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<br />21st AVENUE <br />STREET AND STORM SEWER IMPROVEMENTS <br /> <br />CITY OF L1NO LAKES, MINNESOTA <br /> <br />Project History <br /> <br />This feasibility report is for the construction of storm sewer and road <br />improvements to serve the area west of 1-35E, from Main Street to approximately <br />900' south. This project is located in the east half of the west half of Section 24, <br />Township 31 N, Range 22W in Lino Lakes, Minnesota. The project area is shown <br />on the project location map, located in the Appendix of this report. <br /> <br />A feasibility report was prepared on January 26, 1998, and was later revised on <br />February 23, 1998, for construction of sanitary sewer, watermain, storm sewer, <br />and streets for all of 21 st Avenue from Main Street to Cedar Street. The <br />feasibility report did not include streets or utilities on Northern Lights Boulevard. <br /> <br />This project was initiated to address the transportation and storm sewer needs of <br />the Clearwater Creek Business Center plat. The plat area is zoned General <br />Business. Sanitary sewer and watermain was extended to serve this area in <br />1999 and included the installation of 21" trunk sanitary sewer and 16" trunk <br />watermain. A separate project, also in 1999, involved the installation of a lift <br />station and 12" forcemain to connect the 21" trunk sanitary sewer from its <br />terminus at the south end of Northern Lights Boulevard to the existing sanitary <br />sewer system located on Cedar Street, on the east side of 1-35E. <br /> <br />Proposed Improvements <br /> <br />1. Storm Sewer <br /> <br />, The stormwater drainage will be directed via storm sewers to a ponding <br />area to be located east of the roadway and adjacent to Clearwater Creek. <br />This ponding area will be discharged through controlled outlets or <br />overflows. The rate of discharge from the site will not increase, but the <br />total volume of discharge will. Design of catch basin spacing and outfalls <br />will be based on a 1 O-year storm event frequency per City requirements. <br />The proposed pond will also act as a buffer between developing sites and <br />the creek. Exhibit A illustrates the proposed improvements and is located <br />in the Appendix. <br /> <br />Additional storm sewer to serve the Amoco site was also included as part <br />of this study. Currently the drainage from the north half of the site drains <br />to a ditch along the south side of Main Street. This ditch is extremely flat <br />and does not drain properly. Storm sewer could be extended north on <br /> <br />12292-01 <br />