10 ENVIRONMENTAL SITE INSPECTION

Site Audits

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

Table 10.1 Summary of Site Audits

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	2, 9, 16, 23 and 31 May 23	3, 10, 17, 24 and 29 May 23	5, 12, 16 and 22 May 23	4, 11, 17 and 25 May 23	2, 8, 18, 22 and 29 May 23	4, 11, 17 and 25 May 23	5, 12, 19 and 25 May 23
Joint Site Audit with representative of the Supervisor’s Representative, the Contractor and IEC	31 May 23	29 May 23	16 May 23	17 May 23	18 May 23	N/A	19 May 23

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 the majority of outstanding works were also completed in April 2022 with defect rectification works remained. The outstanding installation works were the short-duration works which would be completed within 2 months during the 1-year defect correction period, originally estimated.

10.4 Due to problems in material deliveries from Mainland China in 2022, the completion date of the outstanding works would be extended to June 2023 tentatively.

10.5 ET would record the environmental deficiency, if any, for NDTWM (EP-475/2013/A) during the whole defect correction period under Contract ND/2019/04 site inspection and would email weekly those inspection records to the Project Team of Contract ND/2019/06 for information.

Table 10.2 Observations and Recommendations during Site Audits

Parameters	Date	Observations and Recommendations	Follow-up
Contract No.: ND/2019/01
*Waste/Chemical Management*	27/04/2023	General refuse should be disposed of properly and regularly.	Improvement/Rectification was observed during follow-up audit session on 2 May 2023.
Contract No.: ND/2019/02
*Water Quality***	03/05/2023	Exposed slopes on the side of the outlet next to Sheung Yue River should be covered with tarpaulin sheets.	Item remarked as 230510-R01. Follow-up action is needed to be review.
	10/05/2023		Improvement/Rectification was observed during follow-up audit session on 17 May 2023.
	17/05/2023	The excavated slope surface should be covered by impervious sheets.	Item remarked as 230524-R01. Follow-up action is needed to be review.
	24/05/2023	The exposed slope surface should be covered by impervious sheets.	Item remarked as 230529-R01. Follow-up action is needed to be review.
	29/05/2023	The exposed slope surface should be covered by tarpaulin sheets.	Follow-up action is needed to be reported in the following month.
Contract No.: ND/2019/03
*Air Quality*	28/04/2023	Dusty debris was observed at Yin Kong Road. Contractor was reminded to clear the dusty debris immediately.	Item remarked as 230505-O02. Follow-up action is needed to be review.
	05/05/2023		Item remarked as 230512-O02. Follow-up action is needed to be review.
	12/05/2023		Improvement/Rectification was observed during follow-up audit session on 16 May 2023.
	05/05/2023	Dusty stockpiles should be covered with tarpaulin sheets.	Item remarked as 230512-R03. Follow-up action is needed to be review.
	12/05/2023		Item remarked as 230516-R03. Follow-up action is needed to be review.
	16/05/2023		Item remarked as 230522-R02. Follow-up action is needed to be review.
	22/05/2023		Follow-up action is needed to be reported in the following month.
*Water Quality*	28/04/2023	Provide adequate wheel-washing facilities for each vehicle exits, suitable for the current temporary traffic arrangement, and ensure that vehicles are properly washed before leaving the site.	Item remarked as 230505-O01. Follow-up action is needed to be review.
	05/05/2023		Item remarked as 230512-O01. Follow-up action is needed to be review.
	12/05/2023		Item remarked as 230516-O01. Follow-up action is needed to be review.
	16/05/2023		Item remarked as 230522-O01. Follow-up action is needed to be review.
	22/05/2023		Follow-up action is needed to be reported in the following month.
*Waste / Chemical Management*	28/04/2023	Provide drip tray for chemical/fuel containers.	Item remarked as 230505-R01. Follow-up action is needed to be review.
	05/05/2023		Item remarked as 230512-R01. Follow-up action is needed to be review.
	12/05/2023		Item remarked as 230516-R01. Follow-up action is needed to be review.
	16/05/2023		Improvement/Rectification was observed during follow-up audit session on 22 May 2023.
*Landscape & Visual*	28/04/2023	Remove any construction material from tree protection zone.	Item remarked as 230505-R02. Follow-up action is needed to be review.
	05/05/2023		Item remarked as 230512-R02. Follow-up action is needed to be review.
	12/05/2023		Item remarked as 230516-R02. Follow-up action is needed to be review.
	16/05/2023		Item remarked as 230522-R01. Follow-up action is needed to be review.
	22/05/2023		Follow-up action is needed to be reported in the following month.
Contract No.: ND/2019/04
*Waste/Chemical Management*	11/05/2023	Prevent oil leakage from air compressors.	Improvement/Rectification was observed during follow-up audit session on 17 May 2023.
*Air Quality*	25/05/2023	The idle stockpile of dusty materials at Portion K should be covered properly with tarpaulin sheet.	Follow-up action is needed to be reported in the following month.
Contract No.: ND/2019/05
*Water Quality*	08/05/2023	To enhance water mitigation measures at D2-01 to prevent muddy water runoff go through the site surface and discharge to public access road e.g. sandbag barrier.	Improvement/Rectification was observed during follow-up audit session on 18 May 2023.
*Water Quality*	18/05/2023	The earth bunding at D2-02 should be fully enclosed to prevent muddy runoff from entering the river.	Improvement/Rectification was observed during follow-up audit session on 22 May 2023.
Contract No.: ND/2019/06
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Contract No.: ND/2019/07
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Implementation Status of Environmental Mitigation Measures

10.6 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 EPs 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/A	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.	^^[^1]
EP-467/2013/A	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.	^^[^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

Remark:

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

Implementation Status of Water Quality Mitigation Measures

10.7 The water quality mitigation measures detailed in the EIA Report and the Updated EM&A Manual 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

Watering the main haul road regularly.

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

10.8 Waste generated from Contract Nos. ND/2019/01, ND/2019/02, ND/2019/03, ND/2019/04, ND/2019/05 and ND/2019/07 included 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.

10.9 The amount of wastes generated by the construction works of the Contract Nos. 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.

10.10 The Contractors are advised to minimise 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)

10.11 Based on the findings of the 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.

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

10.13 Regarding the design, the zoning of land use in 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. LVNP will be divided 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.

10.14 The construction of LVNP started in late 2019 and was expected to be completed in 2023. During the construction period, the progress of construction and wetland enhancement works has been under observation by different stakeholders including AFCD and green groups. Close communication between AFCD and CEDD were conducted to exchange views on conservation, restoration and management of habitats as well as on the planning and design of the park. In addition, advices from green groups, Hong Kong Bird Watching Society (HKBWS) and The Conservancy Association (CA), have been taken on habitat management of Long Valley and potential effects on habitat and wildlife of each individual work conducted in Long Valley. The last meeting was held on 18 November 2022 to share the progress of LVNP with different stakeholders, including CEDD, AFCD, CA, HKBWS, Contractor, ET, IEC and farmers.

10.15 Proposals on wetland creation and restoration, dry agricultural land creation, pond creation, water treatment wetland and design of irrigation channel were submitted by the Contractor to achieve the objectives stated in HCMP and accepted by the Engineer with consent from AFCD before implementation. The Contractor would consult the stakeholders for recommendations and suggestions on mitigation measures to minimise the environmental impacts arising from construction works. The progress of works would 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.