11/30/2011 Env Bd Packet - Laserfiche WebLink

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Policy: Conduct conveyance and floodplain analyses. • 4.6. Groundwater • • Issues Benefits attributed to wetlands include floodwater storage and retention, nutrient assimilation, sediment entrapment, ground water recharge, low flow augmentation, shore land anchoring and erosion control, aesthetics, and recreation and education. Additionally, stream down - cutting and ditching have lowered ground water levels, leading to the seasonal dry -down of the upper wetland substrates. This allows for decomposition and the liberation of nitrogen, phosphorus and other nutrients that are typically organically bound and held tightly under submerged, saturated and anaerobic conditions. The resulting increases in sediment, salt and nutrient loading from decomposed wetland soils and from surrounding degraded uplands have caused a shift in City wetlands to vegetation types adapted to these conditions. Goals & Policies Goal: Use the natural characteristics of the City's watersheds (e.g., pond, swales, wetlands) in combination with development standards and projects, to reduce present and future flood damages and enhance the quality of surface and ground water. Policy: Preserve ground water recharge areas in cooperation with Anoka County. Policy: Establish standards for storm water runoff quantity from new and re- developments consistent with RCWD, VLAWMO and NPDES Phase II requirements. Policy: Currently, the City is entirely within the legal jurisdiction of RCWD and VLAWMO, which have WCA and water resource permitting programs. The City will remain under RCWD and VLAWMO permitting jurisdiction. The City will coordinate its NPDES Phase II responsibility with the RCWD and VLAWMO permitting programs while understanding that ultimate responsibility for implementation of such a program remains with the City. RCWD Goals: Incorporate ground water considerations into the decision making process with mindfulness of the interconnectedness of water and water dependent natural resources. RCWD Policy: Continue to evaluate and monitor County Groundwater Plans and participate in collaborative efforts to manage groundwater resources. RCWD Policy: Collaborate with other Metropolitan watershed districts with volume control requirements to develop a consistent message for managing groundwater concerns due to infiltration. RCWD Policy: Achieve a better understanding of local surface and ground water dynamics and interactions. RCWD Policy: Guide the use of stormwater infiltration BMPs in sensitive areas such as DWSMAs. City of Lino Lakes SWMP I October 2011 13