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.."- <br />Memo to Mike Long - 3 - October 20, 1989 <br />If 2H:1V slopes are used: <br />1. Approximately 500,000 cubic yards must be moved at a cost of 5350,000.00. <br />2. Approximately 37,900 cubic yards of topsoil must be moved to cover 47 <br />acres at a cost of 526,500.00. <br />3. Approximately 47 acres must be revegetated at a cost of $32,900.00 <br />(5700/acre, higher cost because of steeper slopes). <br />4. Stream channel reconstruction costs would be approximately 535,000.00. <br />5. Total cost would be approximately 5445,000.00. <br />6. This cost estimate does not include engineering design or implementation <br />of measures to ensure erosional stability of steep slopes. <br />Both cost estimates could be reduced if the east highwall material can be used <br />for backfill and/or cover material. Neither scenario will require movement of <br />any material from overburden stockpile one. Neither estimate includes the <br />cost of maintenance of reclaimed surfaces. <br />0562E/scg <br />