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March 22, 2018 C-1981-025/North Thompson Creek Mine CCW <br /> <br /> <br />Number of Partial Inspection this Fiscal Year: 0 <br />Number of Complete Inspections this Fiscal Year: 3 <br /> <br /> Page 3 of 8 <br /> <br />from the No. 3 Mine pipe was at an approximate rate of 5 to 7 gpm. The water from the No. 3 pipe was colorless. <br />Iron oxidation was seen around the inlet to the Long Pond. This is consistent with past Division inspections. <br />Debris, wood and broken pieces of plastic culvert, were seen in the Long Pond near the inlet. Please remove <br />this debris from the pond (Photo 1). The water in the long pond is treated by cattails. Water observed flowing <br />out of the outlet to the pond was clear. There was no new iron staining deposited at the outlet. The embankments <br />of the pond were well vegetated and stable. Snow was seen on the north facing embankments. No erosional <br />features were observed. The outlet of the pond is a pvc pipe that leads to the T -1 Pond. The outlet was clear from <br />debris and functioning as designed. <br /> <br />- T -1 Pond (Photo 2): The T -1 Pond was receiving water from the Long Pond. The inlet pvc pipes were observed <br />to be unobstructed and functioning properly. The pond was full and discharging through the open spillway to the <br />T -2 Pond. The spillway was clear of debris. Water in the pond was observed to have no color. The embankments <br />of the pond were stable and well vegetated. No indications of erosion were noted. There was some snow and ice <br />on the north facing embankment. <br /> <br />- T -2 Pond: The T -2 Pond was impounding water and was discharging water through the open spillway to the P9 <br />Pond. The spillway was free from debris and functioning as designed. The pond was mostly frozen over at the <br />time of the inspection. The embankments of the pond were well vegetated and stable. No erosional features were <br />identified. The spillway to Pond P9 has filled in with some sediment. The ditch was observed to be able to <br />function as designed; however, the channel has widened as a result (Photo 3). Please clean the channel to <br />help ensure the design to pass a 25 year storm evet is maintained. <br /> <br />- P9 Pond: The P9 Pond was receiving water from the T -2 pond. The pond was completely frozen during the <br />inspection. The embankments were stable with no indications of erosion. The embankments were well vegetated. <br />Water from the P9 Pond was discharging through the spillway into the ditch leading to the Refuse Pond. The <br />outlet was observed to be unobstructed and functioning properly. <br /> <br />- Ditch to the Refuse Pond: The ditch w as generally in good condition. Water flowing in the ditch was contained <br />all the way to the Refuse Pond. The ditch was stable and the south embankments were well vegetated. <br />Approximately 100 yards east of the P9 Pond, a section of the ditch has become s hallow and widened (Photo <br />4). Please clean this section of the ditch to ensure that it can pass the 25 year storm flows as required. <br /> <br />- Refuse Pond: The level of water impounded in the Refuse pond was minimal. The small amount of water in the <br />pond was frozen and snow covered. There was no discharge from the pond. The embankments were stable and <br />well vegetated. No erosional concerns were identified. <br />