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stations 94, 96, 97 and 98 required new stations to be established. The June 2003 <br />survey data indicates an elevation loss of 0.05 feet when compazed to the <br />November 2001 elevation. <br />Station 82 Grosse-Rhode Ranch Site. This station was created in 1996 by UTE Engineering <br />and Surveying Company to replace previous Station 96. Discrepancies concerning <br />stations 94, 96, 97 and 98 required new stations to be established. The August <br />2002 survey data indicates an elevation loss of 0.03 feet when compazed to the <br />November 2001 elevation. <br />Station 83 Grosse-Rhode Ranch Site. This station was created in 1996 by UTE Engineering <br />and Surveying Company to replace previous Station 97. Discrepancies concerning <br />stations 94, 96, 97 and 98 required new stations to be established. No survey data <br />was reported for this site during 1998. The June 2003 survey data indicates an <br />elevation loss of 0.14 feet when compazed to the November 2001 survey. <br />Pitlcin Mesa Pipeline <br />Seven subsidence monitoring stations were established at locations along the Pitkin Mesa Pipeline <br />which overlies Panel C. Panel C development commenced in October with twenty-four crosscuts <br />completed by January 1, 1993. Panel C was mined utilizing a partial extraction design intended to <br />preclude the development of subsidence in order to protect the pipeline. The subsidence <br />monitoring stations along the pipeline aze depicted on Map No. 2-SA. The stations were <br />surveyed twice in 2003; June 20 and December 24. The results of this survey is appended to this <br />report. The 2003 survey was conducted by Cragg Surveying. The Cragg survey will provide <br />consistent survey values in the future which will show that this azea is stable. Surveys will <br />continue approximately semi-annually until stability is documented. <br />Visual Monitoring 2003 <br />Visual subsidence monitoring is accomplished by periodic "walkovers" of recently mined azeas <br />within the present permit azea. Walkovers aze generally done in conjunction with survey <br />monitoring due to the seasonal accessibility of the azea. During the 2003 monitoring season, <br />visual monitoring consisted of visual inspections done while performing survey monitoring and <br />water monitoring. <br />Visual monitoring is concentrated over azeas of retreat mining with particulaz emphasis on azeas <br />mined under low overburden. Since the mine has now been idled in excess of 5 years, there aze <br />no azeas of particulaz emphasis on which to concentrate visual inspections. <br />Projected Subsidence Impacts - 2003 <br />Subsidence impacts during 2003 are projected to be minimal based upon subsidence patterns <br />established to date. No mining is currently projected for 2004. <br />Projected Subsidence Monitoring - 2003 <br /> <br />-4- <br />