COVER

Table of Content

EXECUTIVE SUMMARY

1. INTRODUCTION.. 1

1.1 Background 1

1.2 Project Organisation 1

1.3 Construction Works undertaken during the Reporting Month 1

1.4 Summary of EM&A Requirements 7

2. AIR QUALITY.. 12

2.1 Monitoring Requirements 12

2.2 Monitoring Locations 12

2.3 Monitoring Equipment 13

2.4 Monitoring Parameters, Frequency and Duration 14

2.5 Monitoring Procedures and Calibration Details 14

2.6 Results and Observations 15

3. NOISE.. 16

3.1 Monitoring Requirements 16

3.2 Monitoring Locations 16

3.3 Monitoring Equipment 17

3.4 Monitoring Parameters, Frequency and Duration 17

3.5 Monitoring Procedures and Calibration Details 17

3.6 Results and Observations 18

4. ENVIRONMENTAL AUDIT.. 21

4.1 Review of Environmental Monitoring Procedures 21

4.2 Assessment of Environmental Monitoring Results 21

4.3 Site Environmental Audit 22

4.4 Status of Environmental Licensing and Permitting 22

4.5 Implementation Status of Environmental Mitigation Measures 25

4.6 Implementation Status of Event/Action Plans 25

4.7 Implementation Status of Environmental Complaint Handling Procedures 25

5. FUTURE KEY ISSUES. 27

5.1 Status of Natural Gas supply 27

5.2 Key Issues for the Coming Month 27

5.3 Monitoring Schedules for the Next 3 Months 28

5.4 Construction Program for the Next 3 Months 29

6. CONCLUSION.. 30

List of Tables

Table 1.1 Construction Activities and Their Corresponding Environmental Mitigation Measures

Table 2.1 Air Quality Monitoring Locations

Table 2.2 Air Quality Monitoring Equipment

Table 2.3 Air Quality Monitoring Parameter, Duration and Frequency

Table 3.1 Noise Monitoring Locations

Table 3.2 Noise Monitoring Equipment

Table 3.3 Noise Monitoring Duration and Parameter

Table 4.1 Summary of AL Level Exceedances on Monitoring Parameters

Table 4.2 Estimated Amounts of Waste Generated in August 2005

Table 4.3 Summary of Environmental Licensing and Permit Status

Table 4.4 Environmental Complaints / Enquiries Received in August 2005

Table 4.5 Outstanding Environmental Complaints / Enquiries Carried Over

List of figures

Figure 1.1 Layout of Work Site

Figure 1.2 Cable Route of Transmission System

Figure 1.3 Location of Dumping Area (South Cheung Chau Spoil Disposal Area)

Figure 1.4 Location of Dumping Area (East Sha Chau Contaminated Mud Disposal Site)

Figure 2.1 Location of Air Quality Monitoring Stations

Figure 3.1 Location of Noise Monitoring Stations

Figure 3.2 Location of Manual Noise Monitoring

Appendices

Appendix A Organization Chart

Appendix B Action and Limit Levels for Air Quality and Noise

Appendix C Environmental Monitoring Schedule

Appendix D Air Quality Monitoring Results for August 2005

Appendix E Noise Monitoring Results for August 2005

Appendix F The QA/QC Procedures and Results

Appendix G Event/Action Plans

Appendix H Site Audit Summary

Appendix I Summary of EMIS

Appendix J Tentative Construction Programme

Appendix K Supply and Installation of Submarine Gas Pipeline – Monthly EM&A Report for August 2005 prepared by the Consultant as one of the ET Members

EXECUTIVE SUMMARY

This is the fifty-third monthly Environmental Monitoring and Audit (EM&A) report for the Project “Construction of Lamma Power Station Extension” prepared by the Environmental Team (ET). This report presents the results of impact monitoring on air quality and noise for the said project in August 2005.

After successful completion of post-project monitoring in September 2002, no further marine water quality monitoring for the reclamation works would be required.

Air and noise monitoring were performed. The results were checked against the established Action/Limit (AL) levels. An on-site audit was conducted once per week. The implementation status of the environmental mitigation measures, Event/Action Plan and environmental complaint handling procedures were also checked.

Construction Activities Undertaken

Construction activities for Lamma Extension during the reporting month are tabulated as follows:

Item	Construction Activities
Unit L9 Civil and Building Works	Main Station Building, 275kV Switching Station, Shunt Reactor, Chimney, Drainage & Road, Fire Services Water Tank and Fire Pump House, C.W. Culvert System & Equipment Room, C.W. Pump Equipment Room, Gas Receiving Station, Pipe & Cable Rack and Lamma Power Station Addition and Alteration (LPS A&A) Works
Unit L9 Mechanical Erection	Erection of HRSG, Steam Turbine, Gas Turbine, Generator, Condenser, Aux Equipment, Air duct / Inlet Filter, HRSG Inlet Duct and Piping Support / Piping Erection; Insulation Work; and Installation of Platform, Pipe Rack and Intake Aux Equipment
Unit L9 Electrical, Instrumentation & Control Erection	Busduct Installation, Control Panel/Marshalling Panel/Battery & Rack Installation, Cable Tray & Earthing Installation and Cable Laying & Termination and Transformer Installation
275kV Switching Station Erection	Materials Delivery & Installation of GIS and Shunt Reactors
Transmission System	Site formation work and tunnel excavation at the Lamma Power Station Cable Duct No.1, cable landing points N2, N4 & N5, filling of Type 2 and Type 1 rockfill at N2 and N4 respectively
Gas Pipeline	Rock Dumping
Miscellaneous	Slurry ash piping & filling

Environmental Monitoring Works

One (1) dust monitoring event was re-scheduled in the reporting month as shown in the following table:

Monitoring work	Monitoring Location	Original Schedule	Makeup Sampling	Reasons
24 hour TSP sampling	AM2	29/08/2005	31/08/2005	Failure of TSP sampler.

Other than the above incident, all monitoring work at designated stations was performed as scheduled satisfactorily.

Air Quality

No exceedance of Action/Limit levels on 1-hour TSP and 24-hour TSP for air quality was recorded in the month.

Noise

Construction work for Lamma Extension was carried out during the restricted hours including evening-time, holidays and night-time under valid Construction Noise Permits. No exceedance of Action and Limit levels for noise arising from the construction of Lamma Extension and transmission system was recorded in the month.

Site Environmental Audit

Independent Environmental Checker (IEC) conducted a site inspection on 24/08/2005. The inspection result is attached in Appendix H.

Site audits were carried out on a weekly basis to monitor environmental issues on the construction site. The site conditions were generally satisfactory. All required mitigation measures were implemented.

Environmental Licensing and Permitting

Description	Permit No.	Valid Period		Issued To	Date of Issuance
		From	To
Varied Environmental Permit	EP-071/2000/C	18/05/05	-	HEC	18/05/05
Construction Noise Permit	GW-RS0097-05	21/02/05	09/08/05	Contractor	18/02/05
Construction Noise Permit	GW-RE0018-05	25/02/05	24/08/05	Contractor	07/02/05
Construction Noise Permit	GW-RS0013-05	25/02/05	24/08/05	Contractor	21/02/05
Construction Noise Permit	GW-RN0062-05	02/03/05	01/09/05	Contractor	01/03/05
Construction Noise Permit	GW-RS0139-05	17/03/05	16/09/05	Contractor	17/03/05
Construction Noise Permit	GW-RS0146-05	21/03/05	20/09/05	Contractor	21/03/05
Construction Noise Permit	GW-RS0242-05	29/04/05	28/09/05	Contractor	27/04/05
Construction Noise Permit	GW-RS0243-05	29/04/05	28/09/05	Contractor	27/04/05
Construction Noise Permit	GW-RS0246-05	29/04/05	09/10/05	Contractor	29/04/05
Construction Noise Permit	GW-RS0317-05	26/05/05	25/11/05	Contractor	26/05/05
Construction Noise Permit	GW-RS0318-05	26/05/05	25/11/05	Contractor	26/05/05
Construction Noise Permit	GW-RS0416-05	10/07/05	09/01/06	Contractor	30/06/05
Construction Noise Permit	GW-RS0424-05	15/07/05	14/01/06	Contractor	07/07/05
Dumping Permit	EP/MD/05-051	01/03/05	31/08/05	Contractor	28/01/05
Dumping Permit	EP/MD/05-115	01/03/05	31/08/05	Contractor	22/02/05
Dumping Permit	EP/MD/06-025	03/08/05	02/09/05	Contractor	01/08/05
Registration of Chemical Waste Producer	WPN5213-912-P2781-07	11/06/04	-	Contractor	11/06/04
Registration of Chemical Waste Producer	WPN5213-912-K2801-03	15/09/04	-	Contractor	15/09/04
Registration of Chemical Waste Producer	WPN5517-912-T2007-01	08/12/92	-	Contractor	08/12/92
Registration of Chemical Waste Producer	WPN5213-912-W2852-09	25/01/05	-	Contractor	25/01/05
Registration of Chemical Waste Producer	WPN4111-912-M2534-09	20/06/05	-	Contractor	20/06/05
WPCO Discharge Licence	EP890/W2/XD020	22/11/04	30/11/09	Contractor	22/11/04

Implementation Status of Environmental Mitigation Measures

Environmental mitigation measures for the construction activities as recommended in the EM&A manual were implemented in the reporting month.

Environmental Complaints

No complaint against the construction activities was received in the reporting month.

Future Key Issues

The future key issues to be considered in the coming month are as follows:

Unit L9 Civil and Building Works

- to continue monitoring the noise level during construction and to ensure compliance with the CNP’s already obtained;

- to continue executing the preventive measures for avoiding noise exceedance and keep monitoring/ reviewing the performance;

- to monitor and review the sufficiency of the dust suppression measures provided and increase the resources accordingly if necessary;

Unit L9 Mechanical Erection

- to continue monitoring the noise level during construction

- to continue executing the preventive measures for avoiding noise exceedance and keep monitoring/ reviewing the performance;

- to monitor and review the sufficiency of the dust suppression measures provided and increase the resources accordingly if necessary;

Unit L9 Electrical Erection

- to continue monitoring the noise level during construction

- to continue executing the preventive measures for avoiding noise exceedance and keep monitoring/ reviewing the performance;

- to monitor and review the sufficiency of the dust suppression measures provided and increase the resources accordingly if necessary;

275KV Switching Station Erection

- to continue monitoring the noise level during construction

- to continue executing the preventive measures for avoiding noise exceedance and keep monitoring/ reviewing the performance;

- to monitor and review the sufficiency of the dust suppression measures provided and increase the resources accordingly if necessary;

Transmission System

- to continue monitoring the noise level during construction;

- to continue executing the preventive measures for avoiding noise exceedance and keep monitoring/ reviewing the performance;

- to monitor and review the sufficiency of the dust suppression measures provided and increase the resources accordingly if necessary;

- to closely monitor the construction activities in order to avoid disturbance to the rare plants;

- to provide temporary fire fighting equipment for prevention of fire within the work sites.

Concluding Remarks

The environmental performance of the project was generally satisfactory.

1. INTRODUCTION

1.1 Background

The Environmental Team (hereinafter called the “ET”) was formed within the Hongkong Electric Co. Ltd (HEC) to undertake Environmental Monitoring and Audit for “Construction of Lamma Power Station Extension” (hereinafter called the “Project”). Under the requirements of Section 6 of Environmental Permit EP-071/2000/C, an EM&A programme for impact environmental monitoring set out in the EM&A Manual (Construction Phase) is required to be implemented. In accordance with the EM&A Manual, environmental monitoring of air quality, noise and water quality and regular environmental audits are required for the Project. As the post-project marine water monitoring was successfully completed in September 2002, no further water quality monitoring for the reclamation works would be required.

The Project involves the construction of a gas-fired power station employing combined cycled gas turbine technology, forming an extension to the existing Lamma Power Station. The key elements of the Project including the construction activities associated with the transmission system and submarine gas pipeline are outlined as follows.

· dredging and reclamation to form approximately 22 hectares of usable area;

· construction of six 300MW class gas-fired combined cycle units;

· construction of a gas receiving station;

· construction of a new transmission system linking the Lamma Extension to load centres on Hong Kong Island;

· laying of a gas pipeline for the supply of natural gas to the new power station

This report summarizes the environmental monitoring and audit work for the Project for the month of August 2005.

1.2 Project Organisation

An Environmental Management Committee (EMC) has been set up in HEC to oversee the Project. The management structure includes the following:

· Environmental Protection Department (The Authority);

· Environmental Manager (The Chairman of the Environmental Management Committee);

· Engineer;

· Independent Environmental Checker (IEC);

· Environmental Team (ET);

· Contractor.

The project organisation chart for the construction EM&A programme is shown in Appendix A.

1.3 Construction Works undertaken during the Reporting Month

Construction activities for Unit L9 civil and building works were for the Main Station Building, 275kV Switching Station, Shunt Reactor, Chimney, Drainage & Road, Fire Services Water Tank and Fire Pump House, C.W. Culvert System & Equipment Room, C.W. Pump Equipment Room, Gas Receiving Station, Pipe & Cable Rack and LPS A&A Works. Construction activities for Unit L9 mechanical works were the erection of HRSG, Steam Turbine, Gas Turbine, Generator, Condenser, Auxiliary Equipment, Air duct / Inlet Filter, HRSG Inlet Duct, Piping Support / Piping, Insulation Work, and installation of Platform, Pipe Rack, and Intake Auxiliary Equipment. Construction activities for Unit L9 electrical, instrumentation & control erection were Busduct installation, Control Panel / Marshalling Panel / Battery & Rack installation, Cable Tray & Earthing installation, Cable Laying & Termination and Transformer Installation. The construction activities for 275KV Switching Station erection were materials delivery & installation of GIS and Shunt Reactors. Construction activities for Unit L9’s associated transmission system were site formation work and tunnel excavation at the Lamma Power Station Cable Duct No.1, cable landing points N2, N4 & N5, and Type 2 and Type 1 rockfill at N2 and N4 respectively and the dredging/excavation of submarine cable trench outside I1 and N5 Landing Points. A separate monthly EM&A report for submarine pipeline prepared by the consultant, as one of ET members, is shown in Appendix K. Layout plans for construction site and transmission system are shown in Figure 1.1 and Figure 1.2 respectively. Uncontaminated and contaminated materials were dumped at the assigned locations within the South Cheung Chau Spoil Disposal Area and East Sha Chau Contaminated Mud Disposal Site respectively. Figure 1.3 and Figure 1.4 show the dumping locations in August 2005.

The main construction activities carried out during the reporting month and the corresponding environmental mitigation measures are summarized in Table 1.1. The implementation of major mitigation measures in the month is provided in Appendix I.

Table 1.1 Construction Activities and Their Corresponding Environmental Mitigation Measures

Item	Construction Activities	Environmental Mitigation Measures
Unit L9 Civil and Building Works
1.	Main Station Building	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
2.	275kV Switching Station	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
3.	Shunt Reactor	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
4.	Chimney	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
5.	Drainage & Road Works	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
6.	Fire Services Water Tank and Fire Pump House	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
7.	C.W. Culvert System & Equipment Room	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
8.	C.W. Pump Equipment Room	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
9.	Gas Receiving Station	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
10.	Pipe & Cable Rack	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
11.	LPS A&A Works	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
Construction of Transmission System
12.	Site formation work and tunnel excavation at the Lamma Power Station Cable Duct No.1, cable landing points N2, N4 & N5	Air Quality - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Terrestrial Ecology - Special care and close monitoring to avoid disturbances to the rare plant species. - Temporary fire fighting equipment provided within the work area during construction.
13.	Filling Type 2 and Type 1 rockfill at N2 and N4 respectively	Noise - General noise mitigation measures employed at all work sites throughout the construction phase.
Unit L9 Mechanical Erection
14.	HRSG Erection	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
15.	Steam Turbine Erection	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
16.	Gas Turbine Erection	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
17.	Generator Erection	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
18.	Condenser Erection	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
19.	Auxiliary Equipment Erection	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
20.	Air duct / Inlet Filter	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
21.	HRSG Inlet Duct	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
22.	Piping Support / Piping Erection	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
23.	Insulation Work	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
24.	Platform Installation	Air - Dust suppression measures implemented. Noise - General noise mitigation measures employed at all work sites throughout the construction phase. Waste Management - Waste Management Plan submitted and implemented.
25.	Pipe Rack Installation	Air