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minor variations exist between the postmining topography as proposed in the <br />Permit and the existing postmining topography in parts of Pits 5 and 6. <br />Rockcastle will complete an engineering study identifying geotechnically and <br />geomorphically unstable areas of Pits 5 and 6 which do not conform to the <br />approved postmining topography. Based on the results of this study, Rockcastle <br />will implement additional reclamation measures to stabilize geotechnically or <br />geomorphically unstable areas of Pits 5 and 6. If additional reclamation <br />activities are required as a result of the engineering study of Pits 5 and 6, <br />and remain uncompleted at the time of final bond release pursuant to 5 V, the <br />cost of these uncompleted activities and associated liability will be taken into <br />consideration by the Division before the final bond release increment is returned <br />to Rockcastle pursuant to ~ V. <br />2. Rockcastle will reassess the geotechnical stability of the potential <br />slope failure area adjacent to the haul road to Pit 4. Based on this assessment <br />Rockcastle may s~id"!~]: implement appropriate reclamation measures to the extent <br />necessary to stabilize mass movement features related to the haul road to Pit <br />4 only in those areas that are not stable pursuant to 2 CCR 407-2 Rule 4.14.2. <br />w. .........:....., :. <br />a::::`~suz..a...'.:::e,`'ma:..:er:a:.:=S~una~ra::;:.:a :: e;'::a.::::....e::.::a;..:~:: <br />.u. A. ~~,. ~.w._. ~.~_.w.~..~..~.~..~m..~~~~..~._.~~~..:..~......~~.....:...~~ .....:..::.:...::::::..::::..::..:.:...::,:....... <br />3. To the extent possible and consistent with the postmining land use, <br />Rockcastle will remove culverts and other drainage and sediment controls upon <br />completion of the revegetation demonstration ~s~-;9e ~escrabed, in 4 III(2)~a) <br />-6- <br />