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 21^st June 2005. This report is the thirty-sixth monthly EM&A report for the Project which summarises the monitoring results and audit findings during the reporting period from 1^st May 2008 to 31^st May 2008.

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:

· Site inspections were undertaken jointly with the Contractor and Engineer’s Representative (ER) on 7^th and 21^st May 2008. The Independent Environmental Checker (IEC) undertook the site inspection on 21^st May 2008.

· Noise monitoring at the designated monitoring stations was undertaken on 14^th and 27^th May 2008 during normal working hours.

· Visual site surveillance for water quality was undertaken on7^th, 14^th, 21^st and 27^th May 2008.

· Site inspection for landscape and visual resources was undertaken on 21^st May 2008.

Breaches of Action and Limit Levels

There was no environmental exceedance recorded during this reporting period.

Environmental Non-Compliance

No environmental non-compliances were received during this reporting period.

Complaint Log

No environmental complaints were received during this reporting period.

Notifications of Summons and Prosecutions

No notifications of summons or prosecutions were recorded 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 landscaping works, road paving and road widening works.

1 Environmental Status

1.1 Works undertaken during the Reporting Period

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

· Road widening works;

· Landscaping works;

· Road paving; and

· Installation of railings.

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.

There was no Construction Noise Permits (CNP) issued to the Contractor in May 2008.

1.3 Environmental Document Submissions to EPD

A summary of the status of the submissions to EPD as provided during May 2008 is presented in Table 1.1 .

Table 1.1 Summary of Environmental Submissions to EPD in May 2008

Item No.	Document Title	Date of Submission
1	Monthly EM&A Report No. 35 for April 2008	15^th May 2008

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 1.2.

Table 1.2 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.

During this reporting period, the trees planting were progressing in the M6 and M2 works area at South Division. Tree transplantation was complete at the N2 Division (near the site office) and South Division (M2 and M6 works area).

Based on site inspection findings, the Contractor has implemented the required mitigation measures during construction works to date in general.

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 L_{eq(30
minutes)} noise level for normal daytime hours was undertaken. Three consecutive A-weighted L_{eq(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 biweekly basis when noise generating activities were underway. The noise monitoring results obtained in May 2008, during the normal working hours are summarised in Table 3.1, respectively. There were no construction activities during restricted hours from 1900 to 2300 hours on normal working days and all day on general holidays within this reporting period.

There were no environmental exceedances of the Action and Limit Levels for noise monitoring recorded during the normal daytime hours within the reporting period. 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	Measured Noise Level L_{eq(30 minutes)} dB(A)
Date of Monitoring	CM1	CM2	CM3
14^th May 2008	65	73	56
27^th May 2008	67	73	60

Remark:

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

3.2 Water Quality Monitoring

Visual site surveillances for water quality were undertaken on 7^th, 14^th, 21^st and 27^th May 2008. The key observations from the visual inspection include:

· Sands and debris were accumulated in the U-channel of the site drainage system at several locations (N1 Division near the site office; works area near West Abutment; and works area near San Tin Highway). The contractor was reminded to remove the deposit regularly and keep the U-channel free of debris.

· During one inspection, site runoff was seen to have flowed into the U-channel in the works area near the West Abutment without passing via sedimentation facility. The contractor was reminded to stop the site runoff flowing into the U-channel directly and the contractor was seen to prepare sand bags immediately to divert the runoff to sedimentation facility.

· Stagnant water pools were seen at different location within the site (works area of slip Road A, works area next to the West Abutment, Castle Peak Road works area, U-channel in Tun Yu Road and sand trap in San Tin Highway). The contractor was reminded to clear stagnant water pools promptly, especially after rainstorm event, to prevent mosquito breeding.

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

3.3 Landscape and Visual Resources

One site inspection on the landscape and visual resources was undertaken in May 2008.

During the inspection, some transplanted trees at M2 in South Division and N1 Division near the site office were seen to be in very poor condition. The Contractor was reminded to properly maintain the transplanted trees so as to ensure their survival. Three newly planted trees in M2 were seen to be lacking of support. The contractor was reminded to provide support for the tree trunk.

The details of the landscape and visual resources inspection report 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 3.2.

Table 3.2 Summary of Waste Disposal for May 2008

Waste Type	Destination	No. of Trips	Quantity
C&D Waste	NENT Landfill	10	50 m³
C&D Waste	WENT Landfill	1	5 m³
Building debris	CEDD’s Tuen Mun Area 38 Fill Bank	120	600 m³
Sewage Holding Tank Waste	Collected by Waylung Waste Services Ltd.	13	-
Chemical Waste	Collected by Dunwell Enviro-Tech (Holdings) Ltd.	1	1,100 litre

4 Environmental Audits

4.1 Site Inspection and Audit

Site inspections were undertaken on 7^th and 21^st May 2008. The Independent Environmental Checker (IEC) undertook the site inspection on 21^st May 2008. Specific locations within the site were identified during the inspection for improvements in proper implementation of the environmental mitigation measures. These include:

· Removing the sands and rubbish in the U-channel in the San Tin Highway works area and at the road side near the N1 Open Laydown Area and keep the site tidy.

· Clearing the stagnant water pools (works area of Slip Road A, works area next to the West Abutment, Castle Peak Road works area, U-channel in Tun Yu Road and sand trap in San Tin Highway) to prevent mosquito breeding.

· Providing sand bags to divert silty runoff to sedimentation facility prior to discharge to the site drainage system.

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

4.2 Environmental Exceedance

During the reporting period, there was no record of exceedance during this reporting period.

The Action and Limit Levels for impact monitoring are provided in Annex H.

4.3 Environmental Non-compliance

During the reporting period, no environmental non-compliance was recorded.

A fax from EPD dated 22 May 2008 was issued to the Contractor regarding the findings of EPD’s inspection conducted on 3 April 2008 relating to the Contractor’s practice in wastewater discharge being not in compliance with their discharge licence under the Water Pollution Control Ordinance. The Contractor was warned about their malpractice in the wastewater treatment and required to provide necessary mitigation and preventive measures to avoid further non-compliance.

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 I.

5 Forecast and S chedule

5.1 Key Issues for the Coming Months

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

· Landscaping works;

· Road paving; and

· Road widening works.

5.2 Monitoring Schedules for the Next Month

The proposed schedule for noise monitoring in May 2008 is provided in Table 5.1.

Table 5.1 Proposed Noise Monitoring Schedule for June 2008

Date	Noise Monitoring Station
18^th June 2008 (Wednesday)	CM1, CM2 and CM3
27^th June 2008 (Friday)	CM1, CM2 and CM3

6 Conclusion

There was no environmental non-compliance attributable to the Project works during reporting period. However, a fax from EPD dated 22 May 2008 was issued to the Contractor regarding the findings of EPD’s inspection conducted on 3 April 2008 relating to the Contractor’s practice in wastewater discharge being not in compliance with their discharge licence under the WPCO.

There were no exceedances of the noise Limit Level during the reporting period.

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