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<br />TABLE 4.5-11 <br />HAUL ROAD CULVERTS <br />WATERSHED <br />PEAK FLOW CULVERT <br />SIZE 10-YR, 24-HR SIZE <br />(ACRES) (CFS) (ROUND) <br />HEADWALL PROTECTION <br />C 36 7.8 18" Flared End <br />D 18 4.6 18" Flared End <br />E 56 10.7 18" Flared End <br />E 56 10.7 30" Flared End <br />F 31 7.0 30" Flared End <br />X 540 52.9 42" Flared End <br />Munger Creek Drainage Basin 4,800 249.0 72" Rip-Rap <br /> WASTE ROCK DISPOSAL SITE CULVERTS <br /> <br />X* 6 3.6 42" Flared End <br />X 12 2.7 30" Flared End <br /> MINE BENCIi SITE <br />B <br />A** <br />70 12.0 <br />832 124.0 <br />21" Flared End <br />Open Air Permanent Diversion, Fig. 15 & 16 <br />*Flow from this 6 acre portion of Watershed X will be diverted to Watershed F. <br />**100-YR, 24-HR <br />Estimated runoff values for Watersheds A, B and the Munger Creek Drainage Basin were calculated by Hydro-Triad, Ltd. <br />Calculations are found in Appendix M(v). <br />Calculations of estimated runoff values for Watersheds C, D, E, F and X were performed by R.V. Lord & Associates and <br />are also given in Appendix M(i). <br />