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Conducted sufficient <br />post-mining monitoring <br />to verify subsidence <br />rediction <br />2.05.6(6(c)(i))(F) <br />Yes <br /> In compliance based on <br />Accurately predicted 2.05.6(6)(d)(i) Yes observations below, with the <br />subsidence. possible exception of angle of <br /> draw (see ex lanation below). <br />There was no imminent <br />or actual material <br />damage or diminution of 2 05.6(6)(d)(i) Yes In compliance based on <br />use of renewable observations below. <br />resource lands or <br />structures <br /> <br />Item Predicted impact in <br />¢rmit a lication <br />Observed impact ~ <br />prediction accurate. <br /> Maximum 67" of <br />Vertical subsidence at the <br />subsidence mid-panel station, Maximum of 67" at station M457 Yes. <br />magnitude 457 [Table 1 of <br /> Exhibit 4e-3 of <br /> permit] <br />Horizontal <br />displacement Unspecified. Not reported. N/A <br />ma itude <br /> This maybe the first time the <br /> observed angle of draw <br /> significantly exceeded the <br /> maximum predicted. There <br /> was no material damage or <br /> diminution of reasonably <br /> Maximum 21 Approximately 30 degrees (based foreseeable use of structures <br /> degrees [page 2 on near-zero subsidence at station or renewable resources. An <br />Angle of draw of Exhibit 4e-3 in <br />R444 that is approximately 630 ft. increase in the angle of draw <br /> permit <br />outside direct undermining). from 21 to 30 degrees would <br /> application]. extend the disturbed azea by <br /> about 200 fl. around the <br /> perimeter of future planned <br /> workings, still distant from <br /> any structures or renewable <br /> resources on the ground <br /> surface. <br /> Continued undermining; no <br />Twentymile No off-site impact based on data from yes. <br />Sandstone impacts monitoring wells (in annual <br /> h drolo re orts). <br />