Common use of Monitoring Procedure Clause in Contracts

Monitoring Procedure. (a) The sound level meter was set on a tripod at a height of 1.2 m above the ground for free-field measurements at NMS2. A correction of +3 dB(A) shall be made to the free field measurements. (b) All measurement at NMS3B were free field measurements in the reporting month at NMS3B. A correction of +3 dB(A) shall be made to the free field measurements. (c) The battery condition was checked to ensure the correct functioning of the meter. (d) Parameters such as frequency weighting, the time weighting and the measurement time were set as follows:- (i) frequency weighting: A (ii) time weighting: Fast (iii) time measurement: Leq(30-minutes) during non-restricted hours i.e. 07:00 – 1900 on normal weekdays. (e) Prior to and after each noise measurement, the meter was calibrated using the acoustic calibrator for 94dB(A) at 1000 Hz. If the difference in the calibration level before and after measurement was more than 1 dB(A), the measurement would be considered invalid and repeat of noise measurement would be required after re-calibration or repair of the equipment. (f) During the monitoring period, the Leq, L10 and L90 were recorded. In addition, site conditions and noise sources were recorded on a standard record sheet. (g) Noise measurement was paused during periods of high intrusive noise (e.g. dog barking, helicopter noise) if possible. Observations were recorded when intrusive noise was unavoidable. (h) Noise monitoring was cancelled in the presence of fog, rain, wind with a steady speed exceeding 5m/s, or wind with gusts exceeding 10m/s. The wind speed shall be checked with a portable wind speed meter capable of measuring the wind speed in m/s.

Monitoring Procedure. (a) The sound level meter was set on a tripod at a height of 1.2 m above the ground for free-field measurements at NMS2. A correction of +3 dB(A) shall be made to the free field measurements. (b) All measurement at NMS3B NMS3A were free field measurements in the reporting month at NMS3B. NMS3A. A correction of +3 dB(A) shall be made to the free field measurements. (c) The battery condition was checked to ensure the correct functioning of the meter. (d) Parameters such as frequency weighting, the time weighting and the measurement time were set as follows:- (i) frequency weighting: A (ii) time weighting: Fast (iii) time measurement: Leq(30-minutes) during non-restricted hours i.e. 07:00 – 1900 on normal weekdays. (e) Prior to and after each noise measurement, the meter was calibrated using the acoustic calibrator for 94dB(A) at 1000 Hz. If the difference in the calibration level before and after measurement was more than 1 dB(A), the measurement would be considered invalid and repeat of noise measurement would be required after re-calibration or repair of the equipment. (f) During the monitoring period, the Leq, L10 and L90 were recorded. In addition, site conditions and noise sources were recorded on a standard record sheet. (g) Noise measurement was paused during periods of high intrusive noise (e.g. dog barking, helicopter noise) if possible. Observations were recorded when intrusive noise was unavoidable. (h) Noise monitoring was cancelled in the presence of fog, rain, wind with a steady speed exceeding 5m/s, or wind with gusts exceeding 10m/s. The wind speed shall be checked with a portable wind speed meter capable of measuring the wind speed in m/s.

Monitoring Procedure. (a) The sound level meter was set on a tripod at a height of 1.2 m above the ground for free-field measurements at NMS2. A correction of +3 dB(A) shall be made to the free field measurements. (b) All measurement at NMS3B were free field measurements in the reporting month at NMS3B. A correction of +3 dB(A) shall be made to the free field measurements. (c) The battery condition was checked to ensure the correct functioning of the meter. (d) Parameters such as frequency weighting, the time weighting and the measurement time were set as follows:- (i) frequency weighting: A (ii) time weighting: Fast (iii) time measurement: Leq(30-minutes) during non-restricted hours i.e. 07:00 – 1900 on normal weekdays. (e) Prior to and after each noise measurement, the meter was calibrated using the acoustic calibrator for 94dB(A) at 1000 Hz. If the difference in the calibration level before and after measurement was more than 1 dB(A), the measurement would be considered invalid and repeat of noise measurement would be required after re-calibration or repair of the equipment. (f) During the monitoring period, the Leq▇▇▇, L10 ▇▇▇ and L90 were recorded. In addition, site conditions and noise sources were recorded on a standard record sheet. (g) Noise measurement was paused during periods of high intrusive noise (e.g. dog barking, helicopter noise) if possible. Observations were recorded when intrusive noise was unavoidable. (h) Noise monitoring was cancelled in the presence of fog, rain, wind with a steady speed exceeding 5m/s, or wind with gusts exceeding 10m/s. The wind speed shall be checked with a portable wind speed meter capable of measuring the wind speed in m/s.