Proposed Debris Resisting Barriers at Area N1 North, Discovery Bay, Lantau Island
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Proposed Debris Resisting Barriers at Area N1 North, Discovery Bay, Lantau Island Project Profile June 2005 Area N1 North, Discovery Bay, Lantau Island Proposed Debris Resisting Barriers Table of Contents TABLE OF CONTENTS Page No. 1. Basic Information.......................................................................................................1 1.1 Project Title..........................................................................................................1 1.2 Purpose and Nature of the Project.......................................................................1 1.3 Name of Project Proponent..................................................................................1 1.4 Location and Scale of Project ..............................................................................2 1.5 Environmental Impact Assessment Ordinance Status ..........................................2 1.6 Name and Telephone Number of Contact Person................................................2 2. Outline of Planning and Implementation Programme..............................................2 2.1 Implementation and Planning of the Proposed Project.........................................2 2.2 Site Selection.......................................................................................................2 2.3 Project Time Table ...............................................................................................2 2.4 Interactions with Broader Programme or Other Projects ......................................3 3. Major Elements of the Surrounding Environment....................................................3 3.1 Existing and Planned Sensitive Receivers and Sensitive Parts of the Natural Environment that might be affected by the Proposed Project...............................3 3.2 Elements of Surrounding Environment Which Might Affect the Project.................4 4. Possible Impacts on the Environment ......................................................................4 4.1 Summary of Potential Environmental Impacts......................................................4 4.2 Process Involved, including Process Flow Diagrams, Site Plans, Storage Requirements, and Information on Emissions and Discharges ............................5 4.3 Environmental Impacts During Construction Phase .............................................5 4.4 Environmental Impacts During Operational Phase...............................................9 5. Environmental Protection Measures to be Incorporated in the Design and Any Further Environmental Implications..........................................................................9 5.1 Measures to Minimise Environmental Impacts .....................................................9 5.2 Comment on the Possible Severity, Distribution and Duration of Environmental Effects................................................................................................................10 5.3 Comment on any Further Implications ...............................................................10 5.4 Use of Previous Approved EIA........................................................................... 11 6. Conclusion................................................................................................................11 Project Profile Page i Area N1 North, Discovery Bay, Lantau Island Proposed Debris Resisting Barriers Table of Contents LIST OF TABLES Table 4.1 Potential Sources of Environmental Impacts Table 4.2 Construction Equipment for a Debris-resisting Barrier Table 4.3 Construction Noise Levels Predicted at Peaceful Mansion LIST OF APPENDICES Appendix 1 Figures Appendix 2 Construction Noise Assessment Appendix 3 Landscape and Visual Impact Assessment Project Profile Page ii Area N1 North, Discovery Bay, Lantau Island Proposed Debris Resisting Barriers Project Profile 1. BASIC INFORMATION 1.1 Project Title Proposed Debris Resisting Barriers at Area N1 North, Discovery Bay, Lantau Island. 1.2 Purpose and Nature of the Project The Discovery Bay Outline Zoning Plan No. S/I-DB/3 has reserved several sites for residential development (zoned as R(C) 2 Areas A and B) within D.D. 352 Lot 385 RP & Ext, Area N1 North in Discovery Bay. Site Formation Plans have been submitted to the Buildings Department (BD) for the residential sites and was approved on 12th June 2003. As a result of the BD submission, the Geotechnical Engineering Office (GEO) of Civil Engineering and Development Department (CEDD) has requested that structures on the hillslopes to be provided to capture possible loose debris and safeguard the residential developments in the event of a landslip, although unlikely. A comprehensive consultation exercise has been conducted with GEO and Drainage Services Department (DSD) and a debris-resisting barrier option has been accepted by GEO and DSD to achieve the safety requirements. HKR has submitted a Section 16 Application under the Town Planning Ordinance (TPO) for the construction of two debris-resisting barriers (hereafter referred to as the Barriers) and their associated site formation works and has been approved with conditions by the Town Planning Board (TPB) on 14th January 2005. A condition of the approval is to obtain an Environmental Permit (EP) for the construction and operation of the Barriers under the Environmental Impact Assessment Ordinance (EIAO). According to the Discovery Bay Outline Zoning Plan (OZP) No. S/I-DB/4, the sites upon which the two Barriers are to be constructed lie partially within a “Conservation Area” (“CA”) zone. According to the EIAO, the construction and operation of the Barriers is classified as a Designated Project under the EIAO. This Project Profile (PP) includes an assessment of the potential environmental impacts associated with the construction and operation of the two Barriers. The assessment has been based on information provided by the Project Proponent and the Civil Engineering Designer. A Landscape and Visual Impact Assessment (LVIA) that includes the landscape master plan and visual mitigation measures has also been undertaken as part of the Section 16 approval process and is attached to this submission. 1.3 Name of Project Proponent Hong Kong Resort Company Limited 23/F., China Merchants Tower Shun Tak Centre 168-200 Connaught Road Central Hong Kong Tel: 2238-1188 Fax: 2987-6809 Project Profile Page 1 Area N1 North, Discovery Bay, Lantau Island Proposed Debris Resisting Barriers Project Profile 1.4 Location and Scale of Project The proposed Barriers are located at D.D. 352 Lot 385 RP & Ext, Area N1 North in Discovery Bay (Appendix 1, Figure 1.1). The total area of the two Barriers is approximately 2,600 m2. Due to safety requirements and topographic constraints, the structures fall beyond the boundary of the Discovery Bay residential development and hence encroach into the adjacent hillslopes of the “Conservation Area” (“CA”) zone. The proposed Barriers are located upstream directly north of the current roundabout at the junction of Discovery Bay Tunnel and Discovery Bay Road on the hillslopes. The slopes were previously covered in shrub and woodland but the vegetation has been destroyed by a hill fire at the end of 2004. 1.5 Environmental Impact Assessment Ordinance Status The Barriers are located in the “CA” zone of the current Discovery Bay OZP No. S/I-DB/4 (approved on 1st February 2005). The Barriers location in relation to the OZP “CA” zone boundary is shown in Appendix 1, Figure 1.2. This PP covers one classification of a Designated Project under the EIAO, Schedule 2, Part I, Q – Miscellaneous, Q.1. 1.6 Name and Telephone Number of Contact Person The Project Manager for HKR for this project is: Mr. Wilson Cheung Telephone: 2238-1188 2. OUTLINE OF PLANNING AND IMPLEMENTATION PROGRAMME 2.1 Implementation and Planning of the Proposed Project HKR has appointed Atkins China Limited (Atkins) as their Civil Consultant for the preparation of the detailed design of the Barriers and DLS HK Limited is the Quantity Surveyor responsible for the preparation of the above mentioned contract documents. Urbis Limited is responsible for the associated Planning Application for the proposed Barriers construction and operation, and also for the preparation and implementation of a Landscape Master Plan and Visual Mitigation Measures as required for the Section 16 Planning Approval conditions. 2.2 Site Selection The proposed Barriers are required as safety measures for the future residential development of Discovery Bay North. Various options were presented and this option was the design that was accepted by GEO and DSD. The Barriers have been positioned at strategic locations where the structures can most effectively collect the upstream debris and for optimal performance and safety and have been located at rock outcrops to minimise the extent of slope cutting works. 2.3 Project Time Table The target commencement date for the construction of the Barriers is July 2005. The construction of the two Barriers is expected to be completed by July 2006. Project Profile Page 2 Area N1 North, Discovery Bay, Lantau Island Proposed Debris Resisting Barriers Project Profile 2.4 Interactions with Broader Programme or Other Projects The site formation works for the future Discovery Bay North Residential Development in Area N1 are located immediately south of the Barriers and it is anticipated that there will be concurrent construction works from these activities with the proposed project. This has been reviewed in the following PP. Further, there are