« Distance and direction of recording station from the area of detonation
= Date and exact time of reading
" Type of ground at recording station
= Peak particle velocity for all components as well as resultant for all
frequencies of vibrations
" Duration of motion with a velocity in excess of one thousandth of an inch
per second. A copy of the photographic record of seismograph readings
Peak air blast level.
3.04 BLASTING RECORDS:
The Contractor shall prepare and submit to the Engineer daily blast reports, including
logs of each blast. Reports shall be submitted to the Engineer no later than the start of
the next day's work. However, during each day of blasting, the Contractor shall review
and shall provide access for the Engineer to review the data from that day's blasting.
Reports after each blast shall include at least the following information for each blast:
Date, time, and location of
blast
Permit number and expiration
date
Amount and type of explosives used by weight and number of
cartridges
Total number of delays used and number of holes used for each
delay
On a diagram of the blast pattern, indicate total number and depth of holes,
maximum charge per delay, maximum charge per hole, and corresponding delay
number
An evaluation of the blast indicating areas of significant over-break, unusual
results, and any recommended adjustments for the next blast.
3.05 POST BLASTING INSPECTIONS:
The Contractor shall examine any properties, structures, and conditions where
complaints of damage have been received or damage claims have been filed. Advance
notice shall be given to all interested parties so that the parties may be present during
the final examination. Records of the final examination shall be signed and distributed
to the owner of the property, the head of the local fire department, and the Engineer.
END OF
2020 Sewer Replacement Project Rock Structure Excavation and Disposal
Nashua, NH 02324-4
