1981-11-13_PERMIT FILE - C1981013 ‎(48)‎

• Permit No: C1981013
• IBM Index Class Name: PERMIT FILE
• Doc Date: 11/13/1981
• Doc Name: Surface Water Control Design Data
• Section_Exhibit Name: Volume 2 Exhibit 16
• Media Type: D
• Archive: No

TABLE 4
MAXWELL MINE
DRAINAGE STRUCTURES FOR DISTURBED RUNOFF
MINE SITE DRAINAGES TO POND 003
10-YR PEAK
DIMENSIONS ISLOPE LENGTH MAN. FLOW FLOW DEPTH VEL
CH NNEL IN-FLow SHAEEIDEP Top BOTOMI 7° FT No. CFSCFS FT FPS
DITCH 1A 003-1 TRAP 1 .0 4 .0 1 .0 0.9 440 0.04 5.9 4 .7 0.9 2.2
DTCH 1-A1 D . 1 TRI 2 .0 17 .0 0 .0 2 .6 320 0.04 100.2 4.7 0.6 2.7
CMP-i D. 1-AICIRC 1 .5 1 .0 50 0.024 5.7 4.7 1 .0 3.6
DTCH 1A-2 CMP-1
002-3 TRI 1 .5 7.0 0.0 1 .2 620 0.04 16.5 7.8 1 . 1 2.6
DTCH 1A-3 D. 1A-2TRAP 1 .5 7 .0 2.0 5.6 260 0.04 53.6 7 .8 0.6 4 .7
CMP-5 D A A-3
003-3 CIRc 2.0 5.0 120 0.024 27.4 20.6 1 .3 9.6
DTCH IA-4 CMP-5 TRAP 1 .5 10.0 2 .0 2 . 1 580 0.04 43.7 20.6 1 . 1 4 .0
CMP-6 D. lA-4CIRc 2.0 4.0 35 0.024 24 .5 20.6 1 .4 8.7
DTCH 1A-5 CMP-6 TRAP 1 .5 10.0 2 .0 1 . 1 710 0.04 31 .4 20.6 1 .2 3. 1
DITCH 5 003-4 TRAP 1 .3 12.0 6.0 1 .5 1380 0.04 47.4 15.8 0.7 3.0
CMP-3 D .5
003-5 CIRc 2.5 0.8 100 0.024 19.2 18 .7 2.0 4.5
DITCH 5-1 CMP-3 TRAP 1 .5 10.0 2.0 1 . 1 420 0.04 30.8 18 .7 1 .2 3 .0
DITCHES 1A-5 AND 5-1 FLOW INTO POND 003
SPILLWAY 003 PARA 2.0 30.0 1 .0 50 0.04 178.6 39.3 0.9 2.8
CMP-5 CORRIGATED METAL PIPE CULVERT
DITCH 5 /
D.5 DRAINAGE DITCH
003-4 DRAINAGE BASIN
003 SEDIMENTATION POND
22