2015-11-23_GENERAL DOCUMENTS - C1982056

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2.04.7 Baseline Hydrologic Conditions A review of surface water related sections of Rule 2.04.7 was conducted. The following questions pertain to Exhibit 32: 15. Describe to what extent Foidel Creek Mine has been able to improve winter water quality and quantity data collection in affected reaches of the Yampa as related to conclusions 1 a, b, and c drawn in Exhibit 32. 16. Describe to what extent a review and update of site-specific regression functions as per conclusion 2 has been undertaken. 17. Please state if additional nodes in the streamflow system have been added or modified. If additions or modifications occurred, please state through what permitting action changes were made. (Conclusion 3). 18. Please state if a critical review of stream standards, as per conclusion 4 has taken place. 19. If a review of stream standards occurred please describe the results of this review and cite, or submit to DRMS, the pertinent document. 20. Baseline characterizations of the Wadge Coal/Wolf Creek Coal Interburden and the Wolf Creek Coal Seam were established with the approval of TR -83 as well as the Wolf Creek Reserve monitoring plan in Exhbit 14A. The development of the Wolf Creek Reserve has lowered the poteniometric surface elevation in the Wadge overburden. Figure 06s Potentiometric Surface Wadge Coal Overburden and Figure l Id Wadge Overburden Potentiometric Surface and TDS Foidel Creek Mine -7- 11/23/2015 Protection ID Source NRHP Needed Protection Measures Exhibit 06, No mining under or in the vicinity of 5RT192 1984 Report Listed Yes the resource. RN -06 5RT345 I Findings Eligible Not Applicable Approved to be disturbed by PR -02 Avoid - Controlled 5RT162 Exhibit 06I Needs Data subsidence Assessed for subsidence impact Corridor was re -aligned to avoid site. 5RT30 Exhibit 06H Eligible Yes - Avoid (MR 139). Exhibit 06L; Two track road to 22 -RT well passes Metcalf through site. No additional ground 5RT3256 October 2013 Needs data Yes disturbance is allowed. Exhibit 06L; Metcalf August 5RT3275 2014 Eligible Yes - Avoid Avoid No vehicle traffic and ground disturbance activities. Drive around 5RT1648 Exhibit 06P Needs Data Yes - Avoid current graded road to the south. Avoided by additional activities that Yes - Avoid impact undisturbed areas. Existing additional surface maintenance can continue without 5RT993 Exhibit 06P Needs Data impact impacting site. This site was re-evaluated. A portion of the site which could have research potential should not be impacted by 5RT487 Exhibit 6T Needs Data Yes - Avoid conveyor construction. 2.04.7 Baseline Hydrologic Conditions A review of surface water related sections of Rule 2.04.7 was conducted. The following questions pertain to Exhibit 32: 15. Describe to what extent Foidel Creek Mine has been able to improve winter water quality and quantity data collection in affected reaches of the Yampa as related to conclusions 1 a, b, and c drawn in Exhibit 32. 16. Describe to what extent a review and update of site-specific regression functions as per conclusion 2 has been undertaken. 17. Please state if additional nodes in the streamflow system have been added or modified. If additions or modifications occurred, please state through what permitting action changes were made. (Conclusion 3). 18. Please state if a critical review of stream standards, as per conclusion 4 has taken place. 19. If a review of stream standards occurred please describe the results of this review and cite, or submit to DRMS, the pertinent document. 20. Baseline characterizations of the Wadge Coal/Wolf Creek Coal Interburden and the Wolf Creek Coal Seam were established with the approval of TR -83 as well as the Wolf Creek Reserve monitoring plan in Exhbit 14A. The development of the Wolf Creek Reserve has lowered the poteniometric surface elevation in the Wadge overburden. Figure 06s Potentiometric Surface Wadge Coal Overburden and Figure l Id Wadge Overburden Potentiometric Surface and TDS Foidel Creek Mine -7- 11/23/2015