C153321 Feasibility Study - Laserfiche WebLink

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1 1 I I 1 1 1 1 1 1 1 I I 1 1 1 1 I 1 The distribution system will be interconnected to provide loop feeding and eliminate dead ends. Proper appurtenances will be installed to provide adequate control and routing of water. 2) Storage, Treatment and Transmission Lines: After due and careful consideration of Alternates I through IVa (revised), the Ridgway Town Board of Trustees has indicated a unanimous decision in favor of Alternate IVa (revised). Although not being the cheaper of all the Alternates, it offers the Town sover- eign right to the water rights in Austin ,Spring, Ridgway #2 and #3 Springs, Coal Creek and Beaver Creek. Accessibility during periods of wet or snowy weather is .limited.._ However, ,with the pipeline 'on' a gravity gradient" little trouble is anticipated'.' ~,-Accegsto the main intake at Beaver Creek and minor,' structures at the above noted Springs and Coal Creek will be limited, but proper design will insure little trouble during these times. As noted in Exhibit Xa. the quality of water is very good. Com- paring,these to the Colorado ,Department of Health Standards (Exhibit ~ - Page 5), the standards either meet or exceed those required. Of primary concern, how-' ever, is the ph of, 7.75. At present the Town's water at the point of transmission to the distribution system has a ph of !8.30 which is on the alkalinity side of the ph scale (7.0 being neutral with 0 - 7.0 acidic and 7.1 - 14.0 being alka- line). Hence, ,the,ph of 7.75 is also on the'alkaline side of the scale. While the pipeline will eliminate future increase in the ph (i.e., from 7.75 to 8.30), concern must be given to reducing the existing ph factor to a neutral one of 7.0. This may require additional treatment and if so, an additional cost in treatment will be incurred. Subsequently, the cost of operation and maintenance will be reflective of this. 35