Civil Engineering and Development Department

Land Works Division

2/F, Civil Engineering and Development Building

101 Princess Margaret Road

Homantin, Kowloon

 

 

 

 

Demolition of Kwai Chung Incineration Plant

Environmental Permit No.

EP-121/2002

 

Monthly EM&A Report for Mar 2009 Rev A

 

Report No.: 203204/KCIP/EM&A/16/A

April 09

 

 

 

 

 

 

 

 

Mott MacDonald Hong Kong Limited

7/F, West Wing Office Building

New World Centre

20 Salisbury Road

Tsim Sha Tsui, Kowloon

Hong Kong

 

Tel:    2828 5757

Fax:   2827 1823

 

This document has been prepared for the titled project or named part thereof and should not be relied upon or used for any other project without an independent check being carried out as to its suitability and prior written authority of Mott MacDonald being obtained.  Mott MacDonald accepts no responsibility or liability for the consequence of this document being used for a purpose other than the purposes for which it was commissioned.  Any person using or relying on the document for such other purpose agrees, and will by such use or reliance be taken to confirm his agreement to indemnify Mott MacDonald Hong Kong for all loss or damage resulting therefrom.  Mott MacDonald accepts no responsibility or liability for this document to any party other than the person by whom it was commissioned.

 

To the extent that this report is based on information supplied by other parties, Mott MacDonald accepts no liability for any loss or damage suffered by the client, whether contractual or tortious, stemming from any conclusions based on data supplied by parties other than Mott MacDonald and used by Mott MacDonald in preparing this report.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pursuant to Condition 2.3 and 3.5 of the Environmental Permit

EP-121/2002

This Monthly EM&A Report (Mar 2009) has been reviewed, certified and verified by the following EM&A members as Conforming to the Information and Recommendations contained in the EIA Report

 

 

 

 

Certified by:                                                                                             

                                           Joseph Chan

                                           Environmental Team (ET) Leader

                                           Mott MacDonald Hong Kong Ltd.

 

 

Date                                   14 April 2009

 

 

 

 

 

Verified by:                                                                                              

                                           Antony Wong

                               Independent Environmental Checker (IEC)

                               Hyder Consulting Limited

 

 

Date                                   14 April 2009

 

                                          


List of Contents                                                                                          Page

EXECUTIVE SUMMARY                                                                                                           iii

1.           INTRODUCTION                                                                                                      1-1

1.1          Background to the Project............................................................................... 1-1

1.2          Coverage of this EM&A Report...................................................................... 1-1

1.3          Project Management Organisation................................................................... 1-1

1.4          Project Program............................................................................................. 1-1

1.5          Works Undertaken in the Reporting Month....................................................... 1-2

2.           EM&A Requirements                                                                                         2-1

2.1          Summary of EM&A Requirements.................................................................. 2-1

2.2          Environmental Quality Performance Limits....................................................... 2-1

2.3          Event and Action Plans................................................................................... 2-1

2.4          Implementation of Environmental Mitigation Measures...................................... 2-1

3.           Monitoring Results                                                                                        3-1

3.1          Impact Monitoring Schedule............................................................................ 3-1

3.2          Monitoring Methodology.................................................................................. 3-1

3.3          Monitoring Equipment..................................................................................... 3-3

3.4          Equipment Calibration..................................................................................... 3-3

3.5          Results of Impact Monitoring........................................................................... 3-3

4.           Project Environmental Status                                                                4-1

4.1          Environmental Meetings.................................................................................. 4-1

4.2          Status of Environmental Submissions, Permits and Licenses.............................. 4-1

4.3          Waste Management Status.............................................................................. 4-2

4.4          Review of Environmental Monitoring Procedures.............................................. 4-3

4.5          Implementation Status of Environmental Mitigation Measures............................ 4-3

5.           AUDIT FINDINGS                                                                                                      5-1

5.1          Site Environmental Audit................................................................................. 5-1

5.2          Site Effluent Discharge/WPCO Effluent Discharge.......................................... 5-2

6.           Environmental COMPLAINTS AND NON-COMPLIANCE                             6-1

6.1          Summary of Environmental Complaints, Notifications of Summons and Successful Prosecutions   6-1

6.2          Environmental Enquires................................................................................... 6-1

6.3          Environmental Events..................................................................................... 6-1

6.4          Environmental Exceedance/ Non-compliance................................................... 6-1

7.           future key issues                                                                                             7-1

7.1          Key Issues and Recommendations for Coming Month....................................... 7-1

8.           conclusion and recommendation                                                            8-1

8.1          Conclusions.................................................................................................... 8-1

8.2          Recommendations.......................................................................................... 8-1

 

List of Appendices

Appendix A.......... Environmental Quality Performance Limits

Appendix B.......... Event and Action Plans

Appendix C.......... Schedule of Mitigation Measures from the EIA/ EM&A Manual and Event Contingency Plan for Environmental Compliant

Appendix D.......... EM&A Schedule

Appendix E.......... Air Quality Monitoring Results and Graphical Presentation

Appendix F ......... Calibration Certificates

Appendix G ......... Works Programme

Appendix H ......... Weather Information from HKO

 

List of Tables

Table 2‑1............. Summary of Impact EM&A Requirements....................................................... 2-1

Table 3‑1............. TSP Monitoring Equipment.............................................................................. 3-3

Table 3‑2............. Equipment Calibration Frequencies.................................................................. 3-3

Table 3‑3............. Results of 1-Hour TSP Impact Monitoring........................................................ 3-3

Table 3‑4............. Results of 24-Hour TSP Impact Monitoring...................................................... 3-4

Table 4‑1............. Status of Environmental Submissions, Permits and Licenses.............................. 4-1

Table 4‑2............. Monthly Summary Waste Flow Table for 2009................................................. 4-2

Table 5‑1............. Summary of Environmental Site Inspections..................................................... 5-1

Table 6‑1............. Summary of Environmental Complaints and Prosecutions.................................. 6-1

Table 6‑2............. Summary of Exceedances............................................................................... 6-1

Table B‑1............. Event and Action Plan for Air Quality.............................................................. B1

Table C‑2............. Implementation Schedule of Recommended Mitigation Measures From the EIA.. C1

Table C‑3............. Event Contingency Plan for Environmental Complaints...................................... C5

 

List of Figures

Figure 1.1              Layout Plan of Work Site and the Environs

Figure 1.2              Project Organisation Chart

Figure 2.1              Location of Air Quality (Dust) Monitoring Station

EXECUTIVE SUMMARY

The EM&A programme for this Project commenced on 1 Dec 2007. This report presents a summary of the environmental monitoring and audit works, list of activities, and mitigation measures implemented during the reporting month of March 2009.

This is the 16th Monthly EM&A Report for the works carried out during the reporting month.

The following construction activities have taken place during the reporting month: -

·       Demolition of roof precast unit from Incineration Plant;

·       Demolition of roof steel frames from Incineration Plant;

·       Erection of scaffolding inside the chimney.

Impact monitoring for air quality (dust) due to the demolition work continued during the reporting month. No exceedance of the Action and Limit Levels for dust was recorded.

No environmental complaint, notification of summons and prosecution was received or made against the Project in the reporting month.

Site inspection was carried out on a weekly basis to monitor proper implementation of environmental pollution control and mitigation measures for the Project. In this reporting month, site inspections were carried out on 4, 12, 19 and 24 March 2009.

No non-compliances with regard to site environmental audits were recorded in this reporting month.

As per the EM&A Manual, baseline 1-hour and 24-hour Total Suspended Particulates (TSP) monitoring was conducted during the period of 31 October 2007 to 13 November 2007. Results were reported in the Baseline Monitoring Report submitted in November 2007.

Future key issues to be considered in the forthcoming month include: -

·       Demolition of brick wall and external wall from Incineration Plant;

·       Demolition of precast beams from Incineration Plant; and

·       Disposal of solidified dioxin/furan contaminated materials (“DCM”).

 

 

1.                      INTRODUCTION

1.1                   Background to the Project

1.1.1              This Project – “Demolition of Kwai Chung Incineration Plant” is a Designated Project defined under the EIA Ordinance. An Environmental Permit (“EP”) was issued on 1 March 2002 [Permit No. EP-121/2002].

1.1.2              This Contract [No.: CV/2007/06] for the Project was awarded to the Contractor – China International Water & Electric Corporation and contractually commenced on 31 October 2007. The main Contract will last for 45 months excluding 12 months for landscape establishment works.  In accordance with Condition 1.11 of the Environmental Permit EP-121/2002, the Director of Environmental Protection (DEP) was notified that the commencement date for the Project was on 24 Jan 2008.

1.1.3              The scope of the Project includes demolition and clearance of the existing chimney, buildings and ancillary structures above the existing concrete ground slab where the former Kwai Chung Incineration Plant (“KCIP”) is located. It also includes the removal of asbestos containing materials (“ACM”) and dioxin/ furan contaminated materials (“DCM”) prior to demolition of structures and subsequent site remediation.

1.1.4              A layout plan of the Project site and the environs are presented in Figure 1.1.

1.1.5              Mott MacDonald Hong Kong Limited (MMHK) has been commissioned by the Project Proponent – Civil Engineering and Development Department (“CEDD”) as the Environmental Team (“ET”) to undertake the Environmental Monitoring and Audit (EM&A) programme described in the approved EM&A Manual of the Project.

1.2                   Coverage of this EM&A Report

1.2.1              The EM&A programme for this Project commenced on 1 Dec 2007. This report presents a summary of the environmental monitoring and audit works, list of activities, and mitigation measures implemented during the reporting month in March 2009.

1.2.2              This is the 16th Monthly EM&A Report for the works carried out during the reporting month.

1.3                   Project Management Organisation

1.3.1              The project organisation chart is presented in Figure 1.2.

1.4                   Project Program

1.4.1              This Contract of the Project commenced on 31 October 2007.  The main Contract will last for 45 months.  

1.5                   Works Undertaken in the Reporting Month

1.5.1              The following construction activities have taken place during the reporting month: -

·                     Demolition of roof precast unit from Incineration Plant;

·                     Demolition of roof steel frames from Incineration Plant; and

·                     Erection of scaffolding inside the chimney.

 

 

Figure 1.1         Layout Plan of Work Site and the Environs

Figure 1.2         Project Organisation Chart

 

 

 

 

2.                      EM&A Requirements

2.1                   Summary of EM&A Requirements

2.1.1              The EM&A programme requires environmental monitoring of air quality and waste management as specified in the approved EM&A Manual dated Sep 2001.

2.1.2              1-hour TSP and 24-hour TSP levels at 1 dust monitoring station are to be taken during the course of dusty work in every reporting month. This air quality monitoring stations for 24-hour TSP and 1-hour TSP measurements is shown in Figure 2.1          Location of Air Quality (Dust) Monitoring Station.

2.1.3              A summary of impact EM&A requirements is presented in Table 2‑1 below.

Table 2‑1          Summary of Impact EM&A Requirements

Parameters

Descriptions

Locations

Frequencies

Duration

Air Quality

24-Hour TSP

1 Location - A1

Once every 6 days

During dust generating construction works

1-Hour TSP

1 Location - A1

3 times every 6 days

During dust generating construction works

Waste

On-Site Waste Audit

Active Work Sites

Weekly

During Construction

On-Site Waste Inspection

Wastewater

On-Site

Wastewater Audit

Active Work Sites

Weekly

During Construction

General Site Conditions

Environmental Site Inspection

Works areas and areas affected by works

Weekly

During Construction

N.B.

A1 – Boundary of the site adjacent to the Kwai Chung Primary Treatment Plant

2.2                   Environmental Quality Performance Limits

2.2.1              Environmental Quality Performance Limits for air quality are shown in Appendix A.

2.3                   Event and Action Plans 

2.3.1              The Event and Action Plans for air quality are shown in Appendix B.

2.4                   Implementation of Environmental Mitigation Measures

2.4.1              The Contractor is required to implement mitigation measures listed in the latest EP, EIA Report and EM&A Manual. During routine site inspections, the Contractor's implementation of mitigation measures, if any, are to be inspected and reviewed. A schedule of the implementation of mitigation measures identified at the EIA stage is given in Appendix C.

Figure 2.1           Location of Air Quality (Dust) Monitoring Station

 

 

 

 

 

3.                      Monitoring Results

3.1                   Impact Monitoring Schedule

3.1.1              Regular site inspections were carried out on 4, 12, 19 and 24 Mar 2009 in the reporting month to assess the compliance with environmental requirements. The EM&A schedule is given in Appendix D.

3.1.2              Impact monitoring for air quality (dust) due to the demolition work continued during the reporting month.

3.2                   Monitoring Methodology

24-hour TSP Monitoring

Installation

3.2.1              The HVS has been installed close to representative air sensitive receivers.  The following criteria have been considered in the installation of the HVS.

·          A horizontal platform with appropriate support to secure the sampler against gusty wind was provided.

·          The distance between the HVS and any obstacles, such as buildings, was at least twice the height that the obstacle protrudes above the HVS.

·          A minimum of 2m separation from walls, parapets and penthouse was required for rooftop sampler.

·          No furnace or incinerator flues were nearby.

·          Airflow around the sampler was unrestricted.

·          Permission was obtained to set up the samplers and to obtain access to the monitoring stations.

·          A secured supply of electricity is needed to operate the samplers.

Preparation of Filter Papers

·         Glass fibre filters, G810 are to be labelled with sufficient filters that are clean and without pinholes.

·         All filters are to be equilibrated in the conditioning environment for 24 hours before weighing. The conditioning environment temperature is to be around 25 °C and not variable by more than ±3°C, the relative humidity (RH) is to be < 50% and not variable by more than ±5 %.  A convenient working RH is 40%.

Field Monitoring

·         The power supply is to be secured to ensure the HVS works properly.

·         The filter holder and the area surrounding the filter are to be cleaned.

·         The filter holder is to be removed by loosening the 4 bolts and a new filter, with stamped number upward, on a supporting screen to be aligned carefully.

·         The filter is to be properly aligned on the screen so that the gasket forms an airtight seal on the outer edges of the filter.

·         The swing bolts are to be fastened to hold the filter holder down to the frame.  The pressure applied is to sufficient to avoid air leakage at the edges.

·         The shelter lid is then closed and is secured with the aluminium strip.

·         The HVS shall be warmed-up for about 5 minutes to establish run-temperature conditions.

·         A new flow rate record sheet is to be set into the flow recorder.

·         The flow rate of the HVS is to be checked and adjusted at around 1.1 m3/min.  The range specified in the updated EM&A Manual is between 0.6-1.7 m3/min.

·         The programmable timer is set for a sampling period of 24 hrs + 1 hr, and the starting time, weather condition and the filter number are to be recorded.

·         The initial elapsed time is to be recorded.

·         At the end of sampling, the sampled filter is to be removed carefully and folded in half length so that only surfaces with collected particulate matter are in contact.

·         It was then placed in a clean plastic envelope and sealed.

·         All monitoring information is to be recorded on a standard data sheet.

·         Filters are to be sent to a HOKLAS accredited laboratory for analysis.

Maintenance and Calibration

·         The HVS and its accessories are to be maintained in good working condition, such as replacing motor brushes routinely and checking electrical wiring to ensure a continuous power supply.

·         HVSs are to be calibrated at a bi-monthly intervals using GMW-25 Calibration Kit throughout all stages of the air quality monitoring.

1-hour TSP Monitoring

Field Monitoring

3.2.2              The measuring procedures of the 1-hour dust meter are to be in accordance with the Manufacturer’s Instruction Manual as follows:

·         Set POWER to “ON”, push BATTERY button, make sure that the meter’s indicator is in the range with a red line and allow the instrument to stand for about 3 minutes (Then, the air sampling inlet has been capped).

·         Push the knob at MEASURE position.

·         Push “O-ADJ” button. (Then meter’s indication is 0).

·         Push the knob at SENSI ADJ position and set the meter’s indication to S value described on the Test Report using the trimmer for SENSI ADJ.

·         Pull out the knob and return it to MEASURE position.

·         Push “START” button.

Maintenance and Calibration

·         The 1-hour TSP meter would be checked at 3-month intervals and calibrated at 1-year intervals throughout all stages of the air quality baseline monitoring.

3.2.3              As per the approved EM&A Manual, dust monitoring stations are located as shown in Figure 2.1 Location of Air Quality (Dust) Monitoring Station.

3.3                   Monitoring Equipment

3.3.1              The equipment used for air quality (dust) monitoring is listed in Table 3‑1.

Table 3‑1          TSP Monitoring Equipment

Equipment

Model

HVS Sampler

Greasby GMWS 2310 Accu-vol system

Calibrator

Tisch TE-5025A

1-hour TSP Dust Meter

TSI Model 8520 Dust Trak Aerosol Monitor

 

3.4                   Equipment Calibration

3.4.1              The calibration frequencies of the monitoring equipment are provided in Table 3‑2.

Table 3‑2          Equipment Calibration Frequencies

Equipment

Calibration Frequency

Latest Calibration Date

High Volume Sampler

Greasby GMWS 2310 Accu-vol system

Every two months

6 March 2009

1-hour TSP Dust Meter

TSI Model 8520 Dust Trak Aerosol Monitor

Every six months

13 January 2009

3.4.2              The calibration certificates are included in Appendix F.

3.5                   Results of Impact Monitoring

Air Quality (1-hr TSP)

3.5.1              Results of 1-hour TSP level are summarised in Table 3‑3.  Detailed results, including weather conditions, and graphical presentations are included in Appendix E.

Table 3‑3          Results of 1-Hour TSP Impact Monitoring

Monitoring Station

1-hour TSP Range (µg/m3)

Action Level (µg/m3)

Limit Level (µg/m3)

A1

129-213

345

500

3.5.2              No exceedance of Action / Limit Levels for 1-hr TSP was recorded in the reporting month.

Air Quality (24-hr TSP)

3.5.3              Results of 24-hour TSP level are summarised in Table 3‑4.  Detailed results, including weather conditions, and graphical presentations are included in Appendix E.

Table 3‑4          Results of 24-Hour TSP Impact Monitoring

Monitoring Station

24-hour TSP Range (µg/m3)

Action Level (µg/m3)

Limit Level (µg/m3)

A1

28-90

179

260

3.5.4              No exceedance of Action / Limit Levels for 24-hr TSP was recorded in the reporting month.

3.5.5              Weather information obtained from the Hong Kong Observatory in the reporting month is included in Appendix H.

 

 

 

4.                      Project Environmental Status

4.1                   Environmental Meetings

4.1.1              One environmental meeting was held on the day of the monthly site inspection on 19 Mar 2009.

4.2                   Status of Environmental Submissions, Permits and Licenses

4.2.1              A summary of status of all environmental submissions, permits, licenses, and/or notifications to EPD for this Project during the reporting period is presented in Table 4‑1 below.

Table 4‑1          Status of Environmental Submissions, Permits and Licenses

Item

Description

Date of Application/ Submission

Status

1.

Environmental Permit (EP No. EP-121/2002)

4 Feb 2002

 

Valid

2.

Billing Account under Waste Disposal (Charges for Disposal of Construction Waste) Regulation (Ref. No.: 7006285)

Approved on

16 Nov 2007

Valid

3.

Waste Management Plan

v2.3 approved on 25 Jul 2008

 

v2.3: valid

v3.3: submitted and pending for EPD comment

4.

Registration as a Chemical Waste Producer under Waste Disposal (Chemical Waste) (General) Regulation (Ref. No.: WPN-5292-320-C3459-01)

2 Nov 2007

Approved by EPD on 26 Nov 2007

5.

Effluent Discharge Licence (Ref. No.: EP760/320/0128821)

Variation of License submitted on 10 Nov 2008

Approved by EPD on 5 Jan 2009 which superseded the previous licence

6.

Notification pursuant to Section 3(1) of the Air Pollution Control (Construction Dust) Regulation (Form NA)

EPD notified on 15 Jan 2008

Valid

7.

Notification of commencement of asbestos abatement work pursuant to Section 73 of the Air Pollution Control Ordinance

EPD notified on 4 Feb 2008

Valid.

Approved by EPD on 5 Mar 2008.

New submissions

 

No new submissions

 

 

4.3                   Waste Management Status

4.3.1              The C&D material & general refuse generated by the Project in the reporting month are shown in Table 4‑2. A trip ticket system has been implemented for all off-site waste disposals. (It was recorded that no ACM or DCM has been generated nor disposed of in Mar 2009.

Table 4‑2          Monthly Summary Waste Flow Table for 2009

Month

Actual Quantities of Inert C&D Materials Generated Monthly

Actual Quantities of C&D Wastes Generated Monthly

Total Quantity Generated

Broken Concrete

Reused in the Contract

Reused in other Projects

Disposed of at Public Fill

Metals

Paper/ Cardboard

Plastics

Chemical waste

Others (e.g. refuse)

(In tons)

(In tons)

(In tons)

(In tons)

(In tons)

(In ‘000 kg)

(In ‘000 kg)

(In ‘000 kg)

(In ‘000 kg)

(In ‘000 m3)

Est.

Act.

Est.

Act.

Est.

Act.

Est.

Act.

Est.

Act.

Est.

Act.

Est.

Act.

Est.

Act.

Est.

Act.

Est.

Act.

Jan

0.95

0.269

-

0

-

0.269

-

0

1.22

0

210

49.6

0.1

0

0.1

0

0.0922

0

0.05

0.018

Feb

0.95

0

-

0

-

0

-

0

0.95

0

210

155.1

0.1

0

0.1

0

0.0922

0

0.05

0.009

Mar

0.95

0

-

0

-

0

-

0

0.95

0

210

235.2

0.1

0.082

0.1

0

0.0922

0

0.05

0.018

Apr

0.95

 

-

 

-

 

-

 

0.95

 

210

 

0.1

 

0.1

 

0.0922

 

0.05

 

May

0.95

 

-

 

-

 

-

 

0.95

 

210

 

0.1

 

0.1

 

0.0922

 

0.05

 

Jun

0.95

 

-

 

-

 

-

 

0.95

 

210

 

0.1

 

0.1

 

0.0922

 

0.05

 

Sub-total

5.7

 

-

 

-

 

-

 

5.97

 

1260

 

0.6

 

0.6

 

0.5530

 

0.3

 

Jul

0.95

 

-

 

-

 

-

 

0.95

 

210

 

0.1

 

0.1

 

0.0922

 

0.05

 

Aug

0.95

 

-

 

-

 

-

 

0.95

 

210

 

0.1

 

0.1

 

0.0922

 

0.05

 

Sep

0.95

 

-

 

-

 

-

 

0.95

 

210

 

0.1

 

0.1

 

1.6222

 

0.05

 

Oct

0.95

 

-

 

-

 

-

 

0

 

0

 

0.1

 

0.1

 

1.6222

 

0.05

 

Nov

0.95

 

-

 

-

 

-

 

0

 

0

 

0.1

 

0.1

 

1.6222

 

0.05

 

Dec

0.95

 

-

 

-

 

-

 

0

 

0

 

0.1

 

0.1

 

1.6222

 

0.05

 

Total

8.55

0.269

-

0

-

0.269

-

0

8.82

0

1890

439.9

1.2

0.082

1.2

0

7.6621

0

0.6

0.045

4.4                   Review of Environmental Monitoring Procedures

4.4.1              The monitoring works conducted by the Environmental Team have been reviewed regularly. No changes in the environmental monitoring procedures are considered necessary at this stage.

4.5                   Implementation Status of Environmental Mitigation Measures

4.5.1              An Implementation Schedule of Mitigation Measures from the EIA/ EM&A Manual has been given in Appendix C.

 

 

 

5.                      AUDIT FINDINGS

5.1                   Site Environmental Audit

5.1.1              Site inspection is to be carried out on a weekly basis to monitor proper implementation of environmental pollution control and mitigation measures for the Project. In this reporting month, one monthly site inspection was carried out jointly by the ER, Contractor, ETL and IEC on 19 March 2009 and additional weekly site inspections were carried out by the ER, Contractor and ET on 4, 12, and 24 Mar 2009.

5.1.2              Major findings provided by ET and those jointly provided by the ET and IEC on 19 March 2009 from the site inspection are summarised in Table 5‑1 below.

Table 5‑1          Summary of Environmental Site Inspections

Date of Inspection

Major Observations

Action(s)

4 Mar 2009

Lunch boxes were observed inside a few recycling bins again. The Contractor was urged to provide enough direction to the workforce on disposal of refuse.

The condition of recycling bins has improved, but the Contractor was reminded to provide sufficient rubbish bins at the site.

 

 

Stagnant water was observed at several places including the ground floor of the incineration plant.

The Contractor has applied mosquito oil regularly to any stagnant water. The Contractor was reminded to take all measures to reduce chance of mosquito breeding.

 

The housekeeping needs to be improved as general refuse such as lunch boxes and paper cups were found on site.

The tidiness of the site has improved.

12 Mar 2009

The Contractor was reminded to reinstate the sedimentation tank for discharge of effluent.

One of the two sedimentation tanks on site has been reinstated. An upstream manhole has been identified for the reinstatement of sedimentation tank. The Contractor was urged to reinstate the remaining tank as soon as possible.

19 Mar 2009

Waste was noted not properly collected e.g. waste plastic bottles.

The waste plastic bottle was removed. The Contractor was reminded to dispose refuse including waste bamboo to maintain better house-keeping.

24 Mar 2009

No major observations.

-

5.2                   Site Effluent Discharge/WPCO Effluent Discharge

5.2.1              A WPCO effluent discharge licence was initially granted by EPD on 10 Mar 2008 and was subsequently replaced by another one issued on 15 Mar 2008. In order to cope with the recent site condition, the Contractor has applied for a new WPCO effluent discharge licence on 31 Oct 2008 and the licence was granted on 5 Jan 2009.

5.2.2              Effluent discharge sample was collected on 7 Feb 2009 and test results have shown compliance with the Effluent Discharge License Criteria.

5.2.3              No effluent discharge sampling was carried out in this reporting month. It will be followed-up and updated in the coming EM&A report.

 

 

6.                      Environmental COMPLAINTS AND NON-COMPLIANCE

6.1                   Summary of Environmental Complaints, Notifications of Summons and Successful Prosecutions

6.1.1              No environmental complaints have been received during the reporting month. Appendix C presents the environmental complaint event contingency plan of the Project and Table 6‑1 below presents a statistics of complaints, notification of summons and successful prosecution since the commencement of the Project.

Table 6‑1          Summary of Environmental Complaints and Prosecutions

Complaints Logged

Summons Served

Successful Prosecutions

Mar 2009

Cumulative

Mar 2009

Cumulative

Mar 2009

Cumulative

0

0

0

0

0

0

6.1.2              No environmental complaint, notification of summons and prosecution has been received or made against the Project in this reporting month.

6.2                   Environmental Enquires

6.2.1              No environmental enquiries were received during the reporting month.

6.3                   Environmental Events

6.3.1              No unusual events were recorded during the reporting month.

6.4                   Environmental Exceedance/ Non-compliance

6.4.1              The Event and Action Plan for air quality (dust) is presented in Appendix B.

Air Quality - Dust

6.4.2              No exceed of Action and Limit Levels for 1-hour TSP and 24-hour TSP was recorded in the reporting month.

Waste Management

6.4.3              Not applicable.

Summary of Exceedances

6.4.4              Table 6‑2 summarises the total number of exceedances for air quality recorded during the reporting period.

Table 6‑2          Summary of Exceedances

Parameters

Total no. of Measurements

Action Level Exceedance

% of Action Level Exceedance

Limit Level Exceedance

% of Limit Level Exceedance

Air Quality

21

0

0%

0

0%

6.4.5              No exceedance was recorded in the reporting period.

 

 

7.                      future key issues

7.1                   Key Issues and Recommendations for Coming Month

7.1.1              Key issues to be considered in the coming month include: -

·       Demolition of brick wall and external wall from Incineration Plant;

·       Demolition of precast beams from Incineration Plant; and

·       Disposal of solidified dioxin/furan contaminated materials (“DCM”).

7.1.2              Based on the above key issues, the recommended mitigation measures to be implemented include the following: -

Air

·         Covers for dusty stockpiles and control of dust emissions from construction (demolition) works;

·         Haul road watering and vehicle wheel wash prior to exit;

·         All plant to be maintained to prevent any undue air emissions;

·         Cover all generated C&D materials as soon as they are formed or moved.

Noise

·         All plant shall be maintained to prevent any undue noise nuisance.

·         Use quiet plants during demolition whenever possible.

·         No construction activities during holidays.

·         The outer walls for each part of the building should be demolished at last to facilitate the use of natural noise barrier.

Water

·         All wheel wash water shall be diverted to a sediment pit before discharge;

·         All fuel cans, generators shall be placed within a bunded area; and any fuel spills shall be mopped up or excavated and disposed of as necessary;

·         All washout from concrete mixer shall be collected properly to avoid direct discharge.

·         All ponding water shall be cleared as soon as possible.

Waste

·         Different types of waste should be segregated, stored, transported and disposed of in accordance with the relevant legislative requirements and guidelines;

·         Records of quantities of wastes generated, recycled and disposal (with locations) shall be kept.

Asbestos

·         Removal, handling, transportation and disposal of the ACM in line with relevant regulations.

Dioxin

·         Removal, handling, transportation and disposal of the DCM in line with relevant regulations.

 

 

8.                      conclusion and recommendation

8.1                   Conclusions

8.1.1              EM&A was performed in March 2009 during which some site works have continued. All monitoring and audit results in the reporting month were checked and reviewed.

8.1.2              Airborne dust monitoring continued due to the demolition work during the reporting month. In general, the Contractor has been reasonably responsive to all required mitigation measures and ET’s recommendations made during weekly environmental site inspections in this reporting month.

8.1.3              No environmental complaints, notification summons or successful prosecutions have been received or made against this Project in this reporting month.

8.2                   Recommendations

8.2.1              No further recommendations made at this stage pending more site progress achieved.

Appendix A  Environmental Quality Performance Limits


 

 

Action and Limit Levels for 24-hour TSP

 

Monitoring Station

Action Level (mg/m3)

Limit Level (mg/m3)

A1

179

260

 

Action and Limit Levels for 1-hour TSP

 

Monitoring Station

Action Level (mg/m3)

Limit Level (mg/m3)

A1

345

500

 

 

 

Appendix B  Event and Action Plans

Table B‑1         Event and Action Plan for Air Quality

EVENT

ACTION

ET

IEC

ER

CONTRACTOR

ACTION LEVEL

1. Exceedance for one sample

 

1. Identify source

2. Inform IEC and ER

3. Repeat measurement to confirm finding

4. Increase monitoring frequency to daily

1. Check monitoring data submitted by ET

2. Check Contractor’s working method

 

1. Notify Contractor

2. Check monitoring data and Contractor's working methods     

1. Rectify any unacceptable practice

2. Amend working methods if appropriate

 

2. Exceedance for two or more consecutive samples

1. Identify source

2. Inform IEC and ER

3. Repeat measurements to confirm findings

4. Increase monitoring frequency to daily

5. Discuss with Contractor , IEC and ER for remedial actions required

6. If exceedance continues, arrange meeting with IEC and ER

7. If exceedance stops, cease additional monitoring

1. Checking monitoring data submitted by ET

2. Check Contractor’s working method

3. Discuss with ET and Contractor on possible remedial measures

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

5. Supervise implementation of remedial measures

 

1. Confirm receipt of notification of failure in writing

2. Notify Contractor

3. Check monitoring data and Contractor's working methods

4. Discuss with IEC and Contractor on potential remedial actions

5. Ensure remedial actions properly implemented

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

2. Implement the agreed proposals

3. Amend proposal if appropriate

LIMIT LEVEL

 

1. Exceedance for one sample

 

1. Identify source

2. Inform ER and EPD

3. Repeat measurement to confirm finding

4. Increase monitoring frequency to daily

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

1. Checking monitoring data submitted by ET

2. Check Contractor’s working method

3. Discuss with ET and Contractor on possible remedial measures

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

5. Supervise implementation of remedial measures

1. Confirm receipt of notification of failure in writing

2. Notify Contractor

3. Check monitoring data and Contractor's working methods

4. Discuss with ET Leader and Contractor potential remedial actions

5. Ensure remedial actions properly implemented

1. Take immediate action to avoid further exceedance

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

3. Implement the agreed proposals

4. Amend proposal if appropriate

 

2. Exceedance for two or more consecutive samples

1. Identify source

2. Inform IEC, ER and EPD the causes & actions taken for the exceedances

3. Repeat measurement to confirm findings

4. Increase monitoring frequency to daily

5. Investigate the causes of exceedance, Contractor’s working procedures to identify possible mitigation

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

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

8. If exceedance stops, cease additional monitoring

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

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

3  Supervise the implementation of remedial measures

 

 

 

1. Confirm receipt of notification of failure in writing

2. Notify Contractor

3. Carry out analysis of Contractor's working procedures with IEC to determine possible mitigation to be implemented

4. Discuss amongst Environmental Team Leader and the Contractor potential remedial actions

5. Review Contractor's remedial actions whenever necessary to assure their effectiveness

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

1. Take immediate action to avoid further exceedance

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

3. Implement the agreed proposals

4. Resubmit proposals if problem still not under control

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

 

Appendix C  Schedule of Mitigation Measures from the EIA/ EM&A Manual and Event Contingency Plan for Environmental Compliant

Table C‑2         Implementation Schedule of Recommended Mitigation Measures From the EIA

No.

Activity

Mitigation/EIA Recommendations

Responsibility for Implementation

Location/Duration completion of measures

Implementation Stage

Relevant Guidelines Legislation

Implementation Status ^

1

Ash Disposal

 

 

 

 

 

 

I

Treatment

Reconfirm extent of contaminated ash deposits by sampling for dioxins and furans.  Handling, transportation and disposal of the ash waste in line with relevant regulations.  Collection, immobilisation and testing of waste for disposal to landfill shall be carried out according to the relevant regulations and recommendations of the EIA including immobilisation by collection and mixing the ash material with cement.  Pilot mixing and TCLP tests should establish the ratio of cement to ash to the satisfaction of EPD.  Ash waste to be treated and placed into steel drums lined with plastic sheeting.  The drums should be adequately sealed and in new or good condition.  Prior agreement of the disposal criteria from EPD and agreement to disposal from the landfill operator must be obtained.

CEDD’s Contractor

KCIP work areas. Duration of the ash removal

A@

1, 10, EIA

P

II

Disposal

To monitor the disposal of waste at landfills, a “trip-ticket” system (WBTC No. 5/99) for all solid waste transfer/disposal operations should be implemented.  The system should be included as a contractual requirement, and monitored by the Environmental Team and audited by the Independent Checker (Environment).

CEDD’s Contractor

As above

A

1, 5, 9

ü

III

Asbestos Removal

An asbestos abatement programme should be submitted to EPD for approval prior to the commencement of the asbestos abatement work.

CEDD and Contractor

As above

A

4

ü

2

Demolition

 

 

 

 

 

 

A1

Non-blasting Methodology

Demolition by Non-Blasting Methodology Only.  All structures and buildings should be demolished and removed prior to demolition of chimneys

CEDD

KCIP work areas. Duration of the demolition

C#

8

ü

A2

Waste Management Plan.

A Waste Management Plan shall be submitted to EPD for approval.  The Waste Management Plan shall include, but not be limited to, the findings of the Waste Management Paper of the EIA, the types, quantities, disposal methods, timing, and locations of final disposition, responsibilities for implementation and the possible recycling and reuse of wastes generated.

CEDD and Contractor

Prior to commencement of the demolition works

Prior to C#

1

ü

B

Material Storage

Covers for dusty stockpiles and control of dust emissions from construction (demolition) works requires appropriate dust control measures to be implemented in accordance with the requirements in the Air Pollution Control (Construction Dust) Regulation.

CEDD’s Contractor

KCIP work areas. Duration of the demolition

C

4

ü

C

Vehicle movement

Haul road watering, vehicle wheel wash prior to exit. Where practical, access roads should be protected with crushed gravel.

CEDD’s Contractor

As above

C

4

P

D

Plant maintenance

All plant shall be maintained to prevent any undue air emissions.

CEDD’s Contractor

As above

Prior to start of works

4

ü

E

Demolition Techniques

Selection of non-blasting demolition techniques to minimise noise and vibration. 

CEDD’s Contractor

As above

C

8

ü

F

Plant maintenance

 

All plant shall be maintained to prevent any undue noise nuisance.

CEDD’s Contractor

As above

C

2, 3

ü

G

Wheel wash

All wheel wash water shall be diverted to a sediment pit.

CEDD’s Contractor

As above

C

5

P

H

Sediment control

Sediment removal facilities shall provided and be maintained and excavated as necessary to prevent sedimentation of channels.  Perimeter channels should be provided. Works should be programmed for the dry season where feasible.  Environmental guidelines for the handling and disposal of discharges from construction sites, as stipulated in the Practice Note for Professional Persons, Construction Site Drainage (ProPECC PN 1/94) to be followed.

CEDD’s Contractor

As above

C

5, 12

N/A

I

Surface water diversion

All clean surface water shall be diverted around the site.

CEDD’s Contractor

As above

C

5, 12

X

J

Fuel can storage

All fuel cans shall be placed within a bunded area. Any fuel spills shall be mopped up as necessary.

CEDD’s Contractor

As above

C

5,6

ü

K

Material, plant movement & fuel can filling.

Any fuel or oil spills shall be excavated and disposed of.

CEDD’s Contractor

As above

C

6,7

ü

L

Generators

All generators shall be placed within a bunded area. Any fuel spills shall be mopped up as necessary.

CEDD’s Contractor

As above

C

5,6,7

ü

M

Material containers

All empty bags and containers shall be collected for disposal.

CEDD’s Contractor

As above

C

6,7

ü

N

Worker generated litter and Waste

Litter receptacles shall be placed around the site. Litter shall be taken regularly to the refuse collection points. Chemical toilets (or suitable equivalent) should be provided for workers. Any canteens should have grease traps.

CEDD’s Contractor

As above

C

6

ü

O

Neighbourhood nuisance

All complaints regarding construction works shall be relayed to the environmental team.

CEDD’s Contractor

As above

C

1, 6

ü

P

Legal requirements

Different types of waste should be segregated, stored, transported and disposed of in accordance with the relevant legislative requirements and guidelines

CEDD’s Contractor

As above

C

1,6

ü

Q

On-site separation

On-site separation of municipal solid waste and construction/demolition wastes shall be conducted in order to minimise the amount of solid waste to be disposed to landfill.

CEDD’s Contractor

As above

C

1, 11

ü

R

Temporary storage area

Separated wastes should be stored in different containers, skips, or stockpiles to enhance reuse or recycling of materials and encourage their proper disposal.

CEDD’s Contractor

As above

C

1, 11

ü

S

Record of wastes

Records of quantities of wastes generated, recycled and disposed (with locations) shall be kept.

CEDD’s Contractor

As above

C

1, 9

ü

T

Trip-ticket system

To monitor the disposal of waste at landfills and control fly-tipping, a “trip-ticket” system under WBTC N0.5/99 for all solid waste transfer/disposal operations should be implemented.  The system should be included as a contractual requirement, and monitored by the Environmental Team and audited by the Independent Checker (Environment).

CEDD’s Contractor

As above

C

1, 9

ü

3

Soil Remediation Phase

 

 

 

 

 

 

U

B, C, D, F, G, I, J, K, L, M, N, O, P, Q, R, S and T as above

As above (see W for soil remediation).

As above

As above

R

As above

N/A

V

De-watering

Collect and recycle extracted groundwater and leachate by mixing with cement for soil remediation.  Environmental guidelines for the handling and disposal of discharges from construction sites, as stipulated in the Practice Note for Professional Persons, Construction Site Drainage (ProPECC PN 1/94) to be followed.  Any surplus groundwater and leachate requiring disposal to be disposed of under the relevant legislation or treated to meet the standards given in Table 9a of the WPCO TM.

CEDD’s Contractor

KCIP work areas. Duration of the soil remediation

R

5

N/A

W

Immobilisation

Immobilisation and testing of waste soil shall be carried out according to the relevant regulations and recommendations of the EIA including immobilisation by collection and mixing the contaminated soil material with cement.  Pilot mixing and TCLP tests should verify the effectiveness and establish the ratio of cement to soil to the satisfaction of EPD.  Reassurance confirmatory sampling shall be carried out to confirm the extent of contamination.  Soil waste to be cast in blocks and replaced in the ground.  Extracted soils and materials and stabilisation/solidification to be conducted in bunded area to prevent surface run-off.  See also item 2(H) above.  Final soil decontamination report to be submitted to EPD.

CEDD’s Contractor

As above

R

1, 10

N/A

4

Monitoring and Audit

To be carried out in accordance with the Schedule in the EM&A Manual.

CEDD*/ Contractor/ RSS

KCIP works areas

During demolition and at end of demolition throughout execution of Remediation Action Plan

C

1

ü

*              Normally undertaken by a specialist monitoring team employed directly by the proponent and audited by the Independent Checker (Environment)

@             A = during ash removal (before demolition)

#              C = during construction (i.e. demolition phase).

*              R = during soil remediation phase (after demolition)

^              Implementation Status:

ü             implemented

Ï             not implemented

P              partially implemented

X             rectified by Contractor

N/A          not applicable

1.        Environmental Impact Assessment Ordinance Technical Memorandum (EIAO)

2.        Noise Control Ordinance

3.        The ProPECC Note PN2/93 (Construction Noise daytime limits)

4.        Air Pollution Control Ordinance (APCO)

5.        Water Pollution Control Ordinance (WPCO)(Cap. 358)

6.        Waste Disposal Ordinance (Cap 354)

7.        Waste Disposal (Chemical Waste)(General) Regulation (Cap 354)

8.        Draft Code of Practice on Demolition of Buildings (BD, 1998)

9.        Works Bureau Technical Circular No. 5/99, Trip-ticket System for Disposal of Construction and Demolition Material

10.     Guidance Notes for Investigation and Remediation of Contaminated Sites

11.     Works Bureau Technical Circular No. 5/98, On Site Sorting of Construction Waste on Demolition Sites

12.     ProPECC Note PN 1/94Construction Site Drainage

 

 

 

 

Table C‑3         Event Contingency Plan for Environmental Complaints

Step

Day

Action

Contractor

ER

ET

IEC

1

1

Party receiving complaint shall create a new complaint record. If the Contractor receives a complaint, he shall pass the information to the ER. 

¨

¨

¨

 

2

1

ER to ensure details of complaint provided to Contractor (if complaint not originally received by the Contractor), ET and IEC

 

¨

 

 

3

2

Within 1 working day after the receipt of the Notification of Complaint, provide ER relevant works site information, e.g. types and locations of construction works.

¨

 

 

à

4

2

Investigate the complaint to determine its validity, and to assess whether the source of the problem is due to the works activities.  Report the validity of the complaint to ER.

 

 

 

¨à

5

2

If complaint is valid and due to works, ER shall notify the Contractor.  If complaint is invalid or not due to works, Go to Step 12.

 

¨

 

 

6

2

Propose mitigation measures to ER within 1 working day of the receipt of the Notification.

¨

 

 

à

7

2

Review and agree with the proposed mitigation measures and make recommendations where necessary.

 

¨à

 

¨à

8

2

Implement the mitigation measures once they have been agreed.

¨

 

 

 

9

4

Audit the implementation of the proposed mitigation measures on site within 2 working days after measures have been agreed.

 

¨à

 

¨à

10

-

Undertake additional monitoring to verify the situation where necessary.

 

 

¨

 

11

4

Report the investigation results and subsequent actions taken to ER within 2 working days after the implementation of mitigation measures.

¨

 

¨

 

12

5

Respond to the complainant within 1 working day after receiving the investigation report.

 

¨

 

 

13

25

If no further comments or complaints are received from the complainant within 20 working days after responding to the complainant, close the complaint record.  If the complainant has further comments or complaints on the same issue, notify other parties on the same day and go to step 2.

 

¨

 

¨à

¨         Action Party

à          Enter comments/ proposals into appropriate complaint record where applicable

Appendix D  EM&A Schedule

 

Appendix E          Air Quality Monitoring Results and Graphical Presentation

 

 

 


 

 

 

 

 


Appendix F Calibration Certificates

 

 

Appendix G Works Programme

Appendix H          Weather Information from HKO