25 Pa. Code § 77.565

Current through Register Vol. 54, No. 36, September 7, 2024

Section 77.565 - Records of blasting operations

A record of each blast shall be retained for at least 3 years and shall be available for inspection by the Department. Seismographic reports, if applicable, shall be made a part of that record. The record shall include the following data:

(1) The name of the operator conducting the blast and the permit number.

(2) The location, date and time of the blast.

(3) The name, signature and license number of the blaster-in-charge.

(4) The direction and distance, in feet, to the nearest dwelling, school, church or commercial or institutional building and the property name meeting one of the following conditions:

(i) It is not located in the permit area.

(ii) It is not owned or leased by the person who conducts the surface mining activities.

(5) Weather conditions, including temperatures, wind direction and approximate velocity.

(6) The type of material blasted.

(7) The number of holes, burden and spacing.

(8) The diameter and depth of holes.

(9) The types of explosives used.

(10) The total weight, in pounds, of explosives used.

(11) The maximum weight, in pounds, of explosives detonated per 8 millisecond or less delay intervals.

(12) The maximum number of holes detonated per 8 millisecond or less delay intervals.

(13) The initiation system.

(14) The type and length of stemming.

(15) Mats or other protections used.

(16) The total quantity and type of delay detonator and delay periods used.

(17) The sketch showing the number of holes, burden, spacing, and pattern dimensions of the delay pattern and point of initiation.

(18) The number of persons in the blasting crew.

(19) The seismograph and airblast records, when required, including the type of instrument, sensitivity and calibration signal of the gain setting and certification of annual calibration and the following:

(i) The seismograph or airblast level reading, or both, including exact location of the seismograph, its distance from the blast and the name of the property.

(ii) The name of the person taking the seismograph reading.

(iii) The name of person and firm analyzing the seismograph record.

(20) The reasons and conditions for an unscheduled blast.

(21) The total number of blasting caps used.

(22) The scaled distance.

(23) The location of the seismograph, when required.

(24) The type of circuit, if electric detonation is used.

25 Pa. Code § 77.565

The provisions of this §77.565 adopted March 16, 1990, effective 3/17/1990, 20 Pa.B. 1643.

Amended by Pennsylvania Bulletin, Vol 53, No. 33. August 19, 2023, effective 8/19/2023

This section cited in 25 Pa. Code § 77.108 (relating to permit for small noncoal operations); 25 Pa. Code § 77.453 (relating to blasting plan); and 25 Pa. Code § 77.463 (relating to surface mining near underground mining).