Results and Observations. 5.7.1 Dolphin surveys were conducted on 10, 11, 17 and 20 February 2014. In summary, a total of 223.4km of survey was conducted. 38.1km effort was conducted in February 2014 under sea condition Beaufort 4, nearly 82.85% of “on effort” survey was conducted under favourable conditions (Beaufort Sea State 3 or better), i.e. 185.3km. The details are shown below:-
5.7.2 The effort summary and sightings data are shown in Tables 5.3 and 5.4, respectively. The survey efforts conducted in February 2014 are plotted in Figure 5a-c. For Table 5.3, only on-effort information is included. Transects conducted in all Beaufort Sea State are included. Compared to previous monthly reports, the whole number Beaufort Sea State scale is used so as to ease comparison with other dolphin monitoring reports.
Results and Observations. 5.7.1 Dolphin surveys were conducted on 9, 10, 23 and 24 February 2015. A total of 218.9 km of transect line was conducted all of which during Beaufort Sea State 3 or better (favourable water conditions). Please note that that some lines were shortened due to works and/or shipping traffic. The effort summary and sightings data are shown in Tables 5.3 and 5.4, respectively. The survey efforts conducted in February 2015 are plotted in Figure 5a-b. For Table 5.3, only on-effort information is included. Transects conducted in all Beaufort Sea State are included. Compared to previous monthly reports, the whole number Beaufort Sea State scale is used so as to ease comparison with other dolphin monitoring reports.
Results and Observations. 4.7.1 Impact water quality monitoring was conducted at all designated monitoring stations in the reporting month. Except Impact water quality monitoring at sampling location IS(Mf)9. Sampling location IS(Mf)9 was found enclosed by silt curtain during the reporting month. Samples were taken about 140 meters away from IS(Mf)9. The sampling location‟s coordination (East 813226, North 818708) was recorded. The Contractor was advised to take corrective actions to the temporary arrangement of the perimeter silt curtain as soon as possible.
4.7.2 Impact water quality monitoring results and graphical presentations are provided in Appendix J.
4.7.3 No water quality exceedance was recorded in the reporting month.
4.7.4 Total of five (5) Action Level Exceedances at measured Suspended Solids (mg/L) were recorded during the reporting month. The number of exceedances recorded in the reporting month at each impact station is summarized in Table 4.5. Note: S: Surface; and M: Mid-depth.
4.7.5 Four (4) Action Level exceedances at measured Suspended Solids (mg/L) where recorded on 07 August 2013 during mid-flood tide at monitoring station IS(Mf)6, IS5, IS7 and SR3. For Action Level exceedances at measured Suspended Solids (mg/L), 24.7 mg/L, 29.8mg/L, 24.9 and 28.1 were recorded at Monitoring Station IS(Mf)6, IS5, IS7 and SR3 respectively.
4.7.5.1 For locations and type of active works carried out on 7 Aug 13, please refer to the above layout map.
4.7.5.2 Same type of works were carried out at the same locations on 5 and 9 Aug 13 but Suspended Solids values recorded at IS(Mf)6, IS5, IS7 and SR3 on 5 and 9 Aug 13 are below the Action and Limit Level during the same tide which indicates project works is unlikely to contribute to the action level exceedances recorded at IS(Mf)6, IS5, IS7 and SR3.
4.7.5.3 Monitoring Stations IS10 and IS(Mf)11 which are considered downstream to the active works of during mid flood tide. The Suspended Solids values recorded at IS10 and IS(Mf)11 are all below the Action and Limit Level during same tide on the same day which shows that the water quality noted downstream of active works during flood tide were not adversely affected by active works. Hence it is considered that the action level exceedances recorded at IS(Mf)6, IS5, IS7 and SR3 are unlikely contributed by project works.
4.7.5.4 Amongst the 4 exceedance stations, relatively higher SS value were recorded at IS5 and SR3 which are further away from HKBCF's active works than it is for IS(Mf)6...
Results and Observations. 2.7.1 The monitoring results for 1-hour TSP and 24-hour TSP are summarized in Table 2.4 and 2.5 respectively. Detailed impact air quality monitoring results are presented in Appendix G. Table 2.4 Summary of 1-hour TSP Monitoring Results in the Reporting Period Average (μg/m3) Range (μg/m3) Action Level (μg/m3) Limit Level (μg/m3) AMS2 83 81 – 86 374 500 AMS3A 84 81 – 88 368 500 AMS7 81 79 – 84 370 500 Table 2.5 Summary of 24-hour TSP Monitoring Results in the Reporting Period Average (μg/m3) Range (μg/m3) Action Level (μg/m3) Limit Level (μg/m3) AMS2 57 38 - 104 176 260 AMS3A 130 46 - 310 167 260 AMS7 92 40 - 188 183 260
2.7.2 The major dust source in the reporting period included construction activities from the Project, construction activities by other contacts, as well as nearby traffic emissions.
2.7.3 All 1-hour TSP results were below the Action and Limit Level at all monitoring locations in the reporting month.
2.7.4 However, two (2) 24-hour TSP results exceeded the Action Level on 13 and 29 April 13 at monitoring station AMS7 and AMS3A respectively. One (1) 24-hour TSP result exceeded the Limit Level on 08 April 2013 monitoring station AMS3A in the reporting month.
2.7.5 For the one (1) 24-hour TSP result exceeded the Limit Level on 8 April 13 at monitoring station AMS3A, according to information provided by the Contractor, land-based construction activity such as using canvas to cover sand material and stitching geotextile were being undertaken at Works Area WA2 during the monitoring period.
2.7.5.1 Functional checking on HVS at AMS3A was done. Air flow of the HVS was checked and the flow was steady during the 24-hr TSP sampling at AMS3A. The filter paper was re-weighted by the assigned HOKLAS laboratory and the result was reconfirmed.
2.7.5.2 As informed by the Contractor, construction activities like sheet piling and percussive piling, were carrying out by nearby private development project during the course of monitoring, which are close to the monitoring station AMS3A but beyond the site boundary of Works Area WA2. Traffics were observed passing exposed soil surfaces at those construction sites of nearby private development project. Please also see photo and layout map attached for reference of site conditions.
2.7.5.3 As refer to the wind data collected at wind station at Works Area WA2 during the monitoring period on 08 and 09 April 13 (as attached) East winds was prevailing during the monitoring period. Construction works carried out at cons...
Results and Observations. 2.7.1 The monitoring results for 1-hour TSP and 24-hour TSP are summarized in Table 2.4 and 2.5 respectively. Detailed impact air quality monitoring results are presented in Appendix G. Table 2.4 Summary of 1-hour TSP Monitoring Results in the Reporting Period Average (μg/m3) Range (μg/m3) Action Level (μg/m3) Limit Level (μg/m3) AMS2 74 70-77 374 500 AMS3B 74 69-80 368 500 AMS7A 74 72-78 370 500 Table 2.5 Summary of 24-hour TSP Monitoring Results in the Reporting Period Average (μg/m3) Range (μg/m3) Action Level (μg/m3) Limit Level (μg/m3) 2.7.2 The event action plan is annexed in Appendix L.
Results and Observations. 4.7.1 Impact water quality monitoring results and graphical presentations are provided in Appendix J. Note: S: Surface; and M: Mid-depth.
4.7.2 The event action plan is annexed in Xxxxxxxx X.
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Results and Observations. 2.7.1 The monitoring results for 1-hour TSP and 24-hour TSP are summarized in Table 2.4 and 2.5 respectively. Detailed impact air quality monitoring results are presented in Appendix G. Table 2.4 Summary of 1-hour TSP Monitoring Results in the Reporting Period Average (μg/m3) Range (μg/m3) Action Level (μg/m3) Limit Level (μg/m3) AMS2 78 71-84 374 500 AMS3B 79 73-84 368 500 AMS7 79 73-84 370 500 Table 2.5 Summary of 24-hour TSP Monitoring Results in the Reporting Period Average (μg/m3) Range (μg/m3) Action Level (μg/m3) Limit Level (μg/m3)
2.7.2 All 24-Hour TSP and 1-Hour TSP results were below the Action and Limit Level in the reporting month.
2.7.3 The event action plan is annexed in Appendix L.
2.7.4 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.
Results and Observations. 2.7.1 The monitoring results for 1-hour TSP and 24-hour TSP are summarized in Table 2.4 and 2.5 respectively. Detailed impact air quality monitoring results are presented in Appendix G. Table 2.4 Summary of 1-hour TSP Monitoring Results in the Reporting Period Average (μg/m3) Range (μg/m3) Action Level (μg/m3) Limit Level (μg/m3) AMS2 83 66 – 83 374 500 AMS3A 85 68 – 85 368 500 AMS7 83 61 – 83 370 500 Table 2.5 Summary of 24-hour TSP Monitoring Results in the Reporting Period Average (μg/m3) Range (μg/m3) Action Level (μg/m3) Limit Level (μg/m3) AMS2 24 6 – 34 176 260 AMS3A 46 27 – 101 167 260 AMS7 40 17 – 98 183 260
2.7.2 The major dust source in the reporting period included construction activities from the Project, construction activities by other contacts, as well as nearby traffic emissions.
2.7.3 All 1-hour TSP results and 24-hour TSP results were below the Action and Limit Level at all monitoring locations in the reporting month.
2.7.4 The event action plan is annexed in Appendix L.
2.7.5 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.
Results and Observations. 5.7.1 Dolphin surveys were conducted on 5, 6, 21, 28 and 31 August 2013. In summary, a total of 222.3km of “on effort” survey was conducted, 100% of “on effort” survey was conducted under favourable conditions (Beaufort Sea State 3 or better). The details are shown below:-
Results and Observations. 4.7.1 Impact water quality monitoring results and graphical presentations are provided in Appendix J.
4.7.2 One (1) Action Level exceedance of turbidity (NTU) was recorded at during mid flood tide at IS17 on 29 April 13. Four
