Table 5.1 – Observations and Recommendations of Site Audit

Parameters	Date	Observations and Recommendations	Follow-up
Air Quality	7 July 2021	Observation: Stockpiling of excavated soil should be covered with impermeable sheeting and contained properly to prevent contaminated runoff and dust emission at main store area where SI works of SCAP is conducting. (Portion 1 – YLSTW)	8 July 2021
	15 July 2021	Reminder 1: The contractor is reminded to cover the stockpiling of excavated soil with impermeable sheeting to prevent ingress of water during rainstorms and/ or prevent dust emission near the demolished PST. (Portion 1 – YLSTW)	NA
	25 Aug 2021	Recommendation 1: The Contractor is recommended to increase watering for dust suppression during demolition of workshop (Portion 1 – YLSTW).	25 Aug 2021
	1 Sep 2021	Reminder 1: The Contractor is reminded to cover the excavated soil properly with tarpaulin sheets to prevent dust emission for trial pit (Portion 1 – YLSTW).	1 Sep 2021
	16 Sep 2021	Observation 1: Wind blown dust is observed when the truck is leaving at site exit. The Contractor should provide mitigation measures to prevent dust emission from vehicle wheel & body (Portion 1 – YLSTW).	16 Sep 2021
		Observation 2: The Contractor is required to improve the mitigation at present wheel wash area at southern exit (e.g. provide better bedding of aggregates for preventing muddy water) (Portion 1 – YLSTW).	18 Sep 2021
Noise	NA
Water Quality	7 July 2021	Reminder: The contractor is reminded to provide mitigation measure to prevent silty runoff getting into the storm drain near main store area. (Portion 1- YLSTW)	8 July 2021
	28 July 2021	Observation: Mitigation measure should be provided to prevent direct discharge of runoff at Zone 1 area near detritor. (Portion 1 – YLSTW)	29 July 2021
	28 July 2021	Reminder: The contractor is reminded to de-silt the gullies near the main entrance to the piling area. (Portion 1 – YLSTW)	NA
	4 Aug 2021	Observation 1: Provide mitigation to prevent direct discharge of silt-laden water into the storm drain near the boot cleaning basin (Portion 1 – YLSTW).	5 Aug 2021
	16 Sep 2021	Reminder 1: The Contractor is reminded to provide MSDS information at WetSEP. (Portion 1 – YLSTW)	16 Sep 2021
	23 Sep 2021	Observation 1: Mitigation measures should be provided to intercept silty runoff from the piling area (Portion 1 – YLSTW).	24 Sep 2021
Chemical and Waste Management	7 July 2021	Observation: Stockpiling of excavated soil should be covered with impermeable sheeting and contained properly to prevent contaminated runoff and dust emission at main store area where SI works of SCAP is conducting. (Portion 1 – YLSTW)	8 July 2021
	15 July 2021	Reminder 1: The contractor is reminded to over the stockpiling of excavated soil with impermeable sheeting to prevent ingress of water during rainstorms and/ or prevent dust emission near the demolished PST. (Portion 1 – YLSTW)	NA
	4 Aug 2021	Observation 2: Drip tray should be provided for the chemical as mitigation to prevent accidental spillage (Portion 1 – YLSTW).	5 Aug 2021
	8 Sep 2021	Reminder 1: The Contractor is reminded to provide drip tray for the chemicals to prevent accidental spillage (Portion 1 – YLSTW).	8 Sep 2021
	29 Sep 2021	Reminder 1: The Contractor is reminded to cover the excavated soil properly with tarpaulin sheets to prevent dust emission (Portion 1 – YLSTW).	29 Sep 2021
Land Contamination	NA
Ecological Impact	15 July 2021	Reminder 2: The contractor is reminded to maintain and reinstate the bird curtain at the northern site boundary. (Portion 1 – YLSTW)	NA
	25 Aug 2021	Reminder 1: The Contractor is reminded to maintain and reinstate the silentup at the northern site boundary (Portion 1 – YLSTW).	25 Aug 2021
Landscape and Visual Impact	15 July 2021	Reminder 3: The contractor is reminded to closely monitor the tree condition of Tree T028 for open cut too close to the tree near temporary administration building. (Portion 1 – YLSTW)	NA
Permit / Licenses	NA
Others	NA