|
APPENDICES |
Appendix A Site Map and Works Area
Appendix D Implementation Status of Environmental Mitigation Measures
Appendix E Monitoring Locations
Appendix G Interim Notifications of Environmental Quality Limits Exceedances
|
TABLES |
Table 3-1 Frequency of Air Quality; Noise and Water Quality Monitoring
Table 3-2 Air Quality Monitoring Locations
Table 3-3 Noise Monitoring Locations
Table 3-4 Water Quality Monitoring Locations
Table 3-5 Action & Limit Levels for Air Quality
Table 3-6 Action & Limit Levels for Noise
Table 3-7 Action & Limit Levels for Water Quality
Table 3-8 Summary of Air Quality Monitoring Results
Table 3-9 Summary of Impact Noise Monitoring Results
Table 3-10 Summary of Impact Water Quality Monitoring Results
Table 4-1 Waste Generated from July to September 2010
Table 4-2 Summary of Project- related Exceedances
Table 5-1 Cumulative Statistic of Environmental Complaints
Table 6-1 Cumulative Statistics of notification of summons and successful prosecutions
1 This quarterly EM&A summary report under the Main Contract for the Design and Construction of Tsuen Wan Drainage Tunnel (hereafter referred to as the “Project”) to Maeda-CREC-SELI Joint Venture (MCSJV), which summarises the findings of environmental impact monitoring works during the period from July to September 2010.
2 Noise monitoring was performed at five monitoring stations (NSR1, NSR3, NSR6, NSR8 and NSR9). Air quality monitoring was carried out at four monitoring stations (ASR1, ASR3, ASR8 and ASR9). Water quality monitoring was carried out at three monitoring stations (Intake I-1, Intake I-2 and Intake I-3). Noise level was measured in terms of Leq, L10 and L90 (30min). Air quality was measured in terms of 1-hour Total Suspended Particulates (TSP). Water quality was measured in terms of Temperature, pH, Dissolved Oxygen (DO), Turbidity (Tby) and Suspended Solid (SS).
3 Details of all monitoring stations are summarized in the below table.
|
Type of Monitoring |
Monitoring Station ID |
Name of Premises |
Status of Monitoring Works during the Reporting Period |
|
Air Quality Monitoring |
ASR1 |
Sik Sik Yuen Ho Fung College |
Ongoing |
|
ASR3 |
Hong Hoi Chee Hong Temple |
Ongoing |
|
|
ASR8 |
Beach Tower (Long Beach Gardens) |
Ongoing |
|
|
ASR9 |
Greenview Terrace (Block 1) |
Ongoing |
|
|
Noise Monitoring |
NSR1 |
Sik Sik Yuen Ho Fung College |
Ongoing |
|
NSR3 |
Hong Hoi Chee Hong Temple |
Ongoing |
|
|
NSR6 |
Squatters |
Ongoing |
|
|
NSR8 |
Beach Tower (Long Beach Gardens) |
Ongoing |
|
|
NSR9 |
Greenview Terrace (Block 1) |
Ongoing |
|
|
Water Quality Monitoring |
I-1 |
Intake I-1 |
Ongoing |
|
I-2 |
Intake I-2 |
Ongoing |
|
|
I-3 |
Intake I-3 |
Ongoing |
|
|
O-1 |
Outfall O-1 |
Not yet commenced until construction of stilling basin is in place. |
4 The major construction activities undertaken by the Contractor during the period from July to September 2010 include site cleaning and tidying at I-1, I-2, I-3 and outfall; pre-bored H-pile drilling for spiral ramp excavation at outfall; pre-bored H-pile drilling for CPR open excavation at outfall; structural steelwork erection for muck hopper and conveyor support at outfall; assembly of TBM at outfall; TBM drilling of the tunnel and mucking out of tunnel spoil at outfall; erection of site office at outfall; installation of noise enclosure to gantry crane structure at I-2 and outfall; drilling and rock breaking for shaft excavation at I-3; temporary rock dowel drilling and installation at I-3; excavation of man access shaft & vortex shaft at I-2; pipe jacking installation at Portion G at I-2; mini-pile construction for temporary platform at Portion G at I-2; cascade and channel modification concrete structure works at I-1; horizontal drilling at I-1; drilling and excavation of vortex shaft at I-3; construction of skin wall at I-3; and pipe jacking at Portion G at I-2.
5 No construction activities were carried out during restricted hours during the reporting period.
6 No project related exceedances of air quality, noise and water quality monitoring was recorded. The below table summarizes the exceedances of air quality, noise and water quality in the reporting period.
|
Parameter |
Action Level Exceedance |
Limit Level Exceedance |
|
Air |
One recorded on 3 Sep at ASR1 |
Nil |
|
Noise |
Nil |
Nil |
|
DO |
Nil |
Nil |
|
Turbidity |
One recorded on 13 Sep 2010 at I-1 |
One recorded on 23 Jul 2010 at I-1 One recorded on 23 Jul 2010 at I-2 Two recorded on 23 Jul and 10 Sep 2010 at I-3 |
|
SS |
One recorded on 2 Jul 2010 at I-2 |
Three recorded on 23 Jul, 16 Aug and 20 Aug 2010 at I-1 Four recorded on 12 Jul, 19 Jul, 23 Jul and 13 Sep at I-2 One recorded on 11 Aug at I-3 |
7 Waste figures during the reporting period are summarized in the table below.
|
Status of Waste Management |
|
|
Inert C&D Material Disposed of to Public Fill at Tuen Mun (m3) |
10626.8 |
|
Inert C&D Material Reused in this Contract (m3) |
605.0 |
|
Inert C&D Material Reused in other Contract* (m3) |
987.5 |
|
Metals Generated (kg) |
36.3 |
|
Paper / Cardboard Packaging (kg) |
350.0 |
|
Plastics (kg) |
454.0 |
|
Chemical Waste (kg) |
230.0 |
|
General Waste Disposed of to NENT Landfill (m3) |
47.8 |
* Other Contracts include DC/2007/08, HY/2007/09, DC/2007/17, DC/2008/12 and Wo Shang Wai.
8 During the reporting period, one environmental complaint was received. DSD received a public complaint regarding choked sewage manhole (MH1) at Lo Wai Road construction site on 27 August 2010 and conducted site inspection on 30 September 2010. SOR’s representative with the Contractor conducted site investigation and rectified on 01 September 2010.
9 No Notification of Summons was received since the commencement of the Project.
1.1.1 The Drainage Services Department (DSD) proposes to construct a tunnel of an internal diameter of 6.5m and length 5.13km, with the purpose to alleviate the flooding risk in Tsuen Wan and Kwai Chung.
1.1.2 This project is a Designated Project under Schedule 2 Part I Category Q, of the Environmental Impact Assessment Ordinance (EIAO) as part of the proposed Tsuen Wan Drainage Tunnel (TWDT) passes underneath the existing Tai Mo Shan Country Park. An Environmental Impact Assessment (EIA) Study has therefore been undertaken to provide information on the nature and extent of environmental impacts arising from the construction and operation of the proposed designed project and related activities taking place concurrently. From the EIA the recommendations for monitoring contained herein, are made.
1.1.3 The Maeda-CREC-SELI Joint Venture (MCSJV) was awarded by DSD with the Contract – Design and Construction of Tsuen Wan Drainage Tunnel.
1.1.4 Hyder was commissioned by the MCSJV as the ET to implement an EM&A program in accordance with the EM&A Manual. The proposed tunnel section flows from the junction of Shing Mun Road and Wo Yi Hop Road and discharges to south of Yau Kom Tau underneath Castle Peak Road as shown in Appendix A.
1.1.5 The construction works of the Project commenced on January 2008. This is the tenth quarterly EM&A report summarising the impact monitoring results and audit findings of the EM&A program during the reporting period between July and September 2010.
2.1 Project Organization and Management Structure
2.1.1 The organization chart and lines of communication with respect to the on-site environmental management are shown in Appendix B.
2.2.1 It is anticipated that the overall project programme from the detail design to completion of all civil works shall take approximately 54 months. The construction programme is presented in Appendix C.
2.2.2 The major construction activities undertaken in the reporting quarter are:
· Site cleaning and tidying at I-1, I-2, I-3 and outfall;
· Pre-bored H-pile drilling for spiral ramp excavation at outfall;
· Pre-bored H-pile drilling for CPR Open Excavation at outfall;
· Structural steelwork erection for muck hopper and conveyor support at outfall;
· Assembly of TBM at outfall;
· TBM drilling of the tunnel and mucking out of tunnel spoil at outfall;
· Erection of site office at outfall;
· Installation of noise enclosure to gantry crane structure at I-2 and outfall;
· Drilling and rock breaking for shaft excavation at I-3;
· Temporary rock dowel drilling and installation at I-3;
· Excavation of man access shaft & vortex shaft at I-2;
· Pipe jacking installation at Portion G at I-2;
· Mini-pile construction for temporary platform at Portion G at I-2;
· Cascade and channel modification concrete structure works at I-1;
· Horizontal Drilling at I-1;
· Drilling and excavation of vortex shaft at I-3;
· Construction of skin wall at I-3;
· Pipe Jacking at Portion G at I-2.
2.3.1 The environmental mitigation measures that have been implemented and their status are given in Appendix D.
3.1.1 The EM&A requirements are stipulated in the EM&A Manual. The principal purposes of the EM&A program are to assess the compliance with applicable environmental legislation and associated regulations; to ensure the implementation of mitigation measures specified in the EM&A Manual; and to identify any remedial works necessary for redressing any unacceptable or unanticipated environmental impacts.
3.2 EM&A on Air Quality; Noise and Water Quality
3.2.1 The air quality, noise and water quality monitoring frequencies and parameters are shown in Table 3-1.
Type of Monitoring |
Monitoring Station ID |
Parameter |
Frequency |
|
Air Quality Monitoring |
ASR1; ASR3; ASR8 and ASR9 |
1-hour TSP |
Once every 6 days |
|
Noise Monitoring |
NSR1; NSR3; NSR6; NSR8 and NSR9 |
Leq (30 min.) |
Once every week |
|
Water Quality Monitoring |
I-1; I-1-C; I-2; I-2-C; I-3; I-3-C |
DO (mg/l) |
Three days per week |
|
SS (mg/l) |
|||
|
Turbidity (NTU) |
|||
|
pH |
|||
|
Temperature (oC) |
Table 3-1 Frequency of Air Quality; Noise and Water Quality Monitoring
3.3.1 The monitoring locations for air quality; noise and water quality are shown in Tables 3-2; 3-3; 3-4 and Appendix E.
|
Monitoring Station ID |
Name of Premises |
Floor Level |
|
ASR1 |
Sik Sik Yuen Ho Fung College |
G/F |
|
ASR3 |
Hong Hoi Chee Hong Temple |
Podium |
|
ASR8 |
Beach Tower (Long Beach Gardens) |
G/F |
|
ASR9 |
Greenview Terrace (Block 1) |
G/F |
Table 3-2 Air Quality Monitoring Locations
|
Name of Premises |
Floor Level |
|
|
NSR1 |
Sik Sik Yuen Ho Fung College |
G/F |
|
NSR3 |
Hong Hoi Chee Hong Temple |
Podium |
|
NSR6 |
Squatters |
G/F |
|
NSR8 |
Beach Tower (Long Beach Gardens) |
G/F |
|
NSR9 |
Greenview Terrace (Block 1) |
Podium (up to 6 July 2009) Roof* (from 16 July 2009) |
* The noise monitoring location of NSR9 had been adjusted at rooftop from 16 July 2009.
Table 3-3 Noise Monitoring Locations
Monitoring Station ID |
Name of Premises |
|
I-1 |
Intake I-1 |
|
I-1-C |
Control of Intake I-1 |
|
I-2 |
Intake I-2 |
|
I-2-C |
Control of Intake I-2 |
|
I-3 |
Intake I-3 |
|
I-3-C^ |
Control of Intake I-3 |
|
O-1 (FT) & (ET)* |
Outfall 1During Flood Tide and Ebb Tide |
|
O-1-C (FT)*# |
Control of Outfall O-1 During Flood Tide |
|
O-1-C (ET)*# |
Control of Outfall O-1 During Ebb Tide |
Note: *Water quality monitoring will be undertaken when the construction of the outfall basin at the seashore is started.
#Note that there are two control stations for Outfall O-1; one for sampling during flood tide and one for sampling during ebb tide. Only one of those control stations for Outfall O-1 shall be sampled during each sampling. Control station to be sampled will be determined according to the tidal information provided by the Hong Kong Observatory.
^ The upper stream location (I-3-C^) had been relocated from the end of February 2009 due to coarse stone blockage.
Table 3-4 Water Quality Monitoring Locations
3.4 Performance Limits (AL Levels)
3.4.1 In accordance with the EM&A Manual; the appropriate Action and Limit Levels for Air Quality; Noise and Water Quality were established and are presented in Table 3-5; Table 3-6 and Table 3-7. Should non-compliance of the air quality; noise and water quality criteria occur; actions in accordance with the Event / Action Plan stipulated in contract specific EM&A Manual should be carried out.
|
Station |
1-hr TSP Level in μg/m3 |
|
|
Action Level |
Limit Level |
|
|
ASR1 |
307 |
500 |
|
ASR3 |
327 |
500 |
|
ASR8 |
337 |
500 |
|
ASR9 |
329 |
500 |
Table 3-5 Action & Limit Levels for Air Quality
Time Period |
Action |
Limit |
|
0700 – 1900 hrs on normal weekdays |
When one documented complaint is received |
75 dB(A)* |
* For educational establishments the limit level shall be 70dB(A) and reduced to 65dB(A) during examination periods between 0700-1900 hrs on normal weekdays.
Table 3-6 Action & Limit Levels for Noise
|
Parameters |
Action |
Limit |
|
DO in mg/l (Surface; Middle & Bottom) |
Surface & Middle 5%-ile of baseline data for surface and middle layer.
Bottom 5%-ile of baseline data for bottom layer. |
Surface & Middle 4mg/l except 5mg/l for FCZ or 1%-ile of baseline data for surface and middle layer Bottom 2mg/l or 1%-ile of baseline data for bottom layer |
|
SS in mg/l (Depth-averaged) |
95%-ile of baseline data or 120% of upstream control station’s SS at the same tide of the same day |
99%-ile of baseline or 130% of upstream control station’s SS at the same tide of the same day and specific sensitive receiver water quality requirements (e.g. required suspended solids levels for concerned sea water intakes) |
|
Turbidity (Tby) in NTU (Depth-averaged) |
95%-ile of baseline data or 120% of upstream control station’s Tby at the same tide of the same day |
99%-ile of baseline or 130% of upstream control station’s Tby at the same tide of the same day |
Notes:
· For DO; non-compliance of the water quality limits occurs when monitoring result is lower than the limits.
· For SS and Tby; non-compliance of the water quality limits occurs when monitoring result is higher than the limits.
· All the figures given in the table are used for reference only and the EPD may amend the figures whenever it is considered as necessary.
Table 3-7 Action & Limit Levels for Water Quality
3.5.1 A summary of air quality monitoring results is presented in Table 3-10 and Appendix F.
|
1-hour TSP (mg/m3) |
Action Level |
Limit Level |
|||
|
Range |
(mg/m3) |
(mg/m3) |
|||
|
ASR1 |
35.4 |
- |
351.1 |
307 |
500 |
|
ASR3 |
42.3 |
- |
247.3 |
327 |
500 |
|
ASR8 |
21.6 |
- |
191.9 |
337 |
500 |
|
ASR9 |
25.6 |
- |
260.5 |
329 |
500 |
Italic indicates the exceedances of Action Levels
Bold indicates the exceedances of Limit Levels
Table 3-8 Summary of Air Quality Monitoring Results
3.5.2 In this reporting quarter, the first hour 1-hr TSP monitoring at ASR 1 on 3 September 2010 was exceeded the Action Level. From the on-site observation, only the general site cleaning; re-erecting façade scaffolding platform at Spiral Ramp Shaft; and erecting formwork for Bay 14 of Spiral Ramp Shaft were observed and no dusty activity was found at the site area. Relative high Air Pollution Index (API - 71) was recorded on 03 September 2010 during the measurement period. Contractor was still requested to provide water spraying for dust suppression. For the subsequent monitoring results (2nd, 270.6 mg/m3 and 3rd, 256.0 mg/m3), no exceedance was recorded.
3.5.3 All measured noise monitoring levels were complying with the Action and Limit Levels in the reporting period. A summary of noise monitoring results is presented in Table 3-9 and Appendix F.
|
Leq (30mins) dB(A) |
Limit Level |
|||
|
Range |
dB(A) |
|||
|
NSR1 |
62 |
- |
65 |
70 |
|
NSR3 |
60 |
- |
71 |
75 |
|
NSR6 |
52 |
- |
67 |
75 |
|
NSR8 |
62 |
- |
65 |
75 |
|
NSR9 |
64 |
- |
73 |
75 |
Bold indicates the exceedances of Limit Levels
Table 3-9 Summary of Impact Noise Monitoring Results
3.5.4 A summary of water quality monitoring results is presented in Table 3-10 and Appendix F.
3.5.5 None of exceedance related to project construction activities was recorded during reporting quarter but a total of 14 non project related exceedances were recorded.
3.5.6 A total of 8 non project related exceedances were recorded in July 2010 including:
· The exceedance of Control Action Levels of SS (120% higher than I-2-C) recorded at I-2 on 2 July 2010 was below baseline Action / Limit Level and was within the range of baseline SS concentration. Construction activities including general site cleaning and house keeping; erection of noise enclosure at man access shaft; excavation at vortex drop shaft and man access shaft; pipe jacking and erection of working platform for mini-pile construction were undertaken during the measurement and no direct disturbance was observed from the site. Thus, the exceedance of SS level recorded on 2 July 2010 at I-2 was considered to be contributed by natural variation and no action was therefore required.
· The exceedance of Control Limit Levels of SS (130% higher than I-2-C) recorded at I-2 on 12 July 2010 was below baseline Action / Limit Level and was within the range of baseline SS concentration. Construction activities including general site cleaning and house keeping; excavation at man access shaft; drilling and rock splitting at vortex drop shaft; pipe jacking and drilling for mini-pile construction were undertaken during the measurement and no direct disturbance was observed from the site. Thus, the exceedance of SS level recorded on 12 July 2010 at I-2 was considered to be contributed by natural variation and no action was therefore required.
· The exceedance of Control Limit Levels of SS (130% higher than I-2-C) recorded at I-2 on 19 July 2010 was below baseline Action / Limit Level and was within the range of baseline SS concentration. Construction activities including general site cleaning and house keeping; excavation at man access shaft; rock splitting at vortex drop shaft; extension of steel platform; pipe jacking and mini piling were undertaken during the measurement and no direct disturbance was observed from the site. Thus, the exceedance of SS level recorded on 19 July 2010 was considered to be contributed by natural variation and no action was therefore required.
· The exceedance of baseline limit level of turbidity level recorded at I-1 on 23 July 2010 was above baseline Limit Level and was beyond the range of baseline turbidity concentration. The exceedance of baseline limit level of SS recorded at I-1 on 23 July 2010 was above baseline Limit Level and was beyond the range of baseline SS concentration. As black storm signal was held on 22 July 2010, no construction activity was carried out on the following day. The exceedances were considered contributed by high turbidity and SS level recorded at control station (I-1-C) and no action was therefore required as the turbidity result at monitoring station was below the Action and Limit Levels of control station.
· The exceedance of baseline limit level of turbidity level recorded at I-2 on 23 July 2010 was above baseline Limit Level and was beyond the range of baseline turbidity concentration. The exceedance of control Limit Level of SS (130% higher than I-2-C) recorded at I-2 on 23 July 2010 was below baseline Action / Limit Level and was within the range of baseline SS concentration. As black storm signal was held on 22 July 2010, no construction activity was carried out on the following day. The exceedance of turbidity and SS levels were considered contributed by high turbidity level recorded at control station (I-2-C) and natural variation and no action was therefore required as the turbidity result at monitoring station was below the action and limit level of control station.
· The exceedance of baseline limit level of turbidity level recorded at I-3 on 23 July 2010 was above baseline Limit Level and was beyond the range of baseline turbidity concentration. As black storm signal was held on 22 July 2010, no construction activity was carried out on the following day. The exceedance of the turbidity level was considered contributed by high turbidity level recorded at control station (I-3-C) and no action therefore required as the turbidity result at monitoring station was below the action and limit level of control station.
3.5.7 A total of 3 non project related exceedances were recorded in August 2010 including:
· SS exceedance of Control Limit Level was recorded at I-3 (130% higher than I-3-C) on 11 August 2010 but within the baselines range of SS concentration. Construction activities including drilling holes and breaking for Spiral Ramp excavation and excavation for PB Wall working platform were undertaken during the measurement and no direct disturbance was observed from the site. Thus, the exceedance was considered to be contributed by natural variation and no action therefore required.
· The SS exceedance of Control Limit Level was recorded at I-1 on 16 August 2010 of SS (130% higher than I-1-C) but within the baseline range of SS concentration. Construction activities including general site cleaning; dismantle; dismantle HDD area working platform and remove debris and rubbish from spiral ramp shaft; and dismantle and remove drilling rig from HDD working platform were undertaken during the measurement and no direct disturbance was observed from the site. Thus, the exceedance was considered to be contributed by natural variation and no action therefore required.
· Exceedance of SS for Limit Level was recorded at I-1 on 20 August 2010 which was above the baseline level and beyond the range of baseline SS concentration. However, in-situ turbidity monitoring at I-1 (7.85 NTU) was below the Action / Limit Level (9.75 / 12.47). Construction activities including general site cleaning; remove debris and rubbish from Sprial Ramp Shaft; and dismantle HDD area working platform were undertaken during the monitoring. The Contractor has provided the wastewater treatment plant for the site effluent before discharge and erected the sealed concrete block wall to separate the existing stream and site works area. No wastewater directly discharge from the site was found during monitoring. The exceedance of SS at I-1 on 20 August 2010 was considered not project related. Since shallow water at I-1 on 20 August 2010 during collect the water sample, exceedance of SS on 20 August 2010 was suspected to be related to sand grabbed into the container by the site staff during sample collected. We have reminded our site staff to take extra care for collecting water sample under shallow water condition and prevent the recurrence of similar incident. No SS exceedance at I-1 (3.55 mg/L) was occurred and below the Action / Limit level on 23 August 2010. Thus, the exceedance was considered not to be contributed by construction activities and no action therefore required.
3.5.9 A total of 3 non project related exceedances were recorded in September 2010 including:
· Exceedance of Turbidity Limit Level was recorded at I-3 on 10 September 2010. The measured turbidity level was above baseline Limit Level. It was also beyond the range of baseline turbidity concentration (1.41 - 4.23 NTU). A high turbidity level of 9.64 was recorded at Control Station (I-3-C) and heavy rainfall was recorded on the same day. General site cleaning, PB wall concreting of Bay 2, 4 & 6, and rock breaking for Spiral Ramp excavation were undertaken during measurement. No direct disturbance was observed from the site and the turbidity result at monitoring station was below the level of control station. Thus, the exceedance is considered to be contributed by natural variation with heavy rainfall (early morning) and no action should be required.
· Exceedance of Turbidity Action Level was recorded at I-1 on 13 September 2010. The measured turbidity level was above baseline Action Level. It was within the range of baseline turbidity concentration (3.13 - 13.15 NTU). A high turbidity level of 10.60 is recorded at Control Station (I-1-C). Heavy rainfall was recorded on 12 Sep 2010. General site cleaning, steel bracket fixing for planter wall; erecting formwork for Bay 15 & 16 of Spiral Ramp Shaft were undertaken during measurement. No direct disturbance was observed from the site and the turbidity result at monitoring station was below the level of control station. Besides, as advised by the Contractor, rocks and soil were found washed down to the stream from the upstream. Thus, the exceedance is considered to be contributed by natural variation and no action should be required.
· Exceedance of SS Limit Level was recorded at I-2 (130% higher than I-2-C) on 13 September 2010. But the measured SS level was below baseline Action / Limit Level and was within the range of baseline SS concentration (1 - 8.5mg/L). General site cleaning, excavation (rock splitting and drilling holes) at vortex drop shaft and installation of dowel bar; and excavation (rock splitting and drilling holes) at man access shaft were undertaken during the measurement. No direct disturbance was observed from the site. Thus, the exceedance is considered to be contributed by natural variation and no action should be required.
3.5.9 The above mentioned exceedances were considered as non-project related However, proper mitigation measures had been implemented during measurements. Details of the above mentioned investigations could be referred to the notifications of exceedances as enclosed in Appendix G.
Monitoring Station |
Temperature |
DO (mg/L) |
pH |
Turbidity (NTU) |
Suspended Solid (mg/L) |
||||||||||||||||||||
|
Range |
Range |
Action / Limit Level |
Range |
Range |
Action / Limit Level |
Range |
Action / Limit Level |
||||||||||||||||||
|
I-1 |
24.90 |
- |
30.50 |
4.42 |
|
7.60 |
3.42 |
/ |
3.34 |
7.05 |
- |
8.60 |
2.46 |
- |
16.27 |
9.75 |
/ |
12.47 |
2.00 |
- |
34.00 |
8.85 |
/ |
10.17 |
|
|
I-1C |
25.00 |
- |
30.60 |
4.40 |
|
7.53 |
|
- |
|
7.04 |
- |
8.61 |
2.62 |
- |
17.19 |
|
- |
|
2.00 |
- |
11.90 |
|
- |
|
|
|
I-2 |
25.45 |
- |
30.60 |
4.54 |
|
7.27 |
3.66 |
/ |
3.63 |
7.07 |
- |
8.45 |
1.48 |
- |
10.13 |
6.63 |
/ |
6.99 |
2.00 |
- |
6.35 |
7.68 |
/ |
8.34 |
|
|
I-2C |
25.20 |
- |
30.50 |
4.64 |
|
7.01 |
|
- |
|
7.10 |
- |
8.41 |
1.49 |
- |
10.76 |
|
- |
|
2.00 |
- |
4.05 |
|
- |
|
|
|
I-3 |
24.90 |
- |
30.60 |
4.53 |
|
7.15 |
3.65 |
/ |
3.51 |
7.09 |
- |
8.51 |
1.75 |
- |
9.52 |
3.99 |
/ |
4.18 |
2.00 |
- |
5.50 |
6.13 |
/ |
7.23 |
|
|
I-3C |
24.90 |
- |
30.70 |
4.50 |
|
7.14 |
|
- |
|
7.11 |
- |
8.55 |
1.81 |
- |
9.64 |
|
- |
|
2.00 |
- |
7.45 |
|
- |
|
|
Note: Italic indicates the exceedances of Action Levels
Bold indicates the exceedances of Limit Levels
Table 3-10 Summary of Impact Water Quality Monitoring Results
4 Quarterly Summary; Environmental Condition and Non-Compliance Records
4.1 Summary of Waste Disposal Records
4.1.1 According to the information provided by the Contractor; the quantities of C&D materials in the reporting period are summarized in Table 4-1
|
Status of Waste Management |
July 10 |
August 10 |
September 10 |
|
Inert C&D Material Disposed of to Public Fill at Tuen Mun (m3) |
2,390.50 |
758.60 |
7,477.70 |
|
Inert C&D Material Reused in this Contract (m3) |
430.00 |
160.00 |
15.00 |
|
Inert C&D Material Reused in other Contract* (m3) |
325.00 |
270.00 |
392.50 |
|
Metals Generated (kg) |
21.3 |
5 |
10 |
|
Paper / Cardboard Packaging (kg) |
150 |
0 |
200 |
|
Plastics (kg) |
4 |
447 |
3 |
|
Chemical Waste (kg) |
0 |
230 |
0 |
|
General Waste Disposed of to NENT Landfill (m3) |
9.1 |
21.3 |
17.4 |
* Other Contracts include DC/2007/08, DC/2007/06, DC/2006/04, ST/2008/02, HY/2007/09, DC/2007/17, DC/2008/12 and Wo Shang Wai.
Table 4-1 Waste Generated from July to September 2010
4.2.1 The weather conditions during the period from July to September 2010 were mainly sunny, fine, cloudy and rainy.
4.3 Summary of Project-Related Exceedances
4.3.1 Summary of exceedance results are summarized in Table 4-2. For the exceedances that are considered to be non-related to the construction activities; please refer to the monthly EM&A reports separately. Appendix G shows the Interim Notifications of Environmental Quality Limits Exceedances recorded in the reporting period.
|
Environmental Monitoring |
Total No. of Measurement |
Action Level Exceedance |
% of Action Level Exceedance |
Limit Level Exceedance |
% of Limit Level Exceedance |
|
Air Quality |
204 |
0 |
0 |
0 |
0 |
|
Noise |
65 |
0 |
0 |
0 |
0 |
|
Water |
234 |
0 |
0 |
0 |
0 |
Table 4-2 Summary of Project- related Exceedances
5.1.1 A complaint hotline at 9850 3241 of the Contractor has been established for the Project.
5.1.2 During the reporting period, one environmental complaint was received. DSD received a public complaint regarding choked sewage manhole (MH1) at Lo Wai Road construction site on 27 August 2010 and conducted site inspection on 30 September 2010. SOR’s representative with the Contractor conducted site investigation and rectified on 01 September 2010. Details of the complaint investigation and observations can be referred to Appendix H.
5.1.3 Cumulative statistics of environmental complaints are shown in Table 5-1.
|
Complaints Received in the Reporting Period |
Cumulative Number of Complaints |
|
1 |
18 |
Table 5-1 Cumulative Statistic of Environmental Complaints
6 Summary of Notification of Summons; Successful Prosecutions and Corrective Actions
6.1.1 No summons and successful prosecution was received during the reporting period.
6.1.2 Cumulative statistics of Notification of Summon; Successful Prosecutions and Convictions are shown in Table 6-1.
|
Notification of Summons |
Successful Prosecution |
||
|
July – September 10 |
Cumulative |
July – September 10 |
Cumulative |
|
0 |
0 |
0 |
0 |
Table 6-1 Cumulative Statistics of notification of summons and successful prosecutions
7 Comments; Recommendations and Conclusion
7.1.1 During the reporting period, no project related exceedance of noise monitoring was recorded. Exceedances of air quality and water quality monitoring were recorded but none of these exceedances were related to Project’s construction activities.
7.1.2 Waste management mitigation measures have been implemented by the Contractor within the reporting period. Waste figures during the reporting period are summarized in the below table.
|
Status of Waste Management |
|
|
Inert C&D Material Disposed of to Public Fill at Tuen Mun (m3) |
10626.8 |
|
Inert C&D Material Reused in this Contract (m3) |
605.0 |
|
Inert C&D Material Reused in other Contract* (m3) |
987.5 |
|
Metals Generated (kg) |
36.3 |
|
Paper / Cardboard Packaging (kg) |
350.0 |
|
Plastics (kg) |
454.0 |
|
Chemical Waste (kg) |
230.0 |
|
General Waste Disposed of to NENT Landfill (m3) |
47.8 |
* Other Contracts include DC/2007/08, DC/2007/06, DC/2006/04, ST/2008/02, HY/2007/09, DC/2007/17, DC/2008/12 and Wo Shang Wai.
7.1.3 During the reporting period, one environmental complaint was received on 27 August 2010. The complaint received was about choked sewage manhole (MH1) at Lo Wai Road construction site. Actions had been undertaken by the Contractor to follow up the complaints as mentioned in Section 5.The complaint was closed at the end of the reporting period.
7.1.4 No Notification of Summons has been received since the commencement of the Project.
|
|
|
|
Site Map and Works Area |
|
|
|
|
|
Organization Chart |
|
|
|
|
|
Work Programme |
|
|
|
|
|
Implementation Status of Environmental Mitigation Measures |
|
|
|
|
|
Monitoring Locations |
|
|
|
|
|
Monitoring Results |
|
|
|
|
|
Interim Notifications of Environmental Quality Limits Exceedances |
|
|
|
|
|
Complaint Log |