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CASE # Q <br />MSS PRCIGRAM REQUIRED UPDATES <br />I3y: Leonard Linton, .Civil Engineer II <br />History: <br />Staff presented a history of Ramsey's involvement in the MS4 program at the January 2009 <br />Public Works Committee Meeting. The MPCA was reviewing our 200b permit applicatian at <br />that time and staff wanted Council to be aware of the process. Our application was put on public <br />notice by the MPCA in February 2009 for 30 days. We received one comment. an our plan and it <br />was related to sentence structure on two of the best management sheets. Staff has corrected and <br />re-submitted the sheets. <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 in 2008 requires all future developments to limit the peak rate of runoff to 7S% of <br />the pre-development rate. The MPCA indicated this is a step in the right direction; however, <br />volume control rxiust also be addressed. Staff has been reviewing volume control strategies <br />adapted by watershed districts in Minnesota and will be bringing options forward_at a future <br />_ _ __ <br />meeting for review and discussion. <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 />The Lower Rum River Water Management Organization is revising their Surface Water <br />Management Flan and staff would like to incozporate the LRRWMO 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 />Ramsey Requirements: <br />The City needs to adopt several ordinances: <br />An Illicit Discharge and Detection Ordinance -this relates to finding and eliminating <br />non-stormwater flows entering the storm sewer system, wetlands, lakes and rivers. <br />A Past Construction Discharge Ordinance -the .City has adopted Chapter 9.27 Storm <br />Water Pollution Control which covers mast of the necessary requirements. This <br />ordinance will need to be updated with the infiltration requirements and the 7S% pre- <br />development rate requirements. <br />These ordinances will need to be referenced in the MS4 plan reviewed by the MPCA. <br />Recommendation: <br />-197- <br />