Issue
No. : 1
Issue
Date : July 2010
Project
No. : 768
Joint User Complex and Wholesale
Fish Market at Area 44, Tuen Mun
Environmental Monitoring & Audit
Report (June 2010)
Prepared By:
Allied
Environmental Consultants Ltd.
COMMERCIAL-IN-CONFIDENCE
Issue No. : 1
Issue Date : July 2010
Project No. : 768
Joint User Complex and Wholesale
Fish Market at Area 44, Tuen Mun
Environmental Monitoring & Audit
Report (June 2010)
Prepared By:
Allied
Environmental Consultants Ltd.
COMMERCIAL-IN-CONFIDENCE
Author:
Nic H. H. Lam
BSc(Hons)
Checked: Approved:
Adi Y. M. Lee Grace M. H. Kwok
BEng(Hons) MEng MHKIEIA 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 3
1.1 Project Organization and Contact Personnel 3
2. SENSITIVE RECEIVERS 4
3. CONSTRUCTION WORKS & PROGRAMME 4
4. SUMMARY OF
EM&A REQUIREMENT 5
5. MONITORING METHODOLOGY 7
5.1 Monitoring Programme 7
5.2 Air Quality Monitoring 7
5.3 Noise Monitoring 7
6. RESULTS 8
6.1. Air Quality 8
6.2. Noise 9
6.3. Weather Conditions 9
7. SITE INSPECTION
& AUDIT 10
8. Non-compliance,
Complaints, Notifications of Summons and Successful Prosecutions 10
9. OTHERS 11
10. CONCLUSIONS 11
Table 1 Contact Details of Key Personnel
Table 2 Interrelationship between Construction
Activities and Mitigation Measures
Table 3 Action and Limit Level for Air Quality Impact Monitoring at Yuet
Wu Villa
Table 4 Action and Limit Levels for Construction
Noise Impact Monitoring
Table 5 Event Action Plan
Table 6 Noise
Monitoring Equipment
Table 7 1-hour TSP Monitoring Results
Table 8 24-hour TSP Monitoring Results
Table 9 Noise Monitoring Results
Table 10 Summary
of Weather Conditions during the Monitoring Period
Table 11 Summary
of Site Inspections
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
Appendix A Detail
Schedule of Monitoring Programme
Appendix B Calibration
Record of High-Volume TSP Sampler
Appendix C Calibration
Certification of the Sound Level Meter and Calibrator
Appendix D Summary of 1-Hour
TSP Monitoring Record
Appendix E Summary of
24-Hour TSP Monitoring Record
Appendix F Summary of Noise
Monitoring Record
Appendix G Wind Record from
Hong Kong Observatory
Appendix H Mitigation
Measures Implementation Schedule for Construction Stage
Appendix I Memorandum Notifying the Violation
of the Noise Control Ordinance
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 were
commenced on
Impact environmental monitoring for the proposed Joint User Complex and Wholesale Fish Market at Area
44, Tuen Mun has been carried out on 4th, 10th, 15th,
21st and 26th June 2010 at
Block 15, Yuet Wu Villa. 1-hr
TSP and noise monitoring were conducted within the period of 0700-1900 hours,
where
24-hr
TSP monitoring was conducted continuously for a 24-hour period.
1-hour TSP monitoring results at the monitoring location ranged from 82£gg/m3 to 182£gg/m3 with an average of 117£gg/m3. 24-hour TSP monitoring
results ranged from 74£gg/m3 to 84£gg/m3 with an average of 77£gg/m3.
Noise monitoring results at the monitoring
location ranged from 60.9dB(A) to 62.7dB(A)
with an average of 61.6dB(A).
Based on the monitoring results, the air
quality and construction noise level complied with the environmental
requirements in EM&A Manual. There were no breaches of the action and limit
levels.
In this reporting
period, there was follow-up action from EPD regarding the non-compliance recorded on 16th May 2010
during site inspection of the EPD. The
contractor carried out construction works with powered mechanical equipment on 16th
May 2010 (Sunday) without Construction Noise Permit (CNP). Memorandum from EPD (Ref.: EP/RW/0000/080262 dated 8th
June 2010) was received reminding the main
contractor to abide by the NCO and supply to EPD the extract of the contract
documents showing the name of the appointed contractor/subcontractor of the
site, the project commencement date and the anticipated completion date, site
layout plan showing the location and boundary of the site; and site diary of
date. The contractor had provided the aforementioned
documents to the EPD for their follow-up action.
No other complaint,
inspection notice, notification of summons or prosecution was received.
Construction activities will be undertaken in July 2010
include internal finishing
works, installation of Kalzip
Roof, C&J installation works, metal works installation, dismantling of hoarding, last manhole connection works, reinstatement of existing concrete pavement
outside site boundary, installation
of fender, dismantling of bamboo
scaffolding, external landscape
works, 2nd or final fixing for E&M services works and T&C for
E&M services works.
Potential
environmental impacts include dust generation from stockpiles of dusty
materials, concrete works and the internal finishes; noise from operation of the equipments, runoff from concrete works,
drainage 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
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
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 7104 |
2314 2866 |
Environmental
Permit Holder |
Architecture
Services Department |
Mr. S.W. Chow Ms. Susana Chan |
2867 3716 2867 3706 |
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. Jim Lee |
9630 7404 6105 4076 |
8343 9188 |
Environmental
Team Leader |
Allied
Environmental Consultants Ltd. |
Ms. Grace
Kwok |
2815 7028 |
2815 5399 |
Independent
Environmental Checker |
Cinotech
Consultants Ltd. |
Dr. Priscilla Choy |
2151 2089 |
3107 1388 |
Air Sensitive Receivers (ASRs) within
Noise Sensitive Receivers (NSRs) within
The major works undertaken and/or completed during the
monitoring period are listed below:
-
Construction of G/F RC planter wall;
-
Minor concreting works;
-
Internal finishing works;
-
Installation of Kalzip Roof;
-
C&J installation works;
-
Metal works installation;
-
Laying of underground drain pipe at G/F Entrance
Plaza;
-
Dismantling of hoarding;
-
Last manhole connection works;
-
Installation of fender;
-
Dismantling of bamboo scaffolding;
-
External landscape works;
-
2nd or final fixing for E&M services works; and
-
T&C for E&M services works.
Table 2 shows the interrelationship between construction
activities and environmental mitigation measures for the reporting month.
Table 2 Interrelationship
between Construction Activities and Mitigation Measures
Construction Works |
Major
Environmental Impact |
Mitigation
Measures |
Concrete works |
Air, noise and water quality impacts |
Well-maintained plants were used and waste water were reused when
practicable, cement bags were properly covered and use indoors as practicable |
E&M services |
Water quality impacts |
Waste water were reused when practicable |
Internal & external finishes |
Noise impacts |
Closely monitoring of noise impacts |
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 3. The average baseline 1-hr TSP value of
129£gg/m3 and 24-hr TSP value of 65£gg/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 4.
Table 3 Action
and Limit Level for Air Quality Impact Monitoring at Yuet Wu Villa
Parameters |
Baseline Level (£gg/m3) |
Action Level (£gg/m3) |
Limit Level (£gg/m3) |
24-Hour
TSP Level |
65 |
173 |
260 |
1-Hour
TSP Level |
129 |
334 |
500 |
Table 4
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 in accordance with the proposed Event
Action Plan given in the EM&A Manual. A summarized general Event Action
Plan is given in Table 5. Details
should be referred to the Event Action Plan in the EM&A Manual.
Table 5 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 on
4th, 10th, 15th, 21st and 26th
June 2010. The air quality monitoring and noise monitoring for
July 2010 will be scheduled on 2nd, 8th, 14th,
20th, 26th and 31st July 2010. Appendix A displayed the detail schedule of the monitoring programme. Air
quality monitoring station was set up at the roof top of the residential block
and noise monitoring was conducted at
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 B. 24-hour TSP samples were taken every six
days. 1-hour TSP samples were taken three times a day
between 0700-1900 hours.
The weighing of the filter paper used in the monitoring was undertaken by ALS
Laboratory Group Environmental Division. (HOKLAS Registration No.: 066)
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 6 and the
Calibration Certificate for the sound level meter and calibrator is given in Appendix C.
Table 6 Noise
Monitoring Equipment
Manufacturer |
Type/Model No. |
Equipment |
RION |
Model NL 31 |
Precision Sound Level Analyser with windshield |
RION |
|
Calibrator |
Noise level measurements
were recorded in terms of thirty minutes A-weighted equivalent continuous sound
pressure level (Leq(30min)) on a daily 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
Noise measurements were not made in the presence of fog, rain, and wind
with a steady speed exceeding
1-hour and 24-hour TSP monitoring results are
summarized in Tables 7 and 8 and serve as the basis for determining the action and limit
levels. The minimum and maximum 1-hour TSP measured at Yuet Wu Villa was 82£gg/m3 and 182£gg/m3 respectively with an average of 117£gg/m3. The minimum and maximum 24-hour TSP measured was 74£gg/m3 and 84£gg/m3 respectively
with an average of 77£gg/m3. Summary of air quality
monitoring record is provided in Appendices D and E.
Table 7 1-Hour
TSP Monitoring Results
Date |
1-hr TSP (£gg/m3) |
Average (£gg/m3) |
|||
Reading 1 |
Reading 2 |
Reading 3 |
Average |
||
4th
June 2010 |
159 |
182 |
154 |
165 |
117 |
10th June 2010 |
128 |
126 |
116 |
123 |
|
15th June 2010 |
115 |
106 |
115 |
112 |
|
21st June 2010 |
95 |
95 |
91 |
94 |
|
26th June 2010 |
82 |
92 |
101 |
92 |
Table 8 24-Hour
TSP Monitoring Results
Date |
24-hr TSP (£gg/m3) |
4th
June 2010 |
84 |
10th June 2010 |
78 |
15th June 2010 |
78 |
21st June 2010 |
78 |
26th June 2010 |
74 |
Average |
77 |
Noise monitoring results in terms of Leq(30min), L10(30min)
L90(30min) measured at the designated noise monitoring location are
summarized in Table 9. L10(30min)
and L90(30min) represent sound levels that are exceeded 10% and 90%
of the time respectively. Normally, L10(30min) measurements
can be considered as the average peak levels, whilst L90(30min)
levels can be considered as the average background noise levels.
During the reporting month, the minimum and maximum noise level measured at Yuet Wu Villa was 60.9dB(A) Leq(30min)
and 62.7dB(A)
Leq(30min) respectively with an average of 61.6dB(A) Leq(30min).
No exceedance was recorded in this reporting period. Summary of noise monitoring record will be
provided in Appendix F.
Table 9 Noise
Monitoring Results
Date |
L10(30mins) (dB(A)) |
L90(30mins) (dB(A)) |
Leq(30mins) (dB(A)) |
4th
June 2010 |
62.9 |
58.7 |
61.2 |
10th June 2010 |
63.7 |
59.9 |
61.2 |
15th June 2010 |
62.7 |
58.0 |
60.9 |
21st June 2010 |
62.7 |
59.8 |
61.9 |
26th June 2010 |
63.9 |
59.7 |
62.7 |
Average |
63.2 |
59.2 |
61.6 |
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 10 summarizes the wind data during the
monitoring dates. Wind record from HKO is shown in Appendix G.
Table 10 Summary
of Weather Conditions during the Monitoring Period
Date |
Weather |
Prevailing
Wind direction |
Daily Average
Wind speed (m/s) |
4th
June 2010 |
Cloudy |
N |
1.82 |
10th June 2010 |
Cloudy |
W |
0.89 |
15th June 2010 |
Cloudy |
S |
3.34 |
21st June 2010 |
Cloudy |
SE |
2.80 |
26th June 2010 |
Cloudy |
SE |
2.38 |
4 site
inspections were conducted by the Environmental Team (ET) in this reporting period.
Major observations by the ET, actions by the Contractor and outcome are
summarized in the Table 11.
Table 11 Summary
of Site Inspections
Date |
Observations |
Action taken by Contractor |
Outcome |
4th June 2010 |
No observations during inspection. |
Contractor was required to keep up with the mitigation
measures. |
Nil. |
11th
June 2010 |
Haul road
appeared dry. |
Contractor was requested to increase the frequency of
watering. |
Sufficient
water spraying was given to dry haul road. |
Stockpiles of
rubbish were not properly covered. |
Contractor was
requested to provide covering to the demolished materials. |
Covering was
given to the demolished materials. |
|
18th
June 2010 |
Stockpiles of
sand were not properly covered. |
Contractor was
requested to provide covering. |
Covering was
given to the stockpiles of sand. |
25th
June 2010 |
Stockpiles of
sand and rubbish were not properly covered. |
Contractor was
requested to provide covering. |
Covering was
given to the stockpiles of sand and rubbish. |
During site inspections in the reporting month, no non-conformance of implementation
of environmental mitigation measures was identified. All environmental mitigation measures for construction
stages stated in approved EIA Report, EM&A Manual and Environmental Permit
shall be carried out throughout the whole construction period as shown in Appendix H.
In this reporting period, there was follow-up action
from EPD regarding the
non-compliance recorded on 16th May 2010 during site inspection of
the EPD. The contractor
carried out construction works with powered mechanical equipment on 16th
May 2010 (Sunday) without Construction Noise Permit (CNP). Memorandum from EPD (Ref.: EP/RW/0000/080262 dated 8th
June 2010) was received reminding the main
contractor to abide by the NCO and supply to EPD the extract of the contract
documents showing the name of the appointed contractor/subcontractor of the
site, the project commencement date and the anticipated completion date, site
layout plan showing the location and boundary of the site; and site diary of
date. The contractor had provided the aforementioned
documents to the EPD for their follow-up action. The memorandum was shown in Appendix I.
No other complaint, inspection notice,
notification of summons or prosecution was received.
A total of 1,402.21 tonnes of
inert C&D material was disposed of at public fill. A total of 149.4 tonnes
of waste including general refuse and non-inert C&D wastes such as timber and
bamboo were disposed to landfill. No chemical waste was transported off site in
this reporting period.
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 June 2010 to 30th June 2010.
The average 1-hour
TSP level is 117£gg/m3 and average 24-hour TSP level is 77£gg/m3. For impact noise monitoring, the average Leq(30min) is 61.6dB(A). All monitoring results complied with the
relevant action and limit levels.
In this reporting period, there was follow-up action
from EPD regarding the
non-compliance recorded on 16th May 2010 during site inspection of
the EPD. The contractor
carried out construction works with powered mechanical equipment on 16th
May 2010 (Sunday) without Construction Noise Permit (CNP). Memorandum from EPD (Ref.: EP/RW/0000/080262 dated 8th June
2010) was received reminding the main
contractor to abide by the NCO and supply to EPD the extract of the contract
documents showing the name of the appointed contractor/subcontractor of the
site, the project commencement date and the anticipated completion date, site
layout plan showing the location and boundary of the site; and site diary of
date. The contractor had provided the aforementioned
documents to the EPD for their follow-up action.
No other complaint, inspection notice,
notification of summons or prosecution was received.