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F The following discussi~ of Colorado Yanrpa Coal Compa~fy's rill and gully plan is divided into two sections. The first section deals with excessive rill grid gully formation on reclaimed land while the secend portion discusses permanent drairrageways. EXCESSIVE RILL AND GULLY FORMAI'IGN ON RECLAIMED LAWD There are tt•~o components which are relevant to the discussion of rill ar~d gully formation on reclaimed land. Orie is the reclamation techniques currently utilized in the operation of Mines 1, 2, and Eckman Park. The second involves the mitigative plan for• the reclamation of excessive rills and gullies which ar•e riot part of permanent drainageways. Reclamation Plan: Soil Stabilization Techniques As outlined in considerable detail within Section 78C-18(b) of the C-81-C71 permit and in pages 780-25-1 through 7&G-129-4 of the Permit Renewal, several techniques are currently being used to minimize the formation of excessive rills and gullies. One important preliminary component of sail • stabilization is creating a suitable postmining topography. Colorado Yampa Coal Company's backfilling and regrading work has resulted ir, a postrniriir~g topography which approximates the preminirrg conditions and facilitates drair~aae across tf~e reclaimed land. However, irregardless of topography, newly topsoiled and seeded areas are normally prune to erosion due to the lack of well established vegetative and litter cover. Until an adequate ground cover is in place, other means of soil stabilization are necessary. The major portions of the soil stabilization plan include chisel plowing, seeding, and either contour furrow inscription or ripping of the reclaimed surface. Cnce the top=_oi 1 is r•eappl ied on the roughened graded spoi 1 , faun tt•actors are utilized to chisel plow the topsoil. Chisel plowing alleviates compaction caused by the scrapers and creates a bind between the graded spoil and topsoil. Such a boric eliminates the possibility of topsoil slippage and also tends to promote root penetration into the spoil. After ~~hisel plowing, the topsoiled areas are drill seeded with the appropriate • 78_p ..a _, _...., _ .