TABLE OF CONTENTS                                                                                                                                                          Page

 

Executive SUMMARY                                                                      

 

1.0

INTRODUCTION

1

2.0

PROJECT INFORMATION

 

 

2.1 Scope of the Project

1

 

2.2 Site Description

1

 

2.3 Work Programme

2

 

2.4 Project Organization and Management Structure

2

 

2.5 Contact Details of Key Personnel

2

3.0

Work progress in this reporting month

2

4.0

Air Quality Monitoring

 

 

4.1 Monitoring Requirement

2

 

4.2 Monitoring Equipment

2

 

4.3 Monitoring Parameters, Frequency and Duration

2

 

4.4 Monitoring Locations and Schedule

3

 

4.5 Monitoring Methodology

3

 

4.6 Action and Limit levels

4

 

4.7 Event-Action Plans

4

 

4.8 Results and Observation

4

5.0

Noise Monitoring

 

 

5.1 Monitoring Requirements

4

 

5.2 Monitoring Equipment

4 – 5

 

5.3 Monitoring Parameters, Duration and Frequency

5

 

5.4 Monitoring Locations and Month

5

 

5.5 Monitoring Procedures and Calibration Details

5

 

5.6 Action and Limit levels

5

 

5.7 Event-Action Plans

6

 

5.8 Results and Observation

6

6.0

Marine water quality monitoring

 

 

6.1 Monitoring Requirements

6

 

6.2 Monitoring Locations

6

 

6.3 Monitoring Parameters

6

 

6.4 Monitoring Frequency

7

 

6.5 Monitoring Methodology and Equipment Used

7 - 8

 

6.6 Action and Limit Level

9

 

6.7 Event and Action Plan

9

 

6.8 Monitoring Duration and Month in this reporting month

9

 

6.9 Marine Water Monitoring Results

9

7.0

Environmental Audit

 

 

7.1 Weekly ET Site Inspections

10

 

7.2 Review of Environmental Monitoring Procedures

10

 

7.3 Assessment of Environmental Monitoring Results

10

 

7.4 Advice on the Solid and Liquid Waste Management Status

11

8.0

Status of environmental licensing and permitting

11 – 12  

9.0

Environmenatl non-conformance

 

 

9.1 Summary of air quality, noise and marine water quality

12

 

9.2 Summary of Environmental Complaints

12

 

9.3 Summary of Notification of Summons and Prosecution

12

10.0

Implementation Status

 

 

10.1 Implementation Status of Environmental Mitigation Measures

12

 

10.2 Implementation Status of Event and Action Plan

12

 

10.3 Implementation Status of Environmental Complaint, Notifications of Summons and Successful Prosecutions Handling

12

11.0

Conclusion and Recommentations

13 – 14   

12.0

Future key issue

 

 

12.1 Work Programme for the Coming Month

14

 

12.2 Key Issues for the Coming Month

14 – 15  

 

12.3 Monitoring Schedule for the Coming Month

15

 


 

 

 

APPENDIX I

A

Organization Chart and Lines of Communication

B1

Calibration Certificates for Impact Air Quality Monitoring Equipment

B2

Impact Air Quality Monitoring Results

B3

Graphical Plots of Impact Air Quality Monitoring Data

C1

Calibration Certificates for Impact Noise Monitoring Equipment

C2

Impact Noise Monitoring Results

C3

Graphical Plots of Impact Noise Monitoring Data

D1

Calibration Certificates for Impact Marine Water Quality Monitoring Equipment

D2

Impact Marine Water Quality Monitoring Results

D3

Graphical Plots of Impact Marine Water Quality Monitoring Data

E

Weather Condition

F

Event-Action Plans

G

Work Programme

H

Weekly ET’s Site Inspection Record

I

Implementation Schedule of Mitigation Measures

J

Site General Layout Plan

K

Monitoring Schedule for the Coming Month

L

Complaint Log

 

 

 

APPENDIX I

 

Figures

 

Figure 1

Locations of Water Quality Monitoring Stations – Tseung Kwan O Area 137 Fill Bank

Figure 2

Location of Noise Quality Monitoring Station – Tseung Kwan O Area 137 Fill Bank

Figure 3

Locations of Air Quality Monitoring Stations – Tseung Kwan O Area 137 Fill Bank

 

 

 

APPENDIX II

Marine Water Quality Monitoring Report for Contract No. HY/2010/02 Hong Kong – Zhuhai – Macao Bridge, Hong Kong Boundary Crossing Facilities – Reclamation Works

 

 

 

Tables

 

2.1

Contact Details of Key Personnel

4.1

Air Quality Monitoring Equipment

4.2

Monitoring parameters, duration and frequency of air quality monitoring

4.3

Air Quality Monitoring Locations

4.4

Action and Limit levels for 24-hr TSP and 1-hr TSP

5.1

Noise Monitoring Equipment

5.2

Duration, Frequency and Parameters of noise monitoring

5.3

Noise Monitoring Location

5.4

Action and Limit levels for noise monitoring

6.1

Locations of Marine Water Monitoring Stations

6.2

Marine Water Quality Monitoring Parameters

6.3

Monitoring frequency of the marine water

6.4

Summary of testing procedures

6.5

Details of Marine Water Quality Monitoring Equipment (In-site measurement)

6.6

Water Quality Action and Limit Levels

6.7

Time Schedule of Impact Marine Water Quality Monitoring

6.8

Summary of Impact Marine Water Quality Exceedances in this reporting month

7.1

Key Findings of Weekly ET Site Audits in this reporting month

7.2

Actual amounts of Waste generated in this reporting month

8.1

Summary of environmental licensing and permit status

10.1

Summary of Environmental Complaints and Prosecutions


 

 

Executive SUMMARY

 

 

This monthly Environmental Monitoring and Audit (EM&A) report No.2 was prepared by ETS-Testconsult Ltd (ET) for the “Contract No: CV/2013/06 Handling of Surplus Public Fill (2014-2016) – Tseung Kwan O (TKO) Area 137 Fill Bank” (The Project).

This report documented the findings of EM&A Works conducted during the operation phase of Fill Bank at TKO Area 137 in February 2014.

 

Site Activities

 

As informed by the Contractor, the site activities in this reporting month were as below:

·           Unloading fill material at tipping hall;

·           Transferring fill material to stockpile area and BCF’

·           Construction of Contractor’s and Engineer’s site office; and

·           Unloading fill material from derrick barge with mechanical claw.

 

Environmental Monitoring Progress

 

The summary of the monitoring activities in this monitoring month is listed below:

 

·            Noise Monitoring (Day-time): 1 Occasion at 1 designated location

·            24-hour TSP Monitoring: 5 Occasions at 2 designated locations

·            1-hour TSP Monitoring: 13 Occasions at 2 designated locations

·            Marine Water Quality Monitoring: 11 Occasions at 2 designated locations

·            Weekly-site inspection: 4 Occasions

 

Noise Monitoring

 

No exceedance of Action and Limit levels for noise monitoring was recorded in the reporting month.

 

Air Monitoring

 

No exceedance of Action and Limit levels was recorded for 1-hr and 24-hr TSP monitoring in the reporting month.

 

Marine Water Quality Monitoring

 

According to the summary of marine water monitoring results, no exceedance of Action and Limit levels was recorded in this reporting month.

 

Weekly Site Inspections

 

In general, performance on environmental mitigation measures implemented was found to be satisfactory in this reporting month. The major findings observed during site inspections are presented in the Section 7.0.

 

Environmental Complaints, Notification of summons and successful prosecutions

 

No complaint, notification of summons or successful prosecutions with respect to environmental issues was received in this reporting month.

 

Future Key Issues

 

Based on site inspections and forecast of engineering works in coming month, key issues to be considered are as follows:

·            Noise and air quality impact due to site works;

·            Maintain wheel washing facilities properly;

·            Maintain all drainage and desilting facilities properly;

·            Use and maintain silt curtain properly;

·            Clean up the fill material on concrete pavement along the BHA frequently;

·            Sufficient drip trays for all oil drums / chemical containers;

·            Implement all necessary preventive measures to avoid oil leakage. In the event an oil leakage happens, the Contractor should properly remove the leaked oil and handle the contaminated soil and all materials using for this cleaning works as chemical waste;

·            Maintain good site practice and waste management to minimize environmental impacts at the site; and

·            Follow-up improvements on waste management issues.

 


 

1.0          INTRODUCTION

 

HKPFH Joint Venture (HKPFH-JV) appointed Environmental Team (ET) of ETS-Testconsult Limited (ETL) to undertake the Environmental Monitoring and Audit (EM&A) for the Contract No: CV/2013/06Handling of Surplus Public Fill (2014-2016) – Tseung Kwan O (TKO) Area 137 Fill Bank” (The Project).

 

In accordance with the Environmental Permit (No.: EP-134/2002/K) (the EP), an EM&A programme should be implemented in accordance with the procedures and requirements in the EM&A Manual of the approved EIA report (Registration No. AEIAR-060/2002). The EM&A programme for this study as stated in Section 2.3.1 of the EM&A Manual covers the following environmental aspects during the establishment, operation and removal phases of the Fill Bank at Tseung Kwan O Area 137:

 

§  Fugitive Dust;

§  Noise generation from onsite activities;

§  Water Quality; and

§  Landscape and Visual.

 

The EM&A programme requires environmental monitoring for air quality, noise and water quality and environmental site inspections for air quality, noise, water quality, landscape and visual, and waste management. The EM&A requirements for each parameter described in the following sections include:

 

§   All monitoring parameters;

§   Monitoring schedules for the reporting month and forthcoming months;

§   Action and Limit levels for all environmental parameters;

§   Event/Action Plans;

§   Environmental mitigation measures, as recommended in the Project EIA study final report; and

§   Environmental requirements in contract documents.

 

Baseline monitoring was completed in August and September 2002 by MateriaLab. Action and Limit Levels were established for air and water quality parameters based on the baseline monitoring results.

 

This report documented the findings of EM&A Works conducted during the operation phase of Fill Bank at Tseung Kwan O Area 137 in February 2014.

 

 

2.0          PROJECT INFORMATION

 

2.1          Scope of the Project

 

The scale and scope of the Project as stated in the EP include:

§  Site clearance;

§  Construction of a temporary storm water system;

§  Stockpiling of 6 million m3 of public fill;

§  Setting up two barging points: one at the TKO Basin and one at the Construction and Demolition Material Sorting Facility (C&DMSF) for transporting the stockpiled public fill by barges;

§  Setting up a temporary barging point at the existing Explosive Off-loading Barging Point located in the south-eastern part of Area 137 for the month of May 2004 to December 2004 for transporting the stockpiled public fill by barge;

§  Construction and operation of a Construction and Demolition Material Sorting Facility (C&DMSF);

§  Setting up a Construction and Demolition Material Crushing Facility at the TKO Basin; and

§  Remove the temporary fill bank.

 

2.2          Site Description

 

TKO Area 137 Fill Bank is located at the southern end of Wan Po Road. In the vicinity of the site are other industrial uses such as SENT landfill, TKO Industrial Estate, etc. Both Island Resort and Fullview Garden are also situated at more than 1.8km from the site. Other existing ASRs and NSRs, including resident developments and schools, are located at a further distance away from TKO Area 137.


 

2.3          Work Programme

 

Details of work programme are shown in Appendix I G.

 

2.4       Project Organization and Management Structure

 

The project organization chart is shown in Appendix I A.

 

2.5       Contact Details of Key Personnel

 

The key personnel contact names and telephone numbers are shown in Table 2.1.

 

Table 2.1           Contact Details of Key Personnel

Organization

Name of Key Staff

Project Role

Tel. No.

Fax No.

CEDD

Mr. P C Mok

Mr. K C Wong

Mr. C T Chock

Mr. Y F Kwong

Engineer’s Representative

2762 5514

2714 0113

IEC (ENVIRON)

Mr Tony Cheng

IEC

3465 2888

3465 2899

Contractor (HKPFH-JV)

Mr. K W Li

Project Manager

9750 6438

2744 6937

ET (ETL)

Mr C. L. Lau

ET Leader

2946 7791

2695 3944

 

3.0       Work Progress in this reporting month

 

As informed by the Contractor, the activities in the reporting month include:

·       Unloading fill material at tipping hall;

·       Transferring fill material to stockpile area and BCF’

·       Construction of Contractor’s and Engineer’s site office; and

·       Unloading fill material from derrick barge with mechanical claw.

 

 

4.0          AIR QUALITY MONITORING

 

4.1        Monitoring Requirement

 

TSP levels were monitored in the reporting month in accordance with the EM&A Manual. Table 4.4 shows the Action and Limit Levels for the environmental monitoring works.

 

4.2        Monitoring Equipment

 

Both 1-hour and 24-hour TSP air quality monitoring was performed using a GMWS2310 High Volume Air Sampler (HVS) located at each of the designated monitoring station. Table 4.1 summarizes the equipment used in the air quality monitoring programme. A copy of the calibration certificates for the HVS and calibrator are attached in Appendix I B1.

 

Table 4.1           Air Quality Monitoring Equipment

Equipment

Model and Make

HVS

Greasby GMWS2310

Calibrator

Tisch TE-5025A

 

4.3        Monitoring Parameters, Frequency and Duration

 

Table 4.2 summarizes the monitoring parameters, monitoring duration and frequencies of air quality monitoring.

 

            Table 4.2           Monitoring parameters, duration, frequency of air quality monitoring

Parameter

Duration

Frequency

24-hr TSP

24 hr

Once every six days

1-hr TSP

1 hr

Three times per day every six days


 

4.4        Monitoring Locations

 

Table 4.3 tabulates the air quality monitoring locations of this project.

 

Table 4.3           Air quality monitoring locations

Monitoring station

Location

TKO-A1

Site Egress

TKO-A2a

CREO

 

4.5        Monitoring Methodology

 

Both 1-hr and 24-hr air quality monitoring (High Volume Sampler)

 

Instrumentation

 

High volume sampler, as HVS, (Greasby GMWS2310) complete with appropriate sampling inlets were employed for both 1-hour and 24-hour TSP monitoring. The sampler is composed of a motor, a filter holder, a flow controller and a sampling inlet and its performance specification complies with that required by USEPA standard Title 40, Code of Federation Regulations Chapter 1 (Part 50).

 

Installation

 

The installation of HVS refers to the requirement stated in EM&A Manual.

 

Operation/Analytical Procedures

 

Operating/analytical procedures for the operation of HVS are as below:

 

·          Prior to the commencement of the dust sampling, the flow rate of the high volume sampler was properly set (between 0.6m3/min and 1.7m3/min.) in accordance with the manufacturer’s instruction to within the range recommended in USEPA Standard Title 40, CFR Part 50. The flow rate was indicated on the flow rate chart.

·          For TSP sampling, fiberglass filters (GA-55) were used.

·          The power supply was checked to ensure the sampler worked properly.

·          On sampling, the sampler was operated 5 minutes to establish thermal equilibrium before placing any filter media at designated air monitoring station.

·          The filter holding frame was then removed by loosening the four nuts and carefully a weighted and conditioned filter was centered with the stamped number upwards, on a supporting screen.

·          The filter was aligned on the screen so that the gasket formed an air-tight seal on the outer edges of the filter.  Then the filter holder frame was tightened to the filter holder with swing bolts. The applied pressure should be sufficient to avoid air leakage at the edges.

·         The programmable timer will be set for a sampling month of 1 hour or 24 hours.  Information was recorded on the record sheet, which included the starting time, the weather condition and the filter number (the initial weight of the filter paper can be found out by using the filter number.).

·         After sampling, the filter was transferred from the filter holder of the HVS to a sealed plastic bag and sent to the laboratory for weighting.  The elapsed time was also recoded.

·         Before weighting, all filters were equilibrated in a desiccator for 24 hour with the temperature of 25oC + 3oC and the relative humidity (RH) <50% +5%.

·         All measurement procedures in Section 2.3 of the EM&A Manual were followed during the reporting month.

 

Maintenance & Calibration

 

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

·          HVS should be calibrated at bi-monthly intervals.

 

Wind Data Monitoring

 

Wind data (wind speed and wind direction) were directly extracted from Tseung Kwan O Station of Hong Kong Observatory. All wind data during this reporting month are shown in Appendix I E.


 

4.6        Action and Limit Levels

 

Table 4.4 shows the Action and Limit levels for 24-hr TSP and 1-hr TSP monitoring.

 

Table 4.4           Action and Limit Levels for 24-hr TSP and 1-hr TSP

Monitoring Location

24-hr TSP (mg/m3)

1-hr TSP (mg/m3)

Action Level

Limit Level

Action Level

Limit Level

TKO-A1

210

260

376

500

TKO-A2a *

210

260

376

500

Remark (*): Since dust monitoring stations TKO-A2 and TKO-A2a are located close to the major dust emission sources and also close to the same sensitive receptor and no significant difference between them on the prevailing meteorological conditions, the baseline data from TKO-A2 (August and September 2002 by MateriaLab) can also be valid in the case of TKO-A2a.

 

4.7        Event-Action Plans

 

Please refer to Appendix I F for details. 

 

4.8        Results and Observation

 

4.8.1     1-hour and 24-hour TSP Monitoring results

 

Monitoring data of both 1-hour and 24-hour TSP monitoring carried out in this reporting month are summarized in Appendix I B2. Graphical presentation of 1-hour and 24-hour TSP monitoring results for the reporting month is shown in Appendix I B3. Wind data included wind speed and wind direction was extracted from Tseung Kwan O Station of Hong Kong Observatory during this reporting month and is presented in Appendix I E.

 

No exceedance of Action and Limit Level of 1-hr TSP and 24-hour TSP monitoring results was recorded during the reporting month.

 

4.8.2     Observation

 

Generally, the Contractor implemented sufficient dust mitigation measures, including operation of the mist spraying systems at the CEDD Combined Reception Office and the site egress area, wheel washing facilities, road dampening by water bowsers and automatic water sprinklers on the main haul roads. Furthermore, hydroseeded slopes on the stockpiling areas was maintained properly in order to prevent dust generation from wind erosion of the exposed surfaces. Other dust sources near TKO Area 137 also included operation of the temporary CWSF and dumping activities at the SENT Landfill.

 

 

5.0       Noise Monitoring

 

5.1       Monitoring Requirements

 

Noise monitoring was conducted at 1 monitoring station as specified in the approved EM&A Monitoring Proposal for good site practice. The equipment, parameter, frequency, duration, methodology, calibration details, results and observations of the noise monitoring for the reporting month are presented in this section.

 

5.2        Monitoring Equipment

 

An Integrating Sound Level Meter was used for noise monitoring. It was a Type 1 sound level meter capable of giving a continuous readout of the noise level reading including equivalent continuous sound pressure level (Leq) and percentile sound pressure level (Lx). It complies with International Electro Technical Commission Publications 651:1979 (Type1) and 804:1985 (Type1), and speed in m/s was used to monitor the wind speed.

 

Table 5.1 summarizes noise monitoring equipment model being used. A copy of the calibration certificate for noise meter and calibrator are attached in Appendix I C1.


 

Table 5.1           Noise Monitoring Equipment

Equipment

Model

Sound Level Meter

Rion NL-31 / Rion NL-52

Sound Level Calibrator

Rion NC-73 / Castle GA607

 

5.3        Monitoring Parameters, Duration and Frequency

 

Duration, frequencies and parameters of noise measurement are presented in Table 5.2.

 

Table 5.2           Duration, Frequencies and Parameters of Noise Monitoring

Time month

Duration/min

Parameters

Frequency

Day-time: 0700-1900 hrs on normal weekday

30

Leq, L10, L90

Once per month

 

5.4       Monitoring Locations

 

One Noise monitoring was conducted at the noise monitoring location, TKO-N1 as shown in Figure 2 during the reporting month. Table 5.3 describes the location of the monitoring station.

 

Table 5.3           Noise Monitoring Location

Monitoring station

Location

Type of Measurement

TKO-N1

Outside site Egress along Wan Po Road

Free Field

 

5.5        Monitoring Procedures and Calibration Details

 

Operation/Analysis Procedures

 

·         The Sound Level Meter was set on a tripod at a height of 1.2m above the ground.

·         For free field measurement, the meter was positioned away from any nearby reflective surfaces. 

·         The battery condition was checked to ensure the correct functioning of the meter.

·         Parameters such as frequency weighting, the time weighting and the measurement time were set as follows:

-          Frequency weighting:  A

-          Time weighting         :  Fast

-          Time measurement  :  30 mins

·         Prior to and after each noise measurement, the meter was calibrated using a Calibrator for 94 dB at 1000HZ.  If the difference in the calibration level before and after measurement was more than 1dB(A), the measurement would be considered invalid and repeat measurement would be required after re-calibration or repair of the equipment.

·         The wind speed was frequently checked with a portable wind meter.

·         During the monitoring month, the Leq, L10 and L90 were recorded.  In addition, site conditions and noise sources were recorded on a standard record sheet.

·         Correction factor of +3dB(A) should be made to the free Field measurements.

·         Noise monitoring would be cancelled in the presence of fog, rain, wind with a steady speed exceeding 5m/s, or wind gusts exceeding 10m/s.

 

Maintenance and Calibration

 

·         The microphone head of the sound level meter and calibrator are cleaned with soft cloth in quarterly intervals.

·         The meter is sent to the supplier or HOKLAS laboratory to check and calibrated in yearly intervals.

 

5.6        Action and Limit Levels

 

The Action and Limit levels for noise levels derived as illustrated in Table 5.4.

 

Table 5.4           Action and Limit Levels for noise monitoring

Time Month

Time Month

Action

Limit

Normal hours

0700-1900 hrs

on normal weekdays

When one documented complaint is received

75 dB(A)


 

5.7        Event-Action Plans

 

Please refer to the Appendix I F for details. 

 

5.8          Results and Observation

 

5.8.1     Results

 

Only Day-time noise monitoring was carried out at monitoring station TKO-N1 in this reporting month. The detail of the noise monitoring is provided in Appendix I C2. Graphical presentation of the monitoring result for the reporting month is shown in Appendix I C3.

Since no documented complaints on noise issue were received in this reporting month, no Action Level exceedances were recorded. Besides, no exceedances in Limit Level were recorded according to the result from Day-time monitoring.

 

5.8.2       Observation

 

The major noise source during the monitoring event was the dump truck traffic. Operation of the Fill Bank was from 08:00 to 21:00 from Monday to Sunday in the reporting month. Whereas the operation hours for barge activities in the TKO Basin was from 08:00 to 21:00. The monitoring result complied with the noise limit of 75dB(A).

 

 

6.0          MARINE WATER QUALITY MONITORING

 

6.1       Monitoring Requirements

 

In accordance with the EM&A Manual, impact marine water quality monitoring was conducted three days per week. Measurements were taken at both mid-flood and mid-ebb tides at three depths (i.e. 1m below surface, mid depth and 1m from seabed) at Control Station, C1 and Monitoring Station, M4.

 

6.2        Monitoring Locations

 

For the Reclamation Project, there were 4 Designated Monitoring Stations and 2 Designated Control Stations specified in the EM&A Manual. Upon the completion of the monitoring programme under Stage 2 reclamation works, the ET started monitoring events at the impact station M4 and the control station C1 from 18 May 2004 onwards. Figure 1 shows the location of the marine water quality monitoring stations. Table 6.1 describes the locations of the monitoring stations in the reporting month.

 

Table 6.1           Locations of Marine Water Monitoring Stations

Station Description

Code

HK Metric Grid E

HK Metric Grid N

Control Station (Ebb tide)

TKO-C1

844 740.208

815 371.502

Monitoring Station, Tung Lung Chau Fish Culture Zone

TKO-M4

847 741.029

812 977.878

 

6.3        Monitoring Parameters

 

Monitoring of the marine water quality parameters are listed in Table 6.2.

 

Table 6.2           Marine Water Quality Monitoring Parameters

In-situ measurement

Laboratory analysis

Depth (m)

Suspended solids (mg/L)

Temperature (°C)

Dissolved Oxygen (mg/L and % saturation)

Turbidity (NTU)

Salinity (ppt)

 


 

6.4          Monitoring Frequency

 

The monitoring frequency of the marine water monitoring is summarized in Table 6.3.

 

Table 6.3           Monitoring frequency of the marine water

Parameter

Frequency

No. of Location

No. of Depths

Temperature

3 days/week,

2 tides/day

2

(TKO-C1 and TKO-M4)

3

(Surface, mid-depth & bottom)

Salinity

DO

Turbidity

Suspended solids

 

6.5          Monitoring Methodology and Equipment Used

 

For Location of the monitoring stations

 

Global Positing System (GPS)

A hand-held digital GPS was used to identify the designated monitoring stations prior to water sampling.

 

For Water Depth measurement

 

Echo Sounder

A portable, battery-operated echo sounder was used for the determination of water depth at each designated monitoring station.

 

For In-situ Water Quality Measurement

 

All in-situ monitoring instruments were checked, calibrated and certified by a laboratory accredited under HOKLAS or any other international accreditation scheme before use, and subsequently re-calibrated at 3 monthly intervals or sometimes longer throughout all stages of the water quality monitoring.

 

Dissolved Oxygen, Salinity and Temperature Measuring Equipment

A portable, weatherproof dissolved oxygen & salinity measuring instrument, which complete with cable, sensor and DC power source (e.g. YSI 85 or equivalent) was used for measuring:

·       a dissolved oxygen level in the range of 0-20 mg/L and 0-200 % saturation;

·       a salinity in range 0-40 ppt; and

·       a temperature of 0-45 degree Celsius

 

A membrane electrode with automatic temperature compensation complete with a cable was installed.

 

Turbidity Measurement Instrument

A portable and weatherproof turbidity meter (HACH model 2100Q) was used during impact monitoring. It has a photoelectric sensor capable of measuring turbidity between 0-1000 NTU. Response of the sensor was checked with certified standard Turbidity solutions before the start of measurement.

 

For Water Sampling and Sample Analysis

 

In-situ monitoring was carried out at three depths: 1 meter below water surface, at mid-depth and 1 meter above the seabed. If the water depth is less than 6 m, the mid-depth station shall be omitted and if the water depth is below 3 m, only the mid depth station shall be monitored.

 

Water Sampler

A water sampler comprising a transparent PVC cylinder, with a capacity of not less than 2 liters, was lowered into the water body at the predetermined depth. The both opening ends of the sampler were then closed accordingly by dead weight and water samples were collected.


 

Water Container

The sample container, made by high-density polythene, was rinsed with a portion of the water sample. The water sample was then transferred to the container, labelled with a unique sample ID and sealed with a screw cap. The water samples were stored in a cool box maintained at 4oC. The water samples were then delivered to a local HOKLAS-accredited laboratory (Environmental Laboratory, ETS-Testconsult Ltd, HOKLAS Registration No. 022) on the same day for analysis.

 

The summary of testing method of testing parameter as recommended by EIA or required by EPD, with the QA/QC results in accordance with the requirement of HOKLAS or international accredited scheme is shown in Table 6.4.

 

Table 6.4           Summary of testing procedures

Laboratory Analysis

Testing Procedure

Detection Limit

Total suspended solids

In house method based on APHA 19th ed 2540D

1.0 mg/L

 

In-situ measurement

 

All in-situ monitoring instruments were checked, calibrated and certified by a laboratory accredited under HOKLAS or any other international accreditation scheme before use. Responses of sensors and electrodes were checked with certified standard solutions before each use. Wet bulb calibration for a DO meter was carried out before the start of measurement.

 

At each measurement/sampling depth, two consecutive measurements of dissolved oxygen (DO), dissolved oxygen saturation (DOS), turbidity and salinity were taken. For turbidity measurement, the sample was collected by using sampler and then transferred to the cell. The reading of turbidity of the sample was directly recorded from the Turbidimeter (HACH 2100Q) after inserting the cell to the Turbidimeter. For DO, DOS and Salinity, duplicate measurements were performed by dropping the calibrated probes of the corresponding monitoring equipments to the designated depths of the water column and taking readings after stabilized. The duplicate measurements were averaged if the difference was not greater than 25%. If the difference is greater than 25%, repeat measurement will be required.

 

Table 6.5 shows the equipment used for in-situ monitoring of water quality. The calibration certificates are attached in Appendix I D1.

 

Table 6.5           Details of Marine Water Quality Monitoring Equipment (In-site measurement)

Parameter

Model

Date of Calibration

Due Date

Equipment No.

Coordinate of Monitoring stations

Garmin eTrex 10

-----

-----

ET/EW/005/04

Dissolved Oxygen (Saturation), Temperature, Salinity

YSI Dissolved Oxygen, Salinity & Temperature Meter, YSI Pro2030

29/01/14

28/04/14

ET/EW/008/004 *

Turbidity

HACH Model 2100Q Turbid Meter

07/01/14

06/04/14

ET/0505/010 *

Water Depth

Speedtech SM-5

-----

-----

ET/EW/002/06

Remark:(*) indicates the instrument should be calibrated on use.


 

6.6        Action and Limit Level

 

The water quality criteria, namely Action and Limit (A/L) levels are presented in the table below.

 

Table 6.6           Water Quality Action and Limit Levels

Parameter

Action Level

Limit Level

DO (mg/L)

Surface & Middle

<5.45 mg/L (5%-ile of baseline data)

Bottom

<4.72 mg/L (5%-ile of baseline data)

Surface & Middle

<5.10 mg/L (1%-ile of baseline data)

Bottom

<2.00 mg/L

SS (mg/L)

(Depth-averaged)

>6.74 mg/L (95%-ile of baseline data) or >120% of the upstream control station’s SS at the same tide on the same day

>7.67 mg/L (99%-ile of baseline data) or >130% of the upstream control station’s SS at the same tide on the same day

Turbidity (NTU)

(Depth-averaged)

>4.28 NTU (95%-ile of baseline data) or

>120% of the upstream control station’s turbidity at the same tide on the same day

>4.58 NTU (99%-ile of baseline data) or

>130% of the upstream control station’s turbidity at the same tide on the same day

 

6.7          Event and Action Plan

 

Please refer to the Appendix I F for details. 

 

6.8          Monitoring Duration and Month in this reporting month

 

Below is the time schedule for the marine water quality monitoring events that were conducted in this reporting month:

 

Table 6.7       Time Schedule of Impact Marine Water Quality Monitoring

February 2014

Sunday

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

 

 

 

 

 

 

1

 

2

 

3

 

4

 

5

6

 

7

8

 

9

 

10

11

 

12

13

 

14

15

 

16

 

17

18

 

19

20

 

21

22

 

23

 

24

25

 

26

27

 

28

 

 

Remarks:   ( ) = Marine water quality monitoring carried out by ET.

 

The daily marine water quality monitoring duration are detailed in Appendix I D2.

 

6.9          Marine Water Quality Monitoring Results

 

The impact water quality measurement results are detailed in Appendix I D2. Appendix I D3 presents the water quality monitoring data and graphical presentations of monitoring results respectively.

 

The summary of marine water quality exceedances is shown in Table 6.8.

 

Table 6.8          Summary of Impact Marine Water Quality Exceedances in this reporting month

Station

Exceedance Level

DO

Turbidity

SS

Total

Flood

Ebb

Flood

Ebb

Flood

Ebb

Flood

Ebb

TKO-C1

Action

0

0

0

0

0

0

0

0

Limit

0

0

0

0

0

0

0

0

TKO-M4

Action

0

0

0

0

0

0

0

0

Limit

0

0

0

0

0

0

0

0

 

According to the summary of marine water monitoring results, no exceedance of Action and limit levels was recorded for this reporting month.


 

7.0          environmental Audit

 

7.1       Weekly ET Site Inspections

 

Weekly ET site inspections were carried out by ET to monitor the timely implementation of proper environmental pollution control and mitigation measures for the Project. In this reporting month, four weekly site inspections were conducted (05, 12, 19 and 26 February 2014).Table 7.1 presents the key findings of weekly ET site audit in this reporting month.

 

Table 7.1             Key Findings of Weekly ET Site Audits in this reporting month

Date

Key Findings

Action(s) Taken recommended by ET

Action(s) Taken by the Contractor during the ET weekly site audit

Rectification Status by ET

05 February 2014

C&D wastes, such as paper, plastic bag and wood, were discarded near site entrance. (Previous item)

To collect and dispose of the waste properly.

C&D waste, such as paper, plastic bag and wood, discarded near site entrance were collected.

Closed

Haul road to wet soil disposition area was found dry. (Previous item)

To water the haul road frequently especially during dry season.

Haul road to wet soil disposition area was found wet and no dust emission was observed.

Closed

No Environmental Permit was displayed at the site entrance. (New item)

To display valid Environmental Permit at the site entrance and vehicular entrance for public information.

---

Follow-up

Two empty oil buckets were discarded on the ground near a container at dry soil disposition area. (New item)

To collect and dispose of or store the oil buckets at appropriate area, such as chemical waste storage area, properly.

---

Follow-up

12 February 2014

No Environmental Permit was displayed at the site entrance. (Previous item)

To display valid Environmental Permit at the site entrance and vehicular entrance for public information.

---

Follow-up

Two empty oil buckets were discarded on the ground near a container at dry soil disposition area. (Previous item)

To collect and dispose of or store the oil buckets at appropriate area, such as chemical waste storage area, properly.

The empty oil buckets on the ground near a container at dry soil deposition area were covered properly.

Closed

Oil leakage was observed from a generator at RE site office. (New item)

To clean up the leaked oil and treat the contaminated materials as chemical waste.

---

Follow-up

Stagnant water was noted inside the drip tray for a generator located at car park at RE site office. (New item)

To drain the stagnant water out or apply pesticide to avoid mosquito breeding. Besides, skirt curtain should be provided.

---

Follow-up

Oil stain was observed from a generator at Chun Wo site office. (New item)

To clean up the oil stain and treat the contaminated materials as chemical waste.

---

Follow-up

19 February 2014

Oil leakage was observed from a generator at RE site office. (Previous item)

To clean up the leaked oil and treat the contaminated materials as chemical waste.

Environmental Permit was displayed at the site entrance.

Closed

Stagnant water was noted inside the drip tray for a generator located at car park at RE site office. (Previous item)

To drain the stagnant water out or apply pesticide to avoid mosquito breeding. Besides, skirt curtain should be provided.

The leaked oil observed from a generator at RE site office was cleared properly.

Closed

 

Date

Key Findings

Action(s) Taken recommended by ET

Action(s) Taken by the Contractor during the ET weekly site audit

Rectification Status by ET

19 February 2014

Oil stain was observed from a generator at Chun Wo site office. (Previous item)

To clean up the oil stain and treat the contaminated materials as chemical waste.

No stagnant water was noted inside the drip tray for a generator located at car park at RE site office and skirt curtain was provided to cover the generator properly.

Closed

Follow up action to item 5 on 12/02/14, oil stain was still observed from a generator at Chun Wo site office. (New item)

To clean up the oil stain and treat the contaminated materials as chemical waste.

---

Follow-up

Oil drums placed at Chun Wo site office was found covered improperly and stagnant water was observed inside the drip tray. (New item)

To drain the stagnant water inside the drip tray out and cover the oil drums properly.

---

Follow-up

Oil drums placed at CEDD site office was found covered improperly and stagnant water was observed inside the drip tray. (New item)

To drain the stagnant water inside the drip tray out and cover the oil drums properly.

---

Follow-up

26 February 2014

Follow up action to item 5 on 12/02/14, oil stain was still observed from a generator at Chun Wo site office. (Previous item)

To clean up the oil stain and treat the contaminated materials as chemical waste.

The generator at Chun Wo site office was removed and no oil stain was observed from a generator at Chun Wo site office.

Closed

Oil drums placed at Chun Wo site office was found covered improperly and stagnant water was observed inside the drip tray. (Previous item)

To drain the stagnant water inside the drip tray out and cover the oil drums properly.

Oil drums placed at Chun Wo site office was removed.

Closed

Oil drums placed at CEDD site office was found covered improperly and stagnant water was observed inside the drip tray. (Previous item)

To drain the stagnant water inside the drip tray out and cover the oil drums properly.

Oil drums placed at CEDD site office was removed.

Closed

No skirt curtain was provided for the generator near tipping hall No.2. (New item)

To provide suitable skirt curtain for all generator.

---

Follow-up

 

7.2       Review of Environmental Monitoring Procedures

 

The monitoring works conducted by the Environmental Team were inspected regularly. The observations for the monitoring works were recorded and summarized as follows:

 

Air Quality Monitoring

§  The monitoring team recorded the observations around the monitoring stations within and outside of the site.

§  The monitoring team recorded the temperature, air pressure and general weather condition on the monitoring day.

 

Noise Monitoring

§  The monitoring team recorded the observations around the monitoring station, which might affect the results.

§  Major noise sources were identified and recorded.

 

Water Quality Monitoring

§  The monitoring team recorded the observations around the monitoring stations, which might affect the results.

 

7.3          Assessment of Environmental Monitoring Results

 

All monitoring results were audited against the Action and Limit levels and any exceedance would be validated.

 

No exceedance was recorded in water quality, air quality and noise monitoring in this month.

 

The monitoring results in this reporting month were comparable with those of baseline month.  Detailed discussions were given in Section 4, 5 and 6 of this Report.

 

7.4          Advice on the Solid and Liquid Waste Management Status

 

The Contractor usually disposed of non-inert waste, including general refuse and materials segregated from the existing stockpiles, to SENT landfill. Table 7.2 summarizes data on offsite waste disposal in this reporting month.

 

Table 7.2          Actual amounts of Waste generated in this reporting month

Waste Type

Actual Amount

Disposal Locations

Public Fill (m3)

0

TKO 137 Fill Bank

C&D Waste (general refuse) (kg)

93500

SENT Landfill

Chemical Waste (kg/L)

0

Collected by licensed collector

 

The Contractor should provide sufficient preventive measures during equipment maintenance works so as to avoid oil leakage on the ground. In the event of any oil leakage, the Contractor should clean up the polluted soil and handle all the materials used for this cleaning works as chemical waste.

 

Concrete bunding has erected outside the CEDD combined reception office and near the automatic wheel washing facilities for storing generator sets and oil drums. The drain outlet of all the bunded areas should be plugged properly. Besides, pre-cast drip trays were provided for oil drums at several areas, such as workshop and chemical storage area. The Contractor should collect and dispose of any stagnant water accumulated in the concrete bunding and drip trays and handle them as chemical waste.

 

The Contractor should use suitable containers with proper labels to store chemical wastes in accordance with Code of Practice on the Packaging, Labeling and Storage of Chemical Waste. The Contractor should also advise their workers of the proper procedures in handling the chemical waste. All the trip tickets for chemical waste disposal were properly kept in the site office.

 

The Contractor was reminded to increase the frequency of inspection and cleaning of the site drainage system, including permanent desilting chambers, desilting facilities, oil interceptor bypass tank, DP3 and DP4 and all the trapezoidal channels. Moreover, the Contractor should apply approved pesticides in the stagnant water ponds.

 

All the runoff from the parking area should be pumped to the desilting facilities and oil interceptors to remove suspended solids and oil & grease prior to discharge.

 

 

8.0          Status of Environmental Licensing and Permitting

 

All permits/licenses valid in this reporting month are summarized in Table 8.1.


 

Table 8.1           Summary of environmental licensing and permit status

Description

Permit No.

Valid Month

Section

From

To

Amended Environmental Permit

EP-134/2002/K

04/02/13

---

§  Site clearance

§  Construction of a temporary storm water system

§  Stockpiling of 6 million m3 of public fill

§  Setting up two barging points for transporting the stockpiled public fill by barges

§  Setting up a temporary barging point at the existing Explosive Off-loading Barging Point for the month of May 2004 to December 2004 for transporting the stockpiled public fill by barge

§  Construction of operation of a construction and Demolition Material Sorting Facility (C&DMSF)

§  Setting up a Construction and Demolition Material Crushing Facility at the TKO Basin

§  Remove the temporary fill bank

 

Chemical Waste Producer

5213-839-H3552-01

21/01/14

---

Spent Lubricating Oil and Spent Battery

Marine Dumping Permit

EP/MD/14-119

21/01/14

31/03/14

Approval for dumping 2,800,000 tons (approximately equal to 1,555,555 cu.m. bulked quantity) of Public Fill (Reclamation Materials) from Tseung Kwan O Area 137 Fill Bank and Tuen Mun Area 38 Fill Bank to designated dumping area at Guanghaiwan of Taishan

Billing Account for Waste Disposal

7018998

---

---

---

Effluent Discharge License

Application in progress

 

 

9.0          Environmental Non-conformance

 

9.1          Summary of air quality, noise and marine water quality

 

No Action and Limit level exceedance of 1-hour and 24-hr TSP monitoring was recorded in this reporting month.

 

Since no documented complaints on noise issue were received in this reporting month, no Action Level exceedance was recorded. Besides, no exceedance in Limit Level was recorded according to the result from Day-time monitoring.

 

According to the summary of marine water monitoring results, no exceedance of Action and Limit levels was recorded for this reporting month.

 

9.2          Summary of Environmental Complaints

 

No complaint was received in this reporting month.

 

9.3       Summary of Notification of Summons and successful Prosecution

There was no notification of summons and successful prosecution respect to environmental issues registered in this reporting month.

 


 

10.0      Implementation Status

 

10.1      Implementation Status of Environmental Mitigation Measures

 

An updated summary of the Environmental Mitigation Implementation Schedule (EMIS) is presented in Appendix I I. Most of the necessary mitigation measures were implemented properly. Any deficiencies were noted in the remarks of the schedule.

 

10.2        Implementation Status of Event and Action Plan

 

Since no exceedance of Action and Limit level of air, noise and marine water monitoring results was recorded for this reporting month, no further action was required.

 

10.3      Implementation Status of Environmental Complaint, Notifications of Summons and Successful Prosecutions Handling

 

No complaint, notification of summon and successful prosecution was received in this reporting month. A summary of environmental complaints, notifications of summons and successful prosecutions was given in Table 10.1 and further details of the complaint could be found in the Complaint Log (Appendix I L).

 

Table 10.1         Summary of Environmental Complaints and Prosecutions

Complaints logged

Summons served

Successful prosecution received

February 2014

Cumulative

February 2014

Cumulative

February 2014

Cumulative

0

0

0

0

0

0

 

 

11.0        Conclusions and recommendations

 

Conclusions

 

Impact monitoring of air quality, noise and water quality were carried out at designated locations in accordance with the EM&A Manual in this reporting month.

 

No Action and Limit level exceedance of 1-hour and 24-hr TSP monitoring was recorded in this reporting month.

 

Since no documented complaints on noise issue were received in this reporting month, no Action Level exceedance was recorded. Besides, no exceedance in Limit Level was recorded according to the result from Day-time monitoring.

 

According to the summary of marine water monitoring results, no exceedance of Action and Limit levels was recorded for this reporting month.

 

No complaint, prosecutions and notifications of summons were received in this reporting month.

 

According to the ET weekly site inspections carried out in this reporting month, the Contractor generally implemented sufficient dust mitigation measures, including operation of the mist spraying systems and automatic wheel washing facilities, dampening of haul roads and stockpiling areas.

 

Recommendations

 

According to the environmental site inspections performed in the reporting month, the following recommendations were provided:

 

Air Quality

§  Ensure the frequency of water spraying on haul roads, unloading areas and stockpiles to be sufficient to suppress the dust sources;

§  Provide proper maintenance for the powered mechanical equipment and barges to avoid emission of dark smoke;

§  Provide water spraying onto the truckloads during inspection of fill material;

§  Conduct road sweeping on all paved haul roads and public roads especially outside and near the site egress by the road sweeper. Undertake water spraying on stockpiling area by water bowers;

§  Erect adequate speed limit signs to advise the truck drivers of the speed limit;

§  Operate mist spraying systems and automatic water sprinklers in the Fill Bank;

§  Implement the dust mitigation measures for the site activities;

§  Designate proper haul roads to ensure effective water spraying; and

§  Ensure all vehicles to be washed before leaving the site egress by provision, operation and maintenance of automatic wheel washing facilities.

 

Noise

§  Conduct noisy activities at a farther location from the NSRs.

 

Water Quality

§  Maintain the drainage system, including the trapezoidal channels, permanent desilting chambers, regularly;

§  Operate and maintain the silt curtains regularly;

§  Operate the cleaning vessel within the TKO Basin regularly;

§   Clean up the fill material on the concrete pavement at BHA frequently; and

§  Remove the stagnant water or provide approved pesticides for the stagnant water in the permanent desilting chambers, if any.

 

Landscape and Visual

§  Provide hydroseeding on the exposed slopes, on which the final profile has been formed;

§  Erect all the site hoarding/chaining fences in accordance with agreed design at proper location;

§  Maintain the hydroseeded slopes in accordance with the Landscape Plan.

 

Chemical and Waste Management

§  Remove waste materials from the site to avoid accumulation regularly;

§  Handle and store chemical wastes properly;

§  Remove unwanted material in the existing stockpiles and avoid further dumping of such material;

§  Provide and maintain sufficient drip trays for diesel drums, chemical containers, chemical waste storage drums and diesel operated generator set;

§  Maintain mesh screen on top of the additional drainage to avoid improper dumping of rubbish;

§  Maintain good housekeeping at the workshop area;

§  Ensure sufficient tarpaulin sheets are provided to cover drip trays; and

§  Avoid soil being polluted during oil filling and equipment maintenance; hence, properly remove and store the contaminated soil, if any.

 

 

12.0        Future Key Issues

 

12.1        Work Programme for the Coming Month

 

As informed by the Contractor, the activities to be conducted by them in the next month included:

·       Unloading fill material at tipping hall;

·       Transferring fill material to stockpile area and BCF’

·       Construction of Contractor’s and Engineer’s site office;

·       Unloading fill material from derrick barge with mechanical claw; and

·       Construction of CCTV tower.

 

12.2        Key Issues for the Coming Month

 

Key issues to be considered in the coming month include:

 

§  Chemical and waste management;

§  Treatment of runoff and wastewater prior to discharge;

§  Dust generated from loading and unloading activities; and

§  Dust generated from dump trucks traffic.

 

Mitigation measures to be required in the coming month:

 

Air Quality Impact

§  To provide adequate water spraying on haul roads and working platform;

§  To operate and maintain automatic wheel washing facilities properly;

§  To dampen the fill material prior to unloading or movement;

§   To provide road sweeping on haul road near site egress and public roads outside site egress;

§  To ensure implementation of the dust mitigation measures for the site activities;

§  To maintain proper operation of the mist spraying system;

§  To provide proper maintenance for vehicles and machines on site; and

§  To investigate any other dust sources around the air sensitive receivers

 

Noise

§  To switch off equipment if not in use;

§  To operate silent equipment;

§   To identify the noise sources inside and outside of the site;

§  To follow up any exceedance caused by the Fill Bank operation; and

§  To re-schedule the work activities in the event of valid noise exceedance.

 

Water Quality Impact

§  To maintain the drainage system in the Fill Bank;

§  To ensure the cleanliness of oil interceptor bypass tanks and all the drainage channels;

§  To maintain the existing silt trap to ensure good efficiency of wheel wash facilities;

§  To repair, inspect and maintain the silt curtains regularly;

§  To provide covers for the drip trays to avoid stagnant water pond due to rainfall;

§  To provide proper treatment for oily water discharged form the area around air monitoring station TKO-A1;

§  To deploy a cleaning vessel to remove floating rubbish in the TKO Basin;

§  To clean up the concrete paved area at Portion I every night to avoid fill materials from being washed into the sea; and

§  To avoid any stagnant water or provide insecticide to avoid mosquito breeding in the Fill Bank.

 

Chemical and Waste Management

§  To remove waste from the site regularly;

§  To properly store and handle chemical wastes on site;

§  To implement trip ticket system for all the imported public fill and general refuse disposal;

§  To provide and manage sufficiently sized drip trays for diesel drums or chemical containers;

§  To remove existing unwanted material in the stockpiles and avoid improper disposal at the Fill Bank through inspection of imported truckloads;

§  To maintain proper housekeeping at the workshop area;

§  To remove the oil stains in the event of leakage and handle all materials using for this cleaning works as chemical waste;

§  To maintain mesh screen on top of the additional drainage, DP3 opening to avoid improper dumping of rubbish into this channel; and

§  To identify C&D material by packaging, labeling, storage, transportation and disposal in accordance with statutory regulations.

 

12.3        Monitoring Schedule for the Coming Month

 

The proposed EM&A program of the coming month is attached in Appendix I M.

 

 

 

- END OF REPORT -