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Mayor and City Council <br />Page 2 <br />March 22, 1984 <br />The applicant's consultant estimated the required storage volume for <br />the proposed project was between 0.69 acre-feet and 0.82 acre-feet <br />depending upon the allowable rate of discharge from the pond. The <br />pond area as designed can store 2.19 acre-feet below elevation 902 <br />and 3.28 acre-feet below elevation 903. This leaves between 1.37 <br />acre-feet and 2.46 acre-feet of storage volume which could be used <br />for runoff from upstream portions of the drainage subdistrict. <br />The analysis concludes that the existing ditch drainage system <br />suffjripntly retnrda runoff ratee so as to preclude nny pear term <br />flooding problems. At such time as County Road I is upgraded and a <br />storm sewer is developed it may be necessary to expand the storage <br />volume of the pond area or increase the allowable discharge rate from <br />the pond area. <br />The existing St. Stephen Street right-of-way is not located so as to <br />allow its use for increasing significantly the pond storage volume. <br />A better option would be to investigate utilization of the area <br />between the proposed project and the Jackson and Groberg Street <br />intersection for additional ponding purposes. Therefore, it is <br />recommended to proceed with vacation of the street right-of-way as <br />proposed by the developer. The portion of the street right-of-way ' <br />easterly of the project area should be vacated as prescribed by City <br />code and/or State statutes. <br />JCJ/cl <br />i <br />