Reconstruction of Sham Chung Public Pier, Sai Kung North, Tai Po
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The Government of the Hong Kong Special Administrative Region Civil Engineering Department Reconstruction of Sham Chung Public Pier, Sai Kung North, Tai Po Project Profile November 2003 Reconstruction of Sham Chung Public Pier, Sai Kung North, Tai Po Project Profile Contents 1. Basic Information...................................................................................................... P.3 1.1 Project Title ....................................................................................................... P.3 1.2 Purpose and Nature of the Project ...................................................................... P.3 1.3 Name of Project Proponent ................................................................................ P.3 1.4 Location of Project, Scale of Project and History of Site .................................... P.3 1.5 Number and Types of Designated Projects to be Covered by the Project Profile.. P.4 1.6 Name and Telephone Number of Contact Persons .............................................. P.4 1.7 Estimated Cost ................................................................................................... P.4 2. Outline of Planning and Implementation Programme ............................................ P.5 3. Existing Sensitive Receivers ..................................................................................... P.5 3.1 Sai Kung West Country Park.............................................................................. P.5 3.2 Site of Cultural Heritage..................................................................................... P.5 3.3 Place of High Visual Value ................................................................................ P.6 3.4 Marine Traffic .................................................................................................... P.6 3.5 Town Planning .................................................................................................. P.6 3.6 Others ............................................................................................................... P.6 4. Possible Impacts on the Environment ...................................................................... P.7 (A) Short Term Impact during Construction ............................................................. P.7 4.1 Ecology.............................................................................................................. P.7 4.2 Water Quality..................................................................................................... P.7 4.3 Noise ................................................................................................................. P.8 4.4 Air Quality......................................................................................................... P.8 4.5 Traffic Impacts................................................................................................... P.8 4.6 Visual Appearance ............................................................................................. P.8 4.7 Cultural Heritage................................................................................................ P.9 4.8 Solid Waste........................................................................................................ P.9 4.9 Spoil Water ........................................................................................................ P.9 4.10 Odour ................................................................................................................ P.9 4.11 Dangerous Goods............................................................................................... P.9 (B) Long Term Impact during Operation .................................................................. P.9 Technical Services Division, Civil Engineering Department Page 1 Reconstruction of Sham Chung Public Pier, Sai Kung North, Tai Po Project Profile 5. Environmental Protection Measures to be Incorporated in the Design and Any Further Environmental Implications .......................................... P.10 5.1 Measures to Minimize Environmental Impacts.................................................. P.10 5.1.1 Water Quality ....................................................................................... P.10 5.1.2 Noise .................................................................................................... P.10 5.1.3 Air Quality............................................................................................ P.11 5.1.4 Ecology ................................................................................................ P.11 5.1.5 Visual Impact........................................................................................ P.12 5.2 Possible Severity, Distribution and Duration of Environmental Effects.............. P.12 5.3 Public Consultation........................................................................................... P.13 5.4 History of Similar Project ................................................................................. P.13 6. Use of Previously Approved EIA Reports .............................................................. P.13 7. Conclusion ............................................................................................................... P.14 8. Appendices Appendix A Drawing No. TS 2227 – General Layout Appendix B Drawing No. TS 2221 – General Arrangement of New Pier Appendix C Drawing No. TS 2225 – Proposed Silt Curtain Appendix D Drawing No. TS 2222 – Location of Sensitive Receivers Appendix E Drawing No. TS 2223A – Diving Inspection Report Technical Services Division, Civil Engineering Department Page 2 Reconstruction of Sham Chung Public Pier, Sai Kung North, Tai Po Project Profile 1. Basic Information 1.1 Project Title Reconstruction of Sham Chung Public Pier 1.2 Purpose and Nature of the Project The purpose of the project is to reconstruct the existing Sham Chung Public Pier at Sai Kung North of Tai Po. Recent inspection by the Civil Engineering Department (CED) reveals that the pier, which was constructed in 1960s using prestressed concrete members, is in a poor condition with spalling concrete and broken tendons. With increased inspection and frequent repair, we may be able to extend the life of the pier by a few years. However, from the maintenance point of view, it is very difficult and costly to repair the deteriorated prestressed tendons. At least more than $1 million is required for an extensive repairing work in order to extend the service life of a pier for about 5 years. Even with such costly repair, the long-term durability of the structure will still be limited and the appearance of a pier after this kind of remedial repairing work can never be restored to the original standard. Therefore, it is necessary to reconstruct the Sham Chung Public Pier which will have a design life of 50 years in accordance with Port Works Design Manual Part 1 (May 2002). In addition, we will also take this opportunity to enhance the appearance of the pier and to provide a design compatible with the surrounding landscape. 1.3 Name of Project Proponent Economic Development and Labour Bureau is the policy bureau. CED is the client department and the works agent for the planning, detailed design and works supervision of the project. 1.4 Location of Project, Scale of Project and History of Site The existing pier was built in 1960s. It is a public pier mainly for kaitos and pleasure vessels operating in Sai Kung North area. The proposed new pier is located adjacent to the existing pier. The proposed structural form of the new pier shall be open type suspended deck sitting on piles. Drawing Nos. TS 2227 and TS 2221 showing the location and general arrangement of the new pier are attached at Appendix A and B respectively. The scale of the works is small and the works comprise the following: Technical Services Division, Civil Engineering Department Page 3 Reconstruction of Sham Chung Public Pier, Sai Kung North, Tai Po Project Profile (i) The existing pier will be maintained until commissioning of the replacement pier; (ii) Drilling of about 38 numbers of pre-bored H-piles; (iii) Construction of about 410m2 reinforced concrete deck (including catwalk), with two sets of landing steps, fenders and one navigation light; (iv) Construction of roof with public lighting; and (v) Demolition of existing pier and delivery of the demolition material to designated site(s) as artificial reefs (approximately 300m3). No dredging and spoil dumping will be involved. A silt curtain will be installed prior to commencement of marine works. The location of the silt curtain is indicated on Drawing No. TS 2225 at Appendix C. 1.5 Number and Types of Designated Projects to be Covered by the Project Profile The project is a designated project under Section Q.1 of Schedule 2, Environmental Impact Assessment (EIA) Ordinance, as the proposed site boundary falls partly within the Sai Kung West Country Park. 1.6 Name and Telephone Number of Contact Persons Technical Services Division Civil Engineering Department Mr W L Chan, Senior Engineer, Tel: 2762 5553 Fax: 2714 2054 Email: [email protected] Mr Ricky C P Wong, Engineer, Tel: 2762 5564 Fax: 2714 2054 Email: [email protected] 1.7 Estimated Cost $ 26.0 million (at September 2003 price level). Technical Services Division, Civil Engineering Department Page 4 Reconstruction of Sham Chung Public Pier, Sai Kung North, Tai Po Project Profile 2. Outline of Planning and Implementation Programme