A |
Sep 2017 |
Various |
Gary Chow |
Eric Ching |
1st Draft to client and IEC |
B |
Oct 2017 |
Various |
Gary Chow |
Eric Ching |
2nd Draft to client and IEC |
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This document is issued for the party which commissioned it and for specific purposes connected with the above-captioned project only. It should not be relied upon by any other party or used for any other purpose. We accept no responsibility for the consequences of this document being relied upon by any other party, or being used for any other purpose, or containing any error or omission which is due to an error or omission in data supplied to us by other parties. This document contains confidential information and proprietary intellectual property. It should not be shown to other parties without consent from us and from the party which commissioned it. |
This report has been prepared solely for use by the party which commissioned it (the ‘Client’) in connection with the captioned project. It should not be used for any other purpose. No person other than the Client or any party who has expressly agreed terms of reliance with us (the ‘Recipient(s)’) may rely on the content, information or any views expressed in the report. We accept no duty of care, responsibility or liability to any other recipient of this document. This report is confidential and contains proprietary intellectual property. No representation, warranty or undertaking, express or implied, is made and no responsibility or liability is accepted by us to any party other than the Client or any Recipient(s), as to the accuracy or completeness of the information contained in this report. For the avoidance of doubt this report does not in any way purport to include any legal, insurance or financial advice or opinion. We disclaim all and any liability whether arising in tort or contract or otherwise which it might otherwise have to any party other than the Client or the Recipient(s), in respect of this report, or any information attributed to it. We accept no responsibility for any error or omission in the report which is due to an error or omission in data, information or statements supplied to us by other parties including the client (‘Data’). We have not independently verified such Data and have assumed it to be accurate, complete, reliable and current as of the date of such information. Forecasts presented in this document were prepared using Data and the report is dependent or based on Data. Inevitably, some of the assumptions used to develop the forecasts will not be realised and unanticipated events and circumstances may occur. Consequently Mott MacDonald does not guarantee or warrant the conclusions contained in the report as there are likely to be differences between the forecasts and the actual results and those differences may be material. While we consider that the information and opinions given in this report are sound all parties must rely on their own skill and judgement when making use of it. Under no circumstances may this report or any extract or summary thereof be used in connection with any public or private securities offering including any related memorandum or prospectus for any securities offering or stock exchange listing or announcement. |
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 1st 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 to 31 August 2017.
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 |
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 |
12 |
Independent Environmental Checker (IEC) joint site inspection and auditing |
3 |
Breaches of Action/Limit Levels
No noise complaints (i.e. Action level) were received in the reporting period. 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:
● Potential fugitive dust impact due to the dry/loose/exposed soil surface/dusty material;
● Potential water quality impact due to surface runoff especially on the hillside;
● Implementation of dust suppression measures;
● Ensure proper implementation of noise and dust mitigation measures;
● Regular maintenance of sediment catch-pits and silt removal facilities;
● Site effluent discharge shall fulfill the discharge license requirements;
● Proper management of chemical waste;
● Follow-up of improvement on general waste management issues; and
● Implementation of construction noise preventative control measures.
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 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 2017 to 31 August 2017.
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, laboratory analysis 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 analyse 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:
● Set up of site office
● Site formation for haul road construction
● Foundation construction for tower crane erection
● Rock breaking and slope stabilization works for Ride P3 and P5
● Construction of drainage channels to slopes
● Column and slab construction at Level 1 of primary RC structure
● Cut soil slope and soil nail installation for Ride P1, P2, P3, P4 and P5
● Footing excavation for Plant room
● Bearing wall and Core wall construction
● Coring wall work
● Footing and underground utility construction for South Services Building
● Footing construction for primary RC structure at zone 01/03/04/05/06
● Scaffolding erection for A1 / B1 working area
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 |
27-Aug-14 |
N/A |
Valid |
Notification pursant 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 |
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 was extracted from “the Hong Kong Observatory Wong Chuk Hang Station” to provide the humidity, wind speed, wind direction, temperature and total rainfall as 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. A summary of the noise monitoring results are shown in Table 5. As shown in Table 5, in addition that no noise complaints were received in this reporting period, no exceedance of Action or Limit level in relation to construction noise was recorded.
Table 5: Summary of Construction Noise Monitoring Results
Monitoring Date |
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 |
|
|
|
|
|
07-Jun-17 |
15:55 |
16:25 |
59.0 |
62.0 |
70 |
14-Jun-17 |
13:45 |
14:15 |
59.8 |
62.8 |
70 |
22-Jun-17 |
10:40 |
11:10 |
58.1 |
61.1 |
70 |
28-Jun-17 |
10:17 |
10:47 |
58.8 |
61.8 |
70 |
05-Jul-17 |
11:25 |
11:55 |
59.1 |
62.1 |
70 |
12-Jul-17 |
09:50 |
10:20 |
58.5 |
61.5 |
70 |
19-Jul-17 |
09:50 |
10:20 |
57.9 |
60.9 |
70 |
27-Jul-17 |
09:30 |
10:00 |
58.2 |
61.2 |
70 |
02-Aug-17 |
11:00 |
11:30 |
58.8 |
61.8 |
70 |
09-Aug-17 |
10:45 |
11:15 |
56.5 |
59.5 |
70 |
16-Aug-17 |
13:55 |
14:25 |
56.5 |
59.5 |
70 |
22-Aug-17 |
09:38 |
10:08 |
59.1 |
62.1 |
70 |
30-Aug-17 |
10:50 |
11:20 |
58.2 |
61.2 |
70 |
NM2 |
|
|
|
|
|
07-Jun-17 |
15:55 |
16:25 |
54.6 |
- |
70 |
14-Jun-17 |
13:03 |
13:33 |
54.9 |
- |
652 |
22-Jun-17 |
10:00 |
10:30 |
54.6 |
- |
70 |
28-Jun-17 |
09:30 |
10:00 |
55.5 |
- |
70 |
05-Jul-17 |
10:40 |
11:10 |
52.0 |
- |
70 |
12-Jul-17 |
09:00 |
09:32 |
54.6 |
- |
70 |
19-Jul-17 |
09:00 |
09:30 |
53.8 |
- |
70 |
27-Jul-17 |
08:44 |
09:14 |
52.3 |
- |
70 |
02-Aug-17 |
10:10 |
10:40 |
53.0 |
- |
70 |
09-Aug-17 |
10:00 |
10:30 |
50.4 |
- |
70 |
16-Aug-17 |
13:03 |
13:33 |
56.9 |
- |
70 |
22-Aug-17 |
09:00 |
09:30 |
53.5 |
- |
70 |
30-Aug-17 |
10:02 |
10:32 |
54.5 |
- |
70 |
Note: 1. A correction of +3dB(A)
was made to the free field measurement at monitoring station NM1A.
2. Limit level of the construction noise monitoring for school was reduced to
65 dB(A) during examination period at HKJCC on 14th June to 20th
June.
In this reporting period, an examination was undertaken at the Hong Kong Juvenile Care Centre Chan Nam Cheong Memorial School from 14th June to 20th June, the Limit level of construction noise monitoring at NM2 was therefore reduced to 65 dB(A).
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 14 June, 21 July and 25 August 2017 by the qualified ecologist. The inspection findings are presented below.
Plants of Conservation Interest (Platycondon grandiflorus)
During the reporting period, the preventive measures, i.e erection of temporary protective fencing and sign post, were effectively implemented. No evidence suggested that the on-going construction activities within the Project Area had affected the health of Platycondon grandifloras.
However, the whole plant was observed prostrated on the ground after the severe typhoon HATO battered Hong Kong on 23 August 2017. The Hong Kong Observatory issued typhoon signal no.10 and sea level had risen above normal chart datum. It was expected that the strong wind from the typhoon and high sea water level caused adverse impact to Platycodon grandiflorus as they have low salt tolerance.
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
In accordance with the approved EM&A Manual, this monitoring parameter would not be required beyond the Peak Wintering season, i.e., from 1st November to 31st March.
Compensation for Ardeid roosting Site
To be implemented.
Compensation of Woodland Habitat
To be implemented.
The implementation of the mitigation measures for the plant species of conservation interest during the reporting period provided effective protection against the construction activities in the Project Area. As aforementioned, the two groups of Platycodon grandiflorus within the fenced area were found prostrated on the ground due to severe typhoon HATO which battered Hong Kong on 23 August 2017. 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 9, 23 June, 14, 28 July and 11, 25 August 2017.
According to the bi-weekly site inspections, it was observed that the Contractor complied with the intended aims of the mitigation measures, for example, no construction activities were conducted or materials storage were placed outside of the working site boundary. The Contractor was advised to improve and maintain the tree protection zone.
The yellowing of green leaves (chlorosis) were observed on some trees including A0090 and A0091 on 25 August 2017. Moreover, large amount of drooping leaves with sparse foliage were also observed (as shown in Table 6). A loose wire was also observed.
Table 6: Photo record of trees A0090 and A0091
Tree no. |
|
|
A0090 |
|
|
|
Photo taken on 11 August 2017 |
Photo taken on 25 August 2017 |
A0091 |
|
|
|
Photo taken on 11 August 2017 |
Photo taken on 25 August 2017 |
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
Type of Waste |
Quantity (tonne) |
|
|||
1 to 30 June 2017 |
1 to 31 July 2017 |
1 to 31 August 2017 |
Total |
Disposal Location |
|
C&D Materials (Inert) |
4917.45 |
7447.78 |
4168.41 |
16533.64 |
|
Reused in this Contract (Inert) |
1700.00 |
840.00 |
1600.00 |
4140.00 |
|
Disposal as Public Fill |
3217.45 |
6607.78 |
2568.41 |
12393.64 |
Chai Wan Barging Point (CW-PFBP) and TKO137 |
Table 8: Summary of Quantities of Non-inert C&D Materials
Type of Waste |
Quantity (tonne) |
|||
1 to 30 June 2017 |
1 to 31 July 2017 |
1 to 31 August 2017 |
Total |
|
Recycled Metal |
0.00 |
0.00 |
0.00 |
0.00 |
Recycled Paper / Cardboard Packing |
210.00 |
210.00 |
336.00 |
756.00 |
Recycled Plastic |
0.00 |
0.00 |
0.00 |
0.00 |
Chemical Wastes |
0.00 |
0.00 |
0.00 |
0.00 |
General Refuses |
60.93 |
45.82 |
52.86 |
159.61 |
In the reporting period, joint site inspections were undertaken by the PMR, ET and the Contractor on 9, 14, 23 and 30 June 2017, and 7, 14, 21 and 28 July 2017 as well as 4, 11, 18 and 25 August 2017. Furthermore, IEC performed the site inspection and audit on 14 June, 14 July and 11 August 2017. During site inspection, non-compliance was not observed by ET and IEC. The site observations for reporting period is summarized in Table 9.
Table 9: Site Observations of the Project
Reporting period |
Findings / Deficiencies |
1 to 30 June 2017 |
● No water spraying is observed when operating breaking operation. |
● Sand / Silt removal facilities have only arrived on site on the day of inspection, while they will be set up in coming weeks. |
|
● Car washing facility should be provided to avoid dust dispersion |
|
● Drip tray should be provided for the chemical container to avoid potential leakage. |
|
● Increase water spraying frequency at the haul road is recommended. |
|
● Stockpile should be well covered when not in use. |
|
1 to 31 July 2017 |
● No water spraying was observed during breaking operation. |
● Stagnant water should be cleared to avoid mosquito breeding. |
|
● No water spraying was observed during breaking operation. |
|
● General waste should be separated from recycle material. |
|
● Muddy water was observed at the outfall. |
|
● Water spraying should be carried out during drilling operation. |
|
1 to 31 August 2017 |
● Water accumulated in drip tray under electric generator should be cleared. |
● Sand accumulated in drip tray under electric generator should be cleared. |
|
● Chemical container observed without drip tray. |
|
● Mixed waste should be separated to general waste and non-inert C&D material. |
|
● Leakage oil at the top of container should be cleared. |
|
● Trip tray should be provided for the chemical containers |
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 is provided for temporary protection of the identified flora species of conservation concern ● Site inspection undertaken for the flora species of conservation and the Ardeid breeding and nesting activities |
Landscape & Visual |
● Good site management |
Air Quality |
● Good site management to reduce air quality impact ● Main temporary access road is paved with concrete ● Prior to any loading or transfer operation, all dusty materials have been sprayed with water to keep it wet ● Debris is covered by impervious sheeting ● Debris is sprayed with water before being dumped into a chute to keep it wet ● Vehicles transporting dusty materials are covered with tarpaulin ● When vehicles leaving the construction site, any vehicles loaded dusty materials covered with clean impervious sheeting as prevent fugitive dusty materials emission ● The speed of the trucks passing site areas was controlled to below 10 km/hour ● Water spraying has been provided for soil-nailing work |
Water Quality |
● Portable chemical toilets have been provided on site ● A licensed collector has been employed to collect effluent and off-site disposal. |
Waste and Chemical Management |
● A temporary container located far away from seashore and drainage channel has been provided for chemical materials and waste storage ● Drip tray is provided for chemical materials which use on the working areas ● A waste skip has been 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 two groups of Platycodon grandifloras were proven to be effective against construction activities in the project area. The two groups were observed prostrated on the ground due the severe typhoon on 23 August 2017. It was suspected that the two groups of Platycodon grandifloras were affected by the strong winds and high seawater level. No sighting of ardeids or signs of any breeding/nesting activities were noted within the project area.
For landscape and visual monitoring, yellowing of green leaves (chlorosis) were observed on some trees including A0090 and A0091 on 25 August 2017. A loose wire was also observed.
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.
● Noise mitigation measures, including the use of quiet plants, should be implemented in accordance with the EM&A requirement.
● Close monitoring of Platycodon grandifloras will be necessary to track their condition.
● Wires that keep the trees in place in the temporary nursery should be tightened
● Sandbags should be placed next to exposed soil near the stream channel to prevent surface runoff