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RECOMMENDATION <br />The staff recommends that the Board of County Commissioners <br />and the Planning and Zoning Commission direct staff to <br />initiate a zoning code amendment prohibiting stormwater <br />discharge ,from single-family lots to abutting property and <br />requiring submittal of conceptual drainage plans in <br />conjunction with building permit applications when deemed <br />necessary by the public works director. <br />Director Davis felt the problem is apparent with the <br />new increased height requirements for septic tank <br />installation and the Health Department requirements for <br />maintaining a certain elevation between the bottom of the <br />drain fields and the wet season ground water table. In <br />addition, the flood plain management is requiring a <br />single-family home, or any dwelling, to have a minimum soil <br />elevation. These requirements have put the County in a <br />position where old development is sitting down much lower <br />than new development and the Board needs to decide whether <br />or not we want to get into regulating stormwater runoff from <br />single-family lots. <br />Director Davis advised that staff's recommendation <br />provides some flexibility which will allow a developer or an <br />individual homeowner to come up with some way to mitigate <br />stormwater runoff. <br />Commissioner Scurlock asked what the current elevation <br />is, and Mike Galanis of Environmental Health reported that <br />the State has advised that the liquid which comes from a <br />septic tank drain trench must be maintained two feet above <br />the wet season water table. When they say 36" above the <br />crown of the road for the top of the septic tank, they are <br />simply giving an easy reference in order to control the <br />height of the drain field. He noted that in February, 1985, <br />the requirement of 12" above the wet season water table was <br />increased to 24". <br />5 <br />T 311985 Boa 591 <br />