2012-03-27_REPORT - C1982056

• Permit No: C1982056
• IBM Index Class Name: Report
• Doc Date: 3/27/2012
• Doc Name: 2011 Annual Hydrology Report Review
• From: DRMS
• To: Twentymile Coal Company
• Annual Report Year: 2011
• Permit Index Doc Type: Hydrology Report
• Email Name: JDM
• Email Name: DIH
• Media Type: D
• Archive: No

Page 6 of 9
Table 46, Site 301: Temperature
Mar, Apr, May, Jun, Jul, Aug, and
Sep; Water Quality Apr, and May
Table 47, Site 69: Temperature
Mar, Apr, May, Jun, Jul, Aug, and
Sep; Flow Apr, May, Jun;
Table 48, Site 1005: Temperature
Mar, Apr, May, Jun, Jul, Aug, and
Sep; Flow Jun;
Table 49, Site 29: Temperature
Mar, Apr, May, Jun, Jul, Aug, and
Sep
13. Filing frequency of
CDRMS regulation
pond reports
4.05.9(17)
YES
14. Timely filing of
CDRMS regulation
pond reports
4.05.9(17)
YES
15. Content of pond
CDRMS regulation
reports
4.05.9(15)
YES
16. Sampling frequency
Exhibit 14 of CDRMS
No information was provided for
of ground water
mining permit C -82 -056
NO
AVM -15 in the AHR
monitoring wells
17. Parameters to be
Exhibit 14 of CDRMS
No information was provided for
analyzed in ground
mining permit C -82 -056
NO
AVM -15 in the AHR
water samples
Surface facilities and underground
workings of the Foidel Creek Mine
19. Restoration of
lie downhill from the outcrop belt
ground recharge to
CDRMS regulation
that rims the Twentymile Park
approximate pre- mining
4.05.12(3)
YES
Syncline. Ground water is
recharged in this outcrop belt.
rate
The mine has not disturbed the
rocks in this outcrop belt which
does not diminish the amount of
recharge.
Compliance with the Basic
Standards for ground water, as in
20. Prevention of
item 10, indicates the permittee is
adverse impacts to
CDRMS regulation
preventing adverse impacts to
ground water systems
4.05.11(1)
YES
ground water quality outside the
outside permit area
permit area. Monitoring data
indicate the permittee is
preventing impacts to water
quantity outside the permit area.