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 |
||||||
|
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 |
1st, 8th, 16th,
22nd, 29th June 2021 |
2nd, 9th, 16th, 23rd, 30th
June 2021 |
4th, 11th, 18th, 22nd June
2021 |
3rd, 10th, 17th, 24th June
2021 |
9th, 15th, 21st, 28th June
2021 |
3rd, 10th, 17th, 24th, 30th
June 2021 |
4th, 9th, 18th, 25th June
2021 |
|
Joint Site Audit with representative of the Supervisor’s
Representative, the Contractor and IEC |
16th June
2021 |
23rd June
2021 |
22nd June 2021 |
17th June
2021 |
9th June
2021 |
10th June
2021 |
9th June
2021 |
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.
|
Table 10.2 Observations and Recommendations
during Site Audits |
||||
|
|
Date |
Observations and
Recommendations |
Follow-up |
|
|
Contract No.: ND/2019/01 |
||||
|
Water Quality |
1/6/2021 |
Contractor was reminded to enhance sediment
control measures with providing sand bags or desilting materials for
drainage (Portion 9b). |
Improvement/Rectification
was observed during follow-up audit session on 8 June 2021. |
|
|
22/6/2021 |
Regularly clear the sediment trapped by sand
bags in drainage at Portion 9C. |
Improvement/Rectification
was observed during follow-up audit session on 29 June 2021. |
||
|
Waste/ Chemical Management |
1/6/2021 |
Contractor was reminded to stopper the drip tray
to avoid any chemical leakage. (Portion 9b) |
Improvement/Rectification
was observed during follow-up audit session on 8 June 2021. |
|
|
29/6/2021 |
Provide drip tray for the chemical containers at
Portion 6a. |
Follow-up
action is needed to be reported in the following month. |
||
|
Landscape & Visual |
8/6/2021 |
To provide tree protection zone and remove the
construction materials from the zone at Potion 6A. |
Improvement/Rectification
was observed during follow-up audit session on 16 June 2021. |
|
|
Contract
No.: ND/2019/02 |
||||
|
Air Quality |
9/6/2021 |
To keep public road near site entrance clean and
free of dust. |
Item
was remarked as 210616-R01. Follow-up action is needed to be reviewed. |
|
|
16/6/2021 |
To keep public road near site entrance clean and
free of dust. |
Improvement/Rectification
was observed during follow-up audit session on 23 June 2021. |
||
|
30/6/2021 |
NRMM Label was observed faded, Contractor was
reminded to replace the NRMM Label. |
Follow-up
action is needed to be reported in the following month. |
||
|
Construction Noise Impact |
9/6/2021 |
Compressor should be operated with doors closed. |
Improvement/Rectification
was observed during follow-up audit session on 16 June 2021. |
|
|
30/6/2021 |
Compressor should be operated with doors closed. |
Follow-up
action is needed to be reported in the following month. |
||
|
Water Quality |
26/5/2021 |
Properly maintain the drainage system for
discharging treated water to proper storm water drain. |
Item
was remarked as 210602-R01. Follow-up action is needed to be reviewed. |
|
|
2/6/2021 |
Properly maintain the drainage system for
discharging treated water to proper storm water drain. |
Item
was remarked as 210609-R01. Follow-up action is needed to be reviewed. |
||
|
9/6/2021 |
Properly maintain the drainage system for
discharging treated water to proper storm water drain. |
Improvement/Rectification
was observed during follow-up audit session on 16 June 2021. |
||
|
30/6/2021 |
To prevent muddy water discharge into storm
drain. |
Follow-up
action is needed to be reported in the following month. |
||
|
Waste/ Chemical Management |
26/5/2021 |
To maintain the drip tray well and clear the
stagnant water. |
Improvement/Rectification
was observed during follow-up audit session on 2 June 2021. |
|
|
Contract No.: ND/2019/03 |
||||
|
Air Quality |
18/6/2021 |
Valid NRMM Label should be displayed on the regulated
machines. |
Improvement/Rectification
was observed during follow-up audit session on 22 June 2021. |
|
|
Landscape & Visual |
28/5/2021 |
Ropes on the retained tree shall be removed. |
Item
was remarked as 210604-R01. Follow-up action is needed to be reviewed. |
|
|
4/6/2021 |
Ropes on the retained tree shall be removed. |
Improvement/Rectification
was observed during follow-up audit session on 11 June 2021. |
||
|
Contract No.: ND/2019/04 |
||||
|
Construction Noise Impact |
27/5/2021 |
Compressor should be operated with doors closed. |
Improvement/Rectification
was observed during follow-up audit session on 3 June 2021. |
|
|
Water Quality |
27/5/2021 |
To review the capacity of the sump pit and
wastewater should be directed to sewage treatment facility before discharge. |
Improvement/Rectification
was observed during follow-up audit session on 3 June 2021. |
|
|
3/6/2021 |
Avoid muddy runoff from soil particles near Siu
Hang San Tsuen Stream. Cover exposed slope surface and clear any dislodged
soil materials for sediment control measures (Portion C). |
Improvement/Rectification
was observed during follow-up audit session on 10 June 2021. |
||
|
3/6/2021 |
Clear the slurry trapped by desilting materials
near Siu Hang Tsuen Stream regularly (Portion C). |
Item
was remarked as 210610-O03. Follow-up action is needed to be reviewed. |
||
|
3/6/2021 |
To provide channels, bunds or sandbags to direct
any stormwater/ surface runoff from area of excavation into site area and to
silt removal facilities (Portion C). |
Item
was remarked as 210610-R01. Follow-up action is needed to be reviewed. |
||
|
3/6/2021 |
Enhance water control measures to minimize any
muddy runoff during rainfall (Portion B). |
Improvement/Rectification
was observed during follow-up audit session on 10 June 2021. |
||
|
Water Quality |
3/6/2021 |
Review on drainage system to direct treated
discharge to proper outfall (Portion H). |
Improvement/Rectification
was observed during follow-up audit session on 10 June 2021. |
|
|
10/6/2021 |
Regularly clear the U-channel and provide sand bags
for U-channel as sediment control measures (Portion D). |
Item
was remarked as 210617-R02. Follow-up action is needed to be reviewed. |
||
|
10/6/2021 |
Wastewater from haul road cleaning should be
directed to wastewater treatment facilities and properly treated (Portion
C). |
Item
was remarked as 210617-R03. Follow-up action is needed to be reviewed. |
||
|
10/6/2021 |
Mud trapped by desilting materials should be
frequently cleared to ensure proper function (Portion C). |
Item
was remarked as 210617-R04. Follow-up action is needed to be reviewed. |
||
|
10/6/2021 |
Erection of desilting materials should be well
maintained to ensure proper function in sediment control (Portion C). |
Improvement/Rectification
was observed during follow-up audit session on 17 June 2021. |
||
|
10/6/2021 |
Replace the sand bags to minimize source of
muddy runoff (Portion C). |
Item
was remarked as 210617-O03. Follow-up action is needed to be reviewed. |
||
|
10/6/2021 |
To provide channels, bunds, or sandbags to
direct any storm water / surface runoff from area for excavation into site
area and to silt removal facilities (Portion C). |
Item
was remarked as 210617-R05. Follow-up action is needed to be reviewed. |
||
|
17/6/2021 |
Erection of sand bags near U-channel is in
progress. The status of mitigation measures will keep checked and reviewed
(Portion D). |
Improvement/Rectification
was observed during follow-up audit session on 24 June 2021. |
||
|
17/6/2021 |
Wastewater from haul road cleaning should be
directed to wastewater treatment facilities and properly treated (Portion
C). |
Item
was remarked as 210624-R01. Follow-up action is needed to be reviewed. |
||
|
17/6/2021 |
To clear the mud trapped by desilting materials
(Portion C). |
Improvement/Rectification
was observed during follow-up audit session on 24 June 2021. |
||
|
17/6/2021 |
To provide channels, bunds, or sandbags to
direct any storm water / surface runoff from area for excavation into site
area and to silt removal facilities (Portion C). |
Improvement/Rectification
was observed during follow-up audit session on 24 June 2021. |
||
|
17/6/2021 |
To ensure silt curtain at Potion C is properly
deployed and avoid any leakage of muddy water from site area. |
Item
was remarked as 210624-O02. Follow-up action is needed to be reviewed. |
||
|
17/6/2021 |
Replace the sand bags to minimize source of
muddy runoff (Portion C). |
Item
was remarked as 210624-O03. Follow-up action is needed to be reviewed. |
||
|
Water Quality |
24/6/2021 |
Wastewater from haul road cleaning should be
directed to wastewater treatment facilities and properly treated (Bridge A2). |
Follow-up
action is needed to be reported in the following month. |
|
|
24/6/2021 |
Cover exposed site area during rainstorm (Bridge
A2). |
Follow-up
action is needed to be reported in the following month. |
||
|
24/6/2021 |
To ensure silt curtain at Portion C is properly
deployed and avoid any leakage of muddy water from site area. |
Follow-up
action is needed to be reported in the following month. |
||
|
24/6/2021 |
Replace the sand bags to minimize source of
muddy runoff (Bridge A2). |
Follow-up
action is needed to be reported in the following month. |
||
|
Waste/Chemical Management |
27/5/2021 |
Clear the oil stain on the ground. |
Improvement/Rectification
was observed during follow-up audit session on 3 June 2021. |
|
|
27/5/2021 |
Drip tray should be provided for chemical
storage. |
Item
was remarked as 210603-R04. Follow-up action is needed to be reviewed. |
||
|
3/6/2021 |
Drip tray should be provided for chemical
storage (Portion D). |
Improvement/Rectification
was observed during follow-up audit session on 10 June 2021. |
||
|
17/6/2021 |
Clear the general refuse and keep the site clean
and tidy (Portion H). |
Improvement/Rectification
was observed during follow-up audit session on 24 June 2021. |
||
|
17/6/2021 |
Clear the stagnant water in drip tray and treat as
chemical waste. Maintain the drip tray well at Portion C. |
Item
was remarked as 210624-O01. Follow-up action is needed to be reviewed. |
||
|
24/6/2021 |
Clear the stagnant water in drip tray and treat as
chemical waste. Maintain the drip tray well at Portion C. |
Follow-up
action is needed to be reported in the following month. |
||
|
24/6/2021 |
Drip tray should be provided for chemical
storage (Portion C). |
Follow-up
action is needed to be reported in the following month. |
||
|
Landscape and Visual |
24/6/2021 |
Remove the construction materials within the
tree protection zone (Portion C). |
Follow-up
action is needed to be reported in the following month. |
|
|
Contract No.: ND/2019/05 |
||||
|
Air Quality |
15/6/2021 |
Stockpile of dusty materials should be covered
properly. |
Improvement/Rectification
was observed during follow-up audit session on 21 June 2021. |
|
|
Water Quality |
9/6/2021 |
Properly clear the site drainage to avoid
blockage. |
Improvement/Rectification
was observed during follow-up audit session on 15 June 2021. |
|
|
Water Quality |
15/6/2021 |
Water should be cleared regularly at wheel
washing facilities. |
Improvement/Rectification
was observed during follow-up audit session on 21 June 2021. |
|
|
21/6/2021 |
Bunding should erect near bored piling works
area to avoid any muddy water discharge out of site boundary. |
Improvement/Rectification
was observed during follow-up audit session on 28 June 2021. |
||
|
28/6/2021 |
Clear slurry on site haul road and ensure adequate
capacity of sediment tank to minimize any muddy runoff through site surface. |
Follow-up
action is needed to be reported in the following month. |
||
|
Landscape and Visual |
21/6/2021 |
Remove the construction materials within the
tree protection zone. |
Improvement/Rectification
was observed during follow-up audit session on 28 June 2021. |
|
|
Contract No.: ND/2019/06 |
||||
|
Water Quality |
24/6/2021 |
Properly review the capacity of the
sedimentation facilities to ensure all site discharge is treated comply with
the WPCO license.
|
Improvement/Rectification
was observed during follow-up audit session on 30 June 2021. |
|
|
Waste / Chemical Management |
27/5/2021 |
To avoid oil leakage from equipment. |
Improvement/Rectification
was observed during follow-up audit session on 3 June 2021. |
|
|
Contract No.: ND/2019/07 |
||||
|
Waste / Chemical Management |
25/6/2021 |
To clear the general refuse at site entrance. |
Follow-up action is
needed to be reported in the following month. |
|
Implementation Status of Environmental Mitigation Measures
10.3
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
importance in the vicinity of the Project, 2m high solid dull green site
barrier fences shall be erected around all active works areas.(Figure 12) |
^[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.(Figure 14) |
^[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.(Figure 15) |
^[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.(Figure 16) |
^[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.(Figure
17) |
^[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
10.4
Under
EP-467/2013/A (Condition 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. As the Works programme under above EPs
were still under preparation work and the
barrier fences erection was still progressing in the Reporting Month, 2m high
solid dull green site barrier fences will be checked once in place. The
Hoarding Plan of the above EPs is shown in Figure
13.
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 |
Temporary wastewater
storage tank for storm water retention |
Hydroseeding for
stockpile area |
||
|
ND/2019/02 |
Provision of sand
bags around works area |
Covering exposed slope surface by tarpaulin |
||
|
ND/2019/03 |
Wastewater from wheel
washing was directed to wastewater treatment facility |
Regular clearance of
water for wheel washing facility |
||
|
ND/2019/04 |
Surface channels and
earth bunds to direct storm water to wastewater treatment facilities for
works area near Siu Hang San Tsuen Stream |
Provision of
wastewater treatment facilities for works area near Siu Hang San Tsuen Stream
|
|
|
|
ND/2019/05 |
Deployment of sand
bags around works area |
Smart checking operation of wastewater
treatment facilities |
||
|
ND/2019/06 |
Grasscrete for slope protection |
Provision of concrete berm around site area |
||
|
ND/2019/07 |
Covering exposed slope surface by tarpaulin |
Additional wastewater
treatment facilities for rainstorm event |
||
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, ND/2019/06
and ND/2019/07 include inert construction and demolition (C&D) materials
and non-inert C&D wastes in the Reporting Month.
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, ND/2019/06 and
ND/2019/07 during the
reporting month are shown in Appendix R.
10.8
The
Contractors are advised to minimize the wastes generated through the 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 25th June 2021 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
|
Agricultural practice are
continued in existing farmland to maintain habitats in Long Valley |
|||
|
|
|
Chinese
arrowhead pond |
|
|
Creation of wetland with designated
habitat for biodiversity conservation |
|||
|
Planting of paddy rice to provide
foraging ground for Yellow-breasted Bunting |
|||
|
Retention of washing bay for amphibians
breeding |
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 |
Nesting of Black-winged stilt was recorded |
||
|
Regular watering on haul road for dust
control |
Provision of shad cloth to reduce
nuisance to avifauna |
||
|
Provision of noise barrier for
noisy works in Long Valley |
Provision of wastewater treatment
facilities |
||
|
Laying geotextile under rock layer to
allow effective reinstatement of temporary access road |
|||
