Agenda - 10-06-1981 - Laserfiche WebLink

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768 (c) VIBRATION LEVELS- 674 Pe; As is the case with sound levels, the distance from our operation to any boundary is sufficient "insulation" from vibrations that exceed ordinance limitations at that point. Our expert has also advised us that vibrations from our steady state operation will not be perceptible at property boundaries. In order to assure that vibrations from blasting do not exceed ordinance levels, a variety of blasting techniques are customarily utilized. Depending on the location of the shot within the pit and depend- ing on weather conditions, we can vary the number of holes shot, the number of holes per delay, and the amount of powder per hole. Frequently we solicit the help and advice of other out- side explosive experts to guide us in loading and shooting in the safest man:zer possible, and in a manner likely to restrict the noise and vibrations ' to the lowest levels possible. All state and federal blasting guidelines are followed. 8. Other Miscellaneous Ordinance Requirements (7.8.1.2 C-H). (a) Surfacing of Permanent Roads. No roads other than those shown to be paved are present on the operation site. These roads lead to a yard area. (b) No extraction will take place within 300 feet of a building or public lands. (c) No spoils piles or stockpiles shall be created to a height greater than 35 feet. (d) Disturbed land will be kept to a minimum. Because of the extremely high cost of stripping overburden and because of the high cost of reclamation, it is in our best interest as well as in the best interest of the county to restrict the amount of land disturbed to the minimum necessary for operations. (e) The Company has already posted a $25,000 reclamation bond, as is required by the North Carolina Mining Act The current plans are for the Mining Act to increase the amount of the bond to $2,000 per acre of land covered by the permit.