(2) Noise Barriers/ Enclosures

1. (2) Noise Barriers/ Enclosures Mini-Pile Foundation (for Areas below Tuen Mun Town Plaza) (2) Noise Barriers/ Enclosures

2. Greening System – Green Wall & Green Roof (2) Noise Barriers/ Enclosures We together with our exclusive greening partner – GreenWall Bioengineering (HK) Ltd. has designed a bioengineering solution for innovative greening: - GREEN WALL • Sansevieria Trifacsiata (矮虎尾蘭) and Sansevieria trifacsiata “Laurentill” (金邊虎尾蘭) - evergreen; minimal maintenance; drought durable; efficient CO2-reduction etc. (2) Noise Barriers/ Enclosures Sansevieria trifacsiata “Laurentill” (金邊虎尾蘭) Sansevieria Trifacsiata (矮虎尾蘭)

3. Greening System – Green Wall & Green Roof (2) Noise Barriers/ Enclosures GREEN ROOF • Arachis duranensis (金花生) • Sedum lineare (佛甲草) • Liriope spicata Dwarf (日本矮浦草) • Rhoeo discolor Dwarf (矮紫蚌花) Key Properties: • Evergreen; Colourful; • Minimal maintenance (approx.6-month cycle) • Suitable for Roof Planting (findings from planting trials for 3-yr) (2) Noise Barriers/ Enclosures

4. (2) Noise Barriers/ Enclosures Pre-Planting & Pre-Treatment Nursery • Pre-treatment in Plant Holder in Nursery for 2-month Biological Pre-Treatment Process – Full Growth & Establishment of Plant Species • Bio-organic Fertilizers – No chemical; Anti-fungal/ Moss/ Red-Fire Ants • Extra 1-month Intensive Root Growth on Vertical Pre-fabricated Panel for Green Wall (2) Noise Barriers/ Enclosures

5. (2) Noise Barriers/ Enclosures Green Wall Preparation Procedure for Green Wall & Roof (2) Noise Barriers/ Enclosures Green Roof

6. Greening System – Irrigation (2) Noise Barriers/ Enclosures Green Wall = “Dripline” System; Green Roof = Sprinkler &/or “Dripline” System • Dripline Irrigation System: - • Pressure Regulator – Constant Water Out-Flow • Anti-Backflow Check-Valves on Each Dripline Emmitter – No Backflow/ Blockage • 150mm c/c Dripline Emitters with Inlet Filter– Water More Evenly Distributed • Auto Self-Flush Filtration System – Automatic Removal of Debris/ Sediments in Filter Screen; Safe; Self-Flushing Frequency As Per Setting. • Solar Wireless Irrigation Control System: No Battery; Self-Diagnose for Valve Problems; Automatic Program Operation; Minimal Maintenance; Environmental Friendly etc. • Automated monitoring Weather Station: Automatic Control the Watering Time according to On-site Micro-Climates (Healthier for Plants) (2) Noise Barriers/ Enclosures

7. (2) Noise Barriers/ Enclosures Typical Irrigation System for Green Wall (2) Noise Barriers/ Enclosures

8. (2) Noise Barriers/ Enclosures (2) Noise Barriers/ Enclosures Wireless Controller Auto Monitoring Weather Station Solar Wireless Irrigation Control System Dripline Pipes Auto Self-Flush Filtration System Auto Irrigation Controller

9. (3) Footbridge (Yan Oi Bridge) (3) Footbridge (Yan Oi Bridge)

10. (3) Footbridge (Yan Oi Bridge) (3) Footbridge (Yan Oi Bridge)

11. Overall Design Theme & Concept (3) Footbridge (Yan Ching Bridge) (3) Footbridge (Yan Ching Bridge)

12. Overall Design Theme & Concept (2) Footbridge (Yan Ching Bridge) (3) Footbridge (Yan Ching Bridge)

13. (2) Footbridge (Siu On Bridge) (3) Footbridge (Siu On Bridge)

14. (2) Footbridge (Siu On Bridge) (3) Footbridge (Siu On Bridge)

15. (2) Footbridge (Chi Lok Bridge) (3) Footbridge (Chi Lok Bridge)

16. (3) Footbridge (Chi Lok Bridge) (3) Footbridge (Chi Lok Bridge)

17. (4) Vehicular Bridge S1 (4) Vehicular Bridge S1 Tuen Mun Road (YL/B) 2. Existing RCP & Car Parks Wong Chu Road Flyover Tuen Mun Road (KL/B) 4. Castle Peak Road 1. Wong Chu Rd Flyover 3. Resident/ Public

18. Special Design & Construction Features (4) Vehicular Bridge S1 • Monolithic Design Concept • Longest Span = 40m • Utilize the Best Structural Form – Reduce Pier, Bearings & Foundation Construction Minimize Disturbance to the Nearby Residents & Minimize Maintenance Requirements • Prestressing System: • Use of Plastic Duct as Prestressing Tendon Sheath – Eliminate Risk of Grout/ Cement Leakage; Effectively Reduce Friction Loss; & Facilitate Vacuum Grouting • Use of Vacuum Grouting – No void inside tendons Enhance the Overall Durability of the Whole Bridge Structures • Movement Joint – Low Noise MJs as used in CHEC’s Project with HyD at R8 ETY • Noise Barrier • Break down into 2 sections to create relatively lightness structure • Only 1-side green panels to avoid maintenance of green walls at height (4) Vehicular Bridge S1

19. (4) Vehicular Bridge S1 Interface Structural Assessment for WCR Flyover (4) Vehicular Bridge S1

20. (4) Vehicular Bridge S1 Interface Structural Arrangement for Bridge Deck over RCP (4) Vehicular Bridge S1 Bridge Elevation Bridge Elevation Cross-Section

21. (4) Vehicular Bridge S1 (4) Vehicular Bridge S1

22. China Harbour Engineering Company Limited (CHEC) (5) Conclusion CHEC has extensive experience in design & construction of noise barrier/ enclosure, and completed the largest noise barrier & enclosure ever built in a single contract in Hong Kong under TDD’s Contract ST86/2000. We will: - • Design & construct the Works taking into account all constraints, considerations and requirements of the Contract including Environmental Permits etc. • Minimize disturbance to the Public & environmental impacts • Secure the safety of road users/ public & all staff working on site at all times • Coordinate with all relevant authorities & UUs, and obtain necessary approvals/ permits for the design & construction of the Works. • Maintain our good relationship with the locals & all interfacing parties based on our current experience in working with the RMO, District Council &TD etc in Tuen Mun. • Identify & resolve all potential problems in the design & construction in advance for eliminating any risk to the execution of the Works. (5) Conclusion

23. Thank you China Harbour Engineering Co. Ltd. 19/F., China Harbour Building 370-374 King’s Road North Point, Hong Kong Tel: +852 2887 8118 Fax: +852 2570 2135 www.chechk.com