Agreement No. CE 13/2008 (DS)
Control of Water Pollution at
Jordan Valley Box Culvert –
Investigation,
Design
and
Construction
__________________________
Project Profile for Control of
Water Pollution at Jordan Valley
Box Culvert – Sewage Pumping
Station (JVBCSPS)
__________________________
382838/B&V/036/Issue 1
Black & Veatch Hong Kong Limited
25/F Millennium City 6
392 Kwun Tong Road
Kowloon
Drainage Services Department
Consultants Management Division
42/F, Revenue Tower
5 Gloucester Road
Wan Chai, Hong Kong
June 2009
Control of Water Pollution at Jordan Valley Box Culvert
- Sewage Pumping Station
Project Profile
382838/B&V/036/Issue 1
CONTENTS
1.
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
2.
2.1
2.2
2.3
3.
3.1
3.2
3.3
4.
4.1
4.2
4.3
5.
5.1
5.2
6.
7.
Page
BASIC INFORMATION ................................................................................................ 1
Project Title ....................................................................................................................... 1
Purpose and Nature of the Project ..................................................................................... 1
Name of the Project Proponent.......................................................................................... 1
Location and Scale of Project............................................................................................ 2
Rationale for Site Selection ............................................................................................... 2
History of the Project Site ................................................................................................. 2
Number and Types of Designated Projects Covered by the Project Profile...................... 2
Name and Telephone Number of Contact Person ............................................................. 3
OUTLINE OF PLANNING AND IMPLEMENTATION PROGRAMME............... 4
Outline of Planning ........................................................................................................... 4
Project Implementation and Timetable ............................................................................. 4
Interactions with Other Projects ........................................................................................ 4
POSSIBLE IMPACTS ON THE ENVIRONMENT .................................................... 5
Outline of Processes Involved ........................................................................................... 5
Possible Environmental Impacts during Construction Phase ............................................ 6
Possible Environmental Impacts during Operation Stage ............................................... 10
MAJOR ELEMENTS OF THE SURROUDNING ENVIRONMENT .................... 13
Existing Sensitive Receivers and Sensitive Parts of the Natural Environment ............... 13
Planned Sensitive Receivers and Sensitive Parts of the Natural Environment ............... 13
Major Elements of the Surrounding Environment .......................................................... 14
ENVIRONMENTAL PROTECTION MEASURES TO BE INCORPORATED IN
THE DESIGN AND FURTHER ENVIRONMENTAL IMPLICATIONS.............. 15
During Construction Stage of the Project........................................................................ 15
During Operation Stage of the Sewage Pumping Station................................................ 17
SUMMARY OF POTENTIAL ENVIRONMENTAL IMPACTS AND
MITIGATION MEASURES ........................................................................................ 21
HISTORY OF SIMILAR PROJECTS........................................................................ 23
LIST OF FIGURES
Figure 1.1
Figure 1.2
Figure 3.1a
Figure 3.1b
Figure 3.2
Figure 4.1
Figure 5.1
Location Plan of the Jordan Valley Box Culvert Sewage Pumping Station (The
Project)
Outline Development Plan of the Project and the Environs
Existing Landscape Character Units and Visual Sensitive Receiver (VSR) in the
vicinity of the Whole Project
Planned Landscape Character Units and Visual Sensitive Receiver (VSR) in the
vicinity of the Whole Project
The Location of the Landscape Resources (LR) within the Study Area
Environmental Sensitive Receivers during Construction and Operation Phases for
the Project
Recommended Exhaust Locations Plan of the Whole Project
LIST OF TABLES
Table 4.1
Table 5.1a
Table 5.1b
Table 5.2a
Table 5.2b
Air and Noise Sensitive Receivers in the Vicinity of the Project Site
Summary of Residual Landscape Impacts during Construction Phase
Summary of Residual Visual Impacts during Construction Phase
Summary of Residual Landscape Impacts during Operation Phase
Summary of Residual Visual Impacts during Operation Phase
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Table 6.1
Table 7.1
Project Profile
382838/B&V/036/Issue 1
Summary of Potential Environmental Impacts and Mitigation Measures
Previous Direct Application for Environmental Permit for Sewage Pumping
Station
LIST OF APPENDICES
Appendix I
Appendix II
Appendix III
Appendix IV
Appendix V
Appendix VI
Appendix VII
Layout and Sectional Drawings Showing the Conceptual Scheme of Dry
Weather Flow Interceptor of the Project
Layout Plan and Section of the Whole Project
Tree Survey Plan and Assessment Schedule
Operation Noise Impact Assessment
Trees Planting Proposal
Perspective View of the Proposed JVBCSPS with Landscape and Visual
Mitigation Measures
Site photos for the Existing Petrol Filling Stations
Name
Signature
Date
Prepared
Esther Tong / Glenn Chan
19.06.09
Checked
Eric Lo
19.06.09
Reviewed
Kelvin Lau
19.06.09
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1.
BASIC INFORMATION
1.1
Project Title
1.1.1
Control of Water Pollution at Jordan Valley Box Culvert – Sewage Pumping Station
(JVBCSPS) (hereinafter referred to as the “Project”).
1.2
Purpose and Nature of the Project
1.2.1
Existing Jordan Valley Box Culvert (JVBC) is a reinforced concrete stormwater box
culvert serving a drainage catchment of about 5.9 km2. The JVBC is the backbone of
the drainage system that collects flow from Kowloon Bay, Ngau Tau Kok, Jordan
Valley and the rural area of Fei Ngo Shan, and ultimately discharges into the Kai Tak
Approach Channel (KTAC).
1.2.2
At present, the water quality in the KTAC and the odour associated with it remains
unsatisfactory. It is confirmed that polluted flows, including those from the expedient
connections in the area, have found their way into the JVBC and in turns discharges
into the KTAC. As a new Cruise Terminal is being planned at the old Kai Tak Airport
runway near the KTAC, together with development of the area adjoining the KTAC for
various uses, it is imperative that the water quality in the KTAC should be improved to
facilitate the commissioning of the new Cruise Terminal.
1.2.3
In May 2007, the Environmental Protection Department (EPD) commissioned a study
entitled “Study on the Control of Water Pollution at Jordan Valley Box Culvert”
(EPD’s Study) to identify the sources and evaluate possible options for the reduction of
the water pollution at the JVBC. EPD’s Study recommended intercepting the dry
weather flow in the JVBC to alleviate the pollution problem.
1.2.4
The Drainage Services Department (DSD) commissioned the agreement no. CE
13/2008 (DS) “Control of Water Pollution at Jordan Valley Box Culvert – Investigation,
Design and Construction” (the whole project) in September 2008 to implement the
proposed dry weather flow interception scheme recommended in EPD’s Study. The
scope of the whole project comprises the design and construction of a sewage pumping
station (JVBCSPS), an automatic tidal barrier, a desilting compound, an emergency
stormwater bypass culvert and associated facilities1 to intercept the dry weather flow
from the JVBC.
1.2.5
The Project in this Project Profile, which forms part of the agreement no. CE 13/2008
(DS), includes the construction and operation of a sewage pumping station (JVBCSPS)
at the JVBC. The JVBCSPS will pump the intercepted dry weather flow from the
JVBC to the existing trunk sewer at Kai Fuk Road. The dry weather flow will then be
conveyed to the Kwun Tong Preliminary Treatment Works for treatment.
1.3
Name of the Project Proponent
1.3.1
Drainage Services Department is the project proponent of this designated project.
1
Associated facilities include penstocks, stoplogs, underground stormwater pumps, screens and desilting
facilities.
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1.4
Location and Scale of Project
1.4.1
The JVBCSPS will be located near Kai Fuk Road in Kowloon Bay within the Kai Tak
Development (KTD) area. The location of the proposed works under the whole project
and the surrounding environs are shown in Figure 1.1. The draft Kai Tak
Recommended Outline Development Plan (RODP) showing the JVBCSPS and its
surrounding areas is shown in Figure 1.2.
1.4.2
The JVBCSPS has a pump rate of 0.5m³/s. The layout plan and sectional plan of the
JVBCSPS are attached in Appendix II. The JVBCSPS is about 9 m high with an
underground structure. The pump sets, inlet chamber and screening facilities will be
installed underground. The site area of the JVBCSPS is about 612 m2. The site area of
the whole project is about 7,700m².
1.4.3
The current situation of the site is concrete paved flat land. No demolition of existing
structure or building in the site is required.
1.5
Rationale for Site Selection
1.5.1
The rationale for site selection is based on the planned land use, vehicular accessibility,
and aesthetic impact. Various sites for the Project have been evaluated and the site as
indicated in Figure 1.1 is considered the most preferred location based on the
following considerations: z
z
z
The Project site is located adjoining the downstream of the JVBC with sufficient
site area;
The site, which is zoned as “Government” (“G”), has been reserved for the
construction of DSD’s desilting compound in the draft Kai Tak RODP. No further
planning permission is required; and
The site is blocked by the elevated Kwun Tong Bypass and hence no significant
visual impact on the surrounding communities, such as the MegaBox, Enterprise
Square III & V, Exchange Tower, etc., is anticipated.
1.6
History of the Project Site
1.6.1
The current Project site is a piece of concrete paved flat land. There is no existing
structure or building at the site. The site was an open sea before the reclamation works
in Year 1968. The site was vacant afterwards and was paved with concrete in around
1998. The site was located at the northern boundary of the south apron of the former
Kai Tak Airport.
1.7
Number and Types of Designated Projects Covered by the Project Profile
1.7.1
The JVBCSPS is classified as a Designated Project under item F.3(b)(iv), Part 1 of
Schedule 2 of the Environmental Impact Assessment Ordinance (EIAO), as the
proposed sewage pumping station has an installed capacity (average dry weather flow)
of more than 2,000 m3 per day and its boundary is less than 150 m from a planned
health care institution.
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1.8
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Name and Telephone Number of Contact Person
Mr. CHONG Chiu Ming
Engineer / Consultants Management 13
Consultants Management Division,
Drainage Services Department
Tel. No.: 2594 7297
Fax. No.: 2827 8526
Email : chiumingchong@dsd.gov.hk
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2.
OUTLINE OF PLANNING AND IMPLEMENTATION PROGRAMME
2.1
Outline of Planning
2.1.1
The Project is delivered by DSD under the agreement no. CE 13/2008 (DS) “Control of
Water Pollution at Jordan Valley Box Culvert – Investigation, Design and
Construction”. The Consultants Management Division of DSD appointed Black &
Veatch Hong Kong Limited (B&V) to undertake the investigation, design and
construction supervision of the Project. The construction will be carried out by a
qualified contractor under the supervision of DSD and B&V. Relevant Divisions of
DSD will operate and maintain the Project.
2.2
Project Implementation and Timetable
2.2.1
The Project is anticipated to commence in early 2010 for completion in Mid 2012. The
tentative implementation programme of the Project is as follows: z
z
z
z
Detailed design – up to September 2009
Tender stage – October 2009 to January 2010
Construction and commissioning – February 2010 to Mid 2012
Operation and maintenance – Mid 2012 onwards
2.3
Interactions with Other Projects
2.3.1
The construction of the Project would be carried out concurrently with the nondesignated elements under the whole project including the desilting compound,
emergency stormwater bypass culvert and associated facilities but will not overlap with
other projects that may induce cumulative environmental impacts.
2.3.2
As consulted with relevant Government departments and utility undertakings, the major
interfacing project is the Kai Tak Development project managed by Civil Engineering
and Development Department (CEDD). The works of the Kai Tak Development
project comprise decontamination works at the south apron of the former Kai Tak
Airport, trunk road works and remaining infrastructure works for the Kai Tak
Development. The decontamination works at the south apron of the former Kai Tak
Airport have been completed. Amongst the remaining works of the Kai Tak
Development project, the major construction works are the trunk road works, which are
anticipated to commence after the completion of JVBCSPS, while the advance works
and remaining infrastructure works of the Kai Tak Development project will be minor
or carried out far away from the Project. Therefore, the construction of the JVBCSPS
will not overlap with other projects that may induce cumulative environmental impacts.
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3.
POSSIBLE IMPACTS ON THE ENVIRONMENT
3.1
Outline of Processes Involved
3.1.1
The major objective of the whole project is to intercept the polluted dry weather flow in
the JVBC. The intercepted flow will be pumped to the trunk sewer at Kai Fuk Road
and conveyed to the Kwun Tong Preliminary Treatment Works for treatment. A tidal
barrier will be constructed to prevent seawater intrusion from the downstream of the
JVBC during the interception process. The interception scheme is illustrated in
Appendix I. There are four main stages of the interception scheme as follows:
(i)
Stage 1: During Wet Weather / Heavy Rainfall During Dry Seasons
During wet weather or heavy rainfall in dry seasons, the tidal barrier will open
automatically to allow discharge of floodwater at the JVBC and no dry weather
flow will be intercepted under these conditions.
(ii)
Stage 2: Tidal Barrier Closed during Dry Weather (1st Stage of Removal of
Residual Flood water)
During dry weather, the tidal barrier will be closed. The residual flood water
trapped at the upstream of the tidal barrier will be pumped to the downstream
of the JVBC via the stormwater pumps.
(iii)
Stage 3: Tidal Barrier Closed during Dry Weather (2nd Stage of Intercepting
Dry Weather Flow)
When the residual flood water is sufficiently drawn down, the stormwater
pumps will stop. The sewage pumps in the JVBCSPS will then pump the dry
weather flow from the JVBC to the trunk sewer at Kai Fuk Road.
(iv)
Stage 4: Desilting Operations
Desilting operations will be carried out to clear the silt trapped in the JVBC
(normally during dry season every year). The silt accumulated inside the
JVBC will be removed from the desilting compound and subsequently disposed
off site.
3.1.2
An emergency stormwater bypass culvert will be constructed to allow emergency
discharge of the floodwater inside the JVBC in case of failure of the tidal barrier.
3.1.3
The dry weather flow intercepted from the JVBC will be conveyed to the proposed
sewage pumping station (JVBCSPS) via gravity sewers. The dry weather flow will
pass through a screening chamber for removal of large objects before entering the
JVBCSPS. The screened flow will then enter into a wet well where the dry weather
flow will be pumped out of the pumping station to the adjacent trunk sewer along Kai
Fuk Road by submersible pumps. The dry weather flow in this trunk sewer will be
conveyed to the Kwun Tong Preliminary Treatment Works for treatment.
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3.1.4
The JVBCSPS comprises an underground covered inlet chamber, a mechanical screen,
wet well with submersible sewage pumps, an underground flow meter & valve
chamber, control panel & switchboard, ventilation systems, a deodorizing system, and
one overhead crane for maintenance of sewage pumps. The proposed JVBCSPS will
be fully enclosed by a concrete structure.
3.1.5
The potential environmental impacts during construction and operation phases are
identified as shown below:
3.2
Possible Environmental Impacts during Construction Phase
Air Quality
3.2.1
Dust may be generated during construction of the JVBCSPS which may have potential
impact to nearby air sensitive receivers (ASRs) (see Figure 4.1), in particular during
excavation or handling and transportation of construction and demolition (C&D)
materials.
3.2.2
The amount of C&D materials to be excavated for the JVBCSPS is about 5,000 m3 and
the excavation period will last for about 2 months. Assuming that the construction
period is 10 hours per day, the average volume of excavated materials to be handled
per hour would be about 10 m3 (assuming 26 working days per month). The average
hauling volume of the truck is 6 m3 per trip. Therefore, about 2 trips per hour would be
required for handling the excavated materials.
3.2.3
All the trucks will be properly covered. The Project site will be regularly sprayed with
water four times per construction day and dust suppression measures stipulated in the
Air Pollution Control (Construction Dust) Regulation will be applied. No adverse dust
impact is expected at nearby ASRs due to construction of the Project.
3.2.4
The construction of other works under the whole project such as the desilting
compound, emergency stormwater bypass culvert and associated facilities would be
carried out concurrently with the Project. The amount of C&D materials to be
excavated for these works would be about 5,800 m3. As the estimate amount of
excavated materials for the Project and the desilting compound is small (about 4 trips
per hour in total would be required for handling the excavated materials) during
construction phase, no insurmountable cumulative dust impact is anticipated.
3.2.5
Any cumulative dust impact can be minimized by good site practices and management,
e.g. avoid overlapping of dusty construction activities (excavation and backfilling) for
the desilting compound, emergency stormwater bypass culvert and associated facilities
with the major dusty construction activities of the Project, regular water spraying, and
implementation of dust suppression measures. No adverse cumulative construction
dust impact is expected.
Water Quality
3.2.6
Potential water quality concerns during construction phase are site runoff and sewage
generated from construction workforce. With the implementation of good site
practices and recommended mitigation measures, adverse water quality impact during
the construction phase due to the Project is not anticipated.
3.2.7
Any cumulative water quality impact arising from the construction of desilting
compound, emergency stormwater bypass culvert and associated facilities can be
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effectively controlled through the implementation of good site practices and
management. No adverse cumulative water quality impact is expected.
Noise
3.2.8
Noise impact during the construction phase may result from the construction activities
with the use of powered mechanical equipment. Existing and planned noise sensitive
receivers (NSRs) can be identified in the vicinity of the site (see Table 4.1 for details).
According to site survey and verification, all the nearby NSRs are not relying on
opened window for ventilation. Therefore, no NSR will be affected by the construction
activities of the Project. No adverse noise impact during construction of the Project is
expected.
Waste Management
3.2.9
C&D materials and waste such as excavated spoil (soil and rock), unusable concrete
and grout, wood, metal scraps, equipment parts and packaging materials will be
generated. Small amount of chemical wastes from the maintenance of plant/powered
mechanical equipment are also expected. With the implementation of good
construction site management practice, environmental impact due to waste generated
from the Project would be minimal.
3.2.10
About 5,000 m3 of C&D materials will be generated during construction of the Project.
Most of the C&D materials are suitable for reuse as public fill and some (about 250 m3)
will be reused onsite. The estimated volume of C&D materials to be disposed at
landfill is less than 100 m3. Provided that the chemical waste is handled and disposed
of in accordance with the Waste Disposal (Chemical Waste) (General) Regulation,
adverse environmental impacts is not anticipated. The amount of general refuse that
will be generated from construction workforces is insignificant in view of limited
construction activities.
3.2.11
The construction of other works under the whole project such as the desilting
compound, emergency stormwater bypass culvert and associated facilities would be
carried out concurrently with the Project. The amount of excavated materials for these
works is about 3,900 m3 soil materials and 1,900 m3 concrete. About 290 m3 excavated
soils will be reused onsite and the remaining C&D materials will be delivered to Public
Filling Reception Facilities for reuse. With the implementation of waste management
measures and good site practices in waste handling, disposal and transportation, no
adverse cumulative environmental impact is expected.
Land Contamination
3.2.12
Contaminated land refers to the land which has been polluted by hazardous substances
as a result of industrial operations carried out on the site over a number of years. These
contaminants, if present, may pose hazardous risks or cause adverse effects to the land
users and the nearby environment. In order to identify and evaluate the potential
contamination impacts associated with the Project, the current and historical land uses
for the Project site were reviewed. Sources of information include aerial photographs
from Lands Department, records and photographs from site visit, and land uses
information of the Project site and neighboring.
3.2.13
The aerial photo taken in 1963 showed that the Project site was an open sea. From the
aerial photo of 1968, the site was found to be on reclaimed land. The site and
surrounding area was found to be a piece of vacant flat land. As shown in the aerial
photos in 1983, single storey building structures were found over 100 m to the south
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east of the Project site. The aerial photo taken in 1990 showed that the building
structures was gone and the site remained a piece of vacant flat land. As shown in the
aerial photos in 1998, the site was concrete paved.
3.2.14
Land contamination assessment for the south apron of former Kai Tak Airport, which
covered most of the site for the Project, has been conducted by CEDD. An approved
EIA report (EIA-139/2007) “Decommissioning of Former Kai Tak Airport Other Than
the North Apron” (the EIA Report) was prepared by CEDD to identify the land
contaminated areas. According to the report, no land contamination was identified
within the Project site.
3.2.15
Site inspection was conducted on 9 February 2009 to identify any contamination
hotspots within and adjacent to the Project site. As observed on site, the Project site
was a piece of vacant concrete paved flat land. Petrol filling stations occupied by three
different companies were found adjacent to the Project site and the closest petrol filling
station was approximately 70 m northwest from the boundary of the site. According to
topographic map, the petrol filling stations have been present for more than 10 years.
The locations of the petrol filling stations are shown in Figure 1.1 and photos taken
during the site inspection are provided in Appendix VII. As observed from the site
inspection, the ground of the petrol filling stations was paved with concrete and no
apparent crack and stain was observed. Indirect contamination from the petrol filling
stations to the Project site through such a long distance is unlikely. Moreover, based on
the EIA Report, no soil contamination was identified near the petrol filling stations.
3.2.16
No residual impact on land contamination is expected during construction of the
Project.
Landscape and Visual
3.2.17
Assessment of landscape and visual impact of the proposed structure on the Project site
has been made according to the Landscape Impact Assessment Study Area. The
existing and planned landscape character units and visual sensitive receiver (VSR) in
the vicinity of proposed JVBCSPS are shown in Figures 3.1a and Figure 3.1b
respectively.
3.2.18
The areas surrounding the Project can be grouped into two regions which are separated
by Kai Fuk Road. The region to the northeast side of Kai Fuk Road mainly consists of
commercial office buildings, shopping mall, training centre, and industrial buildings.
The Project will be blocked by the elevated Kwun Tong Bypass and hence no
significant visual impact on the communities, such as the MegaBox, Enterprise Square
III & V, Exchange Tower and the Sheung Yuet Road Construction Industry Council
Training Centre, is expected.
3.2.19
The region to the southwest of Kai Fuk Road includes the Project site and its vicinity
which is mainly a piece of vacant concrete paved flat land. No existing sensitive
receiver in respect of Landscape and Visual Impact Assessment (LVIA) is identified in
this region. However, this region is undergoing development and planned visual VSRs
should be considered. Based on the draft Kai Tak RODP, undesignated Government
lands “G” and a hospital are planned to the south west and southeast of the Project site
respectively. Moreover, a new Cruise Terminal is being planned at the former Kai Tak
Airport runway, together with commercial and residential developments at the area.
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Landscape Resources
3.2.20
The Project site is a vacant “Government” site reserved for the construction of DSD’s
desilting compound. The location of the landscape resources (LR) within the whole
project are shown in Figure 3.2.
3.2.21
According to the tree survey, 28 nos. of trees were identified within the whole project
area. All of them are exotic species commonly planted for ornamental purpose in Hong
Kong. The most abundant tree species is Spathodea campanulata (15 nos.). The tree
survey plan and assessment schedule are shown in Appendix III. No trees will be
affected by the Project (i.e. JVBCSPS).
3.2.22
The construction of the non-designated elements under the whole project including
desilting compound, emergency stormwater bypass culvert and associated facilities will
be carried out adjoining to the Project. According to the tree survey, 23 nos. of trees
may be affected by the construction of these works. Most of the trees have fair to poor
in form and health condition with low to medium amenity value. No endangered
species or Registered Old and Valuable Trees (OVT) are identified. The landscape
resources have a medium landscape value and sensitivity to change.
Landscape Character Area
3.2.23
The region to the northeast side of Kai Fuk Road inclusive is highly developed area.
The landscape character area for this region is dominated by the former Kai Tak
Airport site and industrial urban landscape. The region to the southwest of Kai Fuk
Road includes the Project site and its vicinity is mainly vacant concrete paved flat land
and without any special landscape features. The Landscape Character Map of Hong
Kong describes this area as ‘Reclamation/Ongoing Major Development Landscape’.
According to the existing condition of the Project site, the sensitivity to change is slight.
Visual Sensitive Receiver
3.2.24
The VSRs in the vicinity of the Project mainly consist of users of commercial office
buildings, shopping mall, training centre, and industrial buildings who have no direct
line of sight of the Project site due to the elevated Kwun Tong Bypass.
3.2.25
During construction phase, temporary visual impact may arise from construction of the
Project and the proposed desilting compound, emergency stormwater bypass culvert
and associated facilities. Temporary stockpiling of excavated and building materials,
construction site hoardings, construction power mechanical equipment, nighttime
lighting, and construction traffic may have moderate visual impact to the VSRs.
3.2.26
Mitigation measures will be implemented to minimize the visual impact during the
construction phase. Measures such as erection of hoardings with outlook matching
with surrounding landscape and minimization of any night time glaring are proposed to
mitigate potential visual impacts. The impacts to the VSRs would be negligible after
implementation of the mitigation measures.
Ecology
3.2.27
The Project site is a piece of concrete paved vacant flat land. The Project site is not
surrounded by areas of ecological value (e.g. woodland and natural stream). No
adverse ecological impact is expected.
Cultural Heritage
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3.2.28
No impacts on historical monuments or buildings are expected during the construction
stage.
3.3
Possible Environmental Impacts during Operation Stage
Air Quality
3.3.1
Air quality impact arising during operation stage is the potential odour nuisance from
the JVBCSPS. Odour nuisance may arise from the screen house and wet well of the
JVBCSPS.
3.3.2
Measures will be implemented to minimize air quality impact. For example, potential
odour emission areas such as inlet chamber, screen chamber and wet well of the
JVBCSPS will be installed underground and enclosed inside a reinforced concrete
structure. Deodourizer with forced ventilation will also be installed to remove the
odour.
3.3.3
There may be potential cumulative odour impact due to odour emission at the desilting
compound. Apart from the desilting compound, there is no other odour emission
source within the 500 m of the area of the Project site. The KTAC itself is also a
potential odour source in the vicinity, however, the water quality of the KTAC will be
improved after implementation of the Project and hence no cumulative odour impact is
expected.
3.3.4
The odour emission sources in the desilting compound will be enclosed by a reinforced
concrete structure with deodorization. No adverse cumulative odour impact on the
surrounding ASRs is expected.
Water Quality
3.3.5
During normal operation of the proposed interception scheme, the tidal barrier will be
closed to intercept the polluted dry weather flow at the JVBC. As such, the water
quality of the KTAC will be improved after implementation of the Project.
3.3.6
During rainstorm events, the tidal barrier will be opened to allow discharge of the
floodwater from the JVBC to the KTAC to avoid flooding. As the flow will be diluted
by the huge volume of floodwater, the water quality impact to the KTAC is considered
negligible.
3.3.7
Since the dry weather flow is currently being discharged to the KTAC, the
implementation of the proposed interception scheme will not bring the water quality
worse than present conditions.
Noise
3.3.8
Fixed plant noise from e.g. mechanical screen, pump sets and extraction fans of
deodourizer are potential noise sources during operation of the sewage pumping station.
As such, the pump sets and screening facilities of the JVBCSPS will be located
underground and housed within a reinforced concrete structure. No adverse fixed plant
noise impact is expected at the NSRs of the Project. Detailed operation noise impact
assessment is at Appendix IV.
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3.3.9
Project Profile
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The desilting compound and associated facilities will be operated concurrently with the
Project. Fixed plant noise, e.g. from the extraction fans for deodourizer and the
electrical actuators for the tidal barrier, are potential noise sources which may cause
cumulative impact to the NSRs if no mitigation measures are implemented. In order to
avoid cumulative noise impact, all the plants except the ventilation facilities for the
desilting compound will be housed within a reinforced concrete structure. As such, no
adverse cumulative noise impact is expected at the nearby NSRs. Detailed cumulative
operation noise impact assessment is provided in Appendix IV.
Waste Management
3.3.10
Mechanically-raked bar screen will be installed at the inlet of the JVBCSPS to prevent
large solid objects from entering the pumps. A small quantity of screenings will thus
be generated. The screenings will be properly packed and handled within the
JVBCSPS to avoid odour and hygienic nuisance. The screenings will then be
transported and properly disposed at landfills. No adverse environmental impact is
expected during operation stage of the Project.
3.3.11
The silt trapped at the JVBC will be removed and dried at the desilting compound. The
silt will then be transported and properly disposed at landfills. The silt will be
contained inside sealed bags to prevent leakage of foul water during transportation.
The ground at the desilting compound will be cleaned after removal of the silt. With
these measures and practices properly implemented, the cumulative environmental
impact during operation stage would be negligible.
Landscape and Visual
Landscape Resources
3.3.12
Since no tree will be affected by the Project (JVBCSPS), no landscape impact due to
the Project is expected.
3.3.13
The construction of the non-designated elements under the whole project including
desilting compound, emergency stormwater bypass culvert and associated facilities will
be carried out adjoining to the Project. According to the tree survey, 23 nos. of trees
may be affected by the construction of these works. Most of the trees have fair to poor
in form and health condition with low to medium amenity value. No endangered
species or Registered Old and Valuable Trees (OVT) are identified. New trees will be
planted to compensate any tree lost. Trees will be compensated in the ratio of more
than 1 within the site (see Appendix V).
Landscape Character Area
3.3.14
During operation phase, the impact on the landscape character is limited since the
Project site is originally a piece of vacant concrete paved area. The proposed JVBCSPS
will apply mitigation measures, such as screen planting and green roof to mitigate the
impact on the landscape character. The residual impact after mitigation measures will
be slight.
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Visual Sensitive Receiver
3.3.15
Since the Project site is blocked by the elevated Kwun Tong Bypass, no significant
visual impact on the surrounding communities, such as the MegaBox, Enterprise
Square III & V, Exchange Tower and the Sheung Yuet Road Construction Industry
Council Training Centre, is anticipated.
3.3.16
Mitigation measures including careful aesthetic design of the building structures are
proposed to mitigate potential visual impact. The external appearance of the JVBCSPS
and desilting compound will be designed to match with surrounding environment. The
design will also blend with future adjacent developments, e.g. planned hospital,
development on the undesignated Government land, and the new Cruise Terminal
according to the draft Kai Tak RODP. Roof garden and vertical greening features are
also proposed to soften the building mass. In addition, trees will be planted around the
site boundary to minimize potential visual impact. The landscape and visual impact
during operation stage would be negligible with these mitigation measures
implemented. Perspective view of the Project and the proposed landscape and visual
features are at Appendix VI.
Ecology
3.3.17
Adverse ecological impact is not expected during the operation stage of the Project.
Cultural Heritage
3.3.18
No impacts on historical monuments or buildings are expected during the operation
stage of the Project.
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4.
MAJOR ELEMENTS OF THE SURROUDNING ENVIRONMENT
4.1
This section outlines the existing and planned sensitive receivers that are likely to be
affected by the Project during the construction and operational phases.
4.1
Existing Sensitive Receivers and Sensitive Parts of the Natural Environment
(a) Educational Institutions
4.1.1
There is one training centre in the vicinity of the Project site, namely the Sheung Yuet
Road Construction Industry Council Training Centre, which is located at 164 m
northeast to the Project site. Site survey indicated that the classrooms of the training
centre do not rely on opened windows for ventilation.
(b) Industrial Buildings
4.1.2
There are four industrial buildings in the vicinity of the Project site, namely (i) Kai Fuk
Industrial Centre at 81 m north to the Project site; (ii) Hong Leong Industrial Complex
at 124 m north to the Project site; (iii) Po Hong Centre at 128 m northeast to the Project
site; and (iv) Flourish Industrial Building at 164 m northeast to the Project site.
(c) Commercial Buildings
4.1.3
There are three commercial buildings in the vicinity of the Project site, namely (i)
Enterprise Square Five and MegaBox at 147 m east to the Project site; (ii) Enterprise
Square III at 300 m east to the Project site; and (iii) Exchange Tower at 300 m
northeast to the Project site. A commercial building near Wang Kwong Road at 123 m
north to the Project site is under construction. Based on site survey, central ventilation
is provided for all the commercial buildings.
4.2
Planned Sensitive Receivers and Sensitive Parts of the Natural Environment
(a) Institution or Community
4.2.1
A planned hospital is reserved at the three “Government” zoned sites to the south and
southeast of the Project site. The nearest zoning boundary of the planned hospital area
to the proposed sewage pumping station is about 131 m. There is no information on
the development plan of the hospital at this early stage. Since medial staff quarters
may be provided in a hospital with opened window for ventilation, the planned hospital
is considered as a noise and air sensitive receivers for conservative.
(b) Undesignated Government Zoned Sites
4.2.2
According to the draft Kai Tak RODP, the planned site to the west of the proposed
JVBCSPS is undesignated Government land “G”. The “G” zoned site is also considered as
noise and air sensitive receivers for conservative.
(c) A New Cruise Terminal
4.2.3
A new Cruise Terminal is being planned at the former Kai Tak Airport runway,
together with commercial and residential developments at the area. According to the
draft Kai Tak RODP for Kai Tak, the nearest planned sensitive receivers along the
former Kai Tak Airport runway at the north-western portion of the cruise terminal is
over 460 m southwest to the Project site. As such, the planned sensitive receivers of
the new cruise terminal are much far away from the Project site, as compared with the
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sensitive receivers of the planned hospital and the undesignated “Government” zoned
sites. Since the potential environmental impacts due to the Project on those planned
sensitive receivers near the Project site are negligible, no adverse environmental issues
on the new cruise terminal due to the Project is expected.
4.3
Major Elements of the Surrounding Environment
4.3.1
The identified nearest existing and planned air and noise sensitive receivers in the
vicinity of the Project site are summarized in Table 4.1, and their locations are
indicated in Figure 4.1.
Table 4.1
I.D.
Air and Noise Sensitive Receivers in the Vicinity of the Project Site
Sensitive Receiver
Land Use
Noise Planning Daytime
(OZP or draft & Evening / Night Time
Kai Tak RODP) Criteria, dB(A)
Existing Air Sensitive Receivers (No Existing Noise Sensitive Receiver)
TG
Sheung
Yuet
Road
Open Space
-Construction
Industry
Council Training Centre
KFIC
Kai
Fuk
Industrial Other Specified
-Centre
Uses
HL
Hong Leong Industrial Other Specified
-Complex
Uses
PHC
Po Hong Centre
Other Specified
-Uses
FIB
Flourish
Industrial Other Specified
-Building
Uses
MB
Enterprise Square Five Other Specified
-and MegaBox
Uses
ESIII
Enterprise Square III
Other Specified
-Uses
ET
Exchange Tower
Other Specified
-Uses
CB
Commercial building at Other Specified
-Wang Kwong Road
Uses
(under construction)
Planned Noise and Air Sensitive Receiver
PH
Planned Hospital
Government
*65 / 55
(Hospital
Reserved)
G1
Undesignated
Government
*65 / 55
Government Land
(Undesignated)
Nearest Distance to
the boundary of the
JVBCSPS (m)
164
81
124
128
164
147
300
300
123
141
95
Note:
The existing and planned air/noise sensitive receiver locations are shown in Figure 4.1.
Based on site survey and verification, no existing noise sensitive receivers rely on opened windows for ventilation and
thus no construction noise standard is included.
* 5 dB(A) below the appropriate ANL in accordance with the IND-TM
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5.
ENVIRONMENTAL PROTECTION MEASURES TO BE INCORPORATED IN
THE DESIGN AND FURTHER ENVIRONMENTAL IMPLICATIONS
5.1
During Construction Stage of the Project
Air Quality
5.1.1
The air quality impact due to dust generated from the construction works would be
insignificant with the mitigation measures as stipulated in the Air Pollution Control
(Construction Dust) Regulation implemented. The impacts will be minimized by
adoption of proper working methods such as provision of wheel-washing facilities and
regular water spraying, four times per construction day. Relevant specifications will be
incorporated into the works contract.
Water Quality
5.1.2
During construction stage of the Project, the practices outlined in “ProPECC PN1/94
Construction Site Drainage” as well as other good site management practices to avoid
site runoff and minimize the potential water pollution will be implemented. All site
construction runoff will be controlled and silt removal facilities will be provided to
prevent high levels of suspended solids from entering the drainage network. Silt
removal facilities, channels and manholes will be properly maintained and the
deposited silt and grit will be removed regularly, at the onset of and after each
rainstorm events. Earthworks final surfaces will be well compacted and the subsequent
permanent works or surface protection measures will be carried out immediately after
the final surfaces are formed to prevent erosion caused by rainstorms. Appropriate
drainage like intercepting channels will be provided (e.g. along the crest / edge of
excavation) where necessary. The contractor will be required under the contract
specification to ensure that the site is properly managed and deposition of any solid
materials, litter or wastes will not occur in drainage channels or surface waters.
5.1.3
Any debris or rubbish generated on-site will be collected, handled and disposed of
properly to avoid entering nearby stormwater drains or open drainage channels. All
chemical tanks and storage areas will be located as far as possible from existing water
ways and placed on sealed areas, within bunds of a capacity equal to 110% of the
storage capacity of the largest tank. Open stormwater drains and culvert near the works
area shall be covered to block the entrance of large debris and refuse.
Waste Management
5.1.4
The Contractor will be required to sort all C&D materials and waste into different
categories for recycling or disposal at public filling area and landfill as appropriate. To
minimize generation of waste and C&D materials, proper waste management measures
and good site practices in waste handling, disposal and transportation will be
implemented. Disposal of C&D materials will be monitored through the trip-ticket
system as stipulated in ETWB TCW No. 31/2004. All chemical wastes due to
maintenance of equipment will be handled, stored and disposed of properly in
accordance with the requirements of the Waste Disposal (Chemical Waste) Regulation.
General refuse will be stored and disposed of separately from general construction
waste and chemical waste. The storage bins for general refuse will be provided with
lids, which should be kept closed to avoid odour nuisance and wind blown litter. The
general refuse will be removed regularly and disposed of to licensed landfills, no
adverse waste management implication related to handling and disposal of general
refuse is expected.
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Landscape and Visual
5.1.5
The trees in the vicinity of the Project site are of common species and no endangered
tree species have been identified. No existing trees will be affected by the Project.
5.1.6
Tree protection measures and transplanting will be adopted as far as practicable to
prevent damage to the existing trees during construction of other works under the
whole project including the desilting compound, emergency stormwater bypass culvert
and associated facilities. Measures for preservation and protection of existing trees are
described below. The nature of the landscape impact is temporary/short term in nature.
With the implementation of mitigation measures, landscape impact would be
acceptable during construction stage.
z
z
z
z
5.1.7
Any excavation within 2.5 m of a roadside tree will be carried out by hand and no
roots and branches should be severed without agreement with Leisure and Cultural
Services Department (LCSD);
No excavated materials will be stacked directly against the trunk of any tree unless
hoarding is erected to protect the tree;
Storage area for petroleum products and fuel will be located away from any trees
and planting area; and
Any affected planting areas will be reinstated with compensatory planting in
which the design will be agreed by LCSD or relevant government department(s)
before commencement of works.
The location of the Project site is separated by the Kai Fuk Road and Kwun Tong
Bypass from the adjacent industrial and commercial office buildings. Measures to
minimize the potential visual impact such as erection of hoardings with design
matching with surrounding landscape and minimization of night time glaring are
proposed. With the implementation of mitigation measures, no significant landscape
and visual impact is expected during the construction phase of the Project. Summaries
of residual landscape and visual impacts during construction phase of the Project and
the desilting compound are provided in Tables 5.1a and 5.1b respectively.
Table 5.1a Summary of Residual Landscape Impacts during Construction Phase
LR/LCA
LR1 - Existing Trees
LCA1 – Open Space / Vegetated Area
LCA2 – Industrial
LCA3 - Transport Corridor
LCA4 – Former Kai Tak Airport Site
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Unmitigated
Construction Impact
Construction Impact
Threshold
Moderate adverse
Slight adverse
Slight adverse
Slight adverse
Slight adverse
16
Recommended
Landscape
Mitigation
Measures
Para. 5.1.6
Para. 5.1.7
Para. 5.1.7
Para. 5.1.7
Para. 5.1.7
Mitigated
Construction Impacts
Construction Impact
Threshold with Mitigation
Slight adverse
Slight adverse
Slight adverse
Slight adverse
Slight adverse
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Table 5.1b Summary of Residual Visual Impacts during Construction Phase
VSR
MB (existing)
Unmitigated
Construction Impact
Construction Impact
Threshold
Recommended
Visual
Mitigation
Measures
Mitigated
Construction Impacts
Construction Impact
Threshold with Mitigation
Moderate adverse
Para. 5.1.6
& 5.1.7
Slight adverse
Remarks: The construction of the whole project will not overlap with any planned VSRs.
5.2
During Operation Stage of the Sewage Pumping Station
Air Quality
5.2.1
To minimize air quality impact, the potential odour emission areas such as inlet
chamber, screen chamber and wet well of the JVBCSPS will be located underground
with cover, and enclosed by a reinforced concrete structure. In addition, a deodourizer
with forced ventilation will be installed to remove the odour. As have been adopted in
other similar pumping stations, the deodorizer will provide an overall H2S removal
efficiency of 99.5% or higher. In addition, air exhaust from the deodourizer will be
located in the façade and directed away from the existing and planned sensitive
receivers, i.e. the planned hospital at southeast and existing commercial buildings at
northeast to the Project site.
5.2.2
The proposed desilting compound will be enclosed by a reinforced concrete structure to
minimize any cumulative air quality impact. A deodourizer with forced ventilation will
be installed to remove the odour with H2S removal efficiency of 99.5% or higher. Air
exhaust from the deodourizer will be located in the façade away from the planned
hospital at southeast. The deodourizer exhaust locations for the Project and the
proposed desilting compound are provided in Figure 5.1. Given that a negative
pressure is maintained in the aforementioned area and the deodorizing facility is
properly maintained and functioned, it is anticipated that potential air quality impacts
will be properly mitigated. During normal operation, the screening wastes and settled
silt will be removed from the proposed sewage pumping station and desilting
compound. To avoid odour nuisance, the waste will be properly packed and handled
within the buildings and the wastes will be covered during delivery to designated
landfill for disposal.
5.2.3
Since the proposed interception scheme will intercept the polluted dry weather flow at
the JVBC, the water quality and hence the odour problem in the KTAC will be
improved after implementation of the Project. Adverse cumulative odour impact
arising from the KTAC, the Project (JVBCSPS) and desilting compound is not
expected.
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Water Quality
5.2.4
During normal operation of the proposed interception scheme, the tidal barrier will be
closed to intercept the polluted dry weather flow at the JVBC. As such, the water
quality of the KTAC will be improved after implementation of the Project.
5.2.5
During rainstorm events, the tidal barrier will be opened to allow discharge of the
floodwater from the JVBC to the KTAC to avoid flooding. As the flow will be diluted
by the huge volume of floodwater, the water quality impact to the KTAC is considered
negligible.
5.2.6
To minimize any impact due to power and equipment failure of the JVBCSPS,
mitigation measures such as stand-by pump, emergency power supply and telemetry
system will be incorporated. A telemetry system will be provided to transmit signals
showing irregularity or any operational problem of the JVBCSPS to the staff at e.g.
Kwun Tong Preliminary Treatment Works such that immediate actions can be taken.
With these measures incorporated into the design of the JVBCSPS, it is anticipated that
the water quality impact due to failure of the JVBCSPS will be extremely low.
Furthermore, since the dry weather flow is currently being discharged to the KTAC, the
implementation of the proposed interception scheme will not bring the water quality
worse than present conditions.
Noise
5.2.7
To minimize potential noise impacts due to operation of the Project, all the pumps will
be enclosed inside the pumping station building. According to the quantitative
assessment attached in Appendix IV, adverse noise impacts are not anticipated with
this design incorporated.
5.2.8
Cumulative noise impact with the proposed desilting compound, emergency bypass
culvert and associated facilities have been assessed. No adverse cumulative noise
impacts are expected.
Waste Management Implications
5.2.9
The screenings of the sewage should be properly packed in plastic bags. This operation
will be conducted inside the proposed sewage pumping station. The screenings will
then be transported to landfill site for disposal. No adverse environmental impact is
anticipated.
Landscape and Visual
5.2.10
The architecture and landscape features of the project are designed to provide a
coherent environment with the surroundings. Trees will be planted to provide greenery
effect to the Project. Details of architectural and landscape design can be referred to
the Architectural and Landscape Design Scheme as attached in Appendix VI. The
following architectural and landscape design will be adopted. The landscape and visual
impact in the operation phase is considered to be minimal.
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5.2.11
Project Profile
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(i). Architectural Design:
Building Form & Exterior design
z
The building is setback from boundary and in variation of form as to mitigate the
undesirable visual impact from surrounding. The interstitial space between the
building and boundary will be maximized for landscape with various new and
existing plant species. This will replicate the natural landscaping features and not
appear alien in the setting.
z
The building structure of the pumping station designed to give aesthetic pleasing
look and in harmony with the environment. Some structural elements of the
building will be exposed to create some interesting geometrical/vivid effects and to
break the monotonous appearance cause by extensive wall. The architectural design
will match with the surrounding environment, such as landmark buildings and
linear manner of carriageway and footbridge.
Materials and Color
z
z
The design interplay with various materials such as natural terracotta wall cladding
system, spray paint finish & wall tiles finish in different form and in order to create
interesting effect and to break down the scale and proportion.
Warm tone colour may be used to dress the pumping station building as to avoid
giving the building cold effect. Earthy and neutral color scheme is suggested to
give harmony to the environmental.
Greening
z
z
z
5.2.12
Outdoor spaces allows for extensive landscape design;
Wall, parapet and boundary wall planters will be used for vertical greening; and
Greening on roof surfaces keeps the spaces cool by reducing solar heat gain.
(ii). Landscape Design
z
z
z
z
z
Tree planting;
Small shrub and groundcover will be planted to provide visual relief from receptors
on Kwun Tong Bypass;
Tree screen to be provided along the site boundary;
Avenue tree planting will be provided dividing the site to enhance development
with lush greenery;
The proposed planting/greening during operation phase is summarized as below;
and
Location
At grade
On Roof
Vertical Greening
z
JVBCSPS
Desilting Compound
JVBCSPS
Desilting Compound
Trees (nos.)
47
-
Greening (m²)
2,300
550
2,070
150
150
The landscape mitigation measures of the whole project during operation phase will
be maintained and managed by Drainage Services Department.
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5.2.13
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A summary of residual landscape impacts during operation phase of the Project and the
desilting compound are provided in Table 5.2a.
Table 5.2a Summary of Residual Landscape Impacts during Operation Phase
Unmitigated
Operational Impact
LR/LCA
LR1 - Existing Trees
LCA1 – Open Space / Vegetated Area
LCA2 – Industrial
LCA3 - Transport Corridor
LCA4 – Former Kai Tak Airport Site
5.2.14
Mitigated
Operational Impact
Operation Impact
Threshold
Recommended
Landscape
Mitigation
Measures
Operation
Day 1
Operation
Year 10
Moderate adverse
Moderate adverse
Moderate adverse
Moderate adverse
Moderate adverse
Para. 5.2.11
Para. 5.2.11
Para. 5.2.11
Para. 5.2.11
Para. 5.2.11
Slight adverse
Negligible
Negligible
Negligible
Negligible
Negligible
Negligible
Negligible
Negligible
Negligible
A summary of residual visual impacts during operation phase of the Project and the
desilting compound are provided in Table 5.2b.
Table 5.2b Summary of Residual Visual Impacts during Operation Phase
Unmitigated
Operational Impact
VSR
MB (Existing)
GI (Planned)
PH (Planned)
Mitigated
Operational Impact
Operation Impact
Threshold
Recommended
Visual
Mitigation
Measures
Operation
Day 1
Operation
Year 10
Moderate adverse
Moderate adverse
Moderate adverse
Para. 5.2.11,
5.2.12,
Appendix V
Slight adverse
Slight adverse
Slight adverse
Negligible
Slight beneficial
Slight beneficial
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6.
SUMMARY OF POTENTIAL ENVIRONMENTAL IMPACTS AND
MITIGATION MEASURES
6.1.1
The potential environmental impacts and proposed mitigation measures to be
incorporated into the design and construction of the Project are summarized in Table
6.1.
Table 6.1 Summary of Potential Environmental Impacts and Mitigation Measures
Stage &
Location
Construction
Stage /
Construction
Site
Operation
Stage /
Sewage
Pumping
Station
Potential
Mitigation Measures
Environmental
Impact
Minor dust (1) Adopt dust control and suppression measures as
nuisance
stipulated in the Air Pollution Control
(Construction Dust) Regulation.
(2) Water spraying on exposed area and during
excavation.
(3) Provide wheel-washing facilities.
Water
(1) Control construction surface run-off according to
quality
ProPECC PN1/94, EPD’s Practice Note for
impact
Professional Persons, Construction Site Drainage.
(2) All chemical tanks and storage areas will be
provided with locks and placed on sealed areas,
within bunds of a capacity equal to 110% of the
storage capacity of the largest tank.
Minor
(1) Standard waste management measures and good
Waste
site practices in waste handling, disposal and
Impact
transportation will be implemented.
(2) The contractor will be required to sort all C&D
materials and waste into different categories for
reuse on site, recycling and disposal at designated
public fill reception facilities or landfills.
Disposal of C&D materials will be managed
through the trip-ticket system as stipulated in
ETWB TCW No. 31/2004.
(3) All chemical wastes due to maintenance of
equipment will be handled, stored and disposed
of in accordance with the requirements of the
Waste Disposal (Chemical Waste) Regulation.
(4) General refuse will be stored and disposed of
separately from general construction waste and
chemical waste. The storage bins for general
refuse will be provided with lids, which should
be kept closed to avoid odour nuisance and wind
blown litter. General refuse will be removed
regularly and disposed of to landfills.
Minor
(1) Erect site hoardings compatible with surrounding
landscape
environment.
and visual (2) Minimize night-time glaring.
impact
Odour
(1) Potential odour sources will be enclosed.
nuisance
(2) Deodourizer will be installed to remove odour
and the exhaust will be located as far from the
ASRs as possible. The removal efficiency of H2S
by the proposed deodourizer to be installed will
be 99.5%.
(3) The screenings will be properly packed and
handled within the JVBCSPS to avoid odour
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Implement
-ation
Agent
Contractor
Relevant
Section in
the Project
Profile
5.1.1
Contractor
5.1.2
5.1.3
Contractor
5.1.4
Contractor
5.1.5
5.1.7
–
DSD
5.2.1
5.2.3
–
B&V
–
Control of Water Pollution at Jordan Valley Box Culvert
- Sewage Pumping Station
Stage &
Location
Potential
Environmental
Impact
Project Profile
382838/B&V/036/Issue 1
Mitigation Measures
nuisance. The screenings will then be transported
to designated landfills for disposal.
The
screenings will be properly covered during
transportation process.
Water
The water quality of the KTAC will be improved
quality
after implementation of the Project and no impact
during normal operation is anticipated. Measures to
minimize any impact during failure of the sewage
pumps : (1) Standby sewage pumps will be provided.
(2) Dual feed power supply will be provided.
(3) Telemetry system will be applied for monitoring
the operation of the JVBCSPS.
Noise
(1) Pump sets and screening facilities will be
impact
installed inside reinforced concrete structure.
Waste
(1) Screenings will be enclosed and disposed to
generation
landfill site.
Landscape (1) Proper aesthetic design of the Project to match
and
with future environment. Green-roof and wall
visual
planting will be provided to enhance greenery
impact
and match with existing character.
(2) Screen planting will be carried out around the
JVBCSPS providing screening effect to mitigate
landscape and visual impact.
(3) Gate design will match the surrounding planting
area.
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
22
Implement
-ation
Agent
Relevant
Section in
the Project
Profile
DSD
5.2.4
5.2.6
–
DSD
5.2.7
5.2.8
5.2.9
–
DSD
DSD
5.2.11,
5.2.12 &
Appendix
V&VI
B&V
Control of Water Pollution at Jordan Valley Box Culvert
- Sewage Pumping Station
Project Profile
382838/B&V/036/Issue 1
7.
HISTORY OF SIMILAR PROJECTS
7.1.1
The successful cases of similar nature and scale of designated projects for direct
application of Environmental Permit are summarized as follows:
Table 7.1 Previous Direct Application for Environmental Permit for Sewage Pumping Station
EIAO Reference
Designated Project Title
DIR-020/1999
Sewage Pumping Station at Tung Tau Industrial
Area (for PWP Item No. 278CL – Kau Hui
Development Phase I, Engineering Works, Area
16, Yuen Long)
Yuen Long South Sewage Pumping Station (as
part of PWP Item No. 4157DS – Yuen Long
and Kam Tin Sewerage, Stage II, Phase 2 –
Yuen Long South Pumping Station, Rising
Main to Castle Peak Road and Sewers)
PWP Item No. 4274DS – Yuen Long and Kam
Tin Sewerage Stage III – Au Tau Sewage
Pumping Station
Sai Kung Area 4 Sewage Pumping Station
Lam Tsuen Valley Sewage Pumping Station
under Lam Tsuen Valley Sewerage Project
PWP ITEM No. 4338DS – Improvement and
Upgrading of the Sewerage Systems in Sha Tin
/ Ma On Shan New Town – Ma On Shan Area
108 Pumping Station
Agreement No. CE67/94 Tsing Kau and Sham
Tseng Sewerage Scheme Sewage Treatment and
Disposal Facilities – Tsing Lung Tau Pumping
Station
Tai Po Tai Wo Road Sewage Pumping Station
Sewage Interception Scheme in Kowloon City –
Sewage Pumping Stations
DIR-024/1999
DIR-040/2000
DIR-057/2001
DIR-067/2002
DIR-138/2006
DIR-140/2006
DIR-161/2007
DIR-168/2008
DIR-175/2008
Tuen Mun Sewerage - Investigation, Design and
Construction - Western Interceptor Sewer
Sewage Pumping Station
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
23
Pumping Station
Capacity
(ADWF)
5,260 m3/day
Closest
Sensitive
Receiver
35 m
36,900 m3/day
75 m
12,200 m3/day
80 m
7,500 m3/day
5,600 m3/day
34 m
150 m
14,500 m3/day
75 m
4,000 m3/day
25 m
12,100 m3/day
SPS No.1:
60,480 m3/day
SPS No.2:
64,800 m3/day
54,630 m3/day
29 m
SPS No.1
- 21 m
SPS No.2
- 10 m
61 m
B&V
Control of Water Pollution at Jordan Valley Box Culvert
- Sewage Pumping Station
Project Profile
382838/B&V/036/Issue 1
FIGURES
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
B&V
Control of Water Pollution at Jordan Valley Box Culvert
- Sewage Pumping Station
Project Profile
382838/B&V/036/Issue 1
APPENDIX I
LAYOUT AND SECTIONAL
DRAWINGS SHOWING THE
DRY
WEATHER
FLOW
INTERCEPTTION SCHEME
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
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Control of Water Pollution at Jordan Valley Box Culvert
- Sewage Pumping Station
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APPENDIX II
LAYOUT PLAN AND SECTION
OF THE WHOLE PROJECT
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
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Control of Water Pollution at Jordan Valley Box Culvert
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Project Profile
382838/B&V/036/Issue 1
APPENDIX III
TREE
SURVEY
PLAN
ASSESSMENT SCHEDULE
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
AND
B&V
Project Name: Agreement No. CE13/2008 (DS) - Control of Water Pollution at Jordan Valley Box Culvert
工程名稱︰合約編號 CE 13/2008 (DS) - 佐敦谷箱形雨水渠污水截流工程 – 勘察、設計及建造
Project No.:
BV15
工程編號︰
Assessed on:
評估日期
Tree
No.
樹木
編號
Photo
No.
相片
編碼
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T1358
T1360
T1361
T1363
T1365
T1366
T1367
T1369
T1370
T1373
T1374
T1381
T1382
T1390
T1391
T1392
T1393
1
2
3
4
5
6
7
8
9
10
11
1358
1360
1361
1363
1365
1366
1367
1369
1370
1373
1374
1381
1382
1390
1391
1392
1393
November 2008
2008 年11 月
Tree Species
(Botanical Name)
樹木品種
(植物學名稱)
Delonix regia 鳳凰木
Delonix regia 鳳凰木
Spathodea campanulata 火焰木
Spathodea campanulata 火焰木
Spathodea campanulata 火焰木
Spathodea campanulata 火焰木
Spathodea campanulata 火焰木
Melaleuca quinquenervia 白千層
Melia azedarach 苦楝
Spathodea campanulata 火焰木
Spathodea campanulata 火焰木
Spathodea campanulata 火焰木
Spathodea campanulata 火焰木
Spathodea campanulata 火焰木
Bischofia trifoliata 重陽木
Spathodea campanulata 火焰木
Spathodea campanulata 火焰木
Spathodea campanulata 火焰木
Spathodea campanulata 火焰木
Spathodea campanulata 火焰木
Delonix regia 鳳凰木
Delonix regia 鳳凰木
Acacia confusa 台灣相思
Bischofia polycarpa 重陽木
Bischofia polycarpa 重陽木
Bischofia polycarpa 重陽木
Bischofia polycarpa 重陽木
Dead tree 死樹
Tree Assessment Schedule (Affected Trees are outside the Project Area (JVBCSPS))
樹木評估表 (受影響的樹木位處於本工程項目(JVBCSPS)範圍之外)
Tree Size
樹木大小
Form
形態
Health
健康狀況
Amenity
Value
美化價值
Soil level above
root collar
高於根頸
的土壤水平
Overall Height
(M)
整體高度(米)
Crown Spread
(M)
樹冠闊(米)
Trunk Dia
(M)
樹幹直徑(米)
Good 良好
Fair 一般
Poor 不佳
Good 良好
Fair 一般
Poor 不佳
High 高
Medium 中
Low 低
mPD
米(主水平基準以
上)
10.0
10.0
6.0
2.0
2.0
2.0
5.0
4.0
9.0
4.0
4.0
3.5
5.0
5.0
5.0
3.0
3.0
5.0
6.0
4.0
10.0
10.0
8.0
4.5
3.5
3.5
3.5
3.5
12.0
12.0
6.0
1.0
1.0
1.0
3.0
3.0
9.0
3.0
3.0
3.0
3.0
3.0
2.0
2.5
2.5
4.0
6.0
4.0
10.0
12.0
6.0
2.0
1.0
1.0
2.0
1.0
0.47
0.37
0.32
0.14
0.10
0.11
0.24
0.19
0.49
0.22
0.22
0.24
0.23
0.23
0.24
0.16
0.15
0.28
0.40
0.39
0.30
0.43
0.44
0.19
0.11
0.13
0.14
0.14
F (一般)
F (一般)
F (一般)
P (不佳)
P (不佳)
P (不佳)
F (一般)
P (不佳)
G (良好)
F (一般)
F (一般)
F (一般)
F (一般)
F (一般)
F (一般)
P (不佳)
P (不佳)
F (一般)
F (一般)
F (一般)
F (一般)
F (一般)
F (一般)
P (不佳)
P (不佳)
P (不佳)
P (不佳)
-
F (一般)
F (一般)
F (一般)
P (不佳)
P (不佳)
P (不佳)
F (一般)
F (一般)
F (一般)
F (一般)
F (一般)
F (一般)
F (一般)
F (一般)
F (一般)
P (不佳)
P (不佳)
F (一般)
F (一般)
F (一般)
F (一般)
F (一般)
F (一般)
P (不佳)
P (不佳)
P (不佳)
P (不佳)
-
M (中)
M (中)
M (中)
L (低)
L (低)
L (低)
M (中)
L (低)
H (高)
M (中)
M (中)
M (中)
M (中)
M (中)
M (中)
L (低)
L (低)
M (中)
M (中)
M (中)
M (中)
M (中)
M (中)
L (低)
L (低)
L (低)
L (低)
-
4.95
5.04
5.11
5.19
5.19
5.20
5.20
5.57
5.54
5.29
5.31
5.28
5.29
5.29
5.44
5.25
5.16
5.13
5.18
5.13
4.95
4.87
5.07
5.48
5.66
5.48
5.59
5.60
d.
Total (總數)︰
28 trees (棵)
Page 1 of 1
Control of Water Pollution at Jordan Valley Box Culvert
- Sewage Pumping Station
Project Profile
382838/B&V/036/Issue 1
APPENDIX IV
OPERATION NOISE IMPACT
ASSESSMENT
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
B&V
Control of Water Pollution at Jordan Valley Box Culvert
- Sewage Pumping Station
Project Profile
382838/B&V/036/Issue 1
CONTENTS
Page
1.
1.1
1.2
1.3
1.4
1.5
1.6
OPERATIONAL PHASE NOISE IMPACT..................................................................... 1
Introduction ....................................................................................................................... 1
Assessment Criteria ........................................................................................................... 1
The Noisy Equipment for the Proposed Sewage Pumping Station ................................... 2
Noise Sensitive Receiver................................................................................................... 2
Predicated Operational Noise Impact ................................................................................ 3
Cumulative Operational Noise Impact .............................................................................. 3
List of Tables
Table 1.1 Acceptable Noise Levels (ANLs) during Operational Period ..............................1
Table 1.2 PME List for the Proposed Project (JVBCSPS) ...................................................2
Table 1.3 Selected Planned NSRs of the Proposed Project (JVBCSPS) during Operation..3
Table 1.4 PME List of the Desilting Compound ..................................................................3
List of Annex
Annex A
Detailed Calculations of the Operational and Cumulative Noise Levels
June 2009
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B&V
Control of Water Pollution at Jordan Valley Box Culvert
- Sewage Pumping Station
Project Profile
382838/B&V/036/Issue 1
1.
OPERATIONAL PHASE NOISE IMPACT
1.1
Introduction
1.1.1
This section is to assess possible noise impact on the neighboring noise sensitive receivers
during the operation phase of the Project (JVBCSPS). Potential cumulative noise impact
from the powered mechanical equipment (PME) for the desilting compound has also been
addressed.
1.2
Assessment Criteria
1.2.1
Operational noise is controlled under the Noise Control Ordinance (NCO)’s Technical
Memorandum on Noise from Places other than Domestic Premises, Public Places or
Construction Sites (TM-IND).
1.2.2
The subject site and surrounding sensitive receivers are located in the urban area.
Depending on location of noise sensitive receivers (NSRs) in respect to the effect of
influencing factors (IFs), i.e. the Kai Fuk Road (54880 AADT) and Kwun Tong Bypass
from Cheung Yip Street to Kai Yan Street Section (69280 AADT), the Area Sensitivity
Rating is assessed as “B” or “C”. The appropriate acceptable noise levels (ANLs) for the
selected NSRs at different time periods are summarized in Table 1.1.
Table 1.1 Acceptable Noise Levels (ANLs) during Operational Period
Time Period
Area Sensitivity Rating
Day (0700 to 1900 hours)
Evening (1900 to 2300 hours)
Night (2300 to 0700 hours)
Acceptable Noise Levels (ANLs), dB(A)
“B”
“C”
65
70
55
60
1.2.3
Furthermore, the TM-EIAO requires a level of 5 dB(A) below the appropriate ANLs for
new proposed equipment. Therefore, 60 dB(A) and 50 dB(A) in time period of 07:00-23:00
and 23:00-07:00 respectively have been adopted in this assessment for the NSR with Area
Sensitivity Rating “B” and 65 dB(A) and 55 dB(A) for the NSR with Area Sensitivity
Rating “C”, which are also considered to be lower than the prevailing background noise
level in the concerned area.
1.2.4
In any event, the NSRs assumed in this Project Profile are for indicative assessment only. It
should be noted that fixed noise sources are controlled under Section 13 of the NCO. At the
time of investigation, the Noise Control Authority shall determine noise impact from
concerned fixed noise sources on the basis of prevailing legislation and practices being in
force, and taking account of contemporary conditions / situations of adjoining land uses.
Nothing in this Project Profile shall bind the Noise Control Authority in the context of law
enforcement against all the fixed noise sources being assessed.
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
App IV - 1
B&V
Control of Water Pollution at Jordan Valley Box Culvert
- Sewage Pumping Station
Project Profile
382838/B&V/036/Issue 1
1.3
The PME for the Proposed Sewage Pumping Station
1.3.1
The list of PME and their Sound Power Level (SWLs) for the proposed Sewage Pumping
Station (JVBCSPS) are given in Table 1.2 below. The equipment used in the noise
calculation was reviewed by the project engineers based on the proposed sewage pumping
station design.
Table 1.2 PME List for the Proposed Project (JVBCSPS)
Equipment
Remarks
Proposed Sewage Pumping Station (JVBCSPS)
Sewage Pump
-Storm Water Pumps
-Mechanical Raked Bar Screens
-Extraction fans for deodourization unit
-Extraction fans for ventilation
-Electrical Actuators for Gate Valves for
Actuators will be
Penstocks
operated only when
pumps are idled
Electrical Actuators for Gate Valves for
-Pump Valves
Overhead Crane for Sewage Pumps
--
Number
*SWL/Item dB(A)
1
3
1
1
6
92
92
89
89
79
2
78
2
1
78
88
* SWL for sewage pump, storm water pumps, mechanical raked bar screens, extraction fans for deodorization and
extraction fan for ventilation are reference to the approved Project Profile in estimating for the SWL; and SWL for
electrical actuators for gate valves and overhead crane are based on the Enquired Information from the Suppliers; The
overhead crane shall be used during the maintenance or replacement work only.
1.4
Noise Sensitive Receiver
1.4.1
The classrooms of the existing Sheung Yuet Road Construction Industry Council
Training Centre located north-east to the subject site do not rely on opened window for
ventilation which is confirmed with site verification, thus they are not considered as
NSRs during operation phase.
1.4.2
A planned hospital is located immediately south and south-east of the proposed JVBCSPS.
There is no information on the development plan for the planned hospital at this early
planning stage. However, considering medial staff quarters may be provided in a hospital
and they are likely to rely on opened window for ventilation, the planned hospital is,
therefore, considered to be a NSR as conservative approach. The Air Sensitive Rating
for this NSR is “C” by considering the nearby Kai Fuk Road and Kwun Tong Bypass.
1.4.3
According to the approved Kai Tak Outline Zoning Plan No. S/K22/2 dated 6 November
2007, the site to the west of the proposed JVBCSPS is zoned as “G/IC”. Further updating on
the Preliminary Outline Development Plan (PODP) has been undertaken under the Kai Tak
Development Engineering Study and the PODP would be re-named as the draft Kai Tak
Recommended Outline Development Plan (RODP) upon finalization of the land use
proposals. From the draft Kai Tak RODP, the site to the west of the proposed JVBCSPS is
changed from “G/IC” to Undesignated Government land “G”. Therefore, the “G” zoned site
is considered to be a NSR as conservative approach. The Air Sensitive Rating for this NSR
is “C” by considering the nearby Kai Fuk Road and Kwun Tong Bypass.
1.4.4
The selected planned NSRs and the corresponding noise limit are shown in Table 1.3. For
the planned hospital and the nearest undesignated “G” zoned, the location is selected at 95 m
from the nearest zoned boundary in respect to the JVBCSPS.
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
App IV - 2
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Project Profile
382838/B&V/036/Issue 1
Table 1.3 Selected Planned NSRs of the Proposed Project (JVBCSPS) during Operation
NSR
Description
PH
G1
Planned Hospital
Planned “G” Zoned Site
Acceptable Noise Level (ANL-5) dB(A)
Daytime &
Night Time
Evening
65
55
65
55
1.5
Predicted Operation Noise Impact
1.5.1
The noise level at the possible nearest NSRs has been assessed. Detailed calculations of the
operational noise levels are presented in Annex A. Directivity of the noise sources has not
been taken into account.
1.5.2
The noise levels at the nearest sensitive receiver for the planned hospital (PH) and the
nearest undesignated “G” zoned site (G1) are predicted to be 45 dB(A) and 49 dB(A)
respectively that are complied with the day-time and night-time noise criteria of 65 dB(A)
and 55 dB(A).
1.5.3
The predicted operational noise levels for the JVBCSPS comply with the noise criteria in the
TM-EIAO. No further mitigation measure is required.
1.6
Cumulative Operational Noise Impact
1.6.1
The desilting compound would be operated at the same time to the proposed sewage
pumping station. Fixed plant noise impact from the extraction fans for deodourizer,
ventilation facilities, and the electrical actuators for penstocks are potential noise sources
during operation of the desilting compound which would cumulate the impact from the
proposed sewage pumping station. Apart from the ventilation facilities, all the plant is
housed within a reinforced concrete structure.
1.6.2
The PME list and their Sound Power Level (SWLs) for the proposed desilting compound are
given in Table 1.4 below. The equipment used in the noise calculation was reviewed by the
project engineers based on the proposed sewage pumping station design.
Table 1.4 PME List of the Desilting Compound
Equipment
Extraction fans for deodourization unit
Extraction fans for ventilation
Electrical Actuators for Penstocks
Overhead Crane for Desilting Chamber
Overhead Crane for Tidal Barrier Chamber
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
App IV - 3
Number
1
5
14
1
1
*SWL/Item dB(A)
89
79
78
88
88
B&V
Control of Water Pollution at Jordan Valley Box Culvert
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Project Profile
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1.6.3
Detailed calculations of the cumulative noise levels are presented in Annex A. Directivity of
the noise sources has not been taken into account.
1.6.4
The cumulative noise levels at the nearest sensitive receiver for the planned hospital (PH)
and the undesignated “G” zoned site are predicted to be 49 dB(A) and 51 dB(A) respectively
that are complied with the day-time and night-time noise criteria of 65 dB(A) and 55 dB(A).
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
App IV - 4
B&V
Annex A Sample Calculation Sheets for the Worst Unmitigated Operational Noise Impact on NSR
(Operation of JVBCSPS only)
NSR: Planned NSR at Undesignated Government Land (G1)
(1)
Remark
Number of Items
@SWL/Item Total SWL Enclosed Screening Reduction* Distance Distance Corr. % ontime
Items
Operate
dB(A)
dB(A)
dB(A)
(m)
dB(A)
(%)
JVBCSPS
Sewage Pumps (SSP)
1
92
92
Partially
10
95.0
48
100
Storm Water Pumps (SWP)
3
92
97
Partially
10
95.0
48
100
Mechanical Raked Bar Screens (B)
1
89
89
Partially
10
95.0
48
100
Extraction fans for deodourization unit (EF)
1
89
89
Nil
0
95.0
48
100
Extraction fans for ventilation (EFV)
6
79
87
Nil
0
95.0
48
100
Electrical Actuators for Penstocks (GVP)
2
78
81
Partially
10
95.0
48
100
Actuators operate only
Electrical Actuators for Gate Valves for Pump Valves (GVPV)
2
78
81
Partially
10
95.0
48
100
when pumps are idled
Overhead Crane for Sewage Pumps (CS)
1
88
88
Partially
10
95.0
48
100
The above equipment list for the JVBCSPS are based on project engineer design
# with façade correction of 3dB(A)
Total
*Partially screening due to available of lourve at the façade facing to the nearest NSR. All equipment are in enclosed structure
@SWL for Sewage Pump, Storm Water Pump, Mechanical Raked Bar Screens, Extraction fans for deodourization unit and Extraction Fans for Ventilation are based on the approved Project Profile list in Table 7.1
SWL for Electrical Actuators for Gate Valves and Overhead Crane based on the Enquired Information from the Suppliers
The overhead Crane shall be used during the maintenance or replacement work only
(1)
- Distance from the Receiver to the Notional Noise Source Position
#Total SWL
dB(A)
37
42
34
44
42
26
26
33
49
(Operation of JVBCSPS and desilting compound)
NSR: Planned NSR at Undesignated Government Land (G1)
(1)
Remark
Number of Items
@SWL/Item Total SWL Enclosed Screening Reduction* Distance Distance Corr. % ontime
Items
Operate
dB(A)
dB(A)
dB(A)
(m)
dB(A)
(%)
JVBCSPS
Sewage Pumps (SSP)
1
92
92
Partially
10
95.0
48
100
Storm Water Pumps (SWP)
3
92
97
Partially
10
95.0
48
100
Mechanical Raked Bar Screens (B)
1
89
89
Partially
10
95.0
48
100
Extraction fans for deodourization unit (EF)
1
89
89
Nil
0
95.0
48
100
Extraction fans for ventilation (EFV)
6
79
87
Nil
0
95.0
48
100
Electrical Actuators for Penstocks (GVP)
2
78
81
Partially
10
95.0
48
100
Actuators operate only
Electrical Actuators for Gate Valves for Pump Valves (GVPV)
2
78
81
Partially
10
95.0
48
100
when pumps are idled
Overhead Crane for Sewage Pumps (CS)
1
88
88
Partially
10
95.0
48
100
Desilting compound
Extraction fans for deodourization unit (EF)
1
89
89
Nil
0
93.5
47
100
Extraction fans for ventilation (EFV)
5
79
86
Nil
0
93.5
47
100
Electrical Actuators for Penstocks
14
78
89
Partially
10
93.5
47
100
Overhead Crane for Desilting Chamber
1
88
88
Partially
10
93.5
47
100
Overhead Crane for Tidal Barrier Chamber
1
88
88
Partially
10
93.5
47
100
The above equipment list for the JVBCSPS and Desilting Compound are based on project engineer design
# with façade correction of 3dB(A)
Total
*Partially screening due to available of lourve at the façade facing to the nearest NSR. All equipment are in enclosed structure
@SWL for Sewage Pump, Storm Water Pump, Mechanical Raked Bar Screens, Extraction fans for deodourization unit and Extraction Fans for Ventilation are based on the approved Project Profile list in Table 7.1
SWL for Electrical Actuators for Gate Valves and Overhead Crane based on the Enquired Information from the Suppliers
The overhead Crane shall be used during the maintenance or replacement work only
(1)
- Distance from the Receiver to the Notional Noise Source Position
#Total SWL
dB(A)
37
42
34
44
42
26
26
33
45
42
35
34
34
51
Annex A Sample Calculation Sheets for the Worst Unmitigated Operational Noise Impact on NSR
(Operation of JVBCSPS only)
NSR: Planned Hospital (PH)
(1)
Remark
Number of Items @SWL/Item Total SWL Enclosed Screening Reduction* Distance Distance Corr. % ontime #Total SWL
Items
Operate
dB(A)
dB(A)
dB(A)
(m)
dB(A)
dB(A)
(%)
JVBCSPS
Sewage Pumps (SSP)
1
92
92
Partially
10
141.0
51
100
34
Storm Water Pumps (SWP)
3
92
97
Partially
10
141.0
51
100
39
Mechanical Raked Bar Screens (B)
1
89
89
Partially
10
141.0
51
100
31
Extraction fans for deodourization unit (EF)
1
89
89
Nil
0
141.0
51
100
41
Extraction fans for ventilation (EFV)
6
79
87
Nil
0
141.0
51
100
39
Electrical Actuators for Penstocks (GVP)
2
78
81
Partially
10
141.0
51
100
23
Actuators operate only
Electrical Actuators for Gate Valves for Pump Valves (GVPV)
2
78
81
Partially
10
141.0
51
100
23
when pumps are idled
Overhead Crane for Sewage Pumps (CS)
1
88
88
Partially
10
141.0
51
100
30
The above equipment list for the JVBCSPS are based on project engineer design
# with façade correction of 3dB(A)
Total
45
*Partially screening due to available of lourve at the façade facing to the nearest NSR. All equipment are in enclosed structure
@SWL for Sewage Pump, Storm Water Pump, Mechanical Raked Bar Screens, Extraction fans for deodourization unit and Extraction Fans for Ventilation are based on the approved Project Profile list in Table 7.1
SWL for Electrical Actuators for Gate Valves and Overhead Crane based on the Enquired Information from the Suppliers
The overhead Crane shall be used during the maintenance or replacement work only
(1)
- Distance from the Receiver to the Notional Noise Source Position
(Operation of JVBCSPS and desilting compound)
NSR: Planned Hospital (PH)
(1)
Remark
Number of Items @SWL/Item Total SWL Enclosed Screening Reduction* Distance Distance Corr. % ontime #Total SWL
Items
Operate
dB(A)
dB(A)
dB(A)
(m)
dB(A)
dB(A)
(%)
JVBCSPS
Sewage Pumps (SSP)
1
92
92
Partially
10
141.0
51
100
34
Storm Water Pumps (SWP)
3
92
97
Partially
10
141.0
51
100
39
Mechanical Raked Bar Screens (B)
1
89
89
Partially
10
141.0
51
100
31
Extraction fans for deodourization unit (EF)
1
89
89
Nil
0
141.0
51
100
41
Extraction fans for ventilation (EFV)
6
79
87
Nil
0
141.0
51
100
39
Electrical Actuators for Penstocks (GVP)
2
78
81
Partially
10
141.0
51
100
23
Actuators operate only
Electrical Actuators for Gate Valves for Pump Valves (GVPV)
2
78
81
Partially
10
141.0
51
100
23
when pumps are idled
Overhead Crane for Sewage Pumps (CS)
1
88
88
Partially
10
141.0
51
100
30
Desilting compound
Extraction fans for deodourization unit (EF)
1
89
89
Nil
0
94.0
47
100
45
Extraction fans for ventilation (EFV)
5
79
86
Nil
0
94.0
47
100
42
Electrical Actuators for Penstocks
14
78
89
Partially
10
94.0
47
100
35
Overhead Crane for Desilting Chamber
1
88
88
Partially
10
94.0
47
100
34
Overhead Crane for Tidal Barrier Chamber
1
88
88
Partially
10
94.0
47
100
34
The above equipment list for the JVBCSPS and Desilting Compound are based on project engineer design
# with façade correction of 3dB(A)
Total
49
*Partially screening due to available of lourve at the façade facing to the nearest NSR. All equipment are in enclosed structure
@SWL for Sewage Pump, Storm Water Pump, Mechanical Raked Bar Screens, Extraction fans for deodourization unit and Extraction Fans for Ventilation are based on the approved Project Profile list in Table 7.1
SWL for Electrical Actuators for Gate Valves and Overhead Crane based on the Enquired Information from the Suppliers
The overhead Crane shall be used during the maintenance or replacement work only
(1)
- Distance from the Receiver to the Notional Noise Source Position
Control of Water Pollution at Jordan Valley Box Culvert
- Sewage Pumping Station
Project Profile
382838/B&V/036/Issue 1
APPENDIX V
TREE PLANTING PROPOSAL
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
B&V
Control of Water Pollution at Jordan Valley Box Culvert
- Sewage Pumping Station
Project Profile
382838/B&V/036/Issue 1
APPENDIX VI
PERSPECTIVE VIEW OF THE
PROPOSED JVBCSPS WITH
LANDSCAPE AND VISUAL
MITIGATION MEASURES
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
B&V
[CP407]C:\REAL_JOB\382823_0201_ET\TITLE.CDR\JUNE09
樹木
灌木
鋪地植物
Planting Images
植物圖像
R
BLACK & VEATCH HONG KONG LIMITED
Control of Water Pollution at Jordan Valley Box Culvert
- Sewage Pumping Station
Project Profile
382838/B&V/036/Issue 1
APPENDIX VII
SITE PHOTOS FOR THE
EXISTING PETROL FILLING
STATIONS
June 2009
[JVBC FINAL PP Iss 1 (18 Jun 09).doc]
B&V
Control of Water Pollution at Jordan Valley Box Culvert – Sewage Pumping Station
Project Profile
382838/B&V/036/Issue1
The three petrol filling stations at northwest from the Project Site
A view of “Shell” Petrol Filling Station found that it was concrete paved and no apparent
crack and stain was observed.
June 2009
[PP Appendix_VII FIN Issue 1 (Eng).doc]
1
B&V
Control of Water Pollution at Jordan Valley Box Culvert – Sewage Pumping Station
Project Profile
382838/B&V/036/Issue1
A view of “Caltex” Petrol Filling Station found that it was concrete paved and no apparent
crack and stain was observed.
A view of “ Esso” Petrol Filling Station found that it was concrete paved and no apparent
crack and stain was observed.
June 2009
[PP Appendix_VII FIN Issue 1 (Eng).doc]
2
B&V