2014-05-14_REPORT - C2009087

• Permit No: C2009087
• IBM Index Class Name: Report
• Doc Date: 5/14/2014
• From: DRMS
• To: Peabody Sage Creek Mining, LLC
• Annual Report Year: 2013
• Permit Index Doc Type: Hydrology Report
• Email Name: JDM
• Email Name: DIH
• Media Type: D
• Archive: No

Peabody Sage Creek Mining, LLC
Page 7
0514/2014
seasonal water level fluctuations in response
to periods of precipitation or lack thereof.
Spoil well water levels indicate that down
slope highwall portions of the spoil exhibit
significant amounts of saturation.
21. Prevention of
CDRMS regulation
Underground development at the PSCM began
impacts to ground
4.05.11(2)
during the 2011 water year with no
water that
development work or mining being conducted
adversely impact
in the 2013 water year. Due to the premature
post- mining land
mining process, prevention of impacts to
use
groundwater cannot be determined as of the
date of this review.
22. Minimize
CDRMS regulation
The disturbance to the hydrologic balance
disturbance to
4.05.1(1)
within and adjacent to the permit area caused
hydrologic balance
by mining and reclamation at the PSCM is the
within and adjacent
minimum that can be expected from a
to the permit area
reclaimed surface mine at this location. Use
of best management practices indicates
minimization of disturbance to the hydrologic
balance.
No determination has been made concerning
Item no. 7 mentioned above. An investigation
by the CDPHE and Peabody Sage Creek Mining
as to the cause of the elevated selenium
measurements is ongoing. Should it be
determined that these exceedances are due to
impacts permitted under the current mine
plan, revisions to the PHC may need to be
required.
23. Prevention of
CDRMS regulation
Surface water - No surface water impacts due
material damage to
4.05.1(1)
to mining have occurred. Note Item No. 22
the hydrologic
above
balance outside the
permit area
Ground water - No material damage has