03/27/2013 Env Bd Packet - Laserfiche WebLink

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5.2.2 Marshan RMU Subwatershed Table 10. RMU Specific Actions: Marshan RMU Actions identified by Issue Category wiTrER RATE & QUA x Evaluate opportunities for volume reduction in key subwatersheds including MAR -0059, MAR -108 and MAR -110. Ensure that development and redevelopment construct onsite volume controls to alleviate the potential flooding without increasing downstream discharge of urban hydrology to Marshan Lake. Address impairments for Marshan Lake as identified in the TMDL study and in the implementation plan when this effort is completed. Maximize load reduction on city projects. Evaluate cost effective options to improve water quality treatment BMPs for both development and redevelopment projects to increase treatment efficiency beyond the minimum required. Promote the use of rain gardens, native plantings, and reforestation within existing development areas as a means of increasing infiltration, evapotranspiration, and filtration of runoff conveying pollutant loads to the lakes. Investigate the potential for expanding storage and nutrient retention /removal from the existing loads (prior to discha • in • to Marshan Lake ad'acent to the lower branch of 10 -22 -32 between I -35W and Lake Drive WETLAND MANAGEMENT , Conduct wetland restoration projects for banking in the upper branches of the 10 -22 -32 ditch system and in the large area in northwest Lino Lakes (the area generally located north of Carl Street and west of 4th Avenue) that is rimaril used for sod MAR -097 . Evaluate and address floodplain impacts with new and redevelopment proposals in accordance with watershed and city requirements. ,gg Collaborate with the RCWD to design culverts in catchments MAR -059, MAR -108, and MAR- 110 to resolve capacity issues in Anoka County Ditch 10- 22 -32. Review RCWD Consolidation Report for 10 -22 -32 to determine how much of a management plan the District has develo•ed to date. GROUNDWATER MANA ENT` No implementation activities identified. Provide an open space connection between Columbus and Blaine as identified in the DNR Metro Greenways corridor. Address corridor gap caused by habitat fragmentation from existing and planned housing and roads. Address gap through landscaping strategies, wildlife movement strategies, road design and minimal runoff, and homeowner education. EROSION AND SEDI s Evaluation of current stream bank erosion sites on 10- 22 -32. REGULATIONS, PERM! Complete Subwatershed Management Plan. Coordinate with future developers to implement cross - sections for Penoc Branch, Branch 14 Lower, and Branch 15 Lower into Resource Management System plan. No implementation activities identified. ' N, I No implementation activities identified. No implementation activities identified. City of Lino Lakes SWMP 1 February 8, 2013 Draft 1 76 • • •