2007-07-26_AgendaPacket - Laserfiche WebLink

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_v _ ___. _ -___ -- For example, increased infiltration of - ~ '~ s,: ~-,,~ - ` ~ stot~nwater into shallow groundwater ~:-~. `~ , ~i; ,.~ ' ~~ ~ ~. ' ~~. - l~ could result in higher base flows in _ _ ~. - - - streams; or, tncreased groundwater withdrawals could result in lower base flows in streams. The RWMWD is not aware of any areas of high groundwater recharge or groundwater withdrawals Stormwater is directed ro this cul-de-sac in or near RWMWD that could impact where it is infiltrated thro~trgh pavers and groundwater-surface water interactions in saz,d into the groztrad. RWMWD. However, it is important that the RWMWD considers possible impacts of proposed projects on groundwater-surface water interaction (i.e., creek flows). The RWMWD will pursue the following actions: Continue to review implementation of the Ramsey and Washington County Groundwater Plans and participate in collaborative efforts to assure the safety of groundwater resources within the RWMWD Evaluate possible RWMWD program changes to address groundwater contaminants in the special well constt-uction area (SWCA) Review groundwater research and reports applicable to RWMWD to identify potential future roles and activities for the RWMWD (e.g., data collection) Gather and review existing data and research regarding pollutants (e.g., road salt) entering shallow groundwater through infiltration. Revise the RWMWD infiltration standards (as necessary) to address any contamination concerns, especially in drinking water supply management areas Collaborate in new groundwater research, as needed Use available information and guidance (e.g., Minnesota Department of Health guidance) to evaluate potential impacts of stormwater infiltration BMPs on groutdwater • Communicate with local governments regarding the location of existing and proposed infiltration basins and potential impacts on groundwater supplies Provide new funding to the well sealing cost-share program if new information indicates a need far RWMWD incentives and assistance Collaborate with cities in preparing and implementing wellhead protection plans Develop and implement methods/programs for measuring, tracking, and reporting progress towards meeting groundwater protection goals • Participate in local and state agency permitting and planning programs, as appropriate (e.g., MN DNR water appropriations permit applications) www. rwmwd . o rg The District collaborates with cities, counties, and other agencies on groundwater initiatives that effectively manage and protect groundwater. The District's permitting program and projects protect groundwater. ~ -- , _ _ _ ~c~ ~ .Precipitation e • ~~. ' . ~l'-~._5 ~~~ Evaporation ~ Transpiration; -_• Infiltration-`°' Rb '~ e-`r Gro~~awater qow '' The hydrologic cycle begins with the evaporation of water from the surface of large bodies of water. As moist air is lifted, it cools and water vapor condenses to fom~ clouds. Clouds then release the moisture as precipitation. Once the water reaches the ground, some of the water may evaporate back into the atmosphere, or the water may penetrate the surface and become groundwater. Over time, groundwater either seeps its way into lakes, rivers, and streams, or it is released back into the atmosphere through transpiration. The balance of water that remains on the earth's surface is runoff, which. empties into lakes, rivers, streams, and, eventually, oceans, where the cycle begins again. :Generally, contaminants enter groundwater when polluted ntuoff infiltrates the ground. Page 12