Justification for the Percentage of Active Works Areas and ... · 1. Active Area means the works area that would generate dust emissions during construction phase (estimated by the

Appendix 4.2

Justification for the Percentage of Active Works Areas and Dust Suppression Efficiency

Central Kowloon Route - Design & Construction

Summary of Active Construction Area Estimate

1-hour & 24-hour Annual 1-hour & 24-hour Annual 1-hour & 24-hour Annual

Tunnel assoicated works 2,084 1,612 7.1% 5.5%

CKR Landscape Deck and Slip Roads 1,600 939 3.3% 1.9%

Ventilation Building 326 208 7.4% 4.7%

Central

PortionVentilation Building 508 374 6.5% 4.8%

Tunnel assoicated Works in Ma Tau Kok Area 473 382 1.1% 0.9%

CKR Landscape Deck, Main Road and Slip Road 857 694 1.0% 0.8%

Ventilation and Adminstration Buildings 648 481 5.4% 4.0%

Other Connection Roads 479 266 1.5% 0.8%

Note:

[1] Active works areas that would generate dust emissions during construction phase are estimated by the Engineer. Details are provided in this appendix.

[2] As a conservative assessment, it is assumed that the 1-hour/24-hour and annual percentage active areas are 15% and 6% respectively.

Western

Portion

Assumed Percentage Active Area for

Construction Dust Assessment (%) [2]

15.0% 6.0%Eastern

Portion

Estimated Max. Active Area

(m2) [1]Works Area

Estimated Max. Percentage

Active Area (%)

G:\env\project\217722-70\12 Reports Deliverables\11 EIA Report\06 Final Submission\Chapter 4\Appendices\Appendix 4.2a - %Active Area_rev2.xlsx Page 1 of 10


Active Construction Area Estimate - West Portion - Tunnel assoicated works

Works Area = 29219 m229219

Construction Activities From ToDuration

(Month)

Active Area

(m2)

% Active Area to

Works Area

1001 - Site Establishment, Utility Diversion and Plant Mobilization 05-Jan-15 30-Jul-15 7 135 0.5%

1002 - Construct Temporary Jade Market 05-Jan-15 02-Jun-15 5 114 0.4%

1004 - Construct Methodone Clinic 05-Jan-15 30-Oct-15 10 103 0.4%

1005 - Decant Ya Ma Tei Jade Hawker Bazaar 03-Jun-15 30-Jun-15 1 72 0.2%

1007 - Demolish Multi-storey Carpark Building (partially) 01-Oct-15 29-Feb-16 5 72 0.2%

1008 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Temple Street

to Reclamation Street) - Foundation and pier01-Mar-16 30-Mar-16 1 153 0.5%


to Reclamation Street) - Bridge Deck01-Apr-16 01-May-16 1 71 0.2%


to Reclamation Street) - Surfacing, MJ, noise barriers01-May-16 31-May-16 1 48 0.2%

1009 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Reclamation

Street to Ferry Street) - Foundation and pier01-Apr-16 30-Apr-16 1 153 0.5%


Street to Ferry Street) - Bridge Deck01-May-16 30-Jun-16 2 71 0.2%


Street to Ferry Street) - Surfacing, MJ, noise barriers01-Jul-16 31-Jul-16 1 48 0.2%

1010 - Demolish the Existing Flyover 01-Aug-16 31-Aug-16 1 101 0.3%

1011 - Construct the Proposed GRF Flyover (the Remain Part from Temple Street to Reclamation Street) -

Foundation and pier01-Nov-16 30-Nov-16 1 153 0.5%

1011 - Construct the Proposed GRF Flyover (the Remain Part from Temple Street to Reclamation Street) - Bridge

Deck01-Dec-16 31-Jan-17 2 71 0.2%

1011 - Construct the Proposed GRF Flyover (the Remain Part from Temple Street to Reclamation Street) - Surfacing,

MJ, noise barriers01-Feb-17 27-Feb-17 1 48 0.2%

1012 - Construct the Proposed GRF Flyover (the Remain Part from Reclamation Street to Ferry Street) - Foundation

and pier01-Feb-17 27-Feb-17 1 153 0.5%

1012 - Construct the Proposed GRF Flyover (the Remain Part from Reclamation Street to Ferry Street) - Bridge Deck01-Mar-17 01-Apr-17 1 71 0.2%

1012 - Construct the Proposed GRF Flyover (the Remain Part from Reclamation Street to Ferry Street) - Surfacing,

MJ, noise barriers02-Apr-17 30-Apr-17 1 48 0.2%

1013 - Demolish Multi-storey Carpark Building (remaining part) 01-Sep-16 30-Mar-17 7 101 0.3%

1015 - Underpinning Works for YMT Police Station - Diaphragm Wall and Transfer Beams 01-Mar-16 30-Jun-16 4 166 0.6%

1015 - Underpinning Works for YMT Police Station - Underpinning Excavation 01-Jul-16 31-Jul-16 1 83 0.3%

1016 - Demolish Special Clinic Extension Building 01-Sep-16 27-Feb-17 6 127 0.4%

1017 - Construct Western Access Shaft - Excavation of Diaphragm Walls 05-Jan-15 31-Jan-15 1 140 0.5%

1017 - Construct Western Access Shaft - Concreting of Diaphragm Wall 01-Feb-15 27-Feb-15 1 138 0.5%

(total area of works area ID W-02 to W-07, and W-26 to W-32 in air quality assessment)



(Month)

Active Area

(m2)

% Active Area to

Works Area

1017 - Construct Western Access Shaft - Soil Excavation of Access Shaft (covered by traffic deck with opening) 01-Mar-15 31-May-15 3 158 0.5%

1017 - Construct Western Access Shaft - Rock Excavation of Access Shaft (covered by traffic deck with opening) 01-Jun-15 31-Jul-15 2 134 0.5%

1017 - Construct Western Access Shaft - Cast Bottom Slab (covered by traffic deck with opening) 01-Aug-15 30-Sep-15 2 128 0.4%

1019 - Construct Middle Dwall and Traffic Deck (cross road sections) - Diaphragm Walls 01-Jan-16 27-Feb-16 2 199 0.7%

1019 - Construct Middle Dwall and Traffic Deck (cross road sections) - Temporary Traffic Deck 01-Mar-16 31-Mar-16 1 131 0.4%

1020 - Diversion of Ferry Street Junction 01-Apr-16 30-Jun-16 3 186 0.6%

1021 - Construct Southern Dwall & Dwall Crossing Ferry Street - Piling for King Post 01-Apr-16 30-Apr-16 1 185 0.6%

1021 Construct Southern Dwall & Dwall Crossing Ferry Street - Grouting for King Post 01-May-16 31-May-16 1 108 0.4%

1021 - Construct Southern Dwall & Dwall Crossing Ferry Street - Excavation for Diaphragm Walls 01-Jun-16 31-Aug-16 3 234 0.8%

1021 - Construct Southern Dwall & Dwall Crossing Ferry Street - Concreting for Diaphragm Walls 01-Sep-16 30-Sep-16 1 62 0.2%

1021 - Construct Southern Dwall & Dwall Crossing Ferry Street - Temporary Traffic Deck 01-Oct-16 31-Oct-16 1 196 0.7%

1022 - Construct Southern Dwall and Traffic Deck (cross road sections) - Diaphragm Walls 01-Nov-16 31-Dec-16 2 199 0.7%

1022 - Construct Southern Dwall and Traffic Deck (cross road sections) - Temporary Traffic Deck 01-Jan-17 31-Jan-17 1 131 0.4%

1023 - Construct Northern Dwall and Traffic Deck - Piling for King Post 01-Feb-17 27-Feb-17 1 167 0.6%

1023 - Construct Northern Dwall and Traffic Deck - Grouting for King Post 01-Mar-17 31-Mar-17 1 101 0.3%

1023 - Construct Northern Dwall and Traffic Deck - Excavation for Diaphragm Walls 01-Mar-17 31-Mar-17 1 222 0.8%

1023 - Construct Northern Dwall and Traffic Deck - Concreting for Diaphragm Walls 01-Apr-17 30-Apr-17 1 70 0.2%

1023 - Construct Northern Dwall and Traffic Deck - Temporary Traffic Deck 01-May-17 31-May-17 1 210 0.7%

1024 - Construct Northern Dwall and Traffic Deck (cross road sections) - Excavation for Diaphragm Walls 01-Jun-17 30-Jun-17 1 156 0.5%

1024 - Construct Northern Dwall and Traffic Deck (cross road sections) - Concreting for Diaphragm Walls 01-Jul-17 31-Jul-17 1 42 0.1%

1024 - Construct Northern Dwall and Traffic Deck (cross road sections) - Temporary Traffic Deck 01-Aug-17 31-Aug-17 1 131 0.4%

1025 - Reinstate the affected roads and footpaths 01-Sep-17 31-Oct-17 2 208 0.7%

1026 - Excavation of Tunnel Tubes (under cover of traffic deck) 01-Feb-17 30-Sep-18 20 284 1.0%

1027 - Removal of Excavated Material through West End Portal 01-Feb-17 30-Sep-18 20 168 0.6%

1028 - Piling Works for Cut and Cover Tunnel (under cover of traffic deck) 01-May-17 31-Dec-18 20 256 0.9%

1029 - Underpinning of Existing Bridges (under cover of traffic deck) 01-Jul-17 31-Dec-17 6 264 0.9%

1030 - Construction of the Cut and Cover Tunnel (under cover of traffic deck) 01-Apr-17 31-Jul-19 28 452 1.5%

1030 - Construction of the Cut and Cover Tunnel (under cover of traffic deck) 01-Apr-17 31-Jul-19 28 452 1.5%

1031 - Backfilling on Top of Cut and Cover Tunnel (under cover of traffic deck) 01-Aug-19 30-Nov-19 4 129 0.4%

1032 - Construct Ferry Street Subway 01-Aug-18 30-Nov-18 4 86 0.3%

1033 - Demolish the Existing Ferry Street Subway 01-Dec-18 28-Feb-19 3 65 0.2%

1034 - Construct Noise Barrier on Ferry Flyover and along Ting Ping Street - Piling, Pile Cap and Upstand Beam 01-Mar-19 31-May-19 3 211 0.7%

1034 - Construct Noise Barrier on Ferry Flyover and along Ting Ping Street - Superstructure 01-Jun-19 30-Nov-19 6 92 0.3%

1035 - Road works for Section between Ferry Street and Nathan Road 01-Dec-19 31-May-20 6 244 0.8%

1036 - Diversion of Existing Box Culverts in adjacent to Hoi Wang Road 05-Mar-15 31-Aug-15 6 220 0.8%

1037 - Temporary Shifting of Hoi Wang Road toward West 01-Sep-15 30-Sep-15 1 140 0.5%

Note:

1. Active Area means the works area that would generate dust emissions during construction phase (estimated by the Engineer).

2. Estimations provided above are for the purpose of assessment only. Actual figures would be defined during detailed design stage.



Active Construction Area Estimate - West Portion - CKR Landscape Deck and Slip Roads

Works Area = 48247 m248247


(Month)

Active Area

(m2)

% Active Area to

Works Area

1018 - Construct Middle Dwall and Traffic Deck - Piling for King Post 01-Aug-15 30-Sep-15 2 109 0.2%

1018 - Construct Middle Dwall and Traffic Deck - Diaphragm Walls 01-Aug-15 30-Nov-15 4 110 0.2%

1018 - Construct Middle Dwall and Traffic Deck - Temporary Traffic Deck 01-Dec-15 31-Dec-15 1 65 0.1%

1018 - Construct Middle Dwall and Traffic Deck - Piling for King Post 01-Jul-15 31-Dec-15 6 109 0.2%

1018 - Construct Middle Dwall and Traffic Deck - Diaphragm Walls 01-Jul-15 31-Dec-15 6 110 0.2%

1018 - Construct Middle Dwall and Traffic Deck - Temporary Traffic Deck 01-Jul-15 31-Dec-15 6 65 0.1%

1038 - Construct Depressed Road Structure - Site Formation, Levelling & Excavation Works 01-Feb-15 30-Apr-15 3 162 0.3%

1038 - Construct Depressed Road Structure - Construction & Paving Works 01-May-15 27-Feb-16 10 241 0.5%

1039 - Construct Landscape Deck 01-Jan-16 31-Dec-16 12 278 0.6%

1040 - Filling embankment for the Link Road A, D, E, F and Hoi Wang Road 01-Jan-17 31-May-17 5 348 0.7%

1041 - Construct Retaining Wall RWW1, 2, 3 & 4 01-Jan-17 31-May-17 5 535 1.1%

1042 - Construct Noise Barrier and Diversion of Hoi Wang Road 01-Jun-17 31-Oct-17 5 145 0.3%

1043 Construct Ventilation Duct 01-Jan-16 31-Aug-16 8 211 0.4%

1045 - Realign Lin Cheung Road 01-Sep-15 30-Jun-16 10 164 0.3%

1046 - Construct Bridge B2 and C2 01-Mar-16 30-Sep-16 7 237 0.5%

1047 - Construct Bridge D and E 01-Jul-16 31-Jan-17 7 480 1.0%

1048 - Construct Bridge F and G 01-Dec-16 31-Jul-17 8 237 0.5%

1049 - Demolish Temporary Bridge D2 and T 01-Oct-17 31-Dec-18 15 91 0.2%

1050 - Construct Bridge B and C 01-Jan-18 31-Jul-18 7 237 0.5%

1053 - Road Works for Connection Roads on West Side of Ferry Street 01-Aug-18 30-Nov-18 4 409 0.8%

1054 - Landscaping Works 01-Dec-18 30-Sep-19 10 146 0.3%

Note:



(total area of works area ID W-01, W-08 to W-23, W-25 and W-33 to W-36 in air quality assessment)



Active Construction Area Estimate - West Portion - Ventilation Building

Works Area = 4378 m24378


(Month)

Active Area

(m2)

% Active Area to

Works Area

1044 - Construct Western Ventilation Building - Foundation works for Vent Building 01-Jun-15 31-Dec-15 7 326 7.4%

1044 Construct Western Ventilation Building - Construction of Superstructure for Ventilation Buildings 01-Jan-16 31-May-17 17 208 4.7%

Note:



(total area of works area ID W-24 in air quality assessment)



Active Construction Area Estimate - Central Portion - Ventilation Building

Works Area = 7804 m27804


(Month)

Active Area

(m2)

% Active Area to

Works Area

2201 - Bored Piling Works 05-Jan-15 29-Mar-15 3 298 3.8%

2201 - Diaphragm Walls 05-Apr-15 29-Aug-15 5 314 4.0%

2208 - Excavation of Access Shaft 01-Sep-15 28-Apr-16 8 508 6.5%

2208 - Foundation Works for Ventillation Building 01-Aug-18 30-Nov-18 4 281 3.6%

2208 - Construction of Ventillation Buildings 01-Dec-18 01-Jul-19 7 131 1.7%

Note:



(total area of works area ID M-01 to M-04 in air quality assessment)



Active Construction Area Estimate - East Portion - Tunnel assoicated Works in Ma Tau Kok Area

Works Area = 42390 m242390


(Month)

Active Area

(m2)

% Active Area to

Works Area

3101 - Diaphragm Walls 05-Jan-15 29-May-15 5 166 0.4%

3102 - Excavation and Structures 01-Jun-15 30-Sep-15 4 203 0.5%

3103 - Diaphragm Walls 02-Oct-15 29-Apr-16 7 166 0.4%

3104 - Excavation and Structures 02-May-16 31-Oct-16 6 203 0.5%

3201 - Dredging 05-Jan-15 30-Aug-15 8 0 0.0%

3202 - Temporary Reclamation 01-Apr-15 30-Oct-15 7 203 0.5%

3203 - Cast Diaphragm Wall Inside Temporary Seawall 02-Nov-15 30-Dec-15 2 173 0.4%

3203 - Staged Excavation Adding Struts with Depth 02-Jan-16 30-Jun-16 6 256 0.6%

3204 - Tunnel Box 01-Jul-16 30-Nov-16 5 198 0.5%

3205 - Backfill and Restoration 01-Dec-16 30-Mar-17 4 174 0.4%

3206 - Demolish Ma Tau Kok Public Pier 05-Jan-15 30-Mar-15 3 88 0.2%

3206 - Staged Handover of Temporary PTI 05-Apr-15 31-Jul-15 4 68 0.2%

3207 - Dredging 01-Dec-16 31-Mar-17 4 0 0.0%

3208 - Temporary Reclamation 03-Apr-17 31-Oct-17 7 203 0.5%

3209 - Cast Diaphragm Wall Inside Temporary Seawall 01-Nov-17 31-Dec-17 2 173 0.4%

3209 - Staged Excavation Adding Struts with Depth 01-Jan-18 29-Jun-18 6 256 0.6%

3210 - Tunnel Box 02-Jul-18 31-Dec-18 6 198 0.5%

3211 - Backfill & Restoration 01-Jan-19 30-Apr-19 4 174 0.4%

3212 - Final Seabed Restoration and Interfacing 01-May-19 30-Aug-19 4 0 0.0%

Note:



(total area of works area ID E-34 to E-40 in air quality assessment)



Active Construction Area Estimate - East Portion - CKR Landscape Deck, Main Road and Slip Road

Works Area = 81864 m281864


(Month)

Active Area

(m2)

% Active Area to

Works Area

3301 - Diaphragm Walls 05-Jan-15 31-Dec-15 12 166 0.2%

3302 - Site Formation, Levelling & Excavation Works 05-Jan-15 30-Jul-15 7 212 0.3%

3302 - Construction & Paving Works 01-Aug-15 04-Jul-16 11 239 0.3%

3303 - Site Formation, Levelling & Excavation Works 01-Jan-16 30-Jun-16 6 212 0.3%

3303 - Construction & Paving Works 01-Jul-16 28-Feb-17 8 239 0.3%

3401 - Site Formation, Levelling & Excavation Works 05-Jan-15 27-Feb-15 2 212 0.3%

3401 - Construction & Paving Works 01-Mar-15 30-Apr-15 2 239 0.3%

3401 - Fitting Works 01-May-15 29-May-15 1 130 0.2%

3402 - Site Formation, Levelling & Excavation Works 05-Jan-15 27-Feb-15 2 212 0.3%

3402 - Construction & Paving Works 01-Mar-15 02-May-15 2 239 0.3%

3402 - Fitting Works 03-May-15 02-Jun-15 1 130 0.2%

3403 - Site Formation, Levelling & Excavation Works 01-Jun-15 31-Aug-15 3 212 0.3%

3403 - Construction & Paving Works 01-Sep-15 31-Jan-16 5 239 0.3%

3403 - Fitting Works 01-Feb-16 26-Feb-16 1 130 0.2%

3404 - Site Formation, Levelling & Excavation Works 29-Feb-16 30-Apr-16 2 212 0.3%

3404 - Construction & Paving Works 02-May-16 31-Oct-16 6 239 0.3%

3404 - Fitting Works 01-Nov-16 29-Nov-16 1 130 0.2%

Note:



(total area of works area ID E-01 to E-12, E-23 and E-24 in air quality assessment)



Active Construction Area Estimate - East Portion - Ventilation and Adminstration Buildings

Works Area = 11985 m211985


(Month)

Active Area

(m2)

% Active Area to

Works Area

3405 - Site Formation, Levelling & Excavation Works 30-Nov-16 30-Jan-17 2 424 3.5%

3405 - Construction & Paving Works 01-Feb-17 30-Jul-17 6 479 4.0%

3405 - Fitting Works 01-Aug-17 30-Aug-17 1 259 2.2%

3406 - Foundation Works for Administration and Ventilation Building in Kai Tak 01-Jun-15 30-Mar-16 10 262 2.2%

3406 - Construction of Administration and Ventilation Buildings 01-Apr-16 30-Nov-17 20 169 1.4%

3406 - Construct Ventilation Duct 01-Dec-17 28-Feb-18 3 356 3.0%

Note:



(total area of works area ID E-13 to E-19 and E-33 in air quality assessment)



Active Construction Area Estimate - East Portion - Other Connection Roads

Works Area = 31284 m231284


(Month)

Active Area

(m2)

% Active Area to

Works Area



3407 - Fitting Works 31-Jan-16 27-Feb-16 1 130 0.4%



3408 - Fitting Works 31-Jan-16 27-Feb-16 1 130 0.4%

Note:



(total area of works area ID E-19, E-22 and E-25 to E-32 in air quality assessment)



Preliminary Construction Programme for West Portion - Tunnel assoicated Works

Activities

Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec

Tunnel assoicated works

1001 - Site Establishment, Utility Diversion and Plant Mobilization 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5%

1002 - Construct Temporary Jade Market 0.4% 0.4% 0.4% 0.4% 0.4%

1004 - Construct Methodone Clinic 0.4% 0.4% 0.4% 0.4% 0.4% 0.4% 0.4% 0.4% 0.4% 0.4%

1005 - Decant Ya Ma Tei Jade Hawker Bazaar 0.2%

1007 - Demolish Multi-storey Carpark Building (partially) 0.2% 0.2% 0.2% 0.2% 0.2%

1008 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Temple Street to Reclamation Street) - Foundation and pier 0.5%

1008 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Temple Street to Reclamation Street) - Bridge Deck 0.2%

1008 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Temple Street to Reclamation Street) - Surfacing, MJ, noise barriers 0.2%

1009 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Reclamation Street to Ferry Street) - Foundation and pier 0.5%

1009 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Reclamation Street to Ferry Street) - Bridge Deck 0.2% 0.2%

1009 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Reclamation Street to Ferry Street) - Surfacing, MJ, noise barriers 0.2%

1010 - Demolish the Existing Flyover 0.3%

1011 - Construct the Proposed GRF Flyover (the Remain Part from Temple Street to Reclamation Street) - Foundation and pier 0.5%

1011 - Construct the Proposed GRF Flyover (the Remain Part from Temple Street to Reclamation Street) - Bridge Deck 0.2% 0.2%

1011 - Construct the Proposed GRF Flyover (the Remain Part from Temple Street to Reclamation Street) - Surfacing, MJ, noise barriers 0.2%

1012 - Construct the Proposed GRF Flyover (the Remain Part from Reclamation Street to Ferry Street) - Foundation and pier 0.5%

1012 - Construct the Proposed GRF Flyover (the Remain Part from Reclamation Street to Ferry Street) - Bridge Deck 0.2%

1012 - Construct the Proposed GRF Flyover (the Remain Part from Reclamation Street to Ferry Street) - Surfacing, MJ, noise barriers 0.2%

1013 - Demolish Multi-storey Carpark Building (remaining part) 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3%

1015 - Underpinning Works for YMT Police Station - Diaphragm Wall and Transfer Beams 0.6% 0.6% 0.6% 0.6%

1015 - Underpinning Works for YMT Police Station - Underpinning Excavation 0.3%

1016 - Demolish Special Clinic Extension Building 0.4% 0.4% 0.4% 0.4% 0.4% 0.4%

1017 - Construct Western Access Shaft - Excavation of Diaphragm Walls 0.5%

1017 - Construct Western Access Shaft - Concreting of Diaphragm Wall 0.5%

1017 - Construct Western Access Shaft - Soil Excavation of Access Shaft (covered by traffic deck with opening) 0.5% 0.5% 0.5%

1017 - Construct Western Access Shaft - Rock Excavation of Access Shaft (covered by traffic deck with opening) 0.5% 0.5%

1017 - Construct Western Access Shaft - Cast Bottom Slab (covered by traffic deck with opening) 0.4% 0.4%

1019 - Construct Middle Dwall and Traffic Deck (cross road sections) - Diaphragm Walls 0.7% 0.7%

1019 - Construct Middle Dwall and Traffic Deck (cross road sections) - Temporary Traffic Deck 0.4%

1020 - Diversion of Ferry Street Junction 0.6% 0.6% 0.6%

1021 - Construct Southern Dwall & Dwall Crossing Ferry Street - Piling for King Post 0.6%

1021 Construct Southern Dwall & Dwall Crossing Ferry Street - Grouting for King Post 0.4%

1021 - Construct Southern Dwall & Dwall Crossing Ferry Street - Excavation for Diaphragm Walls 0.8% 0.8% 0.8%

1021 - Construct Southern Dwall & Dwall Crossing Ferry Street - Concreting for Diaphragm Walls 0.2%

1021 - Construct Southern Dwall & Dwall Crossing Ferry Street - Temporary Traffic Deck 0.7%

1022 - Construct Southern Dwall and Traffic Deck (cross road sections) - Diaphragm Walls 0.7% 0.7%

1022 - Construct Southern Dwall and Traffic Deck (cross road sections) - Temporary Traffic Deck 0.4%

1023 - Construct Northern Dwall and Traffic Deck - Piling for King Post 0.6%

1023 - Construct Northern Dwall and Traffic Deck - Grouting for King Post 0.3%

1023 - Construct Northern Dwall and Traffic Deck - Excavation for Diaphragm Walls 0.8%

1023 - Construct Northern Dwall and Traffic Deck - Concreting for Diaphragm Walls 0.2%

1023 - Construct Northern Dwall and Traffic Deck - Temporary Traffic Deck 0.7%

1024 - Construct Northern Dwall and Traffic Deck (cross road sections) - Excavation for Diaphragm Walls 0.5%

1024 - Construct Northern Dwall and Traffic Deck (cross road sections) - Concreting for Diaphragm Walls 0.1%

1024 - Construct Northern Dwall and Traffic Deck (cross road sections) - Temporary Traffic Deck 0.4%

1025 - Reinstate the affected roads and footpaths 0.7% 0.7%

1026 - Excavation of Tunnel Tubes (under cover of traffic deck) 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0%

1027 - Removal of Excavated Material through West End Portal 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6%

1028 - Piling Works for Cut and Cover Tunnel (under cover of traffic deck) 0.9% 0.9% 0.9% 0.9% 0.9% 0.9% 0.9% 0.9%

1029 - Underpinning of Existing Bridges (under cover of traffic deck) 0.9% 0.9% 0.9% 0.9% 0.9% 0.9%

1030 - Construction of the Cut and Cover Tunnel (under cover of traffic deck) 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5%

1030 - Construction of the Cut and Cover Tunnel (under cover of traffic deck) 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5%

1031 - Backfilling on Top of Cut and Cover Tunnel (under cover of traffic deck)

1032 - Construct Ferry Street Subway

2015 2016 2017

Activities


2015 2016 2017

1033 - Demolish the Existing Ferry Street Subway

1034 - Construct Noise Barrier on Ferry Flyover and along Ting Ping Street - Piling, Pile Cap and Upstand Beam

1034 - Construct Noise Barrier on Ferry Flyover and along Ting Ping Street - Superstructure

1035 - Road works for Section between Ferry Street and Nathan Road

1036 - Diversion of Existing Box Culverts in adjacent to Hoi Wang Road 0.8% 0.8% 0.8% 0.8% 0.8% 0.8%

1037 - Temporary Shifting of Hoi Wang Road toward West 0.5%

Combined 1-hour & 24-hour Percentage Active Area 1.7% 1.7% 2.5% 2.5% 2.5% 2.3% 2.0% 1.5% 1.3% 0.6% 0.2% 0.2% 0.9% 0.9% 1.5% 2.6% 2.0% 2.3% 1.3% 1.1% 1.0% 1.5% 2.0% 1.7% 1.5% 3.6% 3.2% 5.0% 6.2% 6.1% 6.6% 6.9% 7.1% 7.1% 6.4% 6.4%

Combined Annual Percentage Actice Area 1.6% 1.6% 5.5%

Max. 1-hour & 24-hour Percentage Active Area

Max. Annual Percentage Actice Area

Preliminary Construction Programme for West Portion - CKR Landscape Deck and Slip Road

Activities


CKR Landscape Deck and Slip Road

1018 - Construct Middle Dwall and Traffic Deck - Piling for King Post 0.2% 0.2%

1018 - Construct Middle Dwall and Traffic Deck - Diaphragm Walls 0.2% 0.2% 0.2% 0.2%

1018 - Construct Middle Dwall and Traffic Deck - Temporary Traffic Deck 0.1%

1018 - Construct Middle Dwall and Traffic Deck - Piling for King Post 0.2% 0.2% 0.2% 0.2% 0.2% 0.2%

1018 - Construct Middle Dwall and Traffic Deck - Diaphragm Walls 0.2% 0.2% 0.2% 0.2% 0.2% 0.2%

1018 - Construct Middle Dwall and Traffic Deck - Temporary Traffic Deck 0.1% 0.1% 0.1% 0.1% 0.1% 0.1%

1038 - Construct Depressed Road Structure - Site Formation, Levelling & Excavation Works 0.3% 0.3% 0.3%

1038 - Construct Depressed Road Structure - Construction & Paving Works 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5%

1039 - Construct Landscape Deck 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6%

1040 - Filling embankment for the Link Road A, D, E, F and Hoi Wang Road 0.7% 0.7% 0.7% 0.7% 0.7%

1041 - Construct Retaining Wall RWW1, 2, 3 & 4 1.1% 1.1% 1.1% 1.1% 1.1%

1042 - Construct Noise Barrier and Diversion of Hoi Wang Road 0.3% 0.3% 0.3% 0.3% 0.3%

1043 Construct Ventilation Duct 0.4% 0.4% 0.4% 0.4% 0.4% 0.4% 0.4% 0.4%

1045 - Realign Lin Cheung Road 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3%

1046 - Construct Bridge B2 and C2 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5%

1047 - Construct Bridge D and E 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0%

1048 - Construct Bridge F and G 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5%

1049 - Demolish Temporary Bridge D2 and T 0.2% 0.2% 0.2%

1050 - Construct Bridge B and C

1053 - Road Works for Connection Roads on West Side of Ferry Street

1054 - Landscaping Works





Preliminary Construction Programme for West Portion - Ventilation Building

Activities


Ventilation Building

1044 - Construct Western Ventilation Building - Foundation works for Vent Building 7.4% 7.4% 7.4% 7.4% 7.4% 7.4% 7.4%

1044 Construct Western Ventilation Building - Construction of Superstructure for Ventilation Buildings 4.7% 4.7% 4.7% 4.7% 4.7% 4.7% 4.7% 4.7% 4.7% 4.7% 4.7% 4.7% 4.7% 4.7% 4.7% 4.7% 4.7%





Active Area (m2) in West Portion - Overall

Works Area


Tunnel assoicated Works 492 490 730 730 730 664 592 451 371 175 72 72 271 271 450 761 579 658 366 335 290 424 580 497 430 1048 948 1474 1823 1769 1918 2008 2084 2084 1877 1877

CKR Landscape Deck and Slip Road 0 162 162 162 241 241 526 745 909 800 800 756 894 894 890 890 890 890 1206 1206 995 758 758 995 1600 1120 1120 1120 1120 382 382 145 145 236 91 91

Ventilation Building 0 0 0 0 0 326 326 326 326 326 326 326 208 208 208 208 208 208 208 208 208 208 208 208 208 208 208 208 208 0 0 0 0 0 0 0

Monthly 1-hour & 24-hour Active Area in Western Portion 492 652 892 892 971 1231 1443 1521 1606 1301 1198 1153 1373 1373 1549 1860 1678 1756 1779 1749 1493 1390 1545 1700 2238 2376 2276 2802 3151 2151 2300 2153 2229 2320 1968 1968

Annual Actice Area in Western Portion 1113 1604 2328

Max. 1-hour & 24-hour Active Area in Western Portion = m2

Max. Annual Active Area in Western Portion = m2

2015

7.1%

5.5%

2015 2016 2017

4.7%

3.3%

1.9%

7.4%

2015 2016 2017

2016 2017

3151

2328


Preliminary Construction Programme for West Portion - Tunnel assoicated Works

Activities

Tunnel assoicated works

1001 - Site Establishment, Utility Diversion and Plant Mobilization

1002 - Construct Temporary Jade Market

1004 - Construct Methodone Clinic

1005 - Decant Ya Ma Tei Jade Hawker Bazaar

1007 - Demolish Multi-storey Carpark Building (partially)

1008 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Temple Street to Reclamation Street) - Foundation and pier

1008 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Temple Street to Reclamation Street) - Bridge Deck

1008 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Temple Street to Reclamation Street) - Surfacing, MJ, noise barriers

1009 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Reclamation Street to Ferry Street) - Foundation and pier

1009 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Reclamation Street to Ferry Street) - Bridge Deck

1009 - Construct Proposed GRF Flyover (one lane) on Northern Side and the Temporary Deck (From Reclamation Street to Ferry Street) - Surfacing, MJ, noise barriers

1010 - Demolish the Existing Flyover

1011 - Construct the Proposed GRF Flyover (the Remain Part from Temple Street to Reclamation Street) - Foundation and pier

1011 - Construct the Proposed GRF Flyover (the Remain Part from Temple Street to Reclamation Street) - Bridge Deck

1011 - Construct the Proposed GRF Flyover (the Remain Part from Temple Street to Reclamation Street) - Surfacing, MJ, noise barriers

1012 - Construct the Proposed GRF Flyover (the Remain Part from Reclamation Street to Ferry Street) - Foundation and pier

1012 - Construct the Proposed GRF Flyover (the Remain Part from Reclamation Street to Ferry Street) - Bridge Deck

1012 - Construct the Proposed GRF Flyover (the Remain Part from Reclamation Street to Ferry Street) - Surfacing, MJ, noise barriers

1013 - Demolish Multi-storey Carpark Building (remaining part)

1015 - Underpinning Works for YMT Police Station - Diaphragm Wall and Transfer Beams

1015 - Underpinning Works for YMT Police Station - Underpinning Excavation

1016 - Demolish Special Clinic Extension Building

1017 - Construct Western Access Shaft - Excavation of Diaphragm Walls

1017 - Construct Western Access Shaft - Concreting of Diaphragm Wall

1017 - Construct Western Access Shaft - Soil Excavation of Access Shaft (covered by traffic deck with opening)

1017 - Construct Western Access Shaft - Rock Excavation of Access Shaft (covered by traffic deck with opening)

1017 - Construct Western Access Shaft - Cast Bottom Slab (covered by traffic deck with opening)

1019 - Construct Middle Dwall and Traffic Deck (cross road sections) - Diaphragm Walls

1019 - Construct Middle Dwall and Traffic Deck (cross road sections) - Temporary Traffic Deck

1020 - Diversion of Ferry Street Junction

1021 - Construct Southern Dwall & Dwall Crossing Ferry Street - Piling for King Post

1021 Construct Southern Dwall & Dwall Crossing Ferry Street - Grouting for King Post

1021 - Construct Southern Dwall & Dwall Crossing Ferry Street - Excavation for Diaphragm Walls

1021 - Construct Southern Dwall & Dwall Crossing Ferry Street - Concreting for Diaphragm Walls

1021 - Construct Southern Dwall & Dwall Crossing Ferry Street - Temporary Traffic Deck

1022 - Construct Southern Dwall and Traffic Deck (cross road sections) - Diaphragm Walls

1022 - Construct Southern Dwall and Traffic Deck (cross road sections) - Temporary Traffic Deck

1023 - Construct Northern Dwall and Traffic Deck - Piling for King Post

1023 - Construct Northern Dwall and Traffic Deck - Grouting for King Post

1023 - Construct Northern Dwall and Traffic Deck - Excavation for Diaphragm Walls

1023 - Construct Northern Dwall and Traffic Deck - Concreting for Diaphragm Walls

1023 - Construct Northern Dwall and Traffic Deck - Temporary Traffic Deck

1024 - Construct Northern Dwall and Traffic Deck (cross road sections) - Excavation for Diaphragm Walls

1024 - Construct Northern Dwall and Traffic Deck (cross road sections) - Concreting for Diaphragm Walls

1024 - Construct Northern Dwall and Traffic Deck (cross road sections) - Temporary Traffic Deck

1025 - Reinstate the affected roads and footpaths

1026 - Excavation of Tunnel Tubes (under cover of traffic deck)

1027 - Removal of Excavated Material through West End Portal

1028 - Piling Works for Cut and Cover Tunnel (under cover of traffic deck)

1029 - Underpinning of Existing Bridges (under cover of traffic deck)

1030 - Construction of the Cut and Cover Tunnel (under cover of traffic deck)

1030 - Construction of the Cut and Cover Tunnel (under cover of traffic deck)

1031 - Backfilling on Top of Cut and Cover Tunnel (under cover of traffic deck)

1032 - Construct Ferry Street Subway


1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0%

0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6%

0.9% 0.9% 0.9% 0.9% 0.9% 0.9% 0.9% 0.9% 0.9% 0.9% 0.9% 0.9%

1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5%

1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5% 1.5%

0.4% 0.4% 0.4% 0.4%

0.3% 0.3% 0.3% 0.3%

2019 20202018

Activities

1033 - Demolish the Existing Ferry Street Subway

1034 - Construct Noise Barrier on Ferry Flyover and along Ting Ping Street - Piling, Pile Cap and Upstand Beam

1034 - Construct Noise Barrier on Ferry Flyover and along Ting Ping Street - Superstructure

1035 - Road works for Section between Ferry Street and Nathan Road

1036 - Diversion of Existing Box Culverts in adjacent to Hoi Wang Road

1037 - Temporary Shifting of Hoi Wang Road toward West

Combined 1-hour & 24-hour Percentage Active Area

Combined Annual Percentage Actice Area



Preliminary Construction Programme for West Portion - CKR Landscape Deck and Slip Road

Activities


1018 - Construct Middle Dwall and Traffic Deck - Piling for King Post

1018 - Construct Middle Dwall and Traffic Deck - Diaphragm Walls

1018 - Construct Middle Dwall and Traffic Deck - Temporary Traffic Deck

1018 - Construct Middle Dwall and Traffic Deck - Piling for King Post

1018 - Construct Middle Dwall and Traffic Deck - Diaphragm Walls

1018 - Construct Middle Dwall and Traffic Deck - Temporary Traffic Deck

1038 - Construct Depressed Road Structure - Site Formation, Levelling & Excavation Works

1038 - Construct Depressed Road Structure - Construction & Paving Works

1039 - Construct Landscape Deck

1040 - Filling embankment for the Link Road A, D, E, F and Hoi Wang Road

1041 - Construct Retaining Wall RWW1, 2, 3 & 4

1042 - Construct Noise Barrier and Diversion of Hoi Wang Road

1043 Construct Ventilation Duct

1045 - Realign Lin Cheung Road

1046 - Construct Bridge B2 and C2

1047 - Construct Bridge D and E

1048 - Construct Bridge F and G

1049 - Demolish Temporary Bridge D2 and T

1050 - Construct Bridge B and C

1053 - Road Works for Connection Roads on West Side of Ferry Street

1054 - Landscaping Works





Preliminary Construction Programme for West Portion - Ventilation Building

Activities


1044 - Construct Western Ventilation Building - Foundation works for Vent Building

1044 Construct Western Ventilation Building - Construction of Superstructure for Ventilation Buildings






Works Area

Tunnel assoicated Works



Monthly 1-hour & 24-hour Active Area in Western Portion

Annual Actice Area in Western Portion

Max. 1-hour & 24-hour Active Area in Western Portion =

Max. Annual Active Area in Western Portion =


2019 20202018

0.2% 0.2% 0.2%

0.7% 0.7% 0.7%

0.3% 0.3% 0.3% 0.3% 0.3% 0.3%

0.8% 0.8% 0.8% 0.8% 0.8% 0.8%

5.5% 5.5% 5.5% 5.5% 5.5% 5.5% 5.5% 5.8% 5.8% 4.3% 4.3% 4.2% 3.3% 3.3% 3.8% 3.8% 3.8% 3.4% 3.4% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%

5.2% 2.4% 0.3%


0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2%

0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5%

0.8% 0.8% 0.8% 0.8%

0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3%

0.7% 0.7% 0.7% 0.7% 0.7% 0.7% 0.7% 1.0% 1.0% 1.0% 1.0% 0.5% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%

0.8% 0.2% 0.0%


0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%

0.0% 0.0% 0.0%


1612 1612 1612 1612 1612 1612 1612 1698 1698 1246 1246 1225 968 968 1115 1115 1115 996 996 221 221 221 221 244 244 244 244 244 244 0 0 0 0 0 0 0

328 328 328 328 328 328 328 500 500 500 500 237 146 146 146 146 146 146 146 146 146 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1941 1941 1941 1941 1941 1941 1941 2198 2198 1745 1745 1461 1114 1114 1260 1260 1260 1141 1141 367 367 221 221 244 244 244 244 244 244 0 0 0 0 0 0 0

1911 809 102

2019 2020

2018 2019

2019

2020

20202018

2018


Preliminary Construction Programme for Central Portion - Ventilation Building

Activities

Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec


2201 - Bored Piling Works 3.8% 3.8% 3.8%

2201 - Diaphragm Walls 4.0% 4.0% 4.0% 4.0% 4.0%

2208 - Excavation of Access Shaft 6.5% 6.5% 6.5% 6.5% 6.5% 6.5% 6.5% 6.5%

2208 - Foundation Works for Ventillation Building 3.6% 3.6% 3.6% 3.6%

2208 - Construction of Ventillation Buildings 1.7% 1.7% 1.7% 1.7% 1.7% 1.7% 1.7%

Combined 1-hour & 24-hour Percentage Active Area 3.8% 3.8% 3.8% 4.0% 4.0% 4.0% 4.0% 4.0% 6.5% 6.5% 6.5% 6.5% 6.5% 6.5% 6.5% 6.5% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 3.6% 3.6% 3.6% 3.6% 1.7% 1.7% 1.7% 1.7% 1.7% 1.7% 1.7% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%

Combined Annual Percentage Actice Area 4.8% 2.2% 0.0% 1.3% 0.8%



Active Area (m2) in Central Portion - Overall

Works Area


Ventilation Building 298 298 298 314 314 314 314 314 508 508 508 508 508 508 508 508 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 281 281 281 281 131 131 131 131 131 131 131 0 0 0 0 0 0

Monthly 1-hour & 24-hour Active Area in Central Portion 298 298 298 314 314 314 314 314 508 508 508 508 508 508 508 508 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 281 281 281 281 131 131 131 131 131 131 131 0 0 0 0 0 0

Annual Actice Area in Central Portion 374 169 0 105 66

Max. 1-hour & 24-hour Active Area in Central Portion = m2

Max. Annual Active Area in Central Portion = m2

508

374

2019

6.5%

4.8%

2015 2016 2017 2018

2015 2016 2017 2018 2019


Preliminary Construction Programme for East Portion - Tunnel assoicated Works in Ma Tau Kok Area

Activities


Tunnel assoicated Works in Ma Tau Kok Area

3101 - Diaphragm Walls 0.4% 0.4% 0.4% 0.4% 0.4%

3102 - Excavation and Structures 0.5% 0.5% 0.5% 0.5%

3103 - Diaphragm Walls 0.4% 0.4% 0.4% 0.4% 0.4% 0.4% 0.4%

3104 - Excavation and Structures 0.5% 0.5% 0.5% 0.5% 0.5% 0.5%

3201 - Dredging 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%

3202 - Temporary Reclamation 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5%

3203 - Cast Diaphragm Wall Inside Temporary Seawall 0.4% 0.4%

3203 - Staged Excavation Adding Struts with Depth 0.6% 0.6% 0.6% 0.6% 0.6% 0.6%

3204 - Tunnel Box 0.5% 0.5% 0.5% 0.5% 0.5%

3205 - Backfill and Restoration 0.4% 0.4% 0.4% 0.4%

3206 - Demolish Ma Tau Kok Public Pier 0.2% 0.2% 0.2%

3206 - Staged Handover of Temporary PTI 0.2% 0.2% 0.2% 0.2%

3207 - Dredging 0.0% 0.0% 0.0% 0.0%

3208 - Temporary Reclamation 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5%

3209 - Cast Diaphragm Wall Inside Temporary Seawall 0.4% 0.4%

3209 - Staged Excavation Adding Struts with Depth 0.6% 0.6% 0.6% 0.6% 0.6% 0.6%

3210 - Tunnel Box 0.5% 0.5% 0.5% 0.5% 0.5% 0.5%

3211 - Backfill & Restoration 0.4% 0.4% 0.4% 0.4%

3212 - Final Seabed Restoration and Interfacing 0.0% 0.0% 0.0% 0.0%





Preliminary Construction Programme for East Portion - CKR Landscape Deck, Main Road and Slip Road

Activities


CKR Landscape Deck, Main Road and Slip Road

3301 - Diaphragm Walls 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2%

3302 - Site Formation, Levelling & Excavation Works 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3%

3302 - Construction & Paving Works 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3%

3303 - Site Formation, Levelling & Excavation Works 0.3% 0.3% 0.3% 0.3% 0.3% 0.3%

3303 - Construction & Paving Works 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3%

3401 - Site Formation, Levelling & Excavation Works 0.3% 0.3%

3401 - Construction & Paving Works 0.3% 0.3%

3401 - Fitting Works 0.2%


3402 - Construction & Paving Works 0.3% 0.3%


3403 - Site Formation, Levelling & Excavation Works 0.3% 0.3% 0.3%

3403 - Construction & Paving Works 0.3% 0.3% 0.3% 0.3% 0.3%



3404 - Construction & Paving Works 0.3% 0.3% 0.3% 0.3% 0.3% 0.3%






2019

2015 2016 2017 2018 2019

1.1%

0.9%

20182016 20172015

1.0%

0.8%

Preliminary Construction Programme for East Portion - Ventilation and Adminstration Buildings

Activities


Ventilation and Adminstration Buildings


3405 - Construction & Paving Works 4.0% 4.0% 4.0% 4.0% 4.0% 4.0%


3406 - Foundation Works for Administration and Ventilation Building in Kai Tak 2.2% 2.2% 2.2% 2.2% 2.2% 2.2% 2.2% 2.2% 2.2% 2.2%

3406 - Construction of Administration and Ventilation Buildings 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4% 1.4%

3406 - Construct Ventilation Duct 3.0% 3.0% 3.0%





Preliminary Construction Programme for East Portion - Other Connection Roads

Activities


Other Connection Roads


3407 - Construction & Paving Works 0.8% 0.8% 0.8% 0.8% 0.8%



3408 - Construction & Paving Works 0.8% 0.8% 0.8% 0.8%







Works Area


Tunnel assoicated Works in Ma Tau Kok Area 254 254 254 436 436 473 473 405 405 368 339 339 422 422 422 422 459 459 401 401 401 401 198 174 174 174 174 203 203 203 203 203 203 203 173 173 256 256 256 256 256 256 198 198 198 198 198 198 174 174 174 174 0 0 0 0 0 0 0 0

CKR Landscape Deck, Main Road and Slip Road 802 802 857 857 637 590 590 617 645 645 645 645 691 581 664 664 691 691 479 479 479 479 369 239 239 239 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Ventilation and Adminstration Buildings 0 0 0 0 0 262 262 262 262 262 262 262 262 262 262 169 169 169 169 169 169 169 169 594 594 648 648 648 648 648 648 428 169 169 169 356 356 356 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Other Connection Roads 0 0 0 0 0 424 424 424 479 479 479 479 239 259 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Monthly 1-hour & 24-hour Active Area in Eastern Portion 1056 1056 1111 1293 1073 1749 1749 1709 1791 1754 1724 1724 1615 1524 1348 1255 1319 1319 1049 1049 1049 1049 736 1007 1007 1061 822 851 851 851 851 631 372 372 342 529 613 613 256 256 256 256 198 198 198 198 198 198 174 174 174 174 0 0 0 0 0 0 0 0

Annual Actice Area in Eastern Portion 1482 1193 712 287 58

Max. 1-hour & 24-hour Active Area in Eastern Portion = m2

Max. Annual Active Area in Eastern Portion = m2

2016 2017 2018 2019

20182016 2017 2019

1.5%

0.8%

2015

1791

1482

2015

5.4%

4.0%

2015

2016 2017 2018 2019

Calculation of Watering Efficiency (for construction site)

where

p = Potential average hourly daytime evaporation rate, mm/hour = 0.25916 [1]

d = Average hourly daytime traffic rate per hour = 54 per hour [2]

I = Application intensity = 1.3 L/m2 [3]

Note:

[1]

[2] Estimated by Engineer

[3]

By applying the Equation (3-2) with the above assumptions,

Dust suppression efficiency = 100 – 0.8 x (0.25916 x 54 x t) / 1.3 [t = time between application, hr]

Therefore,

For watering once per hour (i.e. t =1 hour), the estimated dust suppression efficiency is 91.7%.

With reference to Cowherd et al., “Control of Open Fugitive Dust Sources, EPA-450/3-88-008, U.S.

Environmental Protection Agency, Research Triangle Park, NC, percentage of dust mitigation efficiency is

calculated from Equation (3-2) :

p = 0.0049 x 52.8898 inch, where 52.8898inch is equivalent to the total evaoporation of 1343.4mm obtained

from Hong Kong Observatory (http://www.weather.gov.hk/cis/normal/1971_2000/normals_e.htm)

The assumptions provided are for the purpose of assessment predictions only. Actual figures would be defined in

the detailed design stage.

i

pdtC

8.0100 −=

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Calculation of Watering Efficiency (for Stockpile)

[for 1 ≤ M ≤ 2]

[for 2 ≤ M ≤ 5]

where c = Instanteous control efficiency (%)

M = Ratio of controlled to uncontrolled surface moisture contents

Dust suppression efficiency = 75 x (1.67 - 1) = 50%

Watering Intensity

Given

Area of Stockpile = 5225 m2

Dry Fill Density = 1700 kg/m3

Uncontrolled Surface Moisture Content = 2 %

Controlled Surface Moisture Content = 3.3 %

Assume

Depth of Water Penetrated into Stockpile = 0.02 m see Note [1]

Therefore,

Weight of Uncontrolled Wet Stockpile Surface = = 181276 kg

Weight of Controlled Wet Stockpile Surface = = 183776 kg

Watering Intensity = = 0.5 L/m2/hour

Note [1]

(183776 - 181276) / 5225

With reference to Cowherd et al., “Control of Open Fugitive Dust Sources, EPA-450/3-88-008, U.S. Environmental

Protection Agency, Research Triangle Park, NC, percentage of dust mitigation efficiency is calculated from Equation (3-3)

and Figure 3-3 :

According to the Equation (3-3), by increasing the surface moisture content by a ratio of 1.67 would achieve 50% dust

suppression efficiency :

Referenced from the Dennis R. Fitz & Kurt Bumiller (2000) "Evaluation of Watering to Control Dust in High Winds", Journal of the Air &

Waste Management Assoication

5225 x 1700 x 0.02 / (1 - 0.02)

5225 x 1700 x 0.02 / (1 - 0.033)

175 MC

MC 7.662

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Documents

Justification for the Percentage of Active Works Areas and ... · 1. Active Area means the works area that would generate dust emissions during construction phase (estimated by the