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with appropriate documentation of the evaluation submitted to the Division in letter form <br />within one working week after completion of the excavation. <br />3. Sediment pond B embankment <br />The report found the sediment pond embankment will be stable during the operation of the <br />mine and after reclamation. However, geotechnical exploration was not completed at the <br />location of the proposed sediment pond. Therefore, the Operator will conduct additional <br />borings and laboratory evaluation of the subsurface soils at the proposed location of <br />sediment pond B in order to verify or modify the assumptions made in the geotechnical <br />designs. Results of this evaluation will be submitted to the DMG prior to construction of <br />sediment pond B. <br />The Terracon report recommends an engineering evaluation of actual conditions <br />encountered in the excavation to verify the conditions correspond favorably with the <br />assumptions made in the stability analysis. Therefore, the Operator commits to the <br />following: <br />An engineering evaluation of actual conditions will be conducted to verify the assumptions <br />or modified assumptions used in the geotechnical designs for the proposed excavation and <br />embankment work for sediment pond B. This evaluation will be conducted by a qualified <br />• geotechnical professional. The evaluation will be performed contemporaneously with the <br />excavation. The Division will be verbally notified of the results of the evaluation <br />immediately following the excavation with appropriate documentation of the evaluation <br />submitted to the Division in letter form within one working week after completion of the <br />excavation. <br /> <br />PR-03 - 2 - 10/99 <br />