CCP 05-12-1997 - Laserfiche WebLink

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I I. The project costs for the Alternate B sanitary sewer improvements are estimated at $140,000, as presented in the cost tabulation section of this report. I I Watermain I The proposed watermain improvements are presented on Exhibit 6 and include the removal and replacement of the 12-inch watermain loop along the northerly boundary of the Phase II and Phase III development parcels. The need for this replacement comes as a result of the regrading of the I Phase II through IV parcels to create buildable areas for development. The areas overlying the existing watermain would be cut from four to sixteen feet, requiring the watermain to be I reinstalled with adequate ground cover to prevent freezing during winter months. I The new watermain would be installed within the street right-of-way adjacent to the Minnesota Transfer rail spur. Installation would also include up to to six 6-inch to S-inch watermain tees to I accommodate any internal looping of watermain, hydrant coverage, or pressure requirements within each parcel, as imposed by the Chief of the Lake Johanna Fire Department. These stubbed I. services would also be designed to provide watermain pressure and flows sufficient to meet the fire-flow requirements of each individual business. Should sanitary sewer Alternate A be utilized, I it is recommended that the existing 8-inch watermain, adjacent to the IS-inch RCP trunk sewer, remain in place until the development of the southerly parcels within the GBD. I The estimated project costs of these watermain improvements are $143,000, as presented in the attached cost tabulation section of this report. I Storm Drainage I The City's storm drainage requirements within the development consist of removing runoff from I the public right-of-way, routing the runoff through storm water ponds, and providing adequate storage necessary to limit the overall development's discharge rate flowing into MnDOT's storm I water conveyance system to current discharge conditions. Recommended improvements include the construction of a storm water detention pond, installation of approximately 4,400 linear feet I of RCP storm sewer ranging in size from 15 to 30-inch, catch basins, manholes, outlet control, ditch grading, and erosion control measures. Exhibit 7 presents the anticipated storm sewer I- improvements, including a possible storm water detention pond located south of the intersection of West Round Lake Road and 13th Street NE. This proposed location was selected as it lies I partially within the NSP power line easement which runs along the western portion of the lots FEAS.520.089 -6- 520-089-10