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Martin Marietta Materials <br />Spec -Agg 2014 Annual Report <br />2.0 PURPOSE AND SCOPE OF WORK <br />The purpose of the annual evaluation is to monitor the influence the bedrock structural geology has on pit <br />wall stability as mining progresses. The data collected during this annual assessment was obtained <br />during two site visits. <br />The scope of this study is as follows: <br />• Observe recent rock mass exposures for large -scale instability and collect geologic rock structure <br />data. <br />• Document the orientation and character of rock mass discontinuities (e.g., joints, foliation and faults) <br />where recent exposures are accessible to supplement the existing structural geology database. <br />• Document groundwater observations at mapped locations. <br />• Photograph significant findings at the mapped rock mass exposures. <br />• Compare the new rock structure data collected during the 2013 -2014 annual study with the previously <br />collected data to identify potential changes to the previously analyzed discontinuity sets and possible <br />new sets that may need to be considered for the mine highwall slope stability analysis. <br />• Update the rock slope stability analyses for the final mine highwall slopes based on the new rock <br />structure data. <br />• Prepare this report to summarize the field observations, mapping data and slope stability analyses <br />results. <br />March 31, 2014 Page 2 Lachel & Associates, Inc. <br />Project 13364013.00 02014 All Rights Reserved <br />