Table 5.2 Observations and Recommendations of Site Inspections

Parameters	Date	Observations and Recommendations	Follow-up
Water Quality	13/08/2009	Milky waste water was observed accumulated at Western Portal. The Contractor was reminded to pump the wastewater out for treatment before discharging out.	Rectification/improvement was observed during the follow-up audit session.
	13/08/2009	Stagnant water was observed accumulated at the abandoned sedimentation tank at Eastern Portal. The Contractor was reminded to dry it out.	Rectification/improvement was observed during the follow-up audit session.
	13/08/2009	Silt and sand were observed accumulated at the access road at Eastern Portal. The Contractor was reminded to clear them.	Rectification/improvement was observed during the follow-up audit session.
	13/08/2009	Mud was observed from clogging the drainage channel at Intake MB16. The Contractor was reminded to clear them.	This item was not observed during the follow-up site audit session.
	19/08/2009	Silty water was observed discharging out from Intake SM1. The Contractor was reminded to cleanup the sedimentation tank regularly to ensure efficient performance of water treatment plant.	This item was not observed during the follow-up audit session.
	19/08/2009	Water quality inside the sedimentation compartment was milky at Western Portal. The Contractor was reminded to maintain the water treatment facility can function properly.	Follow-up action was needed for the item.
	27/08/2009	Water quality inside the compartment of wetsep was slightly milky and the milky water was observed discharging out at Eastern Portal. The Contractor was reminded to ensure the water treatment facility can function properly.	Rectification/improvement was observed during the follow-up audit session.
	27/08/2009	Milky water from the spoil basin was observed leaking out at the sand bag bund at Eastern Portal. The Contractor was reminded to erect concrete bund or other appropriate to prevent any wastewater leaking out.	Rectification/improvement was not observed during the follow-up audit session.
	27/08/2009	A pit of silty water was observed at underneath of water diversion pipe at Eastern Portal. The Contractor was reminded to provide mitigation measure to avoid any silty water discharging to the public drain.	Rectification/improvement was observed during the follow-up audit session.
Noise	04/08/2009	Gap was observed at the noise enclosure at Eastern Portal. The Contractor was reminded to seal the gap before the operation of TBM.	#Follow-up action was needed for the item.
	04/08/2009	Noise mitigation measures was observed insufficient for the further noise generation works (e.g. rock breaking) at Eastern Portal. The Contractor was reminded to review the implementation of appropriate mitigation measures.	Rectification/improvement was observed during the follow-up audit session.
	27/08/2009	Noise was noticed from the rock breaking works (with movable noise barrier) at Eastern Portal. The Contractor was reminded to provide and further review the noise mitigation measures implemented for the noise generation works.	Follow-up action was needed for the item.
Waste / Chemical Management	04/08/2009	Chemical waste storage area was observed without chemical waste label at Eastern Portal. The Contractor was reminded to attach it with appropriate label.	Rectification/improvement was observed during the follow-up audit session.
	04/08/2009	Paint containers were observed to be placed near the drainage channel at Western Portal. The Contractor was reminded to clear them.	Rectification/improvement was observed during the follow-up audit session.
Reminders	04/08/2009	The Contractor was reminded of the followings: - Clear the stagnant water at the area that may retain water after the rain at Eastern & Western Portal.	Rectification/improvement was observed during the follow-up audit session.
	13/08/2009	The Contractor was reminded of the followings: - Seal the remaining narrow gap at the noise enclosure at Eastern Portal.	Follow-up action was needed for the item.
	19/08/2009	The Contractor was reminded of the followings: - Seal the remaining narrow gap at the noise enclosure at Eastern Portal.	Follow-up action was needed for the item.
	27/08/2009	The Contractor was reminded of the followings: - Seal the remaining narrow gap at the noise enclosure at Eastern Portal.	Rectification/improvement was observed during the follow-up audit session.

Note: (*) The Environmental deficiencies have been rectified by the Contractor. However, the item was reoccurred during the follow-up site audit due to construction activities/rainstorm. The Contractor was reminded to rectify the deficiencies more frequently.

(#) No TBM operated were observed during the site inspection.