PERMFILE67378

• Permit No: C1982057A
• IBM Index Class Name: Permit File
• Doc Date: 3/1/2007
• Doc Name: Culvert Calculations
• Section_Exhibit Name: Tab 13 Attachment 13-7
• Media Type: D
• Archive: Yes

TABLE 13-7-1 ,
SUMMARY OF WATERSHED PARAMETERS, PEAK FLOW, AND DESIGN STATISITICS FOR CULVERTS IN MINE PERMIT AREA,
SENECA II-W MINE, ROUTT COUNTY, COLORADO
WATERSHED PARAMETER Culvert Culvert Maximum
Culvert Area
(Ac) Length
(MI) r'r Relief
(Ft) t'I CN Peak Discharge
10-Yr., 24-Hr.
cfs Length
(Ft) Diameter
(In) Head
(Ft) ~'~
OW-1 110.3 See SEDCAD rvns See SEDCAD runs See SEDCAD runs 5.8 100 15 2.0
PM-1 14.1 0.40 150 80 4.9 60 18 1.9
PM-2 4.2 0.34 123 81 2.9 60 12 1.5
PM-3 10,8 See SEDCAD runs Sae SEDCAD runs See SEDCAD runs 1.9 60 10 2.0
PM-4 91 1 Sea SEDCAD runs See SEDCAD runs See SEDCAD runs 4.9 60 15 2.0
PM-5 19,0 See SEDCAD rvns See SEDCAD runs Sae SEDCAD runs 3.2 60 12 2.0
PM-6 80.7 Sea SEDCAD runs See SEDCAD runs See SEDCAD ions ],4 60 18 2.0
PM-7 3.3 See SEDCAD rvns See SEDCAD runs Sae SEDCAD,uns 0.6 60 6 2.0
PM-8 6.3 See SEDCAD runs Sea SEDCAD runs See SEDCAD pins 1.01 30 8 2.0
PM-9 7,0 Sea SEDCAD runs Sae SEDCAD runs Sea SEDCAD runs 1,12 30 8 2.0
PM-10 22.2 See SEDCAD runs Sae SEDCAD runs Sea SEDCAD runs 4.79 30 15 2.0
PM-11 5.3 See SEDCAD runs Sea SEDCAD runs See SEDCAD runs 3.73 30 12 2.0
PM-12 7,4 See SEDCAD rvns Sae SEDCAD runs See SEDCAD tuna 1.19 30 8 2.0
PM-13 4.2 See SEDCAD runs Sae SEDCAD rune See SEDCAD runs 0.67 30 6 2.0
PM-14 5.3 sea SEDCAD runs Sea SEDCAD runs See SEDCAD runs 0.71 30 6 2.0
PM-A5 117.0 Sae seocaD rvns Sae SEDCAD runs See SEDCAD nrna 3.8 60 12 2.0
Note: (1) See individual SEDCAD+ information in Attachment 13-7
(2) Minimum cover over top of culverts = 2 feel
(3 Li ht-use road culveds (for desi n ammeters see Attachment 13-9
TR-55 13-7-2 Revised 12/06