REP07050 - Laserfiche WebLink

Home Browse Search

Item Predicted impact in Observed impact Prediction ermit a lication accurate? None measured this period. Maximum 67" See previous reports. No Vertical subsidence of subsidence at the stations were monitored during Yes magnitude mid-panel station 428 the report period. [Table 1 of Exhibit 4e- 3 of ermit] Horizontal displacement No magnitudes See previous reports. No magnitude predicted stations were monitored during Yes the report period. Maximum 21 degrees See previous reports. No Angle of draw [page 2 of Exhibit 4e-3 stations were monitored during Yes. in ermit a lication]. the re ort period. Continued undermining; no Twentymile Sandstone No off-site impacts impact based on data from Yes. monitoring wells (in annual h drolo y re orts). UP Railroad track. Track will be subsided. During previous periods, the Monitoring within S00 (p 2.05-181.6 of track subsided as predicted. yes. feet and 1500 feet permit) Track was successfully re- beyond leveled. Yampa Valley Electric None None Association powerline . . Report contains premising and post-mining Fish Creek profiles. Subsidence magnitude is approximately 15% greater than predicted, but overall Pooling of water consistent with prediction in Fish Creek, and Fish (Exhibit 7e-2 of Exhibit 4e-3 of permit yes Creek AVF permit)PAP page 2.05- application. Pooling appears 181.8 consistent with pooling prediction in Exhibit 7e-2. Data in report from surface water and alluvial water monitoring sites indicate subsidence did not degrade water quality. Increase in flooded A Fish Creek Vegetation areas, and reduction in Monitoring 2004 report was Vegetation Monitoring distance from surface included in the subsidence yes to the water table (PAP report. As predicted, there are [pages.2.05-181.8 and impacts to vegetation in small 181.10, 2.05-191.4) areas. Foidel Creek Foidel, PAP 2.05-181.6 Ashley Impoundment and Ditch 2.05-181.8, Not Middle Creek undermined during this reporting period