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Asf-4 <br />HAUL ROAD CULVERT SIZING CALCULATIONS <br />There are five culverts which have "non-natural" discharge basins. <br />These will be sized in the flowing calculations. <br />1,) From the Bathhouse area under the main Haul Road to the north <br />collector ditch for the Sediment Pond (see Figure 2.2-25). <br />410 = 14.5 cfs - Page Asa-3 <br />use 30" ~ cmp so that HW/D = 0.77 <br />2.) From the Supply Yard Area under the refuse area access road <br />at Stn. 7 + 00 to the South Collector Ditch. <br />410 = 9.22 cfs - Page Asa-3 <br />use 24" ~ cmp so that HW/D = 0.82 <br />3,) At Stn. 86 + 60 on the refuse Haul Road <br />410 = 3.28 cfs - Page Asc-3 <br />use 18" ¢ cmp so that HW/D = 0.65 <br />4.) The culvert at Stn. 74 + 10 should be checked to see if it can <br />handle the 100-year Peak Flow from the Permanent Diversion - <br />see page ASe-3. <br />• use 42" ~ cmp <br />5,) At the Refuse Disposal Area Topsoil Stockpile under the Access <br />Road. <br />410 = 1.6 cfs - Page Asd-3 <br />use 18" ~ cmp HW/D = <0.5 <br />n <br />~J <br />,~. <br />'` -- . <br />