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Table of Contents <br />2 1 P ge <br />1:('qt: I'(;1WELL (",ItAVI: L I'll I. VI* I\ DI L SOL RAND I I <br />BY: GItEA 1'1'-AIN ENV[ RONN-U.NTAL AND AQU Y I I[ 5 — 6ti'1YW.G[tLA 1 [s:151,NI-NN 11.CC)'-1 <br />Introduction.................................................................................................................... 5 <br />Location, Attributes, and History .......................................................................5 <br />WaterResources................................................................................................... 8 <br />Soils, Geology, and Vegetation.......................................................................8 <br />Climate................................................................................................................... <br />11 <br />LandForm and Slope........................................................................................ <br />12 <br />Activity after 1995 and Current Condition ................................................... <br />16 <br />Storage and Stockpile Area........................................................................... <br />19 <br />Runoffand Erosion............................................................................................ <br />20 <br />CurrentReclaim.................................................................................................. <br />21 <br />Reclamation.................................................................................................................. <br />27 <br />Management/Interim Reclamation..................................................................28 <br />Topsoil Preservation and Use........................................................................29 <br />Slope....................................................................................................................... <br />30 <br />Stockpiles of Product and Overburden...................................................... <br />31 <br />Weeds and Temporary Seed Mixes.............................................................31 <br />Erosion Control - Water Quality................................................................... <br />34 <br />Management Summary ....................................................................................35 <br />FinalReclaim............................................................................................................35 <br />0 <br />Soils and Growth Medium...............................................................................35 <br />Erosion, Sediment Control, and Waste Rock Product .......................... <br />36 <br />Slope and Final Contours................................................................................37 <br />FinalSeed Mix..................................................................................................... <br />38 <br />Final Reclamation Summary ..........................................................................40 <br />Conclusion and Major Technical Revision Changes ...................................... <br />41 <br />Active and Future Mining and Reclaim of The Hill.................................41 <br />SeedMix................................................................................................................ <br />43 <br />Storage and Stockpile Area............................................................................ <br />43 <br />TotalActive Area................................................................................................ <br />44 <br />References.................................................................................................................... <br />45 <br />Appendices, A-I...........................................................................................................47 <br />Introduction to Appendices................................................................................48 <br />AppendixA....................................................................................................................49 <br />Reclamation Methods and Techniques...............................................................49 <br />Contouring and Earth Work................................................................................50 <br />Drainage and Erosion Control........................................................................... <br />55 <br />OneRock Dam (ORD)....................................................................................... <br />55 <br />RockMulch............................................................................................................ <br />57 <br />Erosion Control Blankets and Wattles........................................................58 <br />Waterbars on Disturbed Slopes....................................................................60 <br />OSummary <br />for Erosion Methods......................................................................61 <br />2 1 P ge <br />1:('qt: I'(;1WELL (",ItAVI: L I'll I. VI* I\ DI L SOL RAND I I <br />BY: GItEA 1'1'-AIN ENV[ RONN-U.NTAL AND AQU Y I I[ 5 — 6ti'1YW.G[tLA 1 [s:151,NI-NN 11.CC)'-1 <br />