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Effective April 28, 2015 Chapter Four Subsurface Sewage Treatment System Regulations <br />23.10 Setback Requirements <br />Table XII <br />Setbacks to Physical Features <br />Setback Distances in Feet <br />Surface <br />Incorporated <br />Application <br />within 48 <br />Injected <br />hours <br />Private drinking water well <br />200 <br />Public drinking water well* <br />1000 <br />Irrigation well <br />50 <br />25 <br />25 <br />Occupied building (residences) <br />200 <br />200 <br />100 <br />Residential developments <br />600 <br />600 <br />300 <br />Commercial subdivision <br />600 <br />600 <br />300 <br />Recreation area <br />600 <br />600 <br />300 <br />Public contact sites <br />600 <br />600 <br />300 <br />Property line <br />50 <br />50 <br />50 <br />Road right-of-way <br />50 <br />50 <br />50 <br />Down gradient lakes, <br />rivers, streams, <br />Slope 0 % to 6 % <br />200 <br />50 <br />50 <br />wetlands, intermittent <br />streams, or tile inlets <br />Slope 6 % to 12 % <br />Not Allowed <br />100 <br />100 <br />connected to these <br />surface water <br />Winter (0 % to 2 %) <br />600 <br />Not <br />Not <br />features**, and <br />Applicable <br />Applicable <br />sinkholes <br />Grassed Water Ways*** <br />Slope 0 % to 6 % <br />100 <br />33 <br />33 <br />Slope 6 % to 12 % <br />Not Allowed <br />33 <br />33 <br />Shoreland Area <br />Not Allowed <br />Not Allowed <br />Not <br />Allowed <br />*There may be special requirements if the land application site is within a wellhead protection area. <br />"Intermittent stream means a drainage channel with definable banks that provides for runoff flow to any of the surface waters <br />listed in the above table during snow melt or rainfall events. <br />***Grassed waterways are natural or constructed and seeded to grass as protection against erosion. Separation distances are <br />from the centerline of grassed waterways. For a grassed waterway which is wider than the separation distances required, <br />application is allowed to the edge of the grass strip. <br />85 Washington County Development Code <br />