ENFORCE31043 - Laserfiche WebLink

Home Browse Search

lone per minute, or 43,200 gallons per day, the detention time in the ponds should be adequate. The seepage control and treatment system described above could be considered a long term plan although it may be difficult to operate the system effectively during the winter. Because of potential problems with the system during the winter months Snow- masa is planning to attempt to draw the water in the mine down below the portal elevation by pumping it from the mine through an existing bore hole. If the water can be drawn down during the summer months and allowed to fill again each winter then the problem with treating the water during the winter will be solved. Another less attractive plan would be to grout the portal area in hopes of cutting the water off permanently however this option hae not been Pully explored. If the effort to draw the water in the mine down is unsuccessful, then the water treatment and control system will be revised so it will function properly during the winter months. This will in- volve at a minimum, burping pipes and changing the pond overflow piping systems. The drip feed system will also either be moved into the east portal or covered and heated. RBCLAMATION Reclamation of the disturbed areas will occur after Snowmasa is relieved of its responsibility to treat the mine seepage water. The following table lists acreages which were disturbed in order to control and treat the mine seepage: AREA No. 1 Mine Portal Area Road Across Site Treatment Pond Area Material Stockpile Area Pipe Corridor (future) ACEES DISTURBHI e.2 0.7 1.0 0.2 0.2 TOTAL 2.3 Reclamation of these areas will be accomplished by doing minor grading work, covering the areas with topsoil obtained from the stockpiles along the haul road to the old truck dump area and seeding and mulching the areas in accordance with our mining per- mit.