Laserfiche WebLink
• Determination of baseline surface and ground water quality and quantity conditions <br />• Identification of normal seasonal and areal variations in baseline levels <br />• Definition of the relationship between surface and ground water systems <br />• Definition and evaluation of potential mining related impacts on the area hydrologic system <br />• Identification and evaluation of protection and mitigation measures <br />• Evaluation of the significance of potential mining related impacts given the factors of baseline <br />conditions, hydrologic connection, mitigation measures, relative contributions, time constraints and <br />water use permits. <br />It should be noted that discussion of PHC does not imply actual adverse impacts. Generally, the PHC discussed <br />will not have any long -term adverse effects on the area hydrologic balance. The scope and analysis of PHC <br />predictions has focused on quantifying the impacts that may be expected to occur based on our understanding of <br />the site hydrology. These predictions will be re- evaluated as observed effects are measured by the on -going and <br />proposed monitoring program as described in Exhibit 14, Hydrologic Monitoring Plan. <br />For purposes of the hydrologic discussions, the present and future mining area has been subdivided into mining <br />districts. <br />• North Mains and portal area (NMS) <br />• 1 -South Panel, Southwest Mining District (Panels 1 -SW to 3 -SW) and the South Panels (Panels 1 -Left <br />to 6 -Left): the Southwest Mining District (SWMD) <br />• Panels 2 -Right to 9- Right: Eastern Mining District (EMD) <br />• Reserves north of the EMD: Northern Mining District (NMD) <br />• Reserves north and west of the SWMD: Western Mining District (WMD) <br />• The Wolf Creels Reserves (WCR) <br />The projected ground and surface water monitoring plan has been designed to detect impacts to these respective <br />systems. TC will continue to monitor these systems as presented in Exhibit 14. <br />The North Mains presently extend to the northern limit of the SWMD, the EMD, and the NMD. Mining in the <br />SWMD was completed in 1996, the EMD in early 2001, and the NMD in late 2009, and these areas were <br />subsequently sealed. The analysis of subsidence effects due to longwall mining on the surface and ground water <br />hydrology in the study area is based on the site - specific morphologic, hydrologic, and hydrogeologic <br />characteristics. The results of the subsidence analysis presented in Exhibit 7E, Prediction of Subsidence, <br />Eastern Expansion at the Foidel Creek Mine, Exhibit 4e -3, Prediction of Subsidence, NMD, and monitoring data <br />documenting actual subsidence effects were used in the initial assessment and subsequent reviews of the effects <br />on hydrology. <br />TR13 -83 2.05 -132 11/03/14 <br />