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<br />I <br />I <br />. <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 />constructed improvements will be subject to inspection by the District. The costs of <br /> <br /> <br />such inspection shall be paid to tbe District prior to commencement of any <br /> <br /> <br />construction. Following the warranty period for the improvements, the District will <br /> <br />be given ownership of the improvements and will own and maintain such <br /> <br />improvements. <br /> <br />1. Raw Water <br /> <br />The water provided to Castle Pines North originates in underground aquifers. An <br /> <br />aquifer consists of layers of rock, sand or gravel deposits deep under the earth's <br /> <br /> <br />surface which store and yield large quantities of water. Raw water is currently <br /> <br /> <br />pumped to the 1.5 million gallon per day water treatment plant from three <br /> <br /> <br />nontributary wells completed into the Arapahoe aquifer. Those facilities are located <br /> <br /> <br />on Figure 2. Prior to this project implementation, those three wells provided a <br /> <br /> <br />combined flow rate of about 1050 gpm. The proposed project will increase the <br /> <br /> <br />combined flow rate from those wells to about 1500 gpm. Water rights have been <br /> <br /> <br />adjudicated from the various aquifers underlying the District boundaries and are <br /> <br />discussed in more detail in Section Ill. F. of this Feasibility Report. <br /> <br />2. Water Treatment <br /> <br />Water treatment is provided at the Central Water Treatment Facility prior to <br /> <br />distribution for potable use. At the plant, the water is aerated to oxidize the iron, <br /> <br />pre-chlorinated for secondary iron oxidation, then filtered through gravity flow, rapid <br /> <br />4 <br /> <br />Jehn Water Consultants, Inc. <br />