EXECUTIVE SUMMARY

Allied Environmental Consultants Limited (AEC) has been appointed to conduct an environmental monitoring and audit (EM&A) program for the Joint User Complex and Wholesale Fish Market (WFM) at Area 44, Tuen Mun. The operation of the WFM was commenced on 23^rd December 2010. This report is the first monthly EM&A report for operational phase, which detailed the environmental monitoring and audit results recorded during the period from 23^rd December 2010 to 31^st December 2010.

Impact environmental monitoring for the Joint User Complex and Wholesale Fish Market at Area 44, Tuen Mun has been carried out on 29^th December 2010 at Yuet Wu Villa. Odour and noise monitoring were conducted within the period of 0300-0630 hours.

The odour intensity rating on 29^th December 2010 was 1-No Odour.

Noise monitoring results at the monitoring location was 54.1 dB(A).

Based on the monitoring results, the odour monitoring and operational noise level complied with the environmental requirements in EM&A Manual. There were no breaches of the action and limit levels.

No complaint, inspection notice, notification of summons or prosecution was received.

1. PROJECT BACKGROUND

A Joint User Complex and Wholesale Fish Market (WFM Complex) at Area 44 in Tuen Mun is designed and built by Architectural Services Department on behalf of Agriculture, Fisheries and Conservation Department, Marine Department, Home Affairs 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, a dragon boat racing spectator stand, and other community facilities for public use. The development is a 3-storey complex to accommodate a wholesale fish market, a public toilet, a refuse collection point and a marine refuse collection point at the ground floor, a community hall on the first floor, and a dragon boat race spectator stand with landscaped deck on roof level. The 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 construction works were commenced on 31^st July 2008. Major construction works of the Project were substantially completed in September 2010 and handover works were completed in November 2010. The EM&A programme of construction phase was terminated and the EM&A programme of operational phase was commenced effective from 23^rd December 2010.

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. Rio Kwok	2867 3716 2867 3706	2523 9622
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, 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, odour patrol shall be carried out on a regular basis during the first year of operation. Odour patrol shall be carried out once a week during the first three months of operation of the WFM. The odour patrol frequency shall be reviewed afterwards.

According to the approved EM&A Manual, the Action and Limit Levels for operational phase odour patrol are summarized in Table 2.

Table 2 Action and Limit Levels for Operational Phase Odour Patrol

Parameter	Action Level	Limit Level
Perceived odour intensity	Higher than or equal to Level 3	Level 5
Incidence of odour complaints	Any incidence of odour complaint received	Two or more odour complaints received within one month

Should non-compliance of the above Action and Limit levels occurs, the Fish Marketing Organization (FMO) shall undertake corresponding in accordance with the Event/Action Plan given in the EM&A Manual. An Event/Action Plan for operational phase odour monitoring is given in Table 3.

Table 3 Event/Action Plan for Operational Phase Odour Patrol

EVENT	ACTION
EVENT	WFM Management (FMO)	AFCD	ASD
Action Level	1. Identify source/reason of odour nuisance or complaint 2. Inform AFCD 3. Repeat odour patrol to confirm finding 4. Discuss with AFCD on remedial actions required	1. Identify the source/reason of odour nuisance or complaint within one week 2. Rectify any unacceptable practice 3. Amend working method if appropriate 4. Inform ASD if cause of nuisance or complaint is considered to be caused by civil or E&M design problems’ 5. Implement amended working methods 6. Contact complaintant within 10 working days to inform the cause of nuisance and action taken	1. Assist AFCD to find the cause of the complaint 2. Modify or improve design as appropriate
Limit Level	1. Identify source/reason of odour nuisance or complaint 2. Inform AFCD 3. Repeat odour patrol to confirm finding 4. Discuss with AFCD on remedial actions required including retrofitting the scrubber system 5. Increase odour patrol frequency to daily 6. If the perceived odour intensity reduces, cease additional odour patrol	1. Carry out investigation to identify the source/reason of nuisance or odour complaint 2. Rectify any unacceptable practice 3. Amend working method if appropriate 4. Inform ASD if cause of nuisance or complaint is considered to be caused by civil or E&M design problems 5. Ensure remedial measures are properly implemented 6. To liaise with ASD on additional odour measures including retrofitting the scrubber system. If odour nuisance continues, consider what portion of the work is responsible for the high level of odour intensity and stop that portion of work until the exceedance is abated 7. Contact complainant within 10 days to inform the cause of nuisance and action taken	1. Assist AFCD to find the cause of the nuisance or complaint 2. Modify or improve the design of the odour measures including the retrofitting of scrubber system 3. Assist AFCD to formulate remedial actions

For noise monitoring, the operational noise level shall be measured weekly in terms of the A-weighted equivalent continuous sound pressure level (Leq). L_eq(₅_min) shall be used as monitoring parameter for the period from 0300 to 0630 hours. Each set of measurement shall include at least 3 consecutive L_eq(₅_min) results. As supplementary information for data auditing, statistical results such as L₁₀₍₅_min) and L₉₀₍₅_min) shall also be contained for reference.

Additional noise monitoring shall not be given for marine traffic noise. With consideration given to the selected access route, which represent the worst-scenarios in terms of distance to nearby receivers, the highest marine traffic noise levels at nearby sensitive receivers are found to be below the prevailing background noise level they are currently exposed to. The operation of the proposed WFM is not expected to generate additional marine traffic noise within the typhoon shelter and will not cause any deterioration to the existing noise climate in the vicinity of the typhoon shelter.

From baseline monitoring results, the Action and Limit Levels for operational phase noise monitoring are summarized in Table 4.

Table 4 Action and Limit Levels for Operational Phase Noise Monitoring

Time Period	Action Level	Limit Level
All days during the night-time (2300-0700 hours)	When one documented compliant is received	58dB(A)

Should non-compliance of the above Action and Limit levels occurs, the Fish Marketing Organization (FMO) shall undertake corresponding in accordance with the Event Action Plan given in the EM&A Manual. An Event/Action Plan for operational phase noise monitoring is given in Table 5.

Table 5 Event/Action Plan for Operational Phase Noise Monitoring

EVENT	ACTION
EVENT	WFM Management (FMO)	AFCD	ASD
Action Level	1. Notify AFCD 2. Identify source 3. Discuss with AFCD and formulate remedial measures 4. Increase monitoring frequency to check mitigation effectiveness	1. Identify the source 2. Rectify any unacceptable practice 3. Amend working method if appropriate 4. Inform ASD if cause of nuisance or complaint is considered to be caused by civil or E&M design problems’ 5. Implement amended working methods 6. Ensure remedial measures are properly implemented	3. Assist AFCD to find the cause of the exceedance 4. Modify or improve design as appropriate
Limit Level	7. Notify AFCD 8. Identify source 9. Repeat measurement to confirm finding 10. Increase monitoring frequency 11. Discuss with AFCD and formulate remedial measures 12. Assess effectiveness of the remedial actions 13. If exceedance stops, cease additional monitoring	8. Carry out investigation to identify the source 9. Rectify any unacceptable practice 10. Amend working method if appropriate 11. Inform ASD if cause of nuisance or complaint is considered to be caused by civil or E&M design problems 12. Implement amended working methods 13. Ensure remedial measures are properly implemented 14. If exceedance continues, consider what portion of the work is responsible and stop that portion of work until the exceedance is abated	4. Assist AFCD to find the cause of the exceedance 5. Modify or improve the design as appropriate 6. Assist AFCD to formulate remedial actions

4. MONITORING METHODOLOGY

4.1 Monitoring Programme

Odour patrol was conducted around Yuet Wu Villa and noise monitoring was conducted at Block 15, Yuet Wu Villa on 29^th December 2010. Appendix A displayed the detail schedule of the monitoring programme.

4.2 Odour Patrol

Odour patrol shall be conducted to investigate if there is any potential for odour nuisance due to the operation of the Wholesale Fish Market. The patrol shall be carried out by a team of at least two personnel during the peak hours for trading operation at the WFM from 3:00 to 6:30 a.m.

The area covered by the odour patrol shall include Air Sensitive Receivers in the vicinity of the WFM, namely Yuet Wu Villa. The location plan of odour patrol is shown in Figure 2.

During the patrol, the patrol officers shall identify if there was any odour characterised of that emitted from the WFM and assess the intensity of the odour perceived individually. The following odour intensity rating shall be adopted in the assessment:

1. - no odour

2. - not unpleasant

3. - slightly unpleasant

4. - unpleasant

5. - very unpleasant

Mean value of the odour intensity ratings assessed by the patrol team shall be reported. Location of odour assessment, temperature, wind speed, wind direction, relative humidity and time of patrol shall also be recorded.

If the mean odour intensity rating was higher than or equal to level 3, the patrol officers should investigate from where the odour was originated and identify the source of odour emission, if possible.

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 6 and the Calibration Certificate for the sound level meter and calibrator is given in Appendix B. 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 3. Figure 4 shows photo taken during monitoring.

Table 6 Noise Monitoring Equipments

Manufacturer	Type/Model No.	Equipment
Svantek	Svan-959	Precision Sound Level Analyser with windshield
Svantek	SV-30A	Sound Level Calibrator

Noise level measurements were recorded in terms of thirty minutes A-weighted equivalent continuous sound pressure level (L_eq(₅_min)) 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. Operational Phase Odour Patrol

Results of operational phase odour patrol are summarized in Table 7. The odour intensity rating on 29^th December 2010 was 1-No Odour.

Table 7 Results of Operational Phase Odour Patrol

Date and Time

Location

Temperature (℃)

Wind Speed (m/s)

Wind Direction

Relative Humidity (%)

Personnel

Odour Intensity Rating

29^th December 2010

04:50 – 05:30 am

Yuet Wu Villa

1.25

Cheng Kam Wing

Tsui Churh Yiu

5.2. Noise

Noise monitoring results in terms of L_eq(₅_min), L₁₀₍₅_min) L₉₀₍₅_min) measured at the designated noise monitoring location are summarized in Table 8. L₁₀₍₅_min) and L₉₀₍₅_min) represent sound levels that are exceeded 10% and 90% of the time respectively. Normally, L₁₀_(5min) measurements can be considered as the average peak levels, whilst L₉₀₍₅_min) 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 53.3dB(A) L_eq(₅_min) and 54.7dB(A) L_eq(30min)respectively with an average of 54.1dB(A) L_eq(₅_min).No exceedance was recorded in this reporting period. Summary of noise monitoring record is provided in Appendix C. The measured monitoring results were below the baseline monitoring results and they were higher than the predicted noise levels due to the increment of noise level from ambient background noise levels.

Table 8 Noise Monitoring Results

Date	L₁₀₍₅_mins)(dB(A))	L₉₀₍₅_mins) (dB(A))	L_eq₍₅_mins) (dB(A))	Average L_eq(₅_min) (dB(A))	Predicted L_eq(₅_min) (dB(A))
29^th December 2010	58.9	47.1	54.7	54.1	50
	57.4	48.2	54.2
	56.5	47.2	53.3

6. IMPLEMENTATION OF MITIGATION MEASURES

The relevant parties has implemented odour and noise mitigation measures which shall include, but not limited to the following:

l The WFM Complex (including the parking area) shall be enclosed to reduce the odour nuisance to the nearby residents;

l Contract specifications on the sound power level of mechanical ventilation system shall be followed;

l Off-route lorries shall not pass along the Wu Shan Road outside Yuet Wu Villa;

l Lorries queuing and vessel’s horning shall be controlled by WFM management and AFCD.

All environmental mitigation measures for operational stages stated in approved EIA Report, EM&A Manual and Environmental Permit shall be carried out throughout the whole operational period as shown in Appendix D.

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

No complaint, inspection notice, notification of summons or prosecution was received.

8. CONCLUSIONS

Environmental monitoring has been carried out for the Joint User Complex and Wholesale Fish Market at Area 44, Tuen Mun. Odour patrol and noise monitoring were conducted Yuet Wu Villa during the period from 23^rd December 2010 to 31^st December 2010.

The odour intensity rating on 29^th December 2010 was 1-No Odour. For impact noise monitoring, the average L_eq(30min) is 54.1dB(A). All monitoring results complied with the relevant action and limit levels. The measured monitoring results were below the baseline monitoring results and they were higher than the predicted noise levels due to the increment of noise level from ambient background noise levels.

No complaint, inspection notice, notification of summons or prosecution was received.