kcrc east rail extension contract no. tcc-400 tai wai station

KCRC East Rail ExtensionContract No. TCC-400 Tai Wai Station

No.25 EM&A Report

Prepared for

Maeda Corporation

By

Environmental Management Division

Hong Kong Productivity Council

7th March 2003

KCRC East Rail Extensions

Contract No. TCC-400 Tai Wai Station

(Project Code: 01016494)

No. 25 EM&A Report

Quality Index

Date Reference No. Originator Approved by

7th March 2003 01016494/Mrep25 Daniel Sum K. L. Tsang

TABLE OF CONTENTS

EXECUTIVE SUMMARY

1. INTRODUCTION

1.1 Scope of the Report1.2 Structure of the Report

2. PROJECT INFORMATION

2.1 Background2.2 Site Description2.3 Project Organisation2.4 Project Work Program

3. MONITORING & AUDIT REQUIREMENTS

3.1 Environmental Monitoring and Audit3.2 Air Quality3.3 Noise3.4 Action and Limit Levels3.5 Event/Action Plan

4. IMPLEMENTATION STATUS ON ENVIRONMENTAL PROTECTION REQUIREMENTS

5. ENVIRONMENTAL LICENCING AND PERMITTING REQUIREMENTS

6. MONITORING RESULTS

6.1 Air Quality6.2 Noise

7. AUDIT RESULTS

7.1 Air Quality7.2 Noise7.3 Waste Management7.4 Site Inspection by ET7.5 Site Inspection by IEC7.6 Site Inspection by EPD

8. COMPLAINTS, NOTIFICATIONS OF SUMMONS AND SUCCESSFUL PROSECUTIONSDURING THE REPORTING PERIOD

9. FUTURE KEY ISSUES

10. COMMENTS, RECOMMENDATIONS AND CONCLUSIONS

LIST OF APPENDICES

Appendix A Contact Details of the Project Organization

Appendix B Tentative Work Program

Appendix C Details of Environmental Sensitive Receivers

Appendix D Calibration Records of High Volume Air Samplers, Real-time Aerosol Monitor and

Weather Station

Appendix E Calibration Records of Sound Level Meter and Calibrator

Appendix F Event/Action Plan for Air Quality and Noise

Appendix G Implementation Status of Environmental Protection Requirements

Appendix H 1-hr. and 24-hr. TSP Monitoring Results

Appendix I Graphical Presentation of 1-hr. and 24-hr. TSP Monitoring Results

Appendix J Wind Data Monitoring Results

Appendix K Noise Monitoring Results

Appendix L Graphical Presentation of Noise Monitoring Results

Appendix M Environmental Monitoring Schedules from February to May 2003

Appendix N Complaint Handling Procedures and Corrective and Preventive Actions

Appendix O Complaint Log Book and Corrective and Preventive Action Request Log Book

Appendix P Work Site (Not to Scale)

Appendix Q Organization Structure and Lines of Communications of the Tai Wai Station

Project Team for Environmental Management

Appendix R Air Quality Monitoring Station AM1 and Noise Monitoring Station NM2

Appendix S Cumulative Statistics on Notification of Summons and Successful Prosecutions

EXECUTIVE SUMMARY

This is the No.25 EM&A Monthly Report for the East Rail Extensions - Tai Wai to Ma On Shan (MOSRail) for Contract TCC-400 Tai Wai Station (the Project). This report summarizes the monitoring worksfrom 1st to 28th February 2003.

Summary of Construction Works During the Reporting Period

The major construction works during normal daytime (i.e. Monday to Saturday exclude public holidaysfrom 0700 to 1900 hr) included construction of super-structure at Area 1, building services installation atArea 1 and 2, drainage works at Area 6 as well as construction of pile cap at Area 12.

The major construction works during restricted hours from 17 th to 19th February 2003 (i.e. all days from2300 to 0700 hr of the next day) included erection of tower crane at Area 13 and 14. MAEDA hasmaintained valid construction noise permit during the said period.

Air Quality

For 1-hr. TSP monitoring, a total of 12 sets of measurement were carried out during the reporting period andall measurement results were below the corresponding Action/Limit Levels. No Notification ofExceedance was issued during the reporting period.

For 24-hr. TSP monitoring, a total of four sets of measurement were carried out during the reporting periodand all measurement results were below the corresponding Action/Limit Levels. No Notification ofExceedance was issued during the reporting period.

Noise

For Daytime noise measurement (i.e. 0700 to 1900 hr Monday to Saturday exclude public holidays) interms of LAeq(30min), a total of four sets of measurement were carried out during the reporting period. Two setsof measurement results on 12th and 18th February exceeded the Limit Level of 70 dB(A) and one set ofmeasurement on 24 th February exceeded the corresponding Limit level (65dB(A)) during the schoolexamination period. Based on the observation by the monitoring team, the dominant noise sources duringthe said monitoring periods were the bored piling works for the KCRC property as well as the traffic noisealong Che Kung Miu Road which were not related to the project activities.

For Night-time noise measurement (i.e. Any day 2300 – 0700 on the next day) in terms of LAeq(5min), a totalof one set comprising three consecutive 5-minute measurement was carried out on 19th February 2003 andall measurement results exceeded the Limit Level (40 dB(A)). Based on the on-site observation made bythe sampling team during the measurement, the dominant noise source for elevated measurement result wasthe traffic noise along Che Kung Miu Road. In view of this, the exceedance was not related to the projectactivities.

Waste Management

For Excavated Materials, 10 m3 of the inert excavated materials were arranged to be reused at the site forfilling. At the time of reporting, about 10 m3 were stored at Area 6 & 8 of the site.

On the other hand, about 137 m3 C&D Waste were produced at the site during the reporting period andabout 132 m3 were collected by licenced collector for disposal. At the time of reporting, about 9 m3 werestored at the Area 1, 2, 8 & 10 of the site.

For General Refuse, about 2.2 ton were produced at the site during the reporting period in which 2 ton werecollected by the licenced collectors for disposal and 0.2 ton were arranged to be reused at the site. At the

time of reporting, about 1.1 ton were stored at Area 7, 8 and site office.

Site Inspection

Site inspections conducted by the ET were carried out on 6th, 13th, 18th and 27th February 2003. The majorfindings are summarized as follows:

Item Findings Proposed Mitigation Measures Environmental Outcome1 Accumulation of sediment was

observed at the U-channel atArea 8 and 10

MAEDA has arranged theclearance of sedimentaccordingly

The accumulated sediment wasremoved

2 Stagnant water inside thedesilting tank at Area 1, 8 and12 which might be potentialsource for mosquito breeding

MAEDA have arranged toremove the water

The stagnant water wasremoved

IEC Audit was carried out on 19 th February 2003 and the major observations are as follows:Item Findings Proposed Mitigation Measures Environmental Outcome

1 Accumulation of sediment wasobserved at the U-channelconnected to Shing Mun River

MAEDA has arranged theclearance of sedimentaccordingly

The accumulated sediment wasremoved on 21st February 2003

2 Backoe emitting water smoke MAEDA has arranged Backoeoff-site for maintenance

The Backoe was removed

Site inspection was conducted by EPD on 25th February 2003 and no particular comments were givenduring the visit.

Complaint Log

No complaints were received by the ER, the Contractor and ET during the reporting period.

Notification of Summons and Successful Prosecutions

No notification of summons were received during the reporting period.

Future Key Issues

The tentative program of major site activities as well as the impact prediction and control measures for thenext three months are summarized as follows:

Construction Works Major ImpactPredication

Control Measures

Construction of super-structure at Area 1

l Noise impact l Schedule work time to avoid persistent noisyoperation

l Control the number of plants

l Deployment of noise barrier

Earthworks at Area 6 l Generation of siltywastewater

l Gullies and the footing of hoardings will besealed to avoid untreated wastewater drainedinto the existing drainage system.

l Effluent will be diverted to the sedimentationtank (WetSep) at Area 8 for proper treatmentbefore discharge.





Construction of viaductacross Mei Tin Road




KCRC Web Site

The monthly EM&A reports and monitoring data can be accessed on the web athttp://www.env-ere.kcrc.com.

KCRC East Rail Extensions TCC-400Tai Wai Station

Prepared for Maeda CorporationNo.25 EM&A Monthly Report

Environmental Management DivisionHong Kong Productivity Council

GPS\EMA\01006494\MREP25.DOCPage 1

INTRODUCTION

1.1 Scope of the Report

This is the No.25 EM&A Monthly Report for the KCRC East Rail Extensions – Tai Wai to Ma On Shan

(MOS Rail) TCC-400 Tai Wai Station (the Project). This report is prepared by the Environmental

Management Division of Hong Kong Productivity Council (HKPC) for submission to Maeda

Corporation.

This report summarizes the monitoring works from 1 st to 28th February 2003.

1.2 Structure of the Report

The structure of the report is as follows:

Section 1: INTRODUCTION – details the scope and structure of the report.

Section 2: PROJECT INFORMATION – summarizes the background and scope of theproject, project organization, construction programme and the construction worksundertaken during the reporting period.

Section 3: MONITORING & AUDIT REQUIREMENTS – summarizes the monitoringprogrammes, Action and Limit Levels, Event Action Plans, environmentalmitigation measures as recommended in the EIA Report and relevantenvironmental requirements.

Section 4: IMPLEMENTATION STATUS ON ENVIRONMENTAL PROTECTIONREQUIREMENTS – summarizes the implementation of environmental protectionmeasures during the reporting period.

Section 5: ENVIRONMENTAL LICENCE AND PERMITTING REQUIREMENTS –summarizes the environmental licences and permits obtained or being appliedduring the reporting period.

Section 6: MONITORING RESULTS – reports the monitoring results obtained in thereporting period.

Section 7: AUDIT RESULTS – summarizes the audit findings in the reporting period.

Section 8: COMPLAINTS, NOTIFICATIONS OF SUMMONS AND SUCCESSFULPROSECUTIONS DURING THE REPORTING PERIOD – summarizes thecomplaints, notifications of summons and successful prosecutions recorded duringthe reporting period.

Section 9: FUTURE KEY ISSUES – summarizes the future key issues as reviewed from theworks programme and work method statements.

Section 10: COMMENTS, RECOMMENDATIONS AND CONCLUSIONS





2. PROJECT INFORMATION

2.1 Background

Maeda Corporation (MAEDA) has been commissioned by the Kowloon-Canton Railway Corporation

(KCRC) to undertake the construction of Tai Wai Station, which is one of the stations of the East Rail

Extension’s – Tai Wai to Ma On Shan (MOS Rail).

The contract award date of the Tai Wai Station Project is 27 th November 2000. The construction works of

the Project begin on 19th February 2001. The Project is scheduled to complete by February 2005.

2.2 Site Description

Tai Wai Station is located in a rather dense urban environment, surrounded by schools and residential

high-rises building.

The work site is shown on Appendix P.

2.3 Project Organisation

Appendix Q presents the organization structure of the Project, identifies key members of the Project

Team with environmental responsibilities, and illustrates their lines of communication. The phone and

fax numbers of contact persons at the EPD, KCRC, IEC, MAEDA and HKPC are documented in

Appendix A.

2.4 Project Work Program

The tentative work program for the whole Project is presented in Appendix B. The details of the

construction activities are shown in Table 2.1. The summary of the implementation of environmental

mitigation measures at the site is reported in Section 4 of this Report. The details of the environmental

sensitive receivers are shown in Appendix C.





Table 2.1 - List of Site Activities in February 2003

Area Details of Construction Works1 Construction for superstructure

Wall pastering and painting

Floor screeding

Blockwall erection

Installation of Ticket Office

Installation of roller shutter

Building services installation

Waterproofing for track slab and roof

2 Building services installation

Wall plastering and painting

Floor screeding

Installation of roller shutter, door frame and windows

6 Drainage works

10 Erect of working platform

11 Hoarding erection

12 Construction of pile cap and super-structure

Drainage works

Backfilling and de- stressing anchors

13 & 14 Construction of Railway bridge and Platform bridge

Erection of tower crane*

Note*: Construction works were carried out from 17th to 19 th February 2003 during night time and the Contractor has

maintained valid Construction Noise Permit.





3. ENVIRONMENTAL MONITORING & AUDIT

3.1 Environmental Monitoring & Audit

The monitoring of the environmental impact is carried out by the independent Environmental Team (ET).

The monitoring work includes air quality monitoring of 1-hr and 24-hr total suspended particulate (TSP)

at one selected dust monitoring location, and noise monitoring of LAeq(5min) noise impact at one selected

noise monitoring location.

The environmental monitoring schedule in the reporting period is shown in Appendix M.

3.2 Air Quality

Monitoring Locations

According to Appendix J of the Particular Specification of East Rail Extensions Tai Wai Station Contract

No. TCC-400, one Air Sensitive Receiver (ASR) close to the Tai Wai Station had been identified as

possible location for conducting the monitoring programme. The location is shown in Appendix R and

listed in Table 3.1 below.

Table 3.1 - Air Sensitive Receiver Identified as Possible Location

for Air Quality Monitoring

ASR No. Station I. D. Description Measurement Condition

24 AM1 Grandway Garden, Block 2TSP sampler was set up at the

podium adjacent to Block 2 whichwas about 5 m above ground (whichis adjacent to Tsuen Nam Road and

Mei Tin Road)

Note:

Following the receipt of complaint from the resident of Grandway Garden on 23rd March 2001 regarding the noise

generated from the operation of HVS, the monitoring location was relocated which was about 25 m from the original

location and the subsequent sampling at the new location was carried out since 28 th March 2001.





Wind data monitoring should be carried out at conspicuous location for logging wind speed and wind

direction near the dust monitoring location. Weather station has been established at the roof of the site

office in Area 8 and the wind data monitoring began on 2nd April 2001.

Monitoring Parameters and Frequency

The measurement conditions were in compliance under section 2.5.3 of the approved MOS EM&A

Manual.

Monitoring parameters for air quality monitoring includes 1-hr and 24-hr Total Suspended Particulates

(TSP) at one monitoring location. On the other hand, wind monitoring (wind speed and wind direction)

shall be carried out at conspicuous location for logging wind speed and wind direction near to the air

quality monitor station.

24-hr TSP monitoring shall be carried out once every six days where construction works are carried out.

On the other hand, three sets of 1-hr TSP monitoring shall be carried out once every six days where

construction works are carried out. Wind data monitoring shall be monitored continuously.

Monitoring Methodology

24-hr TSP level is to be measured in accordance with the standard high volume sampling method as set

out in Title 40 of the Code of Federal Regulations (40CFR), Chapter 1 (Part 50), Appendix B. This

method involves the drawing of air at a controlled rate into a high volume sampler (HVS) fitted with a

pre-conditioned and pre-weighted filter paper of size 8” x 10”. After sampling for 24 hours, the filter

paper with retained particles is to be folded in half lengthwise, placed in a labelled plastic bag and

returned to the ET’s laboratory for drying in a desiccator before being weighed on an electronic balance

with accuracy to 0.1 mg. Other information including the elapsed-timer meter reading for start and stop

of the HVS, identification and weight of the filter paper should be recorded on the field data record sheet.

The 24-hr TSP levels are then calculated from the ratio of the mass of particles retained on the filter paper

to the total volume of air sampled in accordance with the method as set out in Title 40 of the Code of

Federal Regulations (40CFR), Chapter 1 (Part 50), Appendix B. All the collected samples shall be kept

in good condition for 6 months before disposal. 24-hr TSP monitoring shall not be normally undertaken

in heavy rainy weather.

1-hr TSP level is to be measured with a handheld real-time aerosol monitor. This meter uses optical





sensors to analyze the incoming air stream, providing real time readout of particulate concentrations.

1-hr TSP monitoring shall not be normally undertaken in heavy rainy weather.

The wind sensors for wind speed and wind direction monitoring shall be installed at an elevated level 10

m above ground so that they are clear of obstructions or turbulence caused by the buildings. The wind

data shall be captured by a data logger and to be downloaded for processing at least once per month.

Field information such as general meteorological conditions and any significant adjacent dust producing

sources at each monitoring location are to be recorded during monitoring.

Monitoring Equipment

24-hr TSP level is to be measured with high volume samplers conforming to the requirements of 40CFR

Part 50. For 1-hr TSP measurement, a handheld real-time aerosol monitor is to be used. Wind data in

terms of wind speed and direction is to be measured using wind data monitor set up at conspicuous

location which is to be agreed by ER. Details of the monitoring equipment are given in Table 3.2.

Table 3.2 - Air Quality Monitoring Equipment

Parameter Equipment Model

24-hr TSPMeasurement

GRASEBY GMWS-2310-105 High VolumeAir Sampling System

1-hr TSPMeasurement

DustTrak Aerosol Monitor or Laser DustMonitor LD-1(L)

Wind data Davis Weather Monitor II or equivalent

Equipment Calibration

High volume samplers are to be calibrated with orifice calibrator. Five-point calibration is to be carried

out on a bi-monthly basis or after changing of carbon brush. For the handheld real-time aerosol monitor,

span check is to be conducted on a monthly basis. The electronic balance used for the weighing of filter

paper is to be calibrated regularly with a traceable weight standard. The wind data monitoring equipment

shall be re-calibrated once every six months. The methods of calibration of the said equipment are

referred to the instruction manuals provided by the manufacturers respectively.





The calibration records of the high volume air sampler, handheld real-time aerosol monitor and weather

station are shown in Appendix D.

3.3 Noise

Monitoring Locations

According to Appendix J of the Particular Specification of East Rail Extensions Tai Wai Station Contract

No. TCC-400, one Noise Sensitive Receiver (NSR) close to the Tai Wai Station had been identified as

possible location for conducting noise monitoring for baseline purpose and for the construction phase.

The location is listed in Table 3.3 below and is also depicted in Appendix R.

Table 3.3 - Noise Monitoring Locations

MonitoringLocation

MonitoringParameters

Description Frequency MeasurementCondition

NM2 LAeq(30 min) interms of sixconsecutivesets of LAeq(5

min)

Ng Yuk SecondarySchool

Once every six daysduring the

monitoring period

Roof-top building;façade measurementfacing Che Kung Miu

Road, 20 m aboveground

Note:

Monitoring station shall be at a point 1 m from the exterior of the sensitive receiver building facade

Monitoring Parameters and Frequency

The measurement conditions were in compliance under section 3.5.3 of the approved MOS EM&A

Manual.

Impact monitoring shall be carried out at the designated monitoring station during construction phase of

the project. The regular monitoring frequency of each station on a basis of once every six days when

noise generating activities are underway is as follows:

l One set of LAeq (30 min) as six consecutive LAeq (5min) between 0700 – 1900 hours on normal

weekdays;





l One set of LAeq (15min) as three consecutive LAeq (5min) between 1900 – 2300 hours on normal

weekdays (only if construction works is carried out during these hours);

l One set of LAeq (15min) as three consecutive LAeq (5min) between 2300 – 0700 hours of next day on

normal weekdays and holidays (only if construction works is carried out during these hours);

l One set of LAeq (15min) as three consecutive LAeq (5min) between 0700 – 2300 hours on holidays (only

if construction works is carried out during these hours).

On the other hand, the statistical results such as the L10 and L90 shall be obtained for reference.

Monitoring Methodology

Noise measurement shall be carried out at the assessment point located at about 1 m from the exterior of

the building façade. Field information such as general meteorological conditions and any dominant

noise sources at each monitoring location are to be recorded during monitoring. Wind speed

measurements are to be taken with a portable wind speed meter during monitoring. Noise measurement

is not to be conducted under a steady wind exceeding 5m/s or gust exceeding 10 m/s. Noise monitoring

is not conducted in the presence of fog and rain as well.

Monitoring Equipment

Sound level meters (SLMs) are to comply with specifications of the International Electrical Commission

Publication 651:1979 (Type 1) and 804:1995 (Type 1). Wind shield is to be fitted on the monitor during

use. Details of the monitoring equipment used for noise monitoring are summarized in Table 3.4:

Table 3.4 - Noise Monitoring Equipment

Equipment Function Equipment Model Used

Noise Level Measurement RION Precision Integrating Sound Level Meter NL-18

Calibration of Sound LevelMeter

RION Sound Level Calibrator NC-73





Equipment Calibration

Before and after each measurement, the reading of SLM is to be checked with the acoustic calibrator and

the measurements can only be accepted as valid if the calibration levels from before and after the noise

measurement agree to within 1.0 dB. Also, calibrations of the SLM and acoustic calibrator are to be

carried out annually. The calibration certificates of the SLMs and calibrator are shown in Appendix E.

3.4 Action and Limit Levels

Action and Limit levels of Air Quality

Baseline measurement of 1-hr. and 24-hr. TSP at one monitoring location were conducted in August and

September 2000. According to Section 2.7 of the EM&A Manual for MOS Rail (prepared by Binnie

Black & Veatch Hong Kong Limited dated January 2001), the Action/Limit Levels for the monitoring

location were established with the baseline results. The Action/Limit Levels of 1-hr. and 24-hr. TSP is

shown in Table 3.5.

Table 3.5 - 24-hr. and 1-hr. TSP Action and Limit Levels

Level (µg/m3) AM1

24-hr. TSP

Baseline Level

64.4

(32.9 – 106.0)

24-hr. TSP

Action Level

172

24-hr. TSP

Limit Level

260

1-hr. TSP

Baseline Level

282

(251 – 352)

1-hr. TSP

Action Level

367

1-hr. TSP

Limit Level

500





Note:

1. The detailed monitoring results are referred to the Baseline Monitoring Report (Final) prepared by Binnie

Black & Veatch Hong Kong Limited

2. Values presented in backets are the range of the measurement results

Action and Limit Levels of Noise

The Action/Limit Levels for construction noise as stipulated in the EM&A Manual are given in Table

3.6.

Table 3.6 - Noise Action and Limit Levels

Time Period Action Level Limit Level

0700 - 1900 hours onweekdays

When one documented complaint isreceived

70(1) dB(A)

1900 - 2300 hours onweekdays, and 0700 -2300 hours on general

holidays includingSundays


55(2) dB(A)

2300 - 0700 hours of alldays


40(2) dB(A)

Note:

1. Limit Level will be revised to 65 dB(A) during school examination period.

2. For works carried out within Designated Areas during restricted hours, Limit Levels given here are

suggestive only, given that Local Control Division of EPD will reserve the right to determine appropriate

Areas Sensitively Ratings and Limit Levels in the form of CNP conditions on a case by case basis. The

Contractor shall obtain a copy of Technical Memorandum on Noise from Construction Work in Designated

Areas for reference.

3.5 Event/Action Plan

The Event/Action Plan for Air Quality and Noise are shown in Appendix F.





4. IMPLEMENTATION STATUS ON ENVIRONMENTAL PROTECTION

REQUIREMENTS

The Contractor implemented various environmental mitigation measures as stipulated in the EIA Report

and the environmental requirements as stipulated in the Environmental Permit and Environmental

Management Plan. The implementation status during the reporting period is summarized in Appendix G.

In case of identification of non-conformance during the implementation of environmental mitigation

measures, remedial measures will be summarized in the Corrective and Preventive Action Request

(CPAR) form issued by the QA/QC & Environmental Engineer. The cumulative log of the CPAR is

summarized in the CPAR Logbook as shown in Appendix O of the Report.

5. ENVIRONMENTAL LICENCING AND PERMITTING REQUIREMENTS

The status of permit, licence and notification to EPD for all relevant environmental issues in this project

is summarized in Table 5.1 and Table 5.2 as of the reporting period.

Table 5.1 – Summary of the status of permit, licence and notification to EPD

as of the Reporting PeriodDescription Submission Date Issued Date Expiry

DateStatus

Further Environmental Permit(FEP)

(FEP No. FEP-01/039/2000)

22-Nov-00 21-Dec-00 -- Issued

Effluent Discharge Licence 29-Dec-00 27-Apr-01 26-Apr-06 IssuedApplication of Variation ofEffluent Discharge Licence

(Permit No. 2659)

30-Jan-02 14-May-02 26-Apr-06 Issued

Notification of ConstructionWork under APCO:

General Work 26-Nov-02 -- -- RenewDemolition of Happy Dragon

Creation Park23-Jan-00 31-Jan-01 -- Notified

Registration as Chemical WasteProducer pursuant to WDO

01-Feb-01 22-Mar-01 -- Issued





Table 5.2 - Summary of the status of CNP Application as of the Reporting Period

CNP Details Period SubmissionDate

IssuedDate

ExpiryDate

Status

Extension forErection and

dismantling H-beamacross Mei Tin Road

at Area 14(GW-TN0007-2003)

Any day from 2300- 0700 of the next

day

31-Dec-02 17-Jan-03 17-Jul-03 Issued

Extension forerection of

scaffolding at Area 1(GW-TN0016-2003)


day

7-Jan-02 24-Jan-03 21-Jul-03 Issued

Dismantling the catchfencing at Area 12


day

20-Feb-03 -- -- Acknowledgedreceipt





6. MONITORING RESULTS

6.1 Air Quality

1-hr. TSP Measurement

The 1-hr. TSP measurement results of the air monitoring location AM1 are detailed in Appendix H and

are also presented graphically in Appendix I . Table 6.1 summarizes the 1-hr. TSP measurement results

for the air monitoring location AM1.

Table 6.1 - 1-hr. TSP Measurement Results at AM1 in February 2003

1-hr. TSP (µg/m3)Range of

Measurements

Action Level(µg/m3)

No. ofExceedance

Limit Level(µg/m3)

No. ofExceedance

75-157 367 Nil 500 Nil

24-hr. TSP Measurement

The 24-hr. TSP measurement results of the air monitoring location AM1 are detailed in Appendix H and

presented graphically in Appendix I. Table 6.2 summarizes the 24-hr. TSP measurement results for the

air monitoring location AM1.

Table 6.2 - 24-hr. TSP Measurement Results at AM1 in February 2003

24-hr. TSP (µg/m3)Range of

Measurements

Action Level(µg/m3)

No. ofExceedance

Limit Level(µg/m3)

No. ofExceedance

68-98 172 Nil 260 Nil

The wind data recorded throughout the monitoring period is enclosed in Appendix J.

Weather and other Influencing Factors During the Monitoring Period

Details of the weather and other influencing factors as may be observed during the monitoring works for

1-hr. and 24-hr. TSP during the monitoring period are shown in Appendix H.





6.2 Noise

Based on the site diary, daytime construction works during normal working days (i.e. any day not being

holiday between 0700 – 1900 hr) and erection of tower crane from 17th to 19th February 2003 (i.e. any day

between 2300 – 0700 hr of the next day) were carried out during the reporting period. During this

reporting period, four sets of Daytime measurements and one set of Night-time measurement were

carried out respectively.

Daytime noise measurement results of LAeq(30min) and Night-time noise measurement results of LAeq(5min)at

NM2 are summarized in Table 6.3a and 6.3b respectively below and shown in Appendix K of this Report.

The measurement results are also presented graphically in Appendix L. Details of the weather and other

influencing factors during the monitoring period are shown in Appendix K.

Table 6.3a - LAeq(30min) Measurement Results at NM2 in February 2003

Calculated Construction NoiseLAeq(30min), dB(A)1

Range of Measurements

Limit Level dB(A) No. of Exceedance

68.4-71.2 70 Three

Table 6.3b - LAeq(5min) Measurement Results at NM2 in February 2003

Calculated Construction NoiseLAeq(5min), dB(A)1

Range of Measurements

Limit Level dB(A) No. of Exceedance

53.9-56.5 40 Three(2)

Note:

1. Calculated construction noise is derived from the measured noise levels from the sound level meter and the

baseline noise data

2. The measurement exceedances occurred on the sampling day on 19th February 2003.





7. AUDIT RESULTS

7.1 Air Quality

The 1-hr. and 24-hr. TSP measurements at the air monitoring location AM1 were all below the

corresponding Action/Limit Levels.

7.2 Noise

For Daytime noise measurement (i.e. 0700 to 1900 hr Monday to Saturday exclude public holidays) in

terms of LAeq(30min), a total of five sets of measurement were carried out on 3rd ,9th , 15th , 21st and 27th

January 2003 during the reporting period and all measurement results were below the Limit Level (70

dB(A))..

For Night-time noise measurement (i.e. Any day 2300 – 0700 on the next day) in terms of LAeq(5min), a total

of one set comprising three consecutive 5-minute measurement was carried out on 16th January 2003 and

all measurement results exceeded the Limit Level (40 dB(A)). Based on the on-site observation made by

the sampling team during the measurement, the dominant noise source for elevated measurement result

was the traffic noise along Che Kung Miu Road. In view of this, the exceedance was not related to the

project activities.

7.3 Waste Management

Wastes from this Project include construction and demolition (C&D) waste, excavated materials,

chemical waste, asbestos waste, contaminated materials and general refuse. The EIA Study has

determined that with appropriate mitigation measures, impact from wastes would not become

unacceptable. The waste management issue covers the handling of C&D waste, excavated materials,

chemical waste, asbestos waste, contaminated materials and general refuse.

Based on the information provided by MAEDA according to the relevant handling records for the Waste

Management Plan of this project, the quantity and handling practices of different categories of waste are

summarized in Table 7.1.





Table 7.1 - Summary of Different Categories of Waste during the Reporting Period

Material Type QuantityProduced inReporting

Period

Handling Practices HandlingQuantitiesas of 28 th

February2003

Accumulatedhandling

Quantities as of28th February

2003

StorageLocations

(if applicable)

StorageQuantity as of28th February

2003

To be delivered to publicfilling barging point for thegovernment approvedpublic filling barging point(PFBP) at Kai Tak

0 m3 12030 m3 Area 6

To be reused at the site forfilling

10 m3 4105 m3 Area 6 & 8

Excavatedmaterials

0 m3

To be delivered and reusedat the Contractor's own

outlets, MTRC #603 – BackHill Tunnel

0m3 250 m3 --

10 m3

To be delivered to publicfilling barging point for thegovernment approvedpublic filling barging pointat Kai Tak

0 m3 1994 m3C&D waste(inert waste)

0 m3

To be recycled at site 0 m3 132 m3

Area 8 5 m3

5 m3 To be recycled at site 5 m3 492 m3 Area 8 2 m3

0.5 ton To be returned to supplier(steel bar)

0 ton 473.61 ton Area 8 0.5 tonC&D waste

(non-inert waste)

132 m3 Collected by licencedcollector for disposal

132 m3 4076 m3 Area 2, Area 1& Area 10

2 m3

Chemical waste 0 L To be collected by licencedwaste collector for disposal

0 L 2701 L ChemicalWaste StorageArea in Area 8

10.5 L

Asbestos waste Nil n.a. n.a. n.a. n.a. n.a.Contaminated

materialNil n.a. n.a. n.a. n.a. n.a.

2 ton Collected by licenced

collector for disposal

2 ton 169 ton Area 7 1 tonGeneral waste

0.2 tonTo be recycled or reused0.2 ton4.7 tonArea 8, site

office

0.1 ton

Note:

1. No asbestos waste and contaminated materials were identified at the site during the reporting period and

therefore no specific handling practices for the said wastes were carried out.

2. The transportation of the C&D waste, excavated materials, chemical waste and general waste were

arranged by trucks.





7.4 Site Inspection by ET

Site inspections conducted by the ET were carried out on 6th, 13th, 18th and 27th February 2003. The

following major observations were made by the ET:

l Accumulation of sediment was observed at the U-channel at Area 8 (6th, 13th, 18th and 27th February

2003) and Area 10 (6th and 13thFebruary 2003). MAEDA has arranged the clearance of sediment

accordingly.

l Stagnant water inside the desilting tank at Area 12 (18th February 2003), U-channel at Area 8 and

inside the super-structure at Area 1(27th February 2003) and which might be potential source for

mosquito breeding. MAEDA have arranged to remove the water accordingly.

MAEDA has carried out the said remedial measures accordingly for the said observations and they were

found effective for the improvement of the environmental performance of the construction site during

subsequent weekly inspection by ET.

7.5 Site Inspection by IEC

Site inspections conducted by the IEC was carried out on 19th February 2003 and the major comments

were as follows:

Non-compliances:

l Nil.

Observations:

l Accumulation of sediment was observed at the U-channel connected to Shing Mun River. MAEDA

has arranged the clearance of sediment accordingly

l Backoe emitting water smoke was observed. For this. MAEDA has removed the Backoe

accordingly.

The said follow-up action carried out by MAEDA was reviewed by ET during the subsequent site visit.

ET was in general satisfied with the effectiveness of the mitigation measures and the environment was

improving.





7.6 Site Inspection by EPD

Site inspection was conducted by EPD on 25th February 2003 and no particular comments were given

during the visit.

8. COMPLAINTS, NOTIFICATION OF SUMMONS AND SUCCESSFUL PROSECUTIONS

DURING THE REPORTING PERIOD

No complaints were received by the ER, the Contractor and ET during the reporting period.

The cumulative statistics on the notification of summons and successful prosecutions are shown in

Appendix S.





9. FUTURE KEY ISSUES

The tentative program of major site activities as well as the impact prediction and control measures for

the next three months are summarized in Table 9.1 as follows:

Table 9.1 Tentative Program of Major Site Activities for the Next Three Months

Construction Works Major ImpactPredication

Control Measures


l Noise impact l Schedule work time to avoid persistentnoisy operation



Earthworks at Area 6 l Generation of siltywastewater

l Gullies and the footing of hoardingswill be sealed to avoid untreatedwastewater drained into the existingdrainage system.

l Effluent will be diverted to thesedimentation tank (WetSep) at Area 8for proper treatment before discharge.





Construction of viaductacross Mei Tin Road




The tentative environmental monitoring schedule from March to May 2003 is shown in Appendix M .

10. COMMENTS, RECOMMENDATIONS AND CONCLUSIONS

The environmental monitoring results indicated that the operations of the site activities by the Contractor

during the reporting period were in general comply with the relevant environmental requirements except

on the implementation of mitigation measures as mentioned in the findings as shown in Section 7.4 and

7.5 of the Report.

kcrc east rail extension contract no. tcc-400 tai wai station

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