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TABLE 13-3 Cul ve [t Summary fJAT ER>'HED PARAMETER Area Length Relief Culvert IACI IF[) IFtI Peal: Discha rqe Culvert 10-Yr., 24-Hr. Length CN ICF51 IEL.1 • Selected Culvert f7W Diameter Required Iln.l (F[1 YA-I 63.1 2900 40 84 18.1 120 36 2 07 YA-2 93.2 2400 105 B4 18.8 240 36 2 12 YA-3"' 73.2 2850 140 B9 55.6 120 48 3.vo YA-3A q9.9 2200 130 86 30.4 150 36 2,93 YA-4 "' 36.5 1400 110 84 21.7 150 3G 2.33 YA-4A 2.2 320 20 64 1.3 150 24 2 40 YA-5 46.8 2000 70 84 27.9 180 36 2 75 YA-5A 13."1 960 55 84 B.2 60 24 1.59 YA-6 2595 See SE DCAD 72 77 (eal 150 60 8.09 TA-7 47.5 1600 100 BO 20.G 90 24 3.96 'fA-8 38.2 1200 70 80 16.6 150 24 2 72 YB-1"' 14.3 See SEDCAD 91 13.3 120 24 2 24 'i6-2 44.2 See SE DCAD 79 8.1 120 24 1.SB YB-3 7a,7 See SE DCAD 60 0. 7_ 80 24 0.18 1'B-6 535.7 Se= cE DCAD 91,52 79.6 350 9B 4.6] Two culverCS needed, 150 ft. each Peak drscha rye from the 2S-y r, 24-hr storm is 388 cfs. Culverts are properly stied for this even[. °iCUlve [t YA.-3A, was design=_d and submitted as MRO1 on Aug ost 17, ]996. This revision was approved by the Civision on August 1B. The 49 y acres of watershed ce ve red by [his culve ri is also included in the design for Culvert YA-3. E3e ca use Culvert YA-3 was constructed and backfilley a[ the time eE MR-O1 submittal, SCC did not redesign and change the parameters for this culvert. "'CUlve rt YA-4A was designed and submitted as MR 04 on May 3, 1996. The 2.2 acres of waiersh ed covered by this culvert is also included in the design for Culver[ fA-4. Because Culver[ YA-q was constructed and back f]lled at the time of MR 09 submit to 1, SCC did not red es iyn and change the parameters fcr [his culvert. "'Culvert LU-1 was installed per the design for Culvert YB-1. LU-1 is a 30" culvert installed at the ou[1 et of Diversion Ditch No. 2 and drscha rg es into the riprap downdrain into Pond 010. The culvert and downdrain were installed to minimize the erosion occurring in this area neat 6o nd 010. 21 Revised 10/01/99