Laserfiche WebLink
November 15, 2011 C- 1981 - 010 /Trapper Mine RDZ <br />EXCESS SPOIL and DEVELOPMENT WASTE — Rule 4.09 <br />Placement; Drainage Control; Surface Stabilization: <br />The Horse Gulch Fill was observed and found to be in compliance with the permit. Gullies were not <br />observed on the fill, and the slope contains significant vegetation. Some small rills were observed, the slope <br />should be continually monitored for problems. <br />EXPLOSIVES — Rule 4.08 <br />Distance Prohibitions 4.08.4; Warnings 4.08.4; Control of Adverse Effects 4.08.4: <br />One blast was observed during the inspection. On November 15, a parting shot was detonated in K Dip <br />Pit. Safety features were in place, including traffic control, radio communication, and sirens. <br />All observed blasting activities were at least 500 feet from the East Panel Ready Line, based on visual observation <br />and a discussion in the office with TMI employees. <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, <br />4.05.10; Diversions 4.05.4, Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring <br />4.05.13; Drainage —Acid and Toxic Materials 4.05.8; Impoundments 4.05.6, 4.05.9; Stream Buffer Zones 4.05.18: <br />Within the East A Pit, the evaporator (which has been used in 2011 to reduce the amount of water in the <br />pond) was not operating due to a mechanical problem. The water level was several feet below the low point in the <br />pit wall at the north end. A water truck was being loaded during the inspection. <br />In the pit below the Ash Pit (currently being used to hold water for water trucks), the water level was well below <br />the discharge elevation. <br />A de- watering well pump was being replaced by a contractor. <br />Nine ponds were inspected. This includes several that were discharging: the Industrial Waste Pond, Middle Flume <br />43, East Pyeatt 43, No Name 42, No Name 45R, and Johnson 410R. For all ponds that were discharging the water <br />was clear and appeared free of pollutants. Graham Roberts performed weekly monitoring at the CDPS points that <br />were discharging (all of the above except the Industrial Waste Pond and No Name 42). <br />Also inspected were Oak #I pond, Oak #2 pond, and Impoundment H. There was no discharge from these three <br />ponds. <br />No serious problems were identified with any of the pond embankments, spillways, or banks. However, the <br />following maintenance items were identified during the inspection: <br />• The flume below Oak Gulch 42 is blocked by large branches. <br />• A badger hole was seen on East Pyeatt 43 embankment. <br />• The flume at No Name #5 is slightly obstructed by grass. <br />Number of Partial Inspection this Fiscal Year: 6 <br />Number of Complete Inspections this Fiscal Year: 2 <br />Page 3 of 18 <br />