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• Introduction <br />This report covers the 2001 period from April 2001 to July 2001. Mine Construction of the <br />Bowie No. 2 Mine began during May of 1997, with coal production beginning during August <br />1997. <br />The mining permit application for the Bowie No. 2 Mine requires the operator to submit the <br />results of the subsidence monitoring programs and the results of the visual inspections of known <br />modem and historic landslides within the permit and adjacent azea for stability in June and <br />December of each year and report these results to the Division within 30 days of the ends of the <br />reporting periods. <br />The operator is also required to inspect these landslides, both modern and historic monthly for <br />six months immediately after retreat mining occurs. This same inspection routine is applied to <br />any spring or pond in the immediate proximity of retreat mining. <br />Visual Inspection of known historic and modern landslides. <br />A visual inspection of all known historic and modem landslides was conducted during June 2001 <br />by David A. Jenkel, 2768 Compass Drive, Suite 101, Grand Junction, CO 81506. No new or <br />rejuvenated landslides were found during this inspection. <br />Increased Inspection activity associated with retreat mining. <br />• Pond 2 (P-2) and Spring 13 (5-13) fall within the area affected by retreat mining during the 2000 <br />Results of Subsidence Survey Monitoring <br />The results of 2000 monitoring aze attached. They were performed by Cragg Surveying using <br />GPS methods. The results of the June 2001 monitoring event are not yet compiled by Cragg <br />Surveying and will be forwarded to the Division when available. <br />monitoring season and therefore increased inspection activity occurred. However, Spring 13 has <br />not exhibited a flow since April 1997 and Pond 2 is perennially dry. Pond 2 was cleaned out <br />during the building of a drill road during 2000 and has remained dry throughout 2001. <br />Subsidence cracks developed across the roadway to DH-13 after the mining in the Dl panel <br />occurred. Subsidence cracks developed across the roadway to GVB-D-3A after mining the D2 <br />and D3 panels. Photographs of these more recent subsidence cracks are attached to this report. <br />Accessible subsidence cracks were repaired and aze monitored as Spring 13 is monitored. No <br />other hydrologic monitoring points have been undermined during this period. <br /> <br />