Common use of Air Quality Monitoring Clause in Contracts

Air Quality Monitoring. 3.1.1 In accordance with the Project Specific EM&A Manual, impact 1-hour Total Suspended Particulates (TSP) monitoring was conducted for at least three times every 6 days, while impact 24-hour TSP monitoring was carried out for at least once every 6 days at the 4 monitoring stations (AMS2, AMS3B, AMS6 and AMS7). 3.1.2 The monitoring locations for impact air quality monitoring are depicted in Figure 2. However, for AMS6 (Dragonair/CNAC (Group) Building), permission on setting up and carrying out impact monitoring works was sought, however, access to the premise has not been granted yet on this report issuing date. 3.1.3 The weather was mostly sunny, with occasional cloudy and occasional rainy in the reporting quarter. The major dust source in the reporting quarter included construction activities from the Project, as well as nearby traffic emissions. 3.1.4 The number of monitoring events and exceedances recorded in each month of the reporting quarter are presented in Table 3.1 and Table 3.2 respectively. June 14 July 14 August 14 1-hr TSP AMS2 15 18 15 AMS3B 15 18 15 AMS7 15 18 15 24-hr TSP AMS2 5 6 5 AMS7 5 6 5 June 14 July 14 August 14 1-hr TSP AMS2 Action 0 0 0 Limit 0 0 0 AMS3B Action 0 0 0 Limit 0 0 0 AMS7 Action 0 0 0 Limit 0 0 0 AMS3B Action 0 0 0 AMS7 Action 0 0 0 3.1.5 All 1-Hour TSP and 24Hr TSP results were below the Action and Limit Level in the reporting month. 3.1.6 The event action plan is annexed in Appendix K. 3.1.7 Meteorological information collected from the wind station during the monitoring periods on the monitoring dates, as shown in Figure 2, including wind speed and wind direction, is annexed in Appendix H of monthly EM&A report June, July and August 2014 respectively.

Appears in 1 contract

Sources: Environmental Monitoring & Audit Report

Air Quality Monitoring. 3.1.1 In accordance with the Project Specific EM&A Manual, impact 1-hour Total Suspended Particulates (TSP) monitoring was conducted for at least three times every 6 days, while impact 24-hour TSP monitoring was carried out for at least once every 6 days at the 4 monitoring stations (AMS2, AMS3B, AMS6 and AMS7). 3.1.2 The monitoring locations for impact air quality monitoring are depicted in Figure 2. However, for AMS6 (Dragonair/CNAC (Group) Building), permission on setting up and carrying out impact monitoring works was sought, however, access to the premise has not been granted yet on this report issuing date. 3.1.3 The weather was mostly sunny, with occasional cloudy and occasional rainy in the reporting quarter. The major dust source in the reporting quarter included construction activities from the Project, as well as nearby traffic emissions. 3.1.4 The number of monitoring events and exceedances recorded in each month of the reporting quarter are presented in Table 3.1 and Table 3.2 respectively. June Monitoring Parameter Location No. of monitoring events September 14 July October 14 August November 14 1-hr TSP AMS2 15 18 15 15 AMS3B 15 18 15 15 AMS7 18 15 18 15 24-hr TSP AMS2 5 6 5 AMS7 5 AMS3B 6 5 June 5 AMS7 6 5 5 Monitoring Parameter Location Level of Exceedance Level of Exceedance September 14 July October 14 August November 14 1-hr TSP AMS2 Action 0 0 0 Limit 0 0 0 AMS3B Action 0 0 0 Limit 0 0 0 AMS7 Action 0 0 0 Limit 0 0 0 Total 0 0 0 24-hr TSP AMS2 Action 0 0 0 Limit 0 0 0 AMS3B Action 0 1 0 Limit 0 0 0 AMS7 Action 0 0 0 0 Limit 0 0 0 Total 0 1 0 3.1.5 One (1) 24-hour TSP result at AMS3B exceeded Action Level on 27 October 2014, after investigation, the exceedance was considered not related to this Contract. All 1-Hour TSP and 24Hr TSP results were below the Action and Limit Level in the reporting monthperiod. 3.1.6 The event 3.1.5.1 For the 24-hour TSP action plan is annexed in Appendix K.level exceedance on 27 October 2014 at AMS3B: 3.1.7 Meteorological 3.1.5.2 According to information collected from provided by the wind station Contractor, no land-based construction was being undertaken at Works Area WA2 during the monitoring periods period. 3.1.5.3 Site inspection has been conducted on 7 November 2014 to review works activities of adjacent construction site(s) for identifying the possible source(s), construction site was observed and the source of impact may be contributed by adjacent construction site which do not belongs to this contract. Please see below photo record for reference. 3.1.5.4 Functional checking on HVS at AMS3B was done. Air flow of the HVS was checked and the flow was steady during the 24-hr TSP sampling at AMS3B, initial flow, final flow and average rate are 1.34m3/min. The filter paper was re-weighted by the assigned HOKLAS laboratory and the result was reconfirmed. 3.1.5.5 The 1-hr TSP values recorded at AMS3B on 27 October 14, which are within the monitoring datesperiod of the 1-hr TSP, as shown in Figure 2were 75μg/m3, including wind speed 76μg/m3 and wind direction76μg/m3 respectively. All measured values are well below the Action and Limit Levels. 3.1.5.6 The measured 24-hr TSP values recorded at AMS2 and AMS7 (which are closer to the marine-based works areas) on 27 October 2014 date were 76μg/m3 and 92μg/m3, is annexed in Appendix H which are below the Action and Limit Levels. 3.1.5.7 The measured 24-hr TSP values recorded at AMS3B on next monitoring date, 1 November 2014 was 76μg/m3, which did not exceed the Action or Limit Level. 3.1.5.8 Below layout map shows the location of monthly EM&A report June, July and August HVS at AMS3B: • Photo record taken on 7 November 2014 respectively.during ad hoc site inspection: View B on layout map • Photo record taken on 7 November 2014 during ad hoc site inspection: View C on layout map 3.1.5.9 The following dust mitigation measures have been implemented at Works Area WA2:

Appears in 1 contract

Sources: Environmental Monitoring & Audit Report