1.1.1
Civil Engineering and Development
Department (CEDD) is the Project
Proponent for the Project
“Site Formation and Associated
Infrastructural Works for Development of Columbarium, Crematorium and Related
Facilities at Sandy Ridge Cemetery”. The Project is a Designated Project to be implemented
under Environmental Permit No. EP-534/2017/A and FEP-01/534/2017/A. The layout plan of the Project is shown
in Appendix A. Major works to be executed under the Project shall include to the
following:
Designated Works under EP-534/2017/A
(i)
Site formation of about 5.5 hectares of land
and associated drainage, sewerage and landscape works for development of
Columbarium and Crematorium facilities at the Sandy Ridge Cemetery;
(ii)
Construction of a new road (about 800m)
connecting the Crematorium and Man Kam To Road and the pick-up/drop-off point
at Man Kam To Road;
(iii)
Widening two sections of the existing
Sha Ling Road (about 900m and 500m respectively);
(iv)
Widening of about 1.4km of the existing
Lin Ma Hang Road; and
(v)
Improvement works to the existing
barging point at Siu Lam (the barging point is rejected by Tuen Mun DC and no
improvement works required)
Designated Works under FEP-01/534/2017/A
(i)
Site formation works for a formed
platform of about 1.8 hectares and associated drainage, sewerage and landscape
works for development of Columbarium at the Sandy Ridge Cemetery;
(ii)
Construction of the pick-up/drop-off
point at Man Kam To Road;
(iii)
Widening of 900m of the existing Sha
Ling Road;
(iv)
Improvement works to the existing
barging point at Siu Lam (the barging point is rejected by Tuen Mun DC and no
improvement works required)
1.1.2
To facilitate
the Project management, the Project works were separated into three Contracts to be executed which
are described in below sub-sections.
1.1.3
Contract No. CV/2016/10 – Site
Formation and Associated Infrastructural Works for Development of Columbarium
at Sandy Ridge Cemetery (hereinafter
named “Contract 1”):-
Ÿ
Site formation of about 1.77 ha of land for the proposed pick-up
and drop-off area for shuttle bus operation;
Ÿ
Upgrading of a section of 900m existing Sha Ling Road from 3m wide
carriageway to 7.3m wide carriageway with footpath at both sides;
Ÿ
Construction of one EVA with a total length of about 160m;
Ÿ
Construction of noise barriers along Sha Ling Road;
Ÿ
Modification of junction between Man Kam To Road and Sha Ling
Road;
Ÿ
Construction of a new pick up / drop off point at Man Kam To Road;
Ÿ
Relocation and construction of a new refuse collection point near
junction between Man Kam To Road and Sha Ling Road;
Ÿ
Associated geotechnical works including cut and fill slopes, soil
nailing works and retaining structures;
Ÿ
Associated drainage, sewerage and waterworks along Sha Ling Road;
and
Ÿ
Associated landscaping works.
1.1.4
Contract
No. CV/2017/02 – Infrastructural Works at Man Kam To Road and Lin Ma Hang Road
for Development of Columbarium at Sandy Ridge Cemetery (hereinafter
named “Contract 2”):-
Ÿ
Construction of a new road connecting Columbarium site to
Crematorium site;
Ÿ
Construction of one EVA with a total length of about 300m;
Ÿ
Widening of a section of 1.4 km long Lin Ma Hang Road (between Man
Kam To Road and Ping Yuen River) from 6m wide carriageway to 7.3m with 2m width
footpath on both sides;
Ÿ
Provision of a pair of lay-by at Lin Ma Hang Road;
Ÿ
Construction of a new vehicular access connecting the Sheung Shui
Landmark North PTI and Lung Sum Avenue;
Ÿ
Construction of covered walkway along Fanling
Station Road;
Ÿ
Removal of planters and central divider along Fanling
Station Road and San Wan Road;
Ÿ
Associated drainage, sewerage, waterworks and utility works along
Man Kam To Road and Lin Ma Hang Road;
Ÿ
Associated geotechnical works including cut and fill slopes, soil
nailing works and retaining structures; and
Ÿ
Associated landscaping works.
1.1.5
CEDD
Contract No. (to be confirmed):-
Ÿ
Site Formation for the platform of the columbarium site;
Ÿ
Construction of two 2 at-grade access roads;
Ÿ
Construction of road junction between Man Kam To Road and the new
access road;
Ÿ
Associated drainage, sewerage and waterworks along the two new
access roads;
Ÿ
Associated geotechnical works including cut and fill slopes, soil
nailing works and retaining structures; and
Ÿ
Associated landscaping works
1.1.6
Hsin Chong Tsun Yip Joint Venture (hereafter referred as “HCTYJV”) has been awarded Contract 1 on 5 December 2017. According to the
Contract requirement, HCTYJV shall take over the responsibility for part of the Environmental Permit No. EP-534/2017 for ease of management, therefore application for
Further Environmental Permit was submitted
by HCTYJV to
EPD on 26 January 2018 and
Further Environmental Permit No. FEP-01/534/2017 was granted to HCTYJV by EPD on 23 February 2018. Furthermore, EPD issued Environmental Permit No. FEP-01/534/2017/A
on 24 December 2018.
1.1.7
Sang Hing Civil Contractors Company Limited (hereinafter referred as “Sang Hing”) was awarded Contract 2
on 23 May 2018.
The Contract Works is a Designated Project as under Environmental Permit
(EP) No. EP-534/2017.
Furthermore, EPD issued Environmental
Permit No. EP-534/2017/A on
24 December 2018.
1.1.8
Action-United Environmental Services &
Consulting (AUES) has been commissioned by the Contractors as an
Environmental Team (ET) to
implement the Environmental
Monitoring and Audit (EM&A) programme in
accordance with the approved EM&A Manual as well as the associated duties.
As part of
the EM&A programme, baseline monitoring to determine the ambient environmental
conditions was completed before construction work
commencement. The Baseline
Monitoring Report (air, noise and water) certified by ET Leader (ETL) and
verified by Independent Environmental Checker (IEC) was submitted to
Environmental Protection Department (EPD) and it was approved by EPD on 25
October 2018.
1.1.9
Major construction work of Contract 1 and
Contract 2 was
commenced on 16 August 2018 and 5 November 2018 respectively.
1.1.10 This is the 64th Monthly EM&A Report summarizing the monitoring results and inspection findings for
the period
from 1st to 30th November 2023.
1.2.1
The
Monthly EM&A Report is
structured into the following sections:-
Section 1 Introduction
Section 2 Project Organization and Construction Progress
Section 3 Summary of Monitoring Requirements
Section 4 Air Quality Monitoring Results
Section 5 Noise Monitoring Results
Section 6 Water Quality Monitoring Results
Section 7 Ecology Monitoring Results
Section 8 Landscape & Visual
Section 9 Waste Management
Section 10 Site Inspections
Section 11 Environmental Complaints and Non-Compliance
Section 12 Implementation Status of Mitigation Measures
Section 13 Conclusions and Recommendation
2.
Project
Organization and Construction progress
2
2.1.1
To facilitate the project management and implementation, the
Project was divided
by the following contracts:
Ÿ Contract
1 (Contract No. CV/2016/10)
Ÿ Contract
2 (Contract No.
CV/2017/02)
Ÿ Contract
3 (Contract No. TBA)
2.1.2
Organization
structure and contact details of relevant parties with respect to on-site
environmental management are shown in Appendix B.
2.2
2.2.1
The construction works under C1 and C2 were completed.
2.3
Summary of Environmental Submissions
2.3
2.3.1
Summary of the relevant permits, licenses,
and/or notifications on environmental protection for the Project in this Reporting
Month is presented in Tables 2-1.
Table
2-1 Status of Environmental Licenses and Permits for Contract 2
|
Item
|
Description
|
License/ Permit ref
no.
|
License/ Permit Status
|
|
1
|
Air
Pollution Control (Construction Dust) Regulation
|
Ref. no. 440406
Acknowledged by EPD on 14/12/2018
|
Man Kam To Road (near Sha Ling Road to Kong Nga
Po Road
|
Valid
|
|
Ref. no. 440405
Acknowledged by EPD on 14/12/2018
|
Fanling
Station Road
|
Valid
|
|
Ref. no. 440404
Acknowledged by EPD on 14/12/2018
|
Sa Ling Road (Sandy Ridge Cemetery)
|
Valid
|
|
Ref. no. 440401
Acknowledged by EPD on 14/12/2018
|
Lin Ma Hang Road (San Uk
Ling – Muk Wu Nga Yiu)
|
Valid
|
|
Ref. no. 440402
Acknowledged by EPD on 14/12/2018
|
Lung Sum Avenue (near Landmark North)
|
Valid
|
|
2
|
Chemical
waste Producer Registration
|
WPN:
5213-641-S4151-01
Issued by EPD on 04/02/2019
|
Valid
|
|
3
|
Water
Pollution Control Ordinance
|
License no: WT00032936-2018
Issued date: 16/01/2019
Expire Date: 31/01/2024
|
Man Kam To Road & Lin Ma Hang Road, Man Kam To
|
Valid
|
|
License no: WT00033335-2019
Issued date: 29/03/2019
Expire Date: 31/03/2024
|
Columbarium at Sandy Ridge Cemetery
|
Valid
|
|
License no:
WT00034717-2019
Issued date: 9/10/2019
Expire Date: 31/10/2024
|
Fanling
Station Road
|
Valid
|
|
4
|
Billing
Account for Disposal of Construction Waste
|
Account
no.: 7031098
|
Valid
|
|
|
|
|
|
|
2.4
Summary of Submission Under the Environmental Permit Requirements
2.4
2.4.1
Tables 2-3 to 2-4 summarized the
submission status under the EP and/or FEP stipulation in the Reporting Month.
Table
2-3 Status of Submission as under FEP
|
Item
|
EP and / or FEP
Stipulation
|
Description
|
Status
|
|
1
|
Condition 2.10 of FEP
|
Management
organization of : i) the main construction
companies; ii) ET; and iii) IEC and the supporting team
|
Submitted and no approval is required.
|
|
2
|
Condition 2.11 of FEP
|
i) Detailed phasing programme
of all construction works; and ii) Location plan of all construction works
|
Submitted and no approval is required.
|
|
3
|
Condition 2.12 of FEP
|
Contamination
Assessment Plan (CAP)
|
Approved
by EPD on 27 May 2019
|
|
4
|
Condition 2.13 of FEP
|
Grassland
Reinstatement Plan
|
Approved
by EPD on 18 April 2023
|
|
5
|
Condition 2.14 to 2.16 of FEP
|
Vegetation Survey Report and Vegetation Transplantation Proposal for Contract
1
|
Approved by EPD on 12 October 2018
|
|
6
|
Condition 2.17 of FEP
|
Woodland Compensation Plan (Rev.05)
Woodland Compensation Plan (Rev.09)
|
Approved by EPD on 30 Jun 2020
Approved by EPD on 4 May 2023
|
|
7
|
Condition 2.18 of FEP
|
Monitoring and Survey Plan for
Golden-headed Cisticola for Contract 1 (Rev.02)
|
Approved by EPD on 22 Oct 2019
|
|
8
|
Condition 2.20 of FEP
|
Landscape & Visual
Mitigation and Tree Preservation Plan(s) Contract 1 (Rev.04)
|
Pending approval
|
|
9
|
Condition 2.22 of FEP
|
Traffic Noise Mitigation Plan Contract 1 (Rev. 4)
|
Pending approval
|
|
10
|
Condition 3.3 of the
FEP
|
Baseline Monitoring Report (Air, Noise
and Water)
|
Approved by EPD on 25 October 2018
|
|
11
|
Condition 4.2 of the
FEP
|
The Contract
Internet website
|
Internet website address has notified
EPD on 15 Jun
2018 and no approval is required.
|
Table
2-4 Status of Submission as under EP
|
Item
|
EP and / or FEP
Stipulation
|
Description
|
Status
|
|
1
|
Condition 2.10 of EP
|
Management
organization of : i) the main construction
companies; ii) ET; and iii) IEC and the supporting team
|
Submitted and no approval is required.
|
|
2
|
Condition 2.11 of EP
|
i) Detailed phasing programme
of all construction works; and ii) Location plan of all construction works
|
Submitted and no approval is required.
|
|
3
|
Condition 2.12 of EP
|
Layout Plan for the proposed footpath at
Lin Ma Hang Road
|
Approved
by EPD on 25 April 2022
|
|
4
|
Condition 2.13 of EP
|
Contamination
Assessment Plan (CAP)
|
Approved
by EPD on 27 May 2019
|
|
5
|
Condition 2.14 of EP
|
Grassland
Reinstatement Plan
|
Approved
by EPD on 18 April 2023
|
|
6
|
Condition 2.15 to 2.17 of EP
|
Vegetation Survey Report and Vegetation Transplantation Proposal under
Contract 2
|
Approved by EPD on 15 June 2022
|
|
7
|
Condition 2.18 of EP
|
Woodland Compensation Plan (Rev.05)
Woodland Compensation Plan (Rev.09)
|
Approved by EPD on 30 Jun 2020
Approved by EPD on 4 May 2023
|
|
8
|
Condition 2.19 of EP
|
Monitoring and Survey Plan for
Golden-headed Cisticola Contract 2
|
Approved by EPD on 9 Nov 2022
|
|
9
|
Condition 2.21 – 2.22
of EP
|
Landscape & Visual
Mitigation and Tree Preservation Plan(s) Contract 2
|
Pending approval
|
|
10
|
Condition 2.23 of EP
|
Traffic Noise Mitigation Plan Contract 2
|
Pending approval
|
|
11
|
Condition 3.3 of the
EP
|
Baseline Monitoring Report (Air, Noise
and Water)
|
Approved by EPD on 25 October 2018
|
|
12
|
Condition 4.2 of the
EP
|
The Contract
Internet website
|
Internet website address has notified
EPD on 15 June 2018 and no approval is
required.
|
3
3.1.1
The EM&A requirements are set out in the Approved EM&A Manual.
Environmental issues such as air quality, construction noise, water quality and
ecology were identified as the key issues during the construction phase of the
Project.
3.1.2
A summary of construction phase EM&A
requirements are presented in the sub-sections below.
3.2.1
The EM&A impact monitoring shall cover the following environmental
aspect:
•
Air quality;
•
Construction noise;
•
Water quality;
•
Ecology; and
•
Landscape and visual
3.2.2
A summary of the monitoring parameters is presented in Table
3-1 below
Table 3-1 Summary
of EM&A Requirements
|
Environmental Issue
|
Parameters
|
|
Air Quality
|
Ÿ 1-hour
TSP;
Ÿ 24-hour
TSP
|
|
Noise
|
Ÿ Leq(30min) during normal working
hours.; and
Ÿ
Leq(15min) during the
construction works undertaken in Restricted Hours
|
|
Water Quality
|
In-situ Measurements
Ÿ Dissolved
Oxygen Concentration (mg/L) & Saturation (% );
Ÿ Temperature
(℃);
Ÿ Turbidity
(NTU);
Ÿ Salinity
(ppm)
Ÿ pH
unit;
Ÿ Water
depth (m); and
Ÿ Stream
Flow Velocity (m/sec).
|
|
Laboratory Analysis
Ÿ Suspended
Solids (mg/L)
|
|
Ecology
|
Ecologically sensitive habitats
(wetland habitats and non-wetland habitats)
|
3.3.1
According to
the Approved EM&A Manual of the Project – Site Formation and Associated Infrastructural Works for
Development of Columbarium, Crematorium and Related Facilities at Sandy Ridge
Cemetery, the designated monitoring
locations for air quality, noise, water quality and ecology under the monitoring programme, is shown in Appendix C.
3.3.2
Since the Project was divided
into three Works Contracts and all Contracts will be
commenced at different time, the
construction phase impact monitoring will only be performed at the
Contract-related monitoring stations upon commencement of each
Contract Works.
Air Quality
3.3.3
There were three (3) designated
air quality monitoring
stations recommended in the Approved EM&A Manual
Section 5.6.1.1. There was proposed
relocation of air quality monitoring location ASR-3 in October 2018 since the
landlord refused to set up the HVS at his premises and nearby Conservation Area
due to noise nuisance and Muk Wu Nga Yiu House No. 2A was proposed as alternative location ASR-3a. The
proposal dated on 9 November 2018 which verified by IEC was submitted to EPD
for approval. Based on rationale in Section 3.3.2, the Contract-related air quality monitoring location
for construction
phase were summarized in Table 3-2 and illustrated in Appendix C.
Table 3-2 Designated
Air Quality Monitoring Location under the Project
|
Location ID
|
Description in EM&A Manual
|
Location
|
Related
Work Contract
|
|
ASR-1
|
Village
House along Man Kam To Road
|
Sha Ling Village House No.6
|
Contract
1
|
|
ASR-2
|
Village House at San Uk Ling
|
San Uk
Ling Village House No.1
|
Contract
2
|
|
ASR-3
|
Village
House at Muk Wu Nga Yiu
|
Muk Wu Nga Yiu House No.28
|
Contract
2
|
|
ASR-3a (#)
|
Village
House at Muk Wu Nga Yiu
|
Muk Wu Nga Yiu House No.2A
|
Contract
2
|
Remark: (#) There was proposed relocation of air quality
monitoring location ASR-3 in October 2018. The
proposal dated on 9 November 2018 after verified by IEC was submitted to EPD
for approval.
3.3.4
If the designated monitoring
location is required to relocate, alternative monitoring location shall agree with IEC and seek for EPD approval
which shall meet the following criteria:
i)
Be at the site boundary or such locations
close to the major dust emission source;
ii)
Close to the sensitive receptors;
iii)
Take into account the prevailing meteorological conditions;
iv)
For monitoring location located in the vicinity of the ASRs, care
shall be taken to cause minimal disturbance to the occupants during monitoring.
v)
When positioning the HVS, the following points shall be noted:
a.
a horizontal platform with appropriate support to secure the
samples against gusty wind shall be provided;
b.
no two samplers shall be placed less than 2m apart;
c.
the distance between the HVS and an obstacle, such as buildings,
must be at least twice the height that the obstacle protrudes above the HVS;
d.
a minimum of 2 m separation from walls,
parapets and penthouses is required for HVS at the rooftop;
e.
a minimum of 2 m separation from any
supporting structure, measures horizontally is required;
f.
no furnace or incinerator flue is nearby;
g.
airflow around the sampler is unrestricted;
h.
the HVS is more than 20 m from the dripline;
i.
any wire fence and gate to protect the HVS, shall not cause any
obstruction during monitoring;
j.
permission must be obtained to set up the HVS and to obtain access
to the monitoring stations; and
k.
a secured supply of electricity is needed
to operate the HVS.
Construction
Noise
3.3.5
There were four (4) designated noise
monitoring locations recommended in the Approved EM&A
Manual Section 6.5.1.1. Based on
rationale in
Section 3.3.2, the
Contract-related noise quality monitoring location for construction
phase were summarized in Table 3-3 and illustrated in Appendix C.
Table 3-3 Designated Construction
Noise Monitoring Location under the Project
|
Location ID
|
Description in EM&A Manual
|
Location
|
Related
Work Contract
|
|
CN-1
|
Village house to the west of
Sha Ling Road
|
Village house to the west of
Sha Ling Road (free field condition)
|
Contract
1
|
|
CN-2
|
Village house to the north of Man Kam To
Road
|
Sha Ling
Village House No. 25 (free field condition)
|
Contract
1 & 3
|
|
CN-3
|
Village house near San Uk Ling
|
San Uk Ling
Village House No. 18 (free field condition)
|
Contract
2
|
|
CN-4
|
Village house of Muk Wu
|
Muk Wu Village House No. 267
(1m façade from the building)
|
Contract
2
|
Water Quality
3.3.6
There were four (4) water quality monitoring
locations recommended in the Approved EM&A
Manual Section 7.6.1.2. The locations and coordinates of water quality monitoring were listed in Table 3-4. Based on rationale in Section 3.3.2, the Contract-related water quality monitoring
location for construction phase were summarized in Table 3-4 and illustrated in Appendix C.
Table 3-4 Designated Water Quality
Monitoring Stations under the Project
|
Proposed Location ID
|
Co-ordinates
|
Description
|
Related
Work Contract
|
|
North
|
East
|
|
M1
|
843 431
|
831 308
|
Midstream
of Nam Hang Stream
|
Contract
2
|
|
M2
|
843 840
|
831 101
|
Downstream
of Nam Hang Stream
|
Contract
2
|
|
M3
|
843 509
|
830 040
|
Wetland
in the Conservation Area near Yuen Leng Chai
|
Contract
1
|
|
M4
|
843 997
|
831 783
|
Watercourse across Lin Ma
Hang Road, running from east of San Uk Ling to Man
Kam To Boundary Control Point
|
Contract
2
|
3.4.1
The requirements of impact monitoring were stipulated in Sections 5.8.1.1, 6.7.1.1 and
7.8.1.4 of the approved EM&A
Manual and presented as follows.
Air Quality
Monitoring
3.4.2
Monitoring frequency for air quality impact monitoring is as follows:
|
Ÿ 1-Hour TSP
|
3 sets of 1-hour TSP monitoring shall be carried
out once every six days during construction periods
|
|
Ÿ 24-Hour TSP
|
24-hour TSP monitoring shall be
carried out every six days during construction periods
|
Noise Monitoring
3.4.3
Noise impact monitoring shall be carried out once per week during construction
periods. The noise measurement for
the time period between 0700 and 1900 hours shall be measured in terms of Leq (30 minutes) or 6 sets of Leq (5mins).
Water Quality Monitoring
3.4.4
The monitoring frequency shall be 3 days per week during construction
phase and
the interval between two sets of monitoring shall not be less than 36 hours.
3.5.1
The
monitoring equipment using for the EM&A program as proposed by the ET shall
be verified by the IEC.
Air Quality
Monitoring
3.5.2
The 24-hour and 1-hour TSP levels shall be measured by following
the standard high volume sampling method as set out in the Title 40 of the Code of Federal Regulations, Chapter 1 (Part 50), Appendix B. If ET proposes to use a direct reading
dust meter to measure 1-hour TSP levels, it shall submit sufficient information
to IEC for approval.
3.5.3
The filter paper
of 24-hour TSP measurement shall be determined by HOKLAS accredited laboratory.
3.5.4
All equipment used by ET for air quality monitoring is listed in Table
3-5.
Table 3-5 Air
Quality Monitoring Equipment
|
Equipment
|
Model
|
|
24-hour TSP
|
|
High Volume Air
Sampler (HVAS)
|
TISCH High Volume Air Sampler, HVS Model
TE-5170
|
|
Calibration
Kit
|
TISCH Model TE-5025A
|
|
1-Hour TSP
|
|
Portable Dust Meter
|
Laser Dust
Monitor, Model AM510
/ Sibata LD-3 Laser Dust monitor
Particle Mass Profiler & Counter
|
Wind Data Monitoring Equipment
3.5.5
According to the approved EM&A Manual, wind data monitoring equipment
shall also be provided and set up for logging wind speed and wind direction
near the dust monitoring locations.
The equipment installation location shall be proposed by the ET and
agreed with the IEC. For
installation and operation of wind data monitoring equipment, the following
points shall be observed:
1)
The wind sensors should be installed 10 m above ground so that
they are clear of obstructions or turbulence caused by buildings.
2)
The wind data should be captured by a data logger. The data shall
be downloaded for analysis at least once a month.
3)
The wind data monitoring equipment should be re-calibrated at
least once every six months.
4)
Wind direction should be divided into 16 sectors of 22.5 degrees
each.
3.5.6
ET has liaised with the premises owners/ landlords to grant the permission
for the HVS installation. However, they rejected to set
up wind data
monitoring equipment installation in their premises.
3.5.7
Under this situation, the ET proposed to obtain representative
wind data from the Hong Kong Observatory Ta Kwu Ling
Weather Station. Ta Kwu Ling Station is located near the Project site which situated at the sea level above 15mPD and
the wind data
monitoring equipment is installed 10 m above the existing ground.
Noise Monitoring
3.5.8
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 before each noise monitoring event.
Noise measurements should not be made in fog, rain, wind with a steady
speed exceeding 5 m s-1 or wind with gusts exceeding 10 m s-1.
3.5.9
Noise monitoring equipment used for impact monitoring is listed in
Table
3-6.
Table 3-6 Noise
Monitoring Equipment
|
Equipment
|
Model
|
|
Integrating Sound Level Meter
|
Rion NL-52 Sound Level Meter
|
|
Calibrator
|
Rion NC-75
Acoustical Calibrator
|
|
Portable Wind Speed Indicator
|
Testo
Anemometer
|
3.5.10
Sound level meters listed above comply with the International Electrotechnical Commission
Publications 651:1979 (Type 1) and
804:1985 (Type 1) specifications, as recommended in TM issued under the
NCO.
Water Quality
Monitoring
3.5.11 Water
quality parameters include dissolved oxygen, water
temperature & depth, turbidity, salinity, pH and stream flow velocity shall
be measured in-situ, and suspended solids shall be analyzed by a HOKLAS-accredited
testing laboratory.
Dissolved Oxygen and Temperature Measurement
3.5.12 The dissolved oxygen (DO) measuring
instruments should be portable and weatherproof. The equipment should also
complete with cable and sensor, and DC power source. It should be capable of
measuring:
• A DO level in the range of 0 –
20 mg/L and 0 – 200% saturation; and
• A
temperature of 0 – 45 degree Celsius.
3.5.13
The equipment should have a
membrane electrode with automatic temperature compensation complete with a
cable.
3.5.14
Should salinity compensation not
be built-in to the DO equipment, in-situ salinity should be measured to
calibrate the DO measuring instruments prior to each measurement.
Turbidity Measurement
3.5.15
The turbidity measuring instruments should be a portable and
weatherproof with DC power source.
It should have a photoelectric sensor capable of measuring turbidity
level between 0–1000 NTU (for example, Hach model 2100Q or an approved similar
instrument).
Salinity Measurement
3.5.16
A portable salinometer capable of measuring
salinity in the range of 0–40 parts per thousand (ppt) should be provided for
measuring salinity of the water at each monitoring location.
pH Measurement
3.5.17
A portable pH meter capable of measuring a
range between 0.0 and 14.0 should be provided to measure pH under the specified
conditions accordingly to the APHA Standard Methods.
Water Depth Measurement
3.5.18
A portable, battery-operated echo sounder or an approved similar
instrument should be used for water depths determination at each designated
monitoring station.
Stream Flow Velocity Equipment
3.5.19 Since the EM&A Manuals do
not specified instrument to use stream flow velocity measurement, the
monitoring of stream flow velocity is therefore proposed to be conducted by
using a flow probe which is a digital water velocity meter.
Water Sampling Equipment
3.5.20
A water sampler is required for suspended solid (SS) monitoring. A water sampler e.g. Kahlsico
Water Sampler, which is a transparent PVC cylinder with capacity not less than
2 litres, will be used for water sampling if water
depth over than 0.5m.
3.5.21
For sampling from very shallow water depths e.g. <0.5 m, water
sample will be collected from water surface below 100mm using plastic bottle to avoid
inclusion of bottom sediment or humus.
Moreover, Teflon/stainless steel bailer or self-made sampling buckets
maybe used for water sampling. The
equipment used for sampling will be depended the sampling location and depth
situations.
Sample Containers and Storage
3.5.22
Water samples for suspended solid should be stored in high density
polythene bottles with no preservative added, packed in ice (cooled to 4°C without
being frozen) and delivered to the laboratory within 24 hours of collection and
be analyzed as soon as possible after collection.
3.5.23
Analysis of suspended solids should be carried out in a HOKLAS or other
accredited laboratory. Water samples of about 1L should be collected at the
monitoring stations for carrying out the laboratory suspended solids
determination. The SS determination
work should start within 24 hours after collection of the water samples. The SS
analyses should follow the APHA Standard
Methods 2540D with Limit of Reporting of 2 mg/L.
3.5.24
Details
of the equipment used for water quality monitoring are listed in Table 3-7 below.
Table 3-7 Water
Quality Monitoring Equipment
|
Equipment
|
Model
|
|
Water Depth Detector
|
Tape measures
|
|
Water Sampler
|
A
2-litre transparent PVC cylinder with latex cups at both ends or
Teflon/stainless steel bailer or self-made sampling bucket
|
|
Thermometer & DO meter
|
YSI Professional DSS
|
|
pH meter
|
YSI Professional DSS
|
|
Turbidimeter
|
YSI Professional DSS
|
|
Salinometer
|
YSI Professional DSS
|
|
Stream Flow Velocity
|
FP211 Global Flow Probe
|
|
Sample Container
|
High density polythene
bottles (provided by laboratory)
|
|
Storage Container
|
‘Willow’ 33-litter plastic
cool box with Ice pad
|
3.5.25
Furthermore, Suspended
Solids (SS) analysis was carried out by ALS Technichem (HK) Pty Ltd. Which is one a local HOKLAS-accredited
laboratory
3.6.1
The HVAS is operated and calibrated on a regular basis in
accordance with the manufacturer’s instruction using Tisch Calibration Kit
Model TE-5025A. Calibration would
carry out at fortnightly
interval. The calibration data are properly
documented and the records are maintained by ET for future reference. Furthermore, Tisch Calibration Kit will be calibrated
by the manufacturer in yearly basis.
3.6.2
The 1-hour TSP meter calibrated by a local HOKLAS-accredited
laboratory would be undertaken in yearly basis. Zero response of the equipment was
checked before and after each monitoring event.
3.6.3
The sound level meter and acoustic calibrator are
calibrated and certified by a laboratory accredited under HOKLAS or any other
international accreditation scheme at yearly basis.
3.6.4
The multi-parameter Water Quality Monitoring
System is calibrated by HOKLAS accredited laboratory of three month intervals.
3.6.5
All updated calibration certificates of
the monitoring equipment used for the impact monitoring program in this
Reporting Month are attached in Appendix D.
3.7.1
The
impact monitoring data are handled by the ET’s systematic data recording and
management, which complies with in-house Quality Management System. Standard
Field Data Sheets (FDS) are used in the impact monitoring program.
3.7.2
The
monitoring data recorded in the equipment e.g. 1-hour TSP meter, noise meter
and Multi-parameter Water
Quality Monitoring System are downloaded
directly from the equipment at the end of each monitoring day. The downloaded monitoring data are input
into a computerized database properly maintained by the ET. The laboratory results are input
directly into the computerized database and QA/QC checked by personnel other
than those who input the data. For
monitoring activities require laboratory analysis, the local laboratory follows
the QA/QC requirements as set out under the HOKLAS scheme for all laboratory
testing.
3.8.1
The baseline monitoring results form the basis for
determining the environmental acceptance criteria for the impact monitoring. The air quality, construction noise and
water quality criteria, namely Action and Limit levels were established according to
Approved EM&A Manual, and they are listed in Tables 3-8, 3-9 and
3-10 below.
Table 3-8 Action and Limit Levels for Air
Quality Monitoring
|
Monitoring Station
|
Action Level (mg /m3)
|
Limit Level (mg/m3)
|
|
1-hour TSP
|
24-hour TSP
|
1-hour TSP
|
24-hour TSP
|
|
ASR-1
|
331
|
181
|
500
|
260
|
|
ASR-2
|
316
|
165
|
500
|
260
|
|
ASR-3
|
307
|
160
|
500
|
260
|
Table 3-9 Action
and Limit Levels for Construction Noise
|
Monitoring Location
|
Action Level
|
Limit Level in dB(A)
|
|
Time Period: 0700-1900 hours
on normal weekdays
|
|
CN-1,CN-2, CN-3, CN-4
|
When
one or more documented complaints are received
|
75 dB(A)
|
Note: * Reduces to 70 dB(A) for schools and
65 dB(A) during the school examination periods.
Table 3-10 Action and Limit
Levels for Water Quality
|
Parameter
|
Performance criteria
|
Monitoring Location
|
|
M1
|
M2
|
M3
|
M4
|
|
DO (mg/L)
|
Action Level
|
3.03
|
4.99
|
4.58
|
3.62
|
|
Limit Level
|
2.97
|
4.90
|
4.49
|
3.52
|
|
Turbidity (NTU)
|
Action Level
|
7.1
|
39.7
|
5.6
|
5.4
|
|
Limit Level
|
7.6
|
42.2
|
5.9
|
5.9
|
|
SS (mg/L)
|
Action Level
|
8.5
|
29.0
|
9.3
|
4.8
|
|
Limit Level
|
10.1
|
31.0
|
9.5
|
5.0
|
|
Notes:
•
For DO, non-compliance of the water
quality limits occurs when monitoring result is lower than the limits
•
For turbidity and SS, non-compliance of
the water quality limits occurs when monitoring result is higher than the
limits.
|
3.8.2
Should
non-compliance of the environmental quality criteria occurs, remedial actions will
be triggered according to the Event and Action Plan enclosed in Appendix E.
4
4.1.1
Since all works under Contract 1 were completed and handover to relevant
government departments, as instructed by CEDD and Project Consultant, the
construction phase monitoring under Contract 1 have been put on hold after 31 October 2023. For Contract 2, in view of completion of
construction works, as
instructed by CEDD and Project Consultant, construction phase monitoring was put on hold and 15 November 2023. Impact monitoring schedule provided to all
relevant parties was shown in Appendix F.
4.1.2
In this Reporting Month, there were 3 sessions of 24-hour TSP and 9 sessions of 1-hour TSP undertaken
at designated stations ASR-2 and ASR3 for air quality monitoring. The air quality
monitoring results are
summarized in Tables 4-1 to 4-2.
The database of 24-hour TSP is shown in Appendix
G and the graphical
plots of monitoring result are shown in Appendix
H.
Table
4-1 Summary
of Air
Quality
Monitoring Results at ASR-2 under Contract 2
|
Date
|
24-hour
TSP (mg/m3)
|
1-hour
TSP (mg/m3)
|
|
Date
|
Start Time
|
1st hour
measured
|
2nd hour
measured
|
3rd hour
measured
|
|
1 Nov 23
|
61
|
2-Nov-23
|
9:12
|
58
|
53
|
47
|
|
7 Nov 23
|
74
|
8-Nov-23
|
9:44
|
29
|
24
|
28
|
|
13 Nov 23
|
46
|
14-Nov-23
|
9:19
|
56
|
60
|
37
|
|
Average
(Range)
|
60
(46
– 74)
|
Average
(Range)
|
44
(24 –
60)
|
Table
4-2 Summary
of Air
Quality
Monitoring Results at ASR-3a under Contract 2
|
Date
|
24-hour
TSP (mg/m3)
|
1-hour
TSP (mg/m3)
|
|
Date
|
Start Time
|
1st hour
measured
|
2nd hour
measured
|
3rd hour
measured
|
|
1 Nov 23
|
44
|
2-Nov-23
|
9:20
|
22
|
21
|
17
|
|
7 Nov 23
|
40
|
8-Nov-23
|
9:49
|
25
|
28
|
22
|
|
13 Nov 23
|
51
|
14-Nov-23
|
9:23
|
29
|
21
|
28
|
|
Average
(Range)
|
45
(40
– 51)
|
Average
(Range)
|
24
(17 –
29)
|
4.2.1
As
shown in Tables 4-1 to
4-2, the monitoring results of 24-hour and 1-hour TSP monitoring in the Reporting Month were below the Action/ Limit Level.
No Notification of Exceedance (NOE) of air quality monitoring criteria was issued and therefore corrective action was not required. The
meteorological data during the impact monitoring days are summarized in Appendix I.
5
5.1.1
Since all works under Contract 1 were completed and handover to
relevant government departments, as instructed by CEDD and Project Consultant, the
construction phase monitoring under Contract 1 have been put on hold after 31 October 2023. For Contract 2, om
view of completion of construction works, as instructed by CEDD and Project
Consultant, construction phase monitoring
was put on hold and 15 November 2023. Impact monitoring schedule provided to all relevant parties was shown in Appendix F.
5.1.2
In
this Reporting
Month, 3 sessions of noise monitoring were undertaken at designated noise
monitoring locations CN-3 and CN-4.
The sound level were
set in a free field situation for CN2 and CN3 and therefore a façade correction of +3dB(A)
has been added according to acoustical principles and EPD guidelines. The monitoring result of noise monitoring is show in Tables 5-1 and the graphical plots are shown in Appendix
H.
Table
5-2 Summary of Construction Noise Monitoring Results under Contract 2
|
Construction
Noise Level (Leq30min), dB(A)
|
|
Date
|
Start Time
|
CN3 (*)
|
Start Time
|
CN4
|
|
2 Nov 23
|
9:21
|
63
|
10:00
|
62
|
|
8 Nov 23
|
14:29
|
61
|
13:48
|
70
|
|
14 Nov 23
|
10:33
|
63
|
11:05
|
63
|
|
Limit Level
|
75 dB(A)
|
(*) A façade correction of +3dB(A) has
been added according to acoustical principles and EPD guidelines.
5.1.3
Prior and after noise monitoring, the accuracy of the sound level meter
has been checked by
an acoustic calibrator to ensure the measurement within acceptance
range of ±0.5dB. Moreover, wind speed checked by portable wind speed meter has been performed before noise
monitoring. No noise
measurement was performed in fog, rain, wind with a steady speed exceeding 5 m
s-1 or wind with gusts exceeding 10 m s-1.
5.2.1
As
shown in Tables 5-1, no noise complaint (which triggered Action
Level) and Limit Level exceedance for noise monitoring exceedance was recorded in the Reporting Month.
6.
Water Quality
6
6.1.1
Since all works under Contract 1 were completed and handover to relevant
government departments, as instructed by CEDD and Project Consultant, the
construction phase monitoring under Contract 1 have
been put on hold after 31 October 2023.
For Contract 2, in view of completion of construction works, as instructed by CEDD and Project Consultant
