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<br />Attachment 3.8. Lighting Costs, C Pit Revision <br />(PR-1) Regrade hours 389.0 <br />(PR-1) Dozer shifts = 389.0 hrs/6.25 hr/sh 62.2 <br />Elapsed time: (62.2 dozer shifts)/(6 dozers) 3.5 days <br />(3 shifts/day) <br />(PR-1) Topsoil hours 530.9 <br />(PR-1) Scraper shifts - (530.9 hrs)/(8 hrs/sh) 66.36 <br />Elapsed time: (66.36 scraper shifts)/(2 scrapers) 11.1 days <br />(3 shifts/day) <br />(PR-1) Revegetation (daylight hours only) <br />Total elapsed time assuming no overlap 14.6 days <br />of activities. <br />Monthly light plant rental rate (1000 watt mercury $975.00 <br />vapor lights, 3KW generator (diesel), 3 section <br />28-foot telescope tower, 4 lights) <br />Pro-rated daily coat = ($97 5/mo)/(21.67 days/mo) $ 44.99/day <br />Operating Cost = $1.50/hr x 12 hrs/day $ 18.00/day <br />Total cost per unit per day $ 62.99/day <br />Number of units 3 <br />Total lighting cost: $62.99/day x $2,758.96 <br />14.6 days x 3 units <br />JMM/jb 5/87 <br />