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 Conditions 6

6. SITE INSPECTION & AUDIT 7

7. Non-compliance, Complaints, Notifications of Summons and Successful Prosecutions 9

8. OTHERS 9

9. RECOMMENDATIONS AND CONCLUSIONS 9

9.1. Recommendations 9

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 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

EXECUTIVE SUMMARY

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 31^st July 2008. This report is the seventh quarterly EM&A report, which summarizes the environmental monitoring and audit results recorded during the period from 1^st February 2010 to 30^th April 2010.

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 February 2010 to April 2010 included construction of superstructure; internal & external wall & ceiling rendering and plastering; floor screeding; erection of bamboo scaffolding; last manhole connection; internal wall & ceiling wall painting; installation of window & louver; installation of door frame; internal & external finishing works; installation of metal roof, waterproofing works; first & final fixing of E&M works, steel & metal works; construction of on-grade slab along G/F fish market; timber & metal door frame installation; lift installation; construction of hollow on-grade slab; construction of underground drainage system; installation of Kalzip roof system; and connection & construction of manhole along Wu Shan Road. Potential environmental impacts include dust generation from stockpiles of dusty materials, the superstructure, walls and building services; noise from operation of the equipments; runoff from building services 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.

1. PROJECT BACKGROUND

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.

1.1 Project Organization and Contact Personnel

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

2. SENSITIVE RECEIVERS

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.

3. SUMMARY OF EM&A REQUIREMENT

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

4. MONITORING METHODOLOGY

4.1 Monitoring Programme

Air quality monitoring and noise monitoring were conducted at Block 15, Yuet Wu Villa on 3^rd, 9^th, 12^th, 18^th and 24^th February 2010, 2^nd, 8^th, 13^th, 19^th, 25^th and 31^st March 2010 and 7^th, 13^th, 19^th, 24^th and 30^th April 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 1.2m above ground level in front of the residential block and 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 away from the monitoring location, which can be a major source of the noise and TSP generation during the monitoring period. The construction works of proposed Junior Police Officers’ Married Quarters were completed in March 2010. Figure 6 shows the photo of the construction site.

4.2 Air Quality Monitoring

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.

4.3 Noise Monitoring

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 C.

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.

5. RESULTS

5.1. Air Quality

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 Appendices D and E. The weighing of the filter paper used in the monitoring will be undertaken by ALS Laboratory Group Environmental Division. (HOKLAS Registration No.: 066)

5.2. Noise

Noise monitoring results in terms of L_eq(_30min), L_10(30min) L_90(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 F.

5.3. Weather Conditions

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 G.

Table 6 Summary of Weather Conditions during the Monitoring Period

Date	Weather	Prevailing Wind Direction	Daily Average Wind Speed (m/s)
3^rd February 2010	Cloudy	S	1.79
9^th February 2010	Cloudy	SE	3.90
12^th February 2010	Cloudy	NE	3.75
18^th February 2010	Cloudy	NE	3.11
24^th February 2010	Cloudy	SE	3.76
2^nd March 2010	Cloudy	SE	2.16
8^th March 2010	Cloudy	N	1.72
13^th March 2010	Cloudy	N	0.30
19^th March 2010	Sunny	SE	1.46
25^th March 2010	Cloudy	N	3.89
31^st March 2010	Cloudy	SE	2.82
7^th April 2010	Cloudy	S	2.22
13^th April 2010	Sunny	SE	3.67
19^th April 2010	Sunny	SW	2.33
24^th April 2010	Sunny	SE	3.41
30^th April 2010	Cloudy	S	2.49

6. SITE INSPECTION & AUDIT

Weekly site inspections were carried out by representatives of the ET. Thirteen site inspections were conducted on 5^th, 12^th, 19^th and 26^th February 2010, 5^th, 12^th, 19^th, 26^th March 2010, 2^nd, 9^th, 16^th, 23^rd and 30^th April 2010. 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
5^th February 2010	No observations during inspection.	Contractor was required to keep up with the mitigation measures.	Nil.
12^th February 2010	Haul road appeared dry.	Contractor was requested to increase the frequency of watering.	The situation was rectified immediately.
19^th February 2010	No observations during inspection.	Contractor was required to keep up with the mitigation measures.	Nil.
26^th February 2010	No observations during inspection.	Contractor was required to keep up with the mitigation measures.	Nil.
5^th March 2010	No observations during inspection.	Contractor was required to keep up with the mitigation measures.	Nil.
12^th March 2010	Haul road appeared dry.	Contractor was requested to increase the frequency of watering.	Sufficient water spraying was given to dry haul road.
19^th March 2010	No observations during inspection.	Contractor was required to keep up with the mitigation measures.	Nil.
26^th March 2010	No observations during inspection.	Contractor was required to keep up with the mitigation measures.	Nil.
2^nd April 2010	No observations during inspection.	Contractor was required to keep up with the mitigation measures.	Nil.
9^th April 2010	No observations during inspection.	Contractor was required to keep up with the mitigation measures.	Nil.
16^th April 2010	No observations during inspection.	Contractor was required to keep up with the mitigation measures.	Nil.
23^rd April 2010	No observations during inspection.	Contractor was required to keep up with the mitigation measures.	Nil.
30^th April 2010	No observations during inspection.	Contractor was required to keep up with the mitigation measures.	Nil.

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 H.

7. Non-compliance, Complaints, Notifications of Summons and Successful Prosecutions

In this quarter, no complaints, inspection notices, and notifications of summons or prosecution were received.

8. OTHERS

2,927.44 tonnes of inert C&D material was disposed at public fill. 598.36 tonnes of waste including general refuse and non-inert C&D waste such as timber and bamboo were disposed to landfill. No chemical waste was transported off site in this quarter.

9. RECOMMENDATIONS AND CONCLUSIONS

9.1. Recommendations

In accordance with the environmental site audits undertaken during the reporting quarter, the following recommendations are made:

· Increase the frequency of watering when the haul road appeared dry.

The ET will keep track on the EM&A programme to ensure compliance of environmental requirements and proper implementation of all necessary mitigation measures.

9.2. Conclusions

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 1^st February 2010 to 30^th April 2010, 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 seven quarter.