Construction Phase

3.43 – 3.46

Use of quiet powered mechanical equipment (PME).  Quiet plant is defined as a PME having actual sound power level lower than the value specified in the Technical Memorandum on Noise from Construction Work other than Percussive Piling.  (Examples of quiet PME taken from the BS5228: Part1: 1997 are given in Table 3.7 of the EIA Report). 

Noise Control

Construction site / During the construction period

Contractor

Ö

Annex 5 EIAO-TM

NCO

3.47 – 3.49

Adoption of movable noise barrier of 3 to 5 m high (depending on the size of the plant that requires to be screened).  The length of the barriers should be at least five times greater than its height. The barrier shall be located within 10a few metres of the stationary plant or mobile plant such that the line of sight to the NSR is blocked by the barrier.

Noise Control

Construction site / During the construction period

Contractor

Ö

Annex 5 EIAO-TM

NCO

Operational Phase

3.53

For Existing NSRs

A 1.5m high reflective plain barrier of about 121m long erected along the western edge of Slip Road A (refer to Figure 3.6 of the EIA Report).

Noise Control

Slip Road A / During operational period

HyDProject Proponent

Ö

Annex 5 EIAO-TM

3.53

For Future/Planned NSRs

A 2m high reflective plain barrier of about 303m be erected along Slip Road F(refer to Figure 3.6 of the EIA Report) (only footings of the barrier are required before operation of the Project, and implementation of the barrier is only required before occupation of the planned residential premises).

Noise Control

Slip Road F and Junction of Castle Peak Road and slip road of San Tin Highway / During operational period when occupation of the planned residential premises

HyDProject Proponent

Ö

Annex 5 EIAO-TM

4.41

Dust mitigation measures stipulated in the Air Pollution Control (Construction Dust) Regulation shall be incorporated to control dust emission.  Notice shall be given to the authority prior to commencement of works

Dust Control

Construction site/ During construction period

Contractor

Ö

Air Pollution Control (Construction Dust) Regulation

S5.1

Under the proposed design, there shall be not be supports for the slip roads and Bridge A located within the San Tin River nor the San Tin Eastern Main Drainage Channel.

To minimize impacts on water quality

Project site

HyDProject Proponent

Ö

Ö

S5.25

A Drainage Management Plan (DMP) shall be prepared by the Contractor and submitted to EPD within two weeks of the award of contract and before the commencement of any site formation construction works or earthworks on-site. The DMP shallto detail the procedures for control of construction site runoff.  The DMP shall at least cover the construction works areas for slip roads E and F and for Bridge A, and the local widening of the existing Castle Peak Road.  No site run-off nor drainage discharge shall enter fishponds.  The DMP shall follow the site practices given in ProPECC PN 1/94 Construction Site Drainagewith regard to the handling and disposal of construction site discharges.

To minimize water quality impacts arising from site runoff and drainage

Work site / During the Construction period

Contractor

Ö

S5.31

A water quality EM&A programme is recommended during the site clearance and formation of the at-grade road sections for slip roads E and F and for Bridge A, and the local widening of the existing Castle Peak Road.

To monitor effectiveness of water quality mitigation measures

Work site / During the construction period

Environmental Team

Ö

7.910

·          Where the slip road runs adjacent to the San Tin EMDC wetlands, a roadside barrier wall (2m high) shall be constructed to minimize operation phase noise disturbance to the wetlands. Furthermore, a 2m buffer strip shall be planted with trees and other dense vegetation to provide a visual screen between the slip road and the wetlands (refer to Figure 7.3 of the EIA Report).

To minimize potential noise disturbance to ecological sensitive receivers

Project Proponent

Ö

Ö

-

7.932

·          Landscaping works should maximize use of native plant species of high conservation value to birds and other wildlife. Examples of species of known conservation value are given in Table 7.5 of the EIA Report.

Project Proponent

Ö

-

S6.21 – 6.23

Waste Management Plan

The Contractor should incorporate the recommendations in the EIA Report into a comprehensive on-site Waste Management Plan (WMP) for the construction of the Project.   The WMP shall be prepared in accordance with ETWB TC No. 15/2003 and submitted to the Engineer for approval.  All mitigation measures arising from the approved WMP shall be fully implemented by the Contractor.

In order to monitor the disposal of C&D materials at public filling facilities and to control fly tipping, the Trip-ticket System in accordance with ETWB TC No. 21/20023 shall be included as one of the contractual requirements.  Disposal of C&D material shall only be permitted at the public filling facility designated by CED. 

To ensure proper waste management

Work site / During the construction period

Contractor

Ö

Waste Disposal Ordinance (Cap.354)

Public Health and Municipal Services Ordinance (Cap. 132)

Land (Miscellaneous Provisions) Ordinance (Cap. 28)

ETWB TCW No.21/20023, 15/2003

S6.25

General Refuse

General refuse shall be stored in enclosed bins or compaction units separate from C&D material.  A reputable waste collector shall be employed by the contractor to remove general refuse from the site, separately from C&D material.  An enclosed and covered area is preferred to reduce the occurrence of 'wind blown' light material.

To ensure proper management of general refuse

Work site / During the construction period

Contractor

Ö

Public Health and Municipal Services Ordinance (Cap. 132)

S6.28

Chemical Waste

If chemical wastes are produced at the construction site, the Contractor shall register with the EPD as a Chemical Waste Producer and follow the guidelines stated in the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes. Good quality containers compatible with the chemical wastes shall be used, and incompatible chemicals shall be stored separately.  Appropriate labels shall be securely attached on each chemical waste container indicating the corresponding chemical characteristics of the chemical waste, such as explosives, flammable, oxidizing, irritant, toxic, harmful, corrosive, etc.  The Contractor shall use a licensed collector to transport and dispose of the chemical wastes generated at the Chemical Waste Treatment Centre at Tsing Yi, or other licenced facility, in accordance with the Waste Disposal (Chemical Waste) (General) Regulation.

To ensure proper  management of chemical waste

Work site / During the construction period

Contractor

Ö

Waste Disposal (Chemical Waste) (General) Regulation (Cap. 354)

S11.32

      Land Contamination Assessment

i)    Proposition and review of Contamination Assessment Plan (CAP), which should be submitted to EPD for endorsement, prior to site investigation works

ii)   Commencement of land contamination assessment works based upon the endorsed CAP

iii)  Submission of Contamination Assessment Report (CAR) for EPD’s approval. 

iv)  If contamination is identified in the CAR, a Remediation Action Plan (RAP) should be submitted to EPD for approval

v)   Commencement of site cleanup works based upon the approved RAP

To formulate CAP and CAR to assess the land contamination impact

Proposed Potential Zone S-a for Site Contamination Investigation (Zone S-a)  / during decommissioning (if any) or prior site clearance / excavation works

Zone S-e / during decommissioning (if any) or prior site clearance / excavation works

Project Proponent

Ö

ProPECC PN3/94 and Guidance Notes for Investigation and Remediation of Contaminated Sites of: Petrol Filling Stations, Boatyards, and Car Repair / Dismantling Workshops

S11.33

      Mitigation Measures for Workers’ Health and Safety

·          Site workers should wear appropriate personal protective equipment (i.e. gloves, mask) when exposed to potential contaminated soil and groundwater

·          Eating, drinking and smoking should be prohibited in contaminated areas to avoid advertent ingestion of contaminants

·          Stockpiling of contaminated soil should be avoided as far as possible.  If this cannot be avoided, the stockpile of contaminated material should be segregated from the uncontaminated ones.  Moreover, the contaminated materials should be properly covered with appropriate material (e.g. tarpaulin) to avoid leaching of contaminants, especially during heavy rainstorm

·          Bulk earth moving equipment should be utilized as much as possible to minimize handling and contact of contaminated materials of the workers

·          Adequate washing facilities should be provided on site

·          If disposal of excavated contaminated soil is needed, the Contractor should dispose the contaminated soil according to the requirements agreed by EPD

To minimize any potential exposure to contaminated soil and groundwater during construction phase

Zone S-a / during decommissioning (if any) or prior site clearance / excavation works

Zone S-e / during decommissioning (if any) or prior site clearance / excavation works

Contractor

Ö

Waste Disposal Ordinance, Waste Disposal (Chemical Waste) (General) Regulation

S10.78

Advance tree transplanting of existing road side trees affected by the proposed improvement works

Preservation of existing trees

Commencement of construction

Project proponent

Ö

Require advance tree surgery preparation

S10.78

Advance boundary planting, new compensatory planting on area not affected by the proposed improvement works

Landscape compensation

Commencement of construction

Project proponent

Ö

Project Area not affected with advance planting work arrangement

S10.78

Advance screen planting, new compensatory planting on area not affected by the proposed improvement works

Visual screen

Commencement of construction

Project proponent

Ö

Project Area not affected with advance planting work arrangement

S10.78

Soil conservation – conservation of existing and imported soil resources.  Existing soil resources on site will be conserved in stockpiles with a maximum height of 2m.  All material stockpiles should be covered with an impermeable material and sandbagging diversions should also be placed around exposed soil.  Material stockpiled should be in area with the least obstruction to residential, pedestrian

Conservation of existing topsoil

Commencement of construction and throughout construction period

Project proponent

Ö

Project Area not affected for stockpile

S10.78

Selection of fast growing native tree and shrub mixes in compensation for the removal/disturbance area.  Compensatory planting should be at a minimum 1 to 3 basis.  An approximate of 700 nos. of compensatory planting will be planted along the edges to soften and screen the built elements and mitigate the landscape and visual impact.  The combination of natives tree and shrub mixes will provide a more diverse edge effect and break up the overall visual dominance (refer to Figure 10.22 of the EIA Report).

Landscape compensation

Commencement of construction and throughout construction period

Project proponent

Ö

Selection and agree on the specified plant species

S10.78

Foundation planting below and adjacent to viaduct as well as noise barrier with new compensatory planting

Visual screen / Landscape compensation

Throughout the construction period

Project proponent

Ö

Selection and agree on the plant species

LMM7

Sensitive design with chromatic treatment for the viaduct structure will improve the visual quality of the proposed improvement works

Visual enhancement

Commencement of construction and throughout the construction period

Project proponent

Y

HYD

LMM8

Sensitive design with semi-transparent treatment of noise barrier for through view

Visual enhancement

Commencement of construction and throughout the construction period

Project proponent

Y

HYD