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

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, 17, 23 and 30 Aug 22

3, 10, 19, 24 and 31 Aug 22

5, 12, 16 and 26 Aug 22

4, 11, 16 and 24 Aug 22

1, 8, 18, 22 and 29 Aug 22

4, 11, 16 and 24 Aug 22

5, 12, 19 26 and 31 Aug 22

Joint Site Audit with representative of the Supervisor’s Representative, the Contractor and IEC

17 Aug 22

19 Aug 22

16 Aug 22

16 Aug 22

18 Aug 22

N/A

12 Aug 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 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. 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 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

 

-

-

-

-

Contract No.: ND/2019/02

Landscape and Visual

27/07/2022

To clarify the nearly fallen tree status.

Item Remarked as 220803-R01. Follow-up action is needed to be review.

03/08/2022

Item Remarked as 220810-R01. Follow-up action is needed to be review.

10/08/2022

To properly manage and maintain tree protection zone for retained / transplanted trees.

Improvement/Rectification was observed during follow-up audit session on 19 August 2022.

Air Quality

31/08/2022

Dusty material should be removed or covered entirely.

Follow-up action is needed to be reported in the following month.

Waste / Chemical Management

10/08/2022

To provide drip tray for chemical storage.

Item Remarked as 220819-R01. Follow-up action is needed to be review.

19/08/2022

Drip tray should be provided for chemical / fuel containers.

Improvement/Rectification was observed during follow-up audit session on 24 August 2022.

19/08/2022

Unknown oil should be avoided.

Improvement/Rectification was observed during follow-up audit session on 24 August 2022.

Water Quality

27/07/2022

To enhance mitigation measures to prevent surface runoff into the Sheung Yue River near 1.43.7.

Item Remarked as 220803-R02. Follow-up action is needed to be review.

03/08/2022

Item Remarked as 220810-R03. Follow-up action is needed to be review.

10/08/2022

To maintain water mitigation measures next to the water-filled barriers (geotextile & sandbags) at good functional condition.

Improvement/Rectification was observed during follow-up audit session on 19 August 2022.

19/08/2022

Enhance the mitigation measure to prevent surface runoff discharge to Sheung Yue River.

Item Remarked as 220824-R01. Follow-up action is needed to be review.

24/08/2022

To enhance mitigation measures to prevent surface runoff into the Sheung Yue River.

Improvement/Rectification was observed during follow-up audit session on 31 August 2022.

Contract No.: ND/2019/03

Air Quality

29/07/2022

Dusty debris were observed at Yin Kong Road. Contractor was reminded to clear the dusty debris immediately.

Improvement/Rectification was observed during follow-up audit session on 5 August 2022.

26/08/2022

Dusty debris were observed at the site exit of Yin Kong. Contractor was reminded to clear the dusty debris immediately.

Follow-up action is needed to be reported in the following month.

Water Quality

26/08/2022

To clear the wheel-washing bay regularly.

Follow-up action is needed to be reported in the following month.

Contract No.: ND/2019/04

Water Quality

04/08/2022

Covering of stockpile is required to minimize the mudding runoff during rainstorm.

Item Remarked as 220811-R01. Follow-up action is needed to be review.

11/08/2022

Item Remarked as 220816-R01. Follow-up action is needed to be review.

16/08/2022

Item Remarked as 220824-R01. Follow-up action is needed to be review.

24/08/2022

Follow-up action is needed to be reported in the following month.

16/08/2022

To enhance mitigation measure to prevent muddy runoff during wet season.

Improvement/Rectification was observed during follow-up audit session on 24 August 2022.

Contract No.: ND/2019/05

Waste / Chemical Management

01/08/2022

Soil was observed at the slope surface (Portion 2) which will direct discharge to Ma Wat River. Contractor was reminded to clear the soil.

Improvement/Rectification was observed during follow-up audit session on 8 August 2022.

18/08/2022

Should enhance mitigation measures to prevent oil leakage.

Improvement/Rectification was observed during follow-up audit session on 22 August 2022.

Water Quality

08/08/2022

Sand bag barriers were not surrounding carefully which lead the leakage of muddy water. Contractor was reminded to clear the muddy water, place the sand bags properly and effectively.

Improvement/Rectification was observed during follow-up audit session on 18 August 2022.

22/08/2022

Enhance the mitigation measure to avoid muddy water discharging to public drainage and Ma Wat River. (Portion 2 and 9)

Improvement/Rectification was observed during follow-up audit session on 29 August 2022.

29/08/2022

Enhance the mitigation measure to avoid muddy water discharging to public drainage and Ma Wat River. (Portion 9)

Follow-up action is needed to be reported in the following month.

Air Quality

22/08/2022

Provide impervious sheeting for the stockpile of dusty materials.

Improvement/Rectification was observed during follow-up audit session on 29 August 2022.

Contract No.: ND/2019/06

--

--

--

--

Contract No.: ND/2019/07

 

--

--

--

--

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 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

2.9

20220830_093258  20220802_093333

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

20220802_093934  20220823_093804

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

WhatsApp Image 2022-09-08 at 4.42.28 PMWhatsApp Image 2022-09-08 at 4.42.28 PM (1) 

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

20220824_100837  20220831_102725

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

P_20220808_142841  20220818_101846

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

20220714_153835  20220714_153722

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

10.5       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

20220823_094145

Hard paved exposed slope surface

20220817_140646

Hydroseeding for slope area

ND/2019/02

P_20220819_094308

Hard paved exposed haul road

DSC_4695

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

20220616_145416

Deployment of silt curtain around works area in Ng Tung River

ND/2019/05

P_20220808_141427

Covering dusty stockpile

20220620_143449

Provision of sand bags around works area

ND/2019/07

P_20220819_142810

Covering exposed slope surface with tarpaulin

WhatsApp Image 2022-06-10 at 2

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

Hard paved exposed haul road

Solid and Liquid Waste Management Status

10.6       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.

10.7       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.

10.8       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)

10.9       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.

10.10    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.

10.11   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.

10.12   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. A regular meeting was held monthly (on 26 August 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 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 10.5       Photographic Records of Site Activities in LVNP

WhatsApp Image 2022-08-09 at 1.18.44 AM (1)

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

WhatsApp Image 2022-06-08 at 4.05.59 PM (3)

Open water Habitat

WhatsApp Image 2022-07-08 at 12.12.02 AM (1)

Open water Habitat

Creation of wetland with designated habitat for biodiversity conservation

WhatsApp Image 2022-09-08 at 4.43.51 PM (6)WhatsApp Image 2022-09-08 at 4.43.51 PM (5)

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

WhatsApp Image 2022-09-08 at 4.43.51 PM (4)WhatsApp Image 2022-09-08 at 4.43.51 PM (3)

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

WhatsApp Image 2022-09-08 at 4.43.51 PM

Provision of bird island (hidden area)

WhatsApp Image 2022-09-08 at 4.43.51 PM (1)

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

WhatsApp Image 2022-09-08 at 4.43.51 PM (2)

Construction of storage sheds for farmers

DSCN0777

An Ardeola bacchus was recorded

WhatsApp Image 2022-09-08 at 4.43.50 PM

Wet agricultural land

Adrian001

Provision of noise barrier for noisy works in Long Valley