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Quarry monitors report 18 blasts in Q1; all readings stayed below PDD limits, consultants say
Summary
Stantec presented first-quarter monitoring showing 18 blasts, one formal complaint and no exceedances of the Plan Development District vibration or decibel limits; committee voted to place the report on file and discussed relocating seismographs to better match blasting activity.
Franklin City’s Quarry Monitoring Committee on April 22 reviewed first-quarter monitoring from Stantec Consulting Services showing 18 controlled blasts, one formal complaint and no exceedances of the Plan Development District’s (PDD) vibration or decibel limits.
Stantec consultant Kristin (last name not specified) told the committee that during January–March the firm completed two observation events and that “there were a total of 18 blasting events and only 22 percent of them were confirmed by our monitors,” a gap the consultant said was partly due to monitor locations. She said the PDD requires that 85% of blasts for a calendar year fall below permitted levels,…
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