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Page 3 of 5 <br />the drainage from impacting the proposed DWDA. Additionally, it appears that the proposed <br />location of ditch D49 pre- disturbance goes up- gradient at the upper section. Does NECC plan <br />on cutting the slope back or cutting the ditch deep enough to allow flow down the drainage <br />and into ditch D49? <br />NECC: Please see new D49 Typical section on Map 14. A 10' wide by 4' high berm (minimum) <br />will be constructed between D49 and the DWDA diversion ditch. At the beginning of D49 <br />there is a 6' berm, plated with riprap which will provide adequate protection to keep the <br />diversion ditch within its channel bank. <br />Division: It does not appear that Map 14 contains a typical section for D49 as stated in the NECC <br />response. There is a cross section for D31, but it is not stated that this is also representative of <br />the section for D49. Regardless, a section does not provide the detail needed to illustrate the <br />design of the upper end of this ditch; this design must direct flow away from the proposed <br />DWDA. Furthermore, the berms that are described should be shown on Map 14. <br />8. During the Division's May 1, 2012 inspection, it was observed that access roads may be <br />needed to perform maintenance on ditch D49 and ditches along the western end of the <br />proposed West DWDA. Please add access roads or provide an explanation as to why roads <br />will not be needed to perform maintenance on these ditches. <br />NECC: A light use road has been added to provide access to the western end of the DWDA, please <br />see revised Map 12. <br />Division: It is not clear that the roads shown on Map 12 provide access to ditch D49 and ditches <br />along the western end of the proposed West DWDA. <br />9. The proposed roads on Map 14 in TR -65 require clarification. In particular, the roads needed <br />to build the proposed DWDA and the Soil Storage Stockpile may have to be altered from the <br />submitted map. It is unclear how these features will be constructed. <br />NECC: The road up to the fan will be changed to a haul road designation to allow for better access <br />to the DWDA for construction. Please see revised Map 12. In addition, a light use road will be <br />added between the soil stockpile and containment area no. 2 in order to provide access to the <br />western end of the DWDA. Two access roads will be used to build the subsoil piles. <br />Division: Response is sufficient. <br />10. Please connect ditch D28 to ditch D31 or explain why ditch D28 flows to Containment 91, <br />where it is co- mingled with runoff from disturbed areas. Perhaps ditch D28 should be <br />connected to ditch D34b. <br />NECC: The flow path of D28 prior to the submittal of TR -65 was for the runoff to be passed <br />