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..,j /... Mrs. Ann Tatum may be discontinued with Division approval." Given the results of the April 21, 1995 survey, the recorded change in elevation would be considered within the allowed survey error and that no change in elevation has occurred. The State and OSM are fully awaze of the results of this survey. In response to your July 13, 1995 letter: - Amore detailed resume for Michael Rosenthal was sent to your office on July 20, 1995. - In the last paragraph, you refer to a discussion between you and Michael Rosenthal. In that discussion, he recalls telling you that Jim Pendleton (DMG) told him that subsidence monitoring of your home was not necessary because: 1) there would be no mining under your home, 2) that mining in the first north panel would be stopped at the present extent, and 3) the mining that had occurred was done by limited extraction techniques. These are the same reasons Mr. Pendleton gave during a meeting at your home on February 1, 1995, and he recently confirmed his reasons with Mr. Rosenthal. The Colorado DMG could tell you who advised the mine that monitoring of your home was not required; OSM had no involvement in the matter. In your letter of July 18, 1995 you asked OSM to perform an analysis of the Woodward- Clyde report in conjunction with the SDPS (Surface Deformation Prediction System) progiam: The. April 12, 1995 progress report submitted to you by Carl Gerity indicates that he obtained a copy of the program from the vender (page 4 of his report). This analysis would be more appropriately done by your consultant. The Woodward-Clyde report is unfinished due to funding cutbacks at the Department of Energy; it was started in order to characterize subsidence over longwall (full extraction) mining panels. The investigations conducted by OSM at your residence were for subsidence potential resulting from limited extraction mining techniques. 2 Many of the questions that you have posed are more appropriately answered by the Colorado DMG. The State is the responsible regulatory authority and as such has the primary jurisdiction over matters relating to surface and underground coal mining. With regazd to your complain[ of subsidence damage to your home, OSM has assisted the State by providing technical assistance in the investigation, the reports of which have been provided to you and the State. Any future correspondence concerning the alleged subsidence damage to your home and related technical information should be addressed to the Colorado DMG at: Ms. Susan McCannon Division of Minerals and Geology State of Colorado 1313 Sherman Street, Rm. 215 Denver, CO 80203