3. NOISE

3.1 Monitoring Requirement

3.1.1 In accordance with the approved EM&A Manuals, Leq (30min) monitoring is conducted for at least once a week during the construction phase between 0700 and 1900 on normal weekdays at the designated monitoring locations.

3.1.2 The monitoring equipment, monitoring methodology and monitoring schedule are detailed in the monthly EM&A Reports for EP-451/2013 prepared for Contract No. ED/2018/04.

3.2 Monitoring Locations

3.2.1 According to the EM&A Manual, three noise monitoring locations, namely KTD1, KTD2 and KER1, are covered by this Contract within the South Apron Area of Former Kai Tak Airport. The other two noise monitoring locations, which are identified in Cha Kwo Ling area, are farther than 300m away from the site boundary and thus not covered by this Contract. The monitoring works in Cha Kwo Ling area are covered by Contract No. ED/2018/04.

3.2.2 According to the approved alternative baseline air quality and noise monitoring locations (EPD reference: EP2/K19/A/21 Pt.5), the original monitoring locations (KTD1, KTD2 and KER1) are proposed to be replaced by alternative monitoring locations (KTD1a, KTD2a and KER1a) for noise monitoring.

3.2.3 According to the approved relocation of monitoring location KER1a (EPD reference: () in EP2/K19/A/21 Pt.5), the monitoring location KER1a are proposed to be relocated by alternative monitoring location KER1b for noise monitoring.

3.2.4 According to the approved relocation of monitoring location KTD2a (EPD reference: () in EP2/K19/A/21 Pt.6), the monitoring location KTD2a are proposed to be relocated by alternative monitoring location KTD2b for noise monitoring.

3.2.5 According to the approved relocation of monitoring location KTD2b (EPD reference: () in EP2/K19/A/21 pt.7), the monitoring location KTD2b are proposed to be relocated by alternative monitoring location KTD2c for noise monitoring.

3.2.6 As informed by the ET of Contract No. ED/2018/04, the monitoring location KTD1a and KER1b have been relocated to KTD1 and KER1 for noise monitoring on 3 August 2020.

3.2.7 The most updated locations are summarized in Table 3.1 and shown in Figure 2.

3.3 Results and Observations

3.3.1 The monitoring results and observations for KTD1, KTD2c and KER1 are reported in the Monthly EM&A Reports for EP-451/2013 prepared for Contract No. ED/2018/04.

3.3.2 A Limit Level exceedance for construction noise was recorded. Exceedance was recorded at KTD1 on 21 October 2020. No Action / Limit Level exceedance was recorded for construction noise at KTD2c and KER1 in the reporting month.

3.3.3 On 21 October 2020, at KTD1 a breaker from construction site of New Acute Hospital was operated continuously. The noise generated by the breaker during breaking activity dominates the ambient or background noise. Thus, it is considered that this exceedance is not project related.