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_ •, f <br />• • <br />• <br />Mined Land keclamation August Ib, 1985 Page 3 <br />• <br />The shift in each point is slight and within the expected <br />tolerances. Tolerances must account far the equipment used, <br />accuracy of the electronic distance measuring equipment, <br />wind, temperature and atmospheric pressure. <br />Subsequent subsidence monitoring will be based on the new ~- <br />inch monuments, and will be compared to the data in the table <br />below. On our next report we will remind you that the <br />monuments are new, and the coordinates for comparison were <br />furnished with this report. <br />Coordinates based vn new ~+-inch monuments: <br />Station X Y Z <br />D-11 405,i~64.5b8~~ 1,440,552.47b3 6184.6304 <br />D-12 495,417.1664 1,441,624.~~050 6192.3540 <br />U-7 40:,692.713 1,441,66~~.491 6547.572 <br />U-T2 400,582.346 1,4~~9,72.~.94b 7697.568 <br />U-i 400,463.005 1,440,850.179 7830.163 <br />U-4 4f~(~,427.998 1,440,494.691 7752.864 <br />U-5 ~99,019.258 1,442,44b.645 7795.453 <br />u-9 401,04b.180 1,442,611.965 7327.464 <br />U-A1 400,502,bb~~ 1,441,153.717 7819..384 <br />• U-2 <br />U-3 4~ ~O , bZ~3. 050 <br />399 <br />660 <br />912 1 , 441 , 796. I56 <br />1 <br />441 <br />734 <br />536 7548. ~ X60 <br />7748 <br />010 <br /> , <br />. , <br />. <br />, . <br />We recommend the subsidence survey be accepted showing nv <br />mevemen± ^f the monuments from July 1984 to August, 1985. <br />~ ~~, , ~ <br />E. Lekoy P1acL: <br />cc: Fear Coal Cv. <br />ACZ, irc. <br /> <br />