Certified by Environmental Team Leader
Verified by Independent Environmental Checker
Contract No. HY/2013/04 HZMB HKBCF – Infrastructure
Works Stage II (Southern Portion)
Monthly EM&A Report
for December 2016
January
2017
China State Construction Engineering (Hong Kong) Limited
Mott
MacDonald
20/F
AIA Kowloon Tower
Landmark
East
100
How Ming Street
Kwun
Tong
Kowloon
Hong
Kong
T
+852 2828 5757
F
+852 2827 1823
mottmac.hk
Contents
This Monthly Environmental Monitoring and Audit (EM&A) Report is prepared for Contract No. HY/2013/04 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities – Infrastructure Works Stage II (Southern Portion)” (hereafter referred to as “the Contract”) for the Highways Department of Hong Kong Special Administrative Region (HKSAR). The Contract was awarded to China State Construction Engineering (Hong Kong) Limited (hereafter referred to as “the Contractor”) and Mott MacDonald Hong Kong Limited (MMHK) was appointed as the Environmental Team (ET) by the Contractor.
The Contract is part of the “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities” (HZMB HKBCF) Project which is a “Designated Project” under Schedule 2 of the Environmental Impact Assessment (EIA) Ordinance (Cap. 499) and for which an EIA Report (Register No. AEIAR-145/2009) was prepared and approved. The current Environmental Permit (EP) for HKBCF, namely No. EP-353/2009/K, was issued on 11 April 2016. These documents are available through the EIA Ordinance Register. Commencement of the Contract took place on 13 March 2015 and the construction works commenced on 13 July 2015.
Mott MacDonald Hong Kong Limited has been appointed by the Contractor to implement the Environmental Monitoring & Audit (EM&A) programme for the Contract in accordance with the Updated EM&A Manual for HKBCF (Version 1.0) and will be providing environmental team services for the Contract.
This is the 18th Monthly EM&A Report for the Contract which summaries findings of the EM&A works during the reporting period from 1 to 31 December 2016 (the “reporting period”).
Environmental Monitoring and Audit Progress
The monthly EM&A programme was undertaken in accordance with the Updated EM&A Manual for HKBCF (Version 1.0). It should be noted that the air quality and noise monitoring works for the Contract are covered by Contract No. HY/2010/02 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Reclamation Works” and Contract No. HY/2011/03 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road – Section between Scenic Hill and HKBCF”. The ET of the Contract or another ET of the HZMB project is required to conduct impact air quality monitoring at AMS6 and AMS7 and noise monitoring at NMS2 and NMS3B as part of EM&A programme if these monitoring stations are no longer covered under Contract Nos. HY/2010/02 and HY/2011/03. However, this is subject to ENPO’s final decision on which ET should carry out the monitoring work at these stations.
The dates of site inspection during the reporting period are listed below:
● Environmental Site Inspection: 6, 13, 19 and 28 December 2016
Breaches of Action and Limit Levels
Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 shall be referred to the monthly EM&A report prepared by Contract No. HY/2011/03.
There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7 by the Environmental Team of Contract No. HY/2010/02 during the reporting period.
There was no Action and Limit Level exceedance for noise
recorded at station NMS2 and station NMS3B by the Environmental Team of
Contract No. HY/2010/02 during the reporting period.
Complaint Log
There was one complaint received in relation to the environmental impact during the reporting period.
Log No. |
Environmental Complaint Ref. No. |
Date of Complaint Receipt |
Description |
004 |
ENPO-C0107 |
14 December 2016 |
Noise |
After investigation, it was concluded that the complaint was not related to Contract No. HY/2013/04.
Notifications of Summons and Successful Prosecutions
There were no notifications of summons or prosecutions received during this reporting period.
Reporting Changes
There was no reporting change during the reporting period.
Future Key Issues
The future key issues to be undertaken in the upcoming month are:
● Pre-drilling, bored pile, driven H-pile, box culvert, socketed H pile, pile cap, pier column, pier head, segment erection, segment delivery (marine-based).
● Generation of excavated marine sediment and/or transport to HKBCF Contract No. HY/2013/03 (if required).
On 13 March
2015, Mott MacDonald Hong Kong Limited (MMHK) was commissioned by China State Construction
Engineering (Hong Kong) Limited (also referred to as “the Contractor”) to
undertake the Environmental Team (ET) services (including environmental
monitoring and audit (EM&A)) for Contract No. HY/2013/04 “Hong Kong-Zhuhai-Macao
Bridge Hong Kong Boundary Crossing Facilities – Infrastructure Works Stage II
(Southern Portion)” (“the Contract”) for the Highways Department of Hong Kong
Special Administrative Region (HKSAR).
The Contract is part of the “Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities” (HZMB HKBCF) Project which is a “Designated Project” under Schedule 2 of the Environmental Impact Assessment (EIA) Ordinance (Cap. 499) and for which an EIA Report (Register No. AEIAR-145/2009) was prepared and approved. The current Environmental Permit (EP) for HKBCF, namely No. EP-353/2009/K, was issued on 11 April 2016. These documents are available through the EIA Ordinance Register. Commencement of the Contract took place on 13 March 2015 and the construction works commenced on 13 July 2015. The works areas of the contract are shown in Appendix A.
This is the 18th Monthly EM&A Report
summarising the findings of
EM&A activities conducted under the Contract from 1 to 31 December 2016
(the “reporting period”) and is submitted
to fulfil Condition 5.4 of the EP.
The Proposed works
under this Contract comprise the following:
● Construction of vehicular bridge and at-grade
roads at the southern portion of Hong Kong Boundary Crossing Facilities;
● Construction of associated street lighting,
street furniture, road marking, road signage, box culverts and outfalls,
drainage, sewerage, fresh water and flushing water supply, irrigation,
landscape, electrical and mechanical (E&M), utilities and services works;
● Provisioning of civil engineering works and
power supply for Traffic Control and Surveillance System (TCSS); and
● Other works in accordance with the Contract.
The organisation chart and lines of communication with respect to the on-site environmental management structure together with the contact information of the key personnel are shown in Appendix B. The key personnel contact names and numbers are summarized in Table 1.1.
Table 1.1: Contact Information of Key Personnel
Party |
Position |
Name |
Telephone |
Fax |
Engineer or Engineer’s Representative (AECOM Asia Co. Ltd.) |
Chief Resident Engineer |
Alfred Cheng |
3958 7471 |
3468 2076 |
Environmental Project Office / Independent Environmental Checker
(Ramboll Environ Hong Kong Limited) |
Environmental Project Office Leader |
Y H Hui |
3465 2888 |
3465 2899 |
Independent Environmental Checker |
Raymond Dai |
3465 2888 |
3465 2899 |
|
|
Environmental Site Supervisor |
Ray Yan |
5181 8165 |
3465 2899 |
Contractor (China State Construction Engineering (Hong Kong) Limited) |
Site Agent |
Eddie Tang |
9863 7686 |
2459 4336 |
Environmental Officer |
Ricky Hon |
9100 7509 |
2459 4336 |
|
Environmental Team (Mott MacDonald Hong Kong Limited) |
Environmental Team Leader |
Gary Chow |
2828 5874 |
2827 1823 |
24-hour Complaint Hotline |
- |
- |
5236 7111 |
- |
The Construction Works Programme of the Project is provided in Appendix C.
A summary of the construction activities undertaken during this reporting period is shown below:
● Pre-drilling: 3 completed
● Bored Pile: 23 completed
● Driven H Pile: 71 completed
● Box Culvert: 3 bays started
● Pile Cap: 3 completed
● Pier Column: 7 completed
● Pier Head: 11 completed
● Segment Erection: 3 completed
● Segment Delivery: 63 completed (marine-based)
● Generation of excavated marine sediment.
The air quality monitoring works for the Contract are covered by Contract No. HY/2010/02 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Reclamation Works” and Contract No. HY/2011/03 “Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road – Section between Scenic Hill and HKBCF”. The ET of the Contract or another ET of the HZMB project is required to conduct impact air quality monitoring at AMS6 and AMS7 as part of EM&A programme if these air quality monitoring stations are no longer covered under Contract No. HY/2010/02 and HY/2011/03. Figure 1 shows the locations of air monitoring stations.
Table 2.1: Construction Dust Monitoring Locations
Identification No. |
Location Description |
AMS6(1) |
Dragonair/CNAC (Group) Building |
AMS7(1) |
Hong Kong SkyCity Marriot Hotel |
Remarks: (1) The ET of this Contract should conduct impact air quality monitoring at the AMS listed in the table as part of EM&A programme according to latest notification from ENPO when the monitoring station(s) is/are no longer covered by another ET of the HZMB project.
The monitoring requirements, monitoring equipment, monitoring parameters, frequency and duration, monitoring methodology and monitoring schedule are detailed in the monthly EM&A Reports prepared for Contract Nos. HY/2010/02 and HY/2011/03.
The Action and Limit Levels for 1-hr TSP and 24-hr TSP are provided in Table 2.2 and Table 2.3 respectively.
Table 2.2: Action and Limit Levels for 1-hour TSP
Monitoring Station |
Action Level, mg/m3 |
Limit Level, mg/m3 |
AMS6 – Dragonair / SNAC (Group) Building (HKIA) |
360 |
500 |
AMS7 – Hong Kong SkyCity Marriot Hotel |
370 |
500 |
Table 2.3: Action and Limit Levels for 24-hour TSP
Monitoring Station |
Action Level, mg/m3 |
Limit Level, mg/m3 |
AMS6 – Dragonair / SNAC (Group) Building (HKIA) |
173 |
260 |
AMS7 – Hong Kong SkyCity Marriot Hotel |
183 |
260 |
The event and action plan is provided in Appendix D.
If exceedance(s) at these stations is/are recorded by the ET of the Contract or referred by the other ET under the HZMB project to the Contract, the ET of the Contract will carry out an investigation and findings will be reported in the monthly EM&A Report.
The monitoring results for AMS6 and AMS7 are reported in the monthly EM&A Reports prepared for Contract Nos. HY/2011/03 and HY/2010/02 respectively.
Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 shall be referred to the monthly EM&A report prepared by Contract No. HY/2011/03.
There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7 by the Environmental Team of Contract No. HY/2010/02 during the reporting period.
The noise monitoring works for the Contract are covered by Contract No. HY/2010/02 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Reclamation Works”. The ET of the Contract or another ET of the HZMB project is required to conduct noise monitoring at NMS2 and NMS3B as part of EM&A programme if these monitoring stations are no longer covered under Contract No. HY/2010/02. Figure 2 shows the locations of noise monitoring stations.
Table 3.1: Construction Noise Monitoring Locations
Identification No. |
Location Description |
NMS2(1) |
Seaview Crescent |
NMS3B(1) (2) |
Site Boundary of Site Office Area at Works Area WA2 |
Remarks: (1) The ET of this Contract should conduct impact noise monitoring at the NMS listed in the table as part of EM&A programme according to the latest notification from ENPO when the monitoring station(s) is/are no longer covered by another ET of the HZMB project.
(2) The Action and Limit Levels for schools will be applied for this alternative monitoring location.
The monitoring requirements, monitoring equipment, monitoring parameters, frequency and duration, monitoring methodology and monitoring schedule are detailed in the monthly EM&A Reports prepared for Contract No. HY/2010/02.
The Action and Limit Levels for construction noise are defined in Table 3.2.
Table 3.2: Action and Limit Level for Construction Noise
Parameter |
Action Level |
Limit Level |
07:00 – 19:00 hours on normal weekdays |
When one documented complaint is received |
75 dB(A)* |
Notes: If works are to be carried out during restricted hours, the conditions stipulated in the construction noise permit issued by the Noise Control Authority have to be followed.
* Reduce to 70 dB(A) for schools and 65 dB(A) during school examination period.
The monitoring results for NMS2 and NMS3B are reported in
the monthly EM&A Reports prepared for Contract No. HY/2010/02. No noise exceedances were recorded at
stations NMS2 and NMS3B by the ET of Contract No. HY/2010/02 during the
reporting period.
Site Inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control mitigation measures for the project. During the reporting period, site inspections were carried out on 6, 13, 19 and 28 December 2016.
Particular observations during the site inspections and corrective actions undertaken by the Contractor are described below.
a. Oil drums without drip tray were observed. The Contractor was reminded to provide the necessary drip trays and/or bunded storage areas. Subsequently, drip trays were provided for the oil drums. The observation was closed on 6 December 2016.
6 December 2016
a. Some stagnant water in an excavation area was observed, however the pump provided was not in operation. Subsequently, the pump was turned on the pump stagnant water from the excavation area to sedimentation facility. The observation was closed on 13 December 2016.
13 December 2016
a. No new observations were made.
19 December 2016
a. A stockpile of used C&D construction materials was untidy. Subsequently, the stockpile was cleared. The observation was closed on 28 December 2016.
b. Loose general refuse was observed next to a waste bin. Subsequently, the loose general refuse was placed in the waste bin. The observation was closed on 28 December 2016.
c. Haul roads behind a box culvert works area and outside site office were dry and dusty. Subsequently, water spray was provided for the haul roads. The observation was closed on 28 December 2016.
28 December 2016
a. No new observations were made.
The Contractor registered as a chemical waste producer for the Contract. Sufficient numbers of receptacles were available for general refuse collection and sorting. As a practical means, the disposal operation is managed by a single HKBCF contractor who is also responsible for applying dumping permit and its subsequent extension applications from EPD. Contract No. HY/2013/03 has been assigned to coordinate and arrange for disposal of extracted marine sediment from this Contract.
There was no generation of excavated sediment for treatment during this reporting period. Any treatment of excavated marine sediment will be conducted using cement solidification/ stabilization (Cement S/S) techniques and the treated sediment will be reused onsite for either backfilling or landscaping (e.g. berm material).
The monthly summary of waste flow table is detailed in Appendix E.
The Contractor was reminded that chemical waste containers should be properly treated and stored temporarily in designated chemical waste storage area on site in accordance with the Code of Practice on the Packing, Labelling and Storage of Chemical Waste.
After the acceptance of the review of the approved Sediment Quality Report (SQR) for this Project under EPD letter dated 19 August 2015, an approval to dispose the marine sediment extracted from bored piling for this Project was then approved under memo from Secretary, Marine Fill Committee of CEDD dated 20 August 2015 for the disposal of marine sediment extracted from bored piling works. The disposal sites allocated to this Project are the Mud Pit CMP2 of the Confined Marine Sediment Disposal Facility to the South of The Brothers (or at the East of Sha Chau). As advised by CEDD in the memo dated 19 February 2016, from 00:00 on 22 March 2016 onward, the disposal space at CMP2 of the South of The Brothers is closed and all disposal of contaminated sediment is to be carried out at CMP Vd to the East of Sha Chau (ESC).
As Contract No. HY/2013/01 has commenced treatment of the extracted marine sediment, treatment will continue and the treated marine sediment will be re-used within the HKBCF Island. On the other hand, Contract Nos. HY/2013/02, HY/2013/03 and HY/2013/04 have not commenced the treatment of extracted marine sediment. Therefore the marine sediment extracted from these three Contracts will be disposed to the allocated disposal sites directly without treatment. As a practical means, the disposal operation is managed by one contractor who is also responsible for applying dumping permit and its subsequent extension applications from EPD. Contract No. HY/2013/03 has been assigned to coordinate and arrange for disposal of extracted marine sediment from all three Contracts.
The SQR was further reviewed in mid-2016. EPD has no comment to extend the validity of the SQR to August 2017 under letter dated 18 August 2016.
Based on the actual piling operation, the estimated quantity of marine sediment to be extracted has been revised from 85,000 m3 to 126,000 m3 (bulk volume). EPD has no comments on the request as in the letter dated 20 October 2016. The Secretary of Marine Fill Committee, CEDD approved the increasing quantity in the memo dated 10 November 2016.
During the course of reviewing the SQR, it was noted that the contamination level of the marine sediment extracted from the inner part of the HKBCF Island was not identified during the previous sampling and testing. As requested by EPD, sampling and testing are required. The Sediment Sampling and Testing Proposal (SSTP) for the inner area of the HKBCF Island was approved by EPD on 2 June 2016.
As in the agreed SSTP for the inner area of the HKBCF Island, samples were taken from the seventeen batches of stockpiled marine sediments and from five boreholes each in one of the five sampling grids. After conducting chemical tests on samples, six batches of stockpiled samples under Contract No. HY/2013/03 and all eight batches of stockpiled samples under Contract No. HY/20013/04 are classified as Category L sediment. The Secretary of Marine Fill Committee of CEDD allocated disposal sites under memo dated 24 October 2016 and dated 22 November 2016 for disposal of a total of 9,500 m3 in-situ volume of Category L sediment (using a bulk factor of 1.3). The Category L sediment was disposed in December 2016.
One sample from the batch of stockpiled marine sediment under Contract No. HY/2013/03 and samples from all five sampling grids had contamination levels exceeding the Lower Chemical Exceedance Levels (LCEL) and biological screenings were carried out. All samples passed the biological screenings and are classified as Category Mp sediment and to be disposed off site using Type II confined marine disposal method the same method used for marine sediment extracted from other part of the HKBCF Island.
The barge for disposal of marine sediment will morn at the temporary loading and unloading at the east shore of the HKBCF Island, which has been being used by reclamation contractor (Contract No. HY/2010/02) for reclamation activities. In terms of safety consideration, each dumping date will be allocated to one Contract. The quantity of marine sediment disposed on the date is from one Contract.
During dumping, each Contractor is responsible for transporting the marine sediment from his site area to the barge. The estimated quantity of marine sediment in each truck is confirmed by Resident Site Staff of each Contract. The trip tickets for transportation and disposal of marine sediment are collected and checked. Contract No. HY/2013/03 as the dumping permit holder is responsible for reporting to EPD the quantity disposed of as the condition stipulated in the dumping permit.
Marine sediment extracted from bored piling in this Contract was disposed to allocated dumping site via Contract No. HY/2013/03 on 3, 5, 6, 9, 10, 13, 14, 23, 24, 30 and 31 December 2016. The quantities disposed up to end of December 2016 are in following table (Table 4.1):
Table 4.1: Summary of Marine Sediment disposed to Dumping Site via Contract No. HY/2013/03
Month/Year |
Quantity
Disposed (m3) |
Up to end November 2016 |
29,344 |
December 2016 |
2,538 |
Cat. L in December 2016 |
3,570 |
Total = |
35,452 |
Note: All sediments are in Type II disposal method except Cat L (in Type I)
For monthly breakdown of these quantities, please refer to the waste flow table in Appendix E.
The valid environmental licenses and permits during the reporting period are summarized in Appendix F.
In response to the site audit findings, the Contractor carried out corrective actions.
A summary of the Implementation Schedule of Environmental Mitigation Measures (EMIS) is presented in Appendix G. Most of the necessary mitigation measures were implemented properly.
Implementation status of the Regular Marine Travel Route Plan (RMTRP) was checked by ET. Training of marine travel route for marine vessel operator was given to relevant staff and relevant records were kept properly., The marine traffic records and geographical plots of all the vessel tracks to demonstrate the conformance of the vessel to the proposed route in December 2016 would be provided to ER, ETL and IEC/ENPO for checking within the month of January 2017.
Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 shall be referred to the monthly EM&A report prepared by Contract No. HY/2011/03.
There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7 by the Environmental Team of Contract No. HY/2010/02 during the reporting period.
There was no Action and Limit Level
exceedance for noise recorded at station NMS2 and station NMS3B by the
Environmental Team of Contract No. HY/2010/02 during the reporting period.
There was one complaint received in relation to the environmental impact during the reporting period. The summary of environmental complaints is presented in Table 4.2. The details of cumulative statistics of Environmental Complaints are provided in Appendix H.
Table 4.2: Summary of Environmental Complaints for the Reporting Month
Log No. |
Environmental Complaint Ref. No. |
Date of Complaint Receipt |
Description |
004 |
ENPO-C0107 |
14 December 2016 |
Noise |
The complaint was about hammering noise during night-time period from unidentified sources possibly from construction sites of HZMB. According to the complainant, in the preceding month hammering noise was heard during the early morning hours possibly from nearby construction sites. While the complainant was not sure about the exact source of this noise, he suspected that it was most likely from HZMB site works.
As informed by the Contractor of HY/2013/04, works conducted under Contract No. HY/2013/04 during restricted hours between mid-November and mid-December 2016 involved transport of concrete segments to HZMB HY/2013/04 site using tug boat and barge (marine-based) and crane and tractor with trailer (land-based). Such activity commenced after 1:30am in the morning. No hammering works were conducted by the Contract during restricted hours.
It was noted that the Contractor obtained valid Construction Noise Permits (CNP nos. GW-RS1064-16 and GW-RS1192-16) permitting the use of certain powered mechanical equipment (PME) during restricted hours including the period of mid-November to mid-December 2016. The abovementioned activity was permitted in these CNPs.
Based on the investigation findings above, the complaint is considered invalid under HY/2013/04. Nevertheless, the Contractor is reminded to observe all conditions stated in the relevant valid CNPs and implement all necessary noise mitigation measures identified in the EM&A Manual.
No notification of summons or prosecutions was received during the reporting period.
Statistics on notifications of summons and successful prosecutions are summarized in Appendix H.
As informed by the Contractor, the major construction activities for January 2017 are summarized in Table 5.1.
Table 5.1: Construction Activities for January 2017
Site Area |
Description of Activities |
HKBCF |
●
Pre-drilling, bored pile, driven H-pile, box
culvert, socketed H pile, pile cap, pier column, pier head, segment erection,
segment delivery (marine-based). ●
Generation of excavated marine sediment and/or
transport to HKBCF Contract No. HY/2013/03 (if required). |
The tentative schedule for weekly site inspections for January 2017 is provided in Appendix I.
Commencement of the Contract took place on 13 March 2015 and the construction works of the Contract commenced on 13 July 2015.
Summary of Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level at AMS6 shall be referred to the monthly EM&A report prepared by Contract No. HY/2011/03.
There was no Action and Limit Level exceedance of 1-hr TSP level and 24-hr TSP level recorded at station AMS7 by the Environmental Team of Contract No. HY/2010/02 during the reporting period.
There was no Action and Limit Level exceedance for noise
recorded at station NMS2 and station NMS3B by the Environmental Team of
Contract No. HY/2010/02 during the reporting period.
Environmental site inspections were carried out on 6, 13, 19 and 28 December 2016. Recommendations on remedial actions were given to the Contractor for the deficiencies identified during the site inspections.
There was one complaint received in relation to the environmental impact during the reporting period. After investigation, it was found that the complaint was not related to the Contract.
There were no notifications of summons or prosecutions received during the reporting period.
Appendix A. Location of Works Areas
Appendix B. Project Organization for Environmental Works
Appendix C. Construction Programme
Appendix D. Event and Action Plan
Appendix E. Waste Flow Table
Appendix F. Environmental Licences and Permits
Appendix G. Implementation Schedule for Environmental Mitigation Measures (EMIS)
Appendix H. Statistics on Environmental Complaints, Notification of Summons and Successful Prosecutions
Appendix I. Environmental Site Inspection Schedule