10 SUMMARY OF ENVIRONMENTAL OUTCOMES

10.1 Overview

10.1.1.1 Section 2 outlines the details and benefit of the Project together with the consideration of alternatives during the preliminary design stage, in which has taken into account of findings of various engineering and environmental review. The technical assessments in Sections 3 to 8 have demonstrated that all the statutory requirements in EIA Study Brief (ESB-316/2019) and EIAO-TM have been compiled with.

10.1.1.2 This chapter summarizes the key environmental outcomes arising from this EIA study, the approaches that have been adopted to either avoid or minimize various environmental impacts throughout the design process, and the associated environmental enhancements and mitigation measures.

10.2 Environmental Benefits of the Project

10.2.1.1 The purposes and objectives of the Project are to alleviate the forecast traffic demand from the ongoing WKCD development and also the elevated Nga Cheung Road roundabout, which is already congested by providing connection to the at-grade road at the WKCD and the West Kowloon Highway (Route 3 – West Harbour Crossing Tunnel Area).

10.2.1.2 With the introduction of a single ramp connecting to the Museum Drive at the WKCD, it will help to disperse traffic away from the busy elevated junction of Jordan Road / Nga Cheung Road and also provide a short cut between the Kowloon Station Topside Developments and the West Kowloon Highway.

10.3 Incorporation of Environmentally Friendly Options

10.3.1.1 Avoidance of environmental impacts has been one of the key considerations in this EIA study. For those impacts that could not be avoided, due consideration has been given to minimize those impacts as much as practicable so that all the residual impacts would comply with statutory requirements. Avoidance of encroachment of the project road alignment into potentially contaminated area at the New Yau Ma Tei Public Cargo Working Area (PCWA) has been considered in the selection of options.

10.3.1.2 A potentially contaminated area (i.e. vehicle maintenance area) has been identified at the New Yau Ma Tei PCWA within the site boundary. To avoid land contamination impacts, there would be no encroachment of the project road alignment into the New Yau Ma Tei PCWA and no construction works would be conducted within the PCWA. As such, no land contamination impacts would be anticipated during both construction and operation phases of the Project.

10.4 Environmental Design Recommended

10.4.1.1 Other than initiatives to avoid environmental impacts as summarized in Section 10.3, further efforts have been exercised to minimize impacts. The need for any environmental designs required to mitigate the associated impacts have also been identified and will be implemented, as appropriate. A summary of these approaches is given below:

· Adoption of environmentally friendly construction method;

· Implementation of trip-ticket system; and

· Implementation of environmental monitoring and auditing system.

Adoption of Environmentally Friendly Construction Method

10.4.1.2 Precast construction method would be adopted as far as possible, with bridge deck formed from precast concrete sections which will be manufactured off site and joined together on site, which minimize the extent and duration of construction activities required on site and hence the potential environmental impacts in the vicinity during construction. Other construction methods would be considered only when precast construction method is not feasible.

Implementation of Trip-Ticket System

10.4.1.3 In order to monitor, document and verify the disposal of C&D materials at landfills and public fill reception facilities, as appropriate, and to control fly tipping, a trip-ticket system for disposal of construction and demolition materials would be implemented.

Implementation of Environmental Monitoring and Auditing System

10.4.1.4 In addition to the mitigation measures as described above (see more details in the Implementation Schedule of Recommended Mitigation Measures as given in Appendix 9.1), a comprehensive environmental monitoring and auditing programme would be implemented to cover various aspects of concern. An independent environmental checker would also be employed to ensure that all the necessary mitigation measures are implemented in a timely and orderly manner.

10.5 Key Environmental Problems Avoided and Environmentally Sensitive Areas Protected

10.5.1.1 Sections 10.3 and 10.4 have summarized the key approaches adopted in the current proposal to avoid, minimize and mitigate environmental impacts. Some of these approaches have contributed to avoid a number of environmental problems and to protect a number of environmentally sensitive areas. Table 10.1 presents the key environmental problems that have been avoided and any sensitive areas protected by these approaches.

Table 10.1 Summary of Key Environmental Problems Avoided and Sensitive Areas Protected

Design Approach	Environmental Problems Avoided and Sensitive Areas Protected
Avoidance of encroachment of the project road alignment into potentially contaminated area (New Yau Ma Tei PCWA) (Section 10.3.1.2)	· Avoid construction works in potentially contaminated area to minimize land contamination impacts.
Adoption of environmentally friendly construction method (Section 10.4.1.2)	· Adoption of precast concrete method as far as possible to minimize the extent and duration of construction activities required on site and hence minimize the potential impacts during construction phase as far as possible.
Implementation of trip-ticket system (Section 10.4.1.3)	· Implementation of trip-ticket system to monitor, document and verify the disposal of C&D materials and control fly tipping.
Implementation of Environmental Monitoring and Auditing System (Section 10.4.1.4)	· Ensure all the recommended measures are properly in place and their effectiveness.

10.6 Environmental Protection Measures Recommended

10.6.1.1 Mitigation measures have been recommended to further reduce the environmental impacts due to construction and operation of the Project. Key recommended mitigation measures and any associated benefits are summarized in Table 10.2 below.

Table 10.2 Key Recommended Mitigation Measures

Environmental Aspect	Mitigation Measure and any Associated Benefit
Air Quality Impact	· The approved non-road mobile machinery (NRMMs) under NRMM Regulation (excluding exempted NRMMs) would be used on site and NRMMs supplied with mains electricity instead of diesel-powered should be adopted as far as possible to minimize the potential emission from NRMMs. · Implementation of dust suppression measures as required in the Air Pollution Control (Construction Dust) Regulation to minimize construction dust impact. · Although unacceptable air quality impact is not anticipated due to the Project during the operation phase, some mitigation measures such as relocation of fresh air intakes at elevated levels with AQO compliance and provision of air purification filters have been considered due to the high background level of NO2. For the existing ASRs, planned ASRs under construction and planned ASRs with detailed design, these mitigation measures were considered not feasible in time as the designs have already been completed or in some cases even physical buildings have been completed. For the planned ASRs without detailed design, the future WKCD project owner(s) within the Study Area would be notified of the findings under this air quality impact assessment in EIA of Revised Austin Road Flyover for consideration so that the relevant mitigation measures could be implemented as far as practicable.
Noise Impact	· Implementation of good site practice to minimize construction noise impact.
Water Quality Impact	· Implementation of site practices as outlined in ProPECC Note PN 1/94 to control and minimize site runoff and drainage. · Minimum distances of 100m should be maintained between the discharge points of construction site effluent and no effluent shall be discharged into the typhoon shelter. · Adoption of proper site management and good housekeeping practices to minimize the potential water quality impact due to spillage events. · Provision of silt trap for road drainage for removal of pollutants from storm water. · Collection and conveyance of sewage effluent from the proposed toilets to the existing sewerage system.
Waste Management Implications	· Implementation of good site practices and waste reduction measures (e.g. reuse of construction and demolition (C&D) materials before off-site disposal or develop a materials recovery and recycling programme during construction and operation). · Implementation of proper storage, collection and transportation of waste. · Preparation of a Waste Management Plan (WMP), as part of the Environmental Management Plan (EMP). · Implementation of trip-ticket system for each works contract in accordance with DevB TC(W) No. 6/2010 to ensure that the disposal of C&D materials is properly documented and verified.
Land Contamination	· No land contamination impacts would be anticipated from the Project, therefore, no mitigation measures are required.
Landscape and Visual Impacts	· Implementation of landscape and visual mitigation measures for construction phase and operation phase.

10.7 E stimation of Population Protected

10.7.1.1 Population and environmental sensitive areas in the vicinity of the Project site have been protected through the avoidance and/or minimization of environmental impacts from the construction and operation the Project. Population protected from air quality impacts include air sensitive receivers within 500m from the Project Boundary including residential buildings, commercial buildings, hotel developments and government/institutional or community uses. Population protected from noise impacts include noise sensitive receivers within 300m from the Project Boundary including residential buildings. Population protected from water quality impacts include water sensitive receivers within 500m from the Project Boundary including New Yau Ma Tei Typhoon Shelter, nearby flushing water intakes and cooling water intakes. Potentially contaminated area protected from land contamination impacts include the New Yau Ma Tei PCWA.