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	5, 12, 19 and 28 Dec 23	6, 14, 20 and 29 Dec 23	8, 15, 19 and 27 Dec 23	7, 12, 21 and 28 Dec 23	4, 14, 18 and 27 Dec 23	N/A	1, 8, 15, 22 and 29 Dec 23
Joint Site Audit with representative of the Supervisor’s Representative, the Contractor and IEC	12 Dec 23	29 Dec 23	19 Dec 23	12 Dec 23	14 Dec 23	N/A	15 Dec 23

Remarks: The weekly site inspection for ND/2019/06 has been terminated starting from 19/10/2023 since the termination proposal was approved by EPD on the same day.

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. Any outstanding and recurrence deficiencies are presented in Table 10.3.

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. However, in June 2023, more defects were found during the handover inspection so the rectification works were undertaken until July 2023 when all works were completed.

10.5 The weekly site inspection and EM&A Reporting for ND/2019/06 were maintained until the termination proposal for ND/2019/06 has been endorsed by the IEC (17 Aug 23), the Engineer (26 Aug 23) and the Project Proponent (19 Sep 23) followed by approval from EPD (19 Oct 23) in accordance. The procedure for termination proposal for ND/2019/06 is in accordance with section 15.4.2 of updated EM&A Manual.

Table 10.2 Observations and Recommendations during Site Audits

Parameters	Date	Observations and Recommendations	Follow-up
Contract No.: ND/2019/01
*Water Quality*	19/12/2023	The litter in RC2 at Portion 1B should be cleared. RC2 should be maintained properly.	Improvement/Rectification was observed during follow-up audit session on 28 Dec 2023.
*Air Quality*	05/12/2023	Provide impervious sheeting for the dusty stockpile at portion 2.	Improvement/Rectification was observed during follow-up audit session on 12 Dec 2023.
	05/12/2023	Provide valid NRMM label for the generator at portion 5.	Improvement/Rectification was observed during follow-up audit session on 12 Dec 2023.
	12/12/2023	Review and enhance the condition of hydroseeding at Pak Shek Au.	Item remarked as 231219-R02. Follow-up action is needed to be review.
	19/12/2023		Improvement/Rectification was observed during follow-up audit session on 28 Dec 2023.
	19/12/2023	Review and enhance the condition of hydroseeding at Portion 1C.	Improvement/Rectification was observed during follow-up audit session on 28 Dec 2023.
*Waste / Chemical Management*	05/12/2023	Keep clean and tidy for the portion 9b.	Improvement/Rectification was observed during follow-up audit session on 12 Dec 2023.
*Waste / Chemical Management*	12/12/2023	Fell trees and yard waste should be cleared at Pak Shek Au.	Improvement/Rectification was observed during follow-up audit session on 19 Dec 2023.
*Landscape and Visual*	12/12/2023	Tree protection zone should be provided for the retained trees at Portion 11b.	Improvement/Rectification was observed during follow-up audit session on 19 Dec 2023.
*Noise*	28/12/2023	The NEL of the air compressor at Portion 8a should be displayed.	Follow-up action is needed to be reported in the following month.
Contract No.: ND/2019/02
*Water Quality***	29/11/2023	Provide maintenance for the water mitigation measure to prevent surface runoff.	Improvement/Rectification was observed during follow-up audit session on 6 Dec 2023.
	29/11/2023	Provide maintenance for the sandbags to prevent muddy water/ debris discharge onto cycling track.	Improvement/Rectification was observed during follow-up audit session on 6 Dec 2023.
	29/11/2023	Provide maintenance to the concrete bund to prevent wheel-washing wastewater discharge.	Item remarked as 231206-R02. Follow-up action is needed to be review.
	06/12/2023		Item remarked as 231214-R02. Follow-up action is needed to be review.
	14/12/2023		Improvement/Rectification was observed during follow-up audit session on 20 Dec 2023.
	29/11/2023	Exposed slope at Portion 5 should be properly covered by tarpaulin sheets.	Improvement/Rectification was observed during follow-up audit session on 6 Dec 2023.
	29/11/2023	Silt accumulating in the nullah near the water outlet at the material storage should be cleared continuously. Contractor was also reminded to enhance water mitigation measures to prevent further accumulation of silt.	Item remarked as 231206-R03. Follow-up action is needed to be review.
	06/12/2023		Item remarked as 231214-R03. Follow-up action is needed to be review.
	14/12/2023		Item remarked as 231220-R02. Follow-up action is needed to be review.
	20/12/2023		Item remarked as 231229-R02. Follow-up action is needed to be review.
	29/12/2023		Follow-up action is needed to be reported in the following month.
	29/11/2023	Muddy water in Portion 11 should be cleared immediately to avoid overflow.	Improvement/Rectification was observed during follow-up audit session on 6 Dec 2023.
	29/11/2023	Leakage of muddy water was observed at Portion 4. Contractor was reminded to repair the drainage system.	Improvement/Rectification was observed during follow-up audit session on 6 Dec 2023.
	29/11/2023	Leakage of untreated water was observed. Contractor was reminded to review the water treatment system of Portion 5.	Improvement/Rectification was observed during follow-up audit session on 6 Dec 2023.
	06/12/2023	The channel should be properly blocked to prevent contamination.	Improvement/Rectification was observed during follow-up audit session on 14 Dec 2023.
	06/12/2023	Provide maintenance to sandbags to prevent muddy water/ debris discharge in river.	Improvement/Rectification was observed during follow-up audit session on 14 Dec 2023.
	06/12/2023	Regular cleaning of the garbage in Portion 11 should be conducted.	Improvement/Rectification was observed during follow-up audit session on 14 Dec 2023.
	14/12/2023	Enhance the mitigation measures to prevent waste or surface runoff for the discharge point of Portion 1.	Item remarked as 231220-R04. Follow-up action is needed to be review.
	20/12/2023		Item remarked as 231229-R03. Follow-up action is needed to be review.
	29/12/2023		Follow-up action is needed to be reported in the following month.
	20/12/2023	Provide maintenance to impervious sheeting on the exposed slope at Portion 5.	Item remarked as 231229-R04. Follow-up action is needed to be review.
	29/12/2023		Follow-up action is needed to be reported in the following month.
	20/12/2023	Accumulated ground water should be pumped out to wastewater treatment facilities prior to discharge.	Improvement/Rectification was observed during follow-up audit session on 29 Dec 2023.
	20/12/2023	Provide impervious sheeting for the exposed slope at Portion 4.	Improvement/Rectification was observed during follow-up audit session on 29 Dec 2023.
	29/12/2023	Contractor was reminded to ensure the vehicles are properly cleaned of dirt and dust before leaving the site.	Follow-up action is needed to be reported in the following month.
*Air Quality*	14/12/2023	Provide impervious sheeting for the exposed slope at Portion 4.	Item remarked as 231220-R03 (Water Quality). Follow-up action is needed to be review.
	20/12/2023	Exposed works sites and haul roads should be sprayed with water as dust suppression.	Improvement/Rectification was observed during follow-up audit session on 29 Dec 2023.
	29/12/2023	Dusty stockpile and exposed slopes should be covered with tarpaulin sheets.	Follow-up action is needed to be reported in the following month.
*Landscape and Visual*	29/11/2023	The removed green hoarding along Sheung Yue River due to the construction works should be replaced and maintained properly as soon as possible.	Item remarked as 231206-R01. Follow-up action is needed to be review.
	06/12/2023		Item remarked as 231214-R01. Follow-up action is needed to be review.
	14/12/2023		Item remarked as 231220-R01. Follow-up action is needed to be review.
	20/12/2023		Item remarked as 231229-R01. Follow-up action is needed to be review.
	29/12/2023		Follow-up action is needed to be reported in the following month.
*Waste / Chemical Management*	29/11/2023	Provide drip tray for chemical/fuel container at visiting center.	Improvement/Rectification was observed during follow-up audit session on 6 Dec 2023.
	29/11/2023	Accumulation of general refuse should be avoided at the riverbank of Portion 11.	Item remarked as 231206-R04. Follow-up action is needed to be review.
	06/12/2023		Improvement/Rectification was observed during follow-up audit session on 14 Dec 2023.
	14/12/2023	Keep site clean and tidy at Portion 1.	Improvement/Rectification was observed during follow-up audit session on 20 Dec 2023.
*Permit / Licences*	20/12/2023	Construction Noise Permit should be available for inspection at site entrance.	Improvement/Rectification was observed during follow-up audit session on 29 Dec 2023.
Contract No.: ND/2019/03
*Water Quality*	08/12/2023	Contractor was reminded to ensure vehicles are properly washed before leaving the site.	Improvement/Rectification was observed during follow-up audit session on 15 Dec 2023.
*Waste/Chemical Management*	15/12/2023	Provide drip tray for chemical/fuel containers.	Improvement/Rectification was observed during follow-up audit session on 19 Dec 2023.
Contract No.: ND/2019/04
*Water Quality*	12/12/2023	Blue hoses should be kept away from the riverside near A3-03.	Item remarked as 231221-R02. Follow-up action is needed to be review.
*Water Quality*	21/12/2023		Improvement/Rectification was observed during follow-up audit session on 28 Dec 2023.
*Ecology*	30/11/2023	The dull green barrier of the 10m buffer zone near Siu Hang San Tsuen should be maintained properly and regularly.	Item remarked as 231207-R02. Follow-up action is needed to be review.
	07/12/2023		Improvement/Rectification was observed during follow-up audit session on 12 Dec 2023.
	30/11/2023	The silt curtain next to A3-01 should be maintained properly	Item remarked as 231207-R03. Follow-up action is needed to be review.
	07/12/2023		Improvement/Rectification was observed during follow-up audit session on 12 Dec 2023.
	28/12/2023	The silt curtain at Bridge F should be maintained regularly and properly.	Follow-up action is needed to be reported in the following month.
*Air Quality*	30/11/2023	Stockpile of dusty material at A1-03 and Portion K should be covered by impervious sheets properly.	Improvement/Rectification was observed during follow-up audit session on 7 Dec 2023.
	07/12/2023	Exposed site area should be watered regularly as dust suppression at A1-03 and A3-03.	Improvement/Rectification was observed during follow-up audit session on 12 Dec 2023.
	12/12/2023	Dusty stockpile should be covered by impervious sheets properly at Portion K.	Item remarked as 231221-R01. Follow-up action is needed to be review.
	21/12/2023	Dusty stockpile at Portion K should be covered properly or watered regularly as dust suppression.	Improvement/Rectification was observed during follow-up audit session on 28 Dec 2023.
*Waste / Chemical Management*	07/12/2023	Accumulation of general refuse should be avoided at A1-05.	Improvement/Rectification was observed during follow-up audit session on 12 Dec 2023.
Contract No.: ND/2019/05
*Waste / Chemical Management*	04/12/2023	The construction site at On Lok Garden should be kept clean and tidy generally. The contractor was reminded to clear the waste regularly.	Improvement/Rectification was observed during follow-up audit session on 14 Dec 2023.
*Water Quality*	18/12/2023	Litter in the temporary drainage at B1-02a should be cleared and maintained properly.	Improvement/Rectification was observed during follow-up audit session on 27 Dec 2023.
Contract No.: ND/2019/06
--	--	--	--
Contract No.: ND/2019/07
*Waste/Chemical Management*	22/12/2023	Ensure that the drip tray remains clear to maintain adequate capacity.	Improvement/Rectification was observed during follow-up audit session on 29 Dec 2023.

Table 10.3 Summary Table for the Outstanding item(s) in the reporting month

Contract No.

Outstanding deficiencies since last reporting month

(Nov 2023)

Deficiencies recorded

in the reporting month

(Dec 2023)

Total deficiencies (including repeated deficiencies) in the reporting month

Deficiencies rectified in the reporting month

Outstanding deficiencies

need to be Follow-up in the next month

(Jan 2024)

Total

outstanding deficiencies

W/C

L&V

P/L

W/C

L&V

P/L

ND/2019/01

ND/2019/02

ND/2019/03

ND/2019/04

ND/2019/05

ND/2019/06*

ND/2019/07

Legends:

A = Air Quality

N = Construction Noise Impact

W = Water Quality

W/C = Waste / Chemical Management

CH = Cultural Heritage

L&V = Landscape & Visual

E = Ecology

P/L = Permit / Licences

* The weekly site inspection for ND/2019/06 has been terminated starting from 19/10/2023 since the termination proposal was approved by EPD on the same day.

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 10.4.

Table 10.4 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 10.5 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.