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Geotechnical studies referenced in Appen. 13-4 and 13-5. <br />CRDA-1--2:1 slopes with 10' benches on 30' intervals above the <br />first bench which is 50' high. Three subdrains installed <br />during initial construction. The outslopes of the fill are <br />considered to be the completed face between two benches. When <br />each new bench is constructed, the rough construction face <br />below that point will be completed by grading it to its final <br />configuration. Benches on CRDA-1 will be graded to the inside <br />at 2%-5%, and graded to drain to the sides at 2%-5%. CRDA 2 <br />similar with exception that underdrains not installed and <br />slope between benches not to exceed 2.5:1. <br />Reference on Page 13-22 to stability concerns at CRDA 1 <br />related to water levels in the pile. Reference to 1994 <br />stability analysis and additional 30 piezometers with critical <br />target depths defined. Reference Tab 18 and Table 18-4. <br />Table 13-4, List of drainage structures. <br />Pond 8 <br />Pond 9 <br />South Div. <br />Lower Catch No. 1 <br />No. 2 <br />Top of RSRDA drains <br />Above RSRDA Drain <br />Combined RSRDA drain <br />CRDA 1 <br />Ref. Exhibits 9B and <br />Pond 6, NW Collection <br />20 <br />Ditch <br />SE Collection Ditch HH, SE <br />bench drains (2% grade, 5% <br />EE, NW Collection Ditch GG, <br />Collection Culvert (30"cmp), <br />slope to inside). <br />CRDA 2 <br />Reference Exhibits 51, 53 and 55. Pond 10, Diversion GG, <br />West Collection JJ, East Collection JJ, East Collection <br />Culvert (30"cmp), bench drains (2% grade, 5% slope to <br />inside). <br />Appendix 13-2, Sediment Control Calculations <br />CRDA1-10--Collection Ditch EE. 21" deep, 2:1 side <br />slopes, 2.7" D50 riprap. Collection Ditch GG. 25% <br />slope, ditch 13" deep, 2' base width, 1:1 side slopes, <br />with 17.2" D50 riprap. 5% slope, ditch 18" deep, 2 foot <br />base width, 1:1 side slopes, with 3.2" D50 riprap. <br />Collection ditch HH, 2' base width, 1:1 side slopes, 15" <br />deep with 21.4" D50 riprap for 25% slope; 21" deep with <br />4" D50 riprap for 5% slope. <br />Ref. Ex. 20 <br />Ex. 22 <br />Ex. 20 <br />Ex. 20 <br />RSRDA <br />Ex. 20 <br />2, 8" min. <br />Appen 13-2, 12" min. <br />8" min. <br />RSS-7--North collection ditch on RSRDA, 1:1 side slopes, <br />1% grade, .8' min. depth. 100 yr. diversion--hill by <br />