Contents
Executive
Summary
1.1
Background
1.2
Project
Description
1.3
Scope of the EM&A Report
1.4
Project Organisation
1.5
Summary of Construction Works
1.6
Summary of EM&A Programme Requirements
1.7
Status of Statutory Environmental Compliance with
the Environmental Permit
1.8
Status of Other Statutory Environmental
Requirements
2.1
Air Quality Monitoring
2.2
Noise Monitoring
2.3
Surface Water Quality Monitoring
2.4
Landscape and Visual Monitoring
2.5
EM&A Site Inspection
2.6
Waste Management Status
2.7
Implementation Status of Environmental Mitigation
Measures
2.8
Summary of Exceedances of the Environmental Quality
Performance Limit
2.9
Summary of Complaints, Notification of Summons and
Successful Prosecutions
3.1
Construction Programme for the Coming Month
3.2
Key Issues for the Coming Month
3.3
Monitoring Schedule for the Coming Month
4
Conclusion
and Recommendation
Annexes
Annex A Work Programme
Annex B Environmental
Mitigation Implementation Schedule
Annex C Monitoring
Schedule for This Reporting Period
Annex D Air Quality
Annex D1 Calibration
Certificates for Dust Monitoring Equipment
Annex D2 24-hour TSP
Monitoring Results
Annex D3 Event and
Action Plan for Dust Monitoring
Annex D4 Meteorological
Data
Annex E Noise
Annex E1 Calibration
Certificates for Noise Monitoring Equipment
Annex E2 Noise
Monitoring Results
Annex E3 Event and
Action Plan for Noise Monitoring
Annex F Surface Water Quality
Annex F1 Calibration
Certificates for Surface Water Quality Monitoring Equipment
Annex F2 Surface Water
Quality Monitoring Results
Annex F3 Event and
Action Plan for Surface Water Quality Monitoring
Annex H Monitoring
Schedule for the Next Reporting Period
Executive Summary
The SENT Landfill Extension (SENTX) forms an integral part in the
Strategic Plan in maintaining the continuity of landfill capacity in the Hong
Kong for the cost-effective and environmentally satisfactory disposal of
waste. ERM-Hong Kong, Limited (ERM) is commissioned to undertake the role
of Environmental Team (ET) for the construction, operation/restoration and
aftercare of SENTX Project (“the Project”) in accordance with the requirements
specified in the Environmental Permit (EP), updated Environmental Monitoring
and Audit (EM&A) Manual, the approved Environmental Impact Assessment (EIA)
Report of the Project taking account of the latest design and other relevant
statutory requirements. The construction (not including works related to
site clearance and preparation) of the Project commenced on 2 January 2019.
This Monthly
EM&A report presents the EM&A works carried out during the period from
1 to 31 March 2019 for the Project in accordance with the updated EM&A
Manual.
Exceedance of
Action and Limit Levels for Air Quality
No exceedance
of Action and Limit Levels was recorded for construction air quality monitoring
in the reporting period.
Exceedance of
Action and Limit Levels for Noise
No exceedance
of Action and Limit Levels was recorded for construction noise monitoring in
the reporting period.
Exceedance of
Action and Limit Levels for Surface Water Quality
One Limit
Level of pH exceedance and two Limit Level of Suspended Solids (SS) exceedances
were recorded for surface water quality impact monitoring in the reporting
period. The exceedances were considered not Project-related upon further
investigation.
Environmental
Complaints, Summons and Prosecutions
There were no
complaints, notification of summons or prosecution recorded in the reporting
period.
Reporting
Change
There was no reporting change in the reporting period.
Future Key
Issues
Potential
environmental impacts arising from the upcoming construction activities in the
next reporting period of April 2019 are mainly associated with dust emission
from the construction works and from the exposed area.
1
Introduction
1.1
Background
The SENT Landfill Extension (SENTX) forms an integral part in the
Strategic Plan in maintaining the continuity of landfill capacity in the Hong
Kong for the cost-effective and environmentally satisfactory disposal of
waste. The Environmental Impact Assessment (EIA) Report and the
associated Environmental Monitoring and Audit (EM&A) Manual for the
construction, operation, restoration and aftercare of the SENTX (hereafter
referred to as “the Project”) have been approved under the Environmental
Impact Assessment Ordinance (EIAO) in May 2008 (Register No.:
AEIAR-117/2008) (hereafter referred to as the approved EIA Report) and an
Environmental Permit (EP-308/2008) (EP) was granted by the Director of
Environmental Protection (DEP) on 5 August 2008.
Since then,
applications for Variation of an Environmental Permit (No. VEP-531/2017) were
submitted to EPD and the Variation of Environmental Permits (EP-308/2008/A and
EP-308/2008/B) were granted on 6 January 2012 and 20 January 2017,
respectively, as the Hong Kong SAR Government has decided to reduce the scale
of the design scheme of SENTX assessed in the approved EIA Report and SENTX
will only receive construction waste. In May 2018, a Further
Environmental Permit (FEP) (FEP-01/308/2008/B) was granted to the SENTX’s contractor,
Green Valley Landfill, Limited (GVL).
ERM-Hong Kong, Limited (ERM) and Meinhardt Infrastructure and
Environment Limited (Meinhardt) are commissioned to undertake the roles of
Environmental Team (ET) and the Independent Environmental Checker (IEC),
respectively, to undertake the EM&A activities for the Project in
accordance with the requirements specified in the EP, updated EM&A Manual ([1]),
approved EIA Report ([2])
taking account of the latest design and other relevant statutory requirements.
1.2
Project
Description
The SENTX is a piggyback landfill, occupying the southern part of the
existing SENT Landfill (including its infrastructure area) and 13 ha of Tseung
Kwan O (TKO) Area 137. A layout plan of the SENTX is shown in Figure 1.1. Under
the latest design, the SENTX has a net void capacity of about 6.5 Mm3
and provides an additional lifespan of about 6 years, commencing operation upon
exhaustion of the SENT Landfill. The SENTX will receive construction
waste only.
The key implementation milestones of the Project are indicatively
summarised in Table 1.1. The construction works of the Project
commenced on 2 January 2019.
Table
1.1 Estimated Key Dates of
Implementation Programme
|
Key Stage of the Project |
Indicative Date |
|
Start construction |
2 January 2019 |
|
Commissioning of new infrastructure facilities |
2020 |
|
Demolition of existing infrastructure facilities |
2021 |
|
Start waste intake at SENTX |
2021 or upon exhaustion of SENT Landfill |
|
Estimated exhaustion date of SENTX |
2027 |
|
End of aftercare for SENTX |
2057 |
The major construction works of the SENTX includes:
·
Site formation at the TKO Area 137 and the
existing infrastructure area at SENT Landfill;
·
Construction of surface and groundwater
drainage systems;
·
Construction of the leachate containment and
collection systems;
·
Construction of new leachate and landfill gas
treatment facilities, site offices, maintenance yards at the new infrastructure
area;
·
Construction of new pipelines to transfer the
leachate and landfill gas collected from the existing SENT Landfill to the
treatment facilities at the new infrastructure area;
·
Construction of the site access and new waste
reception facilities; and
·
Demolition of the facilities at the existing
SENT Landfill infrastructure area.
1.3
Scope of the EM&A
Report
This is the
Monthly EM&A Report for the Project which summarises the key findings of
the EM&A programme during the reporting period from 1 to 31 March 2019 for
the construction works.
1.4
Project Organisation
The
organization structure of the Project is presented in Figure
1.2.
Figure 1.2 Organisation
Chart
Contact
details of the key personnel are summarized in Table 1.2 below.
Table
1.2 Contact Information of Key
Personnel
|
Party |
Position |
Name |
Telephone |
|
Contractor (Green Valley Landfill Limited) |
Project Manager |
Gary Barnicott |
2706 8827 |
|
Environmental Team (ET) (ERM-Hong Kong, Limited)
|
ET Leader |
Frank Wan |
2271 3152 |
|
Independent Environmental Checker (IEC) (Meinhardt Infrastructure and Environment Limited)
|
IEC |
Fredrick Leong |
2859 1739 |
1.5
Summary of Construction
Works
The programme
of the construction is shown in Annex
A. As informed by the Contractor, details of the major works
carried out in this reporting period are listed below:
·
Erection
of site fencing;
·
Construction
of perimeter bund – Cell 1X;
·
Excavation
of sediment trap and inlet box culvert X9;
·
Formation
of new Infrastructure Area;
·
Plate
load test for new Infrastructure Area;
·
Remediation
works for DP4 Channel; and
·
Advance
screen planting.
The environmental mitigation implementation
schedule is presented in Annex
B.
1.6
Summary of EM&A
Programme Requirements
The status
for all environmental aspects are presented in Table 1.3. The
EM&A requirements remained unchanged during the reporting period.
Table
1.3 Summary of Status for the
Environmental Aspects under the Updated EM&A Manual
|
Parameters |
Status |
|
Air Quality |
|
|
Baseline Monitoring |
The results of baseline air quality monitoring were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.3 |
|
Impact Monitoring |
On-going |
|
Noise |
|
|
Baseline Monitoring |
The results of baseline noise monitoring were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.3 |
|
Impact Monitoring |
On-going |
|
Surface Water Quality |
|
|
Baseline Monitoring |
The results of baseline surface water quality monitoring were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.3 |
|
Impact Monitoring |
On-going |
|
Waste Management |
|
|
Waste Monitoring |
On-going |
|
Landscape and Visual |
|
|
Baseline Monitoring |
The results of baseline landscape and visual monitoring were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.3 |
|
Construction Phase Audit |
On-going |
|
Site Environmental Audit |
|
|
Regular Site Inspection |
On-going |
|
Complaint Hotline and Email Channel |
On-going |
|
Environmental Log Book |
On-going |
Taking into
account the construction works, impact monitoring of air quality, noise,
surface water quality and waste management were carried out in the reporting
period. The monitoring schedule of air quality, noise and surface water
quality monitoring are provided in Annex C.
The EM&A
programme also involved environmental site inspections and related auditing
conducted by the ET for checking the implementation of the required
environmental mitigation measures recommended in the approved EIA Report and
relevant EP submissions. To promote the environmental awareness and
enhance the environmental performance of the contractors, environmental
trainings and regular environmental management meetings were conducted during
the reporting period, which are summarized as below:
Ÿ One environmental management meeting was held with
the Contractor, ER, ET, IEC and EPD on 14 March 2019; and
Ÿ Environmental toolbox trainings on Waste Water Management and
Vehicle Maintenance Practices were provided on 11 and 26 March 2019 respectively
by the Contractor to the workers.
1.7
Status of Statutory
Environmental Compliance with the Environmental Permit
The status of statutory environmental compliance with
the EP conditions under the EIAO, submission status under the EP and
implementation status of mitigation measures are presented in Table
1.4.
Table
1.4 Status of Submissions and
Implementation Status of Mitigation Measures under EP
|
EP Condition |
Submission / Implementation Status |
Status |
|
2.3 |
Management Organisation of Main Construction Companies |
Accepted by EPD. |
|
2.4 |
Setting up of Community Liaison Group |
Community Liaison Group was set up. |
|
2.5 |
Submission of Detailed Landfill Gas Hazard Assessment Report |
Accepted by EPD on 10 January 2019. |
|
2.6 |
Submission of Restoration and Ecological Enhancement Plan |
To be prepared within 6 months after the commencement of construction of the Project. |
|
2.7 |
Setting up of Trial Nursery |
To be set up during construction phase. |
|
2.8 |
Advance Screen Planting |
To be completed within 9 months of taking procession of the Project Site. |
|
2.9 |
Provision of Multi-layer Composite Liner System |
Under implementation. |
1.8
Status of Other Statutory
Environmental Requirements
The
environmental licenses and permits, including environmental permit, water
discharge license, registration as chemical waste producer and construction
noise permit, which are valid in the reporting period are presented in Table
1.5. No non-compliance with environmental statutory requirements was
recorded.
Table
1.5 Status of Statutory
Environmental Requirements
|
Description |
Ref No. |
Status |
|
Environmental Permit |
EP-308/2008 |
Granted on 5 August 2008 |
|
Variation of Environmental Permit |
EP-308/2008/A |
Granted on 6 January 2012 |
|
EP-308/2008/B |
Granted on 20 January 2017 |
|
|
Further Environmental Permit |
FEP-01/308/2008/B |
Granted on 16 May 2018 |
|
Water Discharge License under Water Pollution Control Ordinance (Permit Holder: Chun Wo) |
- |
Application submitted on 19 June 2018 |
|
Billing Account for Disposal of Construction Waste
|
Chit Account Number: 5001692 |
Approved on 28 December 2005 |
|
Registration as Chemical Waste Producer (Permit Holder: Chun Wo) |
5213-839-C3507-10 |
Issued on 23 August 2018 |
|
Construction Noise Permit (Permit Holder: Chun Wo) |
GW-RE0002-19 |
Validity from 8 January 2019 to 1 July 2019 |
2
EM&A
Results
The EM&A
programme for the Project required environmental monitoring for air quality,
noise and surface water quality as well as environmental site inspections for
air quality, noise, surface water quality, waste management, and landscape and
visual impacts. The EM&A requirements and related findings for each
component are summarized in the following sections.
2.1
Air Quality Monitoring
2.1.1
Monitoring Requirements and
Equipment
According to
the updated EM&A Manual of the Project, impact air quality monitoring
(dust, in term of Total Suspended Particulates (TSP)) was carried out at the two designated monitoring locations (i.e. DM1 and
DM2) at a 6-day interval. As there are two existing TSP monitoring stations
(i.e. TKO-A1 and TKO-A2a) currently operating by the Civil Engineering and
Development Department (CEDD) to monitor the 24-hour TSP levels at the proposed
dust monitoring stations for the SENTX, it is considered that the CEDD
monitoring data can represent the dust condition of the SENTX during the
construction phase.
The Action
and Limit Levels of the air quality monitoring is provided in Table 2.1
below.
Table
2.1 Action and Limit Levels for
24-hour TSP
|
Monitoring Station |
Action Level |
Limit Level |
|
DM-1 – Site Egress of TKO Area 137 Fill Bank
|
204 µg m-ł |
260 µg m-ł |
|
DM-2A –Combined Reception and Exit Office (CREO) of TKO Area 137 Fill Bank |
193 µg m-ł |
260 µg m-ł |
High volume air samplers (HVSs) in compliance with
the specifications listed under Section 3.2.2 of the updated EM&A Manual
were used to measure 24-hour TSP levels at the CEDD dust monitoring
stations. The HVSs were calibrated upon installation and thereafter at
bi-monthly intervals to check the validity and accuracy of the results.
The equipment
used in the impact air quality monitoring programme and monitoring locations
are summarized in Table 2.2 and illustrated in Figure 2.1 respectively.
Copies of the calibration certificates for the equipment are presented in Annex D1.
Table
2.2 Dust Monitoring Details
|
Monitoring Station |
Location |
Parameter |
Frequency and Duration |
Monitoring Dates |
Equipment |
|
DM1 |
Site Egress of TKO Area 137 Fill Bank |
24-hour TSP |
Once every 6 days during the construction phase of the Project |
5, 11, 17, 23, 29 March 2019 |
HVS Greasby 105 (S/N: 9795 (ET/EA/003/18)) |
|
DM2 |
Combined Reception and Exit Office (CREO) of TKO Area 137 Fill Bank |
|
HVS Andersen G1051 (S/N: 1176 (ET/EA/003/05)) |
2.1.2
Monitoring Schedule for the
Reporting Month
The schedule
for air quality monitoring during the reporting period is provided in Annex C.
2.1.3
Results and Observations
The
monitoring results for 24-hour TSP are summarized in Table 2.3.
The detailed monitoring results and the graphical presentation of the 24-hour
TSP results at each monitoring location are provided in Annex D2.
Table
2.3 Summary of 24-hour TSP
Monitoring Results in the Reporting Period
|
Monitoring Station |
Average 24-hr TSP Concentration (µg m-3) (Range in bracket) |
Action Level (µg/m3) |
Limit Level (µg/m3) |
|
DM-1 – Site Egress of TKO Area 137 Fill Bank |
88 (67 - 107)
|
204 |
260 |
|
DM-2A –Combined Reception and Exit Office (CREO) of TKO Area 137 Fill Bank |
95 (68 - 113) |
193 |
260 |
The major
dust sources in the reporting period included fugitive dust emission from
exposed area in SENTX, as well as nearby operations of the existing SENT
landfill and the TKO Area 137 Fill Bank.
All the
24-hour TSP results were below the Action and Limit Levels at the monitoring
locations in the reporting period. No action is thus required to be
undertaken in accordance with the Event and Action Plan presented in Annex D3.
2.1.4
Meteorological Data
Meteorological
data obtained from the on-site meteorological monitoring station at the
existing SENT landfill (see Figure
2.1) were used for the dust monitoring and are shown in Annex D4. The
meteorological station will be relocated to a new position for SENTX as per the
updated EM&A Manual after the new infrastructure area at the SENTX is
constructed. It is considered that meteorological data obtained at the
existing the on-site meteorological monitoring station are representative of
the Project area and could be used for the construction phase dust monitoring
programme for the Project.
2.2
Noise Monitoring
2.2.1
Monitoring Requirements and
Equipment
According to
the updated EM&A Manual of the Project, impact noise monitoring was
conducted weekly at the monitoring location (i.e. NM1) to obtain one set of 30
minutes measurement between 07:00 and 19:00 hours on normal weekdays.
The Action
and Limit Level for construction noise of the Project is provided in Table
2.4 below.
Table
2.4 Action and Limit Levels for
Construction Noise
|
Time Period |
Action Level (a) |
Limit Level (b) |
|
07:00 – 19:00 hrs on normal weekdays |
When one documented complaint is received from any one of the noise sensitive receivers (NSRs) or 75 dB(A) recorded at the monitoring station |
75 dB(A) at NSRs |
|
Notes: (a) 75dB(A) along and at about 100m from the SENTX site boundary was set as the Action Level. (b) Limits specified in the GW-TM and IND-TM for construction and operational noise, respectively. |
||
Noise
monitoring was performed by ALS Technichem (HK) Pty Ltd. (HOKLAS Registration
No. 066) using sound level meter at the designated monitoring station NM1 (see Figure 2.1) in accordance with
the requirements stipulated in the updated EM&A
Manual. Acoustic calibrator was deployed to check the sound level
meter at a known sound pressure level. Details of the deployed equipment
are provided in Table 2.5. Copies of the calibration certificates
for the equipment are presented in Annex E1.
Table
2.5 Noise Monitoring Details
|
Monitoring Station (1) |
Location |
Parameter |
Frequency and Duration |
Monitoring Dates |
Equipment |
|
NM1 |
SENTX Site Boundary (North) |
Leq (30 min) measurement between 07:00 and 19:00 hours on normal weekdays (Monday to Saturday) |
Once per week for 30 mins during the construction period of the Project |
7, 13, 22, 28 March 2019 |
Sound Level Meter: B&K 2238 (S/N: 2285722)
Acoustic Calibrator: Quest QC-20 (S/N: QO9090006)
|
2.2.2
Monitoring Schedule for the
Reporting Month
The schedule
for noise monitoring during the reporting period is provided in Annex C.
2.2.3
Results and Observations
Results for
noise monitoring are summarized in Table 2.6. The monitoring
results and the graphical presentation of the data are provided in Annex E2.
Table
2.6 Summary of Construction Noise
Monitoring Results in the Reporting Period
|
Monitoring Station |
Measured Noise Level Leq (30 min), dB(A) |
||
|
Average |
Range |
Action and Limit Level |
|
|
NM1 |
52.2 |
51.1 – 53.1 |
75 |
Major noise
sources during the noise monitoring included noise from operations of the
existing SENT landfill and the TKO Area 137 Fill Bank, aircrafts and insects.
No Action and
Limit Levels exceedance was recorded for construction noise monitoring in the reporting
period. No action is thus required to be undertaken in accordance with
the Event and Action Plan presented in Annex E3.
2.3
Surface
Water Quality Monitoring
2.3.1
Monitoring Requirements and
Equipment
According to
the updated EM&A Manual of the Project, impact surface water quality
monitoring were carried out at the three designated surface water discharge
points (i.e. DP3, DP4 and DP6) weekly to ensure that the SENTX will not cause
adverse water quality impact.
Dissolved
Oxygen (DO) and pH value were measured in-situ whereas the level of suspended
solids (SS) were determined by ALS Technichem (HK) Pty Ltd. (HOKLAS
Registration No. 066).
The Action
and Limit Levels of the surface water quality impact monitoring are provided in
Table 2.7.
Table
2.7 Action and Limit Levels for
Surface Water Quality
|
Parameters |
Action Level |
Limit Level |
||
|
|
DP3 |
DP4 & DP6 |
DP3 |
DP4 & DP6 |
|
DO |
< 5.13 mg/L |
< 5.80 mg/L |
< 4.35 mg/L |
< 5.42 mg/L |
|
SS |
> 209.3 mg/L |
> 11.7 mg/L |
> 217.0 mg/L |
> 12.7 mg/L |
|
pH |
> 8.88 |
> 8.39 |
> 9.28 |
> 8.40 |
The locations of the monitoring stations under the
Project are shown in Figure
2.1. All in situ monitoring instruments were checked,
calibrated and certified by a laboratory accredited under HOKLAS or other
international accreditation scheme before use, and subsequently re-calibrated
at 3 monthly intervals throughout all stages of the surface water quality
monitoring programme. Calibration for a DO meter was carried out before
measurement according to the instruction manual of the equipment model.
Details of the equipment used in the impact surface water quality monitoring
works are provided in Table 2.8. Copies of the
calibration certificates for the equipment are presented in Annex F1.
Table
2.8 Impact Surface Water
Quality Monitoring Details
|
Monitoring Station |
Location |
Frequency |
Monitoring Dates |
Parameter |
Equipment |
|
DP3 |
Surface water discharge point DP3 |
Weekly |
8, 13, 22, 28 March 2019 |
•pH •DO •SS |
YSI Professional DSS (S/N: 15H102620/ 15H103928) |
|
DP4 |
Surface water discharge point DP4 |
||||
|
DP6 |
Surface water discharge point DP6 |
2.3.2
Monitoring Schedule for the
Reporting Month
The schedule
for surface water quality monitoring during the reporting period is provided in
Annex C.
2.3.3
Results and Observations
A total of 4
monitoring events for impact surface water quality monitoring were scheduled at
all designated monitoring stations during the reporting period. However,
sampling could not be carried out on 8 March 2019 at DP6, 13 March 2019 at DP4
and DP6 and 22 and 28 March 2019 at all monitoring locations due to
insufficient flow. Impact water quality
monitoring results and graphical presentations are provided in Annex F2.
Action and
Limit Level exceedances were recorded for surface water quality impact
monitoring in the reporting period and actions in accordance with the Event and
Action Plan presented in Annex
F3 were undertaken. Investigations on the Action and Limit Levels
exceedances were conducted and summarized in Table 2.9 below.
Table
2.9 Details of Exceedances
Recorded for Surface Water Quality Monitoring
|
Date |
Monitoring Location |
Parameter |
Type of Exceedance |
Remarks |
|
8 March 2019 |
DP3 |
pH |
Limit Level |
The absence of construction works at the upstream of and in the vicinity of DP3 and DP4 might suggest that the exceedance at DP3 and DP4 are deemed to activities that are not related to the Project. |
|
8 March 2019 |
DP3 |
SS |
Limit Level |
|
|
8 March 2019 |
DP4 |
SS |
Limit Level |
Based on the
investigation conducted for each of the monitoring event with potential Action
and Limit Levels exceedances with the Contractor, and the IEC, there is no
evidence showing the exceedances were related to the Project.
Nevertheless, the Contractor was reminded to implement all relevant mitigation
measures for the construction works and maintain good site practice. The
ET will keep track on the monitoring data and ensure Contractor’s compliance of
the environmental requirements.
2.4
Landscape and Visual
Monitoring
2.4.1
Monitoring Requirements
According to
the updated EM&A Manual of the Project, the monthly landscape and visual
audit was conducted on 21 March 2019 to monitor the implementation of the landscape and visual mitigation measures
during construction phase.
All relevant
environmental mitigation measures listed in the approved EIA Report and the
EM&A Manual and their implementation status are summarised in Annex B.
2.4.2
Results and Observations
The
Contractor has implemented environmental mitigation measures as stated in the
approved EIA Report and the EM&A Manual.
Regarding the
landscape and visual audit, the Contractor was reminded to identify the topsoil
to be generated from the construction works and plan for the storage and re-use
of the topsoil where practical. The Contractor shall consider the
mitigation measures during the design phase, including the preparation of the
Construction Drawings and Detailed Landscape Design Drawings. In
addition, the Contractor was reminded to complete the advance screen planting
works within 9 months of taking possession of the SENT Site (i.e. by September
2019).
2.5
EM&A Site Inspection
Site inspections were carried out on a weekly basis
with the Contractor, IEC and ER to monitor the implementation of proper
environmental pollution control and mitigation measures for air
quality, noise, surface water quality and waste management under the Project. In the reporting period, 4
site inspections were carried out on 7, 14, 21 and 28 March 2019.
Key
observations during the site inspections are summarized in Table 2.10.
Table 2.10 Key Observations
Identified during the Site Inspection in this Reporting Month
|
Inspection Date |
Environmental Observations and Recommendations |
|
7 March 2019 |
· The Contractor shall maintain the slit trap at DP6 channel. · The Contractor shall clear the general refuse near the Chun Wo’s vehicle entrance and DP6. |
|
14 March 2019 |
· The Contractor shall minimize and compact the exposed soil near the DP6 channel to avoid SS runoff to the water channel. |
|
21 March 2019 |
· The Contractor shall implement dust control measures when conducting activities related to dusty materials (i.e. handling of sawdust). |
|
28 March 2019 |
· The Contractor shall avoid accumulation of stagnant water in the drip trays in Cell X1 area and near DP6. |
The
Contractor has rectified all of the observations identified during
environmental site inspections in the reporting period.
2.6
Waste Management Status
The
Contractor has registered as chemical waste producer under the Contract.
Sufficient numbers of receptacles were available for general refuse collection
and sorting.
As informed
by the Contractor, waste generated during this reporting period include mainly
inert C&D materials. Reference has been made to the waste flow table
prepared by the Contractor. The quantities of different types of wastes
and imported fill materials are summarised in Table 2.11.
Table 2.11
Quantities of Different Waste Generated and Imported Fill Materials
|
Month/ Year |
Inert
C&D Materials (a) |
Imported
Fill (b) |
Inert
Construction Waste Re-used |
Non-inert
Construction Waste (b) |
Recyclable
Materials (c) (in ‘000kg) |
Chemical
Wastes |
|
|
Rock |
Soil |
||||||
|
1 -
31 Mar 19 |
0.032 |
1482.09 |
0 |
0 |
0.006 |
0 |
0 |
|
Notes: (a) Inert construction wastes include hard rock and large
broken concrete, and materials disposed as public fill. Density assumption: 1.6 (kg/L) for public fill (b) Non-inert construction wastes include general refuse
disposed at landfill. Density assumption: 0.9 (kg/L) for general refuse. (c) Recyclable materials include metals, paper, cardboard,
plastics and others. |
|||||||
2.7
Implementation
Status of Environmental Mitigation Measures
A summary of
the Environmental Mitigation Implementation Schedule is presented in Annex B. The necessary
mitigation measures were implemented properly for the Project.
2.8
Summary of Exceedances of
the Environmental Quality Performance Limit
Results for
air quality monitoring (24-hour TSP) complied with the Action and Limit Levels
in the reporting period. No Action and Limit Levels exceedances were
recorded for construction noise monitoring. One Limit Level of pH
exceedance and two Limit Level of Suspended Solids (SS) exceedances were
recorded for surface water quality impact monitoring in the reporting
period. The exceedances were considered not Project-related upon further
investigation.
Cumulative
statistics on exceedances is provided in Annex G.
2.9
Summary of Complaints,
Notification of Summons and Successful Prosecutions
There were no
complaints, notification of summons or prosecution recorded in the reporting
period.
Statistics on
complaints, notifications of summons, successful prosecutions are summarised in
Annex G.
3
Future
Key Issues
3.1
Construction Programme for
the Coming Month
As informed
by the Contractor, the major works for the Project in April 2019 will be:
·
Site
preparation in Area X1 and X2;
·
Site
clearance works at Area X1 and X2;
·
Excavating
and removing unsuitable fill material and commencement of import material from
SENT;
·
Site
formation works at Area X1;
·
Fill
works of perimeter bund for Cell 1X;
·
Excavation
of Area A;
·
Construction
of sediment trap and inlet box culvert X9 construction;
·
Plate
load test for the formation of proposed infrastructures;
·
Construction
of additional wheel washing bay at Part X2;
·
Construction
of Buttress Wall;
·
Construction
of raft foundation of Leachate Treatment Plant (LTP);
·
Construction
of CLP trench works in Part X2;
·
Excavation
of sediment trap discharge box culvert; and
·
Advance
screen planting.
3.2
Key
Issues for the Coming Month
Potential
environmental impacts arising from the above upcoming construction activities
in the next reporting period of April 2019 are mainly associated with dust
emission from the construction works and in the exposed area. The ET will
keep track on the construction works to confirm compliance of environmental
requirements and the proper implementation of all necessary mitigation
measures.
3.3
Monitoring Schedule for
the Coming Month
The tentative
schedules for environmental monitoring in April 2019 are provided in Annex H.
4
Conclusion
and Recommendation
This EM&A Report presents the findings of the EM&A activities
undertaken during the period from 1 to 31 March 2019 in accordance with the
updated EM&A Manual and the requirements of the Environmental Permit
(EP-308/2008/B).
Air quality (24-hour TSP), noise and water quality (DO, pH and SS)
monitoring were carried out in the reporting period. Results for air
quality monitoring (24-hour TSP) complied with the Action and Limit Levels in
the reporting period. No Action and Limit Levels exceedances were
recorded for construction noise monitoring. One Limit
Level of pH exceedance and two Limit Level of Suspended Solids (SS) exceedances
were recorded for surface water quality impact monitoring in the reporting
period. The exceedances were considered not Project-related upon further
investigation.
Environmental
site inspections were carried out during the reporting period.
Recommendations on remedial actions were given to the Contractor for the
deficiencies identified during the site inspections.
There were no
complaints, notification of summons or prosecution recorded in the reporting
period.
The ET will
keep track on the construction works to confirm compliance of environmental
requirements and the proper implementation of all necessary mitigation
measures.