|
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 25th monthly EM&A report for the
construction phase of Waterpark Main Building Works submitted under Condition
3.4 of the Environmental Permit (No. EP-487/2014/A). This report summarises the
findings on EM&A during the period from 1 to 30 June 2019.
Exceedance of Action and Limit Levels
The summary of measured noise level (as Leq) is presented in Section
3. No exceedance of Action or Limit Levels for noise levels were recorded
in the Reporting Period.
Result of Ecological Monitoring
The plant species of conservation interest – One number of Platycodon grandifloras was found in fence up
area in the Reporting Period. Group 1 of Platycodon
grandifloras could not be found within the fenced area due to natural life
cycle of this perennial herbaceous species, and new shoots would be expected to
emerge from the underground part in the next growing season. No sign of
construction activities was noted in the fence up area.
No ardeids were noted within or in the vicinity of the
project area during the monitoring period.
Details of the results are presented in Section 4.
Result of Landscape and Visual Monitoring
No non-compliance of Landscape and Visual monitoring was
recorded in the Reporting Period. Details of the results are presented in Section
5.
Record of Complaints
There was no record of complaints received in the Reporting
Period.
Record of Notification of Summons and Successful
Prosecutions
There were no record of notification of summons and
successful prosecution in the Reporting Period.
Reporting Changes
There are no reporting changes.
Site inspection
In the Reporting Period, joint
site inspections were undertaken by the PMR, ET and the Contractor on 6, 14, 21
and 28 June 2019. Furthermore, joint site inspection and audit were undertaken
by the PMR, ET, the Contractor and IEC on 14 June 2019. During site inspection,
non-compliance was not observed by the ET and IEC.
Future Key Issues
● Site formation for ride footing &
column construction
● Cut soil slope and soil nail
installation for Ride P1 and P3
● Rock breaking and slope stabilization
works for Ride P1 to P5
● Utilities diversion at A4
● Drainage works at A4
● Rising Main construction (PJD &
slope portions)
● Footing and column construction at P3
● Backfilling for ride footing
● Main Building: B1 water tank, drainage
and on grade slab. ABWF in B1, L1, L2 and L3 Secondary structure
construction; L2M E&M works; L2 Block work and ABWF works, area Pool B, C,
D, E, F, H, R filtration pipe works installation and pool structure construction;
Indoor Wave Pool construction, Outdoor Wave Pool A ABWF works, Roof ABWF &
Landscape works (Green Roof, Curtain Wall, ETFE), Lift installation works &
ABWF, L2 On-grade Slab (rebar fixing and concreting of on-grade slab etc.), L2
North Cladding Wall construction, core 3 staircase, lift shat installation
works and ABWF works
● South Transformer Room: ABWF
● South Plant Room: E&M
● External Area: Laying of underground
utilities, removal of concrete paving, manholes and watermain construction,
trench exaction for cables & pipes, backfilling
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 Project location 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 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, 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 is 25th monthly EM&A report presenting the
monitoring results and inspection findings for the Project during the Reporting
Period from 1 to 30 June 2019.
The project organization is shown in Appendix B. The
responsibilities of respective parties are:
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 Contractors’, 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 seven 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 seven 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 the ET leader; and
● to audit EIA recommendations and requirements against the status of
implementation of environmental mitigation measures on site.
The construction program is enclosed in Appendix C.
In the Reporting Period, the major construction activity conducted under the
Contract is summarized below:
● Site formation for ride footing &
column construction
● Cut soil slope and soil nail
installation for Ride P1 and P3
● Rock breaking and slope stabilization
works for Ride P1 to P5
● Utilities diversion at A4
● Drainage works at A4
● Rising Main construction (PJD &
slope portions)
● Footing and column construction at P3
● Backfilling for ride footing
● Main Building: B1 water
tank, drainage and on grade slab. ABWF in B1, L1, L2 and L3
Secondary structure construction; L2M E&M works; L2 Block work and ABWF
works, area Pool B, C, D, E, F, H, R filtration pipe works installation and
pool structure construction; Indoor Wave Pool construction, Outdoor Wave Pool A
ABWF works, Roof ABWF & Landscape works (Green Roof, Curtain Wall, ETFE),
Lift installation works & ABWF, L2 On-grade Slab (rebar fixing and
concreting of on-grade slab etc.), L2 North Cladding Wall construction, core 3
staircase, lift shat installation works and ABWF works
● South Transformer Room: ABWF
● South Plant Room :
E&M
● External Area: Laying of underground utilities,
removal of concrete paving, manholes and watermain construction, trench
exaction for cables & pipes, backfilling
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
In accordance with the EP stipulation, the
required documents submitted to EPD for retention are 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
Construction noise is one of the key environmental issues
during the construction phase of the Project in accordance to the approved
EM&A Manual. Following the requirements in the EM&A Manual, continuous
noise monitoring for A-weighted levels Leq,
L10, L90 shall be undertaken once per week during the
construction phase. Measurement of Leq(30min)
between 07:00-19:00 hours on normal weekdays.
If construction works are necessary to be carried out at
other time periods, i.e. restricted time period (19:00-07:00 the next morning
and whole day on public holidays) (hereinafter referred as “the restricted
hours”), three consecutive Leq(5min) measurements
shall be recorded, while complying specific conditions as stipulated on the
Construction Noise Permit (CNP). Supplementary information for data auditing
and statistical results such as L10 and L90 shall also be
obtained for reference. Summary of these monitoring requirements is shown in Table
2.
Table 2: Noise Monitoring
Parameters
Monitoring Station |
Parameters |
NM1A and NM2 |
● Leq(30min) on normal working days (Monday to Saturday) 07:00-19:00 except public holiday; ● 3 sets of consecutive Leq(5min) during restricted hours i.e. 19:00 to 07:00 next day, and whole day of public holiday or Sunday when applicable, and ● Supplementary information for data auditing and statistical results such as L10 and L90 shall also be obtained for reference |
The baseline results form the basis
for determining the environmental acceptance criteria for the impact
monitoring. According to the approved EM&A Manual with baseline monitoring
results, construction noise criterion, namely Action and Limit levels proposed
are listed in Table 3.
Table 3: Action and Limit
Levels for Construction Noise
Monitoring Location |
Action Level |
Limit Level in dB(A) |
NM1A and NM2 |
When one or more documented complaints are received |
70 dB(A)1,2 |
Note: 1. Acceptable noise
levels for school should be reduced to 65 dB(A) during examination period
2. If works are to be carried out during restricted hours, the conditions
stipulated in the CNP must be followed.
Two designated noise monitoring locations as established in
the EM&A Manual is shown in Appendix D.
After the baseline monitoring, alternative location NM1A has been proposed by
MMHK due to 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 4 and Appendix
E.
Table 4: Impact Monitoring
locations
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 |
Integrating sound level meter in compliance with the
International Electrotechnical Commission Publications 651: 1979 (Type 1) and
804: 1985 (Type 1) specifications shall be used for carrying out the noise
monitoring. The sound level meter shall be checked using an acoustic
calibrator. The wind speed shall be checked with a portable wind speed meter
capable of measuring the wind speed in ms-1. The acoustic calibrator
and sound level meter to be used in the impact monitoring will be calibrated
yearly.
Noise monitoring equipment used for monitoring is listed in Table
5.
Table 5: Noise Monitoring
Equipment
Equipment |
Model |
Integrating Sound Level Meter |
Rion NL-52 |
Calibrator |
Larson Davis CAL200 |
Portable Wind Speed Indicator |
Anemometer/ Lutron AM-4201 |
Field Monitoring
● Sound Level Meter was set up on a
tripod at a height of at least 1.2 m above ground.
● Noise measurements were taken in terms
of the A-weighted equivalent sound pressure level (Leq)
measured in decibels (dB). Supplementary statistical results (L10
and L90) were also obtained for reference.
● Free field measurement was made at
NM1A while facade measurement was made at NM2.
● The battery condition was checked to
ensure the correct functioning of the meter.
● Prior to and after each noise
measurement, the meter was calibrated using an acoustic calibrator for 94 dB at
1 kHz. The checking was performed before and after the noise measurement.
● During the monitoring, all noise
measurements would be performed with the meter with Fast time weighting and on
the A-weighted equivalent continuous sound pressure level (Leq).
Leq(30min) as the monitoring
parameter for the time period between 0700-1900 hours on weekdays; and also Leq(15min) in
three consecutive Leq(5min) measurements
would be used as monitoring parameter for other time periods (e.g. during
restricted hours), if necessary. In addition, any site observations and noise sources
were recorded on a standard record sheet.
● A correction of +3 dB(A) was made to
the free field measurement.
● Noise measurements were not made in
fog, rain, wind with a steady speed exceeding 5 ms-1 or wind with
gust exceeding 10 ms-1.
Equipment calibration
● The sound level meter and calibrator
are calibrated and certified by a HOKLAS accredited laboratory at yearly
intervals.
● Calibration records of sound level
meter and calibrator, together with the Anemometer used for impact monitoring
program in the Reporting Period are shown in Appendix F.
Meteorological Information
Meteorological
information was extracted from “the Hong Kong Observatory Wong Chuk Hang
Station” to provide the humidity, wind speed, wind direction and temperature
etc. as background weather information. The meteorological data throughout the
impact monitoring period is summarized in Appendix K.
Derivation of Action/Limit (A/L) Levels
According to the
approved EM&A Manual and baseline monitoring results, Action and Limit
levels criterion proposed for construction noise monitoring are listed in Table
6.
Table 6: Action and Limit
Levels for Construction Noise
Monitoring Location |
Action Level |
Limit Level in dB(A) |
|
Time Period: 07:00-19:00 hours on normal weekdays |
|
NM1A and NM2 |
When one or more documented complaints are received |
70 dB(A) 1, 2 |
Note: 1. A
correction of +3dB(A) was made to the free field measurement at monitoring
station NM1A.
2. No examination has taken place during this reporting period.
Should
non-compliance of the environmental quality criteria occur, remedial actions
will be
triggered according to the Event and Action Plan which is presented in Appendix G.
Data
Management and Data QA/QC Control
All
monitoring data will be handled by the ET’s in-house data recording and
management system. The monitoring data recorded in the equipment will be
downloaded directly from the equipment at the end of each monitoring day.
The downloaded monitoring data will be inputted into a computerized database
properly maintained by the ET.
Monitoring for noise levels due to construction work was
undertaken in compliance with the EM&A manual during the Reporting Period.
Regular monitoring surveys were carried out on 3, 13, 19 and 25 June 2019
during the Reporting Period. A total of 8 noise monitoring surveys were carried
out at the two noise monitoring locations.
As shown in Table 7, results of the noise monitoring
measurement were below 70 dB(A). No noise complaints were received in this
Reporting Period. No exceedance (Action/Limit Level) of construction noise was
recorded in this period.
Table 7: Summary of
Construction Noise Monitoring Results (Noise level for 30 minutes)
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 |
|
|
|
|
|
3-Jun-19 |
10:02 |
10:32 |
56.6 |
59.6 |
70 |
13-Jun-19 |
10:20 |
10:50 |
58.3 |
61.3 |
70 |
19-Jun-19 |
10:20 |
10:50 |
56.5 |
59.5 |
70 |
25-Jun-19 |
9:23 |
9:53 |
57.1 |
60.1 |
70 |
NM2 |
|
|
|||
3-Jun-19 |
9:20 |
9:50 |
52.9 |
- |
70 |
13-Jun-19 |
9:25 |
9:55 |
51.0 |
- |
70 |
19-Jun-19 |
9:30 |
10:00 |
51.8 |
- |
65 |
25-Jun-19 |
11:23 |
11:53 |
52.3 |
- |
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.
Summary of data and the supplementary information for data
auditing is presented in Appendix I. Graphical
plots of the monitoring data are as shown in Appendix
J.
As required under the Section 8.3.2 of the approved EM&A
Manual, the implementation of ecological mitigation measures as detailed in the
Section 15 of the EIA report and Appendix C of the approved EM&A Manual
shall be routinely audited during the routine environmental audit; and any
observations and recommendations shall be reported in periodic EM&A
reports.
Among those mitigation measures recommended to avoid or
minimize the disturbance to any plants of conservation interest (EM&A
reference 8.3.1.1), nested ardeids (EM&A reference 8.3.1.2) and roosted
short-nosed fruit bat (EM&A reference 8.3.1.3), the required inspection has
already been undertaken in August / September 2014 with the results presented
in the submitted respective baseline report. Therefore, the following
sections only address those applicable to this stage of the project, i.e.,
Section 8.3.2 of the approved EM&A Manual.
Monitoring
of Plants of Conservation Interest (Platycondon grandiflorus)
According to Condition 2.6 of Environmental Permit No.
EP-487/2014, the Detailed Vegetation Survey Report has located two groups of
the protected Platycodon grandiflorus and recommended that the plants should be
protected with temporary protective fencing to avoid potential impact from
construction activities (such as material storage), and monitor the identified Platycodon grandiflorus
on a monthly basis throughout the construction phase to ensure they are not
affected by the construction works of the Project. Accordingly, the following
monitoring parameters will be undertaken on a monthly basis during the
construction period:
● Effective implementation of the
protection measures as recommended in the Section 4.1 of the Detailed
Vegetation Survey Report
● Monitoring of the two groups of Platycodon grandiflorus
identified during the detailed vegetation survey to ensure they are not
affected by the construction works
Monitoring of Nesting Activities of Ardeids in
Breeding Season
The project
area should be checked monthly in breeding season (April to July) for any
potential breeding and nesting activities, and if required, suitably sized
buffer area will be recommended to avoid human or machinery disturbance until
the nest is abandoned.
Monitoring of Roosting Activities of Ardeids in Peak
Wintering Season
The existing ardeid night roost within the project area
should be monitored monthly during peak wintering season (November to March)
during the construction phase by direct observation from a vantage point (i.e.,
point count method) in the evening from an hour before sunset to nightfall.
Compensation for Ardeid roosting Site
An enhancement area proposed as an alternative roosting site
for ardeids should be developed during the first phase of the construction.
Compensation of Woodland Habitat
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.
The ecological inspection was undertaken on 14 June 2019 by
the qualified ecologist. The inspection findings are presented below.
Plants of Conservation Interest (Platycodon
grandiflorus)
Platycodon grandiflorus is a perennial herb up to 120 cm tall.
Stems erect with scarcely any branches. It is often found on sunny grassy
hillslopes in brushes. Two groups of Platycodon
grandiflorus (see Figure 1 of Appendix L
for the location) that were recorded in 2015’s growing season within the fenced
area.
It was observed that Group 2 of Platycodon
grandiflorus was found to be vigorous and was in
health condition. However, Group 1 of Platycodon
grandiflorus could not be found within the fenced
area due to natural life cycle of this perennial herbaceous species, and new
shoots would be expected to emerge from the underground part in the next
growing season.
The preventive mitigation measures, i.e., erecting of
temporary protective fencing and sign post, were found to be effectively
implemented for human disturbance (see
Photo 2 of Appendix
L of this report), and there is no signs or evidence (e.g. dust coating
of plant) to suggest that the on-going construction activities with 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
the reporting month.
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. The last
monitoring event for roosting activities of ardeids in Peak Wintering Season
2019’s was undertaken on 15 March 2019.
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,
i.e., erecting of temporary protective fencing and sign post during the
Reporting Period was noted. Group 2 of Platycodon
grandifloras was found to be vigorous and was in health condition but Group
1 of Platycodon grandifloras could not
be found within the fenced area due to natural life cycle of this perennial
herbaceous species, and new shoots would be expected to emerge from the
underground part in the next growing season.
On the other hand, no
sighting of ardeids or signs of any breeding/ nesting activities were noted
within the Project Area during the monitoring.
The tentative
ecological inspection and monitoring in the next Reporting Period is scheduled
on 12 July 2019.
Landscape and visual mitigation measures for the
construction phase are listed in the Approved EM&A Manual Table 9.1.
The design, implementation and maintenance of landscape and
visual mitigation measures shall be checked bi-weekly to ensure that they are
fully realized during the construction phase. The scope of the site audit
during construction shall include the following:
● The extent of the agreed works areas should
be regularly checked. No construction activities or storage shall be undertaken
outside the limit of the works;
● The progress of the engineering works
should be regularly reviewed on site to identify the earliest practical
opportunities for the landscape works to be undertaken;
● All landscaping works are carried out
in accordance with the specifications; and
● All new plantings are carried out
properly and during the right season.
Any potential conflicts between the proposed landscape and
visual mitigation measures and any other project works or operational
requirements shall be recorded for the Contractor to resolve in an early stage,
without compromising the intention of the mitigation measures.
In the Reporting Period, bi-weekly landscape and visual site
inspections were conducted on 14 and 28 June 2019.
According to the bi-weekly site inspections, it was observed
that the Contractor complied with the intended aims of the mitigation measures,
for example, neither construction activities nor materials storage conducted
and placed outside of the working site boundary.
Waste management was carried out by an on-site Environmental
Officer or an Environmental Supervisor from time to
time.
All types of waste arising from the construction work are
classified into the following:
● Construction & Demolition
(C&D) Material;
● Chemical Waste;
● General Refuse; and
● Excavated Soil.
Monthly Summary Waste
Flow Table provided by the Contractor is shown in Appendix M. Materials
were reused on-site as far as practicable.
According to the
approved EM&A Manual, the environmental site inspection shall be formulated
by the ET Leader. Weekly environmental site inspections should be carried out
to confirm the environmental performance.
In the Reporting Period, joint site inspections were
undertaken by the PMR, ET and the Contractor on 6, 14, 21 and 28 June 2019.
Furthermore, joint site inspection and audit were undertaken by the PMR, ET,
the Contractor and IEC on 14 June 2019.
During site inspections,
non-compliance was not observed by the ET and IEC. However, a total of
eight observations were recorded in the Reporting Period. The findings /
deficiencies of the Project observed during the weekly site inspections are listed
in Table 8.
Table 8: Summary of findings /
deficiencies
Date |
Findings / Deficiencies |
Follow-up Status |
6 June 2019 |
The Contractor was reminded to conduct cement mixing work in appropriate area. (Location: Level 2, Zone B) |
- |
6 June 2019 / 14 June 2019 |
The Contractor was reminded to provide proper drip tray for chemical container to avoid any leakage. (Location: Level 2, Zone B) |
The chemical containers were removed from the site. |
6 June 2019
|
The contractor was reminded to provide an enclosed shelter on the top and 3 sides for cement mixing work. (Location: Level 2, Zone A) |
The cement bags were removed off site. |
14 June 2019 |
The contractor was reminded to remove the standing water on site regularly. |
- |
21 June 2019 / 28 June 2019 |
Muddy water was observed being discharged to the public open sea. |
Mitigation measures for the construction runoff was provided to prevent muddy water being discharged to the public open sea. |
21 June 2019 |
The cements should be covered by impervious sheeting to avoid fugitive dust emission. (Location: Basement) |
Impervious sheeting was provided to avoid dust emission. |
28 June 2019 |
Standing water accumulated with algae was observed near the landscape nursery area. |
Standing water was removed near the landscape nursery area. |
28 June 2019 |
Chemical container should be placed in the drip tray to avoid any leakage (Location: Level 1, Zone B) |
(The status will be updated in the next submission) |
The Contractor has rectified the above deficiencies
immediately or within deadline. Therefore, the environmental performance of the
Project managed by the Contractor with OPC was considered satisfactory.
Special attention shall be paid on the proper implementation
of mitigation measures to prevent runoff flow to public area.
As a general reminder, dust mitigation measures should be
enforced to prevent fugitive dust from haul road, idle slope work and construction
activities; and the site tidiness should be maintained. Furthermore, all
chemical materials shall be stored in designated area after use with drip tray.
No environmental complaint, summons
and prosecution were received in the Reporting Period.
The statistical summary for environmental complaints is
presented in Table 9.
Table 9: Statistics for complaints, notifications of summons
and successful prosecutions
Reporting Period |
Cumulative Statistics |
|
|
|
Complaints |
Notifications of summons |
Successful prosecutions |
This report month |
0 |
0 |
0 |
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
N.
The Project shall be implementing
the required environmental mitigation measures according to the approved
EM&A Manual as subject to the site condition. Environmental
mitigation measures generally implemented by the Contractor in this Reporting
Month are summarized in
Table 10.
Table 10: Environmental Mitigation
Measures
Issues |
Environmental Mitigation Measures |
Construction |
● Construction equipment shut down when not in use |
Ecology |
● Wire fencing was provided for temporary protection of the
identified flora species of ● Site inspection of the flora species of conservation and
the Ardeid |
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 ● 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 |
Construction
activities to be undertaken in the coming month for the Project are listed
below:
● Site formation for ride footing &
column construction
● Cut soil slope and soil nail
installation for Ride P1 and P3
● Rock breaking and slope stabilization
works for Ride P1 to P5
● Drainage works at A4
● Rising Main construction (PJD &
slope portions)
● Footing and column construction at P3
● Backfilling for ride footing
● Erection of steel working
platform at P5
● Main Building: B1 water tank and
drainage work. ABWF in B1, L1, L2 and L3 Secondary structure
construction; L2M E&M works; L2 Block work and ABWF works, area Pool B, C,
D, E, F, H, R filtration pipe works installation and pool structure
construction; Indoor Wave Pool construction, Outdoor Wave Pool A ABWF works,
Roof ABWF & Landscape works (Green Roof, Curtain Wall, ETFE), Lift
installation works & ABWF, L2 On-grade Slab (rebar fixing and concreting of
on-grade slab etc.), L2 North Cladding Wall construction, core 3 staircase,
lift shat installation works and ABWF works
● South Transformer Room: ABWF
● South Plant Room :
E&M
● External Area: Laying of underground
utilities, removal of concrete paving, manholes and watermain construction,
trench exaction for cables & pipes, backfilling
Based on construction activities as undertaken
in the coming month, key environment issues consider to be included:
● Potential fugitive dust impact due
to the dry/loose/exposure soil surface/dusty material;
● Potential water quality impact due
to surface runoff especially on the hillside;
● Potential wastewater impact due to
dust suppression measures;
● Implement dust suppression measures
at all times;
● Ensure noise and dust mitigation
measures are implemented properly;
● Sediment catch-pits and silt removal
facilities should be regularly maintained;
● Site effluent discharge shall be
fulfilled the discharge license requirements;
● Proper implementation of the
management of chemical wastes;
● Ensure chemical storage is managed
properly;
● Implementation of construction noise
preventative control measures; and
● Cleanliness and tidiness in
construction site should be maintained properly.
● 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 on specific machines.
● 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.