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Lower Rum River <br />Watershed anagement Organization <br />Stormwater Standards <br />Date o Ado 'on b....MO <br />March 15, 2018 <br />E ective Date <br />March 15, 2018 <br />Back round <br />Stormwater is an all-inclusive term that refers to any of the water running off the land's surface after <br />a rainfall or snowmelt event. Prior to development, stormwater is a small component of the annual <br />water balance. However, as development increases, the paving and compaction of pervious surfaces <br />increase stormwater runoff. It is important to manage this water because of the impacts it can have <br />on water quality, flooding, and groundwater recharge. The LRRWMO has goals of improving or <br />maintaining water quality, preventing future flooding problems, and encouraging groundwater <br />recharge. Therefore, the Lower Rum River WMO has minimum stormwater standards. <br />These standards were developed by a Technical Advisory Committee including representation from <br />each LRRWMO community, MN Department of Natural Resources, MN Pollution Control Agency, <br />MN Board of Water and Soil Resources, Metropolitan Council, US Army Corps of Engineers, MN <br />Department of Transportation, Anoka Conservation District, Anoka County Environmental Services, <br />and the Builder's Association of the Twin Cities. <br />Administration <br />These stormwater standards will be administered by both the LRRWMO and member cities. The <br />LRRWMO will apply these standards to their permitting program Each city must adopt standards at <br />least as protective as the LRRWMO standards in their local water plan and/or ordinances, and <br />implement them. <br />Applicability <br />LRRWMO Stormwater Standards apply to: <br />Projects that disturb/alter one acre or more, or are part of a common plan of development or <br />disturbs/alters one acre or more. <br />Definitions: <br />a e <br />hat <br />A common plan of development or sale is defined as a contiguous area where multiple separate <br />and distinct land disturbing activities may be taking place at different times, on different <br />schedules, but under one proposed plan. One plan is broadly defined to include design, permit <br />application, advertisement or physical demarcation indicating that land disturbing activities <br />may occur. <br />Comprehensive Watershed Management Plan <br />Lower Rum, River Watershed Management Organization <br />October 2011 (Ft' April ill <br />E-1 <br />