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.• <br />Feature <br />Any other water supply well or buried <br />water suction pipe <br />Buried pipe distributing water under pressure <br />Building <br />Property line <br />The ordinary H ter Mark of: <br />Natural Envircir AkeQ and Streams <br />g Recreational Development Lakes and Rivers <br />General Development .akes and Streams <br />Wild River <br />Scenic River <br />Designated Tributari-a of Wild, Scenic, and <br />Recreational Rivers <br />Set back distance <br />in feet <br />20' <br />20' <br />201 <br />150'* <br />75'* <br />50'* <br />150'* <br />100'* <br />75' <br />Wetlands 75' <br />*Required for new developments and where practicable, for existing <br />I-velopments. <br />3. DESIGN AND CONSTRUCTION <br />A. The bottom of trenches and beds shall be at least three feet <br />above the water table or bedrock. <br />B. The bottom of the trench or bed excavation shall --vel. <br />The bott,.i and sides of the trench or 'A excavat-on to the <br />level of the filter material shall be z--arified to remove <br />smears left by the construction equipment and footprints. All <br />loose material shall be removed from the excavation The <br />bottom of the excavation shall not be driven on or walked on <br />aft r scarification. <br />C. When the soil percolation rate at the bottom of the trench or <br />bed is slower than 15 minutes per inch, no vehicle or excava- <br />• tion equipment shall be allowed on the trench or bed area. <br />Excavation shall be by back hoe or other means t-' t allow the <br />equipment wheels o., tracks to remain on the sur :� soil. <br />- 9 - <br />