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<br />Based on these observations and the short life of the pile, we <br />believe the elope of 1.5:1 will be stable. <br />In the unlikely event that a elope failure dcea occur, there <br />would be no detrimental environmental impact. No topsoil would be <br />contamioa[ed as it will not be replaced in the vicinity of the pile <br />until after mining is completed, There is a diversion ditch located <br />veal of the stockpile location which would most likely be buried by <br />a elope failure. However, there will be a secondary diversion ditch <br />vest of the first one which would handle any floe in the event the <br />original ditch was destroyed. <br />1. According to the maps and cross section, the Division concurs with <br />the calculated 250,000 BCY from the first cut. However, the 570,000 BCY <br />calculated as total overburden volume seems substantially low (ie., only <br />260,000 BCY remain Eor cuts no. 2 through no. 6). These volume <br />calculations should be adequately addressed, so that approximate material <br />volumes are as planned, and contemporaneous reclamation (grading) is <br />efficient and effective. <br />RSSPONSS: <br />An error was made in printing the total amount of overburden <br />and the amount of overburden in cuts 2-6. This error has been <br />corrected and is presented on Revised page 2.05-3a. <br />2. Another concern is for the Homestead Ditch which is located in the <br />area to be surface mined. The final backfilling and grading does not <br />-41- <br />