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<br />February 19, 1999 Pago 3 <br />NOV C-93-006 <br />7. Subsidence profiles for the subsidence monitoring network, <br />which shows subsidence to date. <br />s. The rneults of n visual survey if one was completed. If <br />not, pleesa note in your report that one was not completed <br />and the reasons why this was not done. A visual survey <br />should be performed at least yearly. <br />9. Include hydrologic information. For example, provide <br />water level information for the groundwater wells that <br />exist oust the mino workings. Analyze tho groundwater <br />data in respect to subsidence. include any other <br />information that would correlate any hydrologic impacts <br />with subsidence. <br />10. Pleass provide an explanation na to why Pnnels 2, 3, SS, <br />36, 82, and 93 were react during Survey 113. <br />11. Include any other information that would assist the <br />Division in the review of the subsidence reports. <br />The information required by the three abatement steps should be <br />submitted as a technical revision on or before April 19, 1993. <br />Please call if you have any questions. <br />Sincerely, <br />Christine E. <br />Reclamation <br />Encloaurea <br />Certified Mail No. P eB0 774 044 <br />007.NOV <br />