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<br />--. <br /> <br />Flirliron Companies- Job 207FIP05 <br /> <br />Preliminary <br /> <br />March 25, 1997 <br /> <br /> Table 1 <br /> Summary of Freeboard for Flood Control Dike at Turnpike Pit <br /> South Boulder Creek Flood Plain, South of U.S. Highway 36 <br /> Township 1 South, Range 70 West, 6th P.M., in Boulder County, Colorado <br /> Scott, Cox <br />Taggart Engineering Greenhorn & O'Mara, Inc., and Associates <br />Associates, Inc., 1996 July 1986 Field Survey Freeboard = Top of Dike Elevation <br /> Minus Base Flood Elevation <br />Cross HEC-2 100-Year Dike <br />Section 100-Year Cross Base Flood Station Dike <br />Identification Base Flood Section Elevation at Elevation Recommended Required <br />Drawing 2 of 2 Elevation Identification Table 3 X-Sec Sep 1996 Sep 1996 Comment Action Fill <br /> (a) (CuFt) <br />10500 5410.42 . 15465 <br /> 5406.3 26330 5403.5 14865 5408.4 2.1 Less than 3' Fill 1.9 Ft. ( b ) 10,333 <br /> 5405.5 14750 5410.9 5.4 Over 4' None <br /> 5404.1 14550 5409.8 5.7 Over 4' None <br /> 5402.0 14250 5406.9 4.9 Over 4' None <br />9848 5400.04 13970 5406.5 6.5 Over 4' None <br />9096 5397.91 13400 5402.0 4.1 Over 4' None <br /> 5397.6 25585 5394.7 13360 5401.3 3.7 3't04' Fill 0.3 Ft. ( c ) 46 <br />8700 5394.62 13000 5396.2 1.6 Less than 3' Fill 2.4 Ft. ( c ) 7,347 <br /> 5393.7 24930 5389.1 12930 5395.4 1.7 Less than 3' FiII2.3Ft.(c) 2,487 <br />8186 5387.92 24870 5387.7 12480 5390.7 2.8 Less than 3' Filll.2Ft.(c) 11,941 <br />7986 5385.37 12310 5388.7 3.3 3't04' Fill 0.7 Ft. (c) 2,410 <br />7804 5383.71 24270 5381.1 12140 5386.4 2.7 Less than 3' Fill 1.3 Ft. (c) 2,525 <br />7516 5378.58 11870 5382.3 3.7 3't04' Fill 0.3 Ft. ( c ) 3,338 <br />7245 5374.95 11590 5379.6 4.7 Over4t None <br />6996 5372.60 11350 5377.1 4.5 Over 4' None <br /> 5369.6 23103 5369.4 11150 5375.2 5.6 Over 4' None <br />6683 5368.52 11080 5374.6 6.1 Over 4' None <br />6434 5366.86 10860 5372.5 5.6 Over 4' None <br />6101 5362.24 10560 5371.1 8.9 Over 4' None <br /> 5360.2 22505 5363.1 9970 5372.3 12.1 Over 4' None <br />6028 5359.99 9900 5371.1 11.1 Over 4' None <br />5938 5359.18 9520 5367.3 8.2 Over 4' None <br /> 5357.1 22035 5357.7 9230 5364.4 7.3 Over 4' None <br />4617 5355.98 9070 5362.7 6.7 Over 4' None <br />4054 5355.83 8540 5357.3 1.5 Less than 3' Address Later NA <br />3700 5355.30 8280 5355.1 -0.2 Overtopped Address Later NA <br /> 21966 5355.5 8130 Cubic Feet: 40,427 <br /> Plan on about 1900 cubic yards of material <br /> <br />( a ) Elevations in smaller italicized text are interpoated values. <br />( b ) Raise dike as shown, and extend dike about 250 feet to the west to meet existing ground. <br />(c) Raise approximately 1605' of dike, from 0' to 2.4' between stations 11786+- and 13391+-. <br /> <br />Leonard Rice Consulting Water Engineers, Inc. <br /> <br />( Printed 26-Mar-97 ) <br /> <br />File: Freboard.WBl <br />