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7 <br /> t� <br /> 100 YEAR N <br /> FLOOD <br /> b - <br /> 260' A <br /> Elevation <br /> �N�'Water <br /> B Floodplain <br /> 2500 <br /> A CALCULATION B CALCULATION <br /> a. 250' LINE a. 250' LINE <br /> b. 130' FLOODPLAIN b. 130' FLOODPLAIN <br /> c. 140 - 130 = 10 c. 150 - 130 = 20 <br /> d. 10/250 = 0.04 d. 20/250 = 0.08 <br /> e. 0.04 X 100 = 4 % SLOPE VALUE e. 0.08 x 100 = 8 % SLOPE VALUE <br /> SLOPE VALUE LESS THAN 7.5% = SLOPE VALUE GREATER THAN 7.5 % _ <br /> STREAM BUFFER = 50' + 15' = 65' TOTAL STREAM BUFFER = 50' + 30' = 80' TOTAL <br /> (TO BE ADDED TO EXISTING FLOODPLAIN) (TO BE ADDED TO EXISTING FLOODPLAIN) <br /> Created by Bettina Brinkley ATTACHMENT A <br /> Orange County Planning <br />