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<br />V-2 <br /> <br />. <br /> <br />permit the installation of valves for accurate control and metering of <br />flows. Furthermore, the existing gradients establish unfavorable <br /> <br />hydraulic characteristics in the lines. These 1 ines should be re- <br /> <br />placed, rerouted. and buried with four feet of cover minimum. <br /> <br />TREATMENT FACiliTIES <br />The treatment facilities include a settling basin and chlorinator. <br />The settling basin is a covered semi-buried concrete structure. <br /> <br />, <br /> <br />The structure has two inlets, one for each of the 8-inch raw water <br /> <br />lines and one outlet for an 8-inch treated water line. There is no <br /> <br /> <br />drain, bypass or shutoff valve for the inlets or outlet. The basin <br /> <br /> <br />detention time is approximately 10 minutes and this is not considered <br /> <br /> <br />sufficient for adequate settlement to take place; and therefore, the <br /> <br />structure is actually only serving as a collection basin. <br /> <br />. <br /> <br />Due to the hydraulics of the structure, it is highly unlikely that any <br /> <br />settling takes place. In any event, it is impossible to monitor, <br /> <br />control, bypass or in any way service this structure. However, with <br /> <br />improvement of the spring boxes to include sediment catchment and <br /> <br />new water lines, the need for this sedimentation structure would be <br /> <br />reduced considerably. <br /> <br />l. <br /> <br />-----~~- <br /> <br />. <br />