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• <br />Lower Rum River Watershed Management Organization <br />Andover-Anoka-Coon Rapids-Ramsey <br />2015 First Avenue; Anoka, MN 55303 <br />To: <br />From <br />Dater <br />Re: <br />Lower Rum River Water Management Organization <br />Barr Engineering Company <br />September 18, 2006 <br />Permit #2006-22: Minnesota Water Jet: Ramsey <br />We have received plans and a LRRWMO permit for the Minnesota Water Jet project to be located east of <br />Azurite Street approximately 300 feet south of Sunwood Drive in Ramsey. The site is 2.0 acres in surface <br />area. <br />The plans show that storm water from the site is to be conveyed to a storm water management basin to be <br />constructed north and east of the site. This basin is to provide storm water management for this site and the <br />• City owned property to the east. The basin has been designed to meet the LRRWMO stone water <br />management requirements. The 100-year frequency flood elevation of the basin, as calculated by Hakanson <br />Anderson Associates, is 878.3 M.S.L. The lowest floor elevation of the proposed structure is 885.9 M.S.L. <br />The basin outlet has been designed to provide skimming of floatable materials. <br />Erosion control is shown to be installed at the limits of construction. <br />It is our recommendation that the LRRWMO approve of the permit for this project subject to the following <br />conditions: <br />1. All erosion control measures must be installed at the initial stages of construction and be <br />maintained until all areas altered have been restored. <br />2. -Upon completion of construction and restoration of disturbed areas, the permit applicant is <br />responsible for the removal of all erosion control measures installed throughout the construction <br />site. <br />3. To minimize the potential of material from leaving the site and being tracked onto the roadway, a <br />rock filter dike being a minimum of two feet in height and having side slopes of 4:1 must be <br />constructed at the entryway onto the site. The rock filter dike will provide an erosion control <br />facility and also enable construction traffic to enter the site. <br />• 4. Street sweeping must be undertaken and completed on an as needed basis. <br />C:\Documents and Settings\sjankowski\Desktop\LRRWMO\2006 Petmit memos\Irr0622.doc -41rJ- <br />