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<br />CASE # R <br /> <br />MS4 PROGR~M REQUIRED UPDATES <br />By; Leonard Linton, Civil Engineer 11 <br /> <br />History: <br /> <br />Staffpresenteda history of Ramsey'sinvolvement in the MS4 program at the January 2009 <br />Public Works Committee Meeting. The MPCA was reviewing our 2006 permit application at <br />that time angstaffwanted Council to be aware of the process. Our application was put on public <br />notice by the MPCAinFebruary 2009 for 30 days. We receivedonecornment on our plan and it <br />was related to sentencestx:u;ctureon two of the best management.sheets. Staffhascorrected and <br />re.submitted the sheets. <br /> <br />You may recall the major concern for Ramsey is the requirement to prevent discharges from new <br />development from reaching the Rum or Mississippi Rivers. The Surface Water Management <br />Plan adopted iI?- 2008 requires all future developments to limit the peak rate ofrunoffto 75% of <br />the pre.deve1opment rate. The MPCA indicated this is a step in the right direction; however, <br />volume control must also be addressed. Staff has been reviewing volume control strategies <br />adopted by watershed districts in Minnesota and will be bringing options forward at a future <br />meeting for review and discussion. <br /> <br />Staff has been reviewing the volume reduction plans for adjacent cities and is formulating a plan <br />for Ramsey. The MPCA has asked for Ramsey's plan for volume reduction to be ready by the <br />end of May 2009. <br /> <br />The Lower Rum River Water Management Organization is revising their Surface Water <br />Management Plan and staff would like to incorporate the LRR WMO requirements into the <br />Ramsey Ordinance. This provides a uniform set of requirements for developers and reduces the <br />number of-ordinance revisions required. <br /> <br />Ramsey Requirements: <br /> <br />The City needs to adopt several ordinances: <br /> <br />An Illicit Discharge and Detection Ord.inance - this relates to finding and eliminating <br />non-stormwater flows entering the storm sewer system, wetlands, lakes and rivers. <br /> <br />A Post Construction Discharge Ordinance - the City has adopted Chapter 9.27 Storm <br />Water Pollution Control which covers most of the necessary requirements. This <br />ordinance will need to be updated with the infiltration requirements and the 75% pre- <br />development rate requirements. <br /> <br />These ordinances will need to be referenced in the MS4 plan reviewed by the MPCA. <br /> <br />Recommendation: <br /> <br />69 <br />