CONTRACT NO: SD 6/2020   Construction of San Shek Wan Sewage Treatment Works Associated Submarine Outfall and Pui O Sewerage Works   Under Environmental Permit no. EP-538/2017   quarterly Environmental Monitoring & Audit Report   November 2021 - January 2022 revision 2

Table of contents

 

1      Introduction.. 5

1.1.......... Scope of the Report 5

1.2.......... Structure of the Report 5

2.     Basic Project Information.. 7

2.1.......... Project Organization and Key Contact Personnel 7

2.2.......... Construction Programme. 7

3.     A Brief Summary of EM&A Requirements. 9

3.1.......... Monitoring Parameters. 9

3.2.......... Environmental Quality Performance Limits. 9

4.     Implementation Status. 10

4.1.......... Advice on the implementation status of environmental protection and pollution control/mitigation measures. 10

4.2.......... Environmental Mitigation Measures. 10

4.3.......... Environmental monitoring requirements and contractual requirements. 10

5.     Monitoring Results Analysis. 12

5.1.......... Noise Monitoring. 12

5.2.......... Water Quality Monitoring. 12

5.3.......... Waste Management 12

6.     Complaints, Notification of Summons and Prosecution.. 14

7.     Comments and Recommendations. 15

8.     Conclusion.. 16

lIST OF TABLES

 

Table 2.1       Contact Details of Key Personnel

Table 4.1       Summary of submission status under EP-538/2017

Table 4.2       Summary of the current status on licences and/or permits on environmental protection pertinent to the Project

Table 5.1       Summary of Quantities of Waste Material (November 2021 to January 2022)

Table 6.1       Cumulative Statistics on Complaints

Table 6.2       Cumulative Statistics on Successful Prosecutions

Table 7.1       Construction Activities and Recommended Mitigation Measures in Past 3 Months

 

 

lIST OF FIGUREs

 

Figure 2.1    Project Organization Chart

Figure 2.2     Master Layout Plan

Figure 5.1    Locations of Noise Monitoring Station

Figure 5.2    Locations of Water Quality Monitoring Stations

 

 

lIST OF APPENDIces

 

Appendix 5.1    Noise Monitoring Results and Graphical Presentations

Appendix 5.2    Monthly Summary Waste Flow Table & Yearly Summary Waste Flow Table

 

 

EXECUTIVE SUMMARY

       i.        This is the Environmental Monitoring and Audit (EM&A) Quarterly Report – November 2021 to January 2022 of Outlying Islands Sewerage Stage 2 – South Lantau Sewerage Works under Environmental Permit no. EP-538/2017 (Hereafter as “the Project”). The construction works of the Project was commenced on 3 November 2021 and the tentative completion date is Q1 2026. The EM&A report presenting the environmental monitoring findings and information recorded during the period of 01 November 2021 to 31 January 2022. The cut-off date of reporting is at the end of each reporting month.

 

      ii.        In the reporting months, the principal work activities conducted are as follow:

 

 

Exceedances of Action/Limit Levels

Noise Monitoring

     iii.        Noise monitoring was conducted at five (5) noise monitoring stations N12a, N12b, N13, N14 and N17 once per week in the reporting month.

     iv.        No action or limit level exceedance was recorded in construction noise level in this reporting period.

 

Water Quality Monitoring

      v.        No water quality monitoring was conducted at nine (9) monitoring stations three days per week in the reporting month due to no marine-based construction works.

 

Complaint log

     vi.        No environmental complaint regarding the construction works was recorded in present quarter.

 

Notifications of Any Summons and Successful Prosecutions

    vii.        No environmental notification of any summons and successful prosecution regarding the construction works was recorded in present quarter.

 

1      Introduction

1.1          Scope of the Report

1.1.1.     Lam Environmental Services Limited (LES) has been appointed to work as the Environmental Team (ET) under Environmental Permit (EP) no. EP-538/2017 to implement the Environmental Monitoring and Audit (EM&A) programme as stipulated in the EM&A Manual of the approved Environmental Impact Assessment (EIA) Report for Outlying Islands Sewerage Stage 2 - South Lantau Sewerage Works (Register No.: AEIAR-210/2017).

1.1.2.     The quarterly EM&A Report is prepared according to Section 12.3 of the Project EM&A Manual.

 

1.2          Structure of the Report

 

Section 1        Introduction – details the scope and structure of the report

 

Section 2        Basic Project Information – a synopsis of project organization, programme contacts of key management, and a synopsis of work undertaken during the quarter.

 

Section 3        A Brief Summary of EM&A requirements – including monitoring parameters, environmental quality performance limits (Action and Limit levels); and environmental mitigation measure, as recommended in the EIA Report.

                      

Section 4        Implementation Status – Advice on the implementation status of environmental protection and pollution control/mitigation measures, as recommended in the EIA Report and summarised in the updated implementation schedule.

 

Section 5        Monitoring Results Analysis – the trends of the monitoring parameters in present quarter; advice on the solid and liquid waste management status.

                      

Section 6        Summary of Non-Compliance (exceedances) of the environmental quality performance limits, Complaints, Notification of Summons and Successful Prosecutions

A brief review of the reasons for and the implications of non-compliance and a summary description of the actions taken and any follow-up procedures related to earlier non-compliance.

A summary record of all complaints received (written or verbal) for each media, liaison and consultation undertaken, actions and follow-up procedures taken;

A summary record of notifications of summons and successful prosecutions for breaches of the current environmental protection/pollution control legislations, including locations and nature of the breaches, investigation, follow-up actions taken and results;

                      

Section 7        Comments and Recommendations – such as effectiveness and efficiency of the mitigation measures, improvement in the EM&A programme, if any.

 

Section 8        Conclusion and Project Proponent’s contacts and hotline telephone number for the public to make enquiries

2.         Basic Project Information

2.1          Project Organization and Key Contact Personnel

2.1.1       Drainage Services Department is the overall project controllers for the Project. For the construction phase of the Project, Contractor(s), Environmental Team and Independent Environmental Checker are appointed to manage and control environmental issues. Key personnel and contact particulars are summarized in Figure 2.1 and Table 2.1:

Table 2.1 Contact Details of Key Personnel

Party	Role	Post	Name	Contact No.	Contact Fax
Drainage Services Department (DSD)	The Engineer for the Contract	Engineer	Mr. Silas Chan	2594 7272	3104 6426
Binnies Hong Kong Limited	Engineer’s Representative	Resident Engineer	Mr. Clarence Chak	6428 5532	-
Kwan Lee – Chun Wo Joint Venture	Contractor	Site Agent	Mr. Charles Tse	9270 3384	2744 6937
		Environmental Officer	Ms. Shirley Kong	5162 5933
SMEC Hong Kong	Independent Environmental Checker (IEC)	Independent Environmental Checker (IEC)	Ms. Kitty Lee	3995 8140	3995 8101
Lam Environmental Services Limited	Environmental Team (ET)	Environmental Team Leader (ETL)	Ms. Melody Cheng	2882 3939	2882 3331

 

2.2          Construction Programme

2.2.1       The proposed sewerage works will collect the sewage generated from the unsewered areas of Shui Hau, Tong Fuk, Cheung Sha, San Shek Wan, Pui O and Ham Tin in South Lantau (i.e. within the Project Catchment Area) and convey it to a proposed sewage treatment works at San Shek Wan for treatment and disposal into outer bay of Pui O/ Chi Ma Wan via a submarine outfall.

2.2.2       The entire Project are divided into three contracts. Contract No. DC/2020/20 (the Contract) would have the following implementations as demonstrated in Figure 2.2.

2.2.3       The major components of the Project under Environmental Permit (EP) (EP No. EP-538/2017) comprises: (i) construction of sewage treatment works at San Shek Wan (SSWSTW) and associated submarine outfall; (ii) construction of sewage pumping station at Pui O (POSPS); (iii) village sewage works at Pui O; and (iv) trunk sewers and rising mains on carriageways.

 

3.      A Brief Summary of EM&A Requirements

3.1  Monitoring Parameters

Noise Monitoring

3.1.1       The construction noise level shall be measured in terms of the A-weighted equivalent continuous sound pressure level (Leq). Leq (30min) should be used as the monitoring parameter. Supplementary information for data auditing, statistical results such as L10 and L90 shall also be obtained for reference.

3.1.2       For impact monitoring for construction of village sewers / rising main, noise monitoring should be undertaken on weekly basis. One set of Leq (30min) noise level as six consecutive Leq (5min) between 07:00-19:00 hours on normal weekdays.

 

Water Quality Monitoring

3.1.3       In construction phase, the levels of dissolved oxygen (DO), temperature, turbidity and salinity should be measured in situ while suspended solids (SS) is determined by laboratory analysis.

 

3.2  Environmental Quality Performance Limits

Noise Monitoring

3.2.1       No action or limit level exceedance was recorded in construction noise level in this reporting period.

 

Water Quality Monitoring

3.2.2       Due to no marine-based construction works in reporting period, water quality monitoring was not conducted.

 

 

 

4.      Implementation Status

4.1  Advice on the implementation status of environmental protection and pollution control/mitigation measures

4.1.1       Mitigation measures according to the environmental mitigation implementation schedule in Annex A of EM&A Manual were generally implemented by the Contractor. Hence, the EM&A programme was considered effective and shall be maintained.               

 

4.2  Environmental Mitigation Measures

4.2.1       Environmental mitigation measures mentioned the EIA Report were weekly reviewed and recorded in Weekly Environmental Site Audit Checklist. Also, a summary of the submission status of the reporting quarter on submissions and measures mentioned in Environmental Permit (EP-538/2017) are shown in Table 4.1.

Table 4.1 Summary of submission status under EP-538/2017

 

4.3  Environmental monitoring requirements and contractual requirements

4.3.1       A summary of the submission status of the reporting quarter on licences and/or permits on environmental protection pertinent to the Project is shown in Table 4.2.

Table 4.2 Summary of the current status on licences and/or permits on environmental protection pertinent to the Project

Permits and/or Licences	Permit. No. / Account No.	Issued Date	Valid Period & Expiry Date (dd-mm-yyyy to dd-mm-yyyy)	Status
Notification of Works Under APCO	466408	14 Apr 2021	N/A	Valid
Discharge Licence	POPS: WT00039820-2021 SSWSTW: WT00039636-2021	31 Dec 2021   30 Dec 2021	31-12-2021 to 31-12-2026   30-12-2021 to 31-12-2026	Valid
Billing account under Waste Disposal Ordinance	Account No.: 7040411	05 May 2021	N/A	Valid
Registration as a Chemical Waste Producer	0000-931-K3428-01	13 May 2021	N/A	Valid
Construction Noise Permit	GW-RS0921-21	26 Nov 2021	29-11-2021 to 28-05-2022	Valid

  Note: Only include those valid or under application; fill in “N/A” for non-applicable item(s).

 

 

3.1. 

5.      Monitoring Results Analysis

5.1    Noise Monitoring

5.1.1       Noise monitoring was conducted at five (5) noise monitoring stations N12a, N12b, N13, N14 and N17 once per week in present quarter.

5.1.2       Noise monitoring location plans with sensitive receivers are shown in Figure 5.1.

5.1.3       Noise monitoring results measured in this reporting period are reviewed and summarized. Details of noise monitoring results and graphical presentation can be referred in Appendix 5.1.

5.1.4       One set of L_eq(30min) was recorded 77.3 dB(A) at N12b (Lo Uk Tsuen) on 23 December 2021. Construction noise sources and other noise sources are recorded during the noise measurement. Construction noise sources include grinder, handheld breaker and excavator in Lo Uk Tsuen sewer works; non-project related traffic noise at South Lantau Road was also recorded. The construction noise level was 67.4 dB(A) when factor out baseline level of 76.8 dB(A), which is below limit level.

5.1.5       No action or limit level exceedance was recorded in construction noise level in this present quarter.

 

5.2    Water Quality Monitoring

5.2.1       Water quality monitoring involves nine (9) monitoring stations and to be conducted three days per week upon commencement of marine works.

5.2.2       Water monitoring location plans with sensitive receivers are shown in Figure 5.2.

5        

5.2.3       Due to no marine-based construction works in present quarter, no water quality monitoring was conducted. Water quality monitoring results to be measured in the upcoming reporting period will be reviewed and summarized.

 

5.3       Waste Management

5.3.1       The quantities of waste for disposal in present quarter are summarized in Table 5.1. The Quarterly Summary Waste Flow Table and Yearly Summary Waste Flow Table are shown in Appendix 5.2.

 

 

 

 

 

 

Table 5.1 Summary of Quantities of Waste Material (November 2021 to January 2022)

Waste Type	Quantity for reporting quarter	Cumulative Quantity-to-Date
Hard Rock and Large Broken Concrete (Inert) (in ‘000m3)	0	0
Reused in this Contract (Inert) (in ‘000m3)	0	0
Reused in other Projects (Inert) (in ‘000m3)	0	0
Disposal as Public Fill (Inert) (in ‘000m3)	0.86687	0.86687
Metals (in ‘000kg)	0.00720	0.00720
Paper / Cardboard Packing (in ‘000kg)	0.02448	0.02448
Plastics (in ‘000kg)	0.00696	0.00696
Chemical Wastes (in ‘000kg)	0	0
General Refuses (in ‘000kg)	178.95	178.95

*: Further breakdown into sub-group if considered applicable;

*: Please also provide daily dumping report for our records.

*: Delete as appropriate

 

6.      Complaints, Notification of Summons and Prosecution

6.        

6.0.        

6.1.1       No environmental complaint, notification of summons and successful prosecution regarding construction works was recorded in present quarter.

6.1.2       Cumulative statistic on complaints and successful prosecutions are summarized in Table 6.1 and Table 6.2 respectively.

Table 6.1 Cumulative Statistics on Complaints

Reporting Period	No. of Complaints
November 2021 - January 2022	0
Project commencement to the end of last reporting month	-
Total	0

 

Table 6.2 Cumulative Statistics on Successful Prosecutions

Environmental Parameters	Cumulative No. Brought Forward	No. of Successful Prosecutions this month (Offence Date)	Cumulative No. Project-to-Date
Air	-	0	0
Noise	-	0	0
Water	-	0	0
Waste	-	0	0
Other	-	0	0
Total	-	0	0

 

7.      Comments and Recommendations

7.        

7.0.        

7.1.1       In the reporting months, the principal work activities conducted are as follow.

Table 7.1 Construction Activities in Past 3 Months

 

7.1.2       The recommended mitigation measures for the past 3 months are listed below:

• Proper water pollution control measures to be taken to prevent untreated effluent discharge from site work

• Dust control during dust generating works;

• Implementation of proper noise pollution control;

• Tree protection works within the Project Site; and

• Proper waste handling, recycling and storage.

The implemented mitigation measures are considered effective.

 

 

 

8.      Conclusion

8.1  Noise Monitoring.

8.1.1       No action or limit level exceedance was recorded in construction noise level in this present quarter.

 

8.2  Water Quality Monitoring

8.2.1       Due to no marine-based construction works in present quarter, no water quality monitoring was conducted.

 

8.3  Review of the Reasons for and the Implications of Non-compliance

8.3.1       No environmental non-compliance was recorded in present quarter.

 

8.4  Summary of action taken in the event of and follow-up on non-compliance

8.4.1       There was no particular action taken since no non-compliance was recorded in present quarter.

 

 

 

 

 

 

 

Figure 2.1

 

Project Organisation Chart

 

 

 

 

 

 

 

Figure 2.2

 

Master Layout Plan

 

 

 

 

 

 

 

 

Figure 5.1

 

Locations of Noise Monitoring Station

 

 

 

 

 

 

 

Figure 5.2

 

Locations of Water Quality Monitoring Stations

 

 

 

 

 

 

 

Appendix 5.1

 

Noise Monitoring Results and Graphical Presentations

 

 

 

 

 

 

 

Appendix 5.2

 

Monthly Summary Waste Flow Table

&

Yearly Summary Waste Flow Table