EXECUTIVE SUMMARY

ES 1 An Environmental Permit (EP-085/2000/C) was granted to Highways Department by the Environmental Protection Department for the construction of Route 8 Project between Tsing Yi and Cheung Sha Wan. This EP covers four phases of the Route 8 Project namely Phase 1 – Ngong Shuen Chau Viaduct, Phase 2a – Nam Wan Tunnel and West Tsing Yi Viaduct, Phase 2b – East Tsing Yi Viaduct and Phase 3 – Stonecutters Bridge.

ES 2 This is the 47^th monthly Environmental Monitoring and Audit (EM&A) report for “Phase 1 - Route 8 Ngong Shuen Chau Viaduct Contract (HY/2000/21)”. This report presents the results of the EM&A works conducted during the period between 29^th May 2006 and 28^th June 2006 in accordance with the EM&A Manual which forms part of the EIA Report (Register No. AEIAR-018/1999).

ES 3 During the monitoring period, some of the major construction activities undertaken during normal hours are highlighted as follows:

i. excavation;

ii. traffic and utilities diversions;

iii. abutment backfilling;

iv. pier/portal construction;

v. bridge deck construction;

vi. viaduct finishing and surfacing,

vii. drainage system installation;

viii. segment delivery, erection and fixing; and

ix. deck parapet skin erection and fixing.

ES 4 During the monitoring period, the major construction activities undertaken during evening, night time and Public Holidays are highlighted as follows:

i. pier/portal construction;

ii. segment delivery, fixing and erection; and

iii. deck parapet skin erection and fixing.

ES 5 Monitoring of Total Suspended Particulates (TSP) and Noise were carried out in accordance with the EM&A Manual. Weekly site inspections were conducted by the ET on 2^nd, 9^th, 16^th and 23^rd June 2006 and the joint IEC monthly audit was conducted on 23^rd June 2006. No joint inspections were carried out with EPD during the reporting month.

Air Quality

ES 6 A total of 45 sets of 1-hour TSP and 15 sets of 24-hour TSP measurement were taken during the reporting period at ASR1, ASR2 and ASR3 and the results of all measurements taken were below the Action/Limit (AL) Levels.

Noise

ES 7 In order to assess the construction noise impact effectively for all noise monitoring locations (NSR1 to NSR3) from this Contract, an adjustment approach was adopted since 1^st March 2005 and had been consulted with EPD to audit merely the construction noise levels against the statutory noise limits. The measured noise levels were adjusted with the corresponding baseline levels in order to facilitate the interpretation of the construction noise levels and this in turn would determine the actual construction noise impact contributed solely by the Phase 1 construction activities.

Daytime Monitoring

ES 8 A total of 15 sets of Leq(30min) measurement were taken in the daytime (i.e. 0700 to 1900 hours on normal weekdays) at all monitoring stations (NSR1, NSR2 and NSR3) during the reporting period and no exceedances were recorded.

Evening-time Monitoring

ES 9 A total of 9 sets of 6 x Leq(5min) measurements were taken in the evening-time (i.e. 1900 to 2300 hours) at all three monitoring stations during the reporting period and no exceedances were recorded.

Night-time Monitoring

ES 10 A total of 9 sets of 4 x Leq(5min) measurements were taken at night-time (i.e. 2300 to 0700 next day) at all three monitoring stations during the reporting period and no exceedances were recorded.

Public-holiday Monitoring

ES 11 A total of 7 sets of 6 x Leq(5min) measurements were taken in public holidays (i.e. 0700 to 1900 hours during public holiday) at all three monitoring stations and no exceedances were recorded.

Water Quality

ES 12 A total of 3 Effluent Discharge Licenses were granted by EPD. In accordance with the conditions of the licenses, water sampling at designated discharge points shall be carried out on a monthly basis for area P1-SA1 (Part 1) (Grid 1 to 9) and on a quarterly basis for areas P1-SA1 (Part 2) (Grid 10 to 27, Container Port Road E/B), P1-SA6, P1-SA8 and P1-SA11.

ES 13 3 water samples at P1-SA1 (Part 1) were taken on 7^th June 2006 by CHEC. The water samples were subsequently tested by a HOKLAS accredited laboratory and the results indicated that the quality of water discharged were well within the acceptable discharge limits. The next water sampling is scheduled in July 2006 for area P1-SA1 (Part 1).

Waste Management

ES 14 A revised Waste Management Plan (Rev. 17) was submitted to EPD for information on 11^th May 2006 with the latest information including the most up to date estimation of inert C&D materials and non-inert C&D materials

ES 15 With effect from 6^th February 2005, all inert C&D material had been disposed of at Tuen Mun Fill Bank. The trip ticket system has been implemented effectively during the reporting period.

ES 16 A total of 397 no. of trucks (approximately 2,382m³) of inert C&D materials were delivered to Tuen Mun Fill Bank during the reporting period. Approximate 148.58 tonnes of C&D waste was produced on-site and were delivered to SENT. In addition, no chemical waste was disposed off site during the reporting period.

ES 17 On 7^th December 2005, approval was granted by PFC, CEDD to import a maximum of 3,000m³ of soft material from “HY2002/26 – Stonecutters Bridge” for re-usage purposes. A total of 2,004m³ of soft material were delivered from HY2002/26 to Phase 1 Contract since December 2005.

Site Audits / Inspections

ES 18 Weekly site inspections were carried out by the ET and the major findings are presented below:

Item	Findings	Corrective and Preventive measures proposed by CHEC	Effectiveness of measures
1	Sandbags along the u-channels at P1-SA1 (Part 1) (near Grid 7 and Grid 8) and P1-SA1 (Part 2) (near Pier E5 to E8) were damaged. Sediment was accumulated in the u-channels at Grid 7 of P1-SA1 (Part 1) and next to Kinko site office at P1-SA1 (Part 2). Silty /standing water was accumulated in the u-channel (next to gantry) and sedimentation tank No. 7 at P1-SA1 (Part 1).	Damaged sandbags along the u-channels had been replaced. All u-channels had been cleared immediately after the site inspections. In addition, all temporary drainage and runoff control systems have been maintained properly on a weekly basis.	Completed and closed. (Please refer to Appendix Q, Photo 1 to 11).
2	Open stockpiles without entirely covered by impervious sheeting at P1-SA1 (Part 1 and Part 2) were observed.	Open stockpiles at P1-SA1 (Part 1) had been protected by hydroseeding. For area P1-SA1 (Part 2), open stockpiles have been covered by impervious sheeting properly after operation and / or end of each working day.	Completed and closed. (Please refer to Appendix Q, Photo 12 to 13).

ES 1 The monthly IEC audit was carried out on 23^rd June 2006, 1 observation and 1 reminder were recorded and are presented respectively in the table below.

Observation(s)
Item	Findings	Corrective and Preventive measures proposed by CHEC	Effectiveness of measures
1	Standing water and deposited grit/ silt were found accumulating at the u-channels next to the gantry and the sedimentation tank no. 7 at P1-SA1 (Part 1). CHEC was urged to clean up the u-channel and the sedimentation tank immediately, and also properly maintain all drainage system at least once a week.	All u-channels and sedimentation tanks had been cleared immediately after the site audit. In addition, all temporary drainage and runoff control systems have been maintained properly on a weekly basis.	Completed and closed. (Please refer to Appendix Q, Photo 7 and 8).
Reminder(s)
1	Accumulation of stagnant water was observed at various locations in P1-SA1 (Part 1). CHEC was reminded to remove the stagnant water, level uneven ground and apply the larvicidal oil as the last resort, to prevent the mosquito breeding.	Stagnant water had been cleared as far as possible. The routine anti-mosquito breeding measures have been enhanced to reduce the risk of mosquito breeding. Larvicidal oil had been applied to places where they are not easily assessable at least twice a week.	The measures provided were effective and situation would be monitored continuously. (Please refer to Appendix Q, Photo 14).

ES 2 No joint inspections were carried out with EPD during the reporting month.

ES 3 The following permits / licenses have been granted by EPD for the construction of the Phase 1 Contract and they are:-

· Environmental Permit (EP-085/2000/C)

· Chemical Waste Producer Registration (WPN – 5213-269-C3215-01)

· 3 Effluent Discharge Licences (EP482/269/0038/I; EP482/269/0039/I & EP482/269/0040/I)

· 5 Construction Noise Permits.

Environmental Complaints

ES 4 No environmental complaints were received during the reporting period.

ES 5 A total of 10 environmental complaints had been received for Route 8 - Phase 1 Ngong Shuen Chau Viaduct contract since the commencement of the construction.

Notifications of Summons and Prosecution

ES 6 Since the commencement of construction, no notifications of summons nor prosecution were received on the environmental performance for this Contract.

Future Key Issues

ES 7 The tentative program of major site activities as well as the impact prediction and control measures for the coming three months, i.e. July 2006 to September 2006 are summarized below:

Construction Works	Major Impact Prediction	Control Measures
Utilities diversion; abutment and pier/portal construction, segment erection and bridge deck construction.	Air impact (dust and machine emission)	i. Frequent watering of haul road and unpaved/exposed areas; ii. Frequent watering or covering stockpiles with tarpaulin or similar means; iii. Regular maintenance of onsite machineries and vehicles; and iv. Reinstate the worked area by hydro-seed or similar means.
	Water quality impact (muddy run-off)	i. Collecting and recycling of wastewater produced on-site if possible; ii. Perimeter protection such as sandbag barriers and sealing the bottom of concrete barrier to avoid run-off entering the existing storm water drainage system; iii. Diverting the collected effluent to de-silting facilities for treatment before discharge to public drains; and iv. Covering of exposed slope with tarpaulin or similar means during rainstorm
	Noise Impact	i. Scheduling of noisy construction activities if necessary to avoid persistent noisy operation; ii. Controlling the number of plants use on site; iii. Regular maintenance of machines; and iv. Use of acoustic barriers if necessary.