PERMFILE106508

• Permit No: C1981039
• IBM Index Class Name: Permit File
• Doc Name: Map AB-1 Pond 4 Design As-Built Came w/11/20/92 Letter
• Section_Exhibit Name: Reclamation Project Binder
• Media Type: M
• Archive: No

INVERT OUT = 7529.88' -\
EMERGENC Y SPILL WAY A
INVERT ELEVATION = 7548.5' - \
RIPRAP - 050 = 9" \ -- __ . - - --
30" CMP - - _ 25 YR, 24 ,HR EVENT
ELEVATION = 7548.8
-.--- ----- - - - -__ - - -- _ -_ /O YR, 24 HR EVENT
-_ 7540 �_ - `__ - - -- - -- -� ELEVATION = 7546.9
�- - -- TOP OF EMBANKMENT = 7550.0
J - -- ._ - - - -- -
O
DITCH 4 -2 `
CL RIPRAP Z
7548.45__ 7540 �- - -- \
SE
---... ... 7550
CA PA Cl T Y TA BL E
- - --- - - - - --
- - -- - - - - - -- - -
- RIPRAP D50 = 12" 7560
PRINCIPAL SPILL WA Y I4" DE WA TERING ORIFICE/
INVERT ELEVATION 754 0. 0 `- RIPRAP - 550 = 12'
�- TOP OF 4' CMP RISER = 7548.1'
E
7560 - i
0
7540-
7520
EMERGENC Y SPILL WA Y -
INVERT EL EV = 75485'
NA TURAL
GROUND I
R
30" CMP -
SEDIMEN TA FION POND No. 4
PL A N VIEW
SCALE: i " =30'
CONTOUR INTERVAL: 2'
TOP OF EMBANKMENT
ELEV = 7550.0' /
FREEBOARD
BOTTOM OF POND
ELEV. = 7536.0'
/60
TOP OF RISER
EL EV. = 7548.1'
PRINCIPAL SPILL WA Y
I4 " DEWA TERING ORIFICE/
ELEV. = 7540.0'
25 YR / 24 HR EVENT
ELEV" 7548.8'
-z. - -7: - ------------- -
120
SEDIMEN TA TION POND No
CROSS SECTION A -A '
HORIZONTAL SCALE: 1 "=20'
VERTICAL SCALE., 1 " =20'
E
/0 YR / 24 HR EVENT
EL EV. 7546.9'
DESIGN SEDIMENT LEVEL
EL EV. 754 0.0'
0 160
A'
FREEBOARD
-114 -I I-
LU
IL_ r 3
--'RIPRAP
BW IWHERE REOU/REDI
I�H�Y�LT��I
SEDIMENTATION POND No. 4
CHA NNEL DESIGN
r
w
w
c�
N
0 0.5 I,n 1.5 2.0 2.5 3.0 15 4.0 4.5 5.0
STORAGE (AC-FT)
SE -DIMEN TA TION POND No. 4
STAGE / S FORA GE- CURVE
NOTE: TO CONVERT POND 4 TO A STOCK
POND THE DEWATERING ORIFICE SHOULD BE
PLUGGED AND A NEW DEWA TERING ORIFICE
PLACED AT AN ELEVATION OF 7544.5'
RECEIVE.E;
NOV 2 3 1992
DIVISIUI� ,JI-
MINERALS & GEOLOGY
PROFESSIONAL ENGINEER'S STATEMENT
I, Patrick G. Corser, state that this map
W05 prepared under my supervision and alt
the information presented hereon is true
and correct to 9h,e be / %%� know /edge
and informot' \����� 111- ON01,9
moo
Dote Patrick =_G.. c,oTVAK C4 P. E. 284
/2 AS- BUILTS II/92 KLC PGC
DESIGN MODIFICATIONS 11/91 TWS MSC
No. REVISION DATE BY CHKD
THE ROCKCASTLE COMPANY
GRASSY CREEK COAL MINE Nod
POND 4 DESIGN
SCale: Date: Design By: Drawn By: Approved By:
A. N. 10191 TEL TWS TEL
ACZ)nc MAP AB-1
ENGWEERING MID ENVIRONMENTAL SERVICES
STEAMBOAT SPRINGS, CO 80477
DES /ON
CHANNEL
BOTTOM
FLOW
FREE-
RIPRAP
CHANNEL
FLOW
S LOPE
W/OTM
MANN /NGS
D£P7 k
BOARD
VEL OCITY
050
�
SEC rI<N
;CFSI
iY/
9W /FLl
N
:tFT;
IF T,I
/FPS"
11NCHESI
EMERGENCY SPILLWAY
5.5
2.0
1.035
^'.35
I.2
2.6
9
DITCH 4 -1 INLET
9.43
11.0
3.5
0 035
J .._
5.97
12
DITCH 4 -2 INLET
14.131
:6.0
3 5
.:.035
'.8
12
SEDIMENTATION POND No. 4
CHA NNEL DESIGN
r
w
w
c�
N
0 0.5 I,n 1.5 2.0 2.5 3.0 15 4.0 4.5 5.0
STORAGE (AC-FT)
SE -DIMEN TA TION POND No. 4
STAGE / S FORA GE- CURVE
NOTE: TO CONVERT POND 4 TO A STOCK
POND THE DEWATERING ORIFICE SHOULD BE
PLUGGED AND A NEW DEWA TERING ORIFICE
PLACED AT AN ELEVATION OF 7544.5'
RECEIVE.E;
NOV 2 3 1992
DIVISIUI� ,JI-
MINERALS & GEOLOGY
PROFESSIONAL ENGINEER'S STATEMENT
I, Patrick G. Corser, state that this map
W05 prepared under my supervision and alt
the information presented hereon is true
and correct to 9h,e be / %%� know /edge
and informot' \����� 111- ON01,9
moo
Dote Patrick =_G.. c,oTVAK C4 P. E. 284
/2 AS- BUILTS II/92 KLC PGC
DESIGN MODIFICATIONS 11/91 TWS MSC
No. REVISION DATE BY CHKD
THE ROCKCASTLE COMPANY
GRASSY CREEK COAL MINE Nod
POND 4 DESIGN
SCale: Date: Design By: Drawn By: Approved By:
A. N. 10191 TEL TWS TEL
ACZ)nc MAP AB-1
ENGWEERING MID ENVIRONMENTAL SERVICES
STEAMBOAT SPRINGS, CO 80477