PERMFILE107941

• Permit No: C1981008
• IBM Index Class Name: Permit File
• Doc Date: 7/30/2007
• Doc Name: Introduction Old Greystone Approved Hydrologic Monitoring Plan Peabody 1993
• Section_Exhibit Name: Section 2.04.7 Attachment 2.04.7-5
• Media Type: D
• Archive: No

•
Table of Contents
APPROVED H`;'7ROLOGIC.~L MONITORIVG PL~~
FOR THE `iEW =iORiZOIv ~[t`iE '_ ................................... 1
[ntroduc[ion and Summary ................. ...... . ............... L
Edsting Data Review ..................... ...................... 1
Surface Water Monitoring ............ ...................... 1
Groundwater Monitoring ............. ...................... 4
Probable Hydrologic Consequence ........... ..................... 10
Recommended Hydrelogiral Monitoring Pian ... ..................... 13
Satiate Water Monitoring ............ ..................... 14
Groundwater Monitoring ............. ..................... 14
Tables
Table 1 Summary of Baseline Surface Water Monitoring Sites
for the ifew Horiwn Mine 2 ............................... 2
• Table 2 Summary oti Water Quality Data for Surface Water Monitoring Stations
July 1986 to February 1990. .. 3
Table 3 Colorado Water Quality Standards ............................ 5
Table 4 Summary of Groundwater Monioring Wells
for Yucla and Nucla East Mines ........................ . ..... 6
Table 5 Summary of Water Quality Dam For Groundwater Monitoring Stations
July 1986 to February 1990 ................................. 8
Table 6 Water Quality Parameter List -Yew Horizon Mine 2 .............. 13
Appendices
Appendix A Surface Water Flow Data
Appendix B Surface Water Quality Data
Appendix C Surface Water Tnlinear and Stiff Diagrams
Appendix D Groundwater Level Dara
Appendix E Groundwater Qualiry Data
Appendix F Groundwa[er Ttilincar and Sdff Diagrams
Appendix G Weil Completion and Aquifer Test Data
• Attachment 2.04.7-5-3