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• CAMEO REFUSE DISPOSAL AREA No. 1 (CRDA 1) <br />Drainage for the CRDA 1 consists primarily of collection ditches leading up the <br />side of the pile. Due to the small area, approximately 2.8 acres, a diversion <br />above the pile was not installed prior to construction. Exhibit 96 shows the <br />details of drainage around this pile and Appendix 13-2 has the 100 year, 24 hour <br />precipitation event design for the SE collection ditch and the NW collection ditch. <br />These collection ditches direct runoff into Pond 6. Upon completion of these <br />collection ditches, drainage from above the pile will be diverted around the pile. <br />The SE collection ditch design includes a culvert where Haul Road 5 leads onto <br />the pile. Two culverts formerly draining across this access road have been <br />eliminated by Public Service Company as part of MR-12. In cooperation with <br />Public Service's letter in Appendix 13-7, drainage design and maintenance on <br />the south side of Haul Road 5 will be left up to Public Service as part of their ash <br />dump drainage. <br />• Areas of alternate sediment control are listed in Table 13-5 and include straw <br />bale and dirt berm dikes placed around reclaimed topsoil stockpiles 5 and 6. <br />These stockpile areas were regraded and seeded in 1994. As of May 2001 the <br />vegetation on these two areas are adequate to control erosion, see appendix 14- <br />6. <br />NORTH DECLINE <br />During the reclamation phase of the North Decline area the east and west <br />diversion ditches will continue to be used to divert unaffected runoff around the <br />reclaimed area. The intermittent stream channel was reestablished as a wide <br />rip-rapped channel. Pond 7 was enlarged to accommodate more of the <br />reclaimed area drainage east of the channel. Shallow depressions, the East and <br />West Sumps, were excavated for alternate drainage control east and west <br />13-10i (Rev. 12/02) <br />