Laserfiche WebLink
2.05.6(6) <br />Subsidence Monitoring <br />Monument <br />Location <br />Frequency <br />Purpose <br />Color aerial <br />USDA -FS <br />5 Year intervals <br />To monitor the topographic surface, <br />photographs <br />Managed <br />beginning in 2001 <br />soil and vegetation through <br />Surface <br />until two years after <br />interpretation of color aerial <br />mining. <br />photographs <br />Visual <br />Known <br />Twice per year, <br />Determine if mining has rejuvenated <br />historic and <br />typically June and <br />or created new landslides. <br />modem <br />November. <br />landslides <br />within the <br />permit and <br />adjacent area. <br />Visual <br />Sheep Corral <br />Within 3 months <br />Monitor for surface fractures that may <br />Drainage <br />after the B -8 bleeder <br />cause interruption of surface flows, <br />entries are <br />damage stock ponds or create large <br />developed, and on a <br />fractures that will need to be mitigated. <br />quarterly basis <br />thereafter during <br />mining of panels B -8 <br />and B -9, and for six <br />months post mining. <br />All other <br />Over mining area At the discretion <br />To develop subsidence data to <br />monuments <br />of the Operator <br />support future mine plan expansions. <br />PR-14 2.05-179- 03/14 <br />