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• The scope of work involved in this study includes the following: <br />1. Collection of available data concerning general geology and <br />stratigraphy, any specific test borings within the permit <br />area, or nearby (to include lithologic logs, electric logs, <br />etc.), all formation parameters available from others <br />(unconfined compressive strength, Brazilian tensile strength, <br />modulus of rupture, Young's modulus, Poisson's ratio, etc.), <br />topographic information, air photos, monitoring data, and all <br />other miscellaneous data available from others pertinent to <br />the studies on-site. <br />2. Collection of site-specific data insofar as possible from <br />rockcore available from two test borings located within <br />permit boundaries. <br />3. Analysis of subsidence to include the following: <br />a. Preparation of models and examination of all pertinent <br />mechanisms; <br />b. Identification of critical "tension zones" (and their <br />ultimate impact on stability); <br />c. Estimation of the maximum displacements at the surface <br />and the final subsidence surface profiles including an <br />evaluation of their effects on grading and drainage, <br />changes in strength characteristics of subsurface <br />materials, and their ultimate impact on stability. <br />• <br />4 <br />