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Item (structures Predicted impact <br />in this portion of in permit Observed impact Prediction accurate? <br />the NMD a lication <br /> No validation measurements were Yes. Previous subsidence <br /> Maximum 21 reported during this period. The monitoring has demonstrated <br /> degrees [page 2 angle of draw ranges between that subsidence predictions <br />Angle of draw of Exhibit 4e-3 17.0 and 19.5 degrees. As were conservative and <br /> anticipated, there was no provided acceptable <br /> in permit <br />application]. significant ponding due to descriptions of expected <br /> subsidence during the report subsidence in areas for which <br /> eriod along Fish Creek. there are no structures. <br /> Continued undermining; no <br />Twentymile No off-site impact based on data from <br />Yes <br />Sandstone impacts monitoring wells (in annual . <br /> hydrolo reports). <br />UP Railroad <br />track. No track was <br />Monitoring undermined N/A Yes <br /> <br />within 300 feet <br />during the . <br />and 1500 feet reporting period. <br />beyond <br /> See page 2.05- <br /> 184.7 of the PAP <br /> and page 4 and 3 <br /> of Exhibit 7e-7. <br /> Vertical Ten of the 52 pylons of the <br /> subsidence up to Archer-Hayden transmission line The predicted vertical <br />Archer-Hayden 48 inches (PAP) had settlements over 48 inches; subsidence was accurate for <br />Electric and 4 feet the most was 4.446 foot or 53.32 most of the line, but was <br />Transmission (exhibit) was inches, 111 % of that predicted. under the actual maximum by <br />Line predicted. Small Horizontal displacements were 1 I%. Horizontal movement <br /> displacements in small. See page 13 of the report. and damage predictions were <br /> horizontal There was no debilitating accurate. <br /> directions were damage. <br /> predicted. No <br /> debilitating <br /> damage was <br /> redicted. <br />