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--- Cyprus Empire Corporation --- <br />• <br />NOTE: THE CREST STAGE OF THE EMERGENCY SPILLWAY IS HIGHER THAN THE PEAK STAGE <br />OF THE POND. THERE WAS NO FLOW THROUGH THE EMERGENCY SPILLWAY. <br />******************************************************************************* <br />* <br />* JUNCTION 1 , BRANCH 1 , STRUCTURE 1 <br />* DRAINAGE TO POND 9-P5 <br />* POND STRUCTURE INFORMATION <br /> <br />* ***********************************************,t******** ********************** <br /> <br />* Time Increment of the Routed Hydrograph = 0.10 hours <br />* Dead Space of Permanent Pool = 20.00 $ <br />* Number of Continuous Stirred Reactors = 2 <br /> <br /> <br />* PRINCIPAL SPILLWAY #1: TRICKLE TUBE INPUTS <br /> <br />* Barrel Diameter = 6.000 inches <br />* ~ength of Pipe = 40.000 feet <br />* Manning~s N = 0.025 <br />* Stage of the Principal Spillway = 3.750 feet <br />* Pipe Slope = 1.000 $ <br /> <br />* RIPRAP EMERGENCY SPILLWA Y INPUTS <br /> <br />* Crest stage of the Emergency Spillway = 5.000 feet <br />* Crest Length = 35.000 feet <br />* Width = 10.000 feet <br />* Outslope factors: <br />* Slope = 7.00 $ <br />* Side Slope Ratio = 2.50:1 <br />* Safety Factor = 1.10 <br /> <br />********************************************** *********** ********************** <br />• <br />Exhibit 18 Revised 12/8/89 <br />-81- <br />