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Fesability Study
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Last modified
4/1/2014 11:01:56 AM
Creation date
4/1/2014 11:01:07 AM
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Loan Projects
Contractor Name
Pine River Irrigation District
Contract Type
Loan
Loan Projects - Doc Type
Feasibility Study
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A. ALTERNATIVES TO A CENTRAL WATER SYSTEM <br /> Alternatives to a central water system were considered during the initial feasibility study for <br /> Vallecito Water Company. Individual wells are common in the proposed service area and cluster <br /> systems are present in some locations. Both of these types of supply systems presented <br /> limitations and were not considered to be reasonable solutions to the short term needs of the <br /> persons who reserved a tap and the long term infrastructure needs of the area. <br /> It should be noted that individual wells and "cluster" wells will remain as the only viable supply <br /> sources in some areas because rural water system will have limits to the geographical extent of <br /> the pipelines. <br /> Area Geology and Ground Water <br /> Many studies of geology and ground water have been conducted in parts of the proposed service <br /> area although none has specifically encompassed the entire service area. In spite of this <br /> limitation, these studies provide a reasonable base of data to characterize the area. The studies <br /> demonstrate localized, but widespread problems with ground water quality and quantity. Many <br /> of the studies note the health and safety problems presented by ground water supplies in this <br /> area. <br /> Individual Wells <br /> Individual wells are not an appropriate solution to the infrastructure needs of this area for three <br /> reasons: <br /> 1. The hydrology and geology of this area result in conditions in which water supplies from <br /> wells are frequently poor in both quality and quantity. Many property owners will not be able <br /> obtain a safe, dependable supply from their property. Within the service area there are locations <br /> with good groundwater surrounded by areas of poor groundwater and areas of good groundwater <br /> adjacent to areas of poor groundwater. <br /> 2. Individual wells are not an appropriate solution to providing water supplies on a scale <br /> necessitated by both recent and future anticipated growth in this area. This growth has produced <br /> a situation relative to ground water supplies that can only be expected to get worse. Increasing <br /> numbers of individual wells will produce greater drawdown of the water table and increased <br /> potential for contamination by increasing numbers of ever-closer septic system leach fields. In <br /> addition, the problem of water table drawdown may not be apparent when a well is initially <br /> drilled but may become non-functional in a relatively short time and the property owner loses the <br /> investment. <br /> 3. Individual wells are not an appropriate solution to providing adequate fire protection for a <br /> growing rural community. Even a well that produces sufficient quantities of water for domestic <br /> use cannot produce adequate flows for fighting fires. In addition, fires commonly produce <br /> electrical outages that render pumps in wells useless for providing any fire fighting flows. <br /> Cluster Systems <br /> Although "cluster" wells are utilized in some places in the proposed service area, they are not an <br /> 8 <br />
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