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DRAFT - MARCH 6, 1998 <br /> Watermain services will also be provided to the two proposed Tourville <br /> properties, located in the northwest corner of Parkview Addition. <br /> There are two alternatives for construction and extension of the watermain <br /> through Parkview Addition. The alternatives are as follows: <br /> 4.2.1 Alternative 1 -Loop Watermain With Dead End At Senior Housing <br /> and Loop the Watermain Within the Development <br /> Alternative 1 is shown in Exhibit 5. The watermain within the <br /> development would be the same as described above, but the watermain <br /> would not dead end at a hydrant east of Centerville Road or a hydrant at <br /> Park Terrace. Instead, the 8 -inch PVC watermain on Park Terrace <br /> would be extended to the west then 12 -inch PVC watermain would run <br /> north on Centerville Road. This watermain would connect to the <br /> watermain on Parkview Road with a tee, and extend north to connect to <br /> the existing watermain constructed with Chauncy Barrett Gardens. <br /> 4.2.3 Alternative 2- Extend the Watermain South On Centerville Road To <br /> Center Street <br /> Alternative 2 is shown in Exhibit 5. This alternative must be constructed <br /> in conjunction with Alternative 1. Therefore, the watermain would be as <br /> described in Alternative 1, with one exception. The watermain west of <br /> Park Terrace would end at a tee on Centerville Road, and the 12 -inch <br /> PCV watermain would extend also south to Center Street. <br /> 4.3 Storm Sewer /Storm Water Drainage/Wetland Mitigation <br /> The proposed storm sewer is shown on Exhibit 4. Preliminary sizing of the <br /> storm sewer has a range of 15 -inch RCP to 24 -inch RCP. These sizes are <br /> subject to change depending on review of drainage calculations. <br /> Catch basins will be located at low points in the streets to collect stormwater. <br /> The storm sewer will be designed for a 5 -year storm, per City Ordinance <br /> requirements. A 36,400 square foot (.84 acre) stormwater pond is proposed to <br /> be located at the northeast corner of the plat. The overflow from the pond will <br /> run along the south end of the plat (within a 20 -foot drainage easement) to the <br /> ditch system along Centerville Road. <br /> Approximately 10,900 square feet of the existing wetland are proposed to be <br /> filled, and approximately 12,150 square feet are proposed to be mitigated. <br /> FEAS- 260.089 3 <br /> 260089m <br />