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<br /> <br />Item Predicted impact in <br /> <br /> <br />permit application <br />Observed impact <br />Prediction accurate? <br />. <br /> Maximum 18.4 ft. Between 2000 and 2007 visual <br /> <br />Vertical in two-seam <br />mining areas. <br />observations are used for <br />Although subsidence <br />subsidence Less than 1 ft. verifying the conceptual displacements have not been <br />magnitude near panel edges subsidence model, rather than surveyed since 1999, visual <br /> in single-seam quantitative monitoring. The Fall observations described in the <br /> <br />mining areas 2007 report included data from a <br />Spring 2008 report indicate <br /> . f <br />l E <br />1 <br />i <br />i <br /> pane <br />- <br />pre-m <br />n <br />ng surveys o subsidence displacements and <br />Horizontal Maximum and the thalweg of the Dry Fork the angle of draw have <br />displacement horizontal strain of Minnesota Creek. Postmining probably not significantly <br />magnitude of 3.9% surveys will be conducted after exceeded the predicted values. <br /> Panel E-1 and the Dry Fork are <br /> <br />Angle of draw 8 - 21 degrees undermined. <br /> Rockfalls No rockfalls or cracking found in <br />USFS roads , <br />cracking visual survey for Spring 2008 Yes <br /> report <br /> No draining by subsidence cracks <br />USFS ponds Draining found in visual survey for Spring Yes <br /> 2008 report.