10 ENVIRONMENTAL SITE INSPECTION

Site Audits

10.1 Site audits were carried out by ET on weekly basis to monitor the timely implementation of proper environmental management practices and mitigation measures on the Contract site. The summaries of site audits are presented in Table 10.1 and Appendix P.

Table 10.1 Summary of Site Audit

Environmental Site Inspection	Works Contracts
Environmental Site Inspection	ND/2019/01	ND/2019/02	ND/2019/03	ND/2019/04	ND/2019/05	ND/2019/06	ND/2019/07
Weekly site audit with representative of the Supervisor’s Representative and the Contractor	5, 12, 19 and 25 Oct 21	6, 12, 22 and 27 Oct 21	8, 15, 19 and 29 Oct 21	7, 15, 22 and 28 Oct 21	4, 15, 18 and 25 Oct 21	7, 15, 18 and 28 Oct 21	8, 15, 19, and 29 Oct 21
Joint Site Audit with representative of the Supervisor’s Representative, the Contractor and IEC	25 Oct 21	22 Oct 21	19 Oct 21	22 Oct 21	15 Oct 21	18 Oct 21	19 Oct 21

10.2 During site inspections in the reporting month, no non-conformance was identified. The observations and recommendations made during the audit sessions are summarised in Table 10.2.

Table 10.2 Observations and Recommendations during Site Audits

	Date	Observations and Recommendations	Follow-up
Contract No.: ND/2019/01
*Waste/ Chemical Management*	5/10/2021	Drip trays should be provided for chemical storage.	Improvement/Rectification was observed during follow-up audit session on 12 October 2021.
Contract No.: ND/2019/02
*Air Quality*	22/10/2021	Dusty haul road should be watered regularly.	Improvement/Rectification was observed during follow-up audit session on 27 October 2021.
*Water Quality*	29/9/2021	Contractor was reminded to provide sandbags along the cycle track to prevent muddy water flow offsite. (North Bridge)	Improvement/Rectification was observed during follow-up audit session on 6 October 2021.
	29/9/2021	To remove general refuse inside the drainage.	Improvement/Rectification was observed during follow-up audit session on 6 October 2021.
	29/9/2021	To provide wheel washing facilities at every site exit. (South Bridge)	Improvement/Rectification was observed during follow-up audit session on 6 October 2021.
	29/9/2021	Clear the stagnant muddy water and provide sufficient wastewater treatment before discharge.	Improvement/Rectification was observed during follow-up audit session on 6 October 2021.
	6/10/2021	Clear the stagnant muddy water and provide sufficient wastewater treatment before discharge. (North bridge)	Improvement/Rectification was observed during follow-up audit session on 12 October 2021.
	6/10/2021	Clear the sediment and stagnant water in the U-channel and provide sufficient wastewater treatment before discharge. (South bridge)	Improvement/Rectification was observed during follow-up audit session on 12 October 2021.
	12/10/2021	To clear the stagnant water in drip tray.	Improvement/Rectification was observed during follow-up audit session on 22 October 2021.
Contract No.: ND/2019/03
*Waste/ Chemical Management*	30/9/2021	Clear the rubbish at near the storage area to 巨賓.	Item was remarked as 211008-R01. Follow-up action is needed to be reviewed.
*Waste/ Chemical Management*	8/10/2021	Clear the rubbish at near the storage area to 巨賓.	Improvement/Rectification was observed during follow-up audit session on 15 October 2021.
Contract No.: ND/2019/04
*Air Quality*	30/9/2021	To replace the faded NRMM Label for the air compressor.	Improvement/Rectification was observed during follow-up audit session on 7 October 2021.
*Water Quality*	30/9/2021	Properly erect and maintain the desilting materials along green barriers at Bridge A2.	Improvement/Rectification was observed during follow-up audit session on 7 October 2021.
	30/9/2021	Regularly clear the U-channel and provide desilting materials as sediment control measure at Bridge A2 and Portion H.	Item was remarked as 211007-O03. Follow-up action is needed to be reviewed.
	30/9/2021	Regularly clear the U-channel and provide the desilting materials as a sediment control measure at Bridge F.	Improvement/Rectification was observed during follow-up audit session on 7 October 2021.
	7/10/2021	Regularly clear the U-channel and provide desilting materials as sediment control measure at Bridge A2 and Portion H.	Improvement/Rectification was observed during follow-up audit session on 15 October 2021.
	7/10/2021	Regularly clear the U-channel and provide the desilting materials as a sediment control measure at Portion E.	Item was remarked as 211015-O01. Follow-up action is needed to be reviewed.
	15/10/2021	To ensure sediment in U-Channel was cleared regularly and avoid accumulation.	Improvement/Rectification was observed during follow-up audit session on 22 October 2021.
	22/10/2021	To provide desilting materials at U-Channel.	Improvement/Rectification was observed during follow-up audit session on 28 October 2021.
*Waste/Chemical Management*	30/9/2021	To avoid oil leakage from drip tray at Bridge A3.	Item was remarked as 211007-O01. Follow-up action is needed to be reviewed.
	30/9/2021	Drip tray should be provided for chemical storage.	Item was remarked as 211007-O02. Follow-up action is needed to be reviewed.
	7/10/2021	To avoid oil leakage from drip tray at Bridge A3.	Improvement/Rectification was observed during follow-up audit session on 15 October 2021.
	7/10/2021	Drip tray should be provided for chemical storage.	Improvement/Rectification was observed during follow-up audit session on 15 October 2021.
	15/10/2021	Oil, grease and litters were observed in the water of nearby drainage at Portion H, Contractor was reminded to avoid any foam, oil, grease or litter in any watercourse.	Improvement/Rectification was observed during follow-up audit session on 22 October 2021.
	22/10/2021	Drip tray should be provided for chemical storage.	Improvement/Rectification was observed during follow-up audit session on 28 October 2021.
	22/10/2021	To clear the oil stain at temporary drainage.	Improvement/Rectification was observed during follow-up audit session on 28 October 2021.
	28/10/2021	Drip tray should be provided for chemical storage.	Follow-up action is needed to be reported in the following month.
	28/10/2021	To avoid oil leakage during maintenance.	Follow-up action is needed to be reported in the following month.
*Construction Noise Impact*	22/10/2021	Compressor should be operated with doors closed.	Improvement/Rectification was observed during follow-up audit session on 28 October 2021.
*Ecology*	30/9/2021	Properly erect and maintain 2m high solid barriers for lower reaches of Siu Hang San Tsuen Stream.	Improvement/Rectification was observed during follow-up audit session on 7 October 2021.
*Permit / Licences*	28/10/2021	To display valid Construction Noise Permit at site entrance.	Follow-up action is needed to be reported in the following month.
Contract No.: ND/2019/05
*Air Quality*	4/10/2021	Faded NRMM Labels shall be replaced on regulated machines.	Improvement/Rectification was observed during follow-up audit session on 15 October 2021.
	15/10/2021	Display valid NRMM Labels on regulated machine.	Improvement/Rectification was observed during follow-up audit session on 18 October 2021.
	15/10/2021	Stockpile should be covered properly by imperious sheeting.	Improvement/Rectification was observed during follow-up audit session on 18 October 2021.
*Water Quality*	4/10/2021	Desilting materials should be provided along the site barriers to prevent surface runoff to Ma Wat River.	Improvement/Rectification was observed during follow-up audit session on 15 October 2021.
	4/10/2021	Desilting materials should be provided along the site barriers to prevent surface runoff to On Kui Street.	Improvement/Rectification was observed during follow-up audit session on 15 October 2021.
	25/10/2021	Enhance mitigation measures to prevent surface runoff to Ma Wat River.	Follow-up action is needed to be reported in the following month.
*Waste / Chemical Management*	15/10/2021	Remove the stagnant water in the drip tray.	Improvement/Rectification was observed during follow-up audit session on 18 October 2021.
Contract No.: ND/2019/06
*Air Quality*	30/9/2021	Dusty stockpile should be covered by impervious sheeting.	Improvement/Rectification was observed during follow-up audit session on 7 October 2021.
	28/10/2021	The exposed worksite and haul road should be watered regularly.	Follow-up action is needed to be reported in the following month.
	28/10/2021	Wheel washing facilities should be available at every designated vehicle exit point.	Follow-up action is needed to be reported in the following month.
Contract No.: ND/2019/07
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Implementation Status of Environmental Mitigation Measures

10.3 According to the EIA Report, EPs and the Updated EM&A Manual, the mitigation measures detailed in the documents are recommended to be implemented during the construction phase. An updated summary of the Environmental Mitigation Implementation Schedule is provided in Appendix Q. The photographic records of measures as stipulated in EP to mitigate environmental impacts in the reporting month are presented in Table 10.3.

Table 10.3 Photographic Records and Implementation Status of Measures

EP No.	Condition	Photographic Record	Implementation Status
EP-466/2013	2.9	To minimise adverse impacts on habitats of ecological imprtance in the vicinity of the Project, 2m high solid dull green site barrier fences shall be erected around all active works areas.(Figure 12)	^^[1]
EP-468/2013/A	2.11	To minimise adverse impacts on habitats of ecological importance in the vicinity of the Project, 2m high solid dull green site barrier fences shall be erected around all active works areas.(Figure 14)	^^[1]
EP-469/2013	2.7	To minimise adverse impacts on habitats of ecological importance in the vicinity of the Project, 2m high solid dull green site barrier fences shall be erected around all active works areas.(Figure 15)	^^[1]
EP-473/2013/A	2.13	To minimise adverse impacts on habitats of ecological importance in the vicinity of the Project, 2m high solid dull green site barrier fences shall be erected around all active works areas.(Figure 16)	^^[1]
EP-475/2013/A	2.7	To minimise adverse impacts on habitats of ecological importance in the vicinity of the Project, 2m high solid dull green site barrier fences shall be erected around all active works areas.(Figure 17)	^^[1]
Implementation status:		^ Mitigation measure was fully implemented * Observation/reminder was made during site audit but improved/rectified by the contractor # Observation/reminder was made during site audit but not yet improved/ rectified by the contractor X Non-compliance of mitigation measure · Non-compliance but rectified by the contractor N/A Not Applicable at this stage as no such site activities were conducted in the reporting period

[1]: Barrier fences might be subjected to change according to phasing plan designed at detailed design stage

10.4 Under EP-467/2013/A (Condition 2.9), to minimise adverse impacts on habitats of ecological importance in the vicinity of the Project, 2m high solid dull green site barrier fences shall be erected around all active works areas. As the Works programme under above EPs were still under preparation work and the barrier fences erection was still progressing in the Reporting Month, 2m high solid dull green site barrier fences will be checked once in place. The Hoarding Plan of the above EPs is shown in Figure 13.

Implementation Status of Water Quality Mitigation Measures

10.5 According to the EIA Report and the Updated EM&A Manual, the water quality mitigation measures detailed in the documents are recommended to be implemented during the construction phase. Water quality mitigation measures implemented by the contractors were closely monitored to prevent water pollution, especially during rainy season. An updated summary of the Environmental Mitigation Implementation Schedule is provided in Appendix Q. Specific water quality mitigation measures for major construction works in the reporting month are presented in Table 10.4.

Table 10.4 Specific Water Quality Mitigation Measures for Major Construction Works in the Reporting Month

Works Contracts

Photographic Records

ND/2019/01

Hard paved exposed slope surface

Hydroseeding for slope area

ND/2019/02

Hard paved exposed slope surface

Temporary ditches to direct storm water to wastewater treatment facilities

ND/2019/03

Wastewater from wheel washing was directed to wastewater treatment facility

Regular clearance of water for wheel washing facility

ND/2019/04

Surface channels and earth bunds to direct storm water to wastewater treatment facilities for works area near Siu Hang San Tsuen Stream

Deployment of silt curtain around works area in Ng Tung Rive

ND/2019/05

Provision of sand bags around works area

Temporary ditches to direct storm water to wastewater treatment facilities

ND/2019/06

Grasscrete for slope protection

Provision of concrete berm around site area

ND/2019/07

Covering exposed slope surface with tarpaulin

Temporary rainwater storage area for rainstorm event

Solid and Liquid Waste Management Status

10.6 Waste generated from Contract No. ND/2019/01, ND/2019/02, ND/2019/03, ND/2019/04, ND/2019/05, ND/2019/06 and ND/2019/07 include inert construction and demolition (C&D) materials and non-inert C&D wastes in the Reporting Month.

10.7 The amount of wastes generated by the construction works of the Contract No. ND/2019/01, ND/2019/02, ND/2019/03, ND/2019/04, ND/2019/05, ND/2019/06 and ND/2019/07 during the reporting month are shown in Appendix R.

10.8 The Contractors are advised to minimize the wastes generated through recycling or reusing. All mitigation measures stipulated in the Updated EM&A Manual and waste management plans shall be fully implemented. The status of implementation of waste management and reduction measures are summited in Appendix Q.

Ecological Mitigation Measures – Creation of Long Valley Nature Park (LVNP)

10.9 From the findings of EIA Report, the area of Long Valley has been assessed as of high to very high ecological value and is the largest contiguous area of freshwater wetland habitats in Hong Kong. To safeguard the ecological value of Long Valley, about 37 hectares of land in Long Valley has been proposed to develop into Long Valley Nature Park (LVNP) for conserving and enhancing the ecologically important environment as well as for compensation of the wetland loss due to the NDA development.

10.10 LVNP is developed according to approved Habitat Creation and Management Plan (HCMP) submitted under EP-468/2013/A. The HCMP provides a framework and specifications for development and management of the LVNP and guides the development to maintain and enhance the 37ha of low-lying wetland habitats.

10.11 Regarding to the design, the zoning of land use in the LVNP is intended to maintain the existing mosaic pattern of wet and dry agriculture, while controlling the activities that could potentially disturb target habitats and species. The LVNP will divide into three broad zones of land use as below:

• Biodiversity Zone of about 21 hectares largely designated for biodiversity conservation through cultivation of specified crops and habitat management.

• Agricultural Zone of about 11 hectares designated for commercially focuses crop production and eco-friendly agricultural practice for farming.

• Visitor Zone of about 5 hectares designed to accommodate visitors as well as storage and other facilities and for educational purposes.

10.12 The construction of the LVNP started in late 2019 and is expected to be completed in 2023. During construction period, the progress of construction and wetland enhancement works are under observation by different stakeholders including AFCD and green groups. Close communication between AFCD and CEDD are conducted to exchange views on conservation, restoration and management of habitats as well as on the planning and design of the park. Also, advices from green groups, Hong Kong Bird Watching Society (HKBWS) and The Conservancy Association (CA), are taken on habitat management of Long Valley and potential effects on habitat and wildlife of each individual work conducted in Long Valley. Regular meeting are held monthly on 29^th October 2021 in the reporting month to share the progress of LVNP with different stakeholders, including CEDD, AFCD, CA, HKBWS, Contractor, ET, IEC and farmers.

10.13 Proposals on wetland creation and restoration, dry agricultural land creation, pond creation, water treatment wetland and design of irrigation channel are submitted by the Contractor to achieve the objectives stated in HCMP and accepted by the Engineer with consent from AFCD before implementation. The Contractor will consult with the stakeholders for recommendations and suggestions on mitigation measures to minimise the environmental impacts arising from construction works. The progress of works will be arranged to minimise impacts to avifauna and maintain the habitat for avifauna. The photographic records of site activities in LVNP are presented in Table 10.5.

Table 10.5 Photographic Records of Site Activities in LVNP