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reclaimed and no further reclamation activities are scheduled. • The subject culverts have functioned for a number of years with little or no maintenance and redisturbance of the associated areas to remove the culverts is not justified. 6. The curve number of 62 was established by SCC and approved by the Division in previous submittals. Almost all vegetation studies in the Seneca II mine reclaimed areas which are 3 years or older, have indicated a total vegetative cover greater than 70$. Reclaimed spoil areas where infiltration rates are typically high correlate to a hydrologic soil group of B. With 708 or greater herbaceous cover and a B type soil, SCS tables indicate a curve number of 62. Attached to these responses is a copy of the SCS table from TR-55. In addition, some of the Seneca II reclaimed areas which have been reclaimed for a number of years have been subjected to storm events greater than the 10-year, 24-hour event. The designed postmining channels in these reclaimed areas passed the runoff flows with adequate freeboard and without excessive erosion, effectively verifying the design methodology and assumptions. 7. The areas mentioned are not completely disturbed as indicated on the map. Only a small portion of these areas is actually disturbed and SCC considered the disturbed areas insignificant. In order, however to maintain consistency with design assumptions, the curve numbers for these areas have • been adjusted to reflect disturbance areas. 8. Refer to the response for item number 4. Also, the corral area is on the east side of the road between culverts 3A and 18A which has no affect on SIIPM-1. 9. Similar to the discussion provided in the response to item number 6, total cover in this area is greater than 708 and a curve number of 62 is justified. 10. The Division is correct that the limiting velocity for the yQ.q- a ion-tin .d channels is 5 fps. The text, however, reads 'for newly deigned channels, if the velocity is less than 6 fps, the channels will be gravel-lined'. The limiting velocity for gravel-lined channels is 6 fps, above which riprap will be required. 11. The spillway for the PeCoCo impoundment discharges to a natural drainage that previously carried runoff from essentially the same drainage area to Little Grassy Creek. Given that drainage area, volume, and velocities have not changed significantly and have, in fact been buffered by the impoundment, the existing drainage should adequately handle discharge flows. The spillway for the Wadge impoundment discharges directly to Grassy Creek. . 12. Since installation of culvert 2A, the culvert has functioned as designed with little or no maintenance. Replacement of this