2016-09-30_PERMIT FILE - C1981020A ‎(2)‎

• Permit No: C1981020A
• IBM Index Class Name: Permit File
• Doc Date: 9/30/2016
• Section_Exhibit Name: 2.0 Mine Plan
• Media Type: D
• Archive: Yes

2.6 Ground Water Monitoring
A water quality monitoring program has been established to monitor the effects of the McClane
Canyon and Munger Canyon mines on ground water in the area. The ground water monitoring
program will consist of the following observations, measurements and sampling:
1. Quarterly monitoring of wells, GW-1 and GW-3 for Static Water Level, pH,Temperature, and
Specific Conductance.
2. Water quality sampling of mine water discharges as required by CDPS permit.
3. Monitoring of all non-seep inflows into the mine to include source,quantity,duration and
quality(pH, Electrical Conductance, and Temperature).
4. Monitor quantities of water discharged from the mine,consumed in the mine,and imported
for use in the mine.
Results of the quarterly ground water monitoring shall be submitted to the Division immediately
after data collection and analysis except during temporary cessation. Results of additional
monitoring will be submitted to the Division in an annual hydrological report. The annual report
will detail inflows,discharges and consumption of water within the mine and shall be structured
around the normal "water year" (October 1 through September 30).
Water samples will be collected with a bailer after the depth to water table has been measured. All
monitoring wells shall be pumped at least once a year and prior to sample collection with an air lift
or a bailer.
Monitoring well GW-6, as shown on Figure 2.3-5,was installed and has been sampled as required
prior to the construction of the Munger Canyon Waste Rock Pile. Water quality samples shall be
taken and water levels established quarterly. Analysis will be for the above noted parameters.
On March 20, 1984 the Division approved a revision to sample GW-6 in Munger Canyon only during
the period of temporary cessation. Since GW-6 has been dry since installation, well GW-3 was
substituted and monitored quarterly for Static Water Level, pH,Temperature and specific
Conductance.
Since both GW-5 and GW-6 have been dry during all monitoring events,they will be sealed during
2016.
Monitoring well GW-7 is located at a location where the Operator once proposed a coal mine waste
disposal area. GW-7 was first noted to contain water in 1987. The conductivity of the water was in
excess of 100,000 umhos/cm.
The Location of GW-3 on Figure 2.3-5 changed slightly, based on GPS data gathered February 10,
2006. Right of entry for GW-3 &GW-5 is presented in Appendix C, Exhibit 3.GW-2,4, 7 and 8 were
sealed in 2007. See Appendix P for abandonment reports.
TR-27 2-30 09/16