REP33838

• Permit No: C1981019
• IBM Index Class Name: Report
• Doc Date: 3/16/2005
• Doc Name: 2004 AHR Section 1
• From: Colowyo Coal Company L.P.
• To: DMG
• Annual Report Year: 2004
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Cq/owyo /!//ine
DATE: 8/25/04
~~
ANNUAL IMPOUNDMENT INSPECTION
NPDES PONDS AND OTHER HOLDING PONDS

m undment Name Erosion, Instahillty,
Slmciurei Weakness,
Hazardous Candillons
4.05.9 9 a
Monitoring procedures
and Instrumentation
4.05.9 1 h
Depth of
Impounded Waters
4.05.9 15 c
Elevation of
Impounded Waters
4.05.9 15 c
Existing Storage
Capacity
4.05.9 15 tl
Other Structural Instability
or Maintenance Required
4.05.9 15 a
Experienced
Impoundment
Ins actor 4.05.914
Dafe
Of
Ins action
Streeter Pond - 001A Nona Ortly, Annual Insp. -0.fi fl. 6582.6 ft 0.67 ac-fl. None K. Blunt/J. Pickarts 825/04
Work Area Sediment Pond 1002A Nane Odty, Annual Insp. 2.2 ft. 7148.2 R. 7.31 ac-It. None K. BIunUJ. Pickads 825/04
Gossard Pond - 003A ~ None Ortly, Annual Insp. 1.3 R. 6385.5 fl. 1.11 ac-R. None K. Blunt/J. Pickads B/25/O4
Gulch APond - OO4A None Qrtly, Annual Insp. 8.011 6613.0 fl. 4.06 ac-ft. None K. Blunt/J. Pickads 8/25/04
Stoker Siding Pond - OOSA None Or1iy, Annual insp. 2.9 R, 6324.8 fl. 0.56 ac-R. None K. Blunt/J. Pickads 8/25/04
Rail Loop Pond - OOfiA None gdly, Annual Insp. 4.5 ft. 6348.5 R, 0.47 ac-fl. Will he dredged Oct. 200q K. Blunt/J. Pickads 825/04
Prospect Pond - 007A Nane Ortly, Annual Insp. 7.5 fl 6741.5 R. 1.27 ac-R. None K. BIunVJ. Pickads 8/25/04
West Pil Pond - OOBA None Odly, Annual Insp. 0.1 ft. 8821.1 R. 4.7 ec-fl. None K. BIunVJ. Pickads Bl25f04
Section 76 Pand- 009A Nona Odly, Annual Insp. 4.8 R. 7744.8 R. 1.16 ac-tt. None K. Blunt/J. Pickads 8/25/04
East Taylor Pond - 010A None Ortly, Annual Insp. 8.8 R. 6938.8 1.97 ac-fl. None K. Blunt/J. Pickads 825/04
Taylor Pump Holding Pond None Only, Annual Insp. 4.0 R, 6553.0 R. 3.5 ac-ft. None K. BIunVJ. Pickarts 8!25(04
Evaporation Pond Nodh None Ortly, Annual Insp. 0.4 R. 7199.4 R. 5,1 ac-(l. Nona K. Blunt/J. Pickads 825/04
Evaporation Pond South Nona Ortly, Annual Insp. Dry Dry 4.2 ac-R. None K. BIUnVJ. Pickarts 8/25/04
Aeration Pand None Ortly, Annual Insp. 9.0 h. 7212.0 R. 4.1 ac-R. None K. BIgnVJ. Pickarts 825/04
Sediment Sump None Odly, Annual Insp. 8.5 R. 7238.5 R. 1.48 ac-ft. None K. BluntlJ. Pickads 9/25I0A
Washhay Pond - 0028 None Ortly, Annual Insp. 5.0 fl. 7201.0 R. 15.65 ac-ft. None K. BIunUJ. Pickarts 8/25/04
Signed: kr-rT~S Qtu~I~- o p Date: aSizS~~Y
I am a Registered Profession ~Oa~~M f Colorado and a representative of Knight Piesold and Co., 1050 Seventeenth Street, Suite 450, Denver, Colorado 80265-2011.
The information contained' ~$rt9 d by Colowyo Coal L.P. Being familiar with the Colowyo operation and the coal permitting process in Colorado, the information
contained herein ~ rea mac to'jtest my experience.
ef~ ~ -
Certified B ~ ~ Date: S ~ /°y
.r._ ~____..._~.
Colorado Registered P.E.
fi9N1
LF 21.1.2
Nate: (d) impoundment volumes are estimated from pre-existing as-huilt surveys,
CF 17.142004 RaWSed Brd5Qpp0 and estimates of accumulated sediment.