Laserfiche WebLink
EXHIBIT 9 <br />FRUITA LOADOUT - POND 1 <br />PROTECTION OF THE HYDROLOGIC BALANCE <br />STORM EVENTS <br />10 YEAR 24 HOUR EVENT 1.6 INCHES <br />25 YEAR 24 HOUR EVENT 2.0 INCHES <br />100 YEAR 24 HOUR EVENT 2.6 INCHES <br />The Inkmation presented for peak flow calculations is developed with the use of tv <br />SEDCAD. The output data from SEDCAD follows ft section. <br />The runoff areas are shown on Map 13 in Volume 11. The run off <br />aim numbers are developed based upon vegetation and sail types. Vegetation <br />data are presented In Volume 1, Exhibit 5 and shown on Map 3 in Volume It. <br />Soils data are presented in Volume 1, Exhibit 7 and shown on Map 6 It Volume If. <br />Ditches and culverts and drainage plans are shown on Map 13. <br />CURVE NUMBERS <br />Disturbed <br />Table 2- 2d- Runoff curve numbers for and and semiarid rangelands <br />Cover Type - Herbaceous <br />Hydrologic Condition Poor <br />Soil Type - Loam C <br />Curve Number 87 <br />RUN -OFF VOLUME - - Pond 1 <br />25 -Year <br />Precip Direct Run -off <br />Area Acres Curve # Amount Run -off Vol A -F <br />Disturbed 16.56 87 10 0.91 1.25 <br />TOTAL 16.66 1.25 <br />SEDIMENT VOLUME - Pond 1 <br />Use the universal soil loss equation. <br />U1=3:i>Ii411 <br />R = rainfall factor <br />20.00 <br />K = soil erodibility factor - loam <br />0.37 <br />LS - combined length slope factor <br />0.17 <br />Use Area D-1 c 9W ft & .3% <br />C = cropping management factor - Figure 7 <br />1.00 <br />P = erosion control practice factor <br />1.00 <br />A = sediment, tons /acre/year <br />1.26 <br />THREE YEAR SEDIMENT VOLUME - CUBIC FEET <br />16.56 ACRES -115 #/CF <br />0.02 <br />TOTAL REQUIRED CAPACITY -- Acre Feet - Pond 1 <br />1.27 <br />Permit Application EXH. 9-4 08/11 <br />