Blasting
notices
There is no blasting notice at the moment.
Blasting may be cancelled due to unfavourable winds or community activities, such as religious ceremonies.
We are authorized to perform two blasts per day, 365 days a year, between 11 a.m. and noon, and between 3 p.m. and 4 p.m. The permitted blast length is 15 seconds. Standards are 12.7 mm/second for vibrations and 128 dB for noise.
| Date | Reference | Length | Seismograph | Wind Direction | Vibration | Decibels |
|---|---|---|---|---|---|---|
| 2021-04-11 15:00 (Canceled) | 20210411 PM | 14904 MS | ||||
| 2021-04-10 11:00 (Canceled) | 20210410 AM | 14930 MS | ||||
| 2021-04-10 15:00 | 20210410 PM | 14904 MS | ||||
| Jacques-Cartier | Sud-Ouest | SSD | SSD | |||
| Musée | Sud-Ouest | SSD | SSD | |||
| Renaud | Sud-Ouest | SSD | SSD | |||
| Des Saules | Sud-Ouest | SSD | SSD | |||
| Abitibi | Sud-Ouest | SSD | SSD | |||
| Royale | Sud-Ouest | SSD | SSD | |||
| Lasalle | Sud-Ouest | SSD | SSD | |||
| 2021-04-09 15:00 (Canceled) | 20210409 PM | 14904 MS | ||||
| 2021-04-08 15:00 (Canceled) | 20210408 PM | 14180 MS | ||||
| 2021-04-05 15:00 | 20210405 PM | 4452 MS | ||||
| Jacques-Cartier | NNE | 1.53 mm/s | 108.8 dBL | |||
| Musée | NNE | 2.44 mm/s | 115.7 dBL | |||
| Renaud | NNE | SSD | SSD | |||
| Des Saules | NNE | SSD | SSD | |||
| Abitibi | NNE | 1.35 mm/s | 109.9 dBL | |||
| Royale | NNE | 1.66 mm/s | 115.6 dBL | |||
| Lasalle | NNE | SSD | SSD | |||
| 2021-04-04 15:00 | 20210404 PM | 11756 MS | ||||
| Jacques-Cartier | NNE | 3.21 mm/s | 101.9 dBL | |||
| Musée | NNE | 3.14 mm/s | 104.9 dBL | |||
| Renaud | NNE | 1.40 mm/s | 101.9 dBL | |||
| Des Saules | NNE | SSD | SSD | |||
| Abitibi | NNE | SSD | SSD | |||
| Royale | NNE | 2.08 mm/s | 107 dBL | |||
| Lasalle | NNE | 2.18 mm/s | 98.8 dBL | |||
| 2021-04-03 15:00 | 20210403 PM | 13498 MS | ||||
| Jacques-Cartier | SO | 2.10 mm/s | 105.5 dBL | |||
| Musée | SO | 1.23 mm/s | 102.8 dBL | |||
| Renaud | SO | SSD | SSD | |||
| Des Saules | SO | SSD | SSD | |||
| Abitibi | SO | SSD | SSD | |||
| Royale | SO | 2.41 mm/s | 106.5 dBL | |||
| Lasalle | SO | SSD | SSD | |||
| 2021-04-02 11:00 | 20210402 AM | 4488 MS | ||||
| Jacques-Cartier | N | 1.45 mm/s | 101.9 dBL | |||
| Musée | N | 3.5 mm/s | 101.9 dBL | |||
| Renaud | N | SSD | SSD | |||
| Des Saules | N | SSD | SSD | |||
| Abitibi | N | SSD | SSD | |||
| Royale | N | 1.51 mm/s | 106.0 dBL | |||
| Lasalle | N | 1.27 mm/s | 95.9 dBL | |||
| 2021-04-01 15:00 | 20210401 PM | 15000 MS | ||||
| Jacques-Cartier | Nord | 2.71 mm/s | 115.6 dBL | |||
| Musée | Nord | 3.07 mm/s | 115.0 dBL | |||
| Renaud | Nord | SSD | SSD | |||
| Des Saules | Nord | SSD | SSD | |||
| Abitibi | Nord | 1.56 mm/s | 110.2 dBL | |||
| Royale | Nord | 2.08 mm/s | 118.1 dBL | |||
| Lasalle | Nord | 1.33 mm/s | 94.0 dBL |
Date : Blast date and time
Reference : Blast identification
Length : Blast length or the period between the detonation of the first shot and the detonation of the last shot in a sequence.
Seismograph : Measuring instrument equipped with a geophone and a microphone. The geophone detects ground motion and vibrations passing through the earth’s crust. The microphone detects air pressure variations..
Wind Direction : Indicates wind direction
Vibration : Indicates ground motion.
Decibels (dB) : Indicates air pressure variations.
Below Detection Limit (BDL) : Indicates seismograph has not been triggered. Seismograph is not triggered when ground vibrations are below 1 mm/s.
Not available (NA) : Indicates value is unavailable.
ms : Length is measured in milliseconds (1,000 ms = 1 second).
