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	3, 10, 18, 25 and 31 May 22	4, 11, 20 and 25 May 22	6, 13, 17 and 27 May 22	5, 11, 19 and 26 May 22	3, 10, 16, 23 and 31 May 22	5, 11, 19 and 26 May 22	6, 13, 20, and 27 May 22
Joint Site Audit with representative of the Supervisor’s Representative, the Contractor and IEC	18 May 22	20 May 22	17 May 22	11 May 22	16 May 22	N/A	20 May 22

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.

10.3 All construction activities with significant environmental impact undertaken by Contract No. ND/2019/06 was substantially completed in March 2022 and majority of outstanding works have also been completed in April 2022 with defect rectification works remain. The outstanding installation works are the short-duration works which will be completed within 2 months during the 1-year defect correction period. ET would record the environmental deficiency, if any for NDTWM (EP-475/2013/A) during the 1-year defect correction period under Contract ND/2019/04 site inspection and will email those inspection records to the Project Team of Contract ND/2019/06 for information weekly.

Table 10.2 Observations and Recommendations during Site Audits

	Date	Observations and Recommendations	Follow-up
Contract No.: ND/2019/01
--	--	--	--
Contract No.: ND/2019/02
*Water Quality*	11/05/2022	Enhance water mitigation measure to prevent surface runoff.	Improvement/Rectification was observed during follow-up audit session on 20 May 2022.
*Air Quality*	27/04/2022	Dusty haul road shall be watered regularly.	Improvement/Rectification was observed during follow-up audit session on 4 May 2022.
	11/05/2022	Vehicles shall be switched off while not in use.	Improvement/Rectification was observed during follow-up audit session on 20 May 2022.
	20/05/2022	Faded NRMM label shall be replaced.	Improvement/Rectification was observed during follow-up audit session on 25 May 2022.
*Waste / Chemical Management*	04/05/2022	Drip tray shall be provided for chemical storage.	Improvement/Rectification was observed during follow-up audit session on 11 May 2022.
*Ecology*	11/05/2022	The silt curtain should be properly surrounded the works and ensure it is intact.	Item was remarked as 220520-R01.
	20/05/2022	The silt curtain should be properly surrounded the works and ensure it is intact.	Item was remarked as 220525-R01.
	25/05/2022	The silt curtain should be properly surrounded the works and ensure it is intact.	Follow-up action is needed to be reported in the following month.
Contract No.: ND/2019/03
*Ecology*	17/05/2022	Green hoarding should be properly maintained.	Improvement/Rectification was observed during follow-up audit session on 27 May 2022.
Contract No.: ND/2019/04
*Water Quality*	25/04/2022	To review and modify the implemented mitigation measures to avoid the muddy surface runoff discharging to the river.	Improvement/Rectification was observed during follow-up audit session on 5 May 2022.
	25/04/2022	To enhance the drainage system and increase the capacity of de-silting facilities. (Portion H)	Item was remarked as 220505-R01.
	05/05/2022	To enhance the drainage system and increase the capacity of de-silting facilities. (Portion H)	Item was remarked as 220511-R01.
	11/05/2022	To enhance the drainage system and increase the capacity of de-silting facilities. (Portion H)	Improvement/Rectification was observed during follow-up audit session on 19 May 2022.
	05/05/2022	To clear the U-channel regularly.	Item was remarked as 220511-R01.
	11/05/2022	To clear the U-channel regularly.	Improvement/Rectification was observed during follow-up audit session on 19 May 2022.
	11/05/2022	To clear the muddy debris on piling platform.	Improvement/Rectification was observed during follow-up audit session on 19 May 2022.
*Ecology*	25/04/2022	The silt curtain should be properly surrounding the works at near bridge F and ensure it is intact.	Improvement/Rectification was observed during follow-up audit session on 5 May 2022.
Contract No.: ND/2019/05
*Air Quality*	25/04/2022	Dusty stockpile shall be covered properly by impervious sheeting.	Improvement/Rectification was observed during follow-up audit session on 3 May 2022.
	03/05/2022	Dusty stockpile should be covered by impervious sheeting.	Improvement/Rectification was observed during follow-up audit session on 10 May 2022.
	16/05/2022	Regulated machines should have NRMM label displayed properly.	Improvement/Rectification was observed during follow-up audit session on 23 May 2022.
*Waste / Chemical Management*	23/05/2022	Clear the oil stain on the ground.	Follow-up action is needed to be reported in the following month.
Contract No.: ND/2019/06
--	--	--	--
Contract No.: ND/2019/07
*Water Quality*	13/05/2022	To enhance mitigation measures to prevent muddy water overflow after rainstorms.	Improvement/Rectification was observed during follow-up audit session on 20 May 2022.

Implementation Status of Environmental Mitigation Measures

10.4 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.	^^[^1]
EP-467/2013/A	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.	^^[^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.	^^[^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.	^^[^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.	^^[^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.	^^[^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

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 haul road

Hard paved exposed slope surface

ND/2019/03

Hard paved exposed haul road

Regular clearance of water for wheel washing facility

ND/2019/04

Hard paved exposed slope surface

Deployment of silt curtain around works area in Ng Tung River

ND/2019/05

Covering dusty stockpile

Provision of sand bags around works area

ND/2019/07

Covering exposed slope surface with tarpaulin

De-silting waste water before discharge

Water quality mitigation measures for site(s) in operation phase, remaining defect works

ND/2019/06

Hard paved exposed haul road

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 and ND/2019/07 include inert construction and demolition (C&D) materials and non-inert C&D wastes in the Reporting Month. The site of ND/2019/06 was handed over to AFCD for operation since 4 April 2022.

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 and ND/2019/07 during the reporting month are shown in Appendix R. The site of ND/2019/06 was handed over to AFCD for operation since 4 April 2022.

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 13^th May 2022 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