Mott MacDonald Hong Kong Ltd. (“MMHK”) has been commissioned by the Gammon Engineering & Construction Company Limited, to undertake the Environmental Team (ET) services to carry out environmental monitoring and audit (EM&A) for Ocean Park Tai Shue Wan Development Water World.
This is the 5th Quarterly EM&A Summary report for the Tai Shue Wan Development Water World under Section 11.4 of the EM&A Manual (Register No.: AEIAR-184/2014). This report summarises the findings on EM&A during the period from 1 June 2018 to 31 August 2018.
Environmental Monitoring and Audit Activities
Environmental monitoring activities under the EM&A programme in the Reporting Period are summarized in the following table:
|
Environmental Aspect |
Environmental Monitoring Parameters / Inspection |
Total Occasions |
|
Construction Noise |
Leq(30min) Daytime |
26 |
|
Leq(15min) Addition monitoring |
26 |
|
|
Ecology |
Site Inspection |
3 |
|
Landscape and Visual |
Inspection of the mitigation measures implementation situation |
6 |
|
Site Inspection / Audit |
Environmental Team (ET), the Contractor and Project Management Representative (PMR) joint site inspection and auditing |
14 |
|
Independent Environmental Checker (IEC) joint site inspection and auditing |
4 |
Breaches of Action/Limit Levels
No exceedance of construction noise measurement and no Notifications of Exceedances (NOEs) were issued to the PMR, IEC and the Contractor. The statistics of environmental exceedance, NOE issued and investigation of exceedance are summarized in the following table:
|
Environmental Aspect |
Monitoring Parameter |
Action Level |
Limit Level |
Event & Action |
||
|
NOE Issued |
Investigation |
Corrective Actions |
||||
|
Construction Noise |
Leq(30min) Daytime |
0 |
0 |
0 |
0 |
0 |
Environmental Complaints
There was no record of complaints received in the Reporting Period.
Notification of Summons and Successful Prosecutions
There was no record of notification of summons and successful prosecution in the Reporting Period.
Reporting Changes
There are no reporting changes.
Future Key Issues
The contractor should pay attention to the following environmental issues and maintain relevant mitigation measures:
● Site formation for ride footing construction
● Cut soil slope and soil nail installation for Ride P1, P2, P3, P4 and P5
● Rock breaking and slope stabilization works for Ride P1 to P5
● Utilities diversion at A4
● Drainage works at A4
● Backfilling at South Plant Room
● Ricing Main construction (PJD & slope portions)
● Main Building: Column and wall construction, L3 column to Roof construction, Steel Platform for Shell A construction, B1 water tank, drainage and on grade slab. Block works and ABWF in B1, L1, L2 and L3 Secondary structure construction; area Pool B, C, D; Roof construction. L2, L1 on grade slab construction, L3 Slab B1-2, L3 A4-2, core structure and staircase, re L3 Slab construction
● South Transformer Room: ABWF
● South Plant Room: E&M
● North Plant Room: Removal of falsework, waterproofing for double slab and ABWF
● Spiral Ramp: Falsework for the RC construction
● External Area: Laying of underground utilities, removal of concrete paving
On 27 August 2014, the Environment Impact Assessment (EIA) Report and Environmental Monitoring and Audit (EM&A) Manual (Register No.: AEIAR-184/2014) for the “Tai Shue Wan Development at Ocean Park” (the Project) was approved and an Environmental Permit (EP) (Permit No.: EP-487/2014) was issued to the Ocean Park Corporation (Project Proponent).
The current valid EP (Permit No.: EP-487/2014/A) was issued on 10 January 2018 based on the Variation of Environmental Permit No. VEP-539/2017 which comprise variation of project boundary, location of sump pit and size of rising main. The layout plan of the Project is indicated in Appendix A.
Mott MacDonald Hong Kong Ltd. (“MMHK”) has been commissioned by Gammon Engineering & Construction Company Limited to undertake the Environmental Team (ET) services to carry out environmental monitoring and audit for the Ocean Park Tai Shue Wan Water World Project.
As part of the EM&A program, baseline monitoring for the required parameters including background noise, landscape & visual baseline review and baseline ardeid inspection were carried out between 24 October 2014 and 10 December 2014 by the environmental consultants of Ocean Park Corporation. Furthermore, the baseline monitoring report which was verified by the previous IEC was submitted to EPD and endorsed in December 2014.
The previous contract (Contract No.: TSW-C004) of Site Formation and Foundation Works has been completed since 31 May 2017 and the next construction phase (Contract No.: TSW-C006) for the Ocean Park Tai Shue Wan Development was handed over to Gammon Engineering & Construction Company Limited on 31 May 2017.
This report summarizes the findings during the Reporting Period from 1 June to 31 August 2018.
The project organization is shown in Appendix B. The responsibilities of respective parties are as follows:
Ocean Park Corporation
Ocean Park Corporation is the Project Proponent and the Permit Holder of the EP for the development of the Project and will assume overall responsibility for the project. An Independent Environmental Checker (IEC) shall be employed by Ocean Park Corporation to audit the results of the EM&A works carried out by the ET.
Environmental Protection Department (EPD)
EPD is the statutory enforcement body for environmental protection matters in Hong Kong.
Project Management Representative (PMR) of Ocean Park Corporation
The PMR is responsible for overseeing the construction works and for ensuring that the works are undertaken by the Contractor in accordance with the specification and contract requirements. The duties and responsibilities of the ER with respect to EM&A are:
● Monitor the Contractors’ compliance with contract specifications, including the implementation and operation of the environmental mitigation measures and their effectiveness
● Monitor Contractor’s, ET’s and IEC’s compliance with the requirements in the Environmental Permit (EP) and EM&A Manual
● Facilitate ET’s implementation of the EM&A programme
● Participate in joint site inspection by the ET and IEC
● Oversee the implementation of the agreed Event / Action Plan in the event of any exceedance
● Adhere to the procedures for carrying out complaint investigation
● Liaison with the related government departments, ET, IEC, the Contractor and the other
● Contractors of the Project discussing regarding the cumulative impact issues.
The Contractor
The duties and responsibilities of the Contractor are:
● Comply with the relevant contract conditions and specifications on environmental protection
● Employ an Environmental Team (ET) to undertake monitoring, and reporting of EM&A Facilitate ET’s monitoring and site inspection activities
● Participate in the site inspections by the ET and IEC, and undertake any corrective actions
● Provide information / advice to the ET regarding works programme and activities which may contribute to the generation of adverse environmental impacts
● Submit proposals on mitigation measures in case of exceedances of Action and Limit levels in accordance with the Event / Action Plans
● Implement measures to reduce impact where Action and Limit levels are exceeded
● Adhere to the procedures for carrying out complaint investigation
Environmental Team (ET)
The ET should be employed by the Contractor to conduct the EM&A programme. The ET should be managed by the ET Leader. ET Leader should have relevant professional qualifications in environmental control and possess at least 7 years’ experience in EM&A. Suitably qualified professional and technical staff should be included in the ET, and resources for the implementation of the EM&A programme should be allocated in the time under the Contract, to enable fulfilment of the Project’s EM&A requirements as specified in the EM&A Manual during construction of the Project. The ET shall include qualified botanist/ecologist for the ecological service and a Registered Landscape Architect for review of implementation of landscape and visual mitigation measures. The ET should report to the OPC and the duties should include:
● to monitor and audit various environmental parameters as required in the Approved EM&A Manual;
● to analyze the EM&A data, review the success of EM&A programme and the adequacy of mitigation measures implemented, confirm the validity of the EIA predictions and identify any adverse environmental impacts arising;
● to monitor compliance with conditions in the EP, environmental protection, pollution prevention and control regulations and contract specifications;
● to audit environmental conditions on site;
● to report on the EM&A results to EPD, the ER, the IEC and Contractor or their delegated representatives;
● to recommend suitable mitigation measures to the Contractor in the case of exceedance of Action and Limit levels in accordance with the Event and Action Plans;
● to liaise with the IEC on all environmental performance matters, and ensure timely submission of all relevant EM&A pro forma for IEC’s approval;
● to provide advice to the Contractor on environmental improvement, awareness and enhancement matters etc. on site;
● to adhere to the procedures for carrying out complaint investigation;
● to prepare reports on the environmental monitoring data and the site
environmental
conditions;
● to submit the EM&A report to Director of Environmental Protection (DEP) timely;
● to review proposals of mitigation measures from the Contractor in case of exceedance of Action and Limit levels, in accordance with the Event and Action Plan; and
● to carry out site inspection to investigate and audit the Contractor’s site practice, equipment and work methodologies with respect to pollution control and mitigation measures.
Independent Environmental Checker (IEC)
● The IEC is empowered to audit the environmental performance of
construction, but is independent from the management of construction works. As
such, the IEC should not be in any way an associated body of the Contractor or
the ET for the Project. The IEC should be
employed by OPC prior to the commencement of the construction of the Project.
The IEC
should be a person who has relevant professional qualifications in
environmental control and at least 7 years’ experience in EM&A and
environmental management. The duties and
responsibilities of the IEC are:
● to provide proactive advice to the ER and OPC on EM&A matters related to the project;
● to review and verify the monitoring data and all submissions in connection with the EP and EM&A Manual submitted by the ET;
● to arrange and conduct regular, at least monthly site inspections of
the works during the construction phase, and to carry out ad hoc inspections if
significant environmental problems
are identified;
● to check compliance with the agreed Event and Action Plan in the event of any exceedance;
● to check compliance with the procedures for carrying out complaint investigation;
● to check the effectiveness of corrective measures;
● to feedback audit results to the ET by signing off relevant EM&A pro forma;
● to check that mitigation measures are effectively implemented;
● to report the works conducted, and the findings, recommendations and improvements of the site inspections, after reviewing ET’s and Contractor’s works, the ER and OPC on a monthly basis;
● to verify the investigation result of the environmental complaint cases and the effectiveness of corrective measures;
● to verify EM&A report that has been certified by ET leader; and
● to audit EIA recommendations and requirements against the status of implementation of environmental mitigation measures on site.
During the Reporting Period, works of the Project undertaken include:
● Site formation for ride footing construction
● Cut soil slope and soil nail installation for Ride P1, P2, P3, P4 and P5
● Rock breaking and slope stabilization works for Ride P1 to P5
● Construction of drainage channels to slopes
● Mini pile construction
● Utilities diversion at A4
● Drainage works at PJD office and A4
● Backfilling at South Plant Room
● Construction of ride footings
● Main Building: Column and wall construction, L3 column to Roof construction, Steel Platform for Shell A construction, B1 water tank, drainage and on grade slab. Block works and ABWF in B1, L1 and L2 Secondary structure construction; area Pool B, C, D; Roof construction. L2 on grade slab construction, L3 Slab B1-2, L3 A4-2
● South Transformer Room: ABWF
● North Plant Room: Removal of falsework, waterproofing for double slab and ABWF
● Spiral Ramp: Falsework for the RC construction
● External Area: Laying of underground utilities
● South Plant Room – Assembly of Chimney
Summaries of validity permits, licenses, and/or notifications on environmental protection for the Project are presented in Table 1.
Table 1: Status of Environmental Licenses and Permits of the Project
|
Type of Permit/ License |
Submission Date |
Reference/ License No. |
Date of Issue
|
Date of Expiry |
Status |
|
Environmental Permit |
/ |
EP-487/2014/A |
10-Jan-18 |
N/A |
Valid |
|
Variation of Environmental Permit |
18-Dec-17 |
Application No. |
10-Jan-18 |
N/A |
Valid |
|
Environmental Permit |
/ |
EP-487/2014 |
27-Aug-14 |
N/A |
Superseded |
|
Notification pursuant to Air Pollution Control (Construction Dust) Regulation |
15-Mar-17 |
414651 |
N/A |
N/A |
Valid |
|
Application for a Billing Account for Disposal of Construction Waste |
14-Dec-16 |
Account No. 7026786 |
28-Dec-16 |
N/A |
Valid |
|
Discharge Licence under WPCO |
15-Mar-17 |
414650 |
29-May-17 |
31-May-22
|
Valid |
|
Registration as a Chemical Waste Producer |
21-Apr-17 |
415966 |
31-May-17 |
N/A |
Completed |
|
Construction Noise Permit under NCO |
26-Apr-17 |
416080 |
15-May-17 |
29-Dec-17 |
Superseded |
|
Construction Noise Permit under NCO GW-RS0825-17 |
8-Sep-17 |
420985 |
22-Sep-17 |
21-Mar-18 |
Superseded |
|
Renew Construction Noise Permit under NCO GW-RS1024-17 |
3-Nov-17 |
422922 |
21-Nov-17 |
16-May-18 |
Expired |
|
Renew Construction Noise Permit under NCO GW-RS0356-18 |
16-Apr-18 |
432628 |
30-Apr-18 |
16-Nov-18 |
Superseded by GW-RS0469-18 |
|
Renew Construction Noise Permit under NCO GW-RS0469-18 |
18-May-18 |
433713 |
04-Jun-18 |
30-Nov-18 |
Valid |
According to the EP stipulation, the required documents have been submitted to EPD for retention as listed below:
● Project Layout Plans
● Management Organization of Main Construction Companies
● Detailed Vegetation Survey Report
● Woodland Compensation Plan
● Ardeid Inspection Report
● Short-nosed Fruit Bat Inspection Report
● Baseline Monitoring Report Revision A of the Project
As specified in the approved EM&A Manual, environmental monitoring of construction noise, ecology, landscape and visual impacts as well as waste management are required. A summary of the monitoring parameters is presented in Table 2.
Table 2: Summary of Impact EM&A Requirements
|
Parameters |
Description |
Locations |
Frequency |
|
Construction Noise |
● Leq (30min) on normal working days ● 3 sets of consecutive Leq(5min) during restricted hours if construction is necessary ● Supplementary information for data auditing, statistical results such as L10 and L90 shall also be obtained for reference |
NM1A and NM2 |
Weekly Normal working days: (07:00-19:00 except public holiday)
Restricted hours: 19:00 to 07:00 next day, and whole day of public holiday or Sunday only when construction is necessary |
|
Ecology |
● Monitoring of in-situ preservation of Platycodon grandifloras ● Inspection of ardeids nest during breeding season (April to July) ● Monitoring for ardeid night roost (November to March) |
Project area and preservation area for Platycodon grandifloras |
Once per month |
|
● Inspection of enhancement area for ardeid roosting |
An enhancement area provided as an alternative roosting site for ardeids should be developed during the first phase of the construction. |
||
|
● Monitoring on woodland compensation |
Mitigation measures recommended in the approved Woodland Compensation Plan should be fully and properly implemented, including but not limited to the creation of 0.84 ha woodland compensation on-site and 0.78 ha on-site woodland reinstatement, to mitigate for permanent loss of woodland habitat. |
||
|
Landscape & Visual Impact |
● Ensure no construction activities / storage are undertaken outside the project boundary ● Ensure landscaping works are carried out in accordance with the specifications ● Ensure new planting is carried out properly and during the right season ● Review progress of engineering works on site to identify the earliest practical opportunities for landscape works
|
Project site |
Bi-weekly |
|
Regular Site Inspection
|
To review the environmental situation, and monitor the implementation of proper environmental protection and pollution control measures for the Project |
Project site |
Weekly |
Two designated noise monitoring locations as established in the EM&A Manual are shown in Appendix C. After the baseline monitoring, alternative location NM1A was proposed by MMHK due to the rejection of the monitoring location set up at NM1. The proposal was verified and agreed by EPD in the Baseline Monitoring Report. The construction noise monitoring locations for the Project are shown in Table 3 and Appendix D.
Table 3: Impact Monitoring Stations for Construction Noise
|
Monitoring location |
Descriptions |
Type of measurement |
|
NM1A |
Slope near Victoria Shanghai Academy (VSA) to replace NM1 of the VSA |
Free field |
|
NM2 |
Hong Kong Juvenile Care Centre (HKJCC) |
Facade |
The baseline results formed the basis for determining the environmental acceptance criteria for impact monitoring. According to the approved EM&A Manual and baseline monitoring results, the following construction noise criterion, namely Action and Limit levels listed in Table 4 were proposed:
Table 4: Action and Limit Levels for Construction Noise
|
Monitoring Location |
Action Level |
Limit Level in dB(A) |
|
Time Period: 0700-1900 hours on normal weekdays |
||
|
NM1A and NM2 |
When one or more documented complaints are received |
70 dB(A)* |
Note: Acceptable Noise Levels for school should be reduced to 65 dB(A) during examination period. If works are to be carried out during restricted hours, the conditions stipulated in the construction noise permit issued by the NCA must be followed.
Meteorological information including humidity, wind speed, wind direction, temperature and total rainfall was extracted from “the Hong Kong Observatory Wong Chuk Hang Station” to provide background weather information. The meteorological data for the Reporting Period is summarized in Appendix E.
Construction noise monitoring was conducted 26 times at the two designated locations in the Reporting Period. As shown in the summary of noise monitoring results in Table 5, no noise complaints were received in this Reporting Period and no exceedance of Action or Limit level in relation to construction noise was recorded.
Table 5: Summary of Construction Noise Monitoring Results (Noise level for 30 minutes)
|
Time |
Mean and range of noise levels, dB(A) |
Limit Level for Leq (dB(A))2 |
|||
|
Start |
Finish |
Leq (30min) |
Corrected Leq(30min)1 |
||
|
NM1A |
|
|
|
|
|
|
05-Jun-18 |
10:10 |
10:40 |
57.0 |
60.0 |
70 |
|
11-Jun-18 |
08:32 |
09:02 |
56.1 |
59.1 |
70 |
|
21-Jun-18 |
09:12 |
09:42 |
57.1 |
60.1 |
65 |
|
27-Jun-18 |
10:08 |
10:38 |
57.5 |
60.5 |
70 |
|
03-Jul-18 |
10:08 |
10:38 |
57.6 |
60.6 |
70 |
|
11-Jul-18 |
10:40 |
11:10 |
56.6 |
59.6 |
70 |
|
19-Jul-18 |
10:18 |
10:48 |
56.1 |
59.1 |
70 |
|
25-Jul-18 |
10:00 |
10:30 |
56.4 |
59.4 |
70 |
|
31-Jul-18 |
10:10 |
10:40 |
56.1 |
59.1 |
70 |
|
08-Aug-18 |
10:40 |
11:10 |
56.7 |
59.7 |
70 |
|
16-Aug-18 |
10:08 |
10:38 |
56.4 |
59.4 |
70 |
|
22-Aug-18 |
10:08 |
10:38 |
56.0 |
59.0 |
70 |
|
28-Aug-18 |
10:00 |
10:30 |
56.0 |
59.0 |
70 |
|
NM2 |
|
|
|
|
|
|
05-Jun-18 |
09:30 |
10:00 |
52.7 |
- |
70 |
|
11-Jun-18 |
10:10 |
10:40 |
51.6 |
- |
70 |
|
21-Jun-18 |
10:00 |
10:30 |
52.1 |
- |
65 |
|
27-Jun-18 |
09:30 |
10:00 |
54.5 |
- |
70 |
|
03-Jul-18 |
09:30 |
10:00 |
54.7 |
- |
70 |
|
11-Jul-18 |
10:00 |
10:30 |
53.1 |
- |
70 |
|
19-Jul-18 |
09:40 |
10:10 |
51.1 |
- |
70 |
|
25-Jul-18 |
14:30 |
15:00 |
51.0 |
- |
70 |
|
31-Jul-18 |
09:30 |
10:00 |
51.3 |
- |
70 |
|
08-Aug-18 |
10:00 |
10:30 |
51.3 |
- |
70 |
|
16-Aug-18 |
09:30 |
10:00 |
51.1 |
- |
70 |
|
22-Aug-18 |
09:30 |
10:00 |
50.5 |
- |
70 |
|
28-Aug-18 |
09:20 |
09:50 |
50.9 |
- |
70 |
Note: 1. A correction of +3 dB(A) was made to the free
field measurement at monitoring station NM1A.
2. Acceptable Noise Levels for school should be reduced to 65 dB(A) during examination
period.
As shown in Table 6, results of the additional noise monitoring measurement were below 70 dB(A). No exceedance (Action/Limit Level) of construction noise was thus recorded in this period.
Table 6: Summary of Construction Noise Monitoring Results (Noise level for 15 minutes)
Note: 1. A correction of +3dB(A)
was made to the free field measurement at monitoring station NM1A.
2. Technical memorandum on noise from construction work other than percussive
piling – Section 4 Table 2.
A summary of data and the supplementary data auditing information are shown in Appendix F. Graphical plots of the monitoring data are shown in Appendix G.
The ecological inspections were undertaken on 29 June, 20 July, 31 August 2018 by the qualified ecologist. The inspection findings are presented below.
Plants of Conservation Interest (Platycondon grandiflorus)
Platycodon grandiflorus is a perennial herb up to 120 cm high. Stems erect and scarcely any branches. It is often found on sunny grassy hillslopes in brushes. Two groups of Platycodon grandiflorus were recorded in 2015’s growing season within the fenced area.
On the other hand, the preventive mitigation measures, i.e., erecting of temporary protective fencing and sign post, were found to be effectively implemented for human disturbance, and there are no signs or evidence (e.g. dust coating of plant) to prove that the on-going construction activities within the project area has affected the health condition of the Platycodon grandiflorus.
Nesting Activities of Ardeids in Breeding Season
No signs or breeding (such as courtship, nest building, brooding, juveniles etc.) of ardeids were noted within the project area during June and July. No monitoring was conducted in August as this type of monitoring is only required during the breeding season of ardeids i.e. from April to July.
Roosting Activities of Ardeids in Peak Wintering Season
Compensation for Ardeid roosting Site
To be implemented.
Compensation of Woodland Habitat
To be implemented.
No sighting of ardeids or signs of any breeding/nesting activities were noted within the project area during the reporting period.
In the Reporting Period, bi-weekly landscape and visual site inspection were conducted on 15, 29 June, 6, 20 July and 3, 17 August 2018.
According to the bi-weekly site inspections, it was observed that the Contractor complied with the intended aims of the mitigation measures. For example, construction activities were not conducted and materials storage were not placed outside of the working site boundary. The Contractor was advised to improve and maintain the tree protection zone.
The quantity of waste for disposal in this Reporting Period is summarized in Table 7 and Table 8.
Table 7: Summary of Quantities of Inert C&D Materials
Table 8: Summary of Quantities of Non-inert C&D Materials
|
Type of Waste |
Quantity (tonne) |
|
|||
|
Recycled |
Recycled Paper / Cardboard Packing |
Recycled Plastic |
Disposed Chemical Wastes |
Disposed General Refuses |
|
|
June 2018 |
15620.00 |
315.00 |
0.00 |
0.00 |
223.85 |
|
July 2018 |
100.00 |
262.00 |
0.00 |
200.00 |
256.12 |
|
August 2018 |
0.00 |
546.00 |
0.00 |
0.00 |
262.69 |
|
Total |
15720.00 |
1123.00 |
0.00 |
200.00 |
742.66 |
In the Reporting Period, joint site inspections were undertaken by the PMR, ET and the Contractor on 1, 8, 15, 21 and 29 June, 6, 13, 20 and 27 July as well as 3, 10, 17, 24 and 31 August 2018. Furthermore, site inspection and audit were performed by the IEC on 15, 21 June, 13 July and 10 August 2018. During the site inspections, non-compliance was not observed by ET and IEC. The site observations for the Reporting Period is summarized in Table 9.
Table 9: Site Observations of the Project
|
Reporting Period |
Findings / Deficiencies |
|
June 2018 |
● Chemical containers observed without drip tray at level 1, zone A and B |
|
● Stagnant water observed near toilet area on 1/F, the contractor shall clear the stagnant water properly. |
|
|
● Water accumulated in drip tray under the generator at the EVA should be cleared. |
|
|
● To prevent surface runoff, the contractor shall enhance mitigation measures at the edge of works area. |
|
|
● Site tidiness (especially muddy water) should be enhanced in Hall 3, TC 4, LM 1 |
|
|
July 2018 |
● Accumulated water and debris were found in Area B, L2. Site tidiness should be enhanced to maintain better environment. |
|
● Debris should be cleared to maintain good hygiene at zone B |
|
|
● Appropriate Non-Road Mobile Machinery (NRMM) label should be provided on excavator (B1-10E4). |
|
|
August 2018 |
● Muddy water was observed on hillside slope. The contractor was reminded to prevent muddy water discharge into adjacent water body. |
|
● Sedimentation tank near site entrance should be well maintained to prevent any untreated water leakage outside project area. |
|
|
● Water pump should be well maintained to prevent over-flow of muddy water. |
|
|
● Storage over 20 cement bags should be covered or enclosed in an area sheltered on the top and the 3 sides. |
No exceedances of Action level or Limit levels were observed for construction noise during the Reporting Period.
No environmental complaints were received during the reporting period.
The environmental mitigation measures that were recommended in the Implementation Schedule for Environmental Mitigation Measures in the approved EM&A Manual covered the issues of dust, noise, water and waste and are presented in Appendix H.
Environmental mitigation measures generally implemented by the contractor are listed in Table 10.
Table 10: Environmental Mitigation Measures
|
Issues |
Environmental Mitigation Measures |
|
Construction |
● Construction equipment is shut down when not in use |
|
Ecology |
● Wire fencing was provided for temporary protection of the identified flora species of conservation concern ● Site inspection of the flora species of conservation and the Ardeid breeding and nesting activities was undertaken |
|
Landscape & Visual |
● Good site management |
|
Air Quality |
● Good site management to reduce air quality impact ● Main temporary access road paved with concrete ● Prior to any loading or transfer operation, all dusty materials were sprayed with water to keep them wet ● All debris had been covered entirely by impervious sheeting ● Before debris was dumped into a chute, water was sprayed onto the debris to make them wet ● Vehicles were covered with tarpaulin during transport of dusty materials ● When vehicles were leaving the construction site, any vehicles loaded with dusty materials were covered with clean impervious sheeting to prevent fugitive dusty material emission ● The speed of the trucks passing site areas was controlled to below 10 km/hour ● Water spraying was provided for soil-nailing work |
|
Water Quality |
● Portable chemical toilets were provided on site ● A licensed collector has been employed to collect effluent and off-site dispose. |
|
Waste and Chemical Management |
● A temporary container located far away from sea shore and drainage channel was provided for chemical materials and waste storage ● Drip tray was provided for chemical materials at the working areas ● Waste skip was provided for general refuse disposal |
|
General |
● The site was generally kept tidy and clean |
The EM&A programme as recommended in the EM&A manual has been undertaken in the Reporting Period.
Monitoring of construction noise, ecology, landscape and visual, as well as waste management for the Project were conducted as scheduled in the Reporting Period. Data collected during construction noise monitoring were checked against the established Action and Limit levels and no exceedances were recorded.
For ecological monitoring, the implementation of the mitigation measures for the plant species of conservation interest, i.e., erecting of temporary protective fencing and sign post during the Reporting Period was noted. The two groups of Platycodon grandiflorus within the fenced area were found to be vigorous and all new branches were in healthy condition.
Roosting activities of ardeids were not observed within the project area during the monitoring.
For landscape and visual monitoring, the Contractor was advised to carry out regular weeding in the tree protection zone.
With considerations on the construction activities and environment, the following reminders and recommendations were provided:
● All drainage facilities, erosion and sedimentation control structures (including the sedimentation tanks installed on site) should be regularly inspected and maintained in good condition, especially during the wet season.
● Appropriate label should be provided in specific machine.
● Noise mitigation measures, including the use of quiet plants, should be implemented in accordance with the EM&A requirement.
● Cleanliness and tidiness in construction site should be enhanced.