Yes. The Johnson County Building Codes department continuously monitors the blasting that is being conducted in unincorporated Johnson County. As part of issuing a blasting permit it is understood by the Blasting Contractor that their seismograph readings must be submitted monthly for quarries. At any time the Building Codes department may require that the contractor submit their seismograph readings.
These records must be maintained for 3 years and available within 24 hours of the request.