Table 10.2 Observations and Recommendations during Site Audits

Parameters	Date	Observations and Recommendations	Follow-up
Contract No.: ND/2019/01
*Water Quality*	26/09/2023	Water pump failure causing muddy water overflow within the site boundary near Pak Shek Au should be fixed immediately.	Item remarked as 231003-R02. Follow-up action is needed to be review.
	03/10/2023	Enhance the trench surrounding the site at Pak Shek Au to prevent muddy runoff discharge.	Improvement/Rectification was observed during follow-up audit session on 11 Oct 2023.
	11/10/2023	Review the capacity of the sump pit at Portion 9b.	Improvement/Rectification was observed during follow-up audit session on 17 Oct 2023.
	17/10/2023	Temporary drainage was blocked by concrete paving. Contractor was reminded to remove such paving and ensure the proper function of temporary drainage system.	Improvement/Rectification was observed during follow-up audit session on 24 Oct 2023.
	26/09/2023	Barricade with geotextile should be installed surrounding the channels at RC3, enhance the adequacy of water pump usage, increase the capacity of temporary sedimentation pond, clear the U channel and ensure the sandbag barrier is fully enclosed at Portion 1B and 1C.	Item was remarked as 231003-R01a to R01c for easy reference. Follow-up action is needed to be review.
	03/10/2023	Enhance the adequacy of water pump usage.	Item was remarked as 231011-R02 for easy reference. Follow-up action is needed to be review.
	03/10/2023	Barricade with geotextile should be installed surrounding the channels at RC3.
	03/10/2023	The capacity of temporary sedimentation pond should be increased.
	11/10/2023	Mitigation measures rectification works at RC2 and RC3 were noted. The performance and efficiency of these works will be kept in view in the future inspections.	Item was remarked as 231017-R01 for easy reference. Follow-up action is needed to be review.
	17/10/2023		Improvement/Rectification was observed during follow-up audit session on 24 Oct 2023.
	24/10/2023	The bare soil next to the nullah at Portion 1B should be properly covered with tarpaulin sheet.	Improvement/Rectification was observed during follow-up audit session on 31 Oct 2023.
	24/10/2023	The inactive exposed slope at Pak Shek Au should be properly covered with tarpaulin sheet.	Improvement/Rectification was observed during follow-up audit session on 31 Oct 2023.
	24/10/2023	The deposited sediment at the drainage channel at RC3 should be regularly cleared.	Improvement/Rectification was observed during follow-up audit session on 31 Oct 2023.
*Air Quality*	26/09/2023	The Contractor was reminded to provide sufficient water-spraying to enhance dust suppression measures.	Improvement/Rectification was observed during follow-up audit session on 3 Oct 2023.
	24/10/2023	No enclosure on 3 sides and top shelter was provided for the dusty (cement) generation works and no cover for the temporary storage of cement bags at Portion 8A. The Contractor was reminded to provide appropriate dust suppression measures for these works.	Improvement/Rectification was observed during follow-up audit session on 31 Oct 2023.
	24/10/2023	The sediment at the paved haul road should be cleared (Portion 1B).	Improvement/Rectification was observed during follow-up audit session on 31 Oct 2023.
	24/10/2023	The bare soil next to the nullah at Portion 1B should be properly covered with tarpaulin sheet.	Improvement/Rectification was observed during follow-up audit session on 31 Oct 2023.
	24/10/2023	The inactive exposed slope at Pak Shek Au should be properly covered with tarpaulin sheet.	Improvement/Rectification was observed during follow-up audit session on 31 Oct 2023.
	31/10/2023	Dusty debris was observed at 9b exit. Contractor was reminded to clean it ASAP.	Follow-up action is needed to be reported in the following month.
	31/10/2023	Cover the temporary storage of cement bags at Pak Shek Au.	Follow-up action is needed to be reported in the following month.
*Waste / Chemical Management*	31/10/2023	Provide drip tray for the chemical / fuel containers at Portion 8A.	Follow-up action is needed to be reported in the following month.
Contract No.: ND/2019/02
*Water Quality***	27/09/2023	Drainage system should be maintained properly along the riverside and VC, mitigation measures including fully enclosed sand bag barrier should be implemented.	Item remarked as 231004-R03. Follow-up action is needed to be review.
	04/10/2023	Collected waste water should be properly diverted to waste water treatment facilities.	Item remarked as 231011-R03. Follow-up action is needed to be review.
	11/10/2023		Item remarked as 231018-R03. Follow-up action is needed to be review.
	18/10/2023		Improvement/Rectification was observed during follow-up audit session on 27 Oct 2023.
	27/09/2023	Exposed slope surface should be covered by tarpaulin sheets properly.	Improvement/Rectification was observed during follow-up audit session on 4 Oct 2023.
	04/10/2023	Water mitigation measures should be provided to prevent material from the stockpile from falling into Shek Sheung River.	Improvement/Rectification was observed during follow-up audit session on 11 Oct 2023.
	18/10/2023	Accumulated muddy silt were observed under wastewater treatment facilities. Contractor are reminded to provide water mitigation measures to ensure that there are no muddy runoff discharge into Sheung Yue River.	Improvement/Rectification was observed during follow-up audit session on 27 Oct 2023.
	04/10/2023	Vehicles should be properly cleaned before leaving the site.	Item remarked as 231011-R04. Follow-up action is needed to be review.
	11/10/2023		Improvement/Rectification was observed during follow-up audit session on 18 Oct 2023.
	27/10/2023	Contractor was reminded to enhance the existing mitigation measures to prevent muddy discharge outside of site boundary at the exit next to the cycling track.	Follow-up action is needed to be reported in the following month.
	27/10/2023	Wheel-washing facilities should be provided and used at vehicle exits at Ho Sheung Heung and Dills Corner site area to ensure that vehicles are cleaned before leaving the site.	Follow-up action is needed to be reported in the following month.
*Ecology*	27/09/2023	The silt curtain under the bridge should be maintained properly and regularly.	Item remarked as 231004-R02. Follow-up action is needed to be review.
	04/10/2023		Improvement/Rectification was observed during follow-up audit session on 11 Oct 2023.
	11/10/2023	Small gap between the silt curtains should be covered by geotextile.	Item remarked as 231018-R02. Follow-up action is needed to be review.
	18/10/2023		Improvement/Rectification was observed during follow-up audit session on 27 Oct 2023.
*Landscape and Visual*	27/09/2023	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 231004-R01. Follow-up action is needed to be review.
	04/10/2023		Item remarked as 231011-R01. Follow-up action is needed to be review.
	11/10/2023		Item remarked as 231018-R01. Follow-up action is needed to be review.
	18/10/2023		Item remarked as 231027-R01. Follow-up action is needed to be review.
	27/10/2023		Follow-up action is needed to be reported in the following month.
	27/09/2023	Tree protection zone should be maintained properly and regularly. / Construction works of the VC exceeding site boundary causing damage to trees within 2m from site boundaries.	Improvement/Rectification was observed during follow-up audit session on 4 Oct 2023.
*Waste / Chemical Management*	27/10/2023	Contractor was reminded to clear the chemical spillage.	Follow-up action is needed to be reported in the following month.
*Permit / Licences*	27/10/2023	The Environmental Permit should be displayed on site ay Dills Corner site area.	Follow-up action is needed to be reported in the following month.
Contract No.: ND/2019/03
*Air Quality*	29/09/2023	Dusty stockpiles should be covered with tarpaulin sheets.	Item remarked as 231006-R01. Follow-up action is needed to be review.
	06/10/2023		Item remarked as 231013-R01. Follow-up action is needed to be review.
	13/10/2023		Improvement/Rectification was observed during follow-up audit session on 17 Oct 2023.
*Water Quality*	29/09/2023	Provide adequate wheel-washing facilities for each vehicle exits.	Item remarked as 231006-O01. Follow-up action is needed to be review.
	06/10/2023		Item remarked as 231013-O01. Follow-up action is needed to be review.
	13/10/2023		Item remarked as 231017-O01. Follow-up action is needed to be review.
	17/10/2023		Improvement/Rectification was observed during follow-up audit session on 27 Oct 2023.
	29/09/2023	Provide sand bags to prevent muddy water discharge.	Improvement/Rectification was observed during follow-up audit session on 6 Oct 2023.
Contract No.: ND/2019/04
*Water Quality*	28/09/2023	All vehicles should be cleaned of earth, mud and debris before leaving the site.	Item remarked as 231005-R01. Follow-up action is needed to be review.
	05/10/2023		Item remarked as 231012-R01. Follow-up action is needed to be review.
	12/10/2023	Wheel washing facilities should be provided at every site exit.	Item remarked as 231018-R01. Follow-up action is needed to be review.
	18/10/2023		Item remarked as 231026-R01. Follow-up action is needed to be review.
	26/10/2023		Follow-up action is needed to be reported in the following month.
	28/09/2023	Water quality mitigation measures along Ng Tung River should be provided, e.g. sand bag barrier.	Improvement/Rectification was observed during follow-up audit session on 5 Oct 2023.
	18/10/2023	Mitigation measures should be enhanced to avoid surface runoff discharge into Ng Tung River.	Item remarked as 231026-R03. Follow-up action is needed to be review.
	26/10/2023		Follow-up action is needed to be reported in the following month.
*Ecology*	28/09/2023	Silt curtain at Bridge F should be fully enclosed.	Improvement/Rectification was observed during follow-up audit session on 5 Oct 2023.
*Air Quality*	28/09/2023	Sufficient water-spraying should be provided regularly.	Improvement/Rectification was observed during follow-up audit session on 5 Oct 2023.
	05/10/2023	Dusty stockpile should be covered by impervious sheeting or sprayed with water.	Improvement/Rectification was observed during follow-up audit session on 12 Oct 2023.
	05/10/2023	More than 20 bags of cement should be covered properly.	Improvement/Rectification was observed during follow-up audit session on 12 Oct 2023.
*Noise*	28/09/2023	Noise barrier should be maintained properly.	Item remarked as 231005-R02 Follow-up action is needed to be review.
	05/10/2023		Item remarked as 231012-R02 Follow-up action is needed to be review.
	12/10/2023		Item remarked as 231018-R02 Follow-up action is needed to be review.
	18/10/2023		Item remarked as 231026-R02 Follow-up action is needed to be review.
	26/10/2023		Follow-up action is needed to be reported in the following month.
*Waste / Chemical Management*	05/10/2023	Drip tray should be provided with adequate capacity.	Improvement/Rectification was observed during follow-up audit session on 12 Oct 2023.
*Waste / Chemical Management*	26/10/2023	General refuse should be disposed of regularly and properly.	Follow-up action is needed to be reported in the following month.
Contract No.: ND/2019/05
*Water Quality*	26/09/2023	Blue hose attached to water pump should be kept away from the riverside.	Improvement/Rectification was observed during follow-up audit session on 3 Oct 2023.
	10/10/2023	Provide maintenance of impervious sheeting for the exposed slope at Portion 3.	Improvement/Rectification was observed during follow-up audit session on 19 Oct 2023.
	19/10/2023	Drainage management of the E2-02 exit should be enhanced to avoid surface runoff discharge into inappropriate watercourse.	Item remarked as 231024-R03 Follow-up action is needed to be review.
	24/10/2023		Improvement/Rectification was observed during follow-up audit session on 30 Oct 2023.
*Waste / Chemical Management*	03/10/2023	Drip tray for the chemical / fuel containers should be provided at Portion 2.	Improvement/Rectification was observed during follow-up audit session on 10 Oct 2023.
	10/10/2023	Provide drip tray for chemical / fuel containers at Portion 3.	Improvement/Rectification was observed during follow-up audit session on 19 Oct 2023.
	10/10/2023	Keep clean and tidy at Portion 3	Item remarked as 231019-R01 Follow-up action is needed to be review.
	19/10/2023		Item remarked as 231024-R01 Follow-up action is needed to be review.
	24/10/2023		Item remarked as 231030-R01 Follow-up action is needed to be review.
	30/10/2023		Follow-up action is needed to be reported in the following month.
*Air Quality*	19/10/2023	Faded NRMM label on the generator located at E2-02 should be replaced.	Improvement/Rectification was observed during follow-up audit session on 24 Oct 2023.
*Air Quality*	24/10/2023	Dusty stockpile should be covered properly, or removed from the area near the exit of E2-02.	Improvement/Rectification was observed during follow-up audit session on 30 Oct 2023.
Contract No.: ND/2019/06
--	--	--	--
Contract No.: ND/2019/07
*Air Quality*	06/10/2023	Dusty stockpile should be covered properly to avoid dust generation.	Improvement/Rectification was observed during follow-up audit session on 13 Oct 2023.
*Water Quality*	13/10/2023	Exposed slope surface should be covered properly to avoid surface ru noff.	Improvement/Rectification was observed during follow-up audit session on 20 Oct 2023.

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

Contract No.

Outstanding deficiencies since last reporting month

(Sep 2023)

Deficiencies recorded

in the reporting month

(Oct 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

(Nov 2023)

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

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.

Table 10.6 Photographic Records of Site Activities in LVNP

Continuing agricultural practice in existing farmland to maintain habitats in Long Valley

Open water Habitat

Creation of wetland with designated habitat for biodiversity conservation

Planting of paddy rice to provide foraging ground for Yellow-breasted Bunting

Enhancement of irrigation channel to provide reliable water source for farmland in Long Valley

Provision of bird island (hidden area)

Restoring of water flea pond to provide food source to water birds

Construction of storage sheds for farmers

A Himantopus himantopus was recorded

Wet agricultural land

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, 11, 17, 24 and 31 Oct 23	4, 11, 18 and 27 Oct 23	6, 13, 17 and 27 Oct 23	5, 12, 18 and 26 Oct 23	3, 10, 19, 24 and 30 Oct 23	5, 12 and 18 Oct 23	6, 13, 20 and 27 Oct 23
Joint Site Audit with representative of the Supervisor’s Representative, the Contractor and IEC	11 Oct 23	27 Oct 23	17 Oct 23	18 Oct 23	19 Oct 23	N/A	20 Oct 23

10 ENVIRONMENTAL SITE INSPECTION

Site Audits

Implementation Status of Environmental Mitigation Measures

Implementation Status of Water Quality Mitigation Measures

Solid and Liquid Waste Management Status

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