Operational odour patrol and noise monitoring are required prior to and during the initial operation of the Wholesale Fish Market. In this section, the methodology, equipment, monitoring location, criteria and protocols for the monitoring and audit during the operational phase are discussed. The purpose of the monitoring is to ensure that the recommended mitigation measures in the EIA Report are effective and that no residual impacts occur after the commissioning of the Project.
9.2
Operational Phase Odour Patrol
Daily operation of the proposed Wholesale Fish Market gives rise to odour emission which may affect the nearby sensitive receivers. Appropriate mitigation measures have been recommended in the EIA Report to reduce the potential odour emission impact to acceptable levels. In order to monitor the effectiveness of these mitigation measures and ensure that nearby sensitive receivers will not be subject to unforseen odour nuisance, odour patrol shall be carried out on a regular basis during the first year of operation.
9.2.1 Recommended Procedure
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.
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.
The responsible parties shall compare the findings obtained from the odour patrol with the Acton and Limit Levels for odour monitoring as shown in Table 9.1. If the operation of the WFM was confirmed to be the source of unpleasant odour, actions in accordance with the Event Action Plan shown in Table 9.2 shall be taken.
9.2.2 Frequency
Odour patrol shall be carried out once a week during the first three months of operation of the proposed Wholesale Fish Market. The odour patrol frequency shall be reviewed afterwards.
9.2.3 Odour Complaint
When a complaint is received
regarding odour nuisance, an Odour Complaint Form shall be completed and kept
at the Wholesale Fish Market. The form
shall include but not be limited to the following information:
· Date and time of the complaint;
· Name and contact information of the complainant;
· Location of where the odour nuisance occurred;
· Characteristics of the odour;
· Odour strength (e.g. highly offensive / offensive / slightly offensive / continuously detectable / intermittently detectable);
· Meteorological conditions including temperature, wind speed, relative humidity at the time of the complaint;
· Operation activities carried out at the Wholesale Fish Market at the time the nuisance occurred.
The responsible parties shall review the odour compliance register against the Acton and Limit Levels for odour monitoring as shown in Table 9.1. If the operation of the WFM was confirmed to be the source of unpleasant odour, actions in accordance with the Event Action Plan shown in Table 9.2 shall be taken.
9.2.4 Mitigation Measures
The relevant parties shall
implement odour mitigation measures thatwhich shall
include, but not be limited to the following:
· The WFM Complex (including the parking area) shall be enclosed to reduce the odour nuisance to the nearby residents.
Table 9.1 Action and Limit Levels for Odour Monitoring
|
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 |
Table 9.2 Event/Action Plan for Operational Phase Odour Monitoring
|
EVENT |
ACTION |
||
|
WFM
Management |
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
complainant within 10 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 additional 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
ArchSD 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 |
9.3 Operational
Phase Noise Monitoring
Noise monitoring after construction of the Wholesale Fish Market is recommended to verify the operational noise prediction made in the EIA Report. The Agriculture Fisheries and Conservation Department of the HKSAR and the Wholesale Fish Market Management shall be responsible for the operational phase monitoring. Monitoring shall be carried by a qualified contractor or laboratory.
The operational noise level shall
be measured in terms of the A-weighted equivalent continuous sound pressure
level (Leq). Leq (5min) shall be used
as the monitoring parameter for the time period between 2300-0700 hours. As the opening hours of the Wholesale Fish
Market for trading purposes is from 3:00 to 6:30 a.m., the operational noise
monitoring shall be conducted between this period. Each set of measurement shall at least include include at least 3
consecutive Leq (5min) results.
As supplementary information for data auditing, statistical results such as L10 and L90 shall also be obtained for reference.
9.3.2 Monitoring Equipment
Monitoring equipment to be used shall be the same as that specified in Section 3.2.
9.3.3 Monitoring Location
Tuen Mun Wu Hong Clinic was
not identified as one of the noise monitoring stations because the clinic is
closed during the opening hours of the Wholesale Fish Market. Table 9.3 shows
the proposed noise monitoring station for the operational stage.
Table 9.3 Proposed Noise Monitoring Station
|
Identification No. |
Description of NSR |
|
NSR1 |
Block 15, Yuet Wu Villa |
Location of the station is shown in Figure
2.1. However, the exact location where
the noise monitoring shall be conducted shall be agreed with the EPD.
9.3.4 Baseline Monitoring
Baseline noise monitoring shall be conducted at the proposed monitoring station following completion of the construction but prior to the operation of the Wholesale Fish Market. The baseline monitoring shall be carried out daily for a period of at least two weeks.
9.3.5 Impact Monitoring
During the first year of operation, monitoring shall be undertaken at the proposed monitoring location on a weekly basis. As the peaks hours for fish trading purposes of the Wholesale Fish Market are from 3:00 to 6:30 a.m., the impact noise monitoring shall be conducted within the period. One set of measurement of three consecutive Leq (5 min) shall be taken weekly.
The responsible parties shall compare the impact monitoring results with the Acton and Limit Levels for Noise Monitoring shown in Table 3.2. Should a non-compliance of the noise criteria occur, actions in accordance with the Event Action Plan as shown in Table 9.4 shall be taken.
9.3.6 Comparison of Measured and Predicted Results
Monitoring details and results including the comparison between the measured noise levels and the predicted levels shall be recorded in a report to be deposited to the EPD on a monthly basis. The report shall be certified by the Project Proponent before submission to the EPD.
9.3.7 Mitigation Measures
The relevant parties shall implement noise mitigation measures which
shall include, but not be limited to the following:
· Contract specifications on the sound power level of mechanical ventilation system shall be followed.
·
Off-route of lorries shall
not pass along the Wu Shan Road outside Yuet Wu Villa.
· Lorries queuing and vessel’s horning shall be controlled by WFM management and AFCD.
Table 9.4 Event/Action Plan for Operational Phase Noise Monitoring
|
EVENT |
ACTION |
||
|
WFM
Management |
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 complaint or exceedance is considered to be caused by civil or
E&M design problems 5. Implement
amended working methods 6. Ensure remedial
measures are properly implemented |
1. Assist AFCD to
find the cause of the exceedance 2. Modify or
improve design as appropriate |
|
Limit Level |
1. Notify AFCD 2. Identify source
3. Repeat
measurement to confirm finding 4. Increase
monitoring frequency 5. Discuss with
AFCD and formulate remedial measures 6. Assess
effectiveness of the remedial actions 7. If exceedance
stops, cease additional monitoring |
1.
Carry out investigation to identify the source 2.
Rectify any unacceptable practice 3.
Amend working method if appropriate 4.
Inform ASD if cause of complaint or exceedance is considered to be
caused by civil or E&M design problems 5.
Implement amended working methods 6.
Ensure remedial measures are properly implemented 7.
If exceedance continues, consider what portion of the work is
responsible and stop that portion of work until the exceedance is abated |
1.
Assist AFCD to find the cause of the exceedance 2.
Modify or improve design as appropriate 3.
Assist AFCD to formulate remedial actions |