Project Profile

for

Fill Bank at Tuen Mun Area 38

 

Reference      :

 

R1182F.02

 

Client             :

 

Civil Engineering Department

 

Date                :

 

November 2002

 

For and on behalf of CH2M HILL (China) Limited:

 

Checked by   :

 

Prepared by    :

 

Calvin Chiu

Consultant

 

Eden Ngan

Senior Consultant

 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


 

 

 

 


TABLE OF CONTENTS

1.            Basic Information_ 1

1.1     Project Title_ 1

1.2     Purpose and Nature of the Project 1

1.3     Name of the Project Proponent 3

1.4     Location and Scale of the Project 4

1.5     Number and Types of Designated Projects to be covered by the Project Profile_ 4

1.6     Name and Telephone Number of Contact Persons 4

2.            OUTLINE OF PLANNING AND IMPLEMENTATION PROGRAMME_ 5

2.1     How will the Project be Planned and Implemented_ 5

2.2     What is the Project Time-table_ 6

2.3     Are There Any Interactions with Broader Programme Requirements or Other Projects Which shall be Considered_ 7

3.            Major Elements of the Surrounding Environment_ 9

3.1     Existing and Planning Sensitive Receivers and Sensitive Parts of the Natural Environment which might be affected by the Proposed Project 9

3.2     Major Elements of the Surrounding Environment and Existing and/or Relevant Past Land use(s) on site which might affect the Area in which the Project is Proposed_ 9

4.            Possible Impact on the Environment_ 10

4.1     Outline any Processes involved, Including Process Flow Diagrams, Site Plans, Storage Requirements, and Information on Emissions and Discharges 10

4.2     Air Quality Impact 10

4.3     Noise Impact 11

4.4     Water Quality Impact 11

4.5     Landfill Gas Hazard_ 14

4.6     Landscape and Visual Impact 14

4.7     Waste Management 15

4.8     Ecological Impact 15

5.            Environmental Protection Measures to be Incorporated_ 16

5.1     Describe Measures to Minimise Environmental Impacts 16

5.2     Comment on the Possible Severity, Distribution and Duration of Environmental Effects 20

5.3     History of Similar Projects 20

5.4     Use of previously Approved EIA Reports 20

6.            Project Summary_ 22

 


 

LIST OF FIGURES

 

Figure 1        Key Plan showing Site Location and Layout Plan showing the Preliminary Design of the Fill Bank  25

Figure 2        Sectional View of the Proposed Fill Bank  26

Figure 3        Preliminary Development Programme of the Fill Bank  27

Figure 4        Longer Term Land Uses in Tuen Mun Area 38 under Planning  28

Figure 5        Extracts of Outline Zoning Plan (S/TM/16) 29

Figure 6        Consultation Zone of the Restored Siu Lang Shui Landfill 30

Figure 7        Truckload Control Zone Recommended as a Dust Control Measure  31

Figure 8        Location of the existing TSP Monitoring Station under Tuen Mun Area 38 Reclamation, Stage 2  32

Figure 9        Existing Traffic Noise Mitigation Measures provided at Lung Fu Road and Wong Chu Road  33

Figure 10      Indicative Locations of the Proposed TSP Monitoring Stations  34

Figure 11      Indicative Locations of the Recommended Control and Impact Water Quality Monitoring Stations  35

Figure 12      Buffer Planting Strip along the Northern Perimeter of the Site  36

 

LIST OF TABLES

 

Table 1-1      Forecast on Public Fill Generation, Public Filling Capacity, and Shortfall in Public Fill Receiving Capacity  2

Table 2-1      Key Activities during the Establishment, Operation and Decommissioning of the Proposed Fill Bank at Tuen Mun Area 38  6

Table 4-1      Water Quality Monitoring Data obtained at NM3  11

Table 5-1      Establishment of Action and Limit Levels for TSP Monitoring  17

Table 5-2      Establishment of Action and Limit Levels for Water Quality Monitoring  18

Table 6-1      Fill Bank Project Summary Table  22

 

 

ATTACHMENT

 

Attachment I        Environmental Protection Measures Incorporated into the Design of the Fill Bank Project

 

 

ANNEXES

 

Annex I                  Fugitive Dust Impact Assessment

Annex II                Statement of Water Quality Objectives (North Western Water Control Zone)

Annex III               Locations of Landfill Gas Monitoring Points and Methane Concentrations monitored in a recent 14 months period

Annex IV               Typical Design of Sand Trap (CED Drawing No. GC 1034)

 

 

 



1.                      Basic Information

1.1                   Project Title

1.1.1              Fill Bank at Tuen Mun Area 38.

 

1.2                   Purpose and Nature of the Project

Background

1.2.1              The local construction industry generates large quantity of Construction and Demolition Material (C&D Material) from activities including civil engineering works, road works, new building construction, demolition activities and building renovation.  Excavated earth, asphalt, building debris, broken rock and concrete form a major portion of the C&D Material.  These materials are inert material and are collectively referred to as “public fill”.

1.2.2              It is the government policy to make beneficial use of public fill generated by the construction industry.  The beneficial use of public fill in reclamation and earth filling projects reduce the demand on general fill and help to conserve natural resources by reducing the demand on earth borrowing activities and marine sand extraction.  Relevant Technical Circulars (TC), including WBTC No. 4/98 Use of Public Fill in Reclamation and Earth Filling Projects, WBTC No. 5/99 Trip-ticket System for Disposal of Construction and Demolition Material and ETWB TC(W) No. 33/2002 Management of Construction and Demolition Material Including Rock, have been issued to promulgate the policy, as measures to maximise the reuse of public fill and minimise the incidences of illegal dumping.

1.2.3              In 2001, the local construction industry generated about 7.9 million cubic metres of C&D Material.  Out of which, 6.6 million cubic metres were reused in public filling areas.   The reuse of public fill relies on programmes of reclamation and earth filling projects.  It is identified not practicable to perfectly match programmes of reclamation and earth filling works with public fill generation of the construction industry.  The consultancy study “Review of the Public Filling Strategy and Programme” commissioned by Civil Engineering Department (CED) completed in 1998 recommended the establishment of fill banks in the territory for temporary storage of public fill when the demand on public fill is low to optimise their beneficial reuse in reclamation and earth filling projects when the demand is high.

 

Urgent Demand on Public Filling Facilities

1.2.4              The public filling capacity provided by the recent Category A reclamation projects, including the reclamation works at Tseung Kwan O Area 137, Pak Shek Kok, Tung Chung Development Phase 3A, Jordan Road Reclamation Phase III were exhausted.  Tuen Mun Area 38 Stage 2 reclamation is the only reclamation project in the territories that is still receiving public fill.  CED identified that even with the public fill receiving capacity provided by the new reclamation projects including Penny’s Bay Reclamation Stage 2, North Tsing Yi Reclamation and Reclamation for Yam O Public Transport Interchange, and Central Reclamation Phase III, etc., there will still be a significant shortfall in public filling capacity from late 2002 to 2005.  Table 1-1 presents a forecast on public fill generation, public filling capacity, and shortfall in public fill receiving capacity from 2002 through 2005.


Table 1-1       Forecast on Public Fill Generation, Public Filling Capacity, and Shortfall in Public Fill Receiving Capacity

Year

2002

2003

2004

 

2005

Forecast on Public Fill generation (Mm3)

6.2

6.5

6.8

7.6

Forecast on Public Filling Capacity (Mm3)

4.4

1.6

2.0

 

7.1

Forecast on Shortfall in Public Fill Receiving Capacity (Mm3)

1.8

4.9

4.8

0.5

Total Shortfall in Public Fill Receiving Capacity from 2002 to 2005 (Mm3)

12

 

1.2.5              In April 2001, the Government put forward the proposal of establishing temporary fill banks for storage of public fill and committed to take all practical steps to ensure the reclamation projects starting before 2005 will proceed under the planned programmes. 

1.2.6              From a review of the location of the planned reclamation sites commencing from 2003 through 2005, location-wise, it was identified appropriate to set up a fill bank in both the Eastern and Western regions of the territory for temporary storage of public fill.  The candidate sites for the establishing the fill banks must be:

·         Of sufficient areas to accommodate the public fill that cannot be immediately reused in reclamation (or earth filling) projects generated from October 2002 to 2005;

·         Strategically located to facilitate and encourage access by the public fill delivery truck drivers. The possible uses of both land-based and marine-based access routes are preferable to allow the truckloads be shared among the road carriageways leading to the fill banks and the public filling barging points.  Selecting a coastal site is also preferable to make possible the effective delivery of stockpiled public fill to reclamation sites by barges without the need of double handling by trucks during the decommissioning of the fill banks;

·         Sufficient buffer shall be provided between the fill bank sites and the nearby sensitive receivers as far as practicable to avoid direct environmental impact due to dust and noise emissions and visual intrusion from the material stockpiling;

·         The site must be available for a sufficient time period to allow public fill intake and subsequent removal. 

1.2.7              Area 38 on the outskirts of Tuen Mun was identified to be the only available site for the establishment of the fill bank in the western side of the territory after a site search process.  On the eastern side of the territory, the available site was identified to be Area 137 in Tseung Kwan O (TKO). This fill bank has commenced operation since October 2002.

1.2.8              It is expected that from 2003 onwards, there will begin a number of reclamation projects, as well as other measures such as recycling and export that are being investigated and implemented that would be able to make use of the public fill temporarily stored at the fill banks.  For example, as part of the overall C&D material management plan, a C&D Material Recycling Facility (hereafter referred to as C&DMRF) has recently been established which is also located in Tuen Mun Area 38 (to the north-west of the proposed fill bank).  The availability of a piece of 35 hectare land in Tuen Mun Area 38 for the operation of the temporary fill bank will facilitate the transportation of the stored C&D material to this C&DMRF during the initial stage of the decommissioning phase of the fill bank when the C&DMRF is still in operation.


1.2.9              By virtue of C.11 in Section C Reclamation, Hydraulic and Marine Facilities, Dredging and Dumping in Schedule 2, Part I of the EIA Ordinance which specifies that a public dumping area of not less than 2 hectare in size is a designated project (DP), the proposed fill bank at Tuen Mun Area 38 is classified as a DP.     

1.2.10           An environmental permit was granted by the Authority for the operation of the fill bank at TKO Area 137.  This Project Profile is prepared to enable the Authority to determine whether the project proponent can proceed directly to apply for an environmental permit for the proposed fill bank at Tuen Mun Area 38.   

 

Do-Nothing Scenario

1.2.11           Without the proposed fill bank at Tuen Mun Area 38, there will be a significant shortfall in public fill receiving capacities in the coming few years.  As a result, a large quantity of reusable public fill generated by the construction industry may need to be disposed of to landfills.  The landfill spaces are expensive and designed for disposal of municipal waste and have been used up far more rapidly than originally planned for.  Disposal of reusable public fill at the landfills should therefore be avoided as far as practicable.

1.2.12           The proposed fill bank at Tuen Mun Area 38 is planned to serve construction sites located mainly in the western part of the territory.  In the absence of the proposed fill bank at Tuen Mun Area 38, truck flow at Lung Mun Road may still increase since it is also the major route to WENT landfill if delivery of C&D material to landfills becomes inevitable.

 

Public Consultation

1.2.13           A meeting was held between the Project Proponent and Tuen Mun District Council (TMDC) on 5 November 2002.  The TMDC members do not have in-principle objection to the setting up and operation of the proposed fill bank and associated sorting facilities at Tuen Mun Area 38.  Their views, which could be summarised as follows, have been taken into full account in the preparation of this project profile:

·               The project should be of a temporary nature;

·               The project should not operate beyond the time limit of which the temporary Government land allocation (TGLA) permits;

·               The Government should adhere to the time schedule of end 2004/ early 2005 when the fill bank will stop receiving construction & demolition materials; and

·               The Government should make all possible efforts to bring about early removal of the stockpiled construction & demolition materials from Tuen Mun Area 38.

1.2.14           The members also raised concerns on the environmental issues including air pollution and noise aspects which are addressed in this paper, and effective environmental mitigation measures have been identified accordingly for implementation.

 

1.3                   Name of the Project Proponent

1.3.1              Civil Engineering Department (CED)

Port Works Division

5/F., Civil Engineering Building

101, Princess Margaret Road

Homantin, Kowloon

Hong Kong

 

1.4                   Location and Scale of the Project

1.4.1              Figure 1 shows the location and layout of the proposed fill bank which will occupy a site area of approximately 35 hectares in Tuen Mun Area 38.  The site is a reclaimed land.  Reclamation activities are still ongoing in the south eastern part of the site under CED’s contract CV/2000/01 Tuen Mun Area 38 Reclamation, Stage II which is planned for completion in mid-2003.  The reclamation site has reserved as a public filling area since the Stage I reclamation in 1995.

1.4.2              The proposed fill bank will accommodate approximately 4.9 million cubic metres (Mm3) of public fill.  Subject to the public fill intake rate, the fill bank is planned to commence operation from April 2003 up to February 2005 for subsequent decommissioning.  To accommodate 4.9 Mm3 of public fill, preliminary engineering design consideration revealed that public fill received at the fill bank will need to be filled up to a maximum height of approximately 30m above ground (i.e. approximately +35mPD).  The lateral pressure induced from the stockpiling process and slope stability and other engineering factors have been considered in the preliminary design and will be closely monitored by CED during the operation of the fill bank.  Public fill received at the fill bank will be stockpiled with compaction and application of appropriate load on the surfaces as appropriate.  Figure 2 presents a sectional view of the fill bank.

 

1.5                   Number and Types of Designated Projects to be covered by the Project Profile

1.5.1              There is only one designated project covered in this Project Profile.

1.5.2              The proposed fill bank at Tuen Mun Area 38 is a designated project by virtue of C.11 in Section C Reclamation, Hydraulic and Marine Facilities, Dredging and Dumping in Schedule 2, Part I of the EIA Ordinance which specifies that a public dumping area of not less than 2 hectare in size is a designated project. 

 

1.6                   Name and Telephone Number of Contact Persons

Name

Designation

Telephone No.

Fax No.

CHENG Nim-tai, Raymond

SE/P1, Port Works Division, CED

2762 5521

2714 0113

CHAN Lit-wai

E/P2, Port Works Division, CED

2762 5547

2714 0113

 

 

 

 

 


2.                      OUTLINE OF PLANNING AND IMPLEMENTATION PROGRAMME

2.1                   How will the Project be Planned and Implemented

2.1.1              The proposed fill bank is under planning and design by in-house staff of CED.  A contractor will be commissioned to establish, operate and decommission the fill bank under the supervision of CED.  The key activities associated with the establishment, operation and decommissioning phases of the development are described below.

 

Establishment Phase

2.1.2              The site has been in operation as a public filling area as part of the reclamation under the supervision of CED.  Given the similar nature of the activities and the required facilities and environmental protection measures, it is not anticipated that the establishment phase of the fill bank will require any major civil engineering works of long duration.  The key activities during the establishment phase will involve site clearance, setting up of machinery and temporary structures at the barge handling area for loading/unloading of public fill to/from barges, construction of drainage facilities including trapezoidal surface drainage channels, modification of existing wheel washing facilities, installation of weighbridges and construction of site offices.

 

Operational Phase

2.1.3              The daily operation of the fill bank will involve the handling of public fill delivered to the site by trucks and barges.  It is planned to open the fill bank from 8:00 a.m. to 8:00 p.m. daily except during the Chinese New Year holidays to provide a stable outlet for public fill to serve the construction industry.  The planned operating hours of the fill bank are the same as WENT landfill to encourage the use of the fill bank and thus minimise the disposal of reusable fill material to the landfill to which the main access also go via Lung Mun Road. 

2.1.4              In the past 12 months from October 2001 to September 2002, the daily average truck volume using the public filling area at Tuen Mun Area 38 was about 600-700 vehicles per day.  With the opening of the fill bank at TKO Area 137 and the barging point at Kai Tak, and through operation of the trip-ticket system to assign the tipping location for trucks in Government and Public Corporations’ contracts, it was estimated that about 600 vehicles per day will be using the proposed fill bank at Tuen Mun Area 38.  Taking into account exceptional circumstances arising from, for example, expedition of certain site formation works after visiting of typhoons, it was estimated that the land-based truck volume using Lung Mun Road to the fill bank at Tuen Mun Area 38 would unlikely be more than 1,200 vehicles per day i.e., the truck traffic generated from the operation of the proposed fill bank will be more or less the same as currently encountered in the operation of the public filling area in Tuen Mun Area 38.

2.1.5              Similar to the existing public filling area in Tuen Mun Area 38, the proposed fill bank in Tuen Mun Area 38 will continue to receive fill material delivered by barges from the two public filling barging points on the Hong Kong Island.  Based on the existing data, it was estimated that an average of about 700 truckloads per day would be delivered by the marine route to the fill bank.  It is equivalent to about 7 - 8 barges per day.  With account of the possible variation on some days, the maximum quantity delivered by a marine route to the fill bank was estimated to be 1,050 truckloads per day, which is equivalent to about 12 barges per day.

 


Decommissioning Phase

2.1.6              Decommissioning of the fill bank will involve the removal of stockpiled public fill.  Public fill will be transported offsite mainly by barges (more than 90% of the stockpiled material) to allow direct transportation and placement of the fill material in reclamation activities.  A temporary Public Fill Sorting Facility with barging facilities for Penny’s Bay Reclamation Stage 2 (hereafter referred to as PBR2 Sorting Facility) planned on a 3.2 hectare site located to the immediate south-east of the fill bank site will receive public fill from the fill bank once it commences operation in July 2003. Another barging point will also be set up to send unsorted public fill to other reclamation projects.  Some of the material will be transported offsite by trucks for reuse in nearby work sites and it is expected that a small portion will also be diverted to the existing C&DMRF located in Tuen Mun Area 38 for aggregates production.

 

Key Activities Summary

2.1.7              The key activities during the establishment, operation and decommissioning phases of the fill bank described above are summarised in Table 2-1. 

Table 2-1       Key Activities during the Establishment, Operation and Decommissioning of the Proposed Fill Bank at Tuen Mun Area 38

Development Phase

Activities

Establishment

§       Site clearance

§       Construction of temporary storm water system

§       Setting up of C&D material loading/ unloading facilities

§       Setting up/ refurnishing site facilities such as fence wall, access road, site entrance, entrance office, site office, weighbridges and wheel washing facilities

§       Implementation of environmental mitigation measures

 

Operation

§       Stockpiling of a maximum of 4.9 million cubic metres (Mm³) public fill delivered by trucks or by barges

§       Implementation of environmental mitigation measures

 

Decommissioning

§       Removal of stockpiled public fill mainly by barges for use in reclamation projects with some of the material transported offsite by land for use in nearby work sites

§       Recycling of a small portion of the stockpiled public fill at the C&D Material Recycling Facility (C&DMRF) located in Tuen Mun Area 38

§       Implementation of environmental mitigation measures

 

 

2.2                   What is the Project Time-table

2.2.1              Figure 3 presents a preliminary programme for the establishment, operation and decommissioning of the fill bank.  Establishment works are planned to commence in March 2003 to prepare for intake of public fill commencing from April 2003 and full decommissioning in February 2008.


2.2.2              Subject to the public fill intake rate, it is anticipated that the fill bank capacity would be exhausted by February 2005.  The fill bank will not receive further quantity of public fill for temporary storage starting from March 2005.

2.2.3              Decommissioning of the fill bank (i.e., removal of stockpiled public fill) would commence as early as July 2003 with the commissioning of the PBR2 Sorting Facility.  The PBR2 Sorting Facility will receive fill material delivered directly to the site by trucks and barges, and if necessary, additional supply from removal of stockpiled fill material.  The fill material received will be sorted at the PBR2 Sorting Facility to produce fill material of specified quality and size for use in the reclamation works in Penny’s Bay. During the operation-decommissioning overlapping period (i.e. from approximately July 2003 to February 2005), public fill removed from the fill bank will only be transported offsite by barges through delivery of the fill material to the barging points at the PBR2 Sorting Facility.  In the subsequent years of public fill removal, barges will continue to be the major means for transportation of stored public fill from barging points at the PBR2 Sorting Facility and the fill bank to reclamation sites in order to avoid double handling of fill material.  It is expected that more than 90% of stockpiled material will be transported offsite by barges.

 

2.3                   Are There Any Interactions with Broader Programme Requirements or Other Projects Which shall be Considered

2.3.1              There are a number of related or concurrent short term and longer term projects in Tuen Mun Area 38.  These projects include the existing C&DMRF situated to the north-west of the site, the temporary PBR2 Sorting Facility, and a temporary C&D material sorting facility (hereafter referred to as C&DMSF) which are as shown in Figure 1, and other longer term planned developments including a recovery park, waste management facilities, longer-term C&D material recycling facility, Permanent Aviation Fuel Facility and Petrochemical Plant which are illustrated in Figure 4.  The exact location and site requirements of the planned/ potential land uses as shown in Figure 4 are subject to further studies and advice from the relevant Government Bureaux and Departments. These related or concurrent projects in the vicinity of the proposed fill bank are further described below.

 

Projects related to the Operation Programme of the Fill Bank

Tuen Mun Area 38 Reclamation Stage 2

2.3.2              Tuen Mun Area 38 Reclamation Stage 2 is ongoing in the south-eastern portion of the site.  The reclamation works are planned for completion in mid 2003.  Before the completion of the reclamation activities, operation of the fill bank from April 2003 onwards will begin with the reclaimed land to the north of the reclamation work area.

 

Construction and Demolition Material Recycling Facility (C&DMRF)

2.3.3              Abutting the north-western boundary of the fill bank is the existing temporary Construction and Demolition Material Recycling Facility (C&DMRF).  The C&DMRF occupies a site area of about 3.7 hectares.  The C&DMRF receives oversized concrete and rock pieces and produces aggregates for concrete production or as sub-base material.  The facility has a design maximum processing capacity of 2,400 tonnes per day.  The C&DMRF will receive C&D Material delivered by trucks and will share the same main entrance and main site access road lying along the northern boundary of the site.  During the early stage of the decommissioning phase of the fill bank, the C&DMRF will still be operational and may make use a small portion of the stored public fill for processing to reusable aggregates.  The temporary C&DMRF was planned to be in operation until October 2004.

 


Penny’s Bay Reclamation Stage 2 Public Fill Sorting Facility (PBR2 Sorting Facility)

2.3.4              An area of approximately 3.2 hectares located to south-east of the fill bank is allocated for the provision of the temporary PBR2 Sorting Facility.  The PBR2 Sorting Facility has a design maximum output capacity of 9,000 tonnes per day. The temporary PBR2 Sorting Facility was planned to be in operation from July 2003 to June 2008.

2.3.5              The PBR2 Sorting Facility will receive public fill via the fill bank site.  Suitable public fill delivered by incoming trucks/ barges to the fill bank will be diverted to the PBR2 Sorting Facility directly.  When additional supply of public fill is required for PBR2, stockpiled material at the fill bank will also be excavated for feeding the PBR2 Sorting Facility.  Direct vehicular access from Lung Mun Road to the PBR2 Sorting Facility (along the eastern boundary of the site) is not planned to minimise the potential cumulative dust impact due to truck movement on the air sensitive land uses within the nearby River Trade Terminal.

 

Construction and Demolition Material Sorting Facility (C&DMSF)

2.3.6              An area of approximately 1.5 hectares abutting the eastern boundary of the PBR2 Sorting Facility is allocated for the establishment for the temporary C&DMSF. This facility will receive mixed C&D material for sorting to separate reusable public fill and C&D waste.  The sorted public fill will be transported to the fill bank for storage, while the separated C&D waste will be transported to landfill for proper disposal.  The C&DMSF is planned to commence operation in mid 2003, and will have a design processing capacity of about 600 tonnes per day. 

2.3.7              The temporary C&DMSF will receive C&D material delivered by trucks.  A separate entrance will be provided for the C&DMSF to ensure that the C&D material delivery trucks are diverted away from the public fill delivery trucks.  A haul road will be provided along the eastern boundary of the fill bank to allow the transportation of C&D material to the C&DMSF.  The haul road provided along the eastern boundary of the fill bank will be solely used for access to the C&DMSF only to minimise dust generation from truck movement near the River Trade Terminal.  The temporary C&DMSF was planned to be in operation from July 2003 to June 2008.     

 

Projects related to the Decommissioning Programme of the Fill Bank

Recovery Park and Other Waste Management Facilities

2.3.8              A Recovery Park would be established in Tuen Mun Area 38 as the land use of the site in the longer term.  A Project Profile was prepared for the proposed Recovery Park which has been made reference to in the preparation of this document.  According to DEP, the park will consist of two phases each occupying an area of approximately 10 hectares.  Phase II of the park planned in 2006 shares the same site area (about 10 hectares) that will be temporarily occupied by the fill bank. The decommissioning of the fill bank will take into account the programme of the Recovery Park Phase II development to ensure that the required site land is cleared for the future development.

2.3.9              In addition to the Recovery Park Phase II, the decommissioning programme of the temporary fill bank will also allow 6 hectares of land in the south-eastern side of the fill bank site to be cleared and made available in mid-2006 for the establishment of planned waste management facilities (a centralised incineration facility and a chemical waste bulking facility).

2.3.10           A site area of about 10 hectare occupied by the south-eastern side of the temporary fill bank, the temporary PBR2 Sorting Facility and C&DMSF would be developed into a longer-term C&D material recycling facility.

 


Other Concurrent Projects

2.3.11           Recovery Park Phase I occupying an area of about 10 hectares to the west of the fill bank is planned for construction to commence in mid-2004.  Further west, the Airport Authority has planned to construct a Permanent Aviation Fuel Facility (PAFF), which will occupy a site area of 6 hectares in Tuen Mun Area 38 Reclamation, Stage 1.  According to the preliminary development programme as presented in the approved EIA report, the PAFF would take 4 years for planning, design and construction, and would commence its operation at the end of 2005.  Adjacent to the PAFF site, an area of 1.4 hectares is retained for planning of a petrochemical plant.

 

3.                      Major Elements of the Surrounding Environment

3.1                   Existing and Planning Sensitive Receivers and Sensitive Parts of the Natural Environment which might be affected by the Proposed Project

3.1.1              The proposed fill bank is situated on the outskirts of Tuen Mun in an undeveloped newly reclaimed land with some nearby industrial premises.  The nearest residential developments are village houses at Lung Kwu Tan at more than 2 km to the west of the site, and Melody Garden is also situated at more than 2 km to the east of the site.

3.1.2              The site is bounded by Lung Mun Road to the north.  To the south-east of the site is the existing River Trade Terminal.  To the west of the site is the reclaimed land formed under the Tuen Mun Area 38 Reclamation, Stage I.  Further north-west at more than 400 m from the fill bank site boundary is Shiu Wing Steel Mill.  On the opposite side of Lung Mun Road there is an existing container storage area on the hillside north of Siu Lang Shui Road. To the south of the fill bank site is coastal water of North Western Water Control Zone. 

3.1.3              According to the latest Tuen Mun Outline Zoning Plan (S/TM/16), the site and its surrounding areas lying to the south of Lung Mun Road are zoned as “Other Specified Uses” (OU) annotated “Special Industrial Area”.  Figure 5 shows an Extract of the latest Outline Zoning Plan.

3.1.4              Longer term uses on Tuen Mun Area 38 that are currently under planning include a recovery park, permanent aviation fuel facility, waste management facilities (centralised incineration facility and chemical waste bulking facility), and longer-term C&D material recycling facility.  As described in the preceding section, the development programme of the recovery park and waste management facilities have been taken into account in the planning of the decommissioning programme of the temporary fill bank.    

 

3.2                   Major Elements of the Surrounding Environment and Existing and/or Relevant Past Land use(s) on site which might affect the Area in which the Project is Proposed

3.2.1              The restored Siu Lang Shui landfill is located to the north of the site on the other side of Lung Mun Road.  An area of approximately 3 hectares at the northern concern of the site is situated within the 250 m consultation zone of the restored Siu Lang Shui landfill (see Figure 6).


4.                      Possible Impact on the Environment

4.1                   Outline any Processes involved, Including Process Flow Diagrams, Site Plans, Storage Requirements, and Information on Emissions and Discharges

4.1.1              The programme and key activities during the establishment, operation and decommissioning phases of the fill bank are as described in Section 2.1.  Figure 1 and Figure 2 show the layout and sectional view of the fill bank.  The activities associated with the establishment, operation and decommissioning of the fill bank are further evaluated below with respect to each of the relevant environmental aspects.

4.2                   Air Quality Impact

4.2.1              The proposed fill bank is situated in an undeveloped newly reclaimed land at Tuen Mun Area 38 with some nearby industrial premises.  To the north of Lung Mun Road are undeveloped areas. 

4.2.2              Establishment of the fill bank will not require substantial construction activities.  Site clearance, installation of temporary drainage systems, setting up of temporary facilities at the barge handling area will unlikely involve any major earthmoving and excavation activities.  It is not expected that the construction activities at the fill bank will generate any significant air quality impact.  Any potential dust emission impact will be readily mitigated by watering and other standard dust control measures.

4.2.3              During the operation/ decommissioning phases, handling, loading, unloading, breaking down of oversized public fill and stockpiling activities at the fill bank may result in much higher levels of dust emissions than the construction phase.  The activities onsite in the handling of public fill could pose some air quality impact on the existing and planned factories situated in the vicinity of the fill bank, if unmitigated.  The existing Air Sensitive Receivers (ASRs) of interest include the River Trade Terminal abutting the eastern boundary of the fill bank, and Shiu Wing Steel Mill situated at about 420m to the west of the fill bank site boundary.   The planned ASR includes air sensitive land uses within the Recovery Park Phase I, Recovery Park Phase II and Permanent Aviation Fuel Facility (PAFF) after their operation.

4.2.4              The potential dust impact during the operation and decommissioning phases of the fill bank has been assessed quantitatively.  The models revealed that the major source of potential dust impact is associated with dust generation from truck movement. The approach, methodology, and findings of the assessment are presented in Annex I for reference. 

4.2.5              Dust control measures have been recommended based on the requirements in the Regulation (see Attachment I for details).  These measures are standard measures that are proven to be effective in controlling fugitive dust emissions. The dust control measures include the designation of an area of 100m x 100m as shown in Figure 7 in the north-eastern corner of the stockpiling area as a “truckload control zone”.  Number of trucks travelling to the control zone shall be limited to a maximum of 64 vehicles per hour and a daily maximum of 633 vehicles per day. The assessment findings and the predicted Total Suspended Particulate (TSP) concentrations at the representative assessment points demonstrated that with the implementation of the proposed dust control measures (see Attachment I for details), the establishment, operation and decommissioning of the fill bank will unlikely pose any unacceptable air quality impact on the nearby ASRs.  The air quality modelling results demonstrated that with the implementation of standard dust control measures, it is practicable to control the TSP levels at the nearby ASRs to within acceptable levels meeting the air quality criteria specified in the EIAO-TM.

4.2.6              Tuen Mun Area 38 has been operated as a public filling area.  TSP monitoring is carried out routinely on every 6-calendar days as part of an Environmental Monitoring and Audit Programme. The air monitoring station (DM1) is located near the site entrance where dust is generated from truck movement as shown in Figure 8.   The average 1-hr and 24-hr TSP concentrations monitored from September 01 to August 02 was 215 mg/m3 and 122 mg/m3, which are well below the 1-hr and 24-hr TSP limit levels.  Even the 95th percentiles of the 1-hr and 24-hr TSP monitoring results were well within the TSP limit levels.  The air quality modelling revealed that truck movement contributed significantly to the overall dust emissions. Therefore, these existing monitoring results obtained in the operation of the site as a public filling area further support that the potential dust impact would be controlled to acceptable levels through application of standard dust control measures.

4.2.7              It is recommended to check for the implementation, effectiveness and adequacy of the dust control measures applied by the contractor in the establishment, operation and decommissioning of the fill bank through an Environmental Monitoring and Audit (EM&A) programme.

 

4.3                   Noise Impact

4.3.1              The establishment, operation and decommissioning activities at the fill bank will involve the use of Powered Mechanical Equipment during the daytime and evening periods. All construction works at the fill bank will be carried out during the non-restricted hours (i.e. 7:00 a.m. to 7:00 p.m. on weekdays other than general holidays).  During the operation/ decommissioning phase, the fill bank will not be in operation during night time from 8:00p.m. to 8:00a.m. the next day.

4.3.2              In the establishment, operation and/or decommissioning of the fill bank, there would be some other concurrent activities offsite that may generate some noise from construction works or industrial operation. Nevertheless, the nearest Noise Sensitive Receivers (NSRs) are village houses in Lung Kwu Tan located at more than 2 km from the site.  Melody Garden and Bufferfly Estate are also located at more than 2 km from the site.  Given the vast distance separation between the NSRs and the site, it is not anticipated that the fill bank will pose any noise impact on the surrounding NSRs.    Notwithstanding this, noise management measures are recommended to be implemented by the contractor as good site practices in the establishment, operation and decommissioning of the fill bank.

4.3.3              The operation of the fill bank will generate some traffic on the nearby road networks.  In the past 12 months, the daily average truck volume using the public filling area at Tuen Mun Area 38 was about 600-700 vehicles per day.  With the opening of the fill bank at TKO Area 137 and the barging point at Kai Tak and through operation of the trip-ticket system to assign the tipping location for trucks in Government and Public Corporations’ contracts, it was estimated that about 600 vehicles per day will be using the proposed fill bank at Tuen Mun Area 38.  Taking into account exceptional circumstances arising from, for example, expedition of certain site formation works after visiting of typhoons, it was estimated that the land-based truck volume using Lung Mun Road to the fill bank at Tuen Mun Area 38 will unlikely be more than 1,200 vehicles per day. The truckload records indicated that the peak truckload arrival time occurred at about 11:00 to 12:00, which accounted for approximately 13% of the total daily truckload.  Therefore, together with the C&DMRF and PBR2 Sorting Facility, the fill bank will serve approximately 156 public fill delivery trucks (i.e., 1200 veh/day x 13%) going to Tuen Mun Area 38 during the peak hour.  The hourly average public fill delivery truck volume was calculated to be 109 vehicles per day (i.e., 1200 veh/day ¸ 11 hrs).

4.3.4              In addition to the land-based access, a marine access will be provided at the fill bank for delivery of public fill by barges to the site from the existing public filling barging points at Sai Ying Pun and Quarry Bay on the Hong Kong Island. This will provide a convenient means for access to the public filling facilities for construction sites located on the Hong Kong island and thus minimise the public fill delivery trucks travelling distance and cross-district traffic.

4.3.5              Since the commissioning of Lung Fu Road in March 2002, the traffic noise impact arising from the existing Lung Mun Road on the nearby residential developments have been reduced by diversion of vehicles to use Lung Fu Road.  Lung Fu Road provides a direct route to the south western part of Tun Mun.  Lung Fu Road is provided with traffic noise mitigation measures, including proper alignment to maximise setback distance from NSRs (e.g. setback from Melody Garden is more than 300m), provision of low noise road surfacing and noise barriers in the proximity of the NSRs.  Wong Chu Road connected with Lung Fu Road is also provided with noise enclosures and noise barriers to control the traffic noise impact generated from the vehicles using these roads.  Figure 9 illustrates the traffic noise mitigation measures incorporated into the design of Lung Fu Road and Wong Chu Road.

4.3.6              The existing operation of Tuen Mun Area 38 as a public filling facility demonstrated that traffic impact is unlikely a concern.

4.3.7              With the provision of the new Lung Fu Road and the associated traffic noise mitigation measures, it is considered that the future operation of Tuen Area 38 as a fill bank will unlikely generate any traffic related environmental impacts attributable to the operation of the fill bank.

 

4.4                   Water Quality Impact

4.4.1              The site is situated within the North Western Water Control Zone (WCZ).  Given the nature of the project, water quality criteria and baseline water quality related to suspended particulate are of relevance. 

4.4.2              The water quality in the North Western WCZ is influenced by the massive Pearl River flows and discharges from sewage outfalls.  There are three major sewage outfalls in this WCZ, including Northwest New Territories, Pillar Point and Siu Ho Wan sewage outfalls.  The Water Quality Objectives (WQOs) applicable to the North Western WCZ are given in Annex II.  The WQOs specified that for suspended solids, human activity should neither cause the natural ambient level to be raised by more than 30% nor give rise to accumulation of suspended solids which may adversely affect aquatic communities.

4.4.3              EPD carries out routine water quality monitoring at 6 stations within the North Western WCZ.  Among these stations, NM3 at Pillar Point is located nearest to the site.  Table 4-1 presents a summary of the water quality monitoring data obtained in 1998 through 2000 at NM3.

Table 4-1       Water Quality Monitoring Data obtained at NM3

Water Quality Parameter

1998

1999

2000

Temperature (°C)

23.9

(18.4 – 27.0)

23.7

(17.4 – 27.3)

23.4

(17.4 – 28.0)

Suspended Solids (mg/L)

12.2

(3.5 – 32.3)

7.5

(2.8 – 14.6)

10.3

(1.9 – 20.3)

Turbidity (NTU)

9.0

(5.3 – 19.5)

9.9

(3.5 – 14.8)

11.9

(1.8 – 29.8)

Salinity (psu)

27.6

(19.3 – 31.6)

29.2

(22.5 – 33.2)

29.5

(26.7 – 32.7)

Dissolved Oxygen (mg/L)

5.6

(3.8 – 8.4)

5.9

(3.3 – 8.0)

5.9

(3.5 – 8.1)

PH

7.6

(6.5 – 8.2)

8.0

(7.8 – 8.3)

7.9

(7.7 – 8.3)

5-day BOD (mg/L)

0.8

(0.3 – 1.5)

0.6

(0.2 – 0.9)

0.6

(0.1 – 1.7)

Total Inorganic Nitrogen (mg/L)

0.61

(0.30 – 0.86)

0.35

(0.14 – 0.75)

0.35

(0.16 – 0.59)

Unionised Ammonia (mg/L)

0.005

(0.002 – 0.011)

0.003

(<0.001 – 0.007)

0.004

(0.002 – 0.010)

E. coli (cfu/100mL)

2300

(260 – 85000)

680

(88 – 6300)

320

(75 – 1300)

 


4.4.4              The nearest Water Sensitive Receivers (WSRs) in the vicinity of the project site are two seawater intake points at Castle Peak Power Station which are located at about 1.4km and 1.5km from the southern boundary of the subject site.  Other WSRs such as gazetted beaches are located at further distance away from the site.    North western WCZ also represents an area where the eastern rang of the Pearl River dolphin population would inhabit, including Indo-Pacific humpback dolphins (Sousa chinesis) which are frequently observed within the WCZ.

4.4.5              Activities during the establishment, operation and decommissioning phases of the fill bank will be land-based.  Before there will be public fill intake at the site, the activities such as establishment of site offices, installation of drainage channels, wheel washing facilities at site exists, erection of site hoarding, setting up of the temporary facilities at barge handling area will only involve minor earthmoving or excavation activities.  The setting up of the temporary facilities at barge handling area will not require dredging as this will be erected on the existing seawall.  The small quantity of excavated material not required for backfilling will be stockpiled at the fill bank at sufficient buffer distance from the seashore.  It is considered that the activities during the establishment phase will unlikely generate surface runoff containing any significant quantity of suspended solid.

4.4.6              Operation of the fill bank will involve handling, transfer and stockpiling of fill material at the fill bank.  Potential water quality impact could arise from erosion of stockpiled material leading to discharge of polluted stormwater, and accidental dropping of material during the transfer of fill material to the site from barges.

4.4.7              Discharge of surface runoff containing large quantity of suspended solid is a possible concern especially during the rainy season if appropriate environmental control measures are not provided and maintained onsite.  Fill material delivered by trucks will be dumped to the stockpiling area direct situated away from the seafront.  Based on the dumping licence conditions, the fill bank will only accept earth, building debris as well as broken rock and concrete.  Mixed materials such as those containing marine mud, pond mud, household refuse, plastic, metal, industrial and chemical waste, animal and vegetable matter and other material considered not suitable by the Filling Supervisor would not be accepted at the fill bank.  Over-sized material will be broken down into smaller pieces by use of excavators onsite, and small quantity of C&D waste, if identified, will also be removed from the public fill before they are stockpiled. 

4.4.8              Public fill delivered to the site by barges will be uploaded to trucks from the berthing barge during the operational phase.  Appropriate design and provision of the public fill handling equipment and other measures will be required to minimise the chance of accidental dropping of public fill to the coastal water which may otherwise lead to potential water quality impact, though this would be of localised nature.

4.4.9              During the decommissioning of the fill bank, tipping activities at the barging point have the potential of accidental losses of public fill during placement of public fill into the barges.  Appropriate design and control of the tipping operation are required to minimise the risk of water pollution from accidental losses of public fill.

4.4.10           The implementation of the fill bank will not involve any marine based activities.  It is considered that with application of the best management practices (BMPs) to control the land-based pollution sources including polluted stormwater runoff and use of specified design and transfer methods such that the path of material delivery will not be directly on top of the water surface, the activities during the establishment, operation and decommissioning of the fill bank would not result in any significant water quality impact.  The implementation of sufficient water pollution control measures shall be checked with an EM&A programme.

4.4.11           The ongoing reclamation activities under CED’s contract “CV/2000/01 – Tuen Mun Area 38 Reclamation, Stage II” are planned for completion in mid 2003.  The contractor carrying out the reclamation is required to provide water pollution control measures, which are checked by an ongoing EM&A programme.  In the presence of the water pollution control measures for the land-based activities at the fill bank and the marine-based activities in the reclamation, and in view of the limited duration when the two operations would take place concurrently, it is not anticipated that there would be any significant cumulative water quality impact on the water sensitive receivers.  Details of the planned environmental protection measures are presented in Attachment I.

 

4.5                   Landfill Gas Hazard

4.5.1              An area of about 3 hectares in the northern corner of the fill bank site is situated within the 250m consultation zone of the restored Siu Lang Shui landfill (see Figure 6).  The shortest distance between the waste boundary of the landfill and the project site boundary is about 160m.

4.5.2              The restored Siu Lang Shui landfill occupies an area of about 8.3 hectares. It received a total of 2.1 million tonnes of waste.  The landfill site ceased to accept further waste since 1983. Restoration works were completed in 2000 and landfill gas and leachate control measures were installed.  Contractor has been recruited to provide maintenance of the landfill gas/ leachate control measures.  Landfill gas migration monitoring results obtained monthly at six monitoring wells installed along Siu Lang Shui Road at the southern boundary of the landfill revealed that except for one measurement result at one monitoring well, the methane concentrations were at or below 1% v/v at all monitoring stations for 14 months from May 01 to June 02.   Annex III presents the methane monitoring locations and monitoring results.

4.5.3              The portion of site situated within the consultation zone of the restored landfill will be occupied by existing main access road, wheel washing bay, weighbridges, pubic fill stockpiling area and surface drainage channel.  The sensitivity of these uses to landfill gas migration is considered to be low. At the site entrance/ exit, container offices would be provided.  Appropriate design of the container offices such as by supporting the containers above a hollow platform would avoid accumulation of landfill gas.

4.5.4              The nature of the project will not require any significant excavation activities.  The reclaimed site is topographically flat and the chance of encountering leachate seepage within the site is considered minimal.

 

4.6                   Landscape and Visual Impact

4.6.1              The project site occupies a reclaimed land without existing trees onsite.  The existing site area located to the south of Lung Mun Road is dominated by industrial elements with low landscape quality and sensitivity to change.  Potential impact on the existing landscape value of the site is not identified to be a concern.

4.6.2              The nearest high-rise residential buildings at Melody Garden and Butterfly Estate are situated at more than 2km to the east of the site and view angle to the site is limited by foothills present between the site and these developments.  Given the vast distance separation, limited view angle and the limited height of the fill bank, it is not anticipated that the establishment, operation and decommissioning of the fill bank will give rise to any significant visual impact on these Visual Sensitive Receivers (VSRs).

4.6.3              Workers in the nearby factories, G/IC and road users at Lung Mun Road could be affected visually from the increased amount of fill being stored on the site due to the effects on the lower level views from these sites surrounding the fill bank.  However, the project is of a temporary nature, and the height of the stockpile would only build up gradually (from April 2003 to February 2005) and up to a maximum height of 30m above ground.  The build up of the stockpiling height will also be controlled by the early commencement of the decommissioning of the fill bank in July 2003 upon operation of the PBR2 Sorting Facility. The fill bank would not receive further fill material from March 2005 onwards and the fill bank height would be reduced during the decommissioning phase of the project.  The buffer provided between the nearby VSRs and the fill bank will also be optimised by the platform-by-platform approach in the build up of the fill bank, with the higher platforms located at further distance away from the VSRs.  The magnitude of change arising from the project is considered to be small. 


4.6.4              Views from the industrial buildings located to the east of the site will be partially blocked by containers and huge machineries. The fill bank is set back from the existing industrial buildings located to the west of the site.  A buffer area will be provided between the fill bank stockpiling area and Lung Mun Road where low-rise site facilities, site office and the main access road will be located.  Drivers and passengers of vehicles using Lung Mun Road are in transit and the number of persons is relatively small.  Pedestrians using Lung Mun Road are identified to be very limited.  Views of the drivers, passengers and pedestrians to the site are also partially blocked by the existing roadside planting and the site hoarding provided along the northern perimeter of the site.  The sensitivity to change of these VSRs is considered to be low and the degree of unmitigated visual impact on these VSRs is considered slight.

4.6.5              Notwithstanding these, it is planned to apply additional landscape/ visual control measures in form of applying hydroseeding or coloured geo-textile matting (dark green/brown) to the final slope surfaces as they are formed on the eastern, northern and western sides of the fill bank.  Along the northern perimeter of the site where space permits, a buffer tree planting strip is also planned to further soften the landscape.

4.6.6              The design, colour and finish of structures at the fill bank should be such that they are visually recessive.  Reflectivity should be reduced through selection of material or surface treatment. The surface colour selected should be of an earthy tone with strong natural qualities (e.g. green/ grey/ brown).  Use of bold colour schemes should be avoided.  CED has planned to apply similar chromatic treatment for the offsite temporary PBR2 Sorting Facility and the C&DMSF.

4.6.7              The fill bank will be in operation from 8:00 a.m. to 8:00 p.m.  Several spotlights would be used for illumination for works at the fill bank and the nearby PBR2 Sorting Facility, C&DMSF and C&DMRF during the evening time works.  In view of the operating hours of the fill bank and the nearby facilities, long distance separation between the fill bank and the high-rise residential buildings, and the limited view angle from the VSRs, the visual impact from night-time glare during the establishment, operation and decommissioning of the fill bank would be negligible.

 

4.7                   Waste Management

4.7.1              Establishment of the fill bank will not require any substantial work activities.  Limited quantity of non-inert waste generated will be disposed of properly by delivery to landfill.  Excavated material not required for backfilling generated from the construction of the surface drainage channels will be stored within the public fill storage area such that offsite disposal will not be required. 

4.7.2              The fill bank is designed for temporary storage of inert public fill and will not accept municipal and chemical waste material.  This is implemented through the dumping licence conditions which require that materials delivered to public filling facilities are free from household refuse, plastic, animal and vegetable matter, etc.  In the handling of the public fill delivered to the site such as laying and compaction of fill material, the filling supervisor will require the C&D waste to be separated and collected as far as possible for disposal to landfill.

 

4.8                   Ecological Impact

4.8.1              The proposed fill bank will occupy a newly reclaimed site.  The site is bound by Lung Mun Road.  To the east and west of the site are existing and planned industrial landuses.  Given the disturbed nature of the site and its immediate surrounding environment, existing ecological resources are lacking.  It is therefore considered that the implementation of the fill bank will unlikely pose any ecological impact of concern.

 


5.                      Environmental Protection Measures to be Incorporated

5.1                   Describe Measures to Minimise Environmental Impacts

5.1.1              As noted from the evaluation in the previous section, environmental protection measures with respect to fugitive dust emission, water quality, landfill gas, landscape and visual aspects are planned to be incorporated into the design of the project.  These planned environmental protection measures are described in detail in Attachment I and the environmental implications after the implementation of these measures are evaluated below.

Fugitive Dust Control Measures

5.1.2              Any works that involve the stockpiling of dusty materials are regulated under the Air Pollution Control (Construction Dust) Regulation as regulatory work.  The dust control measures required under the Air Pollution Control (Construction Dust) Regulation should be implemented during the establishment, operation and decommissioning phases of the fill bank. 

5.1.3              The fill bank is planned on a site that is situated away from most air sensitive receivers including all residential developments and active recreational uses.  Dust control measures have been recommended based on the requirements in the Regulation.  These measures are standard measures that are proven to be effective in controlling fugitive dust emissions. The dust control measures include the designation of an area of 100m x 100m in the north-eastern corner of the stockpiling area as a “truckload control zone”.  Quantitative assessment with the use of numerical air quality modelling has demonstrated that with the application of these dust control measures, the potential fugitive dust emission impact can be controlled to acceptable levels.  Details of the dust control measures planned for mitigating the potential dust impact on the nearby existing and planned factories are presented in Attachment I.  The implementation of the dust control measures will be checked by an EM&A programme.

5.1.4              An Environmental Team (ET) shall be appointed to carry out the recommended EM&A.  An Independent Environmental Checker (IEC) shall also be appointed to carry out independent environmental audit of the project. The ET shall follow a sampling frequency of at least one in every six days in carrying out 24-hr TSP monitoring. For 1-hr TSP monitoring, a sampling frequency of at least three times per day in every six days should be undertaken during the hours when the highest dust impact is predicted to occur (i.e. when the truck flows are relatively high during a day).  As the fill bank peak operating hour is expected to occur at approximately 11:00a.m. to 12:00 hour, that hour should be covered in the 1-hour TSP monitoring.  

5.1.5              Figure 10 shows the indicative locations recommended for setting up the dust monitoring stations (A1 and A2).  A1 was selected to monitor the TSP levels at River Trade Terminal and A2 selected to measure the TSP levels at the nearest existing/ planned Air Sensitive Receivers to the western boundary of the site.  The location for A2 will be subject to the alignment of the western boundary of the fill bank and will be set back towards the east when the Recovery Park Phase II occupies part of the fill bank site.  The ET may like to propose alternative monitoring locations taking into consideration of the latest status, availability and/or accessibility of the various possible monitoring locations.  The alternative monitoring locations proposed by the ET shall be approved by the Engineer’s Representative and agreed by the Independent Environmental Checker (IEC).

5.1.6              Baseline monitoring shall be carried out by the ET in at least one of the recommended monitoring stations for at least 14 consecutive days to obtain daily 24-hr TSP samples.  1-hr sampling shall also be done at least 3 times per day during daytime when the highest dust impact would be anticipated during the operational phase of the fill bank (i.e. when the truck flows are high).  One of the three 1-hour TSP monitoring shall cover the fill bank operational peak predicted at 11:00a.m. to 12:00 hour. 


5.1.7              The baseline monitoring of 1-hr and 24-hr TSP concentrations shall form the basis for determining the action/ limit levels for the impact monitoring as illustrated in Table 5-1.  The ET shall compare the impact monitoring results with the action/ limit levels. The limit levels for 24-hr TSP and 1-hr TSP monitoring shall be 260 and 500mg/m3, respectively.  In case of non-compliance with the action or limit level, actions shall be triggered under the EM&A programme to ensure that measures are taken to ameliorate any identified dust impact to within acceptable levels.

Table 5-1       Establishment of Action and Limit Levels for TSP Monitoring

Parameters

             Action

Limit

24 Hour TSP Level in mg/m³

For baseline level £ 200 mg/m³, Action level = (Baseline level x 1.3 + Limit level) /2;

For baseline level > 200 mg/m³, Action level = Limit level;

260 mg/m³

1 Hour TSP Level in mg/m³

For baseline level £ 384 mg/m³, Action level = (Baseline level x 1.3 + Limit level) /2;

For baseline level > 384 mg/m³, Action level = Limit level;

500mg/m³

 

Noise Management

5.1.8              It was evaluated that noise generated from the use of Powered Mechanical Equipment during the establishment, operation and decommissioning of the fill bank will unlikely pose any significant noise impact on the surrounding NSRs due to the vast distance separation.  Notwithstanding this, as good site practices, noise management measures are recommended to be implemented by the contractor during the establishment, operation and decommissioning of the fill bank.  The recommended noise management control measures are presented in Attachment I.

 

Water Quality Control Measures

5.1.9              Potential water quality impact during the establishment, operation and decommissioning of the fill bank shall be controlled with the following as design principles:

·                Prevent or minimise the likelihood of the identified pollutants being in contact with rainfall or runoff; and

·                Measures to abate pollutants in the stormwater runoff.

5.1.10           These shall be achieved by implementation of practicable measures to control point and non-point sources of discharges as Best Management Practices (BMPs).  Given the similar nature of the activities during the establishment, operation and decommissioning phases of the fill bank, the guidelines for handling and disposal of construction site discharges as detailed in EPD ProPECC Note PN1/94 “Construction Site Drainage” shall be followed.  The water pollution control measures to be incorporated into the design of the fill bank are as described in Attachment I.

5.1.11           All activities associated with the establishment, operation and decommissioning of the fill bank are land-based.  With the implementation of the planned water pollution control measures, it is expected that the potential water quality impact can be controlled to within acceptable levels. The implementation of the water quality pollution control measures will be checked by an EM&A programme.

5.1.12           CED is currently implementing a comprehensive water quality monitoring programme as part of the Contract CV/2000/01 – Tuen Mun Area 38 Reclamation, Stage 2.  Water quality monitoring shall continue after the termination of the existing EM&A programme carried out for Tuen Mun Area 38 Reclamation, Stage 2.  The ET shall monitor the water quality parameters including turbidity (in NTU), dissolved oxygen (in mg/l) and suspended solids (in mg/l) such that any deterioration in water quality attributable to the operation at the fill bank can be identified and actions are taken timely to rectify the situation. 


5.1.13           Figure 11 shows the indicative locations of the control stations (FC1 and FC2) and impact monitoring stations (FM1 and FM2).   If the ET leader would like to propose alternative locations for the impact and control monitoring stations, he shall seek prior approval from the IEC and DEP. 

5.1.14           Instead of carrying out actual monitoring before the project begin, the baseline water quality conditions can be established by a review of the existing water quality monitoring data obtained under the ongoing EM&A programme carried out for Tuen Mun Area 38 reclamation, stage 2.

5.1.15           Impact monitoring shall be taken under two tidal conditions (mid-flood and mid-ebb) at 3 water depths, namely, 1m below water surface, mid-depth and 1m above seabed, except where the water depth is less than 6m when the mid-depth station may be omitted. Impact monitoring shall be undertaken by the ET at a frequency of three days per week.   The interval between two sets of monitoring shall not be less than 36 hours except where there are exceedances of Action and/or Limit levels, in which case the monitoring frequency shall be increased.

5.1.16           The action and limit levels under the EM&A shall be established for the project with account of the baseline water quality, impact and control stations monitoring results and specific limit levels as illustrated in Table 5-2.

Table 5-2       Establishment of Action and Limit Levels for Water Quality Monitoring

Parameters

Action

Limit

DO in mg/l

(Surface, Middle & Bottom)

Surface & Middle

5%-ile of baseline data for surface and middle layer

Bottom

5%-ile of baseline data for bottom layer

Surface & Middle

4 mg/l except 5 mg/l for Fish Culture Zone (FCZ) or

1%-ile of baseline data for surface and middle layer

Bottom

2 mg/l or

1%-ile of baseline data for bottom layer

SS in mg/l

(depth-averaged)

95%-ile of baseline data or 120% of upstream control station’s SS at the same tide of the same day

99%-ile of baseline, 130% of upstream control station's SS at the same tide of the same day and specific sensitive receiver water quality requirements

Turbidity (Tby) in NTU

(depth-averaged)

95%-ile of baseline data or 120% of upstream control station's Tby at the same tide of the same day

99%-ile of baseline or 130% of upstream control station's Tby at the same tide of the same day

 

5.1.17           Should non-compliance of the action or limit levels occurs, the ET should review and identify the potential source(s) of the impact, devise and implement appropriate mitigate measures in a collaborative manner.

 


Landfill Gas Control Measures

5.1.18           As a landfill gas control measure, the container offices provided at the site entrance/ exit will be supported above a hallow platform or equivalent measure will be provided to effect passive ventilation and avoid accumulation of landfill gas beneath the container office.  Other landfill gas control measures, as well as leachate management measures, are as described in Attachment I.

5.1.19           With the provision of these landfill gas control measures, the risk from landfill gas and leachate migration will be reduced to acceptable levels.

5.1.20           A landfill gas monitoring programme should be formulated by the Safety Officer/ Supervisor of the contractor.  The Safety Officer/ Supervisor shall carry out periodic monitoring when there are activities such as excavation and trenching at locations within the consultation zone of the restored Siu Lang Shui landfill.  The Safety Officer/ Supervisor should be present onsite throughout the periods when there are any excavation works undertaken within the consultation zone of the closed Siu Lang Siu Landfill.

5.1.21           The Safety Officer/ Supervisor should be provided with an intrinsically safe portable instrument(s), appropriately calibrated and capable of measuring methane, carbon dioxide and oxygen in the specified ranges.  The Safety Officer/ Supervisor shall initiate appropriate actions such as posting “no smoking” signs and prohibition of hot works in region with high levels of methane, carbon dioxide or oxygen monitored.

 

Landscape and Visual Impact

5.1.22           The evaluation presented in the preceding section identified that direct impact on the landscape resources of the site from the project is not a concern.  The nearest high-rise residential buildings are located at significant distances away from the site such that the potential visual impact on these VSRs are considered negligible. 

5.1.23           Given the temporary nature of the project, buffer incorporated into the design of the fill bank, limited height of the fill bank, that the height of the fill bank will only build up gradually, and the relatively short duration of exposure of the nearby VSRs, the unmitigated visual impact on the nearby workers and road users is considered slight.  Visual impact control measures are planned in terms of applying hydroseeding or coloured geo-textile matting (dark green/ brown) on the final slope surfaces of the fill bank as they are formed along the eastern, northern and western sides of the fill bank. 

5.1.24           To further soften the landscape, a buffer tree planting strip will also be provided along the northern perimeter of the site where space permits (see Figure 12).  A row of approximately 3m high native evergreen tree species with a tall habit such as the tree Casuarina equisetifolia will be planted at the early establishment/ operational phase of the project. To ensure the proper implementation of these measures, the contractor will be required to hire a Government approved landscape sub-contractor to undertake and maintain the hydroseeding and tree planting works.  The landscape and visual control measures are included into the list of environmental control measures in Attachment I.

5.1.25           The project site is situated in an undeveloped newly reclaimed land with some nearby industrial premises.  The site is situated at significant distance away from residential developments.  With the provision of the planned landscape/visual impact control measures, the potential impact would be controlled to within acceptable levels.

 


5.2                   Comment on the Possible Severity, Distribution and Duration of Environmental Effects

Environmental Problem Avoided

5.2.1              The proposed fill bank will provide an outlet for temporary storage of a total quantity of 4.9 million cubic metres public fill for subsequent reuse in reclamation projects.  Without the proposed fill bank, there will be a significant shortfall in public filling capacity in the territory and the likely consequence is that a large quantity of reusable inert public fill may inevitably need to be disposed of to landfills.  The landfill spaces are expensive and designed for disposal of municipal waste and have been spent far more rapidly than originally planned for.  The disposal of reusable public fill to the landfills should therefore be avoided as far as possible.

5.2.2              The beneficial reuse of public fill in reclamation projects (and earth filling projects) will reduce the reliance of these projects on general fill.  Thus, the proposed fill bank at Tuen Mun Area 38 would help to conserve the natural resources through minimising earth borrowing activities and marine sand extraction.  Provision of stable outlets on public fill for the construction industry is also important as a measure to discourage generation of mixed C&D material at construction sites as well as illegal dumping, and encourage onsite sorting of C&D material for their subsequent reuse at public filling areas. 

Environmental Protection Measures Provided

5.2.3              The fill bank will be of temporary nature and the decommissioning programme of the fill bank has considered the programme of the longer term uses planned in Tuen Mun Area 38.  The fill bank site selected is located away from all residential areas with the nearest residential developments situated at more than 2 km from the site.  The project may affecte a localised area and adequate environmental protection measures have been considered and incorporated into the design of and work activities at the fill bank to reduce the identified potential environmental impacts to acceptable levels.  The implementation of the environmental mitigation measures shall be checked by an Environmental Team and audited by an Independent Environmental Checker (IEC). 

 

5.3                   History of Similar Projects

5.3.1              CED has developed a fill bank of similar nature in Tseung Kwan O Area 137.   This fill bank has commenced operation in October this year.

 

5.4                   Use of previously Approved EIA Reports

5.4.1              Reference has been made to the Environmental Impact Assessment carried out under Agreement No. CE 57/2001 Environmental and Traffic Impact Assessment Study for Fill Bank at Tseung Kwan O Area 137.  Details of this approved EIA report are listed below:

Title of the approved EIA report

5.4.2              Environmental and Traffic Impact Assessment Study for Fill Bank at Tseung Kwan O Area 137 – Environmental Impact Assessment Report.

 

Date of Approval

5.4.3              The EIA Report was approved on 27 June 2002 (DEP’s letter of approval dated 27 June 2002 of reference (40) in Ax (5) to EP 2/N8/C/23 II refers).

 


Environmental aspects addressed in the approved EIA Report

5.4.4              The key environmental aspects addressed in the approved EIA report include air quality, noise, water quality, landfill gas hazard, as well as landscape and visual.

 

Key findings of the approved EIA Report

5.4.5              The approved EIA report identified that the environmental impacts were identified to be either within acceptable levels, or where mitigation measures are necessary, the environmental mitigation measures incorporated into the design of and work activities at the fill bank will mitigate the environmental impacts to within acceptable levels.  The approved EIA report carried out for the fill bank at Tseung Kwan O (TKO) Area 137, which is also located in a mixed undeveloped/ industrial environment as the proposed fill bank at Tuen Mun Area 38, demonstrated that with the provision of appropriate environmental mitigation measures in the establishment, operation and decommissioning of the fill bank, the implementation of the project would unlikely pose any unacceptable environmental impact.

 

Measures recommended in the approved EIA report and their Relevance of such findings to this Project

5.4.6              Air Quality Impact – the EIA identified fugitive dust emission to be the key concern and dust mitigation measures were recommended following the requirements stipulated in the Air Pollution Control (Construction Dust) Regulation.  Similar dust control measures have been considered and incorporated into the design of the proposed fill bank at Tuen Mun Area 38.

5.4.7              Noise – the EIA recommended the provision of a marine based transportation route for public fill intake at TKO Area 137 during the operational phase and removal of public fill during the decommissioning phase to minimise the potential truckload noise impact.  Similar barging facilities will also be provided at Tuen Mun Area 38 during the operation and decommissioning phases of the fill bank.

5.4.8              Water Quality – the EIA recommended the provision of control measures as best management practices to abate the potential water quality impact from non-point sources discharge.  Similar water quality control measures have been considered and incorporated into the design of the proposed fill bank at Tuen Mun Area 38.  

5.4.9              Landfill Gas Hazard – part of the fill bank at Tseung Kwan O Area 137 is lying within the 250m consultation zone of the South East New Territories (SENT) landfill.  The EIA report recommended that no underground drainage and sewerage system shall be constructed within the consultation zone, and container offices provided within the consultation zone shall be constructed on a raised hollow platform.  Similar landfill gas protection measures have been derived for the proposed fill bank at Tuen Mun Area 38.

5.4.10           Landscape and Visual – the EIA report recommended appropriate fill bank design and slope treatment in form of hydroseeding or use of coloured geo-textile matting as well as chromatic treatment of the onsite C&D Material Sorting Facility.  The fill bank design allows the fill bank to mimic the ridgeline of the Country Park and slopes down towards the coastline as occurs naturally to minimise the visual impact at the VSRs. Similar landscape/ visual control measures have been designed for implementation for the proposed fill bank at Tuen Mun Area 38.

5.4.11           The EIA report carried out for the fill bank at TKO Area 137 concluded that with the implementation of these measures, the establishment, operation and decommissioning of the fill bank will unlikely pose any unacceptable environmental impact.  An Environmental Permit (No. EP-134/2002) was issued by the Authority for the construction, operation and decommissioning of the fill bank.

 


6.                      Project Summary

Project Summary

6.1.1              This section presents a summary table presenting the key background and project design information, degree of impacts from the project and evaluation of acceptability, and where environmental control/ mitigation measures are recommended, the evaluation of acceptability of the residual environmental impact with reference to the relevant guidelines and criteria specified in the EIAO-TM.

6.1.2              As presented in the sections above and the summary Table 6-1, all relevant environmental factors associated with the establishment, operation and decommissioning of the proposed fill bank have been evaluated in this project profile.  The review indicated that the environmental impacts associated with the project are unlikely to be adverse.  And where environmental mitigation measures are identified necessary and recommended, effective and practicable environmental control/ mitigation measures that have been demonstrated in practices, have been recommended to mitigate the potential environmental impact to acceptable levels to meet the guidelines and criteria of the EIAO-TM.

 

Table 6-1       Fill Bank Project Summary Table

Background Information

·            The local construction industry generates large quantity of construction and demolition (C&D) material each year; major portion of C&D material is inert material and have been used beneficially in reclamation and earth filling projects;

·            Use of public fill in reclamation and earth filling projects reduces demand on general fill and help to conserve natural resources;

·            There will be a significant shortfall in public fill receiving capacity from 2002 to 2005;

·            CED proposes to establish, operate and decommission a temporary fill bank on a 35 hectare site located in Tuen Mun Area 38.  A similar fill bank is established in Tseung Kwan O Area 137;

·            Without the proposed fill bank, large quantity of reusable and inert public fill may inevitably need to be disposed of to landfills, including WENT. 

 

Project Design

·            Establishment works are planned to commence in March 2003 for intake of public fill from April 2003 though February 2005.  No further public fill intake is planned after February 2005.  Removal of stockpiled material would begin in July 2003 upon operation of the temporary Public Fill Sorting Facility for Penny’s Bay Reclamation Stage 2 (PBR2 Sorting Facility).  The fill bank will be fully decommissioned by February 2008;

·            The proposed fill bank will accommodate approximately 4.9 million cubic metres of public fill.  The fill bank will be filled up to a maximum height of 30m above ground (i.e. approximately +35mPD);

·            Key activities during the establishment phase will involve site clearance, setting up of machinery and temporary structures at the barge handling area for loading/ unloading of public fill to/ from barges; construction of drainage facilities including trapezoidal surface drainage channels, modification of existing wheel washing facilities, installation of weighbridges and construction of site offices;

·            The fill bank will be in operation from 8:00 a.m. to 8:00 p.m. daily except during the Chinese New Year holidays.  Both land-based and marine-based access will be provided in the operation of the fill bank.  Decommissioning of the fill bank will rely mainly on a marine route via delivery of fill material to the Penny’s Bay Reclamation Stage 2 and other reclamation sites.

 

 

Surrounding Environment

·            The fill bank site is situated in an undeveloped, newly reclaimed land with some nearby industrial premises.  The nearest residential developments are situated at more than 2 km from the site.  On the opposite side of Lung Mun Road is the restored Siu Lang Shui landfill.  An area of 3 hectares at the northern tip of the site is situated within the 250m consultation zone of the restored landfill; 

 

Degree of Environmental Impact and Acceptability of Mitigated Impact

Air Quality

·            Tuen Mun Area 38 has been operated as a public filling area.  TSP monitoring is carried out routinely on every 6-calendar days as part of an Environmental Monitoring and Audit Programme. The average 1-hr and 24-hr TSP concentrations monitored from September 01 to August 02 were 215 mg/m3 and 122 mg/m3 respectively, which are well below the 1-hr and 24-hr TSP criteria. The air quality modelling revealed that truck movement is the major source of dust contributor.  As the number of trucks in the operation of the fill bank will be similar to the existing operation of the public filling area, the dust monitoring results demonstrated that the potential dust impact would be surmountable and readily controlled to within acceptable levels though application of standard dust control measures;

·            Dust control measures have been recommended for implementation during the establishment, operation and decommissioning of the fill bank (see Attachment I for details).  These measures are based on those described in the Air Pollution Control (Construction Dust) Regulation which have been demonstrated to be effective in controlling fugitive dust emissions;

·            The air quality modelling of the worst-case scenarios demonstrated quantitatively that with the implementation of the recommended dust control measures, the mitigated highest 1-hr TSP and 24-hr average TSP concentrations at the ASRs would be within the acceptable levels specified in the EIAO-TM;

·            Implementation of the dust control measures implemented by the contractor will be checked through the recommended Environmental Monitoring and Audit Programme. 

 

Noise Impact

·            Construction works will be carried out during the non-restricted hours.  Operation and decommissioning of the fill bank will not be carried out from 8:00 p.m. to 8:00 a.m. the next day;

·            Given the vast distance separation between the NSRs and the proposed fill bank, use of Powered Mechanical Equipment during the establishment, operation and decommissioning of the fill bank will unlikely pose any significant noise impact exceeding the noise criteria specified in the EIAO-TM. Notwithstanding this, noise management measures have been recommended as good site practices (see Attachment I for details);

·            A marine-based access will be provided at the fill bank to allow the delivery of public fill by barges from the two barging points on the Hong Kong Island and thus minimise cross-district truck traffic;

·            In the presence of the other existing and planned public filling facilities, daily truck flow using the fill bank was estimated to be about 600 vehicles per day.  It was estimated that the maximum truck volume would not be more than 1,200 vehicles per day, or 156 veh/hr during the peak hour. The truck traffic generated from the operation of the proposed fill bank will be more or less the same as currently encountered in the operation of the public filling area in Tuen Mun Area 38. A significant portion of existing traffic has been diverted to use the new Lung Fu Road from Lung Mun Road.  Lung Fu Road is provided with traffic noise mitigation measures (setback, low noise surfacing and noise barriers).  Wong Chu Road connected with Lung Fu Road is also provided with noise enclosures and barriers.  With the provision of the new Lung Fu Road and the associated traffic noise mitigation measures, future operation of the fill bank will unlikely generate any unacceptable traffic related environmental impacts.

 

 

 

Water Quality Impact

·            Activities during the establishment, operation and decommissioning phases of the fill bank will be land-based.  Establishment works will only involve minor earthmoving/ excavation activities. Potential water quality impact would be associated with erosion of stockpiled material and accidental dropping of material during the transfer of fill material to the site by barges, if unmitigated;

·            Sufficient water pollution control measures have been recommended, including the provision of trapezoidal surface channels to intercept polluted surface runoff for treatment within sand/ de-silting traps before discharge, buffer zone between the stockpiling area and the seafront, protection of temporary and final slope surfaces, and use of specified transfer methods in delivery of material from barges, etc. (see Attachment I for details). 

·            The recommended water pollution control measures have been used in other projects and their effectiveness have been demonstrated in practice. The implementation of the planned water pollution control measures will control the potential water quality impact to within acceptable levels.

·            Implementation of the water pollution control measures will be checked through an Environmental Monitoring and Audit Programme.

 

 

Landfill Gas Hazard

·            Landfill gas monitoring data at source revealed that methane concentrations were mostly at or below 1% v/v.  Facilities planned within a 3 hectare area situated within the 250m consultation zone of the restored Siu Lang Shui landfill include the existing access road, wheel washing bay, weighbridges, public fill stockpiling area and surface drainage channel. The sensitivity of these uses to landfill gas migration is evaluated to be low;

·            Main site offices of the fill bank will be constructed outside the region lying within the 250m consltation zone of the restored Siu Lang Shui landfill.  No underground drainage and sewerage system including underground pipelines and chambers will be constructed within the region lying within the consultation zone.  Access to the fill bank by the general public will be restricted. Container office(s) at the site entrance/ exit situated within the consultation zone will be constructed on a raised hollow platform to avoid the trapping of landfill gas.  Other landfill gas control measures, as well as leachate management measures, are as described in Attachment I.

·            With the provision of these landfill gas control measures, the risk from landfill gas and leachate migration will be controlled to within acceptable levels.

 

 

Landscape and Visual Impact

·            The project site is a newly reclaimed land without existing trees.  Potential impact on existing landscape value of the site is not identified as a concern;

·            Nearest high-rise residential buildings at Melody Garden and Butterfly Estate are situated at more than 2km from the site, and with limited angle of view to the fill bank.  Workers in the nearby factories, G/IC and road users at Lung Mun Road could be affected visually with respect to the lower level views from these sites.  However, given the temporary nature of the project, limited height of the fill bank, short duration of exposure of these VSRs to fill bank and that the height of the fill bank will only be developed gradually platform by platform, the potential visual impact on these VSRs is not considered to be significant;

·            Notwithstanding this, visual control measures, including the application of hydroseeding or coloured geo-textile matting (dark green/ brown) on the slope surfaces of the fill bank will minimise any potential visual impact to acceptable range;

 

·            To further soften the landscape, a buffer tree planting strip will also be provided along the northern perimeter of the site where space permits (see Figure 12).  A row of approximately 3m high native evergreen tree species with a tall habit such as the tree Casuarina equisetifolia will be planted at the early establishment/ operational phase of the project. The contractor will be required to hire a Government approved landscape sub-contractor to undertake and maintain the hydroseeding and tree planting works.

·            The design, colour and finish of structures at the fill bank should be visually recessive.  Reflectivity should be reduced and bold colour scheme should be avoided.

 

 

Waste Management

·            The fill bank will not accept waste material.  This will be implemented through the existing dumping licence conditions which require that materials delivered to public filling facilities are free from household refuse, plastic, animal and vegetable matter, etc.;

·            In the handling of the public fill delivered to the site such as laying and compaction of fill material, the filling supervisor will require the C&D waste identified to be separated and collected for disposal to landfill.

 

 

Ecological Impact

·            The fill bank will occupy a newly reclaimed site and surrounded by industrial landuses to the east and west of the site.  Given the disturbed nature of the site and its immediate surrounding environment, existing ecological resources are lacking.  Implementation of the fill bank will unlikely pose any ecological impact of concern.

 


Figure 1         Key Plan showing Site Location and Layout Plan showing the Preliminary Design of the Fill Bank


Figure 2         Sectional View of the Proposed Fill Bank


Figure 3         Preliminary Development Programme of the Fill Bank


Figure 4         Longer Term Land Uses in Tuen Mun Area 38 under Planning


Figure 5         Extracts of Outline Zoning Plan (S/TM/16)


Figure 6         Consultation Zone of the Restored Siu Lang Shui Landfill


Figure 7         Truckload Control Zone Recommended as a Dust Control Measure


Figure 8         Location of the existing TSP Monitoring Station under Tuen Mun Area 38 Reclamation, Stage 2


Figure 9         Existing Traffic Noise Mitigation Measures provided at Lung Fu Road and Wong Chu Road


Figure 10       Indicative Locations of the Proposed TSP Monitoring Stations


Figure 11       Indicative Locations of the Recommended Control and Impact Water Quality Monitoring Stations


Figure 12       Buffer Planting Strip along the Northern Perimeter of the Site


 

 

 

Attachment I

Environmental protection measures incorporated into the design of the Fill bank project

 

 


Annex I

Fugitive Dust Impact Assessment

 

 

Annex II

STATEMENT OF wATER qUALITY oBJECTIVES

(nORTH wESTERN WATER CONTROL ZONE)

 

 


Annex III

          Locations of Landfill Gas Monitoring PointS

and

methane concentrations monitored in a recent 14 monthS period

 

 


Annex IV

Typical design of sand trap (CED Drawing No. GC 1034)