_INSPECTION - C1981018 (16) - Laserfiche WebLink

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June 25,2013 C-1981-018/Deserado Mine ZTT pipe that pumps water up to the pond that may have been the cause to the damp section of the embankment. B-Seam Dewating Pond pump was operating during the time of the inspection.Water was being pumped at approximately 143 gpm. The B-Seam Dewatering Pond consists of series of 6 primary ponds that leads into an artificial wetland before reaching a final pond called the Last Chance Pond.At the time of the inspection,water has only been pumped up to the 5th pond where it is then allowed to settle out.The water reaching the 5th cell was clear.Additionally,water had been recently pumped into the Artificial Wetlands section to help flush out the area. Water stayed within the wetlands section before settling out. The Last Chance Pond was dry. Ponds SS-1 and SS-2 collect runoff from the Slot Storage. Both ponds' primary spillways are trickle tubes. Spillway inlets were clear of debris with stable and vegetated embankments. Pond SS-1 held no water. Pond SS-2 held minimal amounts of water with no discharge. Ponds RR-1 and RRS-1 are located south of the railroad loop. Both ponds collect runoff and wash down water from the train loadout. Both ponds were stable.Both ponds were dry at the time of the inspection. All refuse pile ponds were inspected. RP-1 collects runoff from the reclaimed Refuse Pile 1. RP-1 was dry and well vegetated. The riser pipe primary spillway inlet and outlet were clear of any debris. Embankments were well vegetated and no signs of instability. Pond RP-2/3 consists of three cells. Runoff from Refuse Pile 2/3/4 are directed into two upper cells. Once water fills to the spill way of these two upper cells,water then enters the larger third cell. The primary discharge is a riser pipe. The emergency spillway was armored with rip rap. Only the western cell held water with no discharge from the pond. RP-4 was dry at the time of the inspection. Primary discharge is a riser pipe with a rip rap armored channel as its emergency spillway.Both spillways were clear.No issues with the embankments were noted. Pond RP-5 was also dry. RP-5 has a combination primary/emergency spillway and was armored with rip rap. Embankments were stable and vegetated. The Raw Water Lagoon was inspected with no issues noted. Small Area Exemption's (SAE)within Deserado's permit are constructed with either a combination of berms and rock check dam,gravel pads or cross ripped grading for erosion control. The following SAE's were inspected: • B-Vent Shafts • Water Storage Tank • Explosives Storage • Haul Road Blisters • Radio Tower • Rock Dust Tanks No signs of erosion were observed in any of the SAES. 1 OL Vent Shaft SAE is a constructed pad with berms and a rock check dam as its primary sediment control.Noted in the March inspection report that cutting had occured below the rock check dam of the pad.Additional rocks were used to help mitigate more erosion with no signs of additional cutting at the time of this inspection. Number of Partial Inspection this Fiscal Year: 8 Number of Complete Inspections this Fiscal Year: 4 Page 3 of 8