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average of 8 feet on 47 . 60 acres . For the slopes there would be <br /> 5570 feet of 3 : 1 (1837 cuft/lft) , 7430 ft of near vertical <br /> (306 . 26 cuft/lft) of water over the slopes . The aquifer inflow <br /> 72 , 300 gal according to the SWSP. Total water volume of lakes <br /> 2032 . 23 ac-ft (number is total depths plus half of slope areas) . <br /> Total dewatering time includes 25 . 55 day to pump lakes, 104 . 97 <br /> days to build slopes and 0 . 36 to pump recharge) the total pumping <br /> time is rounded to 131 days . <br /> The equipment used in the estimate is. <br /> Scraper teams - 2-Cat 627G scraper, D9R Dozer, 104H grader & <br /> water truck - Resoiling <br /> Grader - Cat 140H - seedbed prep and ripping plant sites <br /> Dozers - 4-Cat D9R - liner construction <br /> Dewatering Pump data 3-600M (6000 gpm) , 1511 , 121'suction & dis- <br /> charge hoses - total (18, 000gpm) <br />