2013-04-10_PERMIT FILE - C1981019 ‎(73)‎

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 4/10/2013
• Doc Name: Temporary Channel Design
• Section_Exhibit Name: Volume 18 Exhibit 7 Item 23 Figure E1
• Media Type: M
• Archive: No

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LEGEND
SECTION LINE
PROPOSED V DITCH
- TRAPEZOIDAL DITCH
PROPOSED CLEAN WATER TRAPEZOIDAL DITCH
TEMPORARY OVERBURDEN
STOCKPILE OUTLINE
PMT TIE -IN
FUTURE PIT MINING LIMITS
TOPSOIL STIPPING 6 MONTHS
NOteS: The worst case condtition reflects the
extent of clearing topsoil and stripping
on all disturbed areas at 6 months from
commencement of construction.
Watershed boundaries are shown on Exh. 7 -23 Figure Al.
SEDCAD modeling of these ditches is provided in Exh. 7 -23 Part A.
See Map 23B for the location of the ditches relative to other
Collom mining activities. See Exh. 7 -23 Figure E2 for profiles.
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ENGINEER'S CERTIFICATION I
1, THOMAS PETERSON, being Item 23 ry
Licensed Professional C
Exhibit 7, , -Figure El
/
fessional Engineer in J
N the State of Colorado, e Temporary Channel Design
certify that this map has s be been n
reviewed by me and is true and
correct to the best of my knowledge SCALE: r- = 1000-
and information relying on work DATE. 12115110
performed by others and based on DRWG. BY. RWr
information supplied b experts Colowyo Coal Company APPROVED BY. TcP
E PP Y xP 5131 Hare Hi9nwey 13
identified in section 2.03.3 of the y Meeker, cmoaao 81641
Colowyo Coal Company L.P. Permit.
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S 0 Lf Fp�G C ip$�Z�Z��i7 tun, y-ID'
O ,S • PFt 2J i� No. iv9ir¢tt'1Q's.1 DATE BY CHK
0 t000 2000 U ' 32257 Pz : o PR03 NEW MAP 12115170 TCP KRB
9I23/N;'
0,<\ PR03 PMT Tie -in boundary change, ditch edits 3125111 TCP KRB
Contour Interval 25 FT. ��i FS �'•• " G� ��
TOPO: Premine Topography i�rS TONAL`` PR03 PMT Tie -In boundary change, Temporary 5120111 TCP KRB
@�x Overburden Stockpile outline and Ditch edits.
THOMAS C PETERSON
P.E. rlyyoo. 32257 PROS Added Modified Little Collom Sump 8104111 TCP KRB
'F 23 /rl
DATE PRO3 Updated Permit Boundary, Added No Disturbance boundaries,
and Deleted LCW ditch. 8123111 TCP KRB