Laserfiche WebLink
September 19, 2024 C-1981-018/Deserado Mine TJ1 <br /> <br /> <br />Number of Partial Inspection this Fiscal Year: 2 <br />Number of Complete Inspections this Fiscal Year: 1 <br /> <br /> Page 3 of 14 <br /> <br />stable with no erosional features. Runoff from the pad is directed to an outlet at the southern end of the pad and <br />passes down a channel through straw bales. The bales appear to be in good condition and functioning as designed. <br />(Photo 2) <br />FISH and WILDLIFE – Rule 4.18: <br /> Wildlife was observed throughout the mine site. Ducks and songbirds were noted at the Last Chance Pond <br />and the DP-1 Pond. Signs of ungulates such as tracks and scat were seen near the refuse piles. <br /> <br />HYDROLOGIC BALANCE - Rule 4.05 <br />Drainage Control 4.05.1, 4.05.2, 4.05.3; Siltation Structures 4.05.5, 4.05.6; Discharge Structures 4.05.7, 4.05.10; <br />Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring 4.05.13; <br />Drainage – Acid and Toxic Materials 4.05.8; Impoundments 4.05.6, 4.05.9; Stream Buffer Zones 4.05.18: <br /> There are three ponds located in the main facilities area: the DP-1 Pond, the PP-1 Pond and the PP-2 Pond. <br />The DP-1 Pond is located on the southern part of the lower facilities bench. DP-1 collects all runoff from the from <br />the three facilities benches. The outlet structure was clear of debris and the pond was discharging at the time of <br />inspection. The embankments appear stable with well-established vegetative cover (Photo 3). The emergency <br />spillway has minor amounts of vegetation, but still appears to be able to convey water and is well armored. There <br />were no erosional concerns identified. The PP-1 Pond is located on the middle bench of the facilities area near the <br />prep plant. The pond was below the discharge level. There were no erosion or stability issues identified in the PP-1 <br />Pond. The PP-2 Pond is located on the upper facilities bench. The outlet structure was in good condition with no <br />vegetation obscuring the outlet. Water diversion ditches throughout the main facilities area were unobstructed and <br />stable. <br />The B-Seam Dewatering System No. 2 was not active at the time of the inspection but had recently been turned on <br />to wet the clay in the pond and prevent cracking from the sun (Photo 4). The water in the upper pond is below the <br />discharge level. The lower pond was holding water and also below the level of discharge. The SDH#3 (D-Seam) <br />dewatering system was active at the time of the inspection. Water is being placed in the lower cell of the system <br />and the upper cells are not in use. The pad where the pump is located is in good condition with no signs of <br />instability. <br />The SS-2 Pond is located at the northwestern base of the Slot Storage Facility. The pond was dry at the time of the <br />inspection. The embankments of the pond were well vegetated and stable with no indications of erosion (Photo 5). <br />The RS-1 Sump and the RR-1 Pond are located at the south side of the Rail Loadout. The RS-1 Sump was dry and <br />stable. There were no indications of erosion. The RR-1 Pond was also dry. The embankments of the pond seem <br />stable. The erosion feature on the northern embankment that has been noted in previous inspection reports does <br />not appear to have grown in size. (Photo 6) The Rail Loadout Storage South Ditch is able to convey water and <br />does not appear obstructed. <br />Pond RP-1 is located at the base of the reclaimed RP-1 Refuse Pile. The pond was dry at the time of the <br />inspection. The embankments of the pond were stable with no indications of erosion observed. There were no <br />obstructions in the outlet - the trash rack over the pond’s outlet was clean.