PERMFILE114868 - Laserfiche WebLink

Home Browse Search

717.1E Backfilling and Grading and Disposal of Excess Rock • 717.15 Backfilling and grading operations had been initiated at the Crystal Meadows waste disposal site as addressed in the General Comments section above. 71T.17 Protection of the Hydrologic System The area associated with the xater tank north of Highway 133 at the Hawks Nest East portal lacked sedimentation control measures as re- quired under this section. Violation Number 1 of Notice of Violation Number 79-~-3-23 was issued for the above condition. Although a culvert to pass the surface drainage from the water tank area under the diversion ditch, xhich diverts water from unaffected acreage away from the disturbed area, was planned, the culvert was not installed at the time of inspection. Arty surface drainage from the water tank area would enter the diversion ditch and be directed to the North Fork River without passing through a sedimentation pond. Construction of diversion ditches associated with both the East and West portal vas not totally completed at the time of inspection. Channel lining vas not addressed under the approved construction plans, but the company agreed that riprap would be placed in the bottom of the channel and the outside slopes graded and seeded in order to prevent additional contributions of suspended solids to runoff outside the • permit area. The discharge points of the diversion structure at the Rawks Nest East Mine did not contain devices to control erosion. Rills and gullies at the points where the diversions discharge into the North Fork River evidenced the absence of such devices. Violation Number 2 of Notice of Violation Number 79-V-3-23 was issued for the above condition. Violation Number 3 of Notice of Violation Number 79-V-3-23 was issued for failure to maintain access and haulroads as required. The culvert ,just east of Hawks Nest East portal and substation area which drains portions of those areas was partially blocked at the intake point on the north side of the highway. Sedimentation control measures at the time of inspection consisted of partially constructed diversion strvctures to convey overland floe away from disturbed areas, as addressed above as yell as stray bale dikes ad,]acent to the North Fork River between affected acreage and the river. The bales of straw are placed on the surface of the ground and anchored with roof bolts. A strip of affected acreage adjacent to North Fork River and east of the eastern permit boundary vas observed to have no sedimentation control for surface drainage from the area. The area is approximately 25 (twenty-five) feet vide and 300 (three hundred) feet long. At the • time of inspection, the area vas being utilized as an equipment/parts storage area. The company vas not certain what type of reclamation operations were planned for the erea. The area vas affected prior -2-