Contents

1                      Introduction                                                                          

1.1                   Purpose of The Manual                                                    

1.2                   Project Description                                                           

1.3                   Objectives of the EM&A Programme                          

1.4                   Scope of The EM&A Programme                                    

1.5                   Organisation and Structure of the EM&A Programme  

1.6                   Structure of the EM&A Manual                                   

2                      EM&A General Requirements                                         

2.1                   Introduction                                                                          

2.2                   EM&A                                                                                            

3                      aIR qUALITY                                                                                

3.1                   Introduction                                                                          

3.2                   Construction Phase                                                           

3.3                   Operational Phase                                                              

4                      Noise Impacts                                                                          

4.1                   Introduction                                                                          

4.2                   Construction Phase                                                           

5                      Water quality                                                                        

5.1                   Introduction                                                                          

5.2                   Construction Phase                                                           

5.3                   Operational Phase                                                              

6                      Sewerage and Sewage Treatment IMPLIcations

6.1                   Introduction                                                                          

6.2                   Construction Phase                                                           

6.3                   Operational Phase                                                              

7                      Waste Managment                                                               

7.1                   Introduction                                                                          

7.2                   Construction Phase                                                           

7.3                   Operational Phase                                                              

8                      ecology                                                                                    

8.1                   Introduction                                                                          

8.2                   Construction Phase                                                           

8.3                   Operational Phase                                                              

9                      Landscape and Visual Impact                                        

9.1                   Introduction                                                                          

9.2                   Design Phase                                                                           

9.3                   Construction and Initial Operational Phases     

10                    cultural Heritage                                                              

10.1                 Introduction                                                                          

10.2                 Construction Phase                                                           

10.3                 Operational Phase                                                              

11                    Site environmental Audit                                                 

11.1                 Site Inspection                                                                       

11.2                 Compliance with Legal and Contractual Requirements        

11.3                 Environmental Complaints                                            

11.4                 Log-Book                                                                                  

12                    Reporting                                                                                 

12.1                 General                                                                                    

12.2                 Baseline Monitoring Report                                          

12.3                 Monthly EM&A Reports                                                     

12.4                 Quarterly EM&A Summary Reports                            

12.5                 Annual EM&A Review Report                                          

12.6                 Final EM&A Summary Report                                           

12.7                 Data Keeping                                                                           

ANNEXES

Annex A       Implementation Schedule

Annex B         Site Inspection Proforma

Annex C         Stream Monitoring Checklist

Annex D         Audit Checklist

Annex E         Complaint Log

Annex F         Noise Monitoring Field Record Sheet

 

 

1                                            Introduction

1.1                                      Purpose of The Manual

This Environmental Monitoring and Audit (EM&A) Manual (“the Manual”) has been prepared by ERM-Hong Kong, Limited (ERM) on behalf of Sha Lo Tung Development Company Ltd (SLTDC).  The Manual is a submission as part of the Environmental Impact Assessment (EIA) Study of the Pilot Project for Public – Private Partnership Conservation Scheme, Sha Lo Tung Valley, Tai Po (hereafter referred to as “the Project”).

The Manual has been prepared with reference to the EIA Study Brief (No. ESB-206/2009) and Technical Memorandum of the Environmental Impact Assessment Process (EIAO-TM).  The purpose of the Manual is to provide information, guidance and instruction to personnel charged with environmental duties and those responsible for undertaking EM&A work during the construction and operation phases of the Project.  It provides systematic procedures for monitoring and auditing of the potential environmental impacts that may arise from the Project.

1.2                                      Project Description

1.2.1                                The Case for Nature Conservation

The New Nature Conservation Policy (NNCP) of the Government aims at regulating, protecting and managing natural resources that are important for the conservation of biological diversity of Hong Kong in a sustainable manner, taking into account social and economic considerations, for the benefit and enjoyment of the present and future generations of the community.  One of the objectives of the NNCP is to enhance conservation of ecologically important sites under private ownership.  This objective can be achieved through the present proposal by total surrender of the land with valuable habitats in the Public-Private Partnership (PPP) site by the project proponent to the government.  This would be solely for nature conservation purpose and a long term viable and sustainable conservation management plan prepared and implemented by Green Power, and associated ecological experts with proven track record in nature conservation and education, the details of which are outlined in the Conservation Management Plan (Annex A of the EIA Report).

The Policy also discusses how the natural environment provides vital resources for recreation, tourism and educational activities.  There is clear recognition that providing opportunities for Hong Kong people to participate in these conservation-led activities is increasingly important as urbanization continues.

1.2.2                                The Project

The Project includes three inter-related components: Ecological Reserve, Development Site and Sha Lo Tung Road Improvement (Figure 1.1).  The Proponent, the Sha Lo Tung Development Company (SLTDC) and the Conservation Agent, Green Power (GP), propose to set up an Ecological Reserve (approximately 52.5 ha, accounting for more than 92% of the entire Valley) in Sha Lo Tung (SLT) Valley.  The SLTDC intends to dedicate their private housing lots (approximately 0.8 ha) and private agricultural lots (approximately 26 ha) in the Valley and agricultural lots in the adjacent Country Park (approximately 2 ha) for conservation purposes and establish an Ecological Reserve on ecologically sensitive land dedicated by SLTDC as well as government land.  The Ecological Reserve will maintain, protect, restore and enhance the ecological resources of the SLT Valley.  This will be achieved by preventing unauthorised incompatible activities, managing and restoring habitats at the “optimal” succession state, and by enhancing grassland and woodland habitat.  Additionally, a Nature Interpretation Centre providing nature education activities to promote awareness, appreciation and understanding of the ecological value of the area, will be built adjacent to the Ecological Reserve in the Development Site.  The conservation management and funding of the SLT Ecological Reserve will be overseen by the Government statutory fund. 

The Ecological Reserve, approximately 52.5 ha, provides an opportunity to enhance Sha Lo Tung Valley’s environment for the benefit of the community and boost its ecological value.  Biodiversity conservation is the core focus of the Public Private Partnership (PPP) programme where value-added activities such as conservation education, will be integrated into the management strategy of Sha Lo Tung Valley, when and where appropriate.  It can be achieved by adopting a Conservation Management Plan (CMP) which prescribes management measures to assist in safeguarding the ecological value of the area in perpetuity for the people of Hong Kong (Figure 1.2).  A summary of the CMP is presented in the following sections.

The Development Site of approximately 4.1 ha is outside of the Country Park and Conservation Area. Besides the Nature Interpretation Centre, the Development Site accommodates the necessary development concession in the form of a Multi-Cultural Education Retreat cum Columbarium (with a development footprint of approximately 1.625 ha or 39.6% of the total area of the Development Site (includes the Nature Interpretation Centre, public parking, footpaths, landscaping areas and associated site formation) in a lower ecological value area at the entrance to the Valley (Figure 1.3).  These concession facilities provide revenue to payback the upfront capital injected by the SLTDC to sustain initial set up and long term operation funding of the Ecological Reserve.

Sha Lo Tung Road Improvement also lies outside of the Country Park and Conservation Area.  The existing Sha Lo Tung Road (approximately 2.3 km) will be upgraded to Single Track standard with the minimum required number of passing bays to meet the requirements of the Transport Department and Fire Services Department and provide safe public access to the Ecological Reserve, Development Site and Country Park.

Indicative Works Programme

The construction works are anticipated to commence in 2011/2012.  The works programme and the work sequence of the Project will be undertaken as follows:

·           Ecological Reserve – The enhancement work will be undertaken immediately once the commencement of the Project is confirmed in order to provide the greatest conservation and ecological benefit.  The Conservation Management Plan and the priority of the enhancement works shall be approved by the Government statutory fund prior to the commencement of the enhancement works.  The minor improvement to the footpath, construction and installation of the temporary footbridge and fencing around broken village houses and structures at Lei Uk will be completed within 3 months (during the dry season).

·           Sha Lo Tung Road Improvement – The road improvement works will be divided into three phases.  Each phase of the road works will be constructed generally in sequence with each will take approximately 8 to 9 months and overlap at certain periods of time.

·           Development Site – The site formation works will be carried out in three stages after Sha Lo Tung Road Improvement: Stage 1 (approximately 6 months), Stage 2 (approximately 5 months) and Stage 3 (approximately 6 months). The duration of each of the three stages will overlap at certain periods of time so that the earthworks (soil and excavation and filling works) will only be undertaken during the dry season (November to March).

1.3                                      Objectives of the EM&A Programme

The potential environmental impacts associated with the Project have been assessed and described in the EIA Report.  The EIA Report also specifies the mitigation measures required to comply with the environmental criteria.  These mitigation measures and their implementation requirements are presented in the Implementation Schedule (see Annex A).  The EIA recommends that an EM&A programme be implemented to assess the effectiveness of measures and to confirm that there will be no adverse environmental impacts during the construction and operation of the Project.  It is also recommended that regular site audits be undertaken during construction and operation phases to check whether good site practices are properly implemented to prevent adverse environmental impacts.  Any activities that have a potential to cause adverse environmental impacts are identified before the adverse impacts occurred.  Ad-hoc visits to the impacted sites should also be made in response to any complaints or reported non-compliance with environmental standards to ensure that prompt actions are taken to address the impacts. 

This Manual provides details of the EM&A requirements that have been recommended in the EIA Report.  The main objectives of the EM&A programme are to:

·           verify the environmental impacts predicted in the EIA Report;

·           monitor the performance of the Project and the effectiveness of mitigation measures;

·           determine Project compliance with regulatory requirements and standards;

·           provide an early indication should any of the environmental control measures or practices fail to achieve the required standards;

·           take remedial action if unexpected problems or unacceptable impacts arise;

·           provide a database against which any short or long term environmental impacts of the Project can be determined; and 

·           provide data against which environmental audits may be undertaken.

1.4                                      Scope of The EM&A Programme

Table 1.1 summarises the requirements at various phases of the Project.

Table 1.1        Summary of EM&A Requirements

Parameter

EM&A Phase

 

Pre-Construction Phase

Construction Phase

Post Construction Phase

Operational Phase

Air Quality (Dust)

 

P

 

 

Noise

 

P

 

 

Water Quality

P

P

P

P

Sewerage and Sewage Treatment Implications

 

P

 

P

Waste Management

 

P

 

P

Ecology

P

P

P

P

Landscape and Visual

 

P

 

P

Cultural Heritage

 

P

 

 

The scope of the EM&A programme is to:

·           implement regular monitoring and site audit requirements and undertake additional or ad hoc monitoring if non compliance identified;

·           evaluate and interpret all environmental monitoring data on a regular basis to provide an early indication should any of the environmental control measures or practices fail to achieve the required performance standards, and to verify the environmental impacts predicted in the EIA Report;

·           liaise with, and provide environmental advice (as requested or when otherwise necessary) to construction/operation site staff on the comprehension and consequences of the environmental audit;

·           identify and resolve environmental issues that may arise from the Project;

·           investigate environmental complaints associated with the Project;

·           check and evaluate the Contractor's overall environmental performance, and the effectiveness of the remedial actions; and

·           prepare and submit EM&A reports which summarise project monitoring and auditing data, with full interpretation illustrating the acceptability or otherwise of any environmental impacts and identification or assessment of the implementation status of agreed mitigation measures.

1.5                                      Organisation and Structure of the EM&A Programme

1.5.1                                Project Organisation

The proposed organisation of the personnel involved in the EM&A process is illustrated in Figure 1.4. 

Figure 1.4       Organisation Chart


The roles and responsibilities of the various parties are summarised below:

·            Project Proponent (PP): Sha Lo Tung Development Company Ltd.

The Project Proponent should

-          supervise the Contractor’s activities and ensure that the requirements in the EM&A Manual and the Contract Document are fully complied with; 

-          develop appropriate contract clauses to ensure that the Contractor will have qualified professionals to interface with the Environmental Representative (ER) / Independent Environmental Checker (IEC) to fulfil the to fulfil the EIA/EP requirements;

-          participate in join site inspections undertaken by the Conservation Specialist (CS), Environmental Team (ET), IEC and the Contractor (C), whenever requested;

-          inform the C when action is required to reduce impacts in accordance with the Event and Action Plans; and

-          adhere to the procedures for carrying out investigation of complaints.

·            Contractor:  The Contractor employed by the Project Proponent (PP) should work within the scope of the construction contract and other tender conditions that are related to the environmental requirements.

The Contractor should:

-          implement environmental controls and mitigation as set out in this manual as well as any additional measures necessary for compliance with the environmental control standards;

-          provide assistance to the ET and CS in carrying out monitoring;

-          submit proposals on mitigation measures in case of exceedances of Action and Limit levels in accordance with the Event and Action Plans;

-          implement measures to reduce impact where Action and Limit levels are exceeded;

-          implement the corrective actions instructed by PP, CS, ER or ET;

-          participate in joint site inspections undertaken by the ET, CS, IEC whenever requested; and

-          adhere to the procedures for carrying out complaint investigation.

·            Environmental Representative (ER):  During the construction phase of the project, Green Power will act as ER.  The ER should be independent and should not be in any way connected to the Contractor’s company. 

The ER should:

-          ensure the Contractor’s compliance with the project’s environmental performance requirements during construction of the Project; 

-          compile an updated EM&A Manual and submit to the PP, IEC, EPD and C at least one month before the commencement of construction works; and

-          report to the PP, IEC, EPD and C on a regular basis the progress of the monitoring work and the findings.

·            Environmental Team (ET):  The ET will require suitably qualified support staff to carry out the EM&A programme.  Members of the ET should be independent and should not be in any way connected to the Contractor’s company.  The ET leader should possess at least 7 years experience in EM&A and/or environmental management.  Due to the specialist nature of some of the EM&A works required for this Project, the ET should comprise professionals qualified to undertake the tasks involved.  Thus, the ET should include personnel experienced in noise monitoring, water quality monitoring and ecology monitoring.

The ET should:

-          monitor the various environmental parameters as required by this or subsequent revisions to the Manual;

-          assess the EM&A data and prepare reports on the findings.  The monitoring reports should be provided to the PP, IEC, EPD and C for review;

-          review the success of the EM&A programme determining the adequacy of the mitigation measures implemented and the validity of the EIA predictions, as well as identify any adverse environmental impacts before they arise;

-          provide advice (if required) to the PP for the development of environmental contract clauses for Contractor’s contract;

-          review the Contractor’s working programme and methodology and comment as necessary and also recommend suitable mitigation measures to the C in the case of exceedance of Action and Limit levels in accordance with the Event and Action Plans;

-          adhere to the procedures for carrying out investigation of complaints;

-          audit the trip tickets recorded by the waste disposal stations for all dumping activities.  This ensures that the waste is properly disposed of at the designated locations; and

-          the ET Leader will keep a contemporaneous log-book and record each and every instance or circumstance or change of circumstances which may affect the environmental impact assessment and every non-conformance with the recommendations of the EIA Report.

·            Conservation Specialist (CS):  Green Power will provide a CS for the ET to stay on-site to conduct environmental audits during the construction and operation phases.  The CS should be a person who has at least 5 years experience in environmental monitoring and auditing (EM&A) or environmental management.

The CS should:

-          inspect the site daily to check the implementation and effectiveness of proposed mitigation measures, in particular the temporary drainage system and runoff control measures.  The person will have the authority to stop the construction works should the implementation and effectiveness of the proposed mitigation measures cannot be satisfied.  Preliminary Site Inspection Proforma and Audit Checklist are presented in this Manual.  The site audits should cover seven key environmental aspects, where appropriate, including air quality, noise, water quality, sewerage and sewage treatment, waste management, ecology, landscape and visual, cultural heritage, environmental complaints and housekeeping; and

-          report on a daily basis the environmental site audit observations to the ER, IEC and EPD (copy to the PP and the C).

·            Independent Environmental Checker (IEC):  An Independent Environmental Checker (IEC) will be appointed by the PP and the IEC should verify the overall environmental performance of the Project.  The IEC should be responsible to certify all environmental submissions to the PP and EPD.  The IEC should advise the PP and EPD on environmental issues related to the project.  The IEC should possess at least 7 years experience in EM&A and/or environmental management.

The IEC should:

-          review the EM&A works performed by the ET (at least at monthly intervals);

-          carry out random sample check and audit the monitoring activities and results (at least at monthly intervals);

-          report the audit/site inspection results and other environmental performance reviews to PP;

-          review the EM&A reports submitted by the ET;

-          review the effectiveness of environmental mitigation measures and project environmental performance;

-          check the mitigation measures recommended in the EIA Report and EM&A Manual, and ensure they are properly implemented in timely manner when required

-          review the proposal on mitigation measures submitted by the Contractor; and

-          adhere to the procedures for carrying out complaint investigation.

·            EPD: As the EIAO Authority.  The EPD will be the authority to approve all submissions under the EIAO.

1.6                                      Structure of the EM&A Manual

The remainder of the Manual is set out as follows:

·           Section 2 sets out the EM&A general requirements;

·           Section 3 details the requirements for air quality;

·           Section 4 details the requirements for noise;

·           Section 5 details the requirements for water quality;

·           Section 6 details the requirements for sewerage and sewage treatment implications;

·           Section 7 details the requirements for waste management;

·           Section 8 details the requirements for ecology;

·           Section 9 details the requirements for landscape and visual impacts;

·           Section 10 details the requirements for cultural heritage;

·           Section 11 describes the scope and frequency of site auditing;

·           Section 12 details the EM&A reporting requirements;

·           Annex A contains the implementation schedule that summarises all mitigation measures proposed in the EIA Report;

·           Annex B contains the site inspection proforma;

·           Annex C contains the stream monitoring checklist;

·           Annex D contains the site audit checklist;

·           Annex E contains the Complaints Log; and,

·           Annex F contains the noise monitoring field record sheet.

The Manual is an evolving document that should be updated to maintain its relevance as the Project progresses.  The primary focus for these updates will be to ensure the impacts predicted and the recommended mitigation measures remain consistent and appropriate to the manner in which the works are to be carried out.

.

2                                            EM&A General Requirements

2.1                                      Introduction

The general requirements of the EM&A programme are described in this section.  The scope of the programme is developed with reference to the findings and recommendations of the EIA Report.

2.2                                      EM&A

The potential environmental impacts and the implementation of the recommended mitigation measures for the construction and operation of the Project should be monitored through the EM&A programme specified in this Manual. 

The EM&A programme will include regular and ad-hoc site inspections/ audits and environmental monitoring.  The programme also include the mechanisms to review and assess the Contractor’s environmental performance, ensuring that the recommended mitigation measures have been properly implemented, and that timely resolution of received complaints are managed and controlled in a manner consistent with the recommendations of the EIA Report.

2.2.1                                Environmental Monitoring

The environmental monitoring work throughout the Project period will be carried out in accordance with this EM&A Manual and should be carried out by the ET/CS.  The monitoring should be focused on the following aspects:

·           construction noise monitoring for two representative NSRs (N1 and N5);

·           baseline, impact, post-project and operation phase monitoring on water quality;

·           baseline, impact, post-project and operation phase ecological monitoring; and

·           construction archaeological monitoring and potential vibration monitoring.

These are discussed further in Sections 3 to 10 of this Manual.

2.2.2                                Compliance with Action and Limit Levels

The action and limit levels should be defined for environmental monitoring at designated monitoring locations exceeding which a prescribed response should be required.  Individual action and limit levels should be quantitatively defined for the respective environmental monitoring parameters according to the following basic principles:

Action Level

Action levels indicate deteriorating ambient environmental quality potentially due to the Project implementation.  It acts as a sign to trigger stepped up monitoring and appropriate remedial actions in order to rectify any mal-practices or non-conformance of Project activities thereby preventing the deterioration of environmental quality and to resume the ambient environmental quality back to normal levels.

Limit Level

Limit levels are the statutory and/or contractual levels below which environmental conditions are considered unacceptable.  If limit levels were exceeded, the relevant part of the works should not be continued without implementation of immediate remedial action, including a critical review of plant and working methods.

2.2.3                                Event and Action Plans

The purpose of the Event and Action Plans (EAPs) is to provide, in association with the EM&A activities, procedures for ensuring that if any significant environmental incident (either accidental or through inadequate implementation of mitigation measures) on the part of the Contractor does occur, the cause should be quickly identified and remediated, and the risk of a similar event recurring is reduced.

2.2.4                                Site Inspections/Audits

In addition to monitoring works as a means of assessing the ongoing environmental performance of the Project, the ET/CS and IEC should undertake site inspections and audits of on-site practices and procedures.  The primary objectives of the site inspection and audit programme are to ensure the good site practices and mitigation measures recommended in the EIA Report are properly implemented and to assess the effectiveness of these measures. 

The findings of site inspections and audits should be made known to the Contractor at the time of the inspection to enable the rapid resolution of identified non-compliances.  Non-compliances, and the corrective actions undertaken, should be reported in the monthly EM&A reports.

Section 11 of this Manual presents details of the scope and frequency of on-site inspections and defines the range of issues that the audit protocols should be designed to address.

2.2.5                                Enquiries, Complaints and Requests for Information

Enquiries, complaints and requests for information can be expected from a wide range of individuals and organisations including members of the public, Government departments, the press and television media and community groups. 

All enquiries concerning the environmental impacts of the Project, irrespective of how they are received, should be reported to the PP and IEC and directed to the Contractor and ET/CS who should set up procedures for handling, investigation and storage of such information.  The following steps should be followed:

(a)      The ET Leader should notify the IEC, PP, EPD and C of the nature of the enquiry.

(b)      An investigation should be initiated to determine the validity of the complaint and to identify the source(s) of the problem.

(c)      The ET Leader and the Contractor should undertake the following steps, as necessary:

·           investigate and identify source(s) of the problem;

·           if considered necessary by the IEC and EPD, undertake additional monitoring to verify the existence and severity of the alleged complaint;

·           identify necessary remedial measures and implement as soon as possible;

·           repeat the monitoring to verify effectiveness of mitigation measures; and

·           repeat review procedures to identify further possible areas of improvement if the repeat monitoring results continue to substantiate the complaint.

(d)      The outcome of the investigation and the actions taken should be documented on a complaint proforma (see Annex E) and should be verified by the IEC.  A formal response to each complaint received should be prepared by the Contractor within a maximum of five working days and submitted to the IEC, PP and EPD for review.  The PP will notify the concerned person(s) of the findings of the complaint investigation and the actions taken, if required.

(e)      All enquiries/complaints that trigger this process should be reported in the monthly EM&A reports, which should include results of investigations undertaken by the ET Leader and the Contractor, and details of the measures taken, and additional monitoring results (if deemed necessary).  It should be noted that the receipt of complaint or enquiry should not be, in itself, a sufficient reason to introduce additional mitigation measures.  

In all cases the complainant will be notified of the findings of the investigation.

2.2.6                                Reporting

With respect to the identified potential impacts and the nature and frequency of the EM&A to be undertaken, it is considered that real-time reporting of the monitoring data through a dedicated website is not applicable.  However, the monitoring data should be uploaded to the Project website at regular interval agreed by the Contractor, EPD and the PP. 

Monthly EM&A reports prepared by the ET/CS should be certified by the IEC prior to submission to the Contractor, IEC, PP and EPD.  The monthly EM&A reports should be prepared and submitted within 10 working days of the end of each reporting month.  Additional details on reporting protocols are presented in Section 12.

2.2.7                                Cessation of EM&A

The cessation of EM&A programme is subject to the satisfactory completion of the EM&A Final Review Report, agreement with the IEC and approval from Environmental Protection Department (EPD), Agriculture, Fisheries and Conservation Department (AFCD) and Water Supplies Department (WSD).

3                                            aIR qUALITY

3.1                                      Introduction

In accordance with the recommendations of the EIA, mitigation measures have been proposed during the construction and operational phases of the Project.  Details of the mitigation measures are presented in Annex A - Implementation Schedule.

3.2                                      Construction Phase

No construction phase air monitoring is required for the Project.  However, regular environmental site audit is required to ensure the implementation of dust control measures detailed in Annex A.

3.3                                      Operational Phase

No EM&A programme for air quality is required during operational phase.

4                                            Noise Impacts

4.1                                      Introduction

In accordance with the recommendations of the EIA, mitigation measures to control impacts from noise generating works have been proposed during the construction phase of the Project.  Details of the mitigation measures are presented in Annex A - Implementation Schedule.

4.2                                      Construction Phase

4.2.1                                Development Site and Sha Lo Tung Road Improvement

Noise monitoring is recommended to ensure compliance with the noise criterion at the NSR and the monitoring requirements are detailed below:

Noise mointoring is recommended at two locations to ensure compliance with the noise criterion at the NSRs and the details are as follows:

Noise Parameters

The construction noise level shall be measured in terms of the A-weighted equivalent continuous sound pressure level (Leq).  Leq(30 min) shall be used as the monitoring parameter for the time period between 0700-1900 hours on normal weekdays.  For all other time periods, Leq(5 min) shall be employed for comparison with the NCO criteria.

As supplementary information for data auditing, statistical results such as L10 and L90 shall also be obtained for reference.  A sample data record sheet is shown in Annex F for reference.

Monitoring Equipment

As referred to in the Technical Memorandum (TM) issued under the Noise Control Ordinance (NCO), sound level meters in compliance with the International Electrotechnical Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications shall be used for carrying out the noise monitoring.  Immediately prior to and following each noise measurement the accuracy of the sound level meter shall be checked using an acoustic calibrator generating a known sound pressure level at a known frequency.  Measurements may be accepted as valid only if the calibration level from before and after the noise measurement agrees to within 1.0 dB.  Noise measurements should not be made in accordance with standard acoustical principles and practices in relation to weather conditions.

Monitoring Location

The noise monitoring locations have been shown in Figure 4.1  The status and location of noise sensitive receiver may change after issuing this manual.  If such cases exist, the ET Leader shall propose updated monitoring locations and seek approval from ER and agreement from the IEC and EPD of the proposal.

When alternative monitoring locations are proposed, the monitoring locations shall be chosen based on the following criteria:

a)    at locations close to the major site activities which are likely to have noise impacts;

b)    close to the noise sensitive receivers; and

c)    for monitoring locations located in the vicinity of the sensitive receivers, care shall be taken to cause minimal disturbance to the occupants during monitoring.

The monitoring station shall normally be at a point 1 m from the exterior of the sensitive receiver building facade and be at a position 1.2 m above the ground.  If there is a problem with access to the normal monitoring position, an alternative position may be chosen, and a correction to the measurements shall be made.  For reference, a correction of +3dB(A) shall be made to the free field measurements.  The ET Leader shall agree with the IEC on the monitoring position and the corrections adopted.  Once the positions for the monitoring stations are chosen, the baseline monitoring and the impact monitoring shall be carried out at the same position.

Impact Monitoring

Weekly noise monitoring shall be carried out at all the designated monitoring stations to obtain one set of 30-minute measurement between 0700-1900 hours.

General construction work carrying out during restricted hours is controlled by CNP system under the NCO.

In case of non-compliance with the construction noise criteria, more frequent monitoring as specified in the Action Plan in Table 6.2 shall be carried out.  This additional monitoring shall be continued until the recorded noise levels are rectified or proved to be irrelevant to the construction activities.

Event and Action Plan for Noise

The Action and Limit levels for construction noise are defined in Table 4.1.  Should non-compliance of the noise quality criteria occur, actions in accordance with the Action Plan in Table 4.2 shall be carried out.


Table 4.1        Action and Limit Levels for Construction Noise Monitoring

Time Period

Action

Limit

0700-1900 hrs on normal weekdays

When one documented compliant is received

75 dB(A)

 

Table 4.2       Event and Action Plan for Noise

EVENT

ACTION

Environmental Team (ET)

Independent Environmental checker (IEC)

Contractor

 

Action Level

1.                   Notify IEC, PP, EPD and Contractor;

2.                   Carry out investigation;

3.                   Report the results of investigation to the IEC, PP, EPD 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.                   Submit noise mitigation proposals to IEC;

2.                   Implement noise mitigation proposals

 

Limit Level

1.                   Notify IEC, PP, EPD, ER and Contractor;

2.                   Identify source;

3.                   Carry out investigation;

4.                   Report the results of investigation to the IEC and Contractor;

5.                   Discuss with the Contractor and formulate remedial measures;

6.                   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.                   Submit noise mitigation proposals to IEC;

2.                   Implement noise mitigation proposals

In addition, regular environmental site audit is required to ensure the implementation of practicable noise control measures, including good site practice, use of quiet PME and adoption of movable noise barriers detailed in Annex A.

4.2.2                                Operation Phase

Results of the operation phase noise assessment indicates that the NSRs will not be affected by the off-site traffic and fixed plant noise sources and therefore noise monitoring is not required. 

5                                            Water quality

5.1                                      Introduction

In accordance with the recommendations of the EIA, mitigation measures have been proposed during the construction and operation of the Project to ensure that the water quality at the WSRs is not impacted by the Project.  Details of the mitigation measures are presented in Annex A - Implementation Schedule. 

In addition, baseline water quality monitoring will be required prior to the commencement of construction activities.  The water quality monitoring programme will be carried out to ensure that any deteriorating water quality is readily detected and timely action taken to rectify the situation.

5.2                                      Construction Phase

5.2.1                                Monitoring Parameters

Measurements of the parameters, as shown in Table 5.1 should be undertaken by the ET/CS at strategic locations in Sha Lo Tung SSSI Stream (Figure 5.1).  This ensures that any deterioration of water quality will be readily detected and timely action will be taken to rectify the situation.  Since only works within the Development Site and Phase 3 of Sha Lo Tung Road Improvement Works have the potential to impact on the Sha Lo Tung SSSI Stream, water quality impact monitoring will be conducted throughout the construction period of Phase 3 of Sha Lo Tung Road Improvement works and the construction period of the Development Site.

Table 5.1      Monitoring Parameters and Frequency for Construction Phase

Parameters

Unit

Monitoring Frequency

Baseline Monitoring

Impact Monitoring

Post-project Monitoring

Parameters to be measured in situ:

pH

-

3 days a week for at least 4 weeks prior to the commencement of construction works of Sha Lo Tung Road Improvement works

3 days a week throughout the construction period of Phase 3 of Sha Lo Tung Road Improvement works and the construction period of the Development Site

 

 

3 days within a week after the completion of the construction works of the Development Site

water temperature

°C

turbidity

NTU

dissolved oxygen (DO)

mg L-1

dissolved oxygen (DO, saturation)

% saturation

Salinity

0/00

Parameter to be measured in laboratory:

suspended solids (SS)

mg L-1

3 days a week for at least 4 weeks prior to the commencement of construction works of Sha Lo Tung Road Improvement works

3 days a week throughout the construction period of Phase 3 of Sha Lo Tung Road Improvement works and the construction period of the Development Site

3 days within a week after the completion of the construction works of the Development Site

oil and grease

mg L-1

once per month throughout the construction period of the Development Site (Note: these parameters are not typical parameters used for construction runoff monitoring but reflect the general water quality conditions)

ammonia nitrogen

mg L-1

total reactive phosphorus

mg L-1

5-day biochemical oxygen demand (BOD5)

mg L-1

chemical oxygen demand (COD)

mg L-1

Escherichia coli (E.coli) (cfu/100mL)

 

cfu 100mL-1

In association with the water quality parameter measurements, relevant data should be recorded, including the monitoring location, time, weather conditions, sampling water depth (m), water flow rate (m3/day) and any special phenomena (provided with photographs if appropriate) and work underway at the construction site.   

5.2.2                                Monitoring Equipment

Dissolved Oxygen and Temperature Measuring Equipment

The instrument should be a portable, weatherproof dissolved oxygen measuring instrument complete with cable, sensor, comprehensive operation manuals, and should be operable from a DC power source.  It should be capable of measuring: dissolved oxygen levels in the range of 0–20 mg L-1 and 0-200% saturation; and a temperature of 0-45 degrees Celsius.

It should have a membrane electrode with automatic temperature compensation complete with a cable of not less than 25 m in length.  Sufficient stocks of spare electrodes and cable should be available for replacement where necessary (for example, YSI model 59 meter, YSI 5739 probe, YSI 5795A submersible stirrer with reel and cable or an approved similar instrument).

Turbidity Measuring Instrument

Turbidity should be measured in-situ by the nephelometric method.  The instrument should be portable and weatherproof using a DC power source complete with cable, sensor and comprehensive operation manuals.  It should have a photoelectric sensor capable of measuring turbidity between 0 - 1000 NTU (for example, Hach model 2100P or an approved similar instrument). The cable should not be less than 25m in length.  The meter should be calibrated in order to establish the relationship between NTU units and the levels of suspended solids.  The turbidity measurement should be carried out on a split water sample from the same water sample collected for suspended solids analysis.

Sampling Equipment for Other Water Quality Parameters

A clean plastic water sampler with capacity of at least 500 mL should be used to take the water samples from the stream.  Water samples for SS, total reactive phosphorus and BOD5 measurement should be contained in high density polythene bottles.  Water samples for oil and grease measurement should be collected in glass bottles and preserved by addition of H2SO4.  Water samples for ammonia nitrogen measurement should be collected in high density polythene bottles and preserved by addition of H2SO4.  All the samples should be packed in ice (cooled to 4°C without being frozen) and delivered to the laboratory as soon as possible after collection.   

pH Measuring Equipment

A portable pH meter capable of measuring a range between 0.0 and 14.0 should be provided to measure pH under the specified conditions (e.g. Orion Model 250A or an approved similar instrument).

Electromagnetic Flow Meter

A hand-held digital electromagnetic flow meter (for example model Flo-mate 2000 or an approved similar instrument) should be provided and used to measure water flow rate during water quality monitoring.  The measurement should be conducted at fixed sampling points and water depth throughout the monitoring programme. 

Positioning Equipment

A hand-held digital Global Positioning System (GPS) together with a suitably scaled map should be provided and used during water quality monitoring.

Calibration of Equipment

All in-situ monitoring instruments should be checked, calibrated and certified by a laboratory accredited under HOKLAS or any other international accreditation scheme before use, and subsequently re-calibrated at monthly intervals throughout all stages of the water quality monitoring.  Responses of sensors and electrodes should be checked with certified standard solutions before each use.  Wet bulb calibration for a DO meter should be carried out before measurement at each monitoring station.

For the onsite calibration of field equipment, the BS 1427:1998, “Guide to Field and on-site test methods for the analysis of waters” should be followed.

Back-up Equipment

Sufficient stocks of spare parts should be maintained for replacements when necessary.  Back-up monitoring equipment should also be available so that monitoring can proceed uninterrupted even when some equipment is under maintenance, calibration, etc.

5.2.3                                Measurement and Analysis

All laboratory works should be carried out in a HOKLAS accredited laboratory.  The determination work should start within 24 hours after the laboratory has collected the water samples.  The results of SS laboratory measurements should be provided to the client within 2 days of the sampling event (48 hours).  The analyses should follow the standard methods as described in APHA Standard Methods for the Examination of Water and Wastewater, 19th Edition, unless otherwise specified (APHA 2540D for SS).

The standard methods for the in-situ and laboratory measurements that should be followed are shown in Table 5.2. 

Table 5.2      Standard Methods for Analysing the Water Quality Parameters

Parameter

Unit

Standard Method specified in TM

Standard Method specified in EPD Marine Report

TM Standards(1) for Group A Inland Waters

Water Quality Objectives (WQO) (2)

DO

mg L-1

APHA 17ed 4500-O G

-

≥4 (flow rate ≤ 2000 m3/day)

4

pH

-

APHA 17ed 4500-H+B

-

6.5-8.5 (flow rate ≤ 2000 m3/day)

6-9

Temperature

°C

-

-

35 (flow rate ≤ 100 m3/day)

30 (flow rate > 100 and  ≤ 2000 m3/day)

-

Turbidity

NTU

 

-

-

-

SS

mg L-1

APHA 17ed 2540 D

In house method based on APHA 20ed 2540 D

10 (flow rate ≤ 100 m3/day)

5 (flow rate > 100 & ≤ 2000 m3/day)

25

Oil and grease

mg L-1

APHA 17ed 5520 C

-

1 (flow rate ≤ 2000 m3/day)

-

Ammonia nitrogen

mg L-1

APHA 17ed 4500-NH3

In house method based on ASTM D3590-89 B

1 (flow rate ≤ 1000 m3/day)

0.5 (flow rate >1000 and ≤ 2000 m3/day)

0.5

Total reactive phosphorus

mg L-1

APHA 17ed 4500-P

In house method based on ASTM D515-88 A (FIA)

1 (flow rate ≤ 10 m3/day)

0.7 (flow rate >10 and ≤ 500 m3/day)

0.5 (flow rate >500 and ≤ 2000 m3/day)

-

BOD5

mg L-1

BS 6068: Section 2.14:1984

In house method based on APHA 18ed 5210 B

10 (flow rate ≤ 100 m3/day)

5 (flow rate > 100 & ≤ 2000 m3/day)

5

COD

mg L-1

ASTM D 1252-88 Test Method B or APHA 17ed 5220 C & D

In house method GL-OR-38 & GL-OR-39, based on ASTM3 D1252-00 A&B (CODCr)

50 (flow rate ≤ 100 m3/day)

20 (flow rate > 100 & ≤ 2000 m3/day)

30

E. coli

cfu 100mL-1

Membrane lauryl sulphate method with in situ urease test for E. coli

In house method, membrane filtration with CHRO Magar Liquid E. coliColiform culture

< 1 (flow rate ≤ 2000 m3/day)

1,000

Note:    (1)    Cap. 358AK, Technical Memorandum Standards for Effluents Discharged into Drainage and Sewerage Systems, Inland and Coastal Waters

             (2)   Ammonia nitrogen should not exceed 0.5 mg L-1 at any time.  The WQO compliance for SS is based on annual median value and E. coli is based on running median, while WQO compliance for other parameters is based on individual measurements.

The submitted information should include pre-treatment procedures, instrument use, Quality Assurance/Quality Control (QA/QC) details (such as blank, spike recovery, number of duplicate samples per-batch etc), detection limits and accuracy.  The QA/QC details should be in accordance with requirements of HOKLAS or another internationally accredited scheme.  It is recommended that a minimum of 10% of the samples should be collected and analysed in duplicate for QA/QC purposes.  Additional duplicate samples may also be required by the EPD and WSD for inter-laboratory calibration.  Remaining samples after analysis should be kept by the laboratory for 3 months in case report analysis is required. 

5.2.4                                Monitoring Locations

Water quality monitoring locations are shown in Figure 5.1 and detailed in Table 5.3 below.  A schedule for water quality monitoring should be prepared by the ET/CS and approved by the EPD and WSD prior to the commencement of the monitoring.

Table 5.3      Locations of Water Quality Monitoring Stations

Monitoring Station

ID

Type

Easting

Northing

Sha Lo Tung Stream

R1-U

Upstream (Control)

836664

837319

 

R1-UM

Upstream (Reference)

836752

837414

 

R1-M

Midstream (Impact)

836898

837450

 

R1-D

Downstream (Gradient)

837103

837534

Note: An active agricultural land was recorded at the downstream of Control Station (R1-U) and just upstream of the Development Site.  The Reference Station (R1-UM) is used to monitor any influence of the farming activities on the water quality, but not for the determination of Event and Action Plan.  The Downstream (Gradient) Station (R1-D) is used to monitor the dilution effect of water pollution and the further potential influence to downstream sections of Sha Lo Tung Stream, but not for the determination of Event and Action Plan.

The water depth in the stream may not be sufficient to take samples at different depths and samples will only be taken at mid-depth. 

Three replicates (3 samples) at each station from each independent sampling event are required for all parameters to ensure a robust statistically interpretable data set.

5.2.5                                Monitoring Frequency

Baseline monitoring should be undertaken once every two days for at least four weeks at the designated stations prior to the commencement of the construction works.  The baseline monitoring should be scheduled to cover different time slot of a day.  Baseline monitoring schedule prepared by the ET/CS should be faxed to the PP, C, EPD and WSD 1 week prior to the commencement of baseline monitoring.

Impact monitoring for the in-situ parameters and SS should be undertaken 3 days per week during the course of construction works whereas the monitoring for other reference parameters (which are not typical parameters used for construction runoff monitoring but reflect the general water quality conditions) including oil and grease, ammonia nitrogen, total reactive phosphorus, BOD5, COD and E. coli which should be carried out on a monthly basis (refer to Table 5.1).  For the monitoring of the in-situ parameters and SS, the intervals between 2 consecutive sets of monitoring should not be less than 36 hours except where there are exceedances of Action and/or Limit Level, in which case monitoring frequency should be increased.  The proposed water quality monitoring schedule prepared by the ET/CS should be faxed to the PP, C, EPD and WSD on or before the first day of the monitoring month.  The EPD and WSD should be notified immediately of any changes in schedule by fax.

Post-project monitoring should be undertaken for 3 days at the designated stations within a week after the completion of the construction works.  The intervals between 2 consecutive sets of monitoring should not be less than 36 hours.  Post-project monitoring schedule prepared by the ET/CS should be faxed to the PP, C, EPD and WSD one week prior to the commencement of post-project monitoring.

5.2.6                                Event and Action Plan

Water quality monitoring results at the Impact Station (R1-D) will be evaluated against the Action and Limit levels shown in Table 5.4.  The Action and Limit Levels should be reviewed after the completion of the baseline monitoring and would be amended, if appropriated.  The proposal for the amendment of the action and limit levels should be submitted to EPD and WSD for agreement.

Table 5.4      Determination of Action and Limit Levels

Parameter

Action Level

Limit Level

DO in mg L-1 to monitor construction runoff and sediment loadings

5%-tile of baseline data

< 4 mg/L or 1%-ile of baseline data (1)

SS in mg L-1 to monitor construction runoff and sediment loadings

120% of Upstream Control Station’s SS or 95%-tile of baseline data

Higher than 130% of Upstream Control Station’s SS or 99%-tile of baseline data (1) or >25 mg/L (2)

Turbidity in NTU to monitor construction runoff and sediment loadings

120% of Upstream Control Station’s turbidity or 95%-tile of baseline data

Higher than 130% of Upstream Control Station’s turbidity or 99%-tile of baseline data

pH to monitor the acidity or basicity of stream water in particular water pollution due to release of cement materials

N/A

<6 or >9 (2)

Oil and Grease in mg L-1 to monitor any contamination due to machinery

Higher than 120% of Upstream Control Station’s oil and grease or 95%-tile of baseline data (2)

Higher than 130% of Upstream Control Station’s oil and grease or 99%-tile of baseline data (2)

or >1 mg/L (3)

Ammonia nitrogen in mg L-1 to monitor nutrient loadings in the stream water

120% of Upstream Control Station’s ammonia nitrogen or 95%-tile of baseline data

Higher than 130% of Upstream Control Station’s ammonia nitrogen or 99%-tile of baseline data (2)

or >0.5 mg/L (3)

Total reactive phosphorus in mg L-1 to monitor any application of fertilizers

120% of Upstream Control Station’s total reactive phosphorus or 95%-tile of baseline data

Higher than 130% of Upstream Control Station’s total reactive phosphorus or 99%-tile of baseline data or >0.5 mg/L (3)

BOD5 in mg L-1 to monitor the level of organic waste in the stream water

120% of Upstream Control Station’s BOD5 or 95%-tile of baseline data

Higher than 130% of Upstream Control Station’s BOD5 or 99%-tile of baseline data or >5 mg/L (2)

COD in mg L-1 to monitor the level of contaminants in the stream water

120% of Upstream Control Station’s COD or 95%-tile of baseline data

Higher than 130% of Upstream Control Station’s COD or 99%-tile of baseline data or >30 mg/L (2)

E. coli in cfu 100mL-1 to monitor the level of faecal contamination in the stream water

95%-tile of baseline data (4)

99%-tile of baseline data (4) or >1,000 cfu 100mL-1

 

Notes:

1.      With reference to Table 3.1 of the Guidelines for Development Projects in Hong Kong.

2.     Adopted the principles on Water Quality Objectives and the Guidelines for Development Projects in Hong Kong.

3.     In accordance with Cap. 358AK, Technical Memorandum Standards for Effluents Discharged into Drainage and Sewerage Systems, Inland and Coastal Waters, Table 3 Standards for effluents discharged into Group A inland waters.

4.     The baseline monitoring scheduled to cover different time slot which can represent the background E. coli concentration in the stream taken into account of the influence of human/ animal activities at Sha Lo Tung.

5.      All the figures given in the table are used for reference only and the figures may amend if the baseline data has significant difference compare with Technical Memorandum Standards for Effluents Discharged into Drainage and Sewerage Systems, Inland and Coastal Waters, Table 3 Standards for effluents discharged into Group A inland waters (in particular for the parameters of Oil and Grease and Total reactive phosphorus).  Approval from relevant departments including EPD and WSD should be obtained for any amendment of the limit level.

Any noticeable change to water quality should be recorded in the data record sheets and should be investigated and remedial actions should be undertaken to reduce impacts.  Particular attention should be paid to the Contractor’s implementation of the recommended mitigation measures.

Should the monitoring results of the water quality parameters at any designated monitoring stations indicate that the water quality criteria are exceeded, the actions in accordance with the Event and Action Plan in Table 5.5 should be carried out.

In addition to monitoring, regular environmental site audit is required to ensure the implementation of good site practice, construction runoff pollution prevention measures, drainage, sewage and water gathering ground control measures detailed in Annex A.


Table 5.5      Event and Action Plan for Water Quality During Construction


Event

Action

Environmental Team (ET)

Independent Environmental Checker (IEC)

Environmental Representative (ER)

Contractor

Action Level being exceeded by one sampling day

1.        Repeat in-situ measurement to confirm findings;

2.        Identify source(s) of impact;

3.        Inform the IEC, PP, EPD, WSD and the Contractor;

4.        Prepare Notification of Exceedance (NOE) to inform the IEC, Contractor, the PP, EPD and WSD within 24 hours of identification of exceedance;

5.        Check monitoring data, all plant, equipment and the Contractor’s working methods;

6.        Discuss mitigation measures with the IEC and the Contractor;

7.        Repeat measurement on next day of identification of exceedance.

1.    Discuss mitigation measures with ET and the Contractor;

2.    Review proposals on mitigation measures submitted by Contractor and advise the ER accordingly;

3.    Assess the effectiveness of the implemented mitigation measures.

 

1.       Discuss with IEC on the proposed mitigation measures;

2.       Make agreement on the mitigation measures to be implemented.

 

1.                   Inform the ER, PP, EPD and WSD and confirm notification of the non-compliance in writing;

2.        Rectify unacceptable practice;

3.        Check all plant and equipment;

4.        Consider changes of working methods;

5.        Discuss with the ET, IEC and the PP and propose mitigation measures to the IEC and ER;

6.        Implement the agreed mitigation measures.

Action Level being exceeded by more than one consecutive sampling days

1.        Repeat in-situ measurement and laboratory testing to confirm findings;

2.        Identify source(s) of impact;

3.        Inform the IEC, PP, EPD, WSD and the Contractor;

4.        Check monitoring data, all plant, equipment, the Contractor’s working methods and construction sequence;

5.        Check the conditions of the temporary drainage system, silt removal/ wastewater treatment facility, portable toilets, site hoarding and chain-link fence;

6.        Discuss mitigation measures with the IEC, PP,and the Contractor;

7.        Ensure mitigation measures are implemented;

8.        Prepare to increase the monitoring frequency to daily;

9.        Repeat measurement on next day of identification of exceedance.

1.    Discuss mitigation measures with the ET and the Contractor;

2.    Review proposals on mitigation measures submitted by Contractor and advise the ER accordingly;

3.    Access the effectiveness of the implemented mitigation measures.

1.       Discuss with IEC on the proposed mitigation measures;

2.       Make agreement on the mitigation measures to be implemented;

3.       Assess the effectiveness of the implemented mitigation measures.

1.        Inform the ER, PP, EPD and WSD and confirm notification of the non-compliance in writing;

2.        Rectify unacceptable practice;

3.        Check all plant and equipment;

4.        Consider changes of working methods and construction sequence;

5.        Check the conditions of the temporary drainage system, silt removal/ wastewater treatment facility, portable toilets, site hoarding and chain-link fence;

6.        Discuss with the ET, IEC and the PP and propose mitigation measures (such as changes of working methods and construction sequence, fixing the leakage point(s) of temporary drainage system, site hoarding and chain-link fence, replacement of new portable toilets, and cleaning of silt removal/ wastewater treatment facility) to the IEC and ER within 3 working days;

7.        Implement the agreed mitigation measures.

Limit Level being exceeded by one sampling day

1.      Repeat in-situ measurement to confirm findings;

2.      Identify source(s) of impact;

3.      Inform the IEC, ET, PP, EPD, WSD and the Contractor;

4.      Prepare Notification of Exceedance (NOE) to inform the Contractor, the IEC, ER, PP, EPD and WSD within 24 hours of identification of exceedance;

5.      Check monitoring data, all plant, equipment and the Contractor’s working methods;

6.      Check the conditions and review the design of the temporary drainage system, silt removal/ wastewater treatment facility, site hoarding and chain-link fence;

7.      Discuss mitigation measures with the IEC, ER, PP and the Contractor;

8.      Ensure mitigation measures are implemented;

9.      Increase the monitoring frequency to daily until no exceedance of Limit Level.

1.      Discuss mitigation measures with the ER, ET and the Contractor;

2.      Request the Contractor to critically review the working methods;

3.      Review proposals on mitigation measures submitted by Contractor and advise the ER accordingly;

4.      Access the effectiveness of the implemented mitigation measures;

5.      Consider and instruct, if necessary, the Contractor to slow down or stop all or part of the construction work until no exceedance of Limit Level.

1.       Discuss with IEC, ET and Contractor on the proposed mitigation measures;

2.       Request Contractor to critically review the working methods;

3.       Make agreement on the mitigation measures to be implemented;

4.       Assess the effectiveness of the implemented mitigation measures.

1.       Inform the IEC, PP, EPD and WSD and confirm notification of the non-compliance in writing;

2.       Rectify unacceptable practice;

3.       Check all plant and equipment;

4.       Consider changes of working methods and slow down of the construction work;

5.       Check the conditions and review the design of the temporary drainage system, silt removal/ wastewater treatment facility, site hoarding and chain-link fence;

6.       Discuss with the ER, ET, IEC and the PP and propose mitigation measures (such as changes of working methods and slow down of the construction work, fixing the leakage point(s) of or replace the temporary drainage system, site hoarding and chain-link fence as necessary, and increase the cleaning frequency of silt removal/ wastewater treatment facility) to the IEC, ER, PP, EPD and WSD within 3 working days;

7.       Implement the agreed mitigation measures.

Limit Level being exceeded by more than one consecutive sampling days

1.      Consider and instruct, if necessary, the Contractor to slow down or stop all or part of the construction work until no exceedance of Limit Level or proved to be not related to the Project;

2.      Repeat in-situ measurement to confirm findings;

3.      Identify source(s) of impact;

4.      Inform the IEC, ER, PP, EPD, WSD and the Contractor;

5.      Prepare Notification of Exceedance (NOE) to inform the Contractor, the IEC, ER, PP, EPD and WSD within 24 hours of identification of exceedance;

6.      Check monitoring data, all plant, equipment and the Contractor’s working methods;

7.      Check the conditions and review the design of the temporary drainage system, silt removal/ wastewater treatment facility, site hoarding and chain-link fence;

8.      Discuss mitigation measures with the IEC, PP and the Contractor;

9.      Ensure mitigation measures are implemented;

10.  Increase the monitoring frequency to daily until no exceedance of Limit Level.

1.      Consider and instruct, if necessary, the Contractor to slow down or stop all or part of the construction work until no exceedance of Limit Level or proved to be not related to the Project;

2.      Discuss mitigation measures with the ER, ET and the Contractor;

3.      Request the Contractor to critically review the working methods;

4.      Review proposals on mitigation measures and approve accordingly;

5.      Access the effectiveness of the implemented mitigation measures.

1.       Discuss with IC(E), ET and Contractor on the proposed mitigation measures;

2.       Request Contractor to critically review the working methods;

3.       Make agreement on the mitigation measures to be implemented;

4.       Assess the effectiveness of the implemented mitigation measures;

5.       Consider and instruct, if necessary, the Contractor to slow down or to stop all or part of the marine work until no exceedance of Limit level.

1.      Inform the IEC, PP, EPD and WSD and confirm notification of the non-compliance in writing;

2.      Rectify unacceptable practice;

3.      Check all plant and equipment;

4.      Check the conditions and review the design of the temporary drainage system, silt removal/ wastewater treatment facility, site hoarding and chain-link fence;

5.      Consider slow down or stop all or part of the construction work until no exceedance of Limit Level or proved to be not related to the Project;

6.      Discuss with the ER, ET, IEC and the PP and propose mitigation measures (such as slow down or stop all or part of the construction work, provision of additional temporary drainage system, site hoarding, chain-link fence and silt removal/ wastewater treatment facility as necessary) to the IEC, PP, EPD and WSD within one working days;

7.      Implement the agreed mitigation measures;

8.      The contractor shall also report the situation and review the mitigation measures implemented on daily basis until the situation is rectified.


5.3                                      Operational Phase

5.3.1                                Monitoring Parameters

Measurements of the following parameters (considered to be relevant and potentially affected due to the operational activities) should be undertaken by the Project Proponent at strategic locations in Sha Lo Tung Stream (Figure 5.1).  This ensures that any deteriorating water quality arising from the operational activities will be readily detected and timely action be taken to rectify the situation. 

Parameters to be measured in situ are:

      pH;

      water temperature (°C);

      turbidity (NTU);

      dissolved oxygen (DO) (% saturation and mg L-1); and

      salinity (0/00).

Parameters to be measured in laboratory are:

      suspended solids (SS) (mg L-1);

      oil and grease (mg L-1);

      ammonia nitrogen (mg L-1);

      total reactive phosphorus (mg L-1);

      5-day biochemical oxygen demand (BOD5) (mg L-1);

      chemical oxygen demand (COD) (mg L-1); and

      E.coli (cfu/100mL).

In association with the water quality parameter measurements, relevant data should be recorded, including the monitoring location, time, weather conditions, sampling water depth (m), water flow rate (m3/day) and any special phenomena (provided with photographs if appropriate) and operational activities.

5.3.2                                Monitoring Equipment

The requirements for the monitoring equipment used for operational monitoring are the same as for the construction monitoring.

5.3.3                                Measurement and Analysis

All laboratory work for laboratory measurements should be carried out in a HOKLAS accredited laboratory.  The determination work should start within 24 hours after the laboratory has collected the water samples.  The results of laboratory measurements should be provided to the client within 1 week of the sampling event.  The analyses should follow the standard methods as described in APHA Standard Methods for the Examination of Water and Wastewater, 19th Edition, unless otherwise specified.

The standard methods for the in-situ and laboratory measurements that should be followed are shown in Table 5.6. 

Table 5.6      Standard Methods for Analysing the Selected Water Quality Parameters

Parameter

Unit

Standard Method specified in TM

Standard Method specified in EPD Marine Report

TM Standards(1) for Group A Inland Waters

Water Quality Objectives

DO

mg L-1

APHA 17ed 4500-O G

-

≥4 (flow rate ≤ 2000 m3/day)

4

pH

-

APHA 17ed 4500-H+B

-

6.5-8.5 (flow rate ≤ 2000 m3/day)

6-9

Temperature

°C

-

-

35 (flow rate ≤ 100 m3/day)

30 (flow rate > 100 and  ≤ 2000 m3/day)

-

Turbidity

NTU

 

-

-

-

SS

mg L-1

APHA 17ed 2540 D

In house method based on APHA 20ed 2540 D

10 (flow rate ≤ 100 m3/day)

5 (flow rate > 100 & ≤ 2000 m3/day)

25

Oil and grease

mg L-1

APHA 17ed 5520 C

-

1 (flow rate ≤ 2000 m3/day)

-

Ammonia nitrogen

mg L-1

APHA 17ed 4500-NH3

In house method based on ASTM D3590-89 B

1 (flow rate ≤ 1000 m3/day)

0.5 (flow rate >1000 and ≤ 2000 m3/day)

0.5

Total reactive phosphorus

mg L-1

APHA 17ed 4500-P

In house method based on ASTM D515-88 A (FIA)

1 (flow rate ≤ 10 m3/day)

0.7 (flow rate >10 and ≤ 500 m3/day)

0.5 (flow rate >500 and ≤ 2000 m3/day)

-

BOD5

mg L-1

BS 6068: Section 2.14:1984

In house method based on APHA 18ed 5210 B

10 (flow rate ≤ 100 m3/day)

5 (flow rate > 100 & ≤ 2000 m3/day)

5

COD

mg L-1

ASTM D 1252-88 Test Method B or APHA 17ed 5220 C & D

In house method GL-OR-38 & GL-OR-39, based on ASTM3 D1252-00 A&B (CODCr)

50 (flow rate ≤ 100 m3/day)

20 (flow rate > 100 & ≤ 2000 m3/day)

30

E. coli

cfu 100mL-1

Membrane lauryl sulphate method with in situ urease test for E. coli

In house method, membrane filtration with CHRO Magar Liquid E. coliColiform culture

< 1 (flow rate ≤ 2000 m3/day)

1,000

Note:    (1)    Cap. 358AK, Technical Memorandum Standards for Effluents Discharged into Drainage and Sewerage Systems, Inland and Coastal Waters

             (2)   Ammonia nitrogen should not exceed 0.5 mg L-1 at any time.  The WQO compliance for SS is based on annual median value and E. coli is based on running median, while WQO compliance for other parameters is based on individual measurements.

The submitted information should include pre-treatment procedures, instrument use, Quality Assurance/Quality Control (QA/QC) details (such as blank, spike recovery, number of duplicate samples per-batch etc), detection limits and accuracy.  The QA/QC details should be in accordance with requirements of HOKLAS or another internationally accredited scheme.  It is recommended that a minimum of 10% of the samples should be collected and analysed in duplicate for QA/QC purposes.  Additional duplicate samples may also be required by EPD and WSD for inter-laboratory calibration.  Remaining samples after analysis should be kept by the laboratory for 3 months in case report analysis is required. 

5.3.4                                Monitoring Locations

Water quality monitoring locations are the same as those for the construction phase, as shown in Figure 5.1 and detailed in Table 5.7 below.  A schedule for water quality monitoring should be prepared by the Project Proponent and approved by the EPD and WSD prior to the commencement of the monitoring.

Table 5.7      Locations of Water Quality Monitoring Stations

Monitoring Station

ID

Type

Easting

Northing

Sha Lo Tung Stream

R1-U

Upstream (Control)

836664

837319

 

R1-UM

Upstream (Reference)

836752

837414

 

R1-M

Midstream (Impact)

836898

837450

 

R1-D

Downstream (Gradient)

837103

837534

Note: An active agricultural land was recorded at the downstream of Control Station (R1-U) and just upstream of the Development Site.  The Reference Station (R1-UM) is used to monitoring any influence of the farming activities on the water quality, but not for the determination of Event and Action Plan.  The Downstream (Gradient) Station (R1-D) is used to monitor the dilution effect of water pollution and the further potential influence to downstream sections of Sha Lo Tung Stream, but not for the determination of Event and Action Plan.

The water depth in the stream may not be sufficient to take samples at different depths and samples will only be taken at mid-depth. 

Three replicates (3 samples) at each station from each independent sampling event are required for all parameters to ensure a robust statistically interpretable data set.

5.3.5                                Monitoring Frequency

Monitoring should be undertaken once per month during the first twelve months of the operation phase.  Two of the monitoring events should be scheduled on the day just after the Ching Ming Festival Day and Chung Yeung Festival Day.  After the twelve-month monitoring, the monitoring results will be reviewed by the Project Proponent to determine whether it is necessary to extend the monitoring programme.  The review results should be submitted to EPD and WSD for agreement.  The proposed water quality monitoring schedule should be faxed to IEC, EPD and WSD before the commencement of the monitoring.  The IEC, EPD and WSD should be notified immediately of any changes in schedule by fax.

5.3.6                                Event and Action Plan

Water quality monitoring results at the Impact Station (R1-D) will be evaluated against the Action and Limit levels shown in Table 5.8.  The Action and Limit Levels should be reviewed after the completion of the baseline monitoring and would be amended, if appropriated.  The proposal for the amendment of the action and limit levels should be submitted to the IEC, EPD and WSD for agreement.

Table 5.8       Determination of Action and Limit Levels

Parameter

Action Level

Limit Level

DO in mg L-1 to monitor sediment loadings or other waste materials

5%-tile of baseline data

< 4 mg/L or 1%-ile of baseline data (1)

SS in mg L-1 to monitor sediment loadings or other waste materials

120% of Upstream Control Station’s SS or 95%-tile of baseline data

Higher than 130% of Upstream Control Station’s SS or 99%-tile of baseline data (1) or >25 mg/L (2)

Turbidity in NTU to monitor sediment loadings or other waste materials

120% of Upstream Control Station’s turbidity or 95%-tile of baseline data

Higher than 130% of Upstream Control Station’s turbidity or 99%-tile of baseline data

pH to monitor the acidity or basicity of stream water in particular water pollution due to release of cement materials

N/A

<6 or >9 (2)

Oil and Grease in mg L-1 to monitor any contamination due to machinery

Higher than 120% of Upstream Control Station’s oil and grease or 95%-tile of baseline data (2)

Higher than 130% of Upstream Control Station’s ammonia nitrogen or 99%-tile of baseline data (2)

or >1 mg/L (3)

Ammonia nitrogen in mg L-1 to monitor nutrient loadings in the stream water

120% of Upstream Control Station’s ammonia nitrogen or 95%-tile of baseline data

Higher than 130% of Upstream Control Station’s ammonia nitrogen or 99%-tile of baseline data (2)

or >0.5 mg/L (3)

Total reactive phosphorus in mg L-1 to monitor any application of fertilizers

120% of Upstream Control Station’s total reactive phosphorus or 95%-tile of baseline data

Higher than 130% of Upstream Control Station’s total reactive phosphorus or 99%-tile of baseline data or >0.5 mg/L (3)

BOD5 in mg L-1 to monitor the level of organic waste in the stream water

120% of Upstream Control Station’s BOD5 or 95%-tile of baseline data

Higher than 130% of Upstream Control Station’s BOD5 or 99%-tile of baseline data or >5 mg/L (2)

COD in mg L-1 to monitor the level of contaminants in the stream water

120% of Upstream Control Station’s COD or 95%-tile of baseline data

Higher than 130% of Upstream Control Station’s COD or 99%-tile of baseline data or >30 mg/L (2)

E. coli to monitor the level of faecal contamination in the stream water or monitor the effectiveness of the sewage control measures

95%-tile of baseline data (4)

99%-tile of baseline data (4) or >1,000 cfu 100mL-1

Notes:

1.      With reference to Table 3.1 of the Guidelines for Development Projects in Hong Kong.

2.     Adopted the principles on Water Quality Objectives and the Guidelines for Development Projects in Hong Kong.

3.     In accordance with Cap. 358AK, Technical Memorandum Standards for Effluents Discharged into Drainage and Sewerage Systems, Inland and Coastal Waters, Table 3 Standards for effluents discharged into Group A inland waters.

4.     The baseline monitoring scheduled to cover different time slot which can represent the background E. coli concentration in the stream taken into account of the influence of human/ animal activities at Sha Lo Tung.

5.      All the figures given in the table are used for reference only and the figures may amend if the baseline data has significant difference compare with Technical Memorandum Standards for Effluents Discharged into Drainage and Sewerage Systems, Inland and Coastal Waters, Table 3 Standards for effluents discharged into Group A inland waters (in particular for the parameters of Oil and Grease and Total reactive phosphorus).  Approval from relevant departments including EPD and WSD should be obtained for any amendment of the limit level.

Any noticeable change to water quality should be recorded in the data record sheets and should be investigated and remedial actions should be undertaken to reduce impacts.  Particular attention should be paid to the Operator’s implementation of the recommended mitigation measures.

Should the monitoring results of the water quality parameters at any designated monitoring stations indicate that the water quality criteria are exceeded, the actions in accordance with the Event and Action Plan in Table 5.9 should be carried out.

In addition to monitoring, regular environmental site audit is required to ensure the implementation of surface runoff, drainage and sewage control measures detailed in Annex A.


Table 5.9      Event and Action Plan for Water Quality During Operation


Event

Action

Environmental Team (ET)

Independent Environmental Checker (IEC)

Environmental Representative (ER)

Operator

Action Level being exceeded by one sampling day

1.       Repeat in-situ measurement to confirm findings;

2.       Identify source(s) of impact;

3.       Inform the IEC, EPD, WSD and the Operator;

4.       Prepare Notification of Exceedance (NOE) to inform the IEC, the Operator, EPD and WSD within 24 hours of identification of exceedance;

5.       Check monitoring data, all plant, equipment and the Operator’s operation procedures/ activities;

6.       Discuss mitigation measures with the IEC and the Operaror;

7.       Repeat measurement on next day of identification of exceedance.

1.    Discuss mitigation measures with ET and the Operator;

2.    Review proposals on mitigation measures submitted by Operator and advise the ER accordingly;

3.    Assess the effectiveness of the implemented mitigation measures.

 

1.       Discuss with IEC on the proposed mitigation measures;

2.       Make agreement on the mitigation measures to be implemented.

 

1.       Inform the ER, EPD and WSD and confirm notification of the non-compliance in writing;

2.       Rectify unacceptable practice;

3.       Check all plant and equipment;

4.       Discuss with the ET and IEC and propose mitigation measures to the IEC and ER;

5.       Implement the agreed mitigation measures.

Action Level being exceeded by more than one consecutive sampling days

1.       Repeat in-situ measurement and laboratory testing to confirm findings;

2.       Identify source(s) of impact;

3.       Inform the IEC, EPD, WSD and the Operator;

4.       Check monitoring data, all plant, equipment, the Operator’s operation procedures/ activities;

5.       Check the conditions of the drainage system, vortex grit separator, runoff storage tank, sewage storage tank, sewerage system and pumping systems;

6.       Discuss mitigation measures with the IEC and the Operator;

7.       Ensure mitigation measures are implemented;

8.       Prepare to increase the monitoring frequency to daily;

9.       Repeat measurement on next day of identification of exceedance.

1.    Discuss mitigation measures with the ET and the Operator;

2.    Review proposals on mitigation measures submitted by Operator and advise the ER accordingly;

3.    Access the effectiveness of the implemented mitigation measures.

1.       Discuss with IEC on the proposed mitigation measures;

2.       Make agreement on the mitigation measures to be implemented;

3.       Assess the effectiveness of the implemented mitigation measures.

1.       Inform the ER, EPD and WSD and confirm notification of the non-compliance in writing;

2.       Rectify unacceptable practice;

3.       Check all plant and equipment;

4.       Consider changes of operation procedures/ activities;

5.       Check the conditions of the drainage system, vortex grit separator, runoff storage tank, sewage storage tank, sewerage system and pumping systems;

6.       Discuss with the ET and IEC and propose mitigation measures (such as changes of operation procedures/ activities) to the IEC and ER within 3 working days;

7.       Implement the agreed mitigation measures.

Limit Level being exceeded by one sampling day

1.       Repeat in-situ measurement to confirm findings;

2.       Identify source(s) of impact;

3.       Inform the IEC, ET, EPD, WSD and the Operator;

4.       Prepare Notification of Exceedance (NOE) to inform the Operator, the IEC, ER, EPD and WSD within 24 hours of identification of exceedance;

5.       Check monitoring data, all plant, equipment and the Operator’s operation procedures/ activities;

6.       Check the conditions of the drainage system, vortex grit separator, runoff storage tank, sewage storage tank, sewerage system and pumping systems;

7.       Check the behaviour and activities of the visitors and on site staffs;

8.       Discuss mitigation measures with the IEC, ER, and the Operator;

9.       Ensure mitigation measures are implemented;

10.    Increase the monitoring frequency to daily until no exceedance of Limit Level.

1.    Discuss mitigation measures with the ER, ET and the Operator;

2.    Request the Operator to critically review the working methods;

3.    Review proposals on mitigation measures submitted by Operator and advise the ER accordingly;

4.    Access the effectiveness of the implemented mitigation measures;

5.    Consider and instruct, if necessary, the Operator to slow down part of the operation activities until no exceedance of Limit Level.

1.       Discuss with IEC, ET and Operator on the proposed mitigation measures;

2.       Request the Operator to critically review the operation procedures/ activities;

3.       Make agreement on the mitigation measures to be implemented;

4.       Assess the effectiveness of the implemented mitigation measures.

1.       Inform the IEC, EPD and WSD and confirm notification of the non-compliance in writing;

2.       Rectify unacceptable practice;

3.       Check all plant and equipment;

4.       Consider changes of operation procedures/ activities and slow down of the operation activities;

5.       Check the conditions of drainage system, vortex grit separator, runoff storage tank, sewage storage tank, sewerage system and pumping systems;

6.       Check the behaviour and activities of the visitors and on site staffs;

7.       Discuss with the ER, ET and IEC and propose mitigation measures (such as changes of operation procedures/ activities and slow down part of the operation activities, cleaning of vortex grit separator, runoff storage tank and sewage storage tank, and replace the broken pump) to the IEC, ER, EPD and WSD within 3 working days;

8.       Implement the agreed mitigation measures.

Limit Level being exceeded by more than one consecutive sampling days

1.       Consider and instruct, if necessary, the Operator to slow down or stop all or part of the operation activities until no exceedance of Limit Level or proved to be not related to operation of the Project;

2.       Repeat in-situ measurement to confirm findings;

3.       Identify source(s) of impact;

4.       Inform the IEC, ER, EPD, WSD and the Operator;

5.       Prepare Notification of Exceedance (NOE) to inform the Operator, the IEC, ER, EPD and WSD within 24 hours of identification of exceedance;

6.       Check monitoring data, all plant, equipment and the Operator’s operation procedures/ activities;

7.       Check the conditions and review the design of the drainage system, vortex grit separator, runoff storage tank, sewage storage tank, sewerage system and pumping systems;

8.       Check the behaviour and activities of the visitors and on site staffs;

9.       Discuss mitigation measures with the IEC and the Operator;

10.   Ensure mitigation measures are implemented;

11.   Increase the monitoring frequency to daily until no exceedance of Limit Level.

1.    Consider and instruct, if necessary, the Operator to slow down or stop all or part of the operation activities until no exceedance of Limit Level or proved to be not related to the Project;

2.    Discuss mitigation measures with the ER, ET and the Operator;

3.    Request the Operator to critically review the operation procedures/ activities;

4.    Review proposals on mitigation measures and approve accordingly;

5.    Access the effectiveness of the implemented mitigation measures.

1.       Discuss with IC(E), ET and Operator on the proposed mitigation measures;

2.       Request Operator to critically review the working methods;

3.       Make agreement on the mitigation measures to be implemented;

4.       Assess the effectiveness of the implemented mitigation measures;

5.       Consider and instruct, if necessary, the Operator to slow down or to stop all or part of the operation procedures/ activities until no exceedance of Limit level.

1.       Inform the IEC, EPD and WSD and confirm notification of the non-compliance in writing;

2.       Rectify unacceptable practice;

3.       Check all plant and equipment;

4.       Check the conditions and review the design of the drainage system, vortex grit separator, runoff storage tank, sewage storage tank, sewerage system and pumping systems;

5.       Check the behaviour and activities of the visitors and on site staffs;

6.       Consider slow down or stop all or part of the operation activities until no exceedance of Limit Level or proved to be not related to operation of the Project;

7.       Discuss with the ER, ET and IEC and propose mitigation measures (such as slow down or stop all or part of the operation activities, fixing the leakage point(s) of the drainage and sewerage systems, restrict the activities and number of visitors) to the IEC, EPD and WSD within one working days;

8.       Implement the agreed mitigation measures;

9.       The Operator shall also report the situation and review the mitigation measures implemented on daily basis until the situation is rectified.

 


6                                            Sewerage and Sewage Treatment IMPLIcations

6.1                                      Introduction

In accordance with the recommendations of the EIA, mitigation measures have been proposed during the construction phase of the Project.  Details of the mitigation measures are presented in Annex A - Implementation Schedule.

6.2                                      Construction Phase

With adoption of Option 1 Sewage Disposal Scheme as described in Section 7.6 of the EIA Report, the following mitigation measures are proposed:

·            Installation of an approximately 2 km long 225 mm diameter twin sewerage rising mains from the Development Site running along Sha Lo Tung Road to the existing sewerage network at Ting Kok Road;

·            Installation of a stand-by pump (with a 100% standby pumping capacity) in case of mal-function of the working pump; and

·           Construction of a storage tank (fitted with a level indicator and a high level alarm system, designed and constructed to comply with the Buildings (Standards of Sanitary Fitments, Plumbing, Drainage Works and Latrines) Regulations (Cap 123I) reg. 47A) of minimum 180m3 capacity, to give approximately three days withholding time over maximum visitor attendance over festival periods to cater for the situation if the pumping facilities malfunctioned.

6.3                                      Operational Phase

The following measures are recommended to manage the increase in sewage generation from the operation of the Project:

·            Provision of adequate permanent water closets and urinals in the complex;

·            Emptying of the sewage storage tank before and immediately after the festivals;

·            Provision of portable toilets at the entrance of Sha Lo Tung road, next to Ting Kok Road for contingency purpose; and

·            Should the permanent sanitary facilities in the Development Site be closed due to malfunction or emergency maintenance, additional portable toilets can be arranged within a short period of time to cater the visitors, ie a total of 10 portable toilets can cater for a maximum of 380 x 10 x 2 = 7,600 visitors if cleaning exercise is performed.

7                                            Waste Managment

7.1                                      Introduction

In accordance with the recommendations of the EIA, mitigation measures have been proposed during the construction and operation phases of the Project.  Details of the mitigation measures are presented in Annex A - Implementation Schedule.

7.2                                      Construction Phase

No monitoring is required but regular environmental site audit is required to ensure good site management programme is implemented in accordance with the approved procedures, trip ticket system and the site Waste Management Plan.  The audits will look at all aspects of waste management including waste generation, storage, recycling, transport and disposal.  Routine daily site inspections will also cover waste management.

7.3                                      Operational Phase

No monitoring is required but regular environmental site audit is required to ensure good site management programme is implemented in accordance with the approved procedures, trip ticket system and the site Waste Management Plan.  The audits will look at all aspects of waste management including waste generation, storage, recycling, transport and disposal. 

 

8                                            ecology

8.1                                      Introduction

Potential ecological impacts associated with the construction and operational phases, of the Project have been identified in the EIA Report.  In accordance with the recommendations of the EIA, mitigation measures have been proposed during the construction and operational phases of the Project.  Details of the mitigation measures are presented in Annex A - Implementation Schedule.

The works for the establishment of the Ecological Reserve and the implementation of the Conservation Management Plan are expected to enhance the conservation value of Sha Lo Tung Valley.  As a consequence, the proposed Project is expected to bring about long term and sustainable benefits to the ecology of Sha Lo Tung Valley and the habitats and associated wildlife.

With the implementation of good construction practice, no adverse ecological impact is anticipated for these small scale works.  Measures relate to visitor control and general maintenance works have been recommended during the operation / maintenance of Ecological Reserve.  Detailed ecological monitoring on regular basis for the purpose of conservation management of the Ecological Reserve will be undertaken in accordance with the recommendation of the Conservation Management Plan.

To avoid ecological risk to the Sha Lo Tung Valley (includes Sha Lo Tung SSSI and stream downstream, which are considered to be of high ecological and conservation significance), any discharge of construction runoff and wastewater from the Development Site Site and Sha Lo Tung Road Improvement into these sites is prohibited.  The most effective way to check on ecological conditions is through monitoring the stream habitat conditions, riparian vegetation, adult odonate and freshwater fish (through direct observation) along Sha Lo Tung Stream.  If the stream habitats are being impacted by construction runoff and wastewater, there will be some signs to be observed and immediate actions can be undertaken to rectify the problem.  Therefore stream, riparian vegetation, adult odonate and freshwater fish monitoring can obtain more useful information to audit the implementation and effectiveness of the proposed mitigation measures than direct fauna sampling and is less intrusive.  The following Section provides details of the ecological monitoring during construction and operation to verify whether the potential exists for any impacts to occur to Sha Lo Tung SSSI and stream.

8.2                                      Construction Phase

8.2.1                                Transplantation and Compensatory Planting

Common Tutcheria Tutcheria championii, Incense Tree Aquilaria sinensis, Lamb of Tartary Cibotium barometz, Hong Kong Pavetta Pavetta hongkongensis, Cycad Fern Brainea insignis, Rhodoleia Rhodoleia championii, Bamboo Orchid Arundina graminifolia and Willow-leaved Camellia Camellia salicifolia were identified as being of conservation interest within the Development Site and along the Sha Lo Tung Road (for details refer to Section 9 Ecology of the EIA Report).  As a mitigation measure, the affected individuals (if confirmed as necessary during detailed engineering design) will be transplanted prior to commencement of construction work to suitable nearby habitats prior to the construction phase as far as practicable. 

A detailed vegetation survey will be conducted within the Development Site and along the Sha Lo Tung Road impacted areas by a suitably qualified botanist/ ecologist to identify and record the affected individuals of any plant species of conservation interest (including, but not limited to, Common Tutcheria, Incense Tree, Lamb of Tartary, Hong Kong Pavetta, Cycad Fern, Rhodoleia and Willow-leaved Camellia) prior to the commencement of site clearance works.  The survey will also serve to identify any other plants of conservation interest which may be present in the Development Site (eg Viburnum hanceanum) which also need transplanting.  Feasibility and suitability of transplanting the affected plant species will be carefully studied and suitable receptor sites will be identified.  A detailed transplantation proposal providing information on transplantation methodology, recipient site, implementation programme, watering requirement, post-transplantation monitoring and personnel involved shall be submitted to and approved by EPD, AFCD and District Lands Office.  Transplantation will be supervised by a suitably qualified botanist/ horticulturist.  After transplantation, monitoring will be undertaken to check the performance and health conditions of the transplanted individuals on a weekly basis for the first month after transplantation and on a monthly basis for an additional eleven months.  Remedial actions will be discussed with EPD, AFCD and District Lands Office in the event of unsuccessful transplantation.   

The EIA Report has recommended provision of approximately 2 ha of on-site compensatory tree and shrub planting for the loss of secondary woodland (approximately 0.03 ha due to the Development Site and approximately 0.2 ha due to the Sha Lo Tung Road Improvement) and plantation (approximately 0.43 ha due to the Sha Lo Tung Road Improvement).  The compensatory planting will be planted on-site, either within the Development Site or the Ecological Reserve.  The concept of the proposed compensatory planting at the Development Site is presented in Figures 9.1-9.3.  The proposed planting areas within the Ecological Reserve is recommended in grassland shrubland mosaic to the north of the Study Area and presented in Figure 9.2.  The location and size of the compensatory planting should be approved by the EPD and AFCD.  The selection of planting species shall be made with reference to the species identified in Annex F2 and be native to Hong Kong or the South China region.  The arrangement of the on-site compensatory planting, ie tree/ shrub mix and exact location, will be subject to the detailed landscape design.  The cut slopes along the improved Sha Lo Tung Road (with approximately 0.47 ha in total) will also be planted with native shrubs and trees or hydroseeded subject to the gradients.  After compensatory tree and shrub planting, twelve months monitoring will be undertaken to check the performance and health condition of the planted tree and shrub individuals on a monthly basis.  Remedial actions will be discussed with AFCD in the event of unsuccessful planting. 

8.2.2                                Stream Monitoring

Stream monitoring should be undertaken by a qualified person along the Sha Lo Tung Stream next to the Development Site (the stream monitoring section) as shown in Figure 5.1 daily for working days during the construction phase.  No more than three weeks prior to the commencement of the construction phase and the impact monitoring, baseline stream monitoring will be undertaken on three occasions (days) within a week.  Within a week after the completion of the construction works, a post-project stream monitoring will be carried out on three occasions (days).

The qualified person (Environmentalist/ Ecologist with at least 3 years relevant experience in field surveys) should walk along the stream bank of the stream monitoring section as far as is possible, to identify the signs of the impact.  Stream photographic records at five fixed locations along the stream should be established during baseline, impact and post-project monitoring.  The stream photographic records should be reviewed and compared; during the construction phase monitoring, this will enable identification of any daily changes of the stream condition.  Should any signs of the impact observed during the stream monitoring be confirmed or suspected to be related to the construction work activities, the construction works should be halted immediately until the pollution source(s) can be identified.  A Preliminary Daily Stream Monitoring Checklist is presented in Annex C.

The major potential water quality impact and signs of abiotic impacts associated with specific construction activities are summarised in Table 8.1. 

Table 8.1      Major Potential Water Quality Impact and the Signs of the Abiotic Impacts

Category of Runoff and Wastewater

Potential Water Quality Impacts

Signs of the Abiotic Impact

Runoff and erosion of exposed bare soil and earth

Increase stream water turbidity and suspended solids

Muddy water, usually yellowish in colour; a thin layer of silt/ sediment covering the stream bed (particularly the rocky bottom); rubbish observed along the stream banks and in the stream

Spillages of liquid stored on-site, such as oil, diesel and solvents

Decrease stream water DO level and pollution of the stream water

Oily water surface, sometimes visible oil on the stream banks; milky water

Wastewater generated from concrete washing

Increase stream water pH value and turbidity

Milky water

Wastewater generated from vehicle washing

Decrease stream water DO level and pollution of the stream water

Oily water surface, sometimes may observe oil on the stream banks; milky water

Spillages of Sewage Effluent

Increase stream water nutrient loadings

Bad smelling and turbid water

The signs of the abiotic impacts and the pollution source(s) are easily identified by an Environmental Specialist/ Ecologist who is experienced in field surveys.  Inspection of the stream conditions is therefore recommended as a sensitive, non-intrusive and effective monitoring method.  Should any signs of the impact be observed during the stream monitoring, the actions listed in the Event and Action Plan in Table 8.2 should be carried out.

Baseline stream hydrology monitoring, including stream water level, stream wet width and flow rate, should be conducted at least 5 days in wet season and 5 days in dry season at Stations R1-U, R1-M and R1-D (Figure 5.1) prior to the commencement of any construction works.  Impact stream hydrology monitoring should be conducted quarterly (5 monitoring days per quarter) during construction phase.  A permanent marker is recommended to install at the four stations (prefer to install at the middle stream pool) so as to monitor the stream water level and wet width more accurate and effectively.  The baseline and impact monitoring days are preferred to be conducted in different weather conditions (ie rainy day, sunny day or after long period of sunny/rainy days).  Should adverse impact (ie reduction in the stream flow) be identified during the stream hydrology monitoring, the actions listed in the Event and Action Plan in Table 8.2 should be carried out. 

8.2.3                                Biological Monitoring

The species composition and relative abundance of riparian vegetation, adult odonate and fish communities along Sha Lo Tung perennial stream, (particularly in the proximity to the development site) and the wet abandoned agricultural land are considered as the key biological indicators of the aquatic habitat conditions.  Any water pollution due to uncontrolled surface runoff from the proposed development would influence the water quality of Sha Lo Tung perennial streams and / or pools within the wet abandoned agricultural land at the northeast of the Development Site, and therefore also the associated floral and faunal communities.

A baseline biological monitoring for the riparian vegetation, adult odonate and fish communities should be conducted once during the wet season (at least 5 days) and once during the dry season (at least 5 days) along the Sha Lo Tung stream and the pools located in the wet abandoned agricultural land (exact location refer to Figure 5.1) prior to the commencement of any construction works.  The monitoring should also be undertaken at the upstream and down stream of the Impact Stream Monitoring Section.  Upstream of the Impact Stream Monitoring Section is considered as the control station and the down stream of the Impact Stream Monitoring Section is considered as the gradient station. 

The species diversity, relative abundance and community structure of the riparian vegetation, adult odonate and fish in the pools located in the wet abandoned agricultural land and along the control, impact and gradient stream sections, should be recorded during the monitoring.  Riparian vegetation, either side of the pools, the control, impact and gradient Stream Sections as well as the aquatic plants beside the pools and along the stream sections, encountered and their relative abundance will be recorded with special attention to the signs of pollution, ie mud, observed on the leave surface.  Adult odonate (with particular focus on stream specialists) will be surveyed using the transect count method along the stream (Figure 5.1).  Any adult odonate within 10 m from either side of the survey transect (stream monitoring section as shown in Figure 5.1) will be identified and counted.  The fish (with particular focus on Hong Kong Paradise Fish, Small Snakehead and Predaceous Chub) will be surveyed by direct observation and active searching if necessary.  The fish encountered and their relative abundance will be recorded along the stream monitoring sections.  The biological monitoring shall be conducted by experienced ecologist(s) of more than 3 years experience on riparian vegetation, adult odonate and fish communities.  More updated methodology, monitoring frequency, action and limit levels, and personnel involved shall be submitted to and approved by EPD and AFCD prior the commencement of the baseline monitoring. 

The impact biological monitoring for the riparian vegetation, adult odonate and fish communities should be conducted biweekly throughout the construction period.  Baseline and impact monitoring data, in particular the species composition, diversity and relative abundance, should be compared, any substantial differences in habitat characteristics (e.g. water quality, riparian and aquatic vegetation), difference between the pool and along the control, gradient and impact stream sections and the seasonality of the fauna should be noted. 

8.2.4                                Event and Action Plan

Ecological monitoring results at the pools located in the wet abandoned agricultural land at the northeast of the Development Site and the Impact Stream Monitoring Section will be evaluated against the Action and Limit levels shown in Table 8.2.  The Action and Limit Levels should be reviewed after the completion of the baseline monitoring and would be amended, if appropriated.  The proposal for the amendment of the action and limit levels should be submitted to the EPD and AFCD for agreement.

Table 8.2      Determination of Action and Limit Levels

Parameter

Action Level

Limit Level

Stream Water Quality

 

 

Runoff and erosion of exposed bare soil and earth

Identify any one sign of the impact as indicated in Table 8.1

Identify more than one sign of the impact in the consecutive sampling day

Spillages of liquid stored on-site, such as oil, diesel and solvents

Identify any one sign of the impact as indicated in Table 8.1

Identify more than one sign of the impact in the consecutive sampling day

Wastewater generated from concrete washing

Identify any one sign of the impact as indicated in Table 8.1

Identify more than one sign of the impact in the consecutive sampling day

Wastewater generated from vehicle washing

Identify any one sign of the impact as indicated in Table 8.1

Identify more than sign one of the impact in the consecutive sampling day

Spillages of Sewage Effluent

Identify any one sign of the impact as indicated in Table 8.1

Identify more than one sign of the impact in the consecutive sampling day

Stream Hydrology

 

 

Reduction in stream water level, stream wet width and flow rate

Continuous decrease in stream water level, stream wet width and flow rate compare with the upstream control data in the 2 consecutive sampling events.  Seasonal variations and the need for comparison with the baselines, as well as the downstream data should also be taken into account as appropriate.

Continuous decrease in stream water level, stream wet width and flow rate compare with the upstream control data in the 4 consecutive sampling events.  Seasonal variations and the need for comparison with the baselines, as well as the downstream data should also be taken into account as appropriate.

Biological (1)

 

 

Riparian Vegetation

Identify any signs of pollution, ie mud, observed on the leave surface, OR

Continuous decrease in species diversity and relative abundance compare with the gradient and control data in the 2 consecutive sampling events.  Seasonal variations and the need for comparison with the baselines should also be taken into account as appropriate.

Identify more than one signs of pollution, ie mud, observed on the leave surface in the consecutive sampling day, OR

Continuous decrease in species diversity and relative abundance compare with the gradient and control data in the 4 consecutive sampling events.  Seasonal variations and the need for comparison with the baselines should also be taken into account as appropriate.

Adult Odonate

Continuous decrease in species diversity and relative abundance compare with the gradient and control data in the 2 consecutive sampling events.  Seasonal variations and the need for comparison with the baselines should also be taken into account as appropriate.

Continuous decrease in species diversity and relative abundance compare with the gradient and control data in the 4 consecutive sampling events.  Seasonal variations and the need for comparison with the baselines should also be taken into account as appropriate.

Fish

Continuous decrease in species diversity and relative abundance compare with the gradient and control data in the 2 consecutive sampling events.  Seasonal variations and the need for comparison with the baselines should also be taken into account as appropriate.

Continuous decrease in species diversity and relative abundance compare with the gradient and control data in the 4 consecutive sampling events.  Seasonal variations and the need for comparison with the baselines should also be taken into account as appropriate.

Note:   (1)    impact biological monitoring for the riparian vegetation, adult odonate and fish communities will be conducted biweekly through out the construction period.

Any noticeable change to stream water quality and biological parameters should be recorded in the data record sheets and should be investigated and remedial actions should be undertaken to reduce impacts.  Particular attention should be paid to the Contractor’s implementation of the recommended mitigation measures.

Should the monitoring results of the stream water quality, stream hydrology and biological parameters at the Impact Stream Monitoring Section and/ or pools located in the wet abandoned agricultural land at the northeast of the Development Site indicate that the stream water quality, stream hydrology and biological criteria are exceeded, the actions in accordance with the Event and Action Plan in Table 8.3 should be carried out.

 


Table 8.3      Event and Action Plan for Ecology


Event

Action

Environmental Team (ET)

Independent Environmental checker (IEC)

Contractor

Action Level being exceeded

1.       Repeat stream monitoring to confirm findings;

2.       Identify source(s) of impact;

3.       Halt the construction works immediately if confirmed or suspected to be related to the construction work activities;

4.       Inform AFCD, the IEC, EPD and the Contractor;

5.       Prepare Notification of Exceedance (NOE) to inform AFCD, the IEC, Contractor, and EPD within 24 hours of identification of signs of the impact;

6.       Check monitoring data, all plant, equipment and the Contractor’s working methods;

7.       Discuss mitigation measures with the IEC, AFCD, EPD and the Contractor;

8.       Ensure mitigation measures are implemented;

9.       Ensure construction works are not resumed until unacceptable practices are rectified.

1.    Discuss mitigation measures with the ET and the Contractor;

2.    Request the Contractor to critically review the working methods;

3.    Review proposals on mitigation measures and approve accordingly;

4.    Assess the effectiveness of the implemented mitigation measures;

5.    Consider and instruct, if necessary, the Contractor to slow down or stop all or part of the construction work until unacceptable practices are rectified.

1.        Inform AFCD, the IEC and EPD and confirm notification of the non-compliance in writing;

2.        Rectify unacceptable practice;

3.        Check all plant and equipment;

4.        Consider changes of working methods;

5.        Discuss with AFCD, the ET, IEC and EPD and propose mitigation measures to the IEC, EPD and AFCD immediately;

6.        Implement the agreed mitigation measures.

Limit Level being exceeded

1.        Halt the construction works immediately until the event is confirmed not related to the construction activities;

2.        Repeat in-situ measurement to confirm findings;

3.        Identify source(s) of impact;

4.        Inform AFCD, the IEC, EPD, WSD and the Contractor;

5.        Prepare Notification of Exceedance (NOE) to inform the Contractor, the IEC, AFCD, EPD and WSD within 24 hours of identification of exceedance;

6.        Check monitoring data, all plant, equipment and the Contractor’s working methods;

7.        Discuss mitigation measures with the IEC, AFCD, EPD and the Contractor;

8.        Ensure mitigation measures are implemented;

9.        Increase the monitoring frequency to daily until no exceedance of Limit Level.

1.        Discuss mitigation measures with the ET and the Contractor;

2.        Request the Contractor to critically review the working methods;

3.        Review proposals on mitigation measures and approve accordingly;

4.        Access the effectiveness of the implemented mitigation measures;

5.       Consider and instruct, if necessary, the Contractor to slow down or stop all or part of the construction work until no exceedance of Limit Level.

1.        Halt the construction works immediately until the event is confirmed not related to the construction activities;

2.        Inform AFCD, the IEC, EPD and WSD and confirm notification of the non-compliance in writing;

3.        Rectify unacceptable practice;

4.        Check all plant and equipment;

5.        Consider changes of working methods;

6.        Discuss with AFCD, the ET, IEC and EPD and propose mitigation measures to the IEC, AFCD, EPD and WSD within 3 working days;

7.        Implement the agreed mitigation measures.

 


8.3                                      Operational Phase

Operational monitoring, following the methodology of the baseline stream hydrology and biological monitoring, should be conducted quarterly within the first three years after the completion of construction works (a total twelve occasions).  Remedial actions will be discussed with the EPD and AFCD in the event of a change in stream hydrology (ie less stream flow) or decline in species diversity and relative abundance of adult dragonflies and fishes.  Seasonal changes should be taken into account in identifying the change in stream hydrology (ie reduction in stream flow) or decline in species diversity and relative abundance of adult dragonflies and fishes).


9                                            Landscape and Visual Impact

9.1                                      Introduction

The EIA Report has recommended that EM&A for landscape and visual resources is undertaken during both construction and initial operational phases (post –construction) of the project.  The implementation and maintenance of landscape mitigation measures (Annex A) should be checked to ensure that they are fully realised and that potential conflicts between the proposed landscape measures and any other project works and operational requirements are resolved at the earliest practical date and without compromise to the intention of the mitigation measures.

9.2                                      Design Phase

The following measures are recommended to mitigate the landscape and visual impacts:

·           DM1- Design of Structures.  The structures shown in the photomontages are to illustrate the mass of the structures only.  During the design phase of the development, architectural features such as the eaves, cladding materials and finishes etc. will be detailed.  All of these elements will greatly improve the appearance of the structures.  Built structures will utilise appropriate designs to complement the surrounding landscape, including a stepped form that respects the site contours;

·           DM2- Colours.  Colours for the structures can be used to complement the surrounding area.  Lighter colours such as shades of light grey, off-white and light brown may be utilised to reduce the visibility of the structures; and

·           DM3-Green Roofs.  Green roofs and vertical greening shall be designed and constructed to integrate the new buildings into the surrounding environment.

9.3                                      Construction and Initial Operational Phases

A specialist Landscape Sub-Contractor should be employed by the Contractor for the construction of landscape works and subsequent maintenance operations during a 24-month establishment period.  A Registered Landscape Architect should be employed as a member of the ET to supervise the specialist Landscape Sub-contractor for the implementation of landscape works, both hard and soft, involved.

Measures undertaken by both the Contractor(s) and the specialist Landscape Sub-Contractor during the construction phase and first year post-construction will be audited by the Registered Landscape Architect of the ET, to ensure compliance with the intended aims of the measures.  Site inspections should be undertaken at least once every two weeks throughout the landscaping plants establishment period when planting works are being undertaken. 

A tree survey update should be prepared, for DLO submission, and for the purpose of existing trees protection.  Removal of existing trees should be minimised. 

Post-construction phase auditing will be restricted to the 24-month establishment works of the landscaping proposals and thus only the items in the list below related to this period are relevant to the post-construction (initial operational phase) audit; the remainder is for the construction phase site inspections.  The broad scope of the audit/inspections is detailed below but should also be undertaken with reference to the more specific checklist provided in Table 9.1.

·           the extent of the agreed works areas should be regularly checked during the construction phase.  Any trespass by the Contractor(s) outside the limit of the works, including any damage to existing trees will be noted;

·           the progress of the engineering works should be regularly reviewed on site to identify the earliest practical opportunities for the landscape works to be undertaken;

·           existing trees and vegetation within the study area which are not directly affected by the works are retained and protected to the extent safely practical;

·           the methods of protecting existing vegetation proposed by the Contractor(s) are acceptable and enforced;

·           preparation, lifting transport and re-planting operations for any transplanted trees;

·           landscaping works are carried out in accordance with the specifications;

·           the planting of new trees, shrubs, groundcover, climbers, ferns, grasses and other plants, together with the replanting of any transplanted trees are carried out properly and within the right season; and

·           necessary horticultural operations and replacement planting are undertaken throughout the Establishment Period to ensure the healthy establishment and growth of both transplanted trees and newly established plants.


Table 9.1        Construction/Post-Construction Phase Audit Checklist

 

Measures

CM1

Car Park Tree Planting.  Advanced trees are to be planted to provide shade to the car park areas and to reduce the mass of the paved areas.

CM2

Retention of Existing Trees.  Existing trees without conflict with the building structures will be retained to reduce impacts on the site.

CM3

Compensatory Planting.  Where vegetation must be removed, the felled trees within the Development Site and along Sha Lo Tung Road will be compensated with new planting tree numbers at a ratio of 3:1.

CM4

Columbarium Courtyard Plantings.  The internal courtyards and areas surrounding the new development will be landscaped to integrate the buildings into the landscape.

CM5

Open Grassland and Lawn Areas.  Areas of open grassland/lawns will be created to provide areas for passive recreation and to complement the surrounding grassland areas.

CM6

Buffer Planting.  Trees and shrubs will be planted around much of the site boundaries to screen the development and help integrate the development into the surrounding landscape.

CM7

Stream Creation.  Streams containing pools and riffles will be created to create a natural and harmonious landscape within the development.  It must be noted that these features will not be connected in any way to the natural stream bordering the site.

CM8

Early Planting Works.  New plantings are to be installed in available and formed lands during the construction works to reduce landscape impacts.

CM9

Transplantation of Plants.  In addition, plant materials that are in conflict with the development, that are in suitably good condition and of ecological value will also be transplanted.

CM10

Soil Stabilisation and Embankment Planting. During the design process a soil stabilisation and embankment planting strategy should ensure that land affected by slope excavation can be replanted.  Soil preparation and the selection and provision of suitable growing medium is to be completed in accordance with the relevant best practice guidelines

CM11

Cut Stabilisation Areas of cut to be stabilized for operational requirements.  Materials and finishes of stabilization to be selected to complement the surrounding landscape.  All landscape stabilisation measures must conform to GEO 1/2000 – Technical Guidelines on Landscape Treatment and Bio-engineering of Man-made Slopes and Retaining Walls.

CM12

Colour of Site Hoardings.  In order to mitigate the visual impact of these temporary hoardings, it is recommended that the hoardings be erected at a uniform height, with a uniform colour that complements the existing landscape.

The landscape mitigation measures are shown in Figures 9.1-9.4.  Additional good site practices are also recommended to mitigate the impacts:

·            Cultivation of areas impacted during construction - Areas impacted during the construction phase that are not required during the operation phase, are to be cultivated to a depth of 300mm in accordance with accepted Hong Kong practice and guidelines. The cultivation shall involve ripping of compacted soil by mechanical means.  Great care must be taken to avoid any run-off into the existing streams. Therefore this mitigation measure is not to be adopted in areas sloping towards any existing watercourses. 

·            Quality control of imported materials - Appropriate quality control measures are to be used to ensure that all imported materials including but not limited to soils, mulches, plants etc. are to be free of pests and contaminants that may adversely affect the surrounding environment.  All landscape construction works are to be supervised by suitably trained professionals.

In the event of non-compliance with the recommendations of the EIA Report, the EM&A Manual and the Landscape Plan, the responsibilities of the relevant parties is detailed in the Event /Action plan provided in Table 9.2.

Table 9.2      Event and Action Plan for Landscape and Visual Monitoring during Construction Phase


Event

Action

Environmental Team (ET)

Independent Environmental checker (IEC)

Contractor

Non-compliance   on one occasion

1.      Identify Source

2.      Inform the Contractor(s), IEC and EPD

3.      Discuss remedial actions with the IEC, EPD and the Contractor(s)

4.      Monitor remedial actions until rectification has been completed

 

1.      Check report

2.      Check the Contractor(s)'s working method

3.      Discuss with the ET and the  Contractor(s) on practical remedial measures

4.      Advise ER on effectiveness of proposed remedial measures.

5.      Check implementation of remedial measures.

1.       Amend working methods

2.       Rectify damage and undertake any necessary replacement

Repeated Non-compliance

1.      Identify Source

2.      Inform the Contractor(s), IEC and ER

3.      Increase monitoring frequency

4.      Discuss remedial actions with the IEC, ER and the Contractor(s)

5.      Monitor remedial actions until rectification has been completed

6.      If non-compliance stops, cease additional monitoring

1.    Check monitoring report

2.    Check the Contractor(s)'s working method

3.    Discuss with the ET and the Contractor(s) on practical remedial measures

4.    Advise ER on effectiveness of proposed remedial measures

5.    Supervise implementation of remedial measures.

1.    Amend working methods

2.    Rectify damage and undertake any necessary replacement

 

10                                        cultural Heritage

10.1                                  Introduction

In accordance with the recommendations of the EIA, mitigation measures have been proposed during the construction phase of the Project.  Details of the mitigation measures are presented in Annex A - Implementation Schedule.

10.2                                  Construction Phase

During the construction stage of the southern section of the Sha Lo Tung Road Improvement, an archaeological monitoring covering the area as shown in Figure 10.1 is recommended to preserve potentially impacted archaeological resources by record.  The monitoring should be conducted by a professional archaeologist, who should obtain a Licence to Excavate and Search for Antiquities under the Antiquities and Monuments Ordinance and be engaged by the project proponent or environmental team.  The need and scope of archaeological monitoring is subject to the detailed design of construction works.

If laying of drainage pipes is required adjacent to an earth shrine located at the southern section of Sha Lo Tung Road (LF01) and sheet piling works cannot be avoided, a construction vibration monitoring is recommended to be conducted by the construction contractor during the construction work adjacent to LF01.  The monitoring should include:

·           A pre-condition survey for LF01 conducted by a structural engineer to record the state of the feature (including all cracks) before construction work commences;

·           Trial test of vibration generated from ground borne vibration related works;

·           Evaluation and review of the construction method to avoid and minimise the potential impact; and

·           Recommendation for vibration monitoring and protection measures.  This would include the establishment of a vibration limit, monitoring frequency and protective measures to be agreed with the Engineer and AMO. 

In addition, during the construction stage of the Sha Lo Tung Road Improvement adjacent to LF01, the construction contractor should ensure visitors’ safe access to the shrine.  A temporary fence with access entrance should be erected to prevent any direct impact to LF01 during the construction work.

10.3                            &