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daylighted ends of the trench segments and the application of mulch to the outslopes of constructed berms. Tn addition, temporary erosion control measures consisting of berm construction, silt fence installation, and straw bale .placement were utilized during the construction period. The Yampa Valley Electric Association powerlines and substation installation along Routt County Road # 27 were visually inspected on a periodic basis. No repairs to the powerlines or substation were required during this mining activity. Weekly visual monitoring of the substation installation commenced when the longwall face advanced to within 500 feet of the substation. The monitoring frequency accelerated to a daily frequency when the longwall face advance to within 100 feet of the substation. Daily inspections continued for two weeks after the longwall undermined the substation. Weekly inspections continued until subsidence effects in the general vicinity were no longer observed to occur. No monitoring is planned for any of the dwellings, except that the employee was advised when that dwelling will be undermined. The employees were provided three to six months notice of when mining occurred under the dwelling. Archeological site SRT345 was the focus of an extensive investigation performed by Metcalf Archaeological Consultant, Inc., during the period of late ]une, 1994 through mid-September, 1994. The results of their investigation, are presented in Exhibit6c-1. Southwest Panels 2 and 3 Extension Additional monuments were installed over the 2 southwest panel, as shown on Map 23A, in order to verify that subsidence resulting from the mining of this panel did not extend into the Fish Creek Alluvial Valley floor. The ~onuments, were constructed as per TCC's approval plan, were installed prior to longwall mining of the panel. e monuments were monitored on a quarterly frequency until hvo successive monitoring episodes show no significant difference of the measured subsidence. When no long required for the mining operation, the monuments will be removed. The subsidence data generated from this line has been included in the semi-annual subsidence reports. All monuments were installed prior to mining in a particular location. Monuments were surveyed quarterly, but severe winter conditions may preclude surveying monuments in hazardous or inaccessible areas. Reports were submitted to the DMG semi-annually. APPfi3L~~lE~ APP 2 4 2007 Permit Renewal No. 3 2.05-188 1/15/00