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REFUSE PILE DITCHES <br />• <br /> SUMMARY TABLE <br />Ditch Section Length Slope Shape Side Slopes <br />9-D10 A 700 ft. 6.3$ Trapezoid 3:1 <br />9-D15 A 130 ft. 1.0$ Triangular 4:1 <br />9-D15 B 275 ft. 7.0$ Trapezoid 3:1 <br />9-D15 C 300 ft. 2.0$ Triangular 4:1 <br />9-D16 A 500 ft. 1.0$ Triangular 4:1 <br />9-D16 B 600 ft. 2.5$ Triangular 4:1 <br />9-D17 A 680 ft. 2.2$ Triangular 3:1 <br />9-D18 A 300 ft. 1.0$ Triangular 2:1 <br />9-D18 B 1450 ft. 1.0$ Triangular 3:1 <br />All ditches are designed for a 100-year/24-hour storm event. For <br />this area, this is 2.3 inches. Design is based upon final <br />configuration of the refuse pile and its associated drainage areas. <br />• <br />• <br />Exhibit 18 <br />Revised 12/8/89 <br />-230- <br />