1 INTRODUCTION AND PROJECT INFORMATION

1.1 Background

1.1.1 The Project is a Designated Project under the Environmental Impact Assessment Ordinance (EIAO) (Cap. 499). An Environmental Impact Assessment (EIA) Report together with an Environmental Monitoring and Audit (EM&A) Manual were approved on 14 July 2000 (Register Number: EIA-043/2000). The Project is governed by an Environmental Permit (EP) (EP-324/2008) which was granted on 23 December 2008. A variation of EP (VEP) was applied and the VEP (EP-324/2008/A) was subsequently granted on 31 January 2012. An additional VEP has been applied on 24 February 2014 and the VEP (EP-324/2008/B) was subsequently granted on 17 March 2014.

1.1.2 Chun Wo Construction & Engineering Co Ltd (Chun Wo) was commissioned by the Civil Engineering and Development Department (CEDD) as the Civil Contractor for the Entrusted Portion of Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling Stage 2. Meinhardt Infrastructure & Environment Ltd (MIEL) has been appointed by Chun Wo as the Environmental Team (ET) to fulfill the corresponding EM&A requirements pursuant to Environmental Permit No. EP-324/2008/B in accordance with the Updated EM&A Manual (dated October 2013) for Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling Stage 2. The EM&A programme commenced in 5 November 2013.

1.1.3 Figure 1 shows the works areas for the Entrusted Portion of Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling Stage 2.

1.2 Construction Programme and Activities

1.2.1 The master construction programme for the entire construction period is presented in Appendix A. The major construction activities undertaken in the reporting period are summarized below:

· Hoarding and fencing erection, initial survey and base slab demolition;

· Site clearance and tree felling;

· Excavation works and base slab demolition;

· Pre-drilling works and piling works;

· Piling works for Bridge E;

· Extension of box culverts;

· Cable detection and trial trenches;

· Tree Felling Works;

· Trial Pit Excavation;

· Bored pile and bored pile wall construction;

· Catch Fence Installation;

· Extension of Bored pile for bored pile wall;

· Erection of site office;

· Construction of haul road and temporary soil platform for geotechnical works;

· Slope upgrading works;

· Noise barrier installation;

· Mini pile construction;

· Load test for installed Mini pile;

· Water pipe Installation;

· Diversion of DN1400;

· Filling Works;

· Laying of storm drains;

· Laying of concrete pipe works;

· Pile Cap works;

· Receiving & Jacking Pit;

· Retaining Structure;

· Road works at Fanling Highway;

· Sewer works;

· Soil nail construction;

· RC structure of new valve control & Telemetry House;

· Demolition of Huts;

· Abutment construction for Bridge E;

· Excavation by trenchless method;

· Pier Construction;

· Socket H-pile installation;

· Site formation;

· Installation of DN1200 Drainage Pipe by Pipe Jacking Method Across Fanling Highway;

· Trim pile head for bored pile wall;

· Diversion of existing cycle track; and

· Utilities duct laying.

1.3 Project Organisation

1.3.1 The project organization structure is shown in Appendix B. The key personnel contact names and numbers for the Project, together with the general enquiry hotline, are summarised in Table 1.1.

Table 1.1 Contact Information of Key Personnel

Party	Role	Position	Name	Tele-phone	Fax
AECOM	Engineer’s Representative	Senior Resident Engineer	Mr. Alan Lee	2171 3303	2171 3498
AECOM	Engineer’s Representative	Resident Engineer (Environmental)	Mr. Perry Yam	2171 3350	2171 3498
Mott MacDonald	Independent Environmental Checker (IEC)	IEC	Mr. Terence Kong	2828 5919	2827 1823
Chun Wo	Contractor	Site Agent	Mr. Daniel Ho	2638 6144	2638 7077
		Senior Environmental Officer	Mr. Sam Lam	2638 6168	2638 7077
		Environmental Officer	Mr. Victor Huang	2638 6181
Meinhardt	Environmental Team (ET)	ET Leader	Mr. Fredrick Leong	2859 1739	2540 1580
Enquiry Hotline	General Enquiry	--	Ms Helena Mak	6355 1731	--

1.4 Purpose of the Report

1.4.1 This is the Annual EM&A Review Report which summaries the impact monitoring results and audit findings for the Project during the reporting period between November 2013 and October 2014.

2 SUMMARY OF EM&A REQUIREMENTS

2.1 Environmental Impact Hypothesis under Monitoring

2.1.1 The EIA Report concluded that with proper mitigation measures implemented, fugitive dust emission during construction phase would be controlled and will not exceed the acceptable criteria.

2.1.2 For construction noise, exceedances were predicted only at 2 schools (SR41 Wong Shiu Chi Middle School and SR45 HK Teacher’s Association Secondary School) but they are out of the scope of this EM&A Programme. Hence the EIA did not anticipate any noise exceedances during construction phase within the scope of this EM&A Programme.

2.1.3 For water quality, it is also anticipated that with proper protection measures being implemented, the water quality during construction phase would be locally confined and controllable.

2.1.4 The above criteria have been tested under this EM&A Programme during the reporting period.

2.2 Monitoring Requirements

2.2.1 In accordance with the Updated EM&A Manual, environmental parameters including air quality, noise and water quality have been monitored. The specific parameters, monitoring frequency and the respective Action and Limit Levels are given in Table 2.1 and the location of the monitoring station is shown in the Figure 2.

Table 2.1 Monitoring Parameter

Parameter	Unit	Action Level	Limit Level	Frequency
Air Quality
1-hour TSP	mg/m³	292.7	500	Three times every 6 days
24-hour TSP	mg/m³	170.3	260	Once every 6 days
Construction Noise
Leq 30min	dB(A)	When one documented valid complaint is received	75	Once every Week
Water Quality
Depth		--	--	Three occasions per week
Temperature	°C	--	--	Three occasions per week
Salinity	ppt	--	--	Three occasions per week
pH	--	--	--	Three occasions per week
DO	mg/L	6.7	4mg/L or 40% saturation at 15 degree Celsius	Three occasions per week
DO Saturation	%	--	--	Three occasions per week
Turbidity	NTU	81.9NTU or 120% of upstream control station’s Tby of the same day	91.9NTU or 130% of upstream control station’s Tby of the same day	Three occasions per week
SS	mg/L	42.6 mg/L or 120% of upstream control station’s SS of the same day	46.8 mg/L or 130% of upstream station’s SS of the same day and specific sensitive receiver water quality requirements	Three occasions per week

2.2.2 The Event and Action Plan for the occurrence of non-compliance of the criteria of the monitoring parameters is annexed in Appendix C.

Temporary Suspension of Box Culvert Works and Water Quality Monitoring

2.2.3 The box culvert works have been partially completed by the end of March 2014 except the last construction activity, which is the installation of a base slab at Box Culvert ID4. Due to the loading requirement of a fresh water main under the box culvert, installation of the base slab at Box Culvert ID4 has to be scheduled in November 2015 after the utilities diversions were completed, and therefore the construction works are temporarily suspended. The 4-week post construction water quality monitoring will be conducted after the installation of the base slab finishes, hence the completion of the box culvert works. As such, impact monitoring for water quality is anticipated to be resumed in November 2015 during the course of remaining box culvert works.

2.3 Environmental Mitigation Measures

2.3.1 Environmental mitigation measures have been recommended in the EM&A Manual and is given in Appendix D. The implementation status for the reporting period is also given in the Appendix.

3 SUMMARY OF EM&A MONITORING DATA

3.1 Monitoring Data

3.1.1 Monitoring has been conducted in accordance with the specification in the EM&A Manual in the reporting period. Meteorological data for the reporting period have been extracted from Hong Kong Observatory and are given in Appendix E. Monitoring data with graphical presentation for the reporting period have been given in Appendix F. A summary on the monitoring results has also been given in Table 3.1.

Table 3.1 Summary of Monitoring Data in the Reporting Period

Monitoring Location	Minimum	Maximum	Average
Air Quality
1-hour Total Suspended Particulate
SR77	34.6mg/m³	283.0mg/m³	135.5mg/m³
24-hour Total Suspended Particulate
SR77	14.7mg/m³	402.1mg/m³	137.8mg/m³
Construction Noise
SR77	54.5dB(A)	73.5dB(A)	64.4dB(A)
Water Quality
DO
I5	4.4mg/L	10.1mg/L	8.0mg/L
Baseline Data	6.6mg/L	8.8mg/L	8.0mg/L
30% disturbance due to human activity	4.6mg/L	6.2mg/L	5.6mg/L
Turbidity
I5	6.3NTU	86.7NTU	24.7NTU
Baseline Data	12.4NTU	91.5NTU	26.1NTU
30% disturbance due to human activity	16.1NTU	118.9NTU	34.0NTU
SS
I5	2.0mg/L	72.5mg/L	11.9mg/L
Baseline Data	6.5mg/L	46.5mg/L	16.4mg/L
30% disturbance due to human activity	8.5mg/L	60.5mg/L	21.3mg/L

3.2 Summary of Monitoring Exceedances

3.2.1 The number of exceedance events recorded in the reporting period is summarized in Table 3.2.

3.2.2 Investigations for the exceedance events in the reporting period have been completed. Only 2 of the exceedances of Suspended Solids and Turbidity respectively recorded on 18 December 2013 were concluded to be project related. Necessary remedial actions have been taken and the exceedances have been rectified. The respective investigation reports have been presented in the respective Monthly EM&A Reports.

Table 3.2 Summary of Exceedance Events in the Reporting Period

Parameter		Number of Exceedance Events	Number of Project Related Exceedance Events
Air Quality
1-hour Total Suspended Particulates	Action Level	0	0
1-hour Total Suspended Particulates	Limit Level	0	0
24-hour Total Suspended Particulates	Action Level	17	0
24-hour Total Suspended Particulates	Limit Level	4	0
Construction Noise
Leq 30min	Action Level	0	0
Leq 30min	Limit Level	0	0
Water Quality
DO	Action Level	2	0
DO	Limit Level	0	0
Turbidity	Action Level	2	0
Turbidity	Limit Level	2	1
SS	Action Level	1	0
SS	Limit Level	8	1

3.2.3 The Contractor has been reminded to strengthen the mitigation measures including:

· Building a river diversion structure at the river channel to protect the river from potential site runoff and fill up the leakage and strengthen the river diversion works to avoid future leakage;

· Pay attention on accidental site runoff, including construction of additional protection structure if necessary, to minimize the risk of site runoff;

· Silty effluent should be treated/desilted before discharged. Untreated effluent should be prevented from entering public drain channel;

· Channels or earth bunds or sand bag barriers should be provided on site to prevent surface runoff and properly direct stormwater to silt removal facilities;

· Covering of exposed slopes near the river,

· Watering and covering of exposed slopes and stockpiles to avoid fugitive dust emission;

· Water spraying should be properly implemented whenever necessary for the unpaved roads, access roads and construction areas;

· All vehicles should be washed to remove any dusty materials before leaving the construction site, and the wheel washing facilities should be properly maintained to ensure proper functioning;

· Ensuring regular maintenance and cleaning of waste storage area;

· All types of wastes, both on land and floating in the river stream, should be collected and sorted properly, and also be disposed timely and properly;

· Refuse collection bins should be labelled properly;

· Ensuring the provision of tree protection zone for all existing trees to be transplanted or retained; and

· All chemicals stored on site should be provided with drip trays.

4 ENVIRONMENTAL NON-CONFORMANCE

4.1 Summary of Environmental Non-Compliance

4.1.1 No environmental non-compliance was recorded in the reporting period.

4.2 Summary of Environmental Complaints

4.2.1 One (1) environmental complaint was received in the reporting period regarding water quality of Ma Wat River. Investigation has been conducted and the complaint was considered as invalid under this Project.

4.3 Summary of Environmental Summon and Successful Prosecutions

4.3.1 No environmental related prosecution or notification of summons was received in the reporting period. The cumulative statistics are provided in is provided in Appendix G.

5 REVIEW OF THE VALIDITY OF EIA PREDICTIONS

5.1.1 The EIA report predicted that with proper implementation of the mitigation measures for air, noise and water quality, environmental impact would be locally confined and controllable. During the reporting period, only 2 exceedances were recorded in 1 day due to a leakage at the bund used for river diversion. The exceedance event is rectified after the leakage has been blocked. Other exceedances were concluded not project related. Hence, it is considered that the EIA predictions is valid for the reporting period.

6 REVIEW OF EM&A PROGRAMME

6.1.1 The EM&A programme was considered successfully and adequately conducted during the course of the reporting period.

6.1.2 The box culvert works have been partially completed by the end of March 2014 except the last construction activity, which is the installation of a base slab at Box Culvert ID4. Due to the loading requirement of a fresh water main under the box culvert, installation of the base slab at Box Culvert ID4 has to be scheduled in November 2015 after the utilities diversions were completed, and therefore the construction works were temporarily suspended. The 4-week post construction water quality monitoring will be conducted after the installation of the base slab finishes, hence the completion of the box culvert works. As such, impact monitoring for water quality is anticipated to be resumed in November 2015 during the course of remaining box culvert works.

7 CONCLUSIONS

7.1.1 The EM&A programme was carried out by the ET in accordance with the EM&A Manual requirements. It is concluded from the environmental monitoring and audit works that adequate environmental mitigation measures have been implemented by the civil works contractors where appropriate in the reporting period.

7.1.2 In the reporting period, a total of 36 exceedance events have been recorded. Only 2 of the exceedances of Suspended Solids and Turbidity recorded on 18 December 2013 were concluded to be project related. Necessary remedial actions have been taken and the exceedances have been rectified.

7.1.3 No environmental non-compliances were noted. One environmental complaint, which was concluded as an invalid complaint under this Project after investigations, was received. No environmental related prosecution or notification of summons were received in the reporting period.

7.1.4 The box culvert works have been partially completed by the end of March 2014 except the last construction activity, i.e. installation of a base slab at Box Culvert ID4. Due to the loading requirement of a fresh water main under the box culvert, installation of the base slab at Box Culvert ID4 has to be scheduled in November 2015 after the utilities diversions were completed, and therefore the construction works are temporarily suspended. The 4-week post construction water quality monitoring will be conducted after the installation of the base slab finishes, hence the completion of the box culvert works. As such, impact monitoring for water quality was not necessary in the reporting period due to temporary suspension of the construction works and is anticipated to be resumed in November 2015 during the course of remaining box culvert works.