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5. The determination that a waterbody or stream indicated on a USGS Map or NRCS soil <br />survey map does not exist must be concurred by the NCDENR Division of Water Quality <br />and /or the US Army Corps of Engineers. <br />6. The Waterbody Buffer Zone shall be determined and clearly delineated on site prior to <br />any development or pre - development activity occurring in order to protect the required <br />buffer from encroachment or damage. No development, including soil disturbing <br />activities or grading, shall occur within the established buffer area. <br />7. The waterbody buffer shall be maintained as follows and shall be shown on all site plans <br />or subdivision plats related to the project submitted for review, including soil and <br />erosion control plans: <br />a. The size of a perennial stream or Class 1 waterbody buffer shall be measured <br />from the annual average stream bank, perpendicularly for a distance of 50 feet <br />plus 4 times the average percent of slope of area adjacent to the stream. This <br />slope shall be calculated by measuring a distance of 250 feet from the center of <br />the stream. The percent of slope for this distance shall serve as the determining <br />factor. However, the maximum distance shall not exceed 120 feet from the <br />edge of the stream. For Lakes, ponds or impoundments, the buffer shall be <br />computed using the high water elevation in place of the stream bank in the <br />calculation. <br />Attachment number 2 \n <br />G -4 Page 343 <br />