Section 69-05.2-17-07 - Performance standards - Use of explosives - Records of blasting operations A log of each blast, including any seismograph reports, must be retained at the minesite under subsection 13 of North Dakota Century Code section 38-14.1-24. The log must contain:
2. Location, date, and time of blast. 3. Name, signature, and certificate number of blaster-in-charge. 4. Direction and distance, in feet [meters], to nearest dwelling, school, church, commercial or institutional building, or other protected structure: a. Not located in the permit area; or b. Not owned or leased by the person who conducts the surface mining activities. 5. Weather conditions, including temperature, wind direction, and approximate velocity. 6. Type of material blasted. 7. Diameter and depth of holes. 8. Types of explosives used. 9. Total weight of explosives used per hole. 10. Maximum weight of explosives detonated within any eight-millisecond period. 11. Maximum number of holes detonated within any eight-millisecond period. 13. Type and length of stemming. 14. Mats or other protections used. 15. Sketch of the blast pattern, including number of holes, burden, spacing, decks, and delay pattern. 16. Seismograph and airblast records, where required, including: a. The calibration signal of the gain setting. b. Seismographic reading, including exact location of seismograph, its distance from the blast, the date and time of the blast, and the vibration levels recorded. c. Name of the person taking the seismograph reading. d. Airblast levels recorded. e. Name of the person and firm analyzing the seismograph report. 17. Reasons and conditions for each unscheduled blast. N.D. Admin Code 69-05.2-17-07
Effective August 1, 1980; amended effective May 1, 1990; March 1, 2004.General Authority: NDCC 38-14.1-03
Law Implemented: NDCC 38-14.1-24