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City of Arden Hills – 2040 Comprehensive Plan <br /> <br /> <br />Approved:, 2018 <br />13-4 <br />As part of the TCAAP redevelopment process, an AUAR was completed that <br />included an analysis of stormwater mitigation needs. According to the AUAR, <br />stormwater will be managed on-site, maintaining the current drainage patterns <br />and utilizing the current outfalls to Rice Creek and Round Lake. Stormwater will <br />be conveyed to Round Lake and Rice Creek by means of underground storm <br />sewer, ponds, vegetated swales, and wetlands. Conveyance systems will be <br />designed in accordance with acceptable industry standards and in conformance <br />with jurisdictional requirements. The primary method of stormwater treatment will <br />be the use of multiple ponds for the removal of total phosphorous and total <br />suspended solids. Water reuse, bio-filtration, filtration, and stormwater wetlands <br />are also suitable for treatment within the Study Area. No discharge water will be <br />directed to surface waters without prior treatment for water quality and a <br />determination that no contamination exists. <br /> <br />13.1.3.1 Stormwater Management Plan <br /> (Appendix F) <br /> <br />Arden Hills falls entirely within the Rice Creek Watershed District (RCWD), <br />which is the regulating authority for stormwater in Arden Hills. The RCWD is <br />responsible for administering the Wetland Conservation Act and related <br />permitting activities. <br /> <br />Regulatory agencies, including the RCWD and Metropolitan Council, share <br />Arden Hills’ view on the importance of protecting water quality and storm <br />water management. The City’s 2018 LSWMP discusses local methods to <br />further joint goals and policies regarding surface water management while <br />assessing problems and proposing corrective actions. The primary purpose of <br />the 2018 LSWMP is to: <br />o Assess existing water quantity and quality issues; <br />o Assess potential problems and opportunities for natural resource <br />enhancement in light of anticipated development within each <br />watershed; and, <br />o Formulate practical strategies to correct existing problems to prevent <br />potential problems and to take advantage of opportunities to enhance <br />water related natural resources. <br /> <br />In order to advance the above purpose statement, the 2018 LSWMP <br />reviewed the physical environment, performed water quality and hydraulic <br />analyses, established the objectives and policies, and set implementation <br />steps. In summary, the LSWMP objectives are to (Section 3 of the LSWMP): <br />o Improve water quality <br />o Prevent flooding and erosion from surface water flow <br />Dr <br />a <br />f <br />t <br /> <br />11 <br />/ <br />2 <br />0 <br />/ <br />2 <br />0 <br />1 <br />7