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., ~ ~ o <br />~.: - e ~~__~__. <br />w <br />July 11, 2000 <br />Scott Lewis <br />Cripple Creek & Victor Mining Company (Anglogold) <br />PO Box 191 <br />victor. co aosso <br />Dear Scott: <br />rv~~go - 249- <br />RECEIVED <br />dUL 12 P000 <br />Dhnsion of Minerals 8 Geology <br />During the Informal Conference for the CC&V mine, with the Division of Minerals 8 <br />Geology on June 29, 2000, a concerned property owner from Victor, asked if monitors <br />could be placed on second floors of buildings. This person understood the Division to <br />say that they could. <br />When I asked the mine to place the monitor in our building on the second floor, you <br />responded: <br />"The a-mail notes that Division of Minerals and Geology ("DMG") representatives at the June 29, <br />2000 informal conference agreed to installation of blasting monitors other than on the ground and <br />you are requesting installation of such a monitor on the second floor. This is not our <br />understanding of DMG's statements. DMG indicated second floor monitoring would require <br />agreement between CC&V and the requestor or could be included in a Mined Land Reclamation <br />Board ("NLRB") Order. We have previously consulted with our blasting experts -Matheson <br />Mining Consultants, Inc. ("MMU) - on this matter and MMC has consistently' advised us that it is <br />improper to place a blasting monitor anywhere but on the ground since all testing protocols <br />developed by the federal government and all testing data that can be used for comparison <br />purposes are based on monitors installed on the ground. MMC has referred us to the "Blasting <br />Guidance Manual" published by the Office of Surface Mining Reclamation and Enforcement <br />("OSMRE") in March 1987, which states: "The placement of the transducer head should be <br />outside any building or structure Of concern, since the vibration limits arefor effects at the point <br />of entry to a structure. Locations which are also influenced by an incidental or background <br />vibration -heavy rotating machinery, compressors, etc. -should be avoided II is quite common <br />for a householder to request that the instrument be placed inside a house, or on a window sill. In <br />most cases these requests are made because this location is where the vibration was most strongly <br />experienced This request should always be resisted, explaining that any location other than <br />outside the structure will not measure incoming ground motion, but only structure response, and <br />the structure response was carefully considered when the OSMRE drafted the ground motion <br />regulations " As such, we must decline your request to place a monitor on the second floor of <br />your building." <br />The same property owner recorded the conference and this is what was actually said <br />"Yes, it can be done. It can be worked out with the operator, or through some process <br />of the Division, or the NLRB could require it." <br />lA ~ ~ ~~ <br />I~ V-- <br />