Improvements to

San Tin Interchange (Contract No. HY/2004/09)

 

 

Monthly Environmental Monitoring & Audit Report

Report No. 1517

 

 

August October 2006

 

 

 

 

 

 

 

 

 

 

 

 

 

 


 

Client :                 Chun Wo Construction & Engineering Co., Ltd.

Contract No.:

Project Title :       Improvements to San Tin Interchange

(Contract No. HY/2004/09)

Project No.: 3878

Document No.:   3878-OR0251-00/elt17024

 

Controlled Copy No.:

Document Title:    Monthly Environmental Monitoring & Audit Report No. 17 5

Covering Letter / Transmittal Ref. No.:

3878/elt16707elt17025/OG107OG191/SB/hn

63

Date of Issue:

  152th November 2006

 

Revision, Review and Approval Records

 

 

 

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00

Monthly EM&A Report

No. 175August October 2006

Various/

142th September November 2006

Henry Ng/

142th September November 2006

Susana Bezy/

142th September November 2006

Revision

Description

Prepared by / date

Reviewed by / date

Approved by / date

 

Distribution (if insufficient space, please use separate paper)

Controlled Copy No.

Issued to

01 – 04

EPD

05 – 06

Maunsell

07

Chun Wo

08

ERM

09

ACL

 

 


1            Environmental Status. 1

1.1         Works undertaken during the Reporting Period. 1

1.2         Environmental Permit and Licences. 1

1.3         Environmental Document Submissions to EPD.. 1

1.4         Environmental Monitoring Locations. 1

2            Environmental Measures and Implementation Status. 2

3            Monitoring Results. 2

3.1         Noise Monitoring. 2

3.2         Water Quality Monitoring. 3

3.3         Landscape and Visual Resources. 3

3.4         Ad-hoc Air Quality Monitoring. 4

3.5         Waste Management 4

4            Environmental Audits. 4

4.1         Site Inspection and Audit 4

4.2         Environmental Exceedances. 5

4.3         Environmental Non-compliance. 6

4.4         Environmental Complaint and Prosecution. 6

5            Forecast and Schedule. 6

5.1         Key Issues for the Coming Months. 6

5.2         Monitoring Schedules for the Next Month. 6

6            Conclusion. 1


List of Annexes

Annex A               Contractor’s Works Programme

Annex B               Mitigation Measures Checklist

Annex C               Calibration Certificates

Annex D               Noise Monitoring Results

Annex E               Water Quality Visual Inspection Reports

Annex F               Landscape & Visual Resources Inspection Reports

Annex G               Weekly Site Inspection Reports

Annex H               Notification of Environmental Exceedances and Non-compliance Forms and Non-Compliance Forms

Annex I                 Action and Limit Levels

Annex J                Cumulative Statistics on Complaints, Notifications of Summons and Successful Prosecutions

 

List of Tables

Table 1.1             Details of Permits and Licenses issued in October 2006

Table 1.2             Summary of Environmental Submissions to EPD in October 2006

Table 1.3             Noise Monitoring Stations

Table 3.1             Summary of Noise Monitoring Results during Normal Working Hours

Table 3.2             Summary of Noise Monitoring Results during Restricted Hours – All days during the evening (1900 to 2300 hours), and general holidays (including Sundays) during the day-time and evening (0700-2300 hours)

Table 3.3             Summary of Noise Monitoring Results during Restricted Hours – All days during the night-time (2300 to 0700 hours)

Table 3.4               Summary of Waste Disposal for October 2006

Table 5.1             Proposed Noise Monitoring Schedule for November 2006

 

List of Figures

Figure 1              Site Plan & Locations of Noise and Air Quality Monitoring Stations

 


Executive Summary

Atkins China Limited (ACL) has been appointed by Chun Wo Construction & Engineering Co., Ltd. to implement the Environmental Monitoring and Audit (EM&A) programme for the construction works under Contract No. HY/2004/09 Improvements to San Tin Interchange (hereinafter, the Project).

The construction of the Project commenced since 21st June 2005.  This report is the fourteenth fifseventhteenth monthly EM&A report for the Project which summarises the monitoring results and audit findings during the reporting period from 1st October 2006 to 331st 1st AugustOctober 2006.

Environmental Monitoring and Audit Progress

The monthly EM&A programme was undertaken in accordance with the EM&A Manual.  A summary of the monitoring activities in this reporting period is listed below:

·         Weekly site inspections were undertaken jointly with the Contractor and Engineer’s Representative (ER) on 3rd5th3rd, 120th, 17th 5th,24th and 31th3126th Octost berAugust 2006. The Independent Environmental Checker (IEC) joined the site inspection on 264th August October 2006.

·         Noise monitoring at three designated monitoring stations was undertaken on 3rd1st, 111th, 17th, 2319th, 27th rdand 30th 31st August October 2006 during normal working hours; and on 1st, 8th, 15th, 22nd, 243th, 25th and 29th 31st AugustOctober 2006 during the restricted hour periods on a weekly basis when there were construction activities scheduled during those periods. Also, o  One ad-hoc monitoring was undertaken on 12th August 2006 in response to following an exceedance of lLimit lLevel recorded on 11th August 2006.

·         Visual site surveillance for water quality was undertaken three times a week.

·         Site inspections for landscape and visual resources were undertaken on 188th and 30258th August October 2006.

Breaches of Action and Limit Levels

There were totally seven seven records of environmental exceedances during the reporting period, of which six were recorded during the reporting period, of which six were recorded during restricted hours noise monitoring on 1st6th, 83th, 15th, 22nd, 24th, 25th 20th, 27th and 3129th st August October 2006, and one was recorded on 18th October 2006 with respect to excavation at the identified contaminated area at site A prior to approval of the submitted Contamination Assessment Report (CAR) and Remediation Action Plan (RAP) for Sites A and E by EPD.

, and one was recorded during normal working hours noise monitoring on 11th August 2006.

For the restricted hours noise monitoring,For the restricted hours noise monitoring, the exceedances were proved not to have been caused by the site activities of the Contractor.

Environmental Non-Compliance

There was one environmental non-compliance recorded on 18th October 2006 during this reporting period which was due to excavation at the contaminated area at site A prior to EPD’s approval of the submitted CAR / RAP (Sites A and E). Relevant parities were immediately notified and the excavation was stopped.  The stockpile of excavated material was stockpiled on-site and covered by tarpaulin sheet on the top and at the bottom. The Contractor has implemented mitigation measures which were identified by the ET.

There was one The environmental exceedance recorded during and one non-compliance regarding to the normal working hours noise monitoring was due to the measured Leq (30min) at on Monitoring Station CM1 was found to exceeding the Limit Level of 75dB(A), which was not in compliance with the requirements mentioned in EIA Report and EM&A Manual. During the measurement period, concrete breaking using a breaker was being undertaken at the Slip Road A works area at side of San Tin Highway. The Contractor was advised to stop the concrete breaking works in the concerned area immediately to avoid further exceedances.  Following the Event and Action Plan for construction noise, additional noise measurement was conducted on the following day (12th August 2006) during which no concrete breaking activity was being undertaken. The measured Leq (30min) noise level was found to be 67dB(A).  Thus, the Contractor was advised to provide mitigation measures as necessary such as and reminded that movable noise barriers should be provided to avoid exceedances caused by prior to any further site concrete breaking works in the concerned area following the recommendations in Section 3.47 and Figure 3.5 of the Project EIA Report. Further to discussion with the Contractor, no further concrete breaking activities will be required in the concerned area. Following the Event and Action Plan for construction noise, additional noise measurement was conducted on the following day (12th August 2006) in which no concrete breaking activity was being undertaken. The measured Leq (30min) noise level was found to be 67dB(A).

Complaint Log

No environmental complaints were received during this reporting period.

 

Notifications of Summons and Prosecutions

There were no notifications of summons or prosecutions received during this reporting period.

Reporting Changes

This report has been developed in compliance with the reporting requirements for the subsequent monthly EM&A reports as required by the Project EM&A Manual.

Future Key Issues

The key issues with respect to the works in the forthcoming 2 months include:

·          Laying of drainage pipes;

·          Road widening works;

·          Trench works;

·          Storage and preparation of precast viaduct segments;

·          Erection of precast viaduct segments;

·          Installation of parapet walls; and

·          Installation of noise barrier.

Installation of viaduct segments will continue in September October 2006. 

The Contamination Assessment Report (CAR) and Remediation Action Plan (RAP) of Site A and Site E will be finalized and submitted after fFurther sampling at Site A in response to ER’s comments on the Contamination Assessment Report (CAR) and Remediation Action Plan (RAP) of Site A and Site E was conducted in August 2006.  The CAR / RAP (Sites A and E) CAR and RAwere submitted to EPDfinalized in October 2006  and are currently being under reviewedwill be finalized upon receipt of the analysis results.


1                     Environmental Status

1.1               Works undertaken during the Reporting Period

The major construction activities undertaken during this reporting period are summarised below:

·          Bored piling;

·          Laying of drainage pipes;

·          Road widening works;

·          Trench works;

·          Storage and preparation of precast viaduct segments; and

·          Erection of precast viaduct segments.

The site plan of the Project is shown in Figure 1.  The Contractor’s works programme is provided in Annex A.

1.2               Environmental Permit and Licences

There were no changes or clarification to the Environmental Permit (EP-190/2004) during the reporting period.

Seven One Construction Noise Permit (CNP) was issued in August October 2006. Details of the CNP are summarised in Table 1.1.  One CNP (Permit No. PP-RN0026-06) for carrying out percussive piling works from 15th August 2006 to 13th November 2006 was issued on 31st July 2006 and received by the Contractor in August 2006.

Table 1.1   Details of Permits and Licenses issued in August October 2006

Permit / License

Reference No.

Issue Date

Expiry Date

Construction Noise Permit for general construction work

GW-RN0500-06

6th October 2006

30th December 2006

 

Construction Noise Permit for general construction work

GW-RN0427-06

22nd August 2006

3rd March 2007

Construction Noise Permit for general construction work

GW-RN0428-06

23rd August 2006

10th March 2007

Construction Noise Permit for general construction work

GW-RN0431-06

24th August 2006

7th September 2006

Construction Noise Permit for general construction work

GW-RN0435-06

29th August 2006

30th September 2006

Construction Noise Permit for general construction work

GW-RN0436-06

29th August 2006

11th October 2006

 

1.3               Environmental Document Submissions to EPD

A summary of the status of the submissions to EPD as provided during the month of August October 2006 is presented in Table 1.2.

 

Table 1.2   Summary of Environmental Submissions to EPD in August October 2006

Item No.

Document Title

Date of Submission

1

Monthly EM&A Report No. 16 for September 2006

12th October 2006

12

Contamination Assessment Report (CAR) and Remediation Action Plan (RAP) for Sites A And E for July 2006

14th 17th August October 2006

1.4               Environmental Monitoring Locations

Noise monitoring was undertaken at three monitoring stations CM1, CM2 and CM3. The locations are shown on Figure 1.  Description of these monitoring stations is provided in Table 1.3.

 

 

 

Table 1.3   Noise Monitoring Stations

Monitoring Station ID

Description

Easting

Northing

CM1

Village house near San Tin Highway

826133

839839

CM2

Village house near San Tin Highway

826291

839918

CM3

Village house near Kwu Tung Road

826605

840076

 

2                     Environmental Measures and Implementation Status

The mitigation measures listed in the Project EIA Report, EM&A Manual and Environmental Permit and the implementation status are provided in Annex B.

Based on site inspection findings, the Contractor has implemented the required mitigation measures during construction works to date in general.  It was identified on 18th October 2006 that the identified contaminated area at Site A was excavated by the Contractor.  Relevant parties were immediately informed and excavation at the concerned area was stopped. A notification of non-compliance form was subsequently issued.  Details about the notification are described in the following sections.

3                     Monitoring Results

3.1               Noise Monitoring

3.1.1        Noise Monitoring Equipment

Details of the noise monitoring equipment are listed below and the calibration certificates are presented in Annex C:

·          Sound level meter ONO-SOKKI LA-5110

·          Acoustical calibrator ONO-SOKKI SC-2110

·          Hand-held anemometer

3.1.2        Noise Monitoring Methodology

The sound level meter was calibrated with an acoustical calibrator prior to each measurement.  It was set on a tripod at 1.2 m above local ground level at the monitoring station.  Measurement of the A-weighted Leq(30 minutes) noise level for normal daytime hours was undertaken.  Three consecutive A-weighted Leq(5 minutes) noise levels were measured for restricted hours monitoring.  Wind speed was checked during the monitoring period using the hand-held anemometer to ensure steady wind speed did not exceed 5 m/s, or gusts did not exceed 10 m/s.  After the noise measurement the sound level meter was re-calibrated using the acoustical calibrator.

3.1.3        Noise Monitoring Results

Noise monitoring was undertaken on a weekly basis when noise generating activities were underway.  The noise monitoring results obtained in August October 2006, during the normal working hours; restricted hours from 1900 to 2300 hours on normal working days and from 0700 to 1900 hours on general holidays;, and restricted hours from 2300 to 0700 hours of next day and restricted hours from 2300 to 0700 hours of next day are summarised in Table 3.1,, Table 3.2 Table 3.2 and Table 3.33, respectively. There was were no environmental exceedances of the Actione and Limit  Levels for environmental exceedance of the Action and Limit Levels for noise monitoring recorded during the normal daytime hours within the reporting period and but six six notification of exceedances were reported during the rrestricted hours. 

Details of the monitoring time period and weather condition during the monitoring period and the graphical presentation of the noise monitoring results are provided in Annex D.

Table 3.1   Summary of Noise Monitoring Results during Normal Working Hours

Date of Monitoring

Normal Hours. Noise Monitoring Results Leq(30 minutes) dB(A)

CM1

CM2

CM3

3rd October 2006

65

75

66

11th October 2006

67

71

67

19th October 2006

66

71

64

27th October 2006

66

71

63

31st October 2006

67

72

64

    

              Remarks:

(1)     CM2 is a non-façade measurement location. A positive correction of 3dB(A) has been applied to the measured noise level at CM2 according to EPD’s guideline.

 

 

 

 

 

 

Table 3.2   Summary of Noise Monitoring Results during Restricted Hours – All days during the evening (1900 to 2300 hours), and general holidays (including Sundays) during the day-time and evening (0700-2300 hours)

Date of Monitoring

Restricted Hours Noise Monitoring Results Leq(15 minutes) dB(A)

CM1

CM2

CM3

1st October 2006

64

75

63

8th October 2006

63

69

61

15th October 2006

63

68

60

22nd October 2006

65

71

58

24th October 2006

63

69

57

29th October 2006

63

69

60

Remark:   

(1)  CM2 is a non-façade measurement location. A positive correction of 3dB(A) has been applied to the measured noise level at CM2 according to EPD’s guideline.

(2)  Underlined figure indicates exceedance of the Limit Level of 65dB(A).

Table 3.3   Summary of Noise Monitoring Results during Restricted Hours – All days during the night-time (2300 to 0700 hours)

Date of Monitoring

Restricted Hours Noise Monitoring Results Leq(15 minutes) dB(A)

CM1

CM2

CM3

24th October 2006

65

69

55

Remark:   

(1)  CM2 is a non-façade measurement location. A positive correction of 3dB(A) has been applied to the measured noise level at CM2 according to EPD’s guideline.

(2)  Underlined figure indicates exceedance of the Limit Level of 50dB(A).

Date of Monitoring

Restricted Hours Noise Monitoring Results Leq(15 minutes) dB(A)

CM1

CM2

CM3

17th August 2006

65

69

59

(18th August 2006)

31st August 2006

65

6970

5955

(1st September 2006)

Remark:       

(1)               CM2 is a non-façade measurement location. A positive correction of 3dB(A) has been applied to the measured noise level at CM2 according to EPD’s guideline.

(1)               Underlined figure indicates exceedance of the Limit Level of 50dB(A).

(1)               Time of measurement at CM3 started after 23:59 hours (midnight) of Tthe Date of Monitoring” stated in the table.  Therefore, the “Date of Monitoring” for CM3 refers to 18th  and 1st   September 2006, respectively refers to the date of which nighttime noise monitoring started.

3.2               Water Quality Monitoring

Visual site surveillances for water quality were undertaken three times a week.  Based on the visual inspection results, the Contractor has followed all necessary site practices for the maintenance of the site drainage system, such as Regular and prompt rremoval of stagnant water pools to prevent mosquito breeding.

The details of the water quality visual inspection reports are provided in Annex E.

3.3               Landscape and Visual Resources

Two site inspections on the landscape and visual resources were undertaken in August October 2006.

During the first inspection, some trees (about 10 trees) inside transplantation nursery in N1 Division area were found to have been cut down.  The Contractor advised that those trees were found dead and were removed under instruction of the Engineer’s Landscape Architect.  Some trees inside transplantation nursery in N2 Division area were found to have been removed by the Contractor. The Contractor reported that those trees were found dead and removed under the instruction of the Engineer’s Landscape Architect.  Some new trees with smaller tree trunk diameter (less than 95 mm) were transplanted and labelled. 

During the second inspection, insufficient sandbags barriers were identified in the transplantation nursery in the N2 Division area to prevent soils from washing down. The Contractor was reminded to provide sufficient sandbags.The Contractor was reminded to clear up the weeds regularly as proper maintenance for the nursery.

Sandbags barrier encircling the transplantation nursery in the N1 Division area was seen to have been damaged. Some construction materials were seen to have accumulated on top of the soil surface inside the nursery. The Contractor was reminded to clear up the construction materials and place them in an appropriate storage area. Damaged sandbags should be replaced by new ones to contain the soil inside the nursery and prevent soil erosion.

Several trees inside the transplantation nursery in the N2 Division aArea were found to have fallen down during the inspection on 15th September 2006 due to the typhoon event in early August 2006 and mid-September 2006. The Contractor was reminded to replant these trees in the nursery to ensure their survival. The fallen trees were observed to have been replanted during inspection on 27th September 2006.

The details of the landscape and visual resources inspection reports are provided in Annex F.

3.4               Ad-hoc Air Quality Monitoring

No ad-hoc air quality monitoring was required during the reporting period.

3.5               Waste Management

The Contractor has adopted a trip ticket system for the disposal of construction wastes.  According to the records provided by the Contractor, the disposal of construction waste within the reporting period is summarised in Table 3.3Table 3.4Table 3.4Table 3.4.

Table 3.3444   Summary of Waste Disposal for August October 2006

Waste Type

Destination

No. of Trips

Quantity

C&D Waste

NENT Landfill

21

105 m3

C&D Waste

WENT Landfill

3

15 m3

Building debris

CEDD’s Tuen Mun Area 38 Fill Bank

41

205 m3

 

CEDD’s Tuen Mun Area 38 C&D Materials Recycling Facility

3

15 m3

Chemical Waste

Collected by Dunwell Enviro-Tech (Holdings) Ltd.

1

900 L

Chemical Toilet Waste

Collected by Proenvironmental Services Ltd.

24

-

Sewage Holding Tank Waste

Collected by Waylung Waste Services Ltd.

14

-

4                     Environmental Audits

4.1               Site Inspection and Audit

Site inspections were undertaken on 5th3rd, 120th, 17th 5th,24th and 31th3126th Octost berAugust 2006, and jointly with the IEC on 264th August October 2006.  Specific locations within the site were identified during the inspection for improvements in proper implementation of the environmental mitigation measures.  These include:

·          Prompt removal of stagnant water pools to prevent mosquito breeding.

·          Regular collection of C&D waste and general refuse to keep good site tidiness.

·          Handling of spent lubricant storage on site.

·          Replacement of damaged tarpaulin covering the slope surface.

·          Complete coverage of stockpile of excavated soil by tarpaulin to prevent dust emission.

The record of the weekly site inspection findings is provided in Annex G.

4.2               Environmental Exceedances

During the reporting period, there were seven seven records of exceedances of environmental criteria. Six of them were noise exceedances of Limit Level. Six of which were noise exceedances of the lLimit lLevel during restricted hours noise monitoring at CM1, CM2 and CM3, respectively, and one was related to excavation at the contaminated area at site A prior to EPD’s approval of the submitted CAR / RAP (Sites A and E).

For the noise exceedances, fFor the exceedances of the lLimit lLevel during restricted hours noise monitoring, the project-related works being undertaken during the measurement period were located at a distance away (at least over 100m) from the monitoring stations.  The exceedances were due to the high ambient background noise caused by road traffic on San Tin Highway.  Thus, the noise exceedances recorded were found not to be attributable to project works.

For the exceedances of the lLimit lLevel during normal working hours noise monitoring at CM1 on 11th August 2006, During the measurement period, concrete breaking using a breaker was being undertaken at the Slip Road A works area at side of San Tin Highway which is about 30m away from CM1. The Contractor was advised to stop the concrete breaking works in the concerned area immediately.  Following the Event and Action Plan for construction noise, additional noise measurement was conducted on the following day (12th August 2006) in which no concrete breaking activity was being undertaken. The measured Leq (30min) noise level was found to be 67dB(A).  Thus, the exceedance may have been caused by the concrete breaking activities.  urther investigation and discussion with ER identified that project-related works being undertaken during the measurement period were located at a distance away (at least 1000m) from the monitoring stations. The exceedances were due to the high ambient background noise caused by road traffic on San Tin Highway. Thus, the noise exceedances recorded on 1st6th, 83th, 15th, 22nd, 24th, 25th 20th, 27th and 3129th st August October 2006 were found not to be attributable to the project worksthe Contractor, no further concrete breaking activities will be required in the Slip Road A works area.  Nonetheless, the Contractor was advised to implement necessary noise mitigation measures such as and reminded that movable noise barriers (as recommended in the Project EIA Report) of 3 to 5m high with skid footing should be provided to avoid further exceedances that would be caused by potential noisy prior to any further site works in the concerned area following the recommendations in Section 3.47 and Figure 3.5 of the Project EIA Report. Further to discussion with the Contractor, no further concrete breaking activities will be required in the concerned area.

On 18th October 2006 the contaminated area (TPH contamination) at site A was found to have been excavated by the Contractor while the submitted CAR / RAP (Sites A and E) has not yet been approved by EPD. Relevant parities were immediately notified and the excavation was stopped.  The stockpile of excavated material was stockpiled on-site and covered by tarpaulin sheet on the top and at the bottom.  The excavation at the concerned area was not in compliance with the requirements mentioned in Section 8.3 of the EM&A Manual.  Thus, a notification of exceedance form was issued to the Contractor.  A meeting with the Contractor, ET, ER and IEC was subsequently held on site.Following the Event and Action Plan for construction noise, additional noise measurement was conducted on the following day (12th August 2006) in which no concrete breaking activity was being undertaken. The measured Leq (30min) noise level was found to be 67dB(A).

The Contractor’s implementation of the following mitigation measures, are required:

·             Excavation and construction works shall not be carried out at the concerned area until an approval of the CAR / RAP is received from EPD.

·             Verification sampling shall be carried out and tested for TPH level in accordance with the procedures described in the CAR / RAP (Site A and E) in order to ensure complete removal of contaminated materials. As the soil at the edge of excavation has already exposed to atmosphere, samples shall be taken at the inner layers as much as possible at the side-walls and at the bottom of the excavation;

·             Material already excavated from this concerned area (about 2m3) shall be properly stored on site and handled as contaminated material. The excavated material is currently stored on an existing concrete-paved ground floor. Tarpaulin sheets shall be used to cover the stockpile at the top and at the bottom. The Contractor shall ensure the stockpile is fully contained on-site by tarpaulin sheet and a layer of sandbag barrier shall be installed surrounding the stockpile in order to avoid any material from flushing away during heavy rainfall and to minimize wind erosion. Adequate fencing shall be provided surrounding the stockpile, and warning signs indicating “contaminated materials” shall be provided contained, only small quantity of leachate (if any) would be expected which shall be collected and treated by sedimentation and oil interceptor before discharge. The Contractor shall make sure adequate equipment / treatment facilities are readily available on site;

·             Impervious sheeting shall be used to cover the excavated area and the exposed soil surface in order to minimize material from flushing away by rain and wind erosion. In case of heavy rainfall and water is collected inside the excavated location, the collected water shall also be collected and treated before discharge; and

·             Workers must wear protective clothes, masks and personal protective equipment when works in this area and when handling excavated material.

Verification sampling, as described above, was subsequently carried out by the Contractor on 20th October 2006. Samples collected were delivered to a HOKLAS laboratory for testing TPH level.  The test results will be reviewed when they become available.

Subsequent inspections identified that the Contractor has implemented the recommended mitigation measures.  An inspection was also carried out by EPD on 24th October 2006.  No further comments were received from EPD.

With regard to the above, records of the notification of environmental exceedances and the non-compliance forms are provided in Annex H. The Action and Limit Levels for impact monitoring are provided in Annex I.

4.3               Environmental Non-compliance

During the reporting period, one environmental non-compliance was recorded on 18th October 2006 regarding to excavation at the contaminated area at site A prior to EPD’s approval of the submitted CAR / RAP (Sites A and E). Relevant parities were immediately notified and the excavation was stopped.  The stockpile of excavated material was stockpiled on-site and covered by tarpaulin sheet on the top and at the bottom. A meeting with the Contractor, ET, ER and IEC was subsequently held on site. Following the Event and Action Plan for construction noise, additional noise measurement was conducted on the following day (12th August 2006) in which no concrete breaking activity was being undertaken. The measured Leq (30min) noise level was found to be 67dB(A). The Contractor was advised to implement the mitigation measures.  Verification sampling was subsequently carried out by the Contractor on 20th October 2006 for testing TPH level.

Subsequent inspections identified that the Contractor has implemented the recommended mitigation measures.  An inspection was also carried out by EPD on 24th October 2006.  No further comments were received from EPD.

With regard to the above, record of the notification of environmental non-compliance and the non-compliance forms is provided in Annex H.

4.4               Environmental Complaint and Prosecution

During the reporting period, no environmental complaints, prosecutions or summons were received. Cumulative statistics on complaints, notifications of summons and successful prosecutions for the Project are provided in Annex J.

5                     Forecast and Schedule

5.1               Key Issues for the Coming Months

The key issues with respect to the works in the forthcoming 2 months include:

·          Laying of drainage pipes;

·          Road widening works;

·          Trench works;

·          Storage and preparation of precast viaduct segments;

·          Erection of precast viaduct segments;

·          Installation of parapet walls; and

·          Installation of noise barrier.

The CAR and RAP of Site A and Site E were submitted to EPDfinalized  and are currently being under reviewedwill be finalized upon receipt of the analysis results.The Contamination Assessment Report (CAR) and Remediation Action Plan (RAP) of Site A and Site E will be finalized including upon receipt of the analysis results of the further sampling to be conducted at Site A.

5.2               Monitoring Schedules for the Next Month

The proposed schedule for noise monitoring in September November 2006 is provided in Table 5.1 below:

Table 5.1   Proposed Noise Monitoring Schedule for September November 2006

Date

Noise Monitoring Station

6th 5th SeptemNovember 2006 (Monday)

CM1, CM2 and CM3

143th September November 2006 (Tuesday)

CM1, CM2 and CM3

21st November 2006 (Tuesday)

CM1, CM2 and CM3

29th 29th September November 2006 (Wednesday) (Friday)

CM1, CM2 and CM3

6                     Conclusion

There were six six records of exceedances of the noise Limit Level during the reporting period. However, none of these are attributable to project works.

One environmental exceedance form and one non-compliance form were also issued due to excavation at the contaminated area at Site A prior to EPD’s approval of the submitted CAR/RAP (Sites A and E).

There was one exceedance non-compliance of the Limit Level recorded during the normal hours noise monitoring due to concrete breaking activities in project works area during the reporting period.

No environmental complaints, prosecutions or summons was received during the reporting period.