This study analyzed the measurement results of previous years with different weighting methods and different frequency range to evaluate the influence on the low-frequency noise measurement results. It showed that the results of unweighted data is closer to the C-weighted data. The increment of 20Hz-250Hz summation is not distinct, so the low frequency range may still be maintained at 20Hz-200Hz.
A total of 660 noise inspection records of EPB were reviewed. The audit results showed that the unqualified rate have gradually decreased in each quarter. It means that the EPB has paid more and more attention to the noise inspection work.
Periodic and intermittent noise measurement had completed 10 points in total .Considering the feasibility of practical implementation, it is recommended to use the maximum value of 10 times, which is more in line with the inspection operation and on-site conditions.
In response to the vibration report cases provided by the EPA, a total of 7 on-site tracking or guidance operations were completed. Each case includes conducting industry interviews and on-site measurements, and providing noise improvement suggestions.
In the project, 20 environmental vibration measurements had been completed. Develop the draft provisions of environmental vibration management guidelines, and hold expert consultation meetings. Draft environmental vibration management guidelines, and suggestions vibration projects for environmental impact assessment.