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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 />Geography <br />The topography included in the proposed service area varies from an <br />elevation of 6650 feet along the Plum Creek low areas to higher mountain <br />elevations of 7600 feet. <br /> <br />The Castle Rock weather station records an average precipitation of about <br /> <br /> <br />13 inches per year. Runoff and infiltration from the precipitation in the <br /> <br /> <br />Larkspur area flows into Plum Creek as surface runoff or groundwater, <br /> <br /> <br />The Creek exhibits intermittent flow characteristics with some stretches <br /> <br />being dry and others flowing. <br /> <br /> <br />The hydrogeologic characteristics of the bedrock acquifers underlying <br /> <br /> <br />the area have been investigated and described by the Water Resources Division <br /> <br /> <br />of the Colorado Department of Natural Resources in a 1976 report. The report <br /> <br /> <br />is particularly helpful in attempting to determine the optimum location, <br /> <br /> <br />depth and development of ground water wells from the bedrock acquifiers, <br /> <br /> <br />and has been used as a guide in this study. <br /> <br /> <br />Existing Water/Wastewater Services <br /> <br /> <br />Virtually all of the water and wastewater systems in the Larkspur <br /> <br /> <br />community consist of individual wells and septic systems. Most of the wells <br /> <br /> <br />are very shallow - as little as 12 feet deep. Some of the households use spring <br /> <br /> <br />water which surfaces just below the AT & SF Railroad tracks. A number of the <br /> <br />shallow wells have run dry this past summer forcing the residents to rely on <br /> <br />neighbors or to import bottled water. <br /> <br />The close proximity of a number of shallow wells and an equal number of <br /> <br />sewage septic systems create a potentially dangerous situation. The usual high <br /> <br />groundwater levels in part of the Larkspur area aggravate the danger by increasing <br /> <br />5 <br />