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South A pit North <br />Passible leachate <br />spillpoint during wet <br />periods to [opsand and <br />Ennis Draw alluvium <br />(premining pz. surface <br />was determined during <br />Laramie sandstone, ~_'__ '~~T.~ <br />siltstone shale ~-=~-;s_ ~~~~b''~~ <br />premining ~ ~ t~. ~•~ F _ r'-:,°~'~~^ <br />_' iezometnc -1 ~ J ~~ <br />D ~ ~ '~ ~ <br />surface of coal " _ ~f "-` ;:~~. <br />" ' ~! ~ ` ~ ~saturated,'spoh'Y ~ ` .. r <br />i}.. h~ ~_~.~. <br />(slotted <br />En-nisADraw <br />i to Ennis Draw <br />via coal seam <br />Ground water and <br />~ leachate flow direction <br />Topsand (is above groun0 <br />..:: i water) <br />Figure 1- Schematic cross-section through A pit showing two possible <br />flow pathways of ground water and leachate from backfilled pit to alluvium <br />in Ennis Draw. No scale intended. <br />P}}}}~ Alluvium, saturated with grountl <br />':1.1 water (and/or possibly leachate <br /> in future) <br />.+i?L• Alluvium <br />j SDOiI backfll, saturated <br />-',1 with leachate <br />L~~ 4 SDOiI backfll <br /> Laramie coal seam, <br />® saturated with <br /> iQar•n~ra <br />^ Laramie coal seam <br />T. F:aldenbach, 3/05 <br />