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<br />application. In addition, Map 4, Hydrology, shows only one ditch. <br />RESPONSE: <br />Hoth segments of Ditch H3 will be constructed according to the <br />design parameters set forth in Table 3 of Exhibit 3. Map 4a, Energy <br />Mine 3 Hydrology, has been revised accordingly, given the <br />constraints of scale. <br />2. What erosion protection is being utilized to protect the pond side <br />slopes at the point where the ditches enter the pond? <br />naownvne_ <br />The critical velocity used for evaluating erosion protection is <br />4.0 feet per second. The diversion ditches scheduled for rip-rap <br />lining are H-3, P-1 and P-2. The rip-rap in the ditches will extend <br />to the point where the ditches enter the impoundments. <br />3. The design values for tributary area, CN, and runoff, as presented <br />in Table 5, Culvert Schedule, Eor Culvert No. 1 do not agree with the <br />same values presented in Table 3, Diversion Ditch Schedule, for Ditch H2, <br />which runs through Culvert No. 1. This discrepancy needs to be <br />addressed. <br />RESPONSB: <br />Table Sa of Exhibit 3 has been revised accordingly. <br />4. The shape correction used in the design of Culvert No. 2 does not <br />-34- <br />