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Memo to Jared Ebert 2 January 8, 2010 <br />Slope Stability Review File No. M-2009-082 <br />The applicant states the worst case scenario for Phase 1A is represented by the north mining <br />highwall of the phase. The applicant used conglomerated data from ET02-13H06, ET02-TP03, ET02- <br />PH05, No. 1, No. 2 and MW-3 to determine the offset for the Whitney Ditch and WCR 64.5. The <br />Division agrees the north highwall is the worst case scenario for Phase 1A; however the applicant <br />must perform individual analysis for each boring and propose a setback from the critical structures <br />based on the individual results instead of the conglomerated data results. <br />The Division will conduct further analysis of the critical cross sections for the Parsons Mine after the <br />required information is provided by the applicant using Clover Technology's Galena v5.01 slope stability <br />software.