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TO: <br />FROM: <br />DATE: <br />::59i.4 <br />^ » <br />* <br />5Va <br />Mayor and City Council <br />Mark E. Bernhardson, City Administrat <br />February 25, 1991 Of J$gU <br />>10 <br />SUBJECT: Storm Water Management <br />■/> <br />Attachment: A. Storm Wate^ Management - Concept Review Dated <br />1/21/9.1 <br />ISSUE - <br />1. Determine if Council desires to undertake an overall storm <br />water management program. <br />2. Determine if Council desire to utilize alternative financings <br />to special assessment for storm water projects. <br />INTRODUCTION - At the Council's February 11, 1991 Council meeting <br />Attachment A was presented for Council consideration. Council <br />requested it be tabled until March 11, 1991. <br />DISCUSSION - <br />Issue #1 - Storm Water Management - The basis for Orono's <br />Comprehensive Plan was to reduce densities in the rural area <br />since developing at that density would not greatly increase non­ <br />point (storm water) pollution. This was selected because of the <br />concern that by eliminating the sewage point pollution problem <br />that they would create at least the same, if not a greater <br />problem, by increased density and therefore storm water run-off <br />that would eventually end up in the lake. Definitive technical <br />studies as to the specific run-off sources and amounts however, <br />were not performed. <br />Development of a storm water management plan for the community <br />would provide a more empiricial basis for the City's <br />Comprehensive Management Plan. In addition if the City were to <br />develop a storm water management plan for the City it could then <br />have it reviewed by Minnehaha Creek Watershed District and if in <br />accordance with their plan, the City could then take over its own <br />storm water management and Minnehaha Creek Watershed District <br />would no longer be involved in approving such plans unless they <br />were amendments to the storm water management plan. It is <br />anticipated that a storm water management study would cost <br />approximately $225,000 , the primary cost ^ being the <br />necessary elevation mapping of the entire comrauni-.y at 2 foot <br />contours. (It could be done over a 2-3 year period.) <br />It is anticipated that the plan would not only provide the <br />following: