REV15641

• Permit No: C1980002
• IBM Index Class Name: Revision
• Doc Date: 7/21/1980
• Doc Name: O C COAL MINE 2 HYDROLOGY & DRAINAGE REPORT
• Type & Sequence: PR1
• Media Type: D
• Archive: No

Gingery Associates, /nc.
CONSULT/NG ENG/NEEFiS
IJ10 UTE AVENUE
GRAND JUNCTION.
COCORAD081501
/ TfLEPNON£J037d50617
.qYf °IIr[(
]MO SOU(x V~L lf/D S lll!( I
(M'I (Y.O°O. COt O.tA0O I0r10
rnerxovr ~ ni.(so
DES/GN CALCULAT/ONS
Project O. CC~f
Feature ~ ;On
DesignedR KF Dole7 ]s Shl.? of
Checked Dale /ob No. 1~/
I~}rKi = ~, 3 aG ~
Fror, Fig, D-Z, Weak disG~'aar9Q = 3,7 C.~.S.~lncl~ at IurwtT
.. Q,o= 3.'7x Loa= 3.$ c.~ls~
D1t~h slopQ = 20%
.'. Deptl, = 0.75 fT U = 6.9 ~,p.s.
Ta get velocity below S ~.p.s., install Z' water bars ar 17cr;lc(
2 I ~roPs euer~ ~ 16.5 ft, wit~n a max, slope ol- $°Io ~tuC~~ c%s.
~D=0,64 , U =4.9 ~, p.s. )
~i rcb D- N C Qas lh S)
l~ rea = 2• B" acres
Fro.,.-, Fey. D-Z, Peak ~isc~arge = 6.$ c.-F.s. ~inc~+ o~ ruhot'F
Dito~ s)ope = 30%
, . Dep~r~ = 0.87 ~+, U = 9, 3 ~,P , s.
To get velocity below 5 f',~.s., i,o,stall Z' water bf/ars or burl~l
ZI d'ro~S every 8 ~~-., Wii'b Q maX. slope G't S°6 between c/r(~,
CD=1.2Z~r, ,U=yr73~,p.s.)
TYPICRL SECTIONS ~ D-I ~ p-y
( J I.SI MAN. _ __ EXIST. G>;ouND
( I
~ INRTE~2 BRAS (2')
`. MRX. SGO-E
EXfSr. GROUND
~2' DROP ~A><. DISTRNC6 f3ET+lEEu QqR~
r-MAX. SwPt
I
N19x. DISTRNCE liETwEE,V Dpopf