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On-Site Inspection <br /> Mine 4 Bench <br /> Interim Stabilization <br /> - Short Term <br /> - Grade perimeter ditch to Sediment Pond 4-1 to insure positive <br /> drainage and eliminate ponding on pad. <br /> - Re-excavation of sediment basin, construction of additional <br /> sediment pond and/or installation of filter fabric sediment <br /> controls at base of mine bench, to control sedimentation from <br /> bench outslopes . <br /> - Demolition and removal of dilapidated structures and general <br /> clean up of pad surface. <br /> - Boundary markers clearly delineating approved disturbed areas <br /> for which the operator has reclamation responsibility under the <br /> MLRD permit and regulations need to be erected. Such markers <br /> are necessary for all disturbed areas within the Coal Basin <br /> permit area. Such markers are particularly critical in areas <br /> where "pre-law" disturbance areas for which the operator does <br /> not have reclamation responsibility are adjacent to areas for <br /> which the operator does have reclamation responsibility. <br /> - Longer Term <br /> - Revegetation of outslope based on current plan as modified by <br /> test plot evaluation results . Some debris clean up and slope <br /> modification will be necessary. Large boulders projecting from <br /> fill will present a problem as will large gullies - with <br /> respect to effective placement of mulch netting. These <br /> concerns would also apply to final reclamation. Reveg test <br /> plots on lower bench have been fairly successful . Much shorter <br /> slope length , less erosion and less rock and debris than upper <br /> bench outslopes . Short term testing (2-3 years) of alternative <br /> mulching , surface manipulation, and soil amendment treatments <br /> might be appropriate on this and similar sites if final <br /> reclamation is not required in the short term. <br /> - Possible consideration of 'terraces or benches on outslope. <br /> Would be a significant departure from current plan. Stability <br /> effects and benefits would have to be carefully evaluated. <br /> Road C (Mine 4 Road) <br /> Inspection of Road C began at its upper end at the Mine 4 upper bench and <br /> proceeded down to its junction with Road B, a short distance to the north of <br /> the crossing of the south fork of Dutch Creek. Certain maps and plans <br /> contained in the permit document were utilized during the inspection and in <br /> the preparation of this summary report, including "Haul Road C Drainage Plan" <br /> (II-B-App. 7-Att. 2 , Plate 3) and maps and road logs prepared by Geo Hydro <br /> Consultants based on an extensive geotechnical investigation they performed in <br /> 1983. The Geo Hydro maps are entitled "Configurations and Geotechnical <br /> Conditions - Haul Roads" . Road C is currently classified as a light use road <br /> and the majority of recommendations below are based on the assumption that <br /> light use status would be retained. <br /> -3- <br />