SPS 307.30
SPS 307.30 General. The use of explosive materials for blasting shall be executed in accordance with NFPA 495 chapter 10.
SPS 307.30 History
History: CR 06-120: cr.
Register February 2008 No. 626, eff. 3-1-08.
SPS 307.31
SPS 307.31 Changes, additions or omissions to NFPA 495. SPS 307.31(1)(1) Changes, additions or omissions to NFPA 495 chapter 10 are specified in this subchapter and are rules of the department and are not requirements of the NFPA 495 standard.
SPS 307.31(2)
(2) These are department rules in addition to the requirements in NFP A 495 section 10.1.4:
SPS 307.31(2)(a)
(a)
Blaster requirements. When blasting operations are conducted in a municipality, the shots shall be designed and initiated by a properly licensed Class 5, 6, or 7 blaster.
SPS 307.31 Note
Note: See ch.
SPS 305 for blaster license requirements and classifications.
SPS 307.31(2)(b)1.1. Any person conducting blasting operations in a municipality at a location other than a mine, pit, or quarry shall notify the department, local fire department, and local law enforcement agency of the first date on which blasting is scheduled and the location of the blasting operation. Notification shall be made on forms provided by the department and occur at least 10 days prior to the first date on which blasting is scheduled. Unless notification of subsequent blasting is requested by the local fire department or local law enforcement agency or required by municipal ordinance, only one initial notice is required under this subdivision.
SPS 307.31(2)(b)2.
2. Each calendar year before annual blasting begins at a mine, pit, or quarry located in a municipality, the person conducting blasting operations shall notify the department that blasting is about to begin. Notification shall be made on forms provided by the department and occur at least 10 days prior to the date on which blasting is scheduled to begin. Unless notification of annual or subsequent blasting is requested by the local fire department or local law enforcement agency or required by municipal ordinance, only one initial notice to the department each calendar year is required under this subdivision.
SPS 307.31 Note
Note: A notice of blasting form is available from the department's Division of Industry Services at P.O. Box 7302, Madison, WI 53707-7302; by email at
dsps@wisconsin.gov; by telephone at (608) 266-2112, (877) 617-1565, or 411 (Telecommunications Relay); or at the division's website at
http://dsps.wi.gov/programs/industry-services.
SPS 307.31(3)
(3) These are department rules in addition to the requirements in NFPA 495 section 10.2:
SPS 307.31(3)(a)
(a) Explosive materials used in underground blasting shall be fume class 1; however, fume class 2 and fume class 3 may be used if adequate ventilation has been provided as determined by the blaster in charge.
SPS 307.31 Note
Note: Fume class 1 explosives produce less than 0.16 cubic feet of poisonous gases per 1-1/4 x 8" cartridge when detonated in the Bichel Gauge.
SPS 307.31(3)(b)
(b) All blast holes in open work shall be stemmed to the collar or to a point which will confine the charge.
SPS 307.31(4)
(4) These are department rules in addition to the requirements in NFPA 495 chapter 10:
SPS 307.31(4)(a)
(a)
Required log. A blasting log shall be required for each blast fired.
SPS 307.31(4)(b)
(b)
Filing and availability. All blasting logs shall be kept on file by the blaster for a minimum period of 3 years, and shall be made available to the department upon request.
SPS 307.31(4)(c)
(c)
Information. Each blasting log shall contain at least all of the following information:
SPS 307.31(4)(c)1.
1. Name, signature and license number of the blaster in charge of the blast.
SPS 307.31(4)(c)2.
2. Specific blast location, including GPS location or latitude and longitude coordinates, address, and bench and station number if applicable.
SPS 307.31(4)(c)18.
18. Seismographic and airblast records, which shall include all of the following:
SPS 307.31 History
History: CR 06-120: cr.
Register February 2008 No. 626, eff. 3-1-08;
CR 17-034: am. (2) (intro.), (a), renum. (2) (b) to (2) (b) 1. and am., cr. (2) (b) 2., am. (4) (c) 2., Register March 2018 No. 747 eff. 4-1-18.
SPS 307.40
SPS 307.40 Regulation of blasting resultants. Pursuant to s.
101.15 (2) (e), Stats., the purpose of this subchapter is to provide for the establishment of uniform limits on permissible levels of blasting resultants to reasonably assure that blasting resultants do not cause injury, damage or unreasonable annoyance to persons or property outside any controlled blasting site area.
SPS 307.40 History
History: CR 06-120: cr.
Register February 2008 No. 626, eff. 3-1-08.
SPS 307.41(1)(a)(a) At least 24 hours prior to initial blasting at a blast site, the blaster in charge shall make a reasonable effort to notify in writing or verbally all residents or owners of affected dwellings or other structures, as determined under sub.
(2), that a blasting operation is to begin. The blaster in charge shall offer to perform a preblasting survey for the residents or owners. If a resident or owner requests a copy of the preblasting survey, the blaster in charge shall provide a copy for not more than the actual cost of the copy within 48 hours of the request. Except as provided under
pars. (b) and
(c), only one initial preblasting survey is required for a blast site.
SPS 307.41(1)(b)
(b) The blaster in charge shall offer to perform a preblasting survey for the residents or owners of any dwelling or other structure that becomes an affected dwelling or other structure, as determined under
sub. (2), after the initial preblasting survey under
par. (a) is performed.
SPS 307.41(1)(c)
(c) The blaster in charge shall offer to perform a preblasting survey for the residents or owners of an affected dwelling or other structure, as determined under
sub. (2), constructed or renovated after the initial preblasting survey under
par. (a) is performed.
SPS 307.41 Note
Note: A preblasting survey provides a baseline record of the pre-existing condition of a structure against which the effects of blasting can be assessed, and it should include the interior and exterior of the buildings.
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
