1.1.1
The existing Shek Wu Hui Sewage Treatment Works (hereafter referred as “SWHSTW”) with
secondary level treatment to sewage collected from Sheung Shui, Fanling and
adjacent areas is operated and maintained by Drainage Services Department (hereafter referred as “DSD”). Based on the preliminary design of the
Project, the scope of works for the Project comprises the following major
components:
(a)
Demolition of the existing Inlet Works and construction
of the new Inlet Works, including inlet pumping station, screening and degritting facilities;
(b)
Demolition of 4 existing circular Primary Sedimentation
Tanks (PSTs) and construction of new rectangular PSTs;
(c)
Construction of new pre-membrane screens;
(d)
Modification of existing Bioreactor (BR) 1 and 2 to suit
the proposed membrane bioreactor (MBR) process;
(e)
Construction of a new standby Bioreactor;
(f)
Demolition of 4 existing circular Final Sedimentation
Tanks (FSTs) and construction of new Membrane Tanks and Membrane Facility
Building;
(g)
Reconstruction of sludge treatment facilities, including
thickening, anaerobic digestion, biogas handling, sludge holding and dewatering
facilities; and
(h)
Other ancillary works.
1.1.2
According to the Project implementation programme, the
construction of most of the above proposed works (hereinafter referred to as
“Main Works”) will be commencement in 2016 and completion in 2022. Furthermore, Advance Works as part of
the above proposed works will carry out before Main Works commencement. The Advance Works will be commencement
in third quarter of 2015 and comprise the following major components:
(a)
Modification of BR1, through upgrading of electrical and
mechanical (E&M) equipment and minor civil works, to suit the proposed MBR
process;
(b)
Demolition of FSTs 1 and 2 and construction of Membrane
Tanks and the first phase of Membrane Facility Building; and
(c)
Tree felling and transplanting, to facilitate timely
construction of the new Inlet Works during the implementation of Main Works
(under review).
1.1.3
The general layout of Advance Works and Main Works of
SWHSTW Further Expansion Phase 1A show in Appendix A. Subsequent to Further Expansion Phase
1A, the SWHSTW will be further expanded under separate projects (namely Further
Expansion Phase 1B and Phase 2).
1.1.4
In July 2015, Tsun Yip Waterworks Construction Co Ltd (hereinafter referred as “Tsun Yip” or “the
Contractor”) has awarded the DSD
Contract No. DC/2013/09 – Advance Works for Shek Wu Hui Sewage Treatment Works –
Further Expansion Phase 1A and Sewerage Works at Ping Che
Road (hereinafter
referred as “the Contract”). The
Contract is the Advance Works for Shek Wu Hui Sewage Treatment
Works as part of SWHSTW Further
Expansion which is a
Designated Project under Environmental Permit number FEP-01/474/2013 (hereinafter referred as “the FEP-01/474/2013” or “the EP”).
1.1.5
The works under the Contract at Shek Wu Hui Sewage Treatment Works
will be included the conversion of one existing bioreactor and two existing
final sedimentation tanks into one membrane bioreactor. Moreover, construction of about 1.5 kilometres length of sewers at Ping Che
Road and other ancillary works will be undertaken. The works of Contract are scheduled to be
conduct about 25 months. Layout plan of the Contract is shown in Appendix
B.
1.1.6
Action-United
Environmental Services & Consulting (hereinafter
referred as “AUES”) was appointed by the Contractor as an Environmental Team
(hereinafter referred as “the ET”) to implement the relevant EM&A
program in accordance with the Updated
EM&A Manual, as well as the associated duties.
1.1.7
As part of the EM&A program, baseline
monitoring is required to determine the ambient environmental conditions. Hence baseline monitoring including air
quality and noise were carried out between 28 August 2015 and 12
September 2015 at the proposed locations before construction work
commencement. The “Baseline Monitoring Report (TCS00757/15/600/R0014 Version 2)” had submitted to EPD by the DSD
before commencement of major construction works and approved by the IEC on 24 September
2015. Further to Tsun Yip’s instructions, the EM&A program was commenced on 1 October
2015 and
the monitoring schedule had
been issued to relevant parties on 29 September 2015.
1.1.8
This
is the 22nd
Monthly EM&A Report presenting the monitoring results and
inspection findings for the reporting period from 1 to 31 July 2017.
1.2.1
The Monthly
Environmental Monitoring and Audit (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 Monitoring
Methodology
Section 5 Impact
Monitoring Results
Section 6 Waste
Management
Section 7 Site
Inspections
Section 8 Environmental
Complaints and Non-Compliance
Section 9 Implementation
Statues of Mitigation Measures
Section 10 Conclusions
and Recommendation
2.1.1
Organization
structure and contact details of relevant parties with respect to on-site
environmental management are shown in Appendix C.
2.1.2
3-Month
Rolling Programme of the Project is enclosed in Appendix D and the major construction
activities undertaken in this Reporting Month are illustrated in Appendix B and listed below:-
Ÿ Dismantle & Erection of
formworks, steel fixing works, concreting, and erection of temporary metal
falsework (At membrane facility building)
Ÿ Excavation, pipe laying of CLP
cable duct
Ÿ Pipe installation for DN1600
BR1 Effluent Pipe (Near Bioreactor No1)
Ÿ Erection of formwork of wall of
pretreatment screen chamber (Near Bioreactor No.1)
Ÿ Installation of FRP
Baffle Wall and Walkway (At Bioreactor No.1)
Excavation, Installation of sheet pile , Pipelaying
for DN1400 RAS Pipe (Near Bioreactor No1)
Ÿ Modification of existing signal
cable of wifi station
2.3
Summary of Environmental Submissions
2.1.3
Summary of the relevant permits, licences, and/or notifications on environmental protection
for this Project in this Reporting Period is presented in Table 2-1.
Table 2-1 Status of Environmental Licenses and Permits
|
Item
|
Description
|
License/Permit Status
|
|
1
|
Air Pollution
Control (Construction Dust) Regulation
|
Notified
EPD on 30 July 2015
|
|
2
|
Chemical waste
Producer Registration
(WPN: 5213-624-T3148-04)
|
Application
date: 19/08/2015
Date
approved: 18/9/2015
|
|
3
|
Water Pollution
Control Ordinance
(Discharge
License: WT00022503-2015)
|
Application
date: 19/08/2015
Date
approved: 18/9/2015
|
|
4
|
Billing Account
for Disposal of Construction Waste (Account Number: 7022898)
|
Granted
on 02/09/2015
|
|
|
2.1.4
In
accordance with the Further EP No. FEP-01/474/2013 Condition 2.3, an Updated
Environmental Monitoring and Audit (EM&A) Manual (TCS00757/15/600/R0012v3)
which certified by the Environmental Team (ET) Leader and verified by the
Independent Environmental Checker (IEC), has submitted to DSD and EPD
endorsement.
2.1.5
Baseline
Monitoring Report (TCS00757/15/600/R0014v2) as certified by the ETL and
verified by the IEC was submitted to the EPD on 24 September 2015 for
endorsement.
3.1.1
The Environmental Monitoring and Audit requirements are set out in
the Updated EM&A manual. Environmental issues such as air quality and
construction noise were identified as the key issues during the construction
phase of Advance Works of the Project.
3.1.2
A summary of EM&A programme of construction phase are
presented in the sub-sections below.
3.2.1
The EM&A programme of construction phase shall cover the
following environmental issues:
•
Air quality; and
•
Construction noise
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 by Real-Time
Portable Dust Meter; and
Ÿ 24-hour TSP by High Volume
Air Sampler.
|
|
Construction
Noise
|
Ÿ Leq(30min) during normal working hours;
and
Ÿ
Leq(15min) for the construction works
undertaken in Restricted Hours, if necessary.
|
3.3.1
According to the Updated
EM&A Manual of Advance Works which submitted
to EPD on 25 August 2015, three air quality sensitive receivers and two construction
noise sensitive receivers are proposed to monitor the environmental performance
of the Contract. The proposed monitoring locations are summarized in Table
3-2 and
shown in Appendix E.
Table 3-2 Proposed
Air Quality and Construction Noise Monitoring Locations
|
Aspect
|
Station ID
|
Location
|
Parameter
|
|
Air Quality
|
AM1
|
No. 31 Wai Loi Tsuen
|
1- hour and 24- hour TSP
|
|
AM2
|
Fu Tei Au
|
1- hour
|
|
AM2a
|
RE’s Site Office
|
24- hour TSP
|
|
Noise
|
NM1
|
No. 31 Wai Loi Tsuen
|
Leq(30min)
|
|
NM2
|
Fu Tei Au
|
Leq(30min)
|
3.4.1
The requirements of baseline monitoring
are stipulated in Sections 2.1.7 and 3.2.5
of the Updated EM&A Manual
and presented as follows.
Air Quality Monitoring
3.4.2
Monitoring frequency for air quality
baseline monitoring is as follows:
|
Ÿ 1-Hour TSP
|
3 sets of 1-hour TSP monitoring shall be
carried out once in every six days.
|
|
Ÿ 24-Hour TSP
|
24-hour shall be carried out once in every six
days.
|
Noise Monitoring
3.4.3
Construction
noise monitoring should be carried out at the designated monitoring station
when there are Project-related construction activities being undertaken within
a radius of 300m from the monitoring stations. The monitoring frequency should
depend on the scale of the construction activities. An initial guide on the monitoring is to
obtain one set of 30-minute measurement at each station between 0700 and 1900
hours on normal weekdays at a frequency of once a week when construction
activities are underway.
3.4.4
If
construction works are extended to include works during the hours of 1900 -
0700, additional weekly impact monitoring shall be carried out during evening
and night-time works. Applicable permits under NCO shall be obtained by the
Contractor.
Air Quality Monitoring
3.5.1
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 the ET proposes to use a direct
reading dust meter to measure 1-hour TSP levels, it shall submit sufficient
information to the IEC to approve.
3.5.2
The filter paper
of 24-hour TSP measurement shall be determined by HOKLAS accredited laboratory.
3.5.3
All equipment as used air quality monitoring is listed in Table
3-3.
Table 3-3 Air
Quality Monitoring Equipment
|
Equipment
|
Model
|
|
24-Hr TSP
|
|
High
Volume Air Sampler
|
TISCH High Volume Air Sampler, HVS Model
TE-5170
|
|
Calibration
Kit
|
TISCH Model TE-5025A
|
|
1-Hour TSP
|
|
Portable Dust Meter
|
Sibata LD-3 Laser Dust monitor
Particle Mass Profiler & Counter
|
Wind Data Monitoring Equipment
3.5.4
According to the Updated EM&A Manual
Sections 2.1.3.8, alternative methods to obtain representative wind data was
proposed by the ET. Meteorological
information as extracted from “the Hong Kong Observatory Ta Kwu Ling Station”
is alternative method to obtain representative wind data. For Ta Kwu Ling Station, it is located
nearby the Project site. Moreover,
this station is situated the sea level above 15mPD. The station’s wind data monitoring equipment
is set above the existing ground ten meters in compliance with the general
setting up requirement.
Furthermore, this station can also provide the humidity, rainfall, and
air pressure and temperature etc. meteorological information. In a lot of Hong Kong development
projects, weather information extracted from Hong Kong Observatory is a common
alternative method if installation of weather station is not allowed.
Noise Monitoring
3.5.5
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 m s-1.
3.5.6
Noise monitoring equipment to be used for impact monitoring is
listed in Table 3-4.
Table 3-4 Construction
Noise Monitoring Equipment
|
Equipment
|
Model
|
|
Integrating Sound Level Meter
|
Rion NL-52
|
|
Calibrator
|
NC
- 73
|
|
Portable Wind Speed Indicator
|
Testo Anemometer
|
3.5.7
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. The acoustic
calibrator and sound level meter to be used in the baseline monitoring will be
calibrated yearly.
3.6.1
According
to the baseline monitoring results and the Updated EM&A Manual, the air quality
and construction noise criteria were set up, namely Action and Limit levels are
listed in Tables 3-5 & 3-6 as below.
Table 3-5 Action and Limit Levels for 24-Hr TSP and 1-Hr TSP Air Quality, μg m-3
|
Monitoring
Stations
|
Action
Level (mg/m3)
|
Limit
Level (mg/m3)
|
|
1-hour
|
24-hour
|
1-hour
|
24-hour
|
|
AM1
|
286
|
147
|
500
|
260
|
|
AM2
|
276
|
NA
|
500
|
NA
|
|
AM2a
|
NA
|
155
|
NA
|
260
|
Table 3-6 Action
and Limit Levels for Construction Noise
|
Monitoring Stations
|
Action Level
|
Limit Level in dB(A)
|
|
Time Period: 0700-1900 hours on normal weekdays
|
|
NM1 and NM2
|
When one documented complaint
is received
|
>
75* dB(A)
|
Note: (*) Reduces
to 70 dB(A) for schools and 65 dB(A) during the school
examination periods.
3.7.1
If non-compliance or exceedance of the Action/Limit Levels is
occurred, actions shall be taken in accordance with the Event Action Plan in Appendix
F.
Monitoring
Location
4.1.1
The detailed information of air quality monitoring stations referred
to Table
3-2 and the graphical plot of monitoring locations shown in Appendix
E in this report.
Monitoring Equipment
4.1.2
All the monitoring equipment to be used in the EM&A program as
listed in Table 3-3 has been agreed with the IEC.
Monitoring Procedures
1-hour TSP
4.1.3
The 1-hour TSP monitor, a Sibata LD-3
Laser Dust monitor Particle Mass Profiler & Counter was used for baseline
monitoring, which is a portable, battery-operated laser photometer. The 1-hour
TSP meter provides a real time 1-hour TSP measurement based on 900
light scattering. The 1-hour TSP monitor consisted of the following:
a.
A pump to draw sample aerosol through the optic chamber where TSP
is measured;
b.
A sheath air system to isolate the aerosol in the chamber to keep
the optics clean for maximum reliability; and
c.
A built-in data logger compatible with Windows based program to
facilitate data collection, analysis and reporting.
4.1.4
The 1-hour TSP meter used is within the valid period, calibrated
by the manufacturer prior to purchasing. Zero response of the instrument was
checked before and after each monitoring event. Operation of the 1-hour TSP meter was
follow manufacturer’s Operation and Service Manual. A valid calibration certificate is
attached in Appendix G.
24-hour TSP
4.1.5
The equipment used for 24-hour TSP measurement is a Tisch Environmental, Inc. Model TE-5170 TSP high volume air
sampling system, which complied with EPA Code of Federal Regulation, Appendix B to Part 50. The High Volume Air Sampler
(HVS) consists of the following:
a.
An anodized aluminum shelter;
b.
A 8”x10” stainless steel filter holder;
c.
A blower motor assembly;
d.
A continuous flow/pressure recorder;
e.
A motor speed-voltage control/elapsed time indicator;
f.
A 7-day mechanical timer, and
g.
A power supply of 220v/50 hz
4.1.6
Prior to 24-hour TSP monitoring, the HVS was calibrated in
accordance with the manufacturer’s instruction using the NIST-certified
standard calibrator (Tisch Calibration Kit Model
TE-5028A). The 24-hour TSP
Monitoring using the HVS was also processed in accordance with the
manufacturer’s Operations Manual. A
valid calibration certificate of the calibration kit with the certificate of
HVS calibrated is attached in Appendix G.
4.1.7
24-hour TSP was collected by the ET on filters of HVS and
quantified by a local HOKLAS accredited laboratory, ALS Technichem
(HK) Pty Ltd (ALS), upon receipt of the samples. The ET keeps all the sampled 24-hour TSP
filters in normal air conditioned room conditions, i.e. 70% HR (Relative
Humidity) and 25oC, for six months prior to disposal.
Monitoring
Location
4.2.1
The detailed information of construction noise monitoring stations
referred to Table 3-2 and the graphical plot of monitoring locations shown
in Appendix
E in this report.
Monitoring Equipment
4.2.2
All the monitoring equipment to be used in the EM&A program as
listed in Table 3-3 has been agreed with the IEC.
4.2.3
Sound level meter listed in Table 3-4 is complied with the
International Electrotechnical Commission
Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications, as
recommended in Technical Memorandum (TM) issued under the Noise Control
Ordinance (NCO). A valid of
calibration certificates including sound level meter and an acoustic were shown
in Appendix
G.
Monitoring Procedures
4.2.4
The noise measurement was performed with the meter set to FAST
response and on the A-weighted equivalent continuous sound pressure level (Leq). Leq(30min)
in six consecutive Leq(5 min) measurements were used
as the monitoring parameter throughout the baseline monitoring period.
4.2.5
During the monitoring, the sound level meter was mounted on a
tripod at a height of about 1.2 m and placed at the monitoring locations and
oriented such that the microphone was pointed to the site with the microphone
facing perpendicular to the line of sight. The windshield was fitted for the
measurement. For construction
noise monitoring, all monitoring stations were conducted 1 m from the exterior of the
building façade.
4.2.6
Prior to noise measurement, the accuracy of the sound level meter
was checked using an acoustic calibrator generating a known sound pressure
level at a known frequency. The
calibration level from before and after the noise measurement agrees to within
1.0dB.
4.2.7
During the noise measurement, a portable wind speed meter was used
to check wind speed (m/s). For impact
noise monitoring, no wind speed was exceeding 5m/s or gusts exceeding 10m/s. Also, noise measurement in time was no
fog and rain.
4.3.1
The monitoring data were handled by the ET’s in-house data recording and
management system.
4.3.2
The monitoring data recorded in the equipment were downloaded
directly from the equipment at the end of each monitoring day. The downloaded monitoring data were
input into a computerized database properly maintained by the ET. The laboratory results were input
directly into the computerized database and checked by personnel other than
those who input the data.
4.3.3
For monitoring parameters that require laboratory analysis, the
local laboratory shall follow the QA/QC requirements as set out under the
HOKLAS scheme for the relevant laboratory tests.
5.1.1
Air quality and construction noise monitoring scheduled in the Reporting
Period is enclosed in Appendix H and the monitoring
results are shown in the following sub-sections.
5.2.1
The results for 24-hour and 1-hour TSP are summarized in Tables
5-1 to 5-2. The 24-hour TSP
data are shown in Appendix I and graph plots including 1-hour TSP and 24-hour TSP
are shown in Appendix J.
Table 5-1 Summary
of 1-Hour TSP Monitoring Results, mg/m3
|
Date
|
AM1
|
AM2
|
|
Start Time
|
1st Meas.
|
2nd Meas.
|
3rd Meas.
|
Start Time
|
1st Meas.
|
2nd Meas.
|
3rd Meas.
|
|
6-Jul-17
|
9:19
|
49
|
52
|
55
|
13:29
|
57
|
60
|
64
|
|
12-Jul-17
|
10:01
|
51
|
59
|
57
|
13:24
|
66
|
63
|
61
|
|
18-Jul-17
|
9:19
|
31
|
35
|
45
|
13:28
|
47
|
46
|
43
|
|
24-Jul-17
|
9:28
|
56
|
55
|
59
|
13:29
|
68
|
63
|
53
|
|
29-Jul-17
|
9:21
|
67
|
72
|
74
|
9:41
|
66
|
77
|
79
|
|
Average
(Range)
|
54
(31 - 74)
|
61
(43 - 79)
|
Table 5-2 Summary
of 24-hour TSP Monitoring Results, mg/m3
|
Date
|
AM1
|
AM2a
|
|
3-Jul-17
|
35
|
21
|
|
8-Jul-17
|
24
|
31
|
|
14-Jul-17
|
29
|
21
|
|
20-Jul-17
|
46
|
21
|
|
26-Jul-17
|
19
|
25
|
|
Average (Range)
|
30
(19 – 46)
|
24
(21 – 31)
|
5.2.2
As shown in Tables 5-1 and 5-2, the 24-hour and
1-hour TSP monitoring results were below the Action/ Limit Level. No Notification of Exceedances (NOE) of
air quality criteria or corrective action was therefore required.
5.2.3
The meteorological data during the Reporting Month is summarized
in Appendix
K.
5.2.4
Construction dust assessment for short term impact was undertaken
in the EIA study. In view of the
current contract, monitoring locations AM1 and AM2a are not an ASR during the
EIA study and therefore no prediction was made. For 1-hour TSP monitoring location AM2,
it is very near the assessment point FLN-E13 in the EIA. According to the EIA prediction, the
predicted result for Tier 2 in assessment year 2018 is 91.0μg/m3
for 1-hour TSP and the cumulative 1-hour
concentrations would comply with the respective criteria and adverse short-term
construction dust impact is not anticipated. It is concluded that the overall
1-hour TSP monitoring result in the Reporting Period is comparable to the EIA
prediction.
5.3.1
In the Reporting Period, a total of 8 event noise measurements were carried out at the two designated
locations. During construction
noise monitoring, the sound level meter was set in 1m from the exterior of the
building façade. Therefore, no
façade correction (+3dB(A)) is added according to
acoustical principles and EPD guidelines.
The construction noise monitoring results at the designated locations
are summarized in Table 5-3. The
detailed noise monitoring data are presented in Appendix I and the
relevant graphical plots are shown in Appendix J.
Table 5-3 Summary of Construction
Noise Monitoring Results, dB(A)
|
Date
|
NM1
|
NM2
|
|
Time
of Measurement
|
(Leq30min)
|
Time
of Measurement
|
(Leq30min)
|
|
6-Jul-17
|
9:28
|
59
|
13:33
|
51
|
|
12-Jul-17
|
10:13
|
58
|
13:29
|
50
|
|
18-Jul-17
|
9:38
|
58
|
13:34
|
50
|
|
24-Jul-17
|
9:36
|
57
|
13:37
|
48
|
|
Limit Level
|
75 dB(A)
|
5.3.2
As shown in Table 5-3, the noise
level measured at the designated monitoring locations are well below 75dB(A).
Furthermore, there was no noise complaints
(Action Level exceedance) received by the RE, Contractors or DSD in the
Reporting Period. Therefore, no
Action or Limit Level exceedance was triggered and no corrective action was
required.
6.1.1
Waste management was carried out by an on-site Environmental
Officer or an Environmental Supervisor from time to time.
6.2.1
All types of waste arising from the construction work are classified
into the following:
l Construction & Demolition
(C&D) Material;
l Chemical Waste;
l General Refuse; and
l Excavated Soil.
6.2.2
The quantities of waste for disposal in this Reporting Period are
summarized in Tables 6-1 and 6-2 and the Monthly Summary Waste
Flow Table is shown in Appendix L. Whenever possible, materials were reused
on-site as far as practicable.
Table 6-1 Summary
of Quantities of Inert C&D Materials for the Project
|
Type
of Waste
|
Quantity
|
Disposal Location
|
|
Prior
Months
|
Reporting Month
|
Cumulated
|
|
Total
C&D Materials (Inert) (in '000m3)
|
18.052
|
0.344
|
18.396
|
--
|
|
Hard
Rock and Large Broken Concrete (Inert) (in ‘000m3)
|
1.475
|
0
|
1.475
|
--
|
|
Reused
in this Project (Inert) (in '000 m3)
|
2.572
|
0.1
|
2.672
|
--
|
|
Reused
in other Projects (Inert) (in '000 m3)
|
2.228
|
0
|
2.228
|
--
|
|
Disposal
as Public Fill (Inert) (in '000 m3)
|
11.777
|
0.244
|
12.021
|
Tuen Mun 38
|
Table 6-2 Summary
of Quantities of C&D Wastes for the Project
|
Type
of Waste
|
Quantity
|
Disposal Location
|
|
Prior Months
|
Reporting Month
|
Cumulated
|
|
|
136.57
|
0
|
136.57
|
--
|
|
Paper / Cardboard Packing (‘000kg)
|
0.015
|
0
|
0.015
|
--
|
|
Plastics (‘000kg)
|
0
|
0
|
0
|
--
|
|
Chemical Wastes (‘000kg)
|
0
|
0
|
0
|
--
|
|
General Refuses (‘000m3)
|
0.391
|
0.041
|
0.432
|
NENT
|
7.1.1
According to the Updated EM&A Manual, the environmental site
inspection shall be formulated by ET Leader. Weekly environmental site inspections
should carry out to confirm the environmental performance.
7.2.1
In the Reporting Period, joint site inspection to evaluate the
site environmental performance by the RE, ET and the Contractor has been
carried out on 6, 13, 20 and 25 July 2017. Furthermore, IEC attend site inspection
was on 25 July 2017. No non-compliance was noted.
7.2.2
Observations
for the site inspections and monthly audit within this Reporting Period are
summarized in Table 7-1.
Table 7-1 Site Observations
|
Date
|
Findings / Deficiencies
|
Follow-Up Status
|
|
27 June 2017
|
Ÿ Muddy sludge was observed on the ground near main
building. The contractor was advised to clean the sludge as soon as possible.
Ÿ
The contractor was reminded to clean stagnant water
near worker rest area.
|
Ÿ Suldge was removed from site area. Last observation
closed.
Ÿ Not required for reminder.
|
|
6 July 2017
|
Ÿ Chemical container was observed without drip tray. The contractor was advised to
provide drip tray for chemical container on-site.
Ÿ
The contractor was reminded to clean water pounding
within site area.
|
Ÿ
Chemical container was removed from site. Last
observation closed.
Ÿ Not required for reminder.
|
|
13 July 2017
|
Ÿ Chemical containers were observed without drip tray on the main building. The
contractor was advised to provide drip tray for chemical container on-site.
Ÿ The contractor was reminded to dispose scattered waste
such as cans and plastic bottle within main building regularly
|
Ÿ
Chemical containers were removed from site. Last
observation closed.
Ÿ
Ÿ Not required for reminder.
|
|
20 July 2017
|
Ÿ Accumulation of stagnant water was observed. The
contractor was advised to clear the stagnant water to aviod mosquito
breeding.
Ÿ
The contractor was reminded to perform house-keeping
throughout construction period.
|
Ÿ
Larvicidual oil was sprayed within site area. Last
observation closed.
Ÿ Not required for reminder.
|
|
25 July 2017
|
Ÿ
No
adversed environmental issue was observed during site inspection.
|
Ÿ NA
|
7.2.3
In the
Reporting Period, the overall environmental
performance was considered satisfactory.
8.1.1
No
environmental complaint, summons and prosecution was received in this reporting
period. The statistical summary table of environmental complaint is presented
in Tables 8-1, 8-2 and 8-3.
Table 8-1 Statistical
Summary of Environmental Complaints
|
Reporting Period
|
Environmental Complaint
Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
1 to 31 July 2017
|
0
|
0
|
NA
|
Table 8-2 Statistical
Summary of Environmental Summons
|
Reporting Period
|
Environmental Summons
Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
1 to 31 July 2017
|
0
|
0
|
NA
|
Table 8-3 Statistical
Summary of Environmental Prosecution
|
Reporting Period
|
Environmental Prosecution
Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
1 to 31 July 2017
|
0
|
0
|
NA
|
9.1.1
The environmental mitigation measures that recommended in the
Implementation Schedule for Environmental Mitigation Measures (ISEMM) in the Updated
EM&A Manual covered the issues of dust, noise, water and waste and they are
summarized presented in Appendix M.
9.1.2
The Contract under the Project shall be implementing the required
environmental mitigation measures according to the Updated EM&A Manual as
subject to the site condition.
Environmental mitigation measures generally implemented by the Contract
in this Reporting Period are summarized in Table 9-1.
Table 9-1 Environmental
Mitigation Measures
|
Issues
|
Environmental Mitigation Measures
|
|
Water
Quality
|
· Wastewater to be treated by the filtration
systems i.e. sedimentation tank before to discharge.
|
|
Air
Quality
|
· Maintain wet surface on access road
· All vehicles must be used wheel washing facility
before off site
· Spray water during breaking works
· A cleaning truck was
regularly performed on the public road to prevent fugitive dust emission
|
|
Noise
|
· Restrain operation time of plants from 07:00 to
19:00 on any working day except for Public Holiday and Sunday.
· Keep good maintenance of plants
· Shut down the plants when not in used.
|
|
Waste
and Chemical Management
|
· On-site sorting prior to disposal
· Follow requirements and procedures of the
“Trip-ticket System”
·
Predict required
quantity of concrete accurately
· Collect
the unused fresh concrete at designated locations in the sites for subsequent
disposal
|
|
General
|
· The site was generally kept tidy and clean.
|
9.1.3
Based on monitoring results including air quality and construction
noise, it is considered that the environmental mitigation measures implemented
by the Contractor in this Reporting Period are effective.
9.2.1
Construction activities listed below will be undertaken in the
coming month for the Contract of the Project.
Ÿ Dismantle & Erection of
formworks, steel fixing works, and erection of temporary metal falsework (At
membrane facility building)
Ÿ Excavation, pipe laying of CLP
cable duct
Ÿ Pipe installation for DN1600
BR1 Effluent Pipe (Near Bioreactor No1)
Ÿ Erection of formwork and fixing
of reinforcement of wall of pretreatment screen chamber (Near Bioreactor No.1)
Ÿ Concreting the base slab of
pretreatment screen chamber
Ÿ Installation of FRP Baffle
Wall and Walkway (At Bioreactor No.1)
Excavation, Installation of sheet pile , Pipelaying
for DN1400 RAS Pipe (Near Bioreactor No1)
Ÿ Plastering for the internal
finishing for membrane facilities building
9.3.1
Key issues to be considered in the coming month for the Contract
include:
Ÿ
Implementation of dust suppression measures
at all times;
Ÿ
Potential fugitive dust quality impact due
from the dry/loose/exposure soil surface/dusty material;
Ÿ Ensure dust suppression
measures are implemented properly;
Ÿ Implementation of construction
noise preventative control measures;
Ÿ Management of chemical wastes;
Ÿ Follow-up of improvement on
general waste management issues; and
10.1.1
This is the 22nd
Monthly EM&A report, covering the construction period from 1 to 31 July 2017.
10.1.2
No 24-hour or 1-hour TSP monitoring results that triggered the
Action or Limit Levels were recorded.
No NOEs or the associated corrective actions were therefore
issued.
10.1.3
No noise complaint (which is an Action Level exceedance) was
received and no construction noise measurement results that exceeded the Limit
Level were recorded in this Reporting Period. No NOEs or the
associated corrective actions were therefore issued.
10.1.4
No
documented complaint, notification of summons or successful prosecution was
received.
10.1.5
In the Reporting Period, joint site inspection to evaluate the
site environmental performance by the RE, ET and the Contractor was
carried out on 6, 13, 20 and 25 July 2017. Furthermore, IEC attend site inspection
was on 25 July 2017. No non-compliance was noted.
10.1.6
No
site inspection was undertaken by any external party in this Reporting Period.
10.2.1
As wet
season is approaching, special attention should be paid to avoid ingress of
surface runoff into nearby water bodies from the construction site. Water quality mitigation measures should
be fully implemented.
10.2.2
Moreover, air quality mitigation measures including
wheel wash facilities, watering of haul roads and covering of dusty materials
with tarpaulin sheet, etc. should be properly maintained.
10.2.3
To control the site performance on waste management, Tsun Yip shall ensure that all solid
and liquid waste management works are fully in compliance with the relevant
license/permit requirements, such as the effluent discharge licence and the
chemical waste producer registration.
Tsun Yip is also reminded to implement the recommended environmental
mitigation measures according to the Updating Environmental Monitoring and
Audit Manual.
