SPS 307.41(2)
(2) Affected buildings. Affected dwellings or other structures shall be determined based on the scaled-distance equation, W = (D/Ds)
2. Using a scaled-distance factor Ds of 55, affected dwellings or other structures shall be those located within the distance D of the controlled blasting site area for the weight per delay W of explosives to be used.
SPS 307.41 Note
Note: An example calculation to determine D is as follows: For 4 pounds of explosives, D = Ds(W)1/2 = 55 (4)1/2 = 110 feet.
SPS 307.41 History
History: CR 06-120: cr.
Register February 2008 No. 626, eff. 3-1-08;
CR 17-034: renum. (1) to (1) (a) and am., cr. (1) (b), (c), Register March 2018 No. 747 eff. 4-1-18.
SPS 307.42
SPS 307.42 Blasting schedules. All surface blasting shall be conducted between sunrise and sunset, unless one of the following conditions applies:
SPS 307.42(1)
(1) More restrictive time periods are specified by the department.
SPS 307.42(2)
(2) The blasting is approved by the department based on a showing by the operator that the public will not be adversely affected by noise and other impacts.
SPS 307.42 History
History: CR 06-120: cr.
Register February 2008 No. 626, eff. 3-1-08.
SPS 307.43
SPS 307.43 Instrumentation. All seismographs used to determine compliance with this subchapter shall meet the following minimum specifications:
SPS 307.43(1)
(1) Seismic frequency range: 2 to 200 Hz, plus or minus 3 Hz.
SPS 307.43(2)
(2) Acoustic frequency range: 2 to 200 dB, plus or minus 1 dB.
SPS 307.43(5)
(5) Transducers: Three mutually perpendicular axes.
SPS 307.43(7)
(7) Calibration: Be laboratory calibrated as often as necessary, but at least once every 12 months according to manufacturer's recommendations.
SPS 307.43 History
History: CR 06-120: cr.
Register February 2008 No. 626, eff. 3-1-08;
CR 17-034: am. (1), (2) Register March 2018 No. 747 eff. 4-1-18.
SPS 307.44(1)
(1)
General requirements. Blasting shall be conducted so as to prevent injury and unreasonable annoyance to persons and damage to public or private property outside the controlled blasting site area.
SPS 307.44(2)
(2) Flyrock. Flyrock traveling in the air or along the ground shall meet all of the following conditions:
SPS 307.44(2)(b)
(b) Not be cast more than one-half the distance to the nearest inhabited building within or outside of the controlled blasting site area.
SPS 307.44(3)(a)(a) An airblast may not exceed 133 peak dB at the location of any dwelling, public building or place of employment outside the controlled blasting site area.
SPS 307.44(3)(b)
(b) The blaster shall conduct monitoring of every blast to determine compliance with the airblast limit. The measuring system used shall have a lower-end flat frequency response of not more than 2 Hz and an upper-end flat frequency response of at least 200 Hz.
SPS 307.44(4)(a)1.1. The maximum ground vibration at the location of any dwelling, public building or place of employment outside the controlled blasting site area shall be established in accordance with the blasting-level chart of
par. (b).
SPS 307.44(4)(a)2.
2. All structures in the vicinity of the controlled blasting site area, not listed in
subd. 1., such as water towers, pipelines and other utilities, tunnels, dams, impoundments and underground mines, shall be protected from damage by establishment by the blaster of a maximum allowable limit on the ground vibration. The blaster shall establish the limit after consulting with the owner of the structure.
SPS 307.44(4)(b)
(b) The blaster shall use the ground vibration limits specified in Figure 7.44 to determine the maximum allowable ground vibration. Ground vibration shall be measured as the particle velocity. Particle velocity shall be recorded in 3 mutually perpendicular directions.
SPS 307.44(4)(c)
(c) The blaster shall make and keep a seismograph record including both particle velocity and vibration frequency levels for each blast. The method of analysis shall be subject to discretionary review by the department.
SPS 307.44 Note
Note: Local municipalities may have more restrictive regulations than the department.
SPS 307.44(5)
(5) Reporting adverse effects. The blaster in charge shall report to the department any flyrock, airblast, or ground vibration that does not meet the requirements under this section.
SPS 307.44 Note
Note: Adverse effects may be reported to the department by telephone at (608) 267-9378 or by email to
DSPSMineSafety@wisconsin.gov.
Figure 7.44 - Blasting Level Chart
SPS 307.44 History
History: CR 06-120: cr.
Register February 2008 No. 626, eff. 3-1-08;
CR 17-034: r. (4) (d), cr. (5) Register March 2018 No. 747 eff. 4-1-18.
SPS 307.50
SPS 307.50 Licensing of fireworks manufacturers. SPS 307.50(1)(1)
License required. No person may manufacture fireworks unless that person holds a license issued by the department in accordance with
ch. SPS 305.
SPS 307.50(2)
(2) Posting. A fireworks manufacturer license shall be posted at each plant where fireworks are to be manufactured.
SPS 307.50 History
History: CR 06-120: cr.
Register February 2008 No. 626, eff. 3-1-08; correction in (1) made under s.
13.92 (4) (b) 7., Stats.,
Register December 2011 No. 672.
SPS 307.51(1)
(1)
General. The authorized inspectors of the department may enter and inspect at reasonable times the premises on which each person licensed under this chapter manufactures fireworks.
SPS 307.51(2)
(2) Initial inspections. Upon receipt of an application for a fireworks manufacturing license, the department or the department's designated deputy shall inspect the premises for which the application is made.
SPS 307.51(3)
(3) Periodic inspections. The department or the department's designated deputy shall, at least once every 3 years, conduct a safety inspection of a permanent explosive materials storage facility located on the premises on which each person licensed under this chapter manufactures fireworks. Fees for an inspection under this subsection shall be assessed as specified in
s. SPS 302.18 (2).
SPS 307.51(4)
(4) Federal inspection acceptance. Where an inspection of a fireworks manufacturing plant has been conducted by the federal bureau of alcohol, tobacco, firearms and explosives, the department may accept a federal inspection report in lieu of the department inspection.
