3.2 Environmental Legislation,
Policies, Plans, Standards and Criteria
3.3 Description of the
Environment
3.5 Identification of
Environmental Impacts
3.7 Prediction and Evaluation
of Environmental Impacts
3.8 Mitigation of Adverse
Environmental Impacts
3.9 Evaluation of Residual
Impacts
3.10 Environmental Monitoring
and Audit
Air
Quality Objective & EIAO-TM
Table 3.1
|
Maximum Concentration (µg m-3) (1) |
|||
Pollutant |
Averaging Time |
|||
|
1
hour (2) |
8
hour (3) |
24
hour (3) |
Annual
(4) |
Total Suspended Particulates (TSP) |
- |
- |
260 |
80 |
Respirable Suspended Particulates (RSP) (5) |
- |
- |
180 |
55 |
|
800 |
- |
350 |
80 |
Nitrogen Dioxide (NO2) |
300 |
- |
150 |
80 |
Carbon Monoxide (CO) |
30,000 |
10,000 |
- |
- |
Photochemical Oxidants (as Ozone, O3) (6) |
240 |
- |
- |
- |
Notes:
(1)
Measured
at 298 K and 101.325 kPa.
(2)
Not to
be exceeded more than three times per year.
(3)
Not to
be exceeded more than once per year.
(4)
Arithmetic
mean.
(5)
Suspended
particulates in air with a nominal aerodynamic diameter of 10 mm
or smaller.
(6)
Photochemical
oxidants are determined by measurement of ozone only.
Air Pollution Control (Construction Dust) Regulation
Practice Note on Control of Air Pollution
in Vehicle Tunnels
Table 3.2 Tunnel
Air Quality Guidelines (TAQG)
Air Pollutant |
Averaging Time |
Maximum Concentration |
|
(mg/m3)
(1) |
ppm |
||
Carbon
Monoxide (CO) |
5 minutes |
115, 000 |
100 |
Nitrogen
Dioxide (NO2) |
5 minutes |
1,800 |
1 |
Sulphur
Dioxide (SO2) |
5 minutes |
1,000 |
0.4 |
Note: (1) Expressed at
reference conditions of 298K and 101.325kPa.
Table 3.3 Annual
Average Concentrations of Pollutants in 2006
Pollutant |
Annual Average Concentration in 2006 (mg m-3) |
Monitoring Stations |
CO |
862 |
Central |
NO2 |
54 |
Central / Western |
RSP |
53 |
Central / Western |
TSP |
78 |
Central / Western |
Table 3.4 Details
of Air Sensitive Receivers
|
|||||||
Existing |
|||||||
A25 |
Wanchai |
Police Headquarters |
G/IC |
7 |
306 |
357 |
1 |
A26 |
Wanchai |
HK Academy for Performing Arts (Office/Performance Hall) |
G/IC |
9 |
186 |
254 |
1 |
A27 |
Wanchai |
Arts Centre |
G/IC |
10 |
200 |
175 |
1 |
A28 |
Wanchai |
Citic Tower |
Commercial |
42 |
160 |
385 |
1 |
A29 |
Wanchai |
Servicemen's Guides Association |
Commercial |
3 |
116 |
228 |
1 |
A30 |
Wanchai |
HK Academy for Performing Arts (Open Space) |
G/IC |
9 |
160 |
144 |
1 |
A31 |
Wanchai |
Shui On Centre |
Commercial |
34 |
190 |
160 |
1 |
A32 |
Wanchai |
Hong Kong Convention & Exhibition Centre (HKCEC) |
Commercial |
46 |
60 |
229 |
1 |
A33 |
Wanchai |
Pedestrian plaza |
Recreation |
0 |
95 |
62 |
1 |
A34 |
Wanchai |
HKCEC Extension |
Commercial |
8 |
100 |
177 |
1 |
A35 |
Wanchai |
Great Eagle Centre |
Commercial |
27 |
112 |
372 |
1 |
A36 |
Wanchai |
Causeway Centre (Block A) |
Residential |
42 |
178 |
531 |
1 |
A37 |
Wanchai |
Wanchai Swimming Pool |
Recreation |
3 |
58 |
568 |
1 |
A38 |
Wanchai |
Wanchai Sports Ground |
Recreation |
0 |
74 |
723 |
1 |
A39 |
Wanchai |
SPCA |
G/IC |
6 |
62 |
787 |
1 |
A40 |
Wanchai |
Gloucester Road 169-170 |
Residential |
12 |
306 |
750 |
1 |
A41 |
Wanchai |
Gloucester Road 210 |
Residential |
18 |
276 |
870 |
1 |
A42 |
Wanchai |
Gloucester Road 226 |
Residential |
22 |
264 |
924 |
1 |
A43 |
Causeway Bay |
Elizabeth House |
Residential |
21 |
231 |
1023 |
1 |
A44 |
Causeway Bay |
Sino Plaza |
Commercial |
33 |
182 |
900 |
2 |
A45 |
Causeway Bay |
World Trade Centre |
Commercial |
34 |
151 |
756 |
2 |
A46 |
Causeway Bay |
Excelsior Hotel |
Commercial |
28 |
147 |
726 |
2 |
A47 |
Causeway Bay |
Riviera Mansion |
Residential |
15 |
162 |
705 |
2 |
A48 |
Causeway Bay |
Marco Polo Mansion (northern façade) |
Residential |
15 |
174 |
633 |
2 |
A49 |
Causeway Bay |
Marco Polo Mansion (eastern façade) |
Residential |
15 |
180 |
606 |
2 |
A50 |
Causeway Bay |
Royal Hong Kong Yacht Club |
Recreation |
3 |
59 |
720 |
2 |
A51 |
Causeway Bay |
Police Officers Club (Tennis Courts) |
Recreation |
0 |
70 |
840 |
2 |
A52 |
Causeway Bay |
Police Officers Club (Bowling Green) |
Recreation |
0 |
116 |
822 |
2 |
A53 |
Causeway Bay |
Police Officers Club |
Recreation |
3 |
68 |
774 |
2 |
A54 |
Causeway Bay |
Bowling Green, Victoria Park |
Recreation |
0 |
226 |
438 |
2 |
A55 |
Causeway Bay |
Victoria Park Public Swimming Pool |
Recreation |
0 |
322 |
483 |
2 |
A56 |
Causeway Bay |
Viking Garden |
Residential |
25 |
434 |
591 |
2 |
A57 |
Causeway Bay |
Victoria court |
Residential |
18 |
380 |
534 |
2 |
A58 |
Causeway Bay |
Mayson Garden |
Residential |
24 |
327 |
480 |
2 |
A59 |
Causeway Bay |
Gorden House |
Residential |
15 |
293 |
471 |
2 |
A60 |
Causeway Bay |
Belle House |
Residential |
24 |
214 |
366 |
2 |
A61 |
Causeway Bay |
Citicorp Centre |
Commercial |
36 |
146 |
294 |
2 |
A62 |
Causeway Bay |
Hoi Tao Building |
Residential |
30 |
160 |
300 |
2 |
A63 |
Causeway Bay |
Victoria Centre |
Residential |
30 |
63 |
249 |
2 |
A64 |
Causeway Bay |
Seaview Estate |
Industrial/ commercial |
13 |
63 |
282 |
2 |
A65 |
Causeway Bay |
Harbour Heights |
Residential |
44 |
674 |
312 |
2 |
A66 |
Causeway Bay |
Whitfield Road Rest Garden |
Recreation |
0 |
165 |
318 |
2 |
A93 |
North Point |
City Garden (Block 11) (the height of 1st Sensitive Receiver
is located at 5m above ground) |
Residential |
27 |
16 |
612 |
2 |
A94 |
North Point |
City Garden (Block 6) (the height of 1st Sensitive Receiver is
located at 5m above ground) |
Residential |
27 |
20 |
744 |
2 |
A95 |
North Point |
Hong Kong Baptist Church Henrietta Secondary School |
Educational |
N/a |
44 |
810 |
2 |
A96 |
North Point |
Provident Centre (Block 1) |
Residential |
25 |
46 |
918 |
2 |
A97 |
North Point |
Provident Centre (Block 6) |
Residential |
25 |
34 |
984 |
2 |
A98 |
North Point |
Provident Centre (Block 17) |
Residential |
25 |
48 |
1176 |
2 |
Future |
|||||||
A70 |
Central |
Central Government Complex |
G/IC |
N/a |
360 |
564 |
1 |
A71 |
Central |
New G/IC site south and east of CITIC Tower |
G/IC |
20 |
264 |
360 |
1 |
A73 |
Central |
Waterfront related commercial and leisure uses |
Recreation |
N/a |
42 |
246 |
1 |
A76 |
Central |
Open space at the west of HKCEC |
Recreation |
N/a |
10 |
132 |
1 |
A81 |
Wanchai |
Waterfront related commercial and leisure uses |
Commercial |
N/a |
15 |
432 |
1 |
A91 |
North Point |
A land zone as “CDA(1) near Oil Street |
CDA(1) |
45 |
40 |
272 |
2 |
A92 |
North Point |
A land zoned as CDA near Oil Street |
CDA |
45 |
32 |
369 |
2 |
A99 |
Wanchai |
OU(Railway Air Intake
Location) zone |
Other use |
3.5m above ground |
28 |
246 |
1 |
*Distance from the edge of Trunk Road/ IECL alignment.
1
Distance from the Central Ventilation Building.
2
Distance from the exhaust vent shaft of the East Ventilation Building.
Air Quality Impact from Construction Activities
Traffic Emission Impact
·
Planned deckover along Road P2
·
Landscape deck to HKCEC West
·
Existing deckover over Expo Drive
·
Deckover (New Atrium Link) between Expo Drive
Central and Convention Avenue
·
Landscaped deck link to waterfront and ferry pier
·
Landscaped deck from Victoria Park to CBTS
waterfront
·
Landscaped deck over Trunk Road Portal
·
background pollutant levels based on five years
averaged monitoring data from EPD monitoring station at Central/Western
·
vehicle emissions from open sections of existing and
planned road networks in WDII Project and the CWB
·
emissions from Central Ventilation Building and East
Ventilation Building
·
portal emissions from the existing Cross Harbour
Tunnel (CHT)
·
portal emissions from the planned deckovers along
Road P2
·
portal emissions from the existing deckover over
Expo Drive
·
portal emissions from the proposed deckover (New
Atrium Link) between Expo Drive Central and Convention Avenue.
Table 3.5 Emission
Factors for Construction Activities
Construction Activities |
Emission Rate (g/m2/s) |
Remark |
Road Construction, Building Construction and
Material Handling (as Heavy Construction) |
E = 3.113426E-05 |
- 50% work area - 75% reduction by water suppression (watering four times a day) -USEPA AP-42 5th
ED., S.13.2.3.3 |
Wind Erosion |
E = 1.347666E-06 |
- 50% work area - AP-42 5th ED., S.11.9 Table 11.9.4 |
Causeway Bay Temporary
Reclamation (CBR)
·
Temporary Relocation
Causeway Bay Typhoon Shelter (CBTS)
·
CBTS Temporary Reclamation
Stage 1 (TCBR1W & TCBR1E)
·
CBTS Temporary Reclamation
Stage 2 (TCBR2)
·
CBTS Temporary Reclamation
Stage 3 (TCBR3)
·
CBTS Temporary Reclamation
Stage 4 (TCBR4)
·
Slip Road 8 & Victoria
Park Reprovisioning
Ex-PCWA Temporary Reclamation
·
Temporary Reclamation PCWA
Stage 1 (TPCWAE)
·
Temporary Reclamation PCWA
Stage 2 (TPCWAW)
Wan Chai Reclamation (WCR)
·
Wan Chai Reclamation Stage 1
(WCR1)
·
Wan Chai Reclamation Stage 2
(WCR2)
·
Wan Chai Reclamation Stage 3
(WCR3)
·
Wan Chai Reclamation Stage 4
(WCR4)
·
New Ferry Pier
Reprovisioning & Demolish Existing Pier
·
Helipad Reprovisioning at
HKCEC
·
Roads
HKCEC Reclamation
·
HKCEC Reclamation Stage 1
(Water Channel) (HKCEC1)
·
HKCEC Reclamation Stage 2
(HKCEC2E & HKCEC2W)
·
MTR Tunnel Crossing
·
HKCEC Reclamation Stage 3
(HKCEC3E & HKCEC3W)
·
Roads
Cross Harbour Watermains
·
Submarine Pipeline
·
Land Section
North Point Reclamation (NPR)
·
North Point Reclamation
Stage 1 (NPR1)
·
North Point Reclamation
Stage 2 (NPR2E & NPR2W)
Construction of IECL
·
IECL Connection Work
·
East Portal and IEC
Connection
Construction of Central
Interchange
Tunnel Building and Installation
·
East Ventilation Building
·
Administration Building
·
Central Ventilation Building
Construction of CWB Tunnel
Under CRIII Project
·
CWB Tunnel at Initial
Reclamation Area East
·
CWB Tunnel at Final
Reclamation Area East
Table 3.6 Different
Major Dust Generating Activities in the Worst Case Scenarios during
Construction Phase
Period |
2009 – Early 2010 |
Mid 2010 – Early 2011 |
Mid 2011 – Early 2012 |
Mid 2012 – Early 2013 |
Mid 2013 – Early 2014 |
Mid 2014-2016 |
Worst month |
Jan 2010 |
Aug 2010 |
April 2012 |
Feb 2013 |
Nov 2013 |
Apr 2015 |
Activities |
Scenario 1 |
Scenario 2 |
Scenario 3 |
Scenario 4 |
Scenario 5 |
Scenario 6 |
1 |
TCBRIE– Filling |
TCBR1E
– CWB Tunnel |
TCBR1W – CWB Tunnel |
TCBR3 – CWB Tunnel |
TCBR3 – CWB Tunnel |
TCBR4-CWB Tunnel |
2 |
TCBRIW
– Filling |
TCBR1W
– CWB Tunnel |
TCBR2 – CWB Tunnel |
TCBR4 – Filling |
TCBR4 – CWB Tunnel |
TPCWAW-CWB Tunnel |
3 |
TCBRIE
– CWB
Tunnel |
TCBR2
– CWB Tunnel |
TCBR3 – CWB Tunnel |
TPCWAW – CWB Tunnel |
Slip Rd 8 & Victoria
Park Reprovisioning |
Realignment Hung Hing Road |
4 |
TCBR2
– Filling |
TPCWAE
– CWB Tunnel |
TPCWAE – CWB Tunnel |
WCR2 – Promenade |
TPCWAW – CWB Tunnel |
Road P2 from Fleming Road to
Marsh Road |
5 |
TPCWAE
– CWB Tunnel |
WCR1
- Drainage |
WCR2 – CWB Tunnel |
WCR3 – Filling |
WCR3 – CWB Tunnel |
Mainline to IEC |
6 |
WCR1 – Filling |
WCR1
– Cooling Water |
HKCEC2E – Filling |
WCR4 – Filling |
WCR4 – CWB Tunnel |
|
7 |
WCR1 – CWB Tunnel |
WCR1
– CWB Tunnel |
HKCEC2W – Filling |
WCR4 – Drainage |
HKCEC2E – Drainage |
|
8 |
New Ferry Piers |
HKCEC1 – Cooling Water |
HKCEC3E – Filling |
HKCEC2W – CWB Tunnel |
HKCEC2W – Drainage |
|
9 |
HKCEC1 – Cooling Water |
MTR - Piling |
HKCEC3E – Drainage |
HKCEC3W – CWB Tunnel |
HKCEC2E – CWB Tunnel |
|
10 |
HKCEC2E - Filling |
NPR1 – CWB Tunnel |
HKCEC3W – Drainage |
HKCEC3E – CWB Tunnel |
HKCEC2W – CWB Tunnel |
|
11 |
Cross Harbour Watermains –
Land Sections |
NPR2E – Filling |
HKCEC3E – CWB Tunnel |
IEC Connection Work |
HKCEC3E – CWB Tunnel |
|
12 |
NPR1 – CWB Tunnel |
CRIII – CWB Tunnel at
Initial Area East |
NPR2W – CWB Tunnel |
East Ventilation Building |
HKCEC3W – CWB Tunnel |
|
13 |
NPR2E – Filling |
CRIII – CWB Tunnel at Final
Area West |
|
|
|
|
14 |
NPR2W – CWB Tunnel |
CRIII – CWB Tunnel at Final
Area East |
|
|
|
|
15 |
CRIII – CWB Tunnel at
Initial Area East |
|
|
|
|
|
16 |
CRIII-CWB Tunnel at Final
East |
|
|
|
|
|
·
Wind
direction: 360
wind direction
·
Stability
class: D (daytime) & F (night time)
·
Surface
roughness: 1m
Daily TSP concentration = (number of working hour)/24 ´ (1-hour average maximum TSP
concentration during working hours) + (number of non-working hour)/24 ´ (1-hour average maximum TSP
concentration during non-working hours) + Background
Vehicular Emission Impact (Open Road)
·
background
pollutant levels based on five years averaged monitoring data from EPD
monitoring stations at Central/Western
·
vehicle
emissions from open sections of existing and planned road networks (e.g. Trunk
Road) in WDII Project and CWB Project
·
emissions
from Central Ventilation Building and East Ventilation Building
·
portal
emissions from the existing Cross Harbour Tunnel (CHT)
·
portal
emissions from the planned deckovers along Road P2
·
portal
emissions from the existing deckover over Expo Drive
·
portal
emissions from the proposed deckover (New Atrium Link) between Expo Drive
Central and Convention Avenue
Background Concentration
Table
3.7 Annual Average
Concentrations of Pollutants in Past Five Years
Pollutant |
Annual Average
Concentration in Past Five Years (2000, 2003-2006) at Central/Western Station
(mg m-3) |
NO2 |
55 |
RSP |
54 |
Vehicle Emissions from Open Sections of Existing and
Planned Road Networks
·
new roads in the WDII
·
new roads in the Central
Reclamation Phase III (CRIII)
·
the Trunk Road & IECL
·
the existing roads
(including Island Eastern Corridor, Victoria Park Road, Gloucester Road,
Harcourt Road, Causeway Road, Hennessy Road and Queensway).
Fleet Average Emission Factors
Vehicle Classes
Table 3.8 Vehicle
Classes in EMFAC-HK Model
Vehicle Class |
Description |
Fuel Type |
Gross Vehicle Weight |
MC1 |
Petrol
Private Cars (PC) & Light Goods Vehicles (LGV) |
Petrol |
all |
MC3 |
Diesel
Private Cars & Light Goods Vehicles<2.5t |
Diesel |
<=2.5t |
MC4 |
Diesel
Private Cars & Light Goods Vehicles 2.5-3.5t |
Diesel |
>2.5-3.5t |
MC5 |
Public
Light Buses |
LPG,
Diesel |
all |
MC6 |
Light
Goods Vehicles >3.5t |
Diesel |
>3.5-5.5t |
MC7 |
Medium
& Heavy Goods Vehicles with GVW 5.5-15t |
Diesel |
>5.5-15t |
MC8 |
Medium
& Heavy Goods Vehicles with GVW >=15t |
Diesel |
>15t |
MC10 |
Double
Deck Franchised Buses |
Diesel |
all |
MC11 |
Motor
Cycles |
Petrol |
all |
Taxi3 |
Taxi |
LPG |
all |
Taxi4 |
Private
Light Buses <3.5t |
LPG,
Diesel |
<=3.5t |
Taxi5 |
Private
Light Buses >3.5t |
LPG,
Diesel |
>3.5t |
Taxi6 |
Non-
franchised Buses <6.4t |
Diesel |
<=6.4t |
Taxi7 |
Non-
franchised Buses 6.4-15t |
Diesel |
>6.4-15t |
Taxi8 |
Non-
franchised Buses >15t |
Diesel |
>15t |
Taxi10 |
Single
Deck Franchised Buses |
Diesel |
all |
Road Grouping
Input Assumptions in EMFAC-HK
Modelling Modes
Technology Fractions
Exhaust Technology Fractions
Evaporative Technology Fractions
Vehicle Population
Accrual Rate
Diurnal Variation of Daily Trips and Daily
Vehicle-Mile-Travelled (VMT)
Diurnal Variation of Daily Trips
Vehicle Trip of Class 1 in the
Study Area at hour 1 = Vehicle trip of Class 1 in the territory* at hour 1 ´ VMT for vehicle class 1 in the Study Area at hour 1 /
VMT for vehicle class 1 in the territory
*
where the trip and VMT in the territory could be read from the default data of
EMFAC-HK model
Diurnal Variation of Daily Vehicle-Mile-Travelled
(VMT)
Hourly Temperature and Relative Humidity Profile
Speed Fractions
Model Year
Table 3.9 Emission
Factors for Year 2016 for Different Vehicle Classes (EMFAC-HK)
Vehicle Class |
Description |
Emission Factors for 2016, g/mile-veh |
|||
NOx |
RSP |
||||
Trunk Road |
Other Road |
Trunk Road |
Other Road |
||
MC1 |
Petrol Private Cars (PC) & Light Goods Vehicles
(LGV) |
0.1433 |
0.1545 |
0.0047 |
0.0063 |
MC3 |
Diesel Private Cars & Light Goods
Vehicles<2.5t |
0.4012 |
0.4157 |
0.1284 |
0.1516 |
MC4 |
Diesel Private Cars & Light Goods Vehicles
2.5-3.5t |
0.2642 |
0.2702 |
0.0813 |
0.0896 |
MC5 |
Public Light Buses |
0.1208 |
0.1163 |
0.0887 |
0.0835 |
MC6 |
Light Goods Vehicles >3.5t |
2.1532 |
2.2242 |
0.1547 |
0.1836 |
MC7 |
Medium & Heavy Goods Vehicles with GVW 5.5-15t |
4.4177 |
4.6047 |
0.2553 |
0.3066 |
MC8 |
Medium & Heavy Goods Vehicles with GVW >=15t |
5.4535 |
6.0203 |
0.3635 |
0.4121 |
MC10 |
Double Deck Franchised Buses |
2.7890 |
2.8216 |
0.0808 |
0.0902 |
MC11 |
Motor Cycles |
1.1216 |
1.0611 |
0.0487 |
0.0503 |
Taxi3 |
Taxi |
0.2376 |
0.2585 |
0.0188 |
0.0252 |
Taxi4 |
Private Light Buses <3.5t |
0.0000# |
0.0000# |
0.0000# |
0.0000# |
Taxi5 |
Private Light Buses >3.5t |
0.3270 |
0.3390 |
0.1972 |
0.2421 |
Taxi6 |
Non- franchised Buses <6.4t |
0.0000# |
0.0000# |
0.0000# |
0.0000# |
Taxi7 |
Non- franchised Buses 6.4-15t |
3.7716 |
4.7213 |
0.1433 |
0.1790 |
Taxi8 |
Non- franchised Buses >15t |
7.1778 |
3.6599 |
0.1433* |
0.1790* |
Taxi10 |
Single Deck Franchised Buses |
2.5173 |
2.4728 |
0.1631 |
0.1126 |
Note:
# - Since there is no private light buses <3.5t and non-franchised
buses <6.4t travelled within the study area, the calculated emission factors
for these two vehicle classes are zero.
* - Since the VMT of
non-franchised buses >15t is too small (only 4 vehicles within the study
area in Year 2031), the calculated RSP emission factor for this vehicle class
is zero in the EMFAC output model file.
As a conservative approach, the RSP emission factor of non-franchised
buses 6.4-15t would be adopted for non-franchised buses >15t.
Model Assumptions for Open Road Vehicle Emission
·
Wind speed : 1 m s-1
·
Wind direction : 360 wind directions
·
Resolution : 1°
·
Wind variability : 24°
·
Stability class : D
·
Surface roughness : 1 m
·
Mixing height : 500 m
Portal and Ventilation
Building Emissions
·
tunnel
portal and ventilation building emissions from the tunnel section of the Trunk
Road
·
tunnel
portal emissions from the existing CHT
·
portal
emission from deckover over Expo Drive
·
portal
emission from proposed deckover (New Atrium Link) between Expo Drive Central
and Convention Avenue
·
portal
emissions from the planned deckovers along Road P2.
·
West
Ventilation Building (WVB): for extracting polluted tunnel air from the Trunk
Road Westbound
·
Central
Ventilation Building (CVB): for extracting polluted tunnel air from the Trunk
Road Westbound, Trunk Road Eastbound, Slip Road 1 and Slip Road 3
· East Ventilation Building (EVB): for extracting polluted tunnel air from the Trunk Road Eastbound.
Table 3.10 Portal and
Ventilation Building Emissions
Type |
NOX (g/s) |
RSP (g/s) |
Portal Emission |
||
Trunk Road Eastbound |
0 |
0 |
Slip Road 1 |
0 |
0 |
Slip Road 2 under HKCEC Atrium Link Deckover |
1.455E-02 |
7.956E-04 |
Slip Road 3 |
0 |
0 |
Cross Harbour Tunnel |
1.110E+00 |
6.828E-02 |
Expo Drive Central |
1.024E-02 |
5.787E-04 |
P2 Road (Eastbound)
Under HKCEC Atrium Link Deckover |
9.892E-03 |
6.026E-04 |
P2 Road (Westbound) Under
HKCEC Atrium Link Deckover |
1.319E-02 |
8.972E-04 |
Central
Wan Chai Bypass (Westbound) Under HKCEC Atrium Link Deckover |
8.654E-03 |
6.781E-04 |
Convention
Avenue Under HKCEC Atrium Link Deckover |
1.527E-02 |
9.951E-04 |
Expo
Drive |
6.476E-02 |
4.335E-03 |
P2 Road between Tim Wa Ave, and Tim Mei Ave |
2.060E-02 |
1.482E-03 |
Ventilation Building |
||
East Ventilation Building (Trunk Road Eastbound) |
2 |
2.258E-02# |
Central Ventilation Building |
3.966 |
3.003E-01 |
Note: # Electrostatic
precipitator will be installed, dust removal efficiency of 80% has been
considered in the calculation.
Table 3.11 Design
of Ventilation Buildings
|
Cross-sectional area of stack (m2) |
Exit velocity (m s-1) |
Minimum mid-discharge height (meter above ground) |
Exhaust direction |
East Ventilation Building (EVB) - Vent shaft at the breakwater |
94 |
8 |
16.25 |
Inclined 45
degree upward
(discharge towards sea direction) |
Central Ventilation
Building (CVB) |
219 |
8 |
17.5 |
Vertical |
·
Wind speed : 1 m s-1
·
Wind direction : 360 wind directions
·
Resolution : 1°
·
Stability class : D
·
Mixing height : 500 m
·
Emission temperature : 7° above ambient
Cumulative Impact
·
the CALINE4 model was used to predict the open road
emissions from the existing and planned road networks
·
the ISCST3 model was used to predict all the portal
emissions (Trunk Road, CHT, existing deckover and planned deckover) and
ventilation shaft emissions.
Vehicular Emission Impact (Inside the CWB Tunnel/ deckover)
(i)
Deckover
along Expo Drive Central – emissions contributed from Expo Drive Central
(ii)
Deckover
along Road P2 Eastbound & Westbound and CWB Slip Road 2 & Slip Road 3 -
emissions contributed from Road P2 Eastbound & Westbound, CWB Slip Road 2
& Slip Road 3 (open road section under the deckover)
(iii)
Deckover
along Convention Avenue – emissions contributed from Convention Avenue
Construction Dust and Road
Traffic Emission Impact Assessments
Table 3.12 Predicted
Cumulative Maximum 1-hour Average TSP Concentrations at 1.5m above ground
ASR |
Predicted Concentration (mg m-3) * |
||||||
Scen. 1 |
Scen. 2 |
Scen. 3 |
Scen. 4 |
Scen. 5 |
Scen. 6 |
Max. |
|
A25 |
123
|
107
|
172
|
162
|
172
|
92
|
172
|
A26 |
151
|
130
|
252
|
247
|
252
|
94
|
252
|
A27 |
195
|
135
|
199
|
196
|
199
|
101
|
199
|
A28 |
132
|
120
|
222
|
204
|
226
|
91
|
226
|
A29 |
170
|
154
|
409
|
402
|
408
|
94
|
409
|
A30 |
216
|
175
|
277
|
276
|
277
|
99
|
277
|
A31 |
208
|
138
|
193
|
192
|
193
|
106
|
208
|
A32 |
221
|
186
|
394
|
434
|
421
|
155
|
434
|
A33 |
378
|
232
|
367
|
269
|
366
|
107
|
378
|
A34 |
246
|
173
|
328
|
224
|
328
|
103
|
328
|
A35 |
141
|
126
|
240
|
278
|
278
|
149
|
278
|
A36 |
124
|
121
|
175
|
205
|
200
|
117
|
205
|
A37 |
214
|
213
|
329
|
414
|
358
|
256
|
414
|
A38 |
241
|
228
|
235
|
292
|
214
|
173
|
292
|
A39 |
225
|
206
|
199
|
238
|
190
|
184
|
238
|
A40 |
113
|
112
|
131
|
152
|
148
|
105
|
152
|
A41 |
120
|
118
|
129
|
150
|
142
|
113
|
150
|
A42 |
121
|
120
|
129
|
147
|
138
|
120
|
147
|
A43 |
127
|
125
|
125
|
138
|
134
|
132
|
138
|
A44 |
150
|
149
|
149
|
163
|
151
|
139
|
163
|
A45 |
189
|
189
|
189
|
218
|
209
|
192
|
218
|
A46 |
193
|
193
|
193
|
230
|
223
|
206
|
230
|
A47 |
180
|
180
|
180
|
226
|
222
|
208
|
226
|
A48 |
158
|
158
|
158
|
224
|
224
|
218
|
224
|
A49 |
151
|
150
|
151
|
219
|
219
|
215
|
219
|
A50 |
306
|
306
|
306
|
193
|
192
|
174
|
306
|
A51 |
212
|
212
|
212
|
210
|
204
|
180
|
212
|
A52 |
201
|
199
|
200
|
191
|
179
|
163
|
201
|
A53 |
280
|
277
|
277
|
216
|
204
|
184
|
280
|
A54 |
147
|
145
|
156
|
185
|
320
|
164
|
320
|
A55 |
125
|
123
|
129
|
153
|
237
|
127
|
237
|
A56 |
111
|
108
|
113
|
133
|
148
|
115
|
148
|
A57 |
116
|
114
|
119
|
141
|
194
|
117
|
194
|
A58 |
123
|
121
|
128
|
148
|
277
|
120
|
277
|
A59 |
129
|
128
|
137
|
154
|
183
|
122
|
183
|
A60 |
148
|
147
|
160
|
166
|
167
|
126
|
167
|
A61 |
183
|
182
|
193
|
181
|
181
|
132
|
193
|
A62 |
166
|
162
|
162
|
155
|
153
|
118
|
166
|
A63 |
221
|
212
|
174
|
195
|
152
|
119
|
221
|
A64 |
194
|
175
|
165
|
223
|
140
|
113
|
223
|
A65 |
185
|
172
|
166
|
254
|
132
|
109
|
254
|
A66 |
170
|
170
|
184
|
184
|
184
|
135
|
184
|
A70 |
217
|
210
|
168
|
162
|
174
|
88
|
217
|
A95 |
225
|
220
|
102
|
238
|
99
|
159
|
238
|
A96 |
167
|
162
|
99
|
185
|
98
|
139
|
185
|
A97 |
149
|
145
|
98
|
167
|
97
|
125
|
167
|
A98 |
121
|
117
|
95
|
132
|
95
|
95
|
132
|
Note: * Background
concentration is included.
Hourly TSP criteria (EIAO-TM): 500
mg m-3
Table
3.13 Predicted
Cumulative Maximum 24-hour Average TSP Concentrations for at 1.5m above ground
ASR |
Predicted Concentration (mg m-3) * |
||||||
Scen. 1 |
Scen. 2 |
Scen. 3 |
Scen. 4 |
Scen. 5 |
Scen. 6 |
Max. |
|
A25 |
98
|
91
|
122
|
117
|
121
|
84
|
122
|
A26 |
111
|
102
|
158
|
156
|
158
|
84
|
158
|
A27 |
131
|
105
|
134
|
133
|
134
|
88
|
134
|
A28 |
102
|
98
|
145
|
136
|
147
|
83
|
147
|
A29 |
119
|
113
|
229
|
226
|
229
|
85
|
229
|
A30 |
141
|
124
|
169
|
169
|
169
|
87
|
169
|
A31 |
137
|
106
|
131
|
130
|
131
|
90
|
137
|
A32 |
143
|
129
|
221
|
241
|
235
|
111
|
241
|
A33 |
213
|
149
|
210
|
168
|
210
|
90
|
213
|
A34 |
154
|
122
|
193
|
145
|
193
|
88
|
193
|
A35 |
106
|
101
|
152
|
169
|
168
|
109
|
169
|
A36 |
99
|
98
|
122
|
136
|
134
|
95
|
136
|
A37 |
140
|
140
|
192
|
231
|
207
|
156
|
231
|
A38 |
152
|
146
|
151
|
178
|
143
|
119
|
178
|
A39 |
145
|
137
|
136
|
154
|
132
|
124
|
154
|
A40 |
94
|
94
|
103
|
112
|
110
|
89
|
112
|
A41 |
97
|
97
|
102
|
111
|
108
|
93
|
111
|
A42 |
97
|
98
|
102
|
110
|
106
|
96
|
110
|
A43 |
100
|
100
|
100
|
107
|
104
|
101
|
107
|
A44 |
111
|
111
|
111
|
119
|
113
|
104
|
119
|
A45 |
129
|
129
|
129
|
143
|
139
|
128
|
143
|
A46 |
130
|
130
|
130
|
148
|
145
|
134
|
148
|
A47 |
124
|
124
|
124
|
146
|
144
|
135
|
146
|
A48 |
114
|
115
|
115
|
144
|
144
|
139
|
144
|
A49 |
111
|
111
|
112
|
142
|
142
|
138
|
142
|
A50 |
180
|
183
|
183
|
132
|
132
|
120
|
183
|
A51 |
139
|
141
|
141
|
139
|
136
|
122
|
141
|
A52 |
134
|
134
|
135
|
132
|
126
|
115
|
135
|
A53 |
171
|
170
|
170
|
144
|
138
|
124
|
171
|
A54 |
109
|
108
|
113
|
127
|
187
|
116
|
187
|
A55 |
99
|
99
|
101
|
113
|
151
|
99
|
151
|
A56 |
92
|
92
|
94
|
103
|
110
|
94
|
110
|
A57 |
95
|
94
|
97
|
107
|
132
|
95
|
132
|
A58 |
98
|
97
|
101
|
111
|
170
|
96
|
170
|
A59 |
101
|
100
|
105
|
114
|
126
|
97
|
126
|
A60 |
109
|
109
|
116
|
120
|
120
|
99
|
120
|
A61 |
125
|
125
|
132
|
127
|
127
|
101
|
132
|
A62 |
118
|
117
|
118
|
115
|
114
|
95
|
118
|
A63 |
142
|
142
|
124
|
132
|
113
|
95
|
142
|
A64 |
130
|
124
|
119
|
145
|
107
|
93
|
145
|
A65 |
126
|
122
|
118
|
159
|
104
|
91
|
159
|
A66 |
120
|
120
|
127
|
129
|
128
|
102
|
129
|
A70 |
141
|
139
|
121
|
118
|
124
|
82
|
141
|
A95 |
144
|
145
|
89
|
153
|
88
|
113
|
153
|
A96 |
117
|
118
|
88
|
128
|
87
|
104
|
128
|
A97 |
109
|
110
|
87
|
119
|
86
|
98
|
119
|
A98 |
97
|
97
|
86
|
103
|
86
|
85
|
103
|
Note: * Background
concentration is included.
24-hour TSP criteria (AQO): 260 mg m-3
Table 3.14 Predicted
Cumulative Maximum 1-hour Average TSP Concentrations at 5m above ground
ASR |
Predicted
Concentration (mg m-3) * |
||||||
Scen. 1 |
Scen. 2 |
Scen. 3 |
Scen. 4 |
Scen. 5 |
Scen. 6 |
Max. |
|
A25 |
125 |
104 |
175 |
163 |
174 |
93 |
175 |
A26 |
153 |
122 |
248 |
242 |
248 |
95 |
248 |
A27 |
194 |
125 |
199 |
196 |
199 |
102 |
199 |
A28 |
135 |
115 |
226 |
207 |
230 |
92 |
230 |
A29 |
173 |
142 |
364 |
354 |
364 |
95 |
364 |
A30 |
213 |
155 |
266 |
266 |
266 |
100 |
266 |
A31 |
206 |
127 |
192 |
195 |
192 |
107 |
206 |
A32 |
219 |
167 |
318 |
390 |
367 |
154 |
390 |
A33 |
323 |
187 |
312 |
270 |
311 |
109 |
323 |
A34 |
229 |
151 |
308 |
224 |
308 |
104 |
308 |
A35 |
143 |
120 |
234 |
259 |
257 |
148 |
259 |
A36 |
125 |
114 |
178 |
203 |
199 |
118 |
203 |
A37 |
203 |
182 |
258 |
371 |
344 |
208 |
371 |
A38 |
222 |
186 |
234 |
291 |
219 |
166 |
291 |
A39 |
214 |
176 |
202 |
241 |
190 |
183 |
241 |
A40 |
115 |
108 |
134 |
155 |
151 |
106 |
155 |
A41 |
122 |
114 |
132 |
153 |
145 |
113 |
153 |
A42 |
124 |
115 |
132 |
150 |
141 |
120 |
150 |
A43 |
130 |
120 |
128 |
141 |
134 |
132 |
141 |
A44 |
152 |
138 |
151 |
167 |
155 |
141 |
167 |
A45 |
185 |
167 |
185 |
221 |
211 |
193 |
221 |
A46 |
188 |
170 |
188 |
231 |
224 |
206 |
231 |
A47 |
176 |
160 |
176 |
226 |
223 |
207 |
226 |
A48 |
158 |
145 |
157 |
221 |
221 |
215 |
221 |
A49 |
152 |
139 |
152 |
216 |
216 |
211 |
216 |
A50 |
259 |
230 |
259 |
195 |
195 |
176 |
259 |
A51 |
202 |
179 |
200 |
208 |
202 |
176 |
208 |
A52 |
199 |
178 |
197 |
196 |
182 |
165 |
199 |
A53 |
265 |
233 |
263 |
220 |
206 |
186 |
265 |
A54 |
148 |
134 |
156 |
188 |
209 |
167 |
209 |
A55 |
127 |
117 |
130 |
157 |
216 |
130 |
216 |
A56 |
113 |
105 |
115 |
136 |
151 |
117 |
151 |
A57 |
118 |
109 |
121 |
144 |
191 |
119 |
191 |
A58 |
124 |
115 |
131 |
152 |
223 |
122 |
223 |
A59 |
130 |
121 |
140 |
159 |
179 |
124 |
179 |
A60 |
148 |
136 |
163 |
171 |
171 |
129 |
171 |
A61 |
180 |
163 |
196 |
186 |
185 |
135 |
196 |
A62 |
168 |
150 |
166 |
158 |
157 |
120 |
168 |
A63 |
219 |
190 |
177 |
196 |
155 |
121 |
219 |
A64 |
194 |
161 |
167 |
222 |
143 |
115 |
222 |
A65 |
186 |
157 |
167 |
248 |
135 |
111 |
248 |
A66 |
169 |
154 |
186 |
189 |
188 |
137 |
189 |
A70 |
201 |
174 |
173 |
167 |
180 |
88 |
201 |
A93 |
410 |
354 |
115 |
432 |
107 |
167 |
432 |
A94 |
301 |
258 |
106 |
299 |
102 |
169 |
301 |
A95 |
228 |
199 |
104 |
239 |
101 |
147 |
239 |
A96 |
171 |
152 |
101 |
189 |
99 |
132 |
189 |
A97 |
152 |
137 |
99 |
171 |
98 |
123 |
171 |
A98 |
124 |
113 |
96 |
135 |
96 |
96 |
135 |
Note: * Background
concentration is included.
Hourly TSP criteria (EIAO-TM): 500
mg m-3
Table 3.15 Predicted
Cumulative Maximum 24-hour Average TSP Concentrations at 5m above ground
ASR |
Predicted Concentration (mg m-3) * |
||||||
Scen. 1 |
Scen. 2 |
Scen. 3 |
Scen. 4 |
Scen. 5 |
Scen. 6 |
Max. |
|
A25 |
100
|
90
|
122
|
117
|
122
|
84
|
122
|
A26 |
112
|
98
|
154
|
152
|
154
|
85
|
154
|
A27 |
131
|
100
|
133
|
132
|
133
|
88
|
133
|
A28 |
105
|
95
|
146
|
137
|
147
|
83
|
147
|
A29 |
122
|
108
|
205
|
200
|
204
|
85
|
205
|
A30 |
140
|
114
|
162
|
162
|
162
|
87
|
162
|
A31 |
136
|
100
|
129
|
132
|
129
|
90
|
136
|
A32 |
142
|
119
|
185
|
219
|
206
|
111
|
219
|
A33 |
186
|
126
|
182
|
167
|
183
|
91
|
186
|
A34 |
145
|
111
|
181
|
144
|
181
|
89
|
181
|
A35 |
108
|
98
|
148
|
158
|
158
|
108
|
158
|
A36 |
99
|
95
|
123
|
134
|
132
|
95
|
134
|
A37 |
134
|
125
|
160
|
209
|
199
|
135
|
209
|
A38 |
142
|
126
|
149
|
176
|
144
|
116
|
176
|
A39 |
139
|
123
|
136
|
155
|
131
|
124
|
155
|
A40 |
95
|
92
|
104
|
113
|
111
|
90
|
113
|
A41 |
99
|
95
|
103
|
112
|
109
|
93
|
112
|
A42 |
100
|
96
|
103
|
111
|
107
|
96
|
111
|
A43 |
103
|
98
|
101
|
108
|
104
|
101
|
108
|
A44 |
112
|
106
|
111
|
120
|
114
|
105
|
120
|
A45 |
126
|
119
|
126
|
144
|
139
|
128
|
144
|
A46 |
127
|
119
|
127
|
148
|
145
|
134
|
148
|
A47 |
122
|
115
|
122
|
145
|
144
|
134
|
145
|
A48 |
114
|
109
|
114
|
142
|
142
|
138
|
142
|
A49 |
112
|
106
|
112
|
140
|
140
|
136
|
140
|
A50 |
158
|
145
|
157
|
132
|
132
|
121
|
158
|
A51 |
136
|
126
|
135
|
138
|
135
|
120
|
138
|
A52 |
133
|
124
|
132
|
134
|
127
|
116
|
134
|
A53 |
163
|
149
|
161
|
145
|
138
|
125
|
163
|
A54 |
110
|
104
|
113
|
128
|
137
|
117
|
137
|
A55 |
100
|
96
|
102
|
115
|
140
|
100
|
140
|
A56 |
94
|
90
|
95
|
104
|
111
|
95
|
111
|
A57 |
96
|
92
|
98
|
109
|
129
|
96
|
129
|
A58 |
99
|
95
|
102
|
113
|
144
|
97
|
144
|
A59 |
101
|
97
|
106
|
116
|
125
|
98
|
125
|
A60 |
110
|
104
|
117
|
122
|
122
|
100
|
122
|
A61 |
124
|
117
|
132
|
129
|
129
|
102
|
132
|
A62 |
119
|
111
|
119
|
116
|
115
|
96
|
119
|
A63 |
143
|
131
|
125
|
132
|
115
|
96
|
143
|
A64 |
132
|
118
|
119
|
143
|
109
|
94
|
143
|
A65 |
128
|
115
|
119
|
155
|
105
|
92
|
155
|
A66 |
118
|
112
|
128
|
131
|
130
|
104
|
131
|
A70 |
134
|
122
|
123
|
120
|
126
|
82
|
134
|
A93 |
224
|
200
|
95
|
235
|
91
|
117
|
235
|
A94 |
181
|
162
|
91
|
179
|
89
|
118
|
181
|
A95 |
148
|
135
|
90
|
152
|
89
|
108
|
152
|
A96 |
122
|
114
|
89
|
129
|
88
|
101
|
129
|
A97 |
113
|
106
|
88
|
121
|
87
|
97
|
121
|
A98 |
99
|
95
|
86
|
105
|
86
|
85
|
105
|
Note: * Background
concentration is included.
24-hour TSP criteria (AQO): 260 mg m-3
Exceedance of the 1-hour
average TSP guideline of 500 mg/m3
Scenario 1 – sea area, area
next to Cross Harbour Tunnel and area next to HKCEC, IEC
Scenario 2 – sea area and IEC
Scenario 3 – sea
area, area next to Cross Harbour Tunnel, area next to HKCEC, area underneath
New Atrium Link (Extension of HKCEC)
Scenario 4 -
sea area, IEC, part of waterfront in the vicinity of Causeway Bay
Flyover, area underneath New Atrium Link (Extension of HKCEC), area in the
vicinity of existing Wan Chai Pier and nearby PTI, area next to Servicemen’s
Guides Association
Scenario 5 – sea area, area underneath New Atrium Link
(Extension of HKCEC), area in the vicinity of existing Wan Chai Pier and nearby
PTI, area next to Servicemen’s Guides Association
Scenario 6 – sea area and part of waterfront in the
vicinity of Causeway Bay Flyover
Exceedance of the 24-hour
average TSP AQO of 260 mg/m3
Scenario 1 – sea area, area
next to Cross Harbour Tunnel and area next to HKCEC, IEC
Scenario 2 – sea area, IEC
and area next to Cross Harbour Tunnel
Scenario 3 – sea
area, area next to Cross Harbour Tunnel, areas next to Servicemen’s Guides
Association and HKCEC, area underneath New Atrium Link (Extension of HKCEC)
Scenario 4 -
sea area, IEC, part of waterfront in the vicinity of Causeway Bay
Flyover, GFS Helipad, area underneath New Atrium Link (Extension of HKCEC),
area in the vicinity of existing Wan Chai Pier and nearby PTI, area next to
Servicemen’s Guides Association
Scenario 5 – sea area, part of waterfront near
Causeway Bay Flyover, area underneath New Atrium Link (Extension of HKCEC),
area in the vicinity of existing Wan Chai Pier and nearby PTI, area next to
Servicemen’s Guides Association
Scenario 6 – sea area and part of waterfront in the
vicinity of Causeway Bay Flyover
Traffic Emission Impact (Open Road)
Table 3.16 Predicted
Cumulative Maximum 1-hour Average NO2 Concentrations at the
Representative ASRs at Different Elevations
ASRs |
Predicted 1-hour averaged Concentration (mg m-3) * |
|||||
1.5m
AGL |
5m
AGL |
10m
AGL |
20m
AGL |
30m
AGL |
40m
AGL |
|
A25 |
100 |
95 |
87 |
87 |
87 |
87 |
A26 |
79 |
78 |
77 |
77 |
77 |
77 |
A27 |
81 |
78 |
77 |
77 |
77 |
77 |
A28 |
81 |
80 |
78 |
78 |
78 |
78 |
A29 |
77 |
76 |
75 |
75 |
75 |
75 |
A30 |
81 |
79 |
77 |
77 |
77 |
77 |
A31 |
85 |
82 |
79 |
79 |
79 |
79 |
A32 |
83 |
82 |
80 |
79 |
79 |
79 |
A33 |
77 |
75 |
75 |
74 |
74 |
74 |
A34 |
74 |
74 |
74 |
74 |
73 |
73 |
A35 |
79 |
79 |
78 |
78 |
78 |
78 |
A36 |
96 |
93 |
88 |
88 |
88 |
88 |
A37 |
94 |
87 |
83 |
83 |
82 |
82 |
A38 |
98 |
94 |
89 |
88 |
88 |
87 |
A39 |
95 |
94 |
93 |
93 |
91 |
90 |
A40 |
129 |
124 |
113 |
113 |
112 |
112 |
A41 |
126 |
123 |
115 |
115 |
114 |
113 |
A42 |
132 |
127 |
118 |
117 |
116 |
115 |
A43 |
131 |
127 |
118 |
116 |
113 |
109 |
A44 |
170 |
152 |
129 |
120 |
108 |
99 |
A45 |
175 |
154 |
125 |
114 |
106 |
106 |
A46 |
167 |
149 |
122 |
114 |
106 |
106 |
A47 |
143 |
135 |
119 |
114 |
106 |
102 |
A48 |
118 |
114 |
107 |
105 |
102 |
99 |
A49 |
110 |
107 |
102 |
101 |
99 |
97 |
A50 |
194 |
189 |
174 |
135 |
101 |
83 |
A51 |
254 |
244 |
218 |
163 |
117 |
100 |
A52 |
178 |
175 |
164 |
132 |
101 |
101 |
A53 |
250 |
239 |
208 |
136 |
94 |
94 |
A54 |
97 |
93 |
89 |
89 |
89 |
89 |
A55 |
84 |
83 |
82 |
82 |
82 |
82 |
A56 |
90 |
78 |
75 |
75 |
75 |
74 |
A57 |
94 |
85 |
79 |
79 |
79 |
79 |
A58 |
96 |
86 |
82 |
82 |
82 |
82 |
A59 |
96 |
87 |
83 |
83 |
83 |
83 |
A60 |
91 |
83 |
81 |
81 |
80 |
80 |
A61 |
91 |
84 |
81 |
81 |
81 |
80 |
A62 |
88 |
83 |
79 |
79 |
79 |
79 |
A63 |
78 |
78 |
77 |
77 |
77 |
77 |
A64 |
77 |
77 |
76 |
76 |
76 |
75 |
A65 |
76 |
76 |
75 |
75 |
75 |
75 |
A66 |
83 |
83 |
82 |
82 |
82 |
82 |
A70 |
75 |
74 |
73 |
73 |
73 |
73 |
A71 |
79 |
78 |
77 |
77 |
77 |
77 |
A73 |
104 |
89 |
81 |
81 |
81 |
81 |
A76 |
90 |
86 |
81 |
81 |
81 |
81 |
A81 |
89 |
86 |
82 |
82 |
82 |
82 |
A91 |
78 |
79 |
83 |
83 |
84 |
84 |
A92 |
75 |
75 |
74 |
74 |
75 |
75 |
A93 |
82 |
82 |
80 |
80 |
80 |
80 |
A94 |
81 |
80 |
80 |
80 |
80 |
80 |
A95 |
77 |
77 |
77 |
77 |
77 |
77 |
A96 |
74 |
74 |
74 |
74 |
74 |
74 |
A97 |
76 |
75 |
74 |
74 |
74 |
74 |
A98 |
76 |
76 |
74 |
74 |
74 |
74 |
A99 |
86 |
84 |
80 |
80 |
80 |
80 |
Note: * Background concentrations are included.
1-hr NO2 criteria
(AQO): 300 mg m-3
Table 3.17 Predicted
Cumulative Maximum 24-hour Average NO2 Concentrations at the
Representative ASRs at Different Elevations
ASRs |
Predicted 24-hour
averaged Concentration (mg m-3) * |
|||||
1.5m AGL |
5m AGL |
10m AGL |
20m AGL |
30m AGL |
40m AGL |
|
A25 |
73 |
71 |
68 |
68 |
68 |
68 |
A26 |
64 |
64 |
64 |
64 |
64 |
64 |
A27 |
65 |
64 |
64 |
64 |
64 |
64 |
A28 |
66 |
65 |
64 |
64 |
64 |
64 |
A29 |
64 |
64 |
63 |
63 |
63 |
63 |
A30 |
65 |
65 |
64 |
64 |
64 |
64 |
A31 |
67 |
66 |
65 |
65 |
65 |
65 |
A32 |
66 |
66 |
65 |
65 |
65 |
65 |
A33 |
64 |
63 |
63 |
63 |
63 |
63 |
A34 |
63 |
63 |
62 |
62 |
62 |
62 |
A35 |
65 |
64 |
64 |
64 |
64 |
64 |
A36 |
71 |
70 |
68 |
68 |
68 |
68 |
A37 |
71 |
68 |
66 |
66 |
66 |
66 |
A38 |
72 |
70 |
68 |
68 |
68 |
68 |
A39 |
71 |
71 |
70 |
70 |
70 |
69 |
A40 |
85 |
83 |
78 |
78 |
78 |
78 |
A41 |
83 |
82 |
79 |
79 |
79 |
78 |
A42 |
86 |
84 |
80 |
80 |
79 |
79 |
A43 |
85 |
84 |
80 |
79 |
78 |
77 |
A44 |
101 |
94 |
85 |
81 |
76 |
73 |
A45 |
103 |
94 |
83 |
79 |
76 |
76 |
A46 |
100 |
93 |
82 |
78 |
76 |
76 |
A47 |
90 |
87 |
81 |
78 |
75 |
74 |
A48 |
80 |
79 |
76 |
75 |
74 |
72 |
A49 |
77 |
76 |
74 |
73 |
72 |
72 |
A50 |
111 |
109 |
103 |
87 |
73 |
66 |
A51 |
135 |
131 |
120 |
98 |
80 |
73 |
A52 |
104 |
103 |
98 |
86 |
74 |
73 |
A53 |
133 |
128 |
116 |
87 |
70 |
70 |
A54 |
72 |
70 |
69 |
69 |
69 |
68 |
A55 |
67 |
66 |
66 |
66 |
66 |
66 |
A56 |
69 |
64 |
63 |
63 |
63 |
63 |
A57 |
71 |
67 |
65 |
65 |
65 |
65 |
A58 |
71 |
67 |
66 |
66 |
66 |
66 |
A59 |
71 |
68 |
66 |
66 |
66 |
66 |
A60 |
69 |
66 |
65 |
65 |
65 |
65 |
A61 |
69 |
66 |
65 |
65 |
65 |
65 |
A62 |
68 |
66 |
65 |
65 |
65 |
65 |
A63 |
64 |
64 |
64 |
64 |
64 |
64 |
A64 |
64 |
64 |
63 |
63 |
63 |
63 |
A65 |
63 |
63 |
63 |
63 |
63 |
63 |
A66 |
66 |
66 |
66 |
66 |
66 |
66 |
A70 |
63 |
63 |
62 |
62 |
62 |
62 |
A71 |
65 |
64 |
64 |
64 |
64 |
64 |
A73 |
75 |
69 |
66 |
66 |
66 |
66 |
A76 |
69 |
67 |
65 |
65 |
65 |
65 |
A81 |
69 |
67 |
66 |
66 |
66 |
66 |
A91 |
64 |
65 |
66 |
66 |
66 |
66 |
A92 |
63 |
63 |
63 |
63 |
63 |
63 |
A93 |
66 |
66 |
65 |
65 |
65 |
65 |
A94 |
65 |
65 |
65 |
65 |
65 |
65 |
A95 |
64 |
64 |
64 |
64 |
64 |
64 |
A96 |
63 |
63 |
63 |
63 |
63 |
63 |
A97 |
63 |
63 |
63 |
63 |
63 |
63 |
A98 |
64 |
63 |
63 |
63 |
63 |
63 |
A99 |
67 |
67 |
65 |
65 |
65 |
65 |
Note: * Background concentrations are included.
24-hr NO2 criteria
(AQO): 150 mg m-3
Table 3.18 Predicted
Cumulative Maximum 24-hour Average RSP Concentrations at the Representative
ASRs at Different Elevations
ASRs |
Predicted 24-hour
averaged Concentration (mg m-3) * |
|||||
1.5m AGL |
5m AGL |
10m AGL |
20m AGL |
30m AGL |
40m AGL |
|
A25 |
59 |
58 |
58 |
58 |
58 |
58 |
A26 |
57 |
57 |
57 |
57 |
57 |
57 |
A27 |
57 |
57 |
56 |
56 |
56 |
56 |
A28 |
57 |
57 |
57 |
57 |
57 |
57 |
A29 |
57 |
56 |
56 |
56 |
56 |
56 |
A30 |
57 |
57 |
57 |
57 |
57 |
57 |
A31 |
57 |
57 |
57 |
57 |
57 |
57 |
A32 |
57 |
57 |
57 |
57 |
57 |
57 |
A33 |
57 |
56 |
56 |
56 |
56 |
56 |
A34 |
56 |
56 |
56 |
56 |
56 |
56 |
A35 |
57 |
57 |
57 |
57 |
57 |
57 |
A36 |
59 |
58 |
58 |
58 |
58 |
58 |
A37 |
59 |
58 |
57 |
57 |
57 |
57 |
A38 |
59 |
59 |
58 |
58 |
58 |
58 |
A39 |
59 |
59 |
59 |
59 |
58 |
58 |
A40 |
62 |
62 |
61 |
61 |
61 |
60 |
A41 |
62 |
62 |
61 |
61 |
61 |
61 |
A42 |
63 |
62 |
61 |
61 |
61 |
61 |
A43 |
63 |
63 |
62 |
61 |
61 |
60 |
A44 |
69 |
66 |
63 |
62 |
61 |
59 |
A45 |
69 |
66 |
63 |
61 |
60 |
60 |
A46 |
68 |
66 |
62 |
61 |
60 |
60 |
A47 |
65 |
64 |
62 |
61 |
60 |
60 |
A48 |
62 |
61 |
60 |
60 |
60 |
59 |
A49 |
61 |
60 |
60 |
60 |
59 |
59 |
A50 |
71 |
70 |
69 |
64 |
60 |
57 |
A51 |
78 |
77 |
74 |
67 |
61 |
59 |
A52 |
69 |
69 |
67 |
63 |
60 |
59 |
A53 |
78 |
76 |
73 |
64 |
59 |
59 |
A54 |
59 |
59 |
58 |
58 |
58 |
58 |
A55 |
58 |
57 |
57 |
57 |
57 |
57 |
A56 |
58 |
57 |
56 |
56 |
56 |
56 |
A57 |
59 |
58 |
57 |
57 |
57 |
57 |
A58 |
59 |
58 |
57 |
57 |
57 |
57 |
A59 |
59 |
58 |
57 |
57 |
57 |
57 |
A60 |
58 |
57 |
57 |
57 |
57 |
57 |
A61 |
58 |
58 |
57 |
57 |
57 |
57 |
A62 |
58 |
57 |
57 |
57 |
57 |
57 |
A63 |
57 |
57 |
57 |
57 |
57 |
57 |
A64 |
57 |
57 |
57 |
57 |
57 |
56 |
A65 |
57 |
57 |
57 |
56 |
56 |
56 |
A66 |
57 |
57 |
57 |
57 |
57 |
57 |
A70 |
56 |
56 |
56 |
56 |
56 |
56 |
A71 |
57 |
57 |
56 |
56 |
56 |
56 |
A73 |
60 |
58 |
57 |
57 |
57 |
57 |
A76 |
58 |
58 |
57 |
57 |
57 |
57 |
A81 |
58 |
58 |
57 |
57 |
57 |
57 |
A91 |
57 |
57 |
58 |
58 |
58 |
58 |
A92 |
56 |
56 |
56 |
56 |
56 |
56 |
A93 |
57 |
57 |
57 |
57 |
57 |
57 |
A94 |
57 |
57 |
57 |
57 |
57 |
57 |
A95 |
56 |
56 |
56 |
56 |
56 |
56 |
A96 |
56 |
56 |
56 |
56 |
56 |
56 |
A97 |
57 |
57 |
56 |
56 |
56 |
56 |
A98 |
57 |
57 |
56 |
56 |
56 |
56 |
A99 |
58 |
57 |
57 |
57 |
57 |
57 |
Note: * Background concentrations are included.
24-hr RSP criteria (AQO): 180 mg m-3
Vehicular Emission Impact (Inside the
Tunnel/deckover)
·
Strictly limit the truck speed on site to
below 10 km per hour and water spraying to keep the haul roads in wet
condition;
·
Watering during excavation and material handling;
·
Provision of vehicle wheel and body washing
facilities at the exit points of the site, combined with cleaning of public
roads where necessary; and
·
Tarpaulin covering of all dusty vehicle loads
transported to, from and between site locations.
Traffic Emission Impact
Operational Phase
Operational Phase