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<br /> <br />their structures. This service was provided by a third party <br />consultant and the cost was paid by WFC. Notices were <br />published in the San Miguel Basin Forum, Montrose Daily Press, <br />Grand Junction Daily Sentinel, and the consultant tried to <br />personally contact each resident. If he failed to make contact, <br />a card was left at the residence to notify WFC for an <br />appointment schedule. No request for a survey was received <br />from the resident or owner of 535 Grape Street. <br />2) WFC's blasting operation actually started farther west of 535 <br />Grape Street than the permit line, thus the distance was <br />actually much greater than one-half mile. Seismic energy <br />diminishes inversely to the square of the distance from the <br />blast to the structure. The closest detonation, ever, firom New <br />Horizon Mine to 535 Grape Street was a distance of 3216 feet. <br />Item 4 below has the results of this detonation. <br />3) Each blast is designed for minimal vibration. The ground <br />vibration is limited to less than one (1) inch per second at <br />the permit fence facing the town. One inch per second is the <br />legal allowable limit set for structures 301 ft - 5000 ft by <br />the Department of the Interior, Office of Surface Mining. <br />4) WFC has set out four seismograph monitoring recorders per blast <br />at various locations. These machi.^es are factory calibrated <br />annually. When blasting operations started at New Horizon Mine <br />and for several months afterwards, there was at least one <br />seismograph machine set up between the blast and the residence <br />at 535 Grape Street. The monitoring locations were along <br />Lincoln Street and at 27745 West 5TH Road. The seismograph <br />locations were selected to be near the closest home at the time <br />of the blast. In the case of Item 2 above, the ground vibration <br />