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<br />• <br />• <br />5'f <br />~.~. ~ -~ <br />~ Exct.s <br />TAb 3'3 <br />III IIIIIIIIIIIII III <br />999 <br />CULVERT AND LOW WATER CROSSING <br />DESIGN SPECIFICATIONS <br />FISH CREEK BOREHOLE DEWATERING SITE <br /> Low Water <br />Crossings <br />Station Drainage <br />Area <br />Acre Peak <br />Flow <br />cfs HW/D Culverts <br />HW Culvert <br />Size Bottom <br />Width Side <br />slopes Flow <br />Depth % <br />Slope <br />CO 27• 194.5 17.0 0.6 1.9 36" <br />1+00*~ 41.3 5.3 0.9 1.4 18" <br />8+50 21.6 3.9 3' 6:1 0.5 0.005 <br />18+50 21.6 3.9 3' 6:1 0.5 0.005 <br />28+IXI 76.9 8.2 6' 6:1 0.5 0.005 <br />39+50 11.4 3.3 3' 6:I 0.5 0.005 <br />46+00 6.6 21 3' 6;7 0.4 0.005 <br />62+Op 1.1 0.3 3' 6:1 0.2 0.005 <br />74+00 1.0 0.3 3' 6:1 0.2 0.005 <br />79+00 6.9 1.2 0.5 0.6 75" <br />84+Op 4.0 1.3 0.5 0.6 15" <br />Vent Borehole Road Crossing <br /> 0.8 .5 0.65 0.65 12" <br /> <br />The culvert under County Road 27 is existing. <br />'" The culvert at Station 1+00 may be replaced with a low water crossing or the road base may be built <br />up. (See page Ex. 8-3) <br />All culverts were designed fora 10-year, 24-hour event <br />Precipitation ~ 1.8 inches <br />CN=70 <br />TAB 3.3,PG 1 <br />=unit Renewal No. 3 <br />FORMERLY <br />Ex. 8- I S <br />11/1/99 <br />