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Introduction <br />This report is for period from January 2005 through June 2005. Mine Construction of <br />the Bowie No. 2 Mine began during May of 1997, with coal production beginning during <br />August 1997. <br />The mining permit application for the Bowie No. 2 Mine requires the operator to submit <br />the results of the subsidence monitoring programs and the results of the visual <br />inspections of known modem and historic landslides within the permit and adjacent <br />area for stability in June and December of each year and report these results to the <br />Division within 30 days of the ends of the reporting periods. <br />The operator is also required to inspect these landslides, both modern and historic <br />monthly for six months immediately after retreat mining occurs. This same inspection <br />routine is applied to any spring or pond in the immediate proximity of retreat mining. <br />Longwall mining during the period included completion of the WD3 panel and mining in <br />the B1 panel. <br />Visual Inspection of known historic and modern landslides. <br />A visual inspection of all known historic and modern landslides was conducted during <br />May and June 2005 by J. E, Stover, 2352 North 7"' Street, Grand Junction, CO 81501. <br />No new or rejuvenated landslides were found during this inspection. These sites are <br />• also regularly inspected by Bowie personnel during gob vent borehole construction and <br />reclamation efforts. No new subsidence cracks were identified during the reporting <br />period. <br />Increased Inspection activity associated with retreat mining. <br />Accessible subsidence cracks are repaired during coal exploration events and are <br />monitored by both coal exploration supervisors and hydrologic monitoring technicians. <br />The accessible visual results of the subsidence effects associated with the Bowie No. <br />Mine are overlain on Map 27 - B Subsidence Monitoring. Map 27-B is not enclosed <br />since there are no new subsidence features to depict. During this period, no hydrologic <br />monitoring points were impacted or re-impacted by mining activities, Potentially <br />impacted or re-impacted means the mine workings or angle of draw of the mine <br />workings passed under the monitoring point during the reporting period. No influence <br />to any hydrologic monitoring points was observed during this period. <br />Results of Subsidence Survey Monitoring <br />The results of the April and May 2005 monitoring are attached. Subsidence <br />monuments along Hubbard Creek were surveyed on April 10"'. Subsidence <br />monuments above the west longwall panels were surveyed during Map 9"' and 10~'. As <br />in the past, the survey was performed by Cragg Surveying using GPS methods. <br />Analysis of Subsidence Data <br />The following table presents an analysis of the subsidence survey data. There are no <br />