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Hitch Rack Ranch Phase III Surety Calculation Details <br /> Project: Hitch Rack Ranch <br /> Date: 07/05/16 <br /> Prepared by: Norwest Corporation <br /> WORKSHEET 5 <br /> PRODUCTIVITY AND HOURS REQUIRED FOR DOZER USE <br /> Earthmoving Activity: <br /> Highwall <br /> Approximately 26,539 Icy of material calculated for Year 5 pit layout. <br /> Total volume calculated using Carlson software. No haulage of material needed. <br /> Characterization of Dozer Used (type, size, etc.): <br /> D10 Dozer <br /> Description of Dozer Use (origin, destination, grade, haul distance, material, etc.): <br /> Assume one dozer, average operator, loose stockpile, 50 min/hr, all pushing is down grade (easy <br /> push),some slot dozing possible, 180 foot average push. <br /> Productivity Calculations: <br /> Operator Adjustment Factor= 0.75 x 1.20 x 1 0.83 1 X 1.40 X 1.00 <br /> operator material efficiency grade weight <br /> factor factor factor factor correction <br /> factor <br /> X 1.00 X 1.00 X <br /> production visibility elevation <br /> method/blade factor factor <br /> factor <br /> Net Hourly Production 1000 LCY/hr X 1.05 = 1046 LCY/hr <br /> normal hourly operating <br /> production adjustment <br /> factor <br /> Hours Required 1 26,539 LCY — 11046 LCY/hr = 0 hr(s) <br /> volume to be net hourly <br /> moved production <br /> Data Source(s): CAT Handbook Edition 43 <br /> Printed 9/26/2016 APPENDIX L-1 11 <br />