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 5 of 9
AV -2 (Foidel Creek alluvium.) The
mine's annual hydrology reports
contain long -term data from these
wells. These data show the Foidel
Creek mine is in compliance with
the Basic Standards for Ground
Water at the points of compliance.
11. Sampling frequency
Exhibit 14 of CDRMS
The report indicates all sampling
at surface water
mining permit C -82 -056
YES
frequencies were met.
Based on the approved Table A in
Exhibit 14 of the C -82 -056 mining
permit, the following
discrepancies were found in the
following tables for the 2011
Water Year:
Table 34, Site 8: Temperature
May, Jun, Jul, 4 weeks in Aug, and
first 2 weeks Sep ; Flow March, 1
time Apr
Table 35, Site 900: Temperature
May, Jun, Jul, 4 weeks in Aug, and
first 2 weeks Sep; Flow Mar, 2
times Apr, May, June, July, 4
weeks in Aug and first 2 weeks in
Sep
12. Parameters to be
Table 37, Site 16A: Temperature
sampled at surface
Exhibit 14 of CDRMS
May, Jun, Jul, 4 weeks in Aug, and
water sites
mining permit C -82 -056
NO
first 2 weeks Sep; Flow 3 weeks in
Aug and 1 week in Sep
Table 39, Site 27A: Temperature
May, Jun, Jul, 4 weeks in Aug, and
first 2 weeks Sep; Flow 3 weeks in
Aug and lweek in Sep;
Table 40, Site 1003: Flow 3 weeks
in Aug and 1 week in Sep;
Temperature May, Jun, Jul, 4
weeks in Aug, and first 2 weeks
Sep
Table 42, Site 305: Flow Apr, May,
Jun
Table 43, Site SW13:
Temperature 4 quarters
Table 44, Site SW14:
Temperature 4 quarters, Flow 2
quarters
Table 45, Site SW15: Temperature
4 quarters, Flow 2 quarters