Common use of Monitoring Procedures Clause in Contracts

Monitoring Procedures. 2.4.1 During the noise monitoring, the following procedures were followed: • All measurements were made in facade type. The microphone of the sound level meter was positioned 1m exterior of the sensitive receivers and lowered sufficiently so that the external wall of the building acts as a reflecting surface. • Parameters such as frequency weighting, the time weighting and the duration of measurement were set as follows: - Frequency weighting : A AECOM Asia Co. Ltd. 3 November 2021 MTR Corporation Limited Consultancy Agreement No. C11033 SCL (TAW – HUH) & SCL (HHS) Monthly Operational Airborne Rail Noise Monitoring Report (Wing ▇▇▇▇ Building) No. 5 - Time weighting : Fast - Duration of measurement : LAeq 30 min (with data being logged at every one second) • Prior to and after each noise measurement, the sound level meter was calibrated using the Calibrator for 94 dB at 1000 Hz. If the difference in the calibration level before and after measurement was more than 1 dB (A), the measurement is considered invalid and repeat of noise measurement should be required after repair or re-calibration of the equipment. • Details were recorded when intrusive noise was observed. Noise sources and duration were also recorded during the measurement process. • All the monitoring data within the sound level meter system were downloaded through the computer software. All these data were then checked and reviewed properly. • The weather condition during the monitoring period was recorded by the monitoring staff. • Noise monitoring was conducted in the absence of fog, rain, and wind with a steady speed lower than 5 m/s, or wind with gusts lower than 10 m/s. 2.4.2 Calibration certificates for the equipment employed for monitoring (Table 2.1 refers) are presented in Appendix A.

Monitoring Procedures. 2.4.1 During the noise monitoring, the following procedures were followed: • All measurements were made in facade type. The microphone of the sound level meter was AECOM Asia Co. Ltd. 3 April 2020 MTR Corporation Limited Consultancy Agreement No. C11033 SCL (TAW – HUH) & SCL (HHS) Monthly Operational Airborne Rail Noise Monitoring Report (Festival City) No.2 positioned 1m exterior of the sensitive receivers and lowered sufficiently so that the external wall of the building acts as a reflecting surface. • Parameters such as frequency weighting, the time weighting and the duration of measurement were set as follows: - Frequency weighting : A AECOM Asia Co. Ltd. 3 November 2021 MTR Corporation Limited Consultancy Agreement No. C11033 SCL (TAW – HUH) & SCL (HHS) Monthly Operational Airborne Rail Noise Monitoring Report (Wing ▇▇▇▇ Building) No. 5 - Time weighting : Fast - Duration of measurement : LAeq 30 min (with data being logged at every one second) • Prior to and after each noise measurement, the sound level meter was calibrated using the Calibrator for 94 dB at 1000 Hz. If the difference in the calibration level before and after measurement was more than 1 dB (A), the measurement is considered invalid and repeat of noise measurement should be required after repair or re-calibration of the equipment. • Details were recorded when intrusive noise was observed. Noise sources and duration were also recorded during the measurement process. • All the monitoring data within the sound level meter system were downloaded through the computer software. All these data were then checked and reviewed properly. • The weather condition during the monitoring period was recorded by the monitoring staff. • Noise monitoring was conducted in the absence of fog, rain, and wind with a steady speed lower than 5 m/s, or wind with gusts lower than 10 m/s. 2.4.2 Calibration certificates for the equipment employed for monitoring (Table 2.1 refers) are presented in Appendix A.

Monitoring Procedures. 2.4.1 During the noise monitoring, the following procedures were followed: • All measurements were made in facade type. The microphone of the sound level meter was positioned 1m exterior of the sensitive receivers and lowered sufficiently so that the external wall of the building acts as a reflecting surface. • Parameters such as frequency weighting, the time weighting and the duration of measurement were set as follows: - Frequency weighting : A - Time weighting : Fast AECOM Asia Co. Ltd. 3 November October 2021 MTR Corporation Limited Consultancy Agreement No. C11033 SCL (TAW – HUH) & SCL (HHS) Monthly Operational Airborne Rail Noise Monitoring Report (Wing ▇▇▇▇ Building) No. 5 - Time weighting : Fast 4 - Duration of measurement : LAeq 30 min (with data being logged at every one second) • Prior to and after each noise measurement, the sound level meter was calibrated using the Calibrator for 94 dB at 1000 Hz. If the difference in the calibration level before and after measurement was more than 1 dB (A), the measurement is considered invalid and repeat of noise measurement should be required after repair or re-calibration of the equipment. • Details were recorded when intrusive noise was observed. Noise sources and duration were also recorded during the measurement process. • All the monitoring data within the sound level meter system were downloaded through the computer software. All these data were then checked and reviewed properly. • The weather condition during the monitoring period was recorded by the monitoring staff. • Noise monitoring was conducted in the absence of fog, rain, and wind with a steady speed lower than 5 m/s, or wind with gusts lower than 10 m/s. 2.4.2 Calibration certificates for the equipment employed for monitoring (Table 2.1 refers) are presented in Appendix A.