Construction Activities undertaken

·           Pre-drilling Works at Portion 1B and 1D

·           Socket H-Pile (Landscaped Deck and Bridges) at Portion 1B and 1D

·           Noise Barrier C02, C03 & S01 (along Lin Cheung Road) at Portion 1E

·           Bridge Deck Construction at Bridge C Deck 3 and Bridge B Deck 2 in Portion 1E and 1B

·           Bridge Deck Construction at Bridge C2 Deck 4 in Portion 1B

·           Bridge Deck Construction at Bridge B2 Deck 3 in Portion 1B

·           Vent Adit Ch 60~90 at Zone 2 in Portion 1E

·           Road D Structure II Construction in Portion 1E

·           Vent. Adit Ch 175~240 at Zone 4B, 4C and A1 at Portion 1E

·           Parapet Wall Construction at Bridge G in Portion 1B

·           Abutment Wall Construction at Slip Road E in Portion 1B

·           Slip Road E including Construction of New U-trough in Portion 1A

·           Subway Construction at Portion 1B

·           Pile Cap at Segments 1 & 2 including B2P4 & C2P5 in Portion 1B

·           Pile Cap at Segment 3 including B2P5 & C2P6 in Portion 1D

·           Road slab, Upstand Wall & Column at Segment 4 in Portion 1D

·           Landscaped Construction at Segment 10 in Portion 1F

·           Landscaped Construction at Segment 11 in Portion 1F

·           Vent Adit and Road Slab at Segment 12 in Portion 1F

·           Reinforced Concrete Works for Escape Route 1 and 2 in Portion 1F

·          Pile Cap, Wall and Column Construction along Hoi Wang Road (Segments 5, 6, 7, 8 and 9) at Portion 1D

·           Landscaped Deck Construction at Segments 6 in Portion 1D

W-N1A, W-P11, W-N18, W-N25A

6 times

W-A1

W-A6

6 times

6 times

W-A1, W-A6

18 times

·          Remaining Socket H-Pile at Segments 5, 8b and 9 at Portion 1B and 1D

·          Construction of Noise Barrier S01 (along Lin Cheung Road) West Side at Portion 1E

·          Noise Barrier C02 Panel and Road works at Portion 1E

·          Bridge Deck Construction at Bridge C2 (Deck 4) and B2 (Deck 3) in Portio 1E and 1B

·          Reinforced Concrete works at Vent Adit Ch 60~90 at Zone 2 in Portion 1E

·          Road D Structure II Construction at Portion 1E

·          Reinforced Concrete works at Vent Adit Ch 175~240 at Zone 4B and Excavation and Lateral Support Works and Excavation at Vent. Adit Ch 175~240 at Zone 4C and A1 in Portion 1E

·          Parapet Wall Construction at Bridge G in Portion 1B

·          Abutment Wall and Backfilling at Slip Road E in Portion 1A and 1B

·          Slip Road E Construction at Portion 1A

·          Reinforced Concrete Works for Escape Route Staircase No. 1 to 2 at Portion 1F and 10

·          Excavation and Lateral Support and Excavation Works prior to Subway Construction at Portion 1B

·          Pile Cap, Road Slab, Upstand Wall and Column Construction at Segment 1 to 4 in Portion 1B and 1D

·          Upstand Wall, Column and Landscaped Deck Construction at Segment 10 at segment 1F

·          Landscaped Deck Construction at Segment 11 at Portion 1F

·          Reinforced Concrete Works for Vent. Adit at Segment 12 Ch 410~465 in Portion 1F

·          Piling Works at Segment 5, 8 and 9 in PortionD

·          Ground Beam, Parapet Wall and Column construction at Segment 5 in Portion D

·          Landscaped Deck Construction at Segment 6 in Portion 1D

Construction Activities undertaken

·           Pre-drilling Works at Portion 1B and 1D

·           Socket H-Pile (Landscaped Deck and Bridges) at Portion 1B and 1D

·           Noise Barrier C02, C03 & S01 (along Lin Cheung Road) at Portion 1E

·           Bridge Deck Construction at Bridge C Deck 3 and Bridge B Deck 2 in Portion 1E and 1B

·           Bridge Deck Construction at Bridge C2 Deck 4 in Portion 1B

·           Bridge Deck Construction at Bridge B2 Deck 3 in Portion 1B

·           Vent Adit Ch 60~90 at Zone 2 in Portion 1E

·           Road D Structure II Construction in Portion 1E

·           Vent. Adit Ch 175~240 at Zone 4B, 4C and A1 at Portion 1E

·           Parapet Wall Construction at Bridge G in Portion 1B

·           Abutment Wall Construction at Slip Road E in Portion 1B

·           Slip Road E including Construction of New U-trough in Portion 1A

·           Subway Construction at Portion 1B

·           Pile Cap at Segments 1 & 2 including B2P4 & C2P5 in Portion 1B

·           Pile Cap at Segment 3 including B2P5 & C2P6 in Portion 1D

·           Road slab, Upstand Wall & Column at Segment 4 in Portion 1D

·           Landscaped Construction at Segment 10 in Portion 1F

·           Landscaped Construction at Segment 11 in Portion 1F

·           Vent Adit and Road Slab at Segment 12 in Portion 1F

·           Reinforced Concrete Works for Escape Route 1 and 2 in Portion 1F

·          Pile Cap, Wall and Column Construction along Hoi Wang Road (Segments 5, 6, 7, 8 and 9) at Portion 1D

·           Landscaped Deck Construction at Segments 6 in Portion 1D

From

To

Environmental Permit

EP-457/2013/D

15 Jun 2021

End of Project

Valid

-

Wastewater Discharge License

WT00033736-2019

1 May 2020

31 May 2024

Valid

-

Notification of Construction Works under the Air Pollution Control (Construction Dust) Regulation

438845

31 Oct 2018

End of Project

Notified

-

Chemical Waste Producer Registration

WPN5213-229-B2527-02

31 Oct 2018

End of Project

Valid

-

Billing Account for Disposal of Construction Waste

7032430

2 Nov 2018

End of Project

Valid

-

Disposal of Special Waste at Landfills Admission Ticket

Nil

-

-

-

-

Collection of Public Fill at Public Fill

TM38-HY/2014/20-03

1 Jan 2023

30 Jun 2023

Valid

-

Construction Noise Permit

GW-RE0278-23

15 Mar 2023

14 Jun 2023

Valid

General Site Activities

GW-RE0325-23

28 Mar 2023

31 May 2023

Expired during reporting month

Portal Frame Erection at Lin Cheung Road

GW-RE0329-23

30 Apr 2023

18 Jun 2023

Valid

Road Marking Works at West Kowloon Highway Slip Road

GW-RE0331-23

29 Apr 2023

11 Jun 2023

Valid

Resurfacing Works at West Kowloon Highway Slip Road

GW-RE0451-23

15 May 2023

19 July 2023

Valid

Portal Frame Removal at Lin Cheung Road Northbound

GW-RE0483-23

5 May 2023

10 June 2023

Valid

Sign Gantry Modification at Hoi Wang Road Southbound near Hoi Ting Road

GW-RE0489-23

5 May 2023

10 June 2023

Valid

Sign Gantry Modification at Hoi Wang Road Southbound near Jordan Road

EP Condition

(EP-457/2013/D)

Submission

Submission date

Condition 3.4

Monthly EM&A Report (Apr 2023)

12 May 2023

·  Pre-drilling Works at Portion 1B and 1D

· 99% completion

·  Socket H-Pile (Landscaped Deck and Bridges) at Portion 1B and 1D

· 96% completion

·  Noise Barrier C02, C03 & S01 (along Lin Cheung Road) at Portion 1E

· 95% completion

·  Bridge Deck Construction at Bridge C Deck 3 and Bridge B Deck 2 in Portion 1E and 1B

· 55% completion

·  Bridge Deck Construction at Bridge C2 Deck 4 in Portion 1B

· 40% completion

·  Bridge Deck Construction at Bridge B2 Deck 3 in Portion 1B

· 20% completion

·  Vent Adit Ch 60~90 at Zone 2 in Portion 1E

· 15% completion

·  Road D Structure II Construction in Portion 1E

· 70% completion

·  Vent. Adit Ch 175~240 at Zone 4B, 4C and A1 at Portion 1E

· 32% completion

·  Parapet Wall Construction at Bridge G in Portion 1B

· 90% completion

·  Abutment Wall Construction at Slip Road E in Portion 1B

· 80% completion

·  Slip Road E including Construction of New U-trough in Portion 1A

·  20% completion

·  Subway Construction at Portion 1B

·  10% completion

·  Pile Cap at Segments 1 & 2 including B2P4 & C2P5 in Portion 1B

·  50% completion

·  Pile Cap at Segment 3 including B2P5 & C2P6 in Portion 1D

·  35% completion

·  Road slab, Upstand Wall & Column at Segment 4 in Portion 1D

·  65% completion

·  Landscaped Construction at Segment 10 in Portion 1F

·  10% completion

·  Landscaped Construction at Segment 11 in Portion 1F

·  35% completion

·  Vent Adit and Road Slab at Segment 12 in Portion 1F

·  65% completion

·  Reinforced Concrete Works for Escape Route 1 and 2 in Portion 1F

·  20% completion

·  Pile Cap, Wall and Column Construction along Hoi Wang Road (Segments 5, 6, 7, 8 and 9) at Portion 1D

·  90% completion

·  Landscaped Deck Construction at Segments 6 in Portion 1D

·  85% completion

Monitoring Location

Location ID

Latitude

Longitude

Yau Ma Tei Catholic Primary School (Hoi Wang Road)*

W-A1/ W-N1A

22.31345

114.16409

Man Cheong Building

W-A6

22.308185

114.166033

Hydan Place

W-N18

22.30858

114.170185

Prosperous Garden Block 1

W-N25A

22.309846

114.168072

The Coronation Tower 1

W-P11

22.309824

114.165616

Remark: *The High Volume Sampler (HVS) at dust impact monitoring location W-A1 had been relocated on 6 Sep 2022 due to installation work of PV panel at Yau Ma Tei Catholic Primary School. The relocation of HVS was approved by ER and agreed with IEC.

Monitoring Parameter

Monitoring Equipment

Serial Number

Date of Calibration

1-hour TSP

LD-5R Digital Dust Indicator

0Z4545

1 Mar 2023

LD-5R Digital Dust Indicator

992820

1 Mar 2023

PC-3A(E) Digital Dust Indicator

JC2002225

9 Oct 2022

PC-3A(E) Digital Dust Indicator

JC2110287

9 Oct 2022

24-hour TSP

TE-5170X High Volume Sampler

1084

3 May 2023 and 19 May 2023

TE-5170X High Volume Sampler

1050

3 May 2023 and 19 May 2023

TE-5025A Calibration Kit

3465

28 Jun 2022

Monitoring Equipment

Serial Number

Date of Calibration

Nti XL2 Sound Level Meter

A2A-13661-E0

22 Aug 2022

Rion NC-74 Sound Level Calibrator

35124527

2 Nov 2022

Air Quality Monitoring Station

Dust Monitoring
Station

W-A1

Yau Ma Tei Catholic Primary School (Hoi Wang Road)

W-A6

Man Cheong Building

Noise

Monitoring Station

Identified Noise

Monitoring Station

Type of Measurement

W-N1A

Yau Ma Tei Catholic Primary School (Hoi Wang Road)

Façade

W-N18

Hydan Place

Façade

W-N25A

Prosperous Garden Block 1

Façade

W-P11

The Coronation Tower 1

Façade

Dust

1-hour continuous measurement

1-hour TSP

3 times per six days

Dust

24-hour continuous sampling

24-hour TSP

Once per six days

Noise

30-minute continuous measurement

Leq 30 min,

L10 and L90 as reference.

Once per week (0700-1900)

Remarks:

1.      # If works are to be carried out during restricted hours, the conditions in the construction noise permit by the Noise Control Authority have to be followed.

2.      *No examination was scheduled at Yau Ma Tei Catholic Primary School on the monitoring dates. The limit level of W-N1A in May 2023 would be 70 dB(A).

Complaint Received via Project Hotline

Complaint Received via 1823 or from other government departments

Contractor notify ER, ET and IEC

ER notify Contractor, ET and IEC

Contractor log complaint and date of receipt onto the complaint database. Contractor, ER and ET to conduct investigation of complaint

If complaint is considered not valid

If complaint is found valid

ET or ER to reply the complainant if necessary

Contractor to identify and implement remedial measures in consultation with the IEC, ET and ER.

The ER, ET and IEC to review the effectiveness of the Contractor’s remedial measures and the updated situation; ET to undertake additional monitoring and audit to verify the situation if necessary, and oversee that circumstances leading to the complaint do not recur. ER to conduct further inspection as necessary.   

 If the complaint is referred by the EPD, the Contractor to prepare interim report on the status of the complaint investigation and follow-up actions stipulated above, including the details of the remedial measures and additional monitoring identified or already taken, for submission to EPD within the time frame assigned by the EPD

The ET to record the details of the complaint, results of the investigation, subsequent actions taken to address the complaint and updated situation including the effectiveness of the remedial measures, supported by regular and additional monitoring results in the monthly EM&A reports

Date

Environmental Observations

Follow-up Status

4 May 2023

1.         Drip tray should be provided for chemical containers at Segment 11.

2.         General refuse should be cleaned regularly near Segment 10.

1.         Drip tray had been provided.

2.         General refuse had been cleaned up.

11 May 2023

1.         Stagnant water at the trench of Vent Adit and Lin Cheung Road should be removed.

1.         The area with stagnant water had been backfilled.

18 May 2023

1.         Oil strain was observed on ground near Gate 1.

2.         Chemical containers should be placed on drip tray at Landscape Deck.

1.         The floor had been cleaned.

2.         Drip tray had been provided.

25 May 2023

1.         Housekeeping should be enhanced near Road D.

2.         Drip tray should be provided for chemical containers at Portion 1F Road Slab.

1.         Site tidiness had been improved.

2.         Drip tray had been provided.

·          Remaining Socket H-Pile at Segments 5, 8b and 9 at Portion 1B and 1D

·          Construction of Noise Barrier S01 (along Lin Cheung Road) West Side at Portion 1E

·          Noise Barrier C02 Panel and Road works at Portion 1E

·          Bridge Deck Construction at Bridge C2 (Deck 4) and B2 (Deck 3) in Portio 1E and 1B

·          Reinforced Concrete works at Vent Adit Ch 60~90 at Zone 2 in Portion 1E

·          Road D Structure II Construction at Portion 1E

·          Reinforced Concrete works at Vent Adit Ch 175~240 at Zone 4B and Excavation and Lateral Support Works and Excavation at Vent. Adit Ch 175~240 at Zone 4C and A1 in Portion 1E

·          Parapet Wall Construction at Bridge G in Portion 1B

·          Abutment Wall and Backfilling at Slip Road E in Portion 1A and 1B

·          Slip Road E Construction at Portion 1A

·          Reinforced Concrete Works for Escape Route Staircase No. 1 to 2 at Portion 1F and 10

·          Excavation and Lateral Support and Excavation Works prior to Subway Construction at Portion 1B

·          Pile Cap, Road Slab, Upstand Wall and Column Construction at Segment 1 to 4 in Portion 1B and 1D

·          Upstand Wall, Column and Landscaped Deck Construction at Segment 10 at segment 1F

·          Landscaped Deck Construction at Segment 11 at Portion 1F

·          Reinforced Concrete Works for Vent. Adit at Segment 12 Ch 410~465 in Portion 1F

·          Piling Works at Segment 5, 8 and 9 in PortionD

·          Ground Beam, Parapet Wall and Column construction at Segment 5 in Portion D

·           Landscaped Deck Construction at Segment 6 in Portion 1D

ACTION LEVEL

1.Exceedance for one sample

1. Identify source, investigate the causes of exceedance and propose remedial measures;

2. Inform IEC and ER;

3. Repeat measurement to confirm finding;

4. Increase monitoring frequency to daily.

1. Check monitoring data submitted by ET;

2. Check Contractor’s working method.

1. Notify Contractor.

1. Rectify any unacceptable practice;

2. Amend working methods if appropriate.

2.Exceedance for two or more consecutive samples

1. Identify source;

2. Inform IEC and ER;

3. Advise the ER on the effectiveness of the proposed remedial measures;

4. Repeat measurements to confirm findings;

5. Increase monitoring frequency to daily;

6. Discuss with IEC and Contractor on remedial actions required;

7. If exceedance continues, arrange meeting with IEC and ER;

8. If exceedance stops, cease additional monitoring.

1. Check monitoring data submitted by ET;

2. Check Contractor’s working method;

3. Discuss with ET and Contractor on possible remedial measures;

4. Advise the ET on the effectiveness of the proposed remedial measures;

5. Supervise Implementation of remedial measures.

1. Confirm receipt of notification of failure in writing;

2. Notify Contractor;

3. Ensure remedial measures properly implemented.

1. Submit proposals for remedial to ER within 3 working days of notification;

2. Implement the agreed proposals;

3. Amend proposal if appropriate.

LIMIT LEVEL

1.Exceedance for one sample

1. Identify source, investigate the causes of exceedance and propose remedial measures;

2. Inform ER, Contractor and

EPD;

3. Repeat measurement to confirm finding;

4. Increase monitoring frequency to daily;

5. Assess effectiveness of Contractor’s remedial actions and keep IEC, EPD and ER informed of the results.

1. Check monitoring data submitted by ET;

2. Check Contractor’s working method;

3. Discuss with ET and Contractor on possible remedial measures;

4. Advise the ER on the effectiveness of the proposed remedial measures;

5. Supervise implementation of remedial measures.

1. Confirm receipt of notification of failure in writing;

2. Notify Contractor;

3. Ensure remedial measures properly implemented.

1. Take immediate action to avoid further exceedance;

2. Submit proposals for remedial actions to IEC

within 3 working days of notification;

3. Implement the agreed proposals;

4. Amend proposal if appropriate.

2.Exceedance for two or more consecutive samples

1. Notify IEC, ER, Contractor and EPD;

2. Identify source;

3. Repeat measurement to confirm findings;

4. Increase monitoring frequency to daily;

5. Carry out analysis of Contractor’s working procedures to determine possible mitigation to be implemented;

6. Arrange meeting with IEC and ER to discuss the remedial actions to be taken;

7. Assess effectiveness of Contractor’s remedial actions and keep IEC, EPD and ER informed of the results;

8. If exceedance stops, cease additional monitoring.

1. Discuss amongst ER, ET, and Contractor on the potential remedial actions;

2. Review Contractor’s remedial actions whenever necessary to assure their effectiveness and advise the ER accordingly;

3. Supervise the implementation of remedial measures.

1. Confirm receipt of notification of failure in writing;

2. Notify Contractor;

3. In consultation with the IEC, agree with the Contractor on the remedial measures to be implemented;

4. Ensure remedial measures properly implemented;

5. If exceedance continues, consider what portion of the work is responsible and instruct the Contractor to stop that portion of work until the exceedance is abated.

1. Take immediate action to avoid further exceedance;

2. Submit proposals for remedial actions to IEC within 3 working days of notification;

3. Implement the agreed proposals;

4. Resubmit proposals if problem still not under control;

5. Stop the relevant portion of works as determined by the ER until the exceedance is abated.

Action Level

1. Identify source, investigate the causes of exceedance and propose remedial measures;

2. Notify IEC and Contractor;

3. Report the results of investigation to the IEC, ER and Contractor;

4. Discuss with the Contractor and formulate remedial measures;

5. Increase monitoring frequency to check mitigation effectiveness.

1.Review the analysed results submitted by the ET;

2. Review the proposed remedial measures by the Contractor and advise the ER accordingly;

3. Supervise the implementation of remedial measures.

1. Confirm receipt of notification of failure in writing;

2. Notify Contractor;

3. Require Contractor to propose remedial measures for the analysed noise problem;

4. Ensure remedial measures are properly implemented

1. Submit noise mitigation proposals to IEC;

2. Implement noise mitigation proposals.

Limit Level

1. Identify source;

2. Inform IEC, ER, EPD and Contractor;

3. Repeat measurements to confirm findings;

4. Increase monitoring frequency;

5. Carry out analysis of Contractor’s working procedures to determine possible mitigation to be implemented;

6. Inform IEC, ER and EPD the causes and actions taken for the exceedances;

7. Assess effectiveness of Contractor’s remedial actions and keep IEC, EPD and ER informed of the results;

8. If exceedance stops, cease additional monitoring.

1. Discuss amongst ER, ET, and Contractor on the potential remedial actions;

2. Review Contractors remedial actions whenever necessary to assure their effectiveness and advise the ER accordingly;

3. Supervise the implementation of remedial measures.

1.Confirm receipt of notification of failure in writing;

2. Notify Contractor;

3. Require Contractor to propose remedial measures for the analysed noise problem;

4. Ensure remedial measures properly implemented;

5. If exceedance continues, consider what portion of the work is responsible and instruct the Contractor to stop that portion of work until the exceedance is abated.

1. Take immediate action to avoid further exceedance;

2. Submit proposals for remedial actions to IEC  within 3 working days of notification;

3. Implement the agreed proposals;

4. Resubmit proposals if problem still not under control;

5. Stop the relevant portion of works as determined by the ER until the exceedance is abated.

Construction Dust Impact

S6.9.1.1

D1

The contractor shall follow the procedures and requirements given in the Air Pollution Control (Construction Dust) Regulation

Minimize dust impact at the nearby sensitive receivers

Contractor

All construction sites

Construction stage

·    APCO

·    To control the dust impact To meet HKAQO and TM-EIA criteria

·    Implemented

S4.3.10

D2

·  Mitigation measures in form of regular watering under a good site practice should be adopted.  Watering once per hour on exposed worksites and haul road should be conducted to achieve dust removal efficiencies of 91.7%.  While the above watering frequencies are to be followed, the extent of watering may vary depending on actual site conditions but should be sufficient to maintain an equivalent intensity of no less than 1.3 L/m² to achieve the dust removal efficiency.

Minimize dust impact at the nearby sensitive receivers

Contractor

All construction sites

Construction stage

·   APCO

·   To control the dust impact To meet HKAQO and TM-EIA criteria

·   Implemented

S4.3.10

D3

·       Proper watering at exposed spoil should be undertaken throughout the construction phase;

·       Any excavated or stockpile of dusty material should be covered entirely by impervious sheeting or sprayed with water to maintain the entire surface wet and then removed or backfilled or reinstated where practicable within 24 hours of the excavation or unloading;

·       Any dusty materials remaining after a stockpile is removed should be wetted with water and cleared from the surface of roads;

·       A stockpile of dusty material should not be extended beyond the pedestrian barriers, fencing or traffic cones;

·       The load of dusty materials on a vehicle leaving a construction site should be covered entirely by impervious sheeting to ensure that the dusty materials do not leak from the vehicle.

·       Where practicable, vehicle washing facilities with high pressure water jet should be provided at every discernible or designated vehicle exit point.  The area where vehicle washing takes place and the road section between the washing facilities and the exit point should be paved with concrete, bituminous materials or hardcores;

·       When there are open excavation and reinstatement works, hoarding of not less than 2.4m high should be provided and properly maintained as far as practicable along the site boundary with provision for public crossing.  Good site practice shall also be adopted by the Contractor to ensure the conditions of the hoardings are properly maintained throughout the construction period;

·       The portion of any road leading only to construction site that is within 30m of a vehicle entrance or exit should be kept clear of dusty materials;

·       Surfaces where any pneumatic or power-driven drilling, cutting, polishing or other mechanical breaking operation takes place should be sprayed with water or a dust suppression chemical continuously;

·       Any area that involves demolition activities should be sprayed with water or a dust suppression chemical immediately prior to, during and immediately after the activities so as to maintain the entire surface wet;

·      Any skip hoist for material transport should be totally enclosed by impervious sheeting;

·      Every stock of more than 20 bags of cement or dry-pulverised fuel ash (PFA) should be covered entirely by impervious sheeting or placed in an area sheltered on the top and the 3 sides;

·      Loading, unloading, transfer, handling or storage of bulk cement or dry PFA should be carried out in a totally enclosed system or facility, and any vent or exhaust should be fitted with an effective fabric filter or equivalent air pollution control system

·      Exposed earth should be properly treated by compaction, turfing, hydroseeding, vegetation planting or sealing with latex, vinyl, bitumen, shotcrete or other suitable surface stabilizer within six months after the last construction activity on the construction site or part of the construction site where the exposed earth lies.

Minimize dust impact at the nearby sensitive receivers

Contractor

All construction sites

Construction stage

·   APCO

·   To control the dust impact To meet HKAQO and TM-EIA criteria

·   Implemented

S4.3.10

D6

Implement regular dust monitoring under EM&A programme during the construction stage.

Monitoring of dust impact

Contractor

Selected rep. dust monitoring station

Construction stage

·   TM-EIA

·   Implemented

Construction Noise (Airborne)

S5.4.1

N1

Implement the following good site practices:

·   Only well-maintained plant should be operated on-site and plant should be serviced regularly during the construction programme;

·   Machines and plant (such as trucks, cranes) that may be in intermittent use should be shut down between work periods or should be throttled down to a minimum;

·   Plant known to emit noise strongly in one direction, where possible, be orientated so that the noise is directed away from nearby NSRs;

·   Silencers or mufflers on construction equipment should be properly fitted and maintained during the construction works;

·   Mobile plant should be sited as far away from NSRs as possible and practicable;

·   Material stockpiles, mobile container site office and other structures should be effectively utilized, where practicable, to screen noise from on-site construction activities.

Control construction airborne noise

Contractor

All construction sites

Construction stage

·    Annex 5, TM-EIAO

·    Implemented

S5.4.1

N2

Install temporary hoarding located on the site boundaries between noisy construction activities and NSRs.  The conditions of hoardings shall be properly maintained throughout the construction period.

Reduce the construction noise levels at low-level zone of NSRs through partial screening

Contractor

All construction sites

Construction stage

·   Annex 5, TM-EIAO

·   Implemented

S5.4.1

N3

Install movable noise barriers (typical design is wooden framed barrier with a small-cantilevered on a skid footing with 25mm thick internal sound absorptive lining), acoustic mat or full enclosure, screen the noisy plants including air compressors, generators and handheld breakers, etc.

Sreen the noisy plant items to be used at all construction sites

Contractor

All construction sites where practicable

Construction stage

·   Annex 5, TM-EIAO

·   Implemented

S5.4.1

N4

Use ‘Quiet plant’

Reduce the noise levels of plant items

Contractor

All construction sites where practicable

Construction stage

·   Annex 5, TM-EIAO

·   Implemented

S5.4.1

N5

Loading/ unloading activities should be carried out inside the full enclosure of mucking out points.

Reduce the noise levels of loading/ unloading activities

Contractor

Mucking out locations

Construction stage

·   Annex 5, TM-EIAO

·   Implemented

S5.4.1

N6

Sequencing operation of construction plants where practicable.

Operate sequentially within the same work site to reduce the construction airborne noise

Contractor

All construction sites where practicable

Construction stage

·   Annex 5, TM-EIAO

·   Implemented

S5.4.1

N7

Implement a noise monitoring programme under EM&A programme.

Monitor the construction noise levels at the selected representative locations

Contractor

Selected rep. noise monitoring station

Construction stage

·   TM-EIAO

·   Implemented

Water Quality (Construction Phase)

S6.9.1.1

W1

In accordance with the Practice Note for Professional Persons on Construction Site Drainage, Environmental Protection Department, 1994 (ProPECC PN1/94), construction phase mitigation measures shall include the following:

Construction Runoff

·    At the start of site establishment, perimeter cut-off drains to direct off-site water around the site should be constructed with internal drainage works and erosion and sedimentation control facilities implemented.  Channels (both temporary and permanent drainage pipes and culverts), earth bunds or sand bag barriers should be provided on site to direct stormwater to silt removal facilities.  The design of the temporary on-site drainage system will be undertaken by the contractor prior to the commencement of construction;

·    The dikes or embankments for flood protection should be implemented around the boundaries of earthwork areas.  Temporary ditches should be provided to facilitate the runoff discharge into an appropriate watercourse, through a silt/ sediment trap.  The sediment/ silt traps should be incorporated in the permanent drainage channels to enhance deposition rates;

·    The design of efficient silt removal facilities should be based on the guidelines in Appendix A1 of ProPECC PN 1/94, which states that the retention time for silt/ sand traps should be 5 minutes under maximum flow conditions.  Sizes may vary depending upon the flow rate, but for a flow rate of 0.1 m³/s a sedimentation basin of 30 m³ would be required and for a flow rate of 0.5 m³/s the basin would be 150 m³.  The detailed design of the sand/ silt traps shall be undertaken by the contractor prior to the commencement of construction;   

·    All exposed earth areas should be completed and vegetated as soon as possible after earthworks have been completed, or alternatively, within 14 days of the cessation of earthworks where practicable.  Exposed slope surfaces should be covered by tarpaulin or other means;

·    The overall slope of the site should be kept to a minimum to reduce the erosive potential of surface water flows, and all traffic areas and access roads protected by coarse stone ballast.  An additional advantage accruing from the use of crushed stone is the positive traction gained during prolonged periods of inclement weather and the reduction of surface sheet flows;

·    All drainage facilities and erosion and sediment control structures should be regularly inspected and maintained to ensure proper and efficient operation at all times and particularly following rainstorms.  Deposited silt and grit should be removed regularly and disposed of by spreading evenly over stable, vegetated areas;

·    Measures should be taken to minimize the ingress of site drainage into excavations.  If the excavation of trenches in wet periods is necessary, they should be dug and backfilled in short sections wherever practicable.  Water pumped out from trenches or foundation excavations should be discharged into storm drains via silt removal facilities;

·    Open stockpiles of construction materials (for example, aggregates, sand and fill material) of more than 50m³ should be covered with tarpaulin or similar fabric during rainstorms.  Measures should be taken to prevent the washing away of construction materials, soil, silt or debris into any drainage system;

·    Manholes should always be adequately covered and temporarily sealed so as to prevent silt, construction materials or debris being washed into the drainage system and storm runoff being directed into foul sewers;

·    Precautions be taken at any time of year when rainstorms are likely, actions to be taken when a rainstorm is imminent or forecasted, and actions to be taken during or after rainstorms are summarized in Appendix A2 of ProPECC PN 1/94.  Particular attention should be paid to the control of silty surface runoff during storm events, especially for areas located near steep slopes;

·    All vehicles and plant should be cleaned before leaving a construction site to ensure no earth, mud, debris and the like is deposited by them on roads.  An adequately designed and site wheel washing facilities should be provided at every construction site exit where practicable.  Wash-water should have sand and silt settled out and removed at least on a weekly basis to ensure the continued efficiency of the process.  The section of access road leading to, and exiting from, the wheel wash bay to the public road should be paved with sufficient backfall toward the wheel wash bay to prevent vehicle tracking of soil and silty water to public roads and drains;

·    Oil interceptors should be provided in the drainage system downstream of any oil/ fuel pollution sources.  The oil interceptors should be emptied and cleaned regularly to prevent the release of oil and grease into the storm water drainage system after accidental spillage.  A bypass should be provided for the oil interceptors to prevent flushing during heavy rain;

·    Construction solid waste, debris and rubbish on site should be collected, handled and disposed of properly to avoid water quality impacts;

·    All fuel tanks and storage areas should be provided with locks and sited on sealed areas, within bunds of a capacity equal to 110% of the storage capacity of the largest tank to prevent spilled fuel oils from reaching water sensitive receivers nearby;

·    Adopt best management practices;

·    All earth works should be conducted sequentially to limit the amount of construction runoff generated from exposed areas during the wet season (April to December) as far as practicable.  

To minimize water quality impact from the construction site runoff and general construction activities

Contractor

All construction sites where practicable

Construction stage

·   Water Pollution Control Ordinance

·   ProPECC PN 1/94

·   TM-EIAO

·   TM-DSS

·   Implemented, deficiency rectified after observation

S6.9.1.2

W2

Tunneling Works and Underground Works

·   Cut-&-cover tunneling work should be conducted sequentially to limit the amount of construction runoff generated from exposed areas during the wet season (April to December) as far as practicable.

·   Uncontaminated discharge should pass through sedimentation tanks prior to off-site discharge;

·   The wastewater with a high concentration of SS should be treated (e.g. by sedimentation tanks with sufficient retention time) before discharge.  Oil interceptors would also be required to remove the oil, lubricants and grease from the wastewater;

·   Direct discharge of the bentonite slurry (as a result of D-wall) is not allowed.  It should be reconditioned and reused wherever practicable.  Temporary storage locations (typically a properly closed warehouse) should be provided on site for any unused bentonite that needs to be transported away after all the related construction activities area completed.  The requirements in ProPECC PN 1/94 should be adhered to in the handling and disposal of bentonite slurries.

To minimize construction water quality impact from tunneling works

Contractor

All tunneling portion

Construction stage

·   Water Pollution Control Ordinance

·   ProPECC PN 1/94

·   TM-DSS

·   TM-EIAO

·   N/A

S6.9.1.3

W3

Sewage Effluent

·    Portable chemical toilets and sewage holding tanks are recommended for handling the construction sewage generated by the workforce.  A licensed contractor should be employed to provide appropriate and adequate portable toilets and be responsible for appropriate disposal and maintenance.

To minimize water quality from sewage effluent

Contractor

All construction sites where practicable

Construction stage

·   Water Pollution Control Ordinance

·   TM-DSS

·   Implemented

S6.9.1.5

W4

Groundwater from Potential Contaminated Area:

·    No direct discharge of groundwater from contaminated areas should be adopted.

·    A discharge license under the WPCO through the Regional Office of EPD for groundwater discharge should be applied. Prior to the excavation works within these potentially contaminated areas, the groundwater quality should be reviewed during the process of discharge license application. The compliance to the Technical Memorandum on Standards for Effluents Discharged into Drainage on Sewerage Systems, Inland and Coastal Waters (TM-DSS) and the existence of prohibited substance should be confirmed. If the review results indicated that the groundwater to be generated from the excavation works would be contaminated, the contaminated groundwater should be either properly treated in compliance with the requirements of the TM-DSS or properly recharged into the ground.

·    If wastewater treatment is deployed, the wastewater treatment unit shall deploy suitable treatment process (e.g. oil interceptor / activated carbon) to reduce the pollution level to an acceptable standard and remove any prohibited substances (e.g. TPH) to undetectable range. All treated effluent from wastewater treatment plant shall meet the requirements as stated in TM-DSS and should be discharged into the foul sewers.

·    If groundwater recharging wells are deployed, recharging wells should be installed as appropriate for recharging the contaminated groundwater back into the ground. The recharging wells should be selected at places where the groundwater quality will not be affected by the recharge operation as indicated in the Section 2.3 of TM-DSS. The baseline groundwater quality shall be determined prior to the selection of the recharge wells, and submit a working plan (including the laboratory analytical results showing the quality of groundwater at the proposed recharge location(s) as well as the pollutant levels of groundwater to be recharged) to EPD for agreement. Pollution levels of groundwater to be recharged shall not be higher than pollutant levels of ambient groundwater at the recharge well. Prior to recharge, any prohibited substances such as TPH products should be removed as necessary by installing the petrol interceptor.

To minimize groundwater quality impact from contaminated area

Contractor

Excavation areas where contamination is found

Construction stage

·   Water Pollution Control Ordinance

·   TM-DSS

·   TM-EIAO

·   Implemented

S6.9.1.6

W6

Accidental Spillage

In order to prevent accidental spillage of chemicals, the following is recommended:

·        All the tanks, containers, storage area should be bunded and the locations should be locked as far as possible from the sensitive watercourse and stormwater drains;

·        The Contractor should register as a chemical waste producer if chemical wastes would be generated.  Storage of chemical waste arising from the construction activities should be stored with suitable labels and warnings.

Disposal of chemical wastes should be conducted in compliance with the requirements as stated in the Waste Disposal (Chemical Waste) (General) Regulation.

To minimize water quality impact from accidental spillage

Contractor

All construction site where practicable

Construction stage

·   Water Pollution Control Ordinance

·   ProPECC PN 1/94

·   TM-EIAO

·   TM-DSS

·   Implemented

Waste Management (Construction Waste)

S7.4.1

WM1

On-site sorting of C&D material

·    Geological assessment should be carried out by competent persons on site during excavation to identify materials which are not suitable to use as aggregate in structural concrete (e.g. volcanic rock, Aplite dyke rock, etc.).  Volcanic rock and Aplite dyke rock should be separated at the source sites as far as practicable and stored at designated stockpile area preventing them from delivering to crushing facilities.  The crushing plant operator should also be reminded to set up measures to prevent unsuitable rock from ending up at concrete batching plants and be turned into concrete for structural use.  Details regarding control measures at source site and crushing facilities should be submitted by the Contractor for the Engineer to review and agree.  In addition, site records should also be kept for the types of rock materials excavated and the traceability of delivery will be ensured with the implementation of Trip Ticket System and enforced by site supervisory staff as stipulated under DEVB TC(W) No. 6/2010 for tracking of the correct delivery to the rock crushing facilities for processing into aggregates.  Alternative disposal option for the reuse of volcanic rock and Aplite Dyke rock, etc. should be explored.

Separation of unsuitable rock from ending up at concrete batching plants and be turned into concrete for structural use

Contractor

All construction sites

Construction stage

·   DEVB (W) No. 6/2010

·   N/A

S7.5.1

WM2

Construction and Demolition Material

·    Maintain temporary stockpiles and reuse excavated fill material for backfilling and reinstatement;

·    Carry out on-site sorting;

·    Make provisions in the Contract documents to allow and promote the use of recycled aggregates where appropriate;

·    Adopt ‘selective demolition’ technique to demolish the existing structures and facilities with a view to recovering broken concrete effectively for recycling purpose, where possible;

·    Implement a trip-ticket system for each works contract to ensure that the disposal of C&D materials are properly documented and verified; and

·    Implement an enhanced Waste Management Plan similar to ETWBTC (Works) No. 19/2005 – “Environmental Management on Construction Sites” to encourage on-site sorting of C&D materials and to minimize their generation during the course of construction.

Good site practice to minimize the waste generation and recycle the C&D materials as far as practicable so as to reduce the amount for final disposal

Contractor

All construction sites

Construction stage

·   Land (Miscellaneous Provisions) Ordinance

·   Waste Disposal Ordinance

·   ETWB TCW No. 19/2005

·   Implemented

S7.5.1

WM3

C&D Waste

·    Standard formwork or pre-fabrication should be used as far as practicable in order to minimize the arising of C&D materials.  The use of more durable formwork or plastic facing for the construction works should be considered.  Use of wooden hoardings should not be used, as in other projects.  Metal hoarding should be used to enhance the possibility of recycling.  The purchasing of construction materials will be carefully planned in order to avoid over ordering and wastage;

·    The Contractor should recycle as much of the C&D materials as possible on-site. Public fill and C&D waste should be segregated and stored in different containers or skips to enhance reuse or recycling of materials and their proper disposal.  Where practicable, concrete and masonry can be crushed and used as fill.  Steel reinforcement bar can be used by scrap steel mills.  Different areas of the sites should be considered for such segregation and storage.

Good site practice to minimize the waste generation and recycle the C&D materials as far as practicable so as to reduce the amount for final disposal

Contractor

All construction sites

Construction stage

·   Land (Miscellaneous Provisions) Ordinance

·   Waste Disposal Ordinance

·   ETWB TCW No. 19/2005

·   Implemented

S7.5.1

WM5

Land-based Sediment

·    All construction plant and equipment shall be designed and maintained to minimize the risk of silt, sediments, contaminants or other pollutants being released into the water column or deposited in the locations other than designated location;

·    All vessels shall be sized such that adequate draft is maintained between vessels and the sea bed at all states of the tide to ensure that undue turbidity is not generated by turbulence from vessel movement or propeller wash;

·    Before moving the vessels which are used for transporting dredged material, excess material shall be cleaned from the decks and exposed fittings of vessels and the excess materials shall never be dumped into the sea except at the approved locations;

·    Adequate freeboard shall be maintained on barges to ensure that decks are not washed by wave action.

·    The Contractors shall monitor all vessels transporting material to ensure that no dumping outside the approved location takes place. The Contractor shall keep and produce logs and other records to demonstrate compliance and that journeys are consistent with designated locations and copies of such records shall be submitted to the engineers;

·    The Contractors shall comply with the conditions in the dumping licence.

·    All bottom dumping vessels (Hopper barges) shall be fitted with tight fittings seals to their bottom openings to prevent leakage of material;

·    The material shall be placed into the disposal pit by bottom dumping;

·    Contaminated marine mud shall be transported by spit barge of not less than 750m3 capacity and capable of rapid opening and discharge at the disposal site;

·    Discharge shall be undertaken rapidly and the hoppers shall be closed immediately. Material adhering to the sides of the hopper shall not be washed out of the hopper and the hopper shall remain closed until the barge returns to the disposal site.

·    For Type 3 special disposal treatment, sealing of contaminant with geosynthetic containment before dropping  designated mud pit would be a possible arrangement. A geosynthetic containment method is a method whereby the sediments are sealed in geosynthetic containers and, the containers would be dropped into the designated contaminated mud pit where they would be covered by further mud disposal and later by the mud pit capping at the disposal site, thereby fulfilling the requirements for fully confined mud disposal.

To control pollution due to marine sediment

Contractor

Along CKR alignment

Construction stage

·   ETWB TCW No. 34/2002

·   Implemented

S7.5.1

WM6

Chemical Waste

·   Chemical waste that is produced, as defined by Schedule 1 of the Waste Disposal (Chemical Waste) (General) Regulation, should be handled in accordance with the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes;

·   Containers used for the storage of chemical wastes should be suitable for the substance they are holding, resistant to corrosion, maintained in a good condition, and securely closed, have a capacity of less than 450 L unless the specification has been approved by EPD, and display a label in English and Chinese in accordance with instructions prescribed in Schedule 2 of the regulation;

·   The storage area for chemical wastes should be clearly labelled and used solely for the storage of chemical waste, enclosed on at least 3 sides, have an impermeable floor and bunding of sufficient capacity to accommodate 110% of the volume of the largest container or 20% of the total volume of waste stored in that area, whichever is the greatest, have adequate ventilation, covered to prevent rainfall entering, and arranged so that incompatible materials are adequately separated;

·   Disposal of chemical waste should be via a licensed waste collector, be to a facility licensed to receive chemical waste, such as the Chemical Waste Treatment Centre which also offers a chemical waste collection service and can supply the necessary storage containers, or be to a reuser of the waste, under approval from EPD. 

Control the chemical waste and ensure proper storage, handling and disposal

Contractor

All construction sites

Construction stage

·   Waste Disposal (Chemical Waste) (General) Regulation

·   Code of Practice on the Packaging, Labelling and Storage of Chemical Waste

·   Implemented

S7.5.1

WM7

General Refuse

·   General refuse generated on-site should be stored in enclosed bins or compaction units separately from construction and chemical wastes;

·   A reputable waste collector should be employed by the Contractor to remove general refuse from the site, separately from construction and chemical wastes, on a daily basis to minimize odour, pest and litter impacts.  Burning of refuse on construction sites is prohibited by law.

·   Aluminum cans are often recovered from the waste stream by individual collectors if they are segregated and made easily accessible.  Separate labelled bins for their deposit should be provided if feasible;

·   Office wastes can be reduced through the recycling of paper if volumes are large enough to warrant collection.  Participation in a local collection scheme should be considered by the Contractor.

Minimize production of the general refuse and avoid odour, pest and litter impacts

Contractor

All construction sites

Construction stage

·   Waste Disposal Ordinance

·   Implemented, deficiency rectified after observation

Land Contamination

S8.9 & Appendix 8.4

LC2

Excavation of the Contaminated Soil

·   Prior to commencement of the excavation works at the contamination zone, the zone should be clearly marked out on site and the surface levels recorded. Excavation of contaminated material should be undertaken using dedicated earth-moving plant.

·   The excavated contaminated soils would be stockpiled at designated area on site and covered by sheet to prevent dispersion of contamination during stockpiling.

·   The Contractor should pay attention to the selection of suitable groundwater lowering schemes and discharge points if the groundwater table is higher than the contaminated soils during excavation. The Contractor should also obtain a valid Water Pollution Control Ordinance (WPCO) discharge licence from EPD where applicable.

The contaminated soil will be

excavated for on-site reuse

Contractor

PBH4

Prior to commencement of construction works within the contaminated area

·   Practice Guide  (PG) for Investigation and Remediation of Contaminated Land

·   Guidance Notes for Contaminated Land Assessment and Remediation

·   Guidance Manual for Use of Risk-Based Remediation Goals (RBRGs) for Contaminated Land Management

·   Implemented

S8.9 & Appendix 8.4

LC3

·   Following completion of the excavation to the specified depth, at least one sample from the base of the excavation and four samples evenly distributed along the boundary of the excavation shall be taken for a closure assessment testing.  The acceptance criterion is shown below:

·   If the results of analysis below the RBRGs (Public Park), no further excavation will be required.

If the analysis indicates presence of contamination (i.e. noncompliance of the acceptance criteria), further excavation shall be carried out in 0.5m increment vertically and/or horizontally depending on the location(s) of the sample(s) which has exceeded the acceptance criteria. Further sampling shall also be conducted for compliance testing. The process of excavation,sampling and compliance testing should continue until all contaminated materials are removed and should be supervised by a Land Contamination Specialist.

·   Implemented

Appendix 8.4

LC4

·   A Remediation Report (RR) to demonstrate adequate clean-up shall be prepared and submitted to EPD for endorsement prior to the commencement of any construction/development works within the sites. No construction/development works shall be carried out prior to the endorsement of the RR by EPD.

·   Implemented

Hazard to Life

S9.18

H8

The driver and his assistant should be physically healthy, experienced and have good safe driving records.  The driver should hold a proper driving licence for the approved transport truck.  Dedicated training programme and regular road safety briefing sessions/ workshops should be provided to enhance their safe driving attitude and practice.  Smoking should be strictly prohibited.

To reduce the risk during explosives transport

Contractor

Works areas at which explosives would be used

Construction stage

-

·   N/A

S9.18

H9

Emergency response plans in case of road accident should be prepared and implemented.  The driver and his assistant should be familiar with the emergency procedures including evacuation, and proper communication/ fire-fighting equipment should be provided to the driver and his assistant.

To reduce the risk during explosives transport

Contractor

Works areas at which explosives would be used

Construction stage

-

·   N/A

Landscape & Visual

S10.10.1 Table 10.11

LV3

Good Site Management

·   Large temporary stockpiles of excavated material shall be covered with unobtrusive sheeting to prevent dust and dirt spreading to adjacent landscape areas and vegetation, and to create a neat and tidy visual appearance.

·   Construction plant and building material shall be orderly and carefully stored in order to create a neat and tidy visual appearance.

Minimize visual impact

Contractor

Within Project site

Construction stage

-

·   Implemented

S10.10.1 Table 10.11

LV4

Screen Hoarding

·   Decorative screen hoarding should be erected to screen the public from the construction area.  It should be designed to be compatible with the existing urban context.

Minimize visual impact

Contractor

Within Project site

Construction stage

-

·   Implemented

S10.10.1 Table 10.11

LV5

Lighting Control during Construction

·   All lighting in the construction site shall be carefully controlled to minimize light pollution and night-time glare to nearby residencies and GIC.  The Contractor shall consider other security measures, which shall minimize the visual impacts.

Minimize visual impact

Contractor

Within Project site

Construction stage

-

·   Implemented

S10.10.1 Table 10.11

LV6

Erosion Control

·   The potential for soil erosion shall be reduced by minimizing the extent of vegetation disturbance on site and by providing a protective cover over newly exposed soil.

Minimize landscape impact

Contractor

Within Project site

Construction stage

-

·   N/A

S10.10.1 Table 10.11

LV7

Tree Protection & Preservation

·   Carefully protected during construction. Tree protection measures will be detailed at the Tree Removal Application stage and plans submitted to the relevant Government Department for approval in due course in accordance with ETWB TC no. 3/2006.

Minimize landscape and visual impact

Contractor

Within Project site

Construction stage

·   ‘Guidelines for Tree Risk Management and Assessment Arrangement on an Area Basis and on a Tree Basis’, Greening, Landscape and Tree Management (GLTM) Section, DEVB

·   Latest recommended horticultural practices from GLTM Section, DEVB

·   Implemented

S10.10.1 Table 10.11

LV8

Tree Transplantation

·   For trees unavoidably affected by the Project that have to be removed, where practical transplantation will be chosen as the top priority method of removal.  If this is not possible or practical compensatory planting will be provided for trees unavoidably felled (See LV10).  For trees unavoidably affected by the Project works that are transplanted, transplantation must be carried out in accordance with ETWB TCW 2/2004 and 3/2006.

Minimize landscape and visual impact

Contractor

Within Project site and designated off-site locations

Prior to Construction stage

·   ETWB TCW 3/2006

·   Latest recommended horticultural practices from Greening, Landscape and Tree Management (GLTM) Section, DEVB

·   ETWB TCW 2/2004

·   Implemented

S10.10.1 Table 10.11

LV9

Compensatory Planting

·   For trees unavoidably affected by the Project that have to be removed, where practical transportation will be chosen as the top priority method of removal but if this is not possible or practical compensatory planting will be provided for trees unavoidably felled.  All felled trees shall be compensated for by planting trees to the satisfaction of relevant Government projects.  Required numbers and locations of compensatory trees shall be determined and agreed separately with Government during the Tree Felling Application process under ETWBTC 3/2006.

·   Compensatory tree planting may be incorporated into public open spaces and along roadside amenity areas affected  by the construction works and therefore be part of the bigger wider planting plans.  Onsite compensation planting is preferred but if necessary, additional receptor sites outside the Works Area shall be agreed separately with Government during the Tree Felling Application process.

Minimize visual impact and also enhance landscape

Contractor

Within Project site

Construction stage

·   ETWB TCW 3/2006

·   Latest recommended horticultural practices from Greening, Landscape and Tree Management (GLTM) Section, DEVB

·   ETWB TCW 2/2004

·   Implemented

Cultural Heritage Impact (Construction Phase)

S11.4.4

CH1

The contractor should be alerted during the construction on the possibility of locating archaeological remains and as a precautionary measure, AMO shall be informed immediately in case of discovery of antiquities or supposed antiquities in the subject sites.

To preserve any cultural heritage items which may be removed and damaged by the excavation

Contractor

During construction works for cut and cover tunnels

Construction stage

·   AMOs requirements

·   N/A

EM&A Project

S13.2

EM1

An Independent Environmental Checker needs to be employed as per the EM&A Manual

Control EM&A Performance

Highways Department

All construction sites

Construction stage

·   EIAO Guidance Note No. 4/2010

·   TM-EIAO

·   Implemented

S13.2-13.4

EM2

·   An Environmental Team needs to be employed as per the EM&A Manual;

·   Prepare a systematic Environmental Management Plan to ensure effective implementation of the mitigation measures;

·   An environmental impact monitoring needs to be implemented by the Environmental Team to ensure all the requirements given in the EM&A Manual are fully complied with.

Perform environmental monitoring & auditing

Highways Department/ Contractor

All construction sites

Construction stage

·   EIAO Guidance Note No. 4/2010

·   TM-EIAO

·   Implemented

Location:

Yau Ma Tei Catholic Primary School (Hoi Wang Road) (W-A1)

Monitoring date:

4, 9, 15, 20, 25 and 31 May 2023

Parameter :

TSP 1-hour

Other Factors

Nearby traffic

Date

1-hour TSP (μg/m³)

Weather

Start Time

1^st Hour

(μg/m³)

2^nd Hour

(μg/m³)

3^rd Hour

(μg/m³)

04/05/2023

Sunny

14:41

60

68

72

09/05/2023

Fine

13:05

68

74

77

15/05/2023

Fine

14:30

64

67

57

20/05/2023

Sunny

09:24

64

68

70

25/05/2023

Sunny

10:29

60

71

67

31/05/2023

Fine

10:27

71

77

63

Minimum: 57 μg/m³

Maximum: 77 μg/m³

Location:

Man Cheong Building (W-A6)

Monitoring date:

4, 9, 15, 20, 25 and 31 May 2023

Parameter :

TSP 1-hour

Other Factors

Nearby traffic

Location:

Yau Ma Tei Catholic Primary School (Hoi Wang Road) (W-A1)

Monitoring date:

4, 9, 15, 20, 25 and 31 May 2023

Parameter :

TSP 24-hour

Other Factors

Nearby traffic

Location:

Man Cheong Building (W-A6)

Monitoring date:

4, 9, 15, 20, 25 and 31 May 2023

Parameter :

TSP 24-hour

Other Factors

Nearby traffic

Location:

Yau Ma Tei Catholic Primary School (Hoi Wang Road) (W-N1A)

Monitoring date:

4, 9, 15, 20, 25 and 31 May 2023

Parameter :

L_eq, L₁₀, L₉₀

Other Factors

Nearby traffic

04/05/2023

Sunny

14:45

-

15:15

60.6

62.3

56.7

3.5

09/05/2023

Fine

13:10

-

13:40

59.8

61.9

56.5

4.9

15/05/2023

Fine

14:34

-

15:04

61.3

62.5

58.0

1.1

20/05/2023

Sunny

09:24

-

09:54

60.5

61.6

57.4

1.7

25/05/2023

Sunny

10:32

-

11:02

58.8

60.5

56.6

3.0

31/05/2023

Fine

10:30

-

11:00

57.0

61.0

54.5

3.1

Location:

Hydan Place (W-N18)

Monitoring date:

4, 9, 15, 20, 25 and 31 May 2023

Parameter :

L_eq, L_10, L₉₀

Other Factors

Nearby traffic

04/05/2023

Sunny

17:29

-

17:59

72.6

74.7

66.6

3.9

09/05/2023

Fine

09:51

-

10:21

71.0

72.6

67.5

4.6

15/05/2023

Fine

16:39

-

17:09

72.7

74.8

66.2

1.7

20/05/2023

Sunny

11:38

-

12:08

70.2

72.0

66.6

1.8

25/05/2023

Sunny

09:03

-

09:33

70.0

72.5

66.9

3.9

31/05/2023

Fine

09:00

-

09:30

69.4

72.7

64.5

3.1

Location:

Prosperous Garden Block 1 (W-N25A)

Monitoring date:

4, 9, 15, 20, 25 and 31 May 2023

Parameter :

L_eq, L_10, L₉₀

Other Factors

Nearby traffic

04/05/2023

Sunny

13:14

-

13:44

71.2

74.1

65.7

3.9

09/05/2023

Fine

10:32

-

11:02

71.7

73.0

69.7

4.4

15/05/2023

Fine

13:04

-

13:34

69.7

72.2

66.7

1.7

20/05/2023

Sunny

13:47

-

14:17

69.5

72.3

66.5

2.5

25/05/2023

Sunny

14:06

-

14:36

66.8

69.6

64.0

3.4

31/05/2023

Fine

14:03

-

14:33

68.9

73.0

65.7

2.2

Location:

The Coronation Tower 1 (W-P11)

Monitoring date:

4, 9, 15, 20, 25 and 31 May 2023

Parameter :

L_eq, L_10, L₉₀

Other Factors

Nearby traffic

04/05/2023

Sunny

15:37

-

16:07

67.3

68.6

65.0

3.2

09/05/2023

Fine

11:24

-

11:54

67.4

69.0

64.9

3.9

15/05/2023

Fine

15:37

-

16:07

67.6

69.2

65.8

1.8

20/05/2023

Sunny

10:16

-

10:46

67.9

69.1

66.1

3.1

25/05/2023

Sunny

11:42

-

12:12

67.2

68.6

65.2

3.6

31/05/2023

Fine

11:40