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Dwe County ZNR Committee (continued) <br /> land drainage and road ditching which expanded the watershed area, greater <br /> su ace runoff is reaching the lake. Constructing year round homes and the <br /> a ociated impervious surfaces will exacerbate the high surface runoff problem. <br /> 3. Contaminated Surfacewater: A large construction site near the lake has the <br /> potential for causing damaging sediment and phosphorus runoff. Following the <br /> construction phase, impervious surfaces will continue to contribute contaminated <br /> stormwater. <br /> 4.1 Contaminated Groundwater. Since the USGS had determined that the prevailing <br /> gr undwater flow is from east to west, septic systems and holding tanks could <br /> th eaten a valuable source of spring flow to the lake. <br /> 5. Shoreline Development: Since the primary reason to purchasing lake frontage is <br /> p vate access to the resource, it is likely that the property owners will want piers for <br /> t dockage and shore angling. Extensive piers will Butter the shoreline and destroy <br /> s awning and nursery habitat for fish such as largemouth bass. <br /> Tpf Wells Dane County Executives Office <br /> Brian Standing Dane County Zoning Office <br /> Ron Grasshoff VVDNR SCR Water Reg. <br /> Bruce Moore VVDNR SCR Environmental Engineer <br /> JiM Leverance WDNR Lakes Management <br />