Issue No. : 1
Issue
Date : February 2009
Project No. : 768
Joint User Complex and Wholesale Fish Market at Area
44, Tuen Mun
Second Quarterly Environmental
Monitoring
& Audit Report
(November 2008 – January 2009)
Prepared By:
Allied Environmental Consultants Ltd.
COMMERCIAL-IN-CONFIDENCE
Issue No. : 1
Issue Date : February 2009
Project No. : 768
Joint
User Complex and Wholesale Fish Market at Area 44, Tuen Mun
Second Quarterly Environmental
Monitoring
& Audit Report
(November 2008 – January
2009)
Prepared By:
Allied Environmental Consultants Ltd.
COMMERCIAL-IN-CONFIDENCE
Author:
Nic Lam
BSc(Hons)
Checked
and Approved:
Grace Kwok
BEng(Hons) MHKIEIA
MHKIOA
MISWA MIAIA MRAPA
LEED AP
This report has been prepared by Allied
Environmental Consultants Limited with all reasonable skill, care and diligence
within the terms of the Agreement with the client, incorporating our General
Terms and Conditions of Business and taking account of the resources devoted to
it by agreement with the client.
We disclaim any responsibility to the
client and others in respect of any matters outside the scope of the above.
This report is confidential to the client
and we accept no responsibility of whatsoever nature to third parties to whom
this report, or any part thereof, is made known. Any such party relies upon the report at
their own risk.
Table of Contents
Table of Contents i
List of Tables ii
List of Figures ii
List of Appendices ii
EXECUTIVE SUMMARY 1
1. PROJECT BACKGROUND 2
1.1 Project Organization and Contact Personnel 2
2. SENSITIVE RECEIVERS 3
3. SUMMARY OF EM&A
REQUIREMENT 3
4. MONITORING METHODOLOGY 5
4.1 Monitoring Programme 5
4.2 Air Quality Monitoring 5
4.3 Noise Monitoring 5
5. RESULTS 6
5.1. Air Quality 6
5.2. Noise 6
5.3 Weather
Conitions 6
6. SITE INSPECTION
& AUDIT 7
7. Non-compliance,
Complaints, Notifications of Summons and Successful Prosecutions 8
8. OTHERS 8
9. RECOMMENDATIONS AND CONCLUSIONS 8
9.1. Recommendations 8
9.2. Conclusions 9
List
of Tables
Table 1 Contact Details of
Key Personnel
Table 2 Action and Limit Level for Air Quality Impact
Monitoring at Yuet Wu Villa
Table 3 Action
and Limit Levels for Construction Noise Impact Monitoring
Table 4 Event
Action Plan
Table 5 Noise Monitoring Equipment
Table 6 Summary of Weather Conditions during the
Monitoring Period
Table 7 Summary
of Site Inspections
List of Figures
Figure
1 Site
Location Plan
Figure
2 Location
of Air Quality Monitoring Station
Figure
3 Location
of Noise Monitoring Station
Figure
4 Photos
of Air Quality Monitoring Station
Figure
5 Photos
of Noise Monitoring Station
Figure 6 Photos
of Construction Site for Junior Police
Officers' Married Quarters
List
of Appendices
Appendix A Calibration
Record of High-Volume TSP Sampler
Appendix B Calibration
Certification of the Sound Level Meter and Calibrator
Appendix
C Summary
and Graphical Plot of 1-Hour TSP Monitoring Record
Appendix
D Summary
and Graphical Plot of 24-Hour TSP Monitoring Record
Appendix
E Summary
and Graphical Plot of Noise Monitoring Record
Appendix F Wind Record from Hong Kong Observatory
Appendix G Mitigation
Measures Implementation Schedule for Construction Stage
Allied Environmental Consultants Limited (AEC) has been
appointed to conduct an environmental monitoring and audit (EM&A) program for the proposed Joint User Complex and Wholesale Fish Market at Area
44, Tuen Mun. The construction works was commenced on 31st July 2008. This
report is the second quarterly
EM&A report, which summarizes the environmental monitoring and audit
results recorded during the period from 1st November
2008 to 31st January 2009.
Based on the monitoring results, the air
quality and construction noise level complied with the environmental
requirements in EM&A Manual. There were no environmental complaints
received in this quarter. No notification
of summons or prosecution was received.
Construction activities undertaken from November 2008 to January 2008 included jack piling, drainage
diversion, and some internal finishing. Potential environmental impacts include
dust generation from stockpiles of dusty materials and the drainage diversion work, noise
from operation of the equipments and jack piling; runoff from drainage diversion
works and the storage of various C&D and chemical wastes. The Contractor
should properly implement the required environmental mitigation measures as per
the implementation schedule in the EM&A manual to ensure no significant
adverse environmental impacts to be arisen from the construction works. The Contractor
was reminded to maintain good housekeeping throughout the construction phase.
A Joint User
Complex and Wholesale Fish Market (WFM Complex) at Area 44 in Tuen Mun is proposed to be designed and
built by Architectural Services Department on behalf of Agriculture, Fisheries
and Conservation Department, Marine Department, and Food and Environmental
Hygiene Department of the Hong Kong SAR. The WFM Complex is to provide a
permanent site for the relocation of the existing temporary wholesale fish
market at Tuen Mun Area 27 and to accommodate a community hall and dragon boat
racing spectator stand for public use. The proposed development is a 3-storey
complex to accommodate the wholesale fish market at the ground floor, a
community hall on the first and second floors, and an extensive landscaped deck
on roof level. The proposed Wholesale Fish Market is categorized as a
designated project under the Environmental Impact Assessment Ordinance (EIAO)
and therefore a detailed Environmental Impact Assessment (EIA-085/2002) has
been conducted in year 2002 and an Environmental Permit (EP-296/2007) was
issued by Environmental Protection Department in December 2007.
The subject site is located at Castle Peak
Bay of Tuen Mun given in Figure 1. The subject site is bounded to the north by a future local
open space presently used as a temporary car park, to the east by Castle Peak Bay typhoon shelter, to the south by a
future lorry park and to the west by Wu
Shan Road. Yuet Wu Villa being the nearest
residential establishment is located at around 85m from the site boundary.
Key personnel and contact particulars are summarized in Table 1.
Table 1 Contact
Details of Key Personnel
|
Role
|
Department / Company
|
Names
|
Contact Number
|
Fax Number
|
|
Lead User
Department
|
Agriculture,
Fisheries, and Conservation Department
|
Mr. K.H. Chan
Ms. Louise Li
|
2150 7092
2150 7140
|
2314 2866
|
|
Environmental
Permit Holder
|
Architecture
Services Department
|
Mr. S.W. Chow
Ms. Susana Chan
|
2867 3716
2867 6706
|
2523 9622
|
|
Architect
|
P&T
Architects and Engineers Ltd.
|
Ms. Sarah Ng
Ms. Vivian Law
|
2835 3548
2832 3046
|
2891 3834
|
|
Main
Contractor
|
W. Hing
Construction Co. Ltd.
|
Mr. Andy Chan
Mr. Tim Wong
|
9630 7404
6478 4623
|
8343 9188
|
|
Environmental
Team Leader
|
Allied
Environmental Consultants Ltd.
|
Ms. Grace
Kwok
|
2815 7028
|
2815 5399
|
|
Independent
Environmental Checker
|
Cinotech
Consultants Ltd.
|
Mr. Alex
Ngai
|
2151 2083
|
3107 1388
|
Air Sensitive Receivers (ASRs) within 500m include Yuet Wu Villa, Lawn Bowling
Field, Tennis Court,
which are less than 100m
away from the subject site. Tuen Mun Wu Hong Clinic is located to the west at
about 100m to the
site boundary. Two secondary schools, namely Ka Chi Secondary School and South Tuen
Mun Government
Secondary School, are
approximately 300m to the
south of the site boundary.
Noise Sensitive Receivers (NSRs) within 300m are Yuet Wu Villa, Siu Hei Court, Yan Chai Hospital Low
Chan Chor
Si Primary
School and Wu King Estate. The nearest NSR will
be Block 15 of Yuet Wu Villa.
For regular
impact monitoring, the sampling frequency of at least once in every six-days,
shall be strictly observed at the monitoring station for 24-hr TSP
monitoring. For 1-hr TSP
monitoring, the sampling frequency of at least three times in every six-days
should be undertaken when the highest dust impact occurs. For noise monitoring,
one set of measurement between 0700-1900 hours on normal weekdays. Leq(30 min) shall be used as the monitoring parameter.
From baseline monitoring results, the proposed Action and Limit Levels for air quality are summarized in Table 2. The
average baseline 1-hr TSP value of 129μg/m3 and
24-hr TSP value of 65μg/m3
measured at Block 15, Yuet Wu Villa was used to determine the action and limit
level for air quality impact monitoring. The proposed Action and Limit Levels
for construction noise are summarized in Table 3.
Table 2 Action
and Limit Level for Air Quality Impact Monitoring at Yuet Wu Villa
|
Parameters
|
Baseline Level (μg/m3)
|
Action Level (μg/m3)
|
Limit Level (μg/m3)
|
|
24 Hour TSP Level
|
65
|
173
|
260
|
|
1 Hour TSP Level
|
129
|
334
|
500
|
Table 3
Action and Limit Levels for Construction Noise Impact Monitoring
|
Time Period
|
Action Level
|
Limit Level
|
|
Daytime (0700-1900 hours) on weekdays
|
When one documented compliant is received
|
Dwelling 75dB(A)1
School 70dB(A)1
(65dB(A) during
examinations)1
|
|
1900-2300 on any day and 0700-2300 on
Sunday and general holidays, for use of PME2
|
When one documented compliant is received
|
65dB(A)3
|
|
All days during the night-time (2300-0700
hours) 2
|
When one documented compliant is received
|
50dB(A)3
|
Note: 1. Construction
noise criteria stipulated in the TM-EIAO
2. A Construction
Noise Permit (CNP) shall be required for the carrying out of the construction
work during the restricted hours (1900-2300 on any day
and 0700-2300 on Sunday and general holidays, for use of PME; and All days
during the night-time (2300-0700 hours))
3. Area sensitivity rating of the monitoring location
is “B”.
Should non-compliance of the above Action and Limit levels occurs, the
contractor shall undertake corresponding action in accordance with
the proposed Event Action Plan given in EM&A Manual. A summarized general
Event Action Plan is given in Table 4. Details should be referred to the Event Action Plan in the
EM&A Manual.
Table4 Event
Action Plan
|
Level
|
Step
1
|
Step
2
|
Step
3
|
|
Action
|
l Identify source
l Check monitoring data and working methods
|
l Contact project manager to discuss and
implement remedial action
l Rectify any unacceptable practice
l Amend working methods if appropriate
l If exceedance continues, commence
additional monitoring
|
l Notify client/project manager following
correct of the situation
l Cease additional monitoring if exceedance
stops
|
|
Limit
|
l Identify source
l Notify client/project manager
l Check monitoring data and working methods
l Repeat measurement to confirm finding
l Commence additional monitoring
|
l Take immediate action to avoid further
exceedance
l Submit proposal for remedial actions to
client/project manager within 3 working days
l Implement the agreed proposal
l If exceedance continues, amend and
resubmit the proposal
|
l Notify client/project manager following
correction of the situation
l Cease additional monitoring if exceedance
stops
|
Air quality monitoring and noise
monitoring were conducted at Block 15, Yuet Wu Villa. Air
quality monitoring station was set up at the roof top of the residential block
and noise monitoring was conducted at 1.2m above ground level at the junction of Wu Sau Street and
Wu On Street as given in Figure
2
and 3.
Figure
4
and 5 show photos taken during monitoring at the
two locations.
A
construction site for the proposed Junior Police Officers' Married Quarters is
located at Wu Hong Street which is 110m northwest from the monitoring
location, which is also a potential major source of the TSP generation. Figure 6 shows the photos of the construction site.
1-hour and 24-hour TSP air quality monitoring was conducted at the
designated air quality monitoring location using a High Volume TSP Sampler (Model No: Anderson
GMWS-2310 ACCU-VOL) at the designated location. The Calibration
Record of the High-Volume TSP Sampler is given in Appendix A. 24-hour TSP samples were taken every six
days. 1-hour TSP samples were taken three times a day
between 0700-1900 hours.
Noise monitoring was conducted
at the designated noise monitoring location between 0700-1900 hours using a sound
level meter which complies with the International Electrotechnical Commission
Publications 651:1979 (Type 1) and 804:1985 (Type 1). Noise instrumentation
details are given in Table 5 and the Calibration Certificate for the sound level meter
and calibrator is given in Appendix B.
Table 5 Noise
Monitoring Equipment
|
Manufacturer
|
Type/Model No.
|
Equipment
|
|
RION
|
Model NL 31
|
Precision Sound Level Analyzer with windshield
|
|
RION
|
Model NC 73
|
Calibrator
|
Noise levels measurements
were recorded in terms of thirty minutes A-weighted equivalent continuous sound
pressure level (Leq(30min)) on a weekly basis. The sound level meter was
calibrated immediately prior to and following each noise measurement. The meter
was mounted on a tripod at a height of 1.2m and the microphone was positioned at 1m away the building façade of the noise
monitoring station facing the construction site.
Noise measurements were not made in the presence of fog, rain, and wind
with a steady speed exceeding 5m/s
or wind with gusts exceeding 10m/s.
The wind speed was checked with a portable anemometer capable of measuring the
wind speed in m/s.
No exceedance was recorded in this quarter. Summary and graphical plots of
air quality monitoring record of 1-hour TSP levels and 24-hour TSP levels are
provided in Appendix C and D.
Noise monitoring results in terms of Leq(30min), L10(30min)
L90(30min) were measured at the designated noise monitoring
location. L10 and L90 represent sound levels that are
exceeded 10% and 90% of the time respectively. Normally, L10 measurements
can be considered as the average peak levels, whilst L90 levels can
be considered as the average background noise levels.
No exceedance was recorded in this quarter. Summary of noise monitoring record is
provided in Appendix E.
Weather data of the monitoring station were obtained from the nearest
Hong Kong Observatory (HKO) Tuen Mun automatic weather station located at Tuen
Mun Town Park (63 mPD).Table 6 summarizes the wind data during the monitoring
dates. Wind record from HKO is shown in Appendix F.
Table 6 Summary
of Weather Conditions during the Monitoring Period
|
Date
|
Weather
|
Prevailing Wind Direction
|
Daily Average Wind Speed (m/s)
|
|
3 Nov 2008
|
Cloudy
|
NE
|
2.66
|
|
8
Nov 2008
|
Sunny
|
N
|
3.66
|
|
14 Nov 2008
|
Sunny
|
N
|
1.93
|
|
20 Nov 2008
|
Sunny
|
NE
|
3.07
|
|
26 Nov 2008
|
Sunny
|
N
|
2.34
|
|
2 Dec 2008
|
Sunny
|
S
|
2.22
|
|
8 Dec 2008
|
Sunny
|
N
|
2.20
|
|
13 Dec 2008
|
Cloudy
|
N
|
1.83
|
|
19 Dec 2008
|
Sunny
|
SE
|
1.78
|
|
23 Dec 2008
|
Sunny
|
NE
|
2.78
|
|
29 Dec 2008
|
Cloudy
|
NE
|
2.80
|
|
3 Jan 2009
|
Sunny
|
N
|
1.61
|
|
9 Jan 2009
|
Sunny
|
N
|
3.20
|
|
15 Jan 2009
|
Sunny
|
N
|
1.85
|
|
21 Jan 2009
|
Cloudy
|
N
|
1.47
|
|
29 Jan 2009
|
Cloudy
|
NW
|
1.75
|
Weekly site
inspections were carried out by representatives of the ET. Thirteen site
inspections were conducted on 6th, 14th, 21st,
and 28th November 2008; 4th, 12th, 19th,
23rd December 2008 and 2nd, 10th, 15th,
22nd, and 30th January 2009. Key findings are summarized
in Table 7.
The mitigation
measures undertaken by the Contractor are effective in minimizing the
environmental impact; however, the Contractor should implement these mitigation
measures more effectively in order to prevent causing any adverse environmental
impact.
Table 7 Summary
of Site Inspections
|
Date
|
Observations
|
Action taken by contractor
|
Outcome
|
|
6/11/2008
|
No outstanding observations during
inspection.
|
Contractor was required to keep up with the mitigation
measures.
|
|
|
14/11/2008
|
Oil drums were placed on bare land.
|
Contractor was
requested to provide drip tray for oil drums.
|
The situation
was rectified immediately.
|
|
21/11/2008
|
No outstanding observations during
inspection.
|
Contractor was required to keep up with the mitigation
measures.
|
|
|
28/11/2008
|
No outstanding observations during
inspection.
|
Contractor was required to keep up with the mitigation
measures.
|
|
|
4/12/2008
|
No outstanding observations during
inspection.
|
Contractor was required to keep up with the mitigation
measures.
|
|
|
12/12/2008
|
No outstanding observations during
inspection.
|
Contractor was required to keep up with the mitigation
measures.
|
|
|
19/12/2008
|
No outstanding observations during
inspection.
|
Contractor was required to keep up with the mitigation
measures.
|
|
|
23/12/2008
|
No outstanding observations during
inspection.
|
Contractor was required to keep up with the mitigation
measures.
|
|
|
2/1/2009
|
No outstanding observations during
inspection.
|
Contractor was required to keep up with the mitigation
measures.
|
|
|
10/1/2009
|
Stockpiles
were compacted.
|
The contractor
was advised to cover the stockpiles after work.
|
The situation
was rectified after work immediately.
|
|
15/1/2008
|
No outstanding observations during
inspection.
|
Contractor was required to keep up with the mitigation
measures.
|
|
|
22/1/2009
|
No outstanding observations during
inspection.
|
Contractor was required to keep up with the mitigation
measures.
|
|
|
30/1/2009
|
No outstanding observations during
inspection.
|
Contractor was required to keep up with the mitigation
measures.
|
|
During site inspections in this quarter, no non-conformance of implementation of environmental
mitigation measures was identified. All environmental mitigation measures for construction stages stated in
the
approved EIA Report, EM&A
Manual and Environmental Permit shall be carried out throughout the whole
construction period as shown in Appendix G.
In this quarter, no complaints, inspection notices, and notifications of summons or
prosecution were received.
5243.85 tonnes
of inert C&D waste was disposed at public fill. 17.37 tonnes of waste was
disposed to landfill. No chemical waste was transported off site in this quarter.
In accordance with
the environmental site audits undertaken during the report quarter, the
following recommendations are made:
·
Drip trays should be used for storing the fuel drum
and it should be cleaned up regularly to prevent any
leakage; and
·
Stockpiles should be
covered properly when no works were being undertaken.
The ET will keep tract on the EM&A programme to ensure compliance of
environmental requirements and the proper implementation of all necessary
mitigation measures.
Environmental monitoring
has been carried out for the proposed Joint User Complex and Wholesale Fish Market at Area 44, Tuen Mun. 1-hour and 24-hour TSP air quality monitoring and noise monitoring was
conducted at Block 15, Yuet Wu Villa during the period from 1st November 2008 to 31st January 2009, in
accordance with EM&A Manual and the requirement under Environmental Permit
(No. EP-296/2007). All monitoring results were checked and reviewed. 48 sets of 1-hour
TSP level monitoring, 16 sets of 24-hour TSP level monitoring,
and 16 sets of noise monitoring were carried out during the reporting quarter. No exceedance of any of the monitoring data was recorded. No environmental complaints and notification of
summons or prosecution were received during the second
quarter