2011-03-25_PERMIT FILE - C1981019A ‎(6)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 3/25/2011
• Doc Name: Hydrology South Area
• Section_Exhibit Name: Map 12
• Media Type: M
• Archive: Yes

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LEGEND
PERMIT BOUNDARY Note: For Culvert, Ditch, and pond sizing information,
SECTION LINE see "Hydrology Information ", Exhibit 7.
DRAINAGE BOUNDARY N
Note: See Map and
O for Profiles of
DRAINAGE NAME
Permanen Chann
DISTURBED LANDS AS OF DEC. 2009
Note: See Map 41 for Permanent Channel Locations W E
and Drainage Boundaries on Postmining Surface.
TEMPORARY DRAINAGE DITCH
PERMANENT POSTMINING DRAINAGE DITCH, CONSTRUCTED
PERMANENT POSTMINING DRAINAGE DITCH, FUTURE
SMALL AREA EXEMPTIONS
• K POSTMINE SMALL IMPOUNDMENTS
SEDIMENTATION PONDS
S
500' 0 500' 1000'
CONTOUR INTERVAL 25 FT.
FLIGHT DATE MAY 2010
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HYDROLOGY
South Area
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SCALE. 1" = 500'
DATE. 11104105
O DRWG. BY.. TCP
Colowyo Coal Company APPROVED BY. T.A.T.
5731 State Highway 13
Meeker, Colorado 81641 DRWG NO.
Owe c - IR?7 12
�5 II /I
No. REVISION DATE BY CHK
MR Permit Boundary Update, topo update 10108107 T.A.T. T.A.T.
90
TR Sec. 16 Ditch Extensions 03125108 TCP TAT
71
TR Added five sediment control structures in the East Pit/Prospect watershed.
87 Updated topography, facilities and logo, Revised East PR North Tributary 8109110 RMP KRB
East Pit and Prospect ditches to show current states of construction.
TR
'faViSea alignment or ower portion or o no, Fast Pit i per rei .
odified ditch stationing. Removed outdated Sec. 16 pit limit, updated disturbed 9121 /10 TCP KRB
87 and hatch, fixed Sec. 16 Pond ditch alignment. Revised elignmem of the Prospect
final East Pit ditches for stock tanks. Modrfied ditch stationing. 17/3/10
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ENGINEER'S CERTIFICATION
18
17
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1
1, THOMAS C. PETERSON, being a
T
Licensed Professional Engineer in
the State of Colorado, do hereby
19
20
22
23
24
4
certify that this map has been
QT
N
reviewed by me and is true and
correct to the best of my knowledge
30
29
25
and information relying on work
performed by others and based on
31
32
35
36
information supplied by experts
identified in section 2.03.3 of the
Colowyo Coal Company L.P. Permit.
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p /ON
THOMAS C PETE
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SON
P.E. No. 32257
R 93 W
DATE
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HYDROLOGY
South Area
e 0c1'
. v rift sr
SCALE. 1" = 500'
DATE. 11104105
O DRWG. BY.. TCP
Colowyo Coal Company APPROVED BY. T.A.T.
5731 State Highway 13
Meeker, Colorado 81641 DRWG NO.
Owe c - IR?7 12
�5 II /I
No. REVISION DATE BY CHK
MR Permit Boundary Update, topo update 10108107 T.A.T. T.A.T.
90
TR Sec. 16 Ditch Extensions 03125108 TCP TAT
71
TR Added five sediment control structures in the East Pit/Prospect watershed.
87 Updated topography, facilities and logo, Revised East PR North Tributary 8109110 RMP KRB
East Pit and Prospect ditches to show current states of construction.
TR
'faViSea alignment or ower portion or o no, Fast Pit i per rei .
odified ditch stationing. Removed outdated Sec. 16 pit limit, updated disturbed 9121 /10 TCP KRB
87 and hatch, fixed Sec. 16 Pond ditch alignment. Revised elignmem of the Prospect
final East Pit ditches for stock tanks. Modrfied ditch stationing. 17/3/10
Um
15 D
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20 hQ
1 J
25 C:)�
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