Environmental Protection Monitoring

Monitoring

Prior to commencement of construction, different types of monitoring instruments would be installed by phasing to close monitor the site and also surrounding conditions.

Monitoring Points
Data for Ground Settlement Monitoring Points
Data for Ground Settlement Monitoring Points
Data for Building Settlement Monitoring Points
Data for Building Settlement Monitoring Points

The types of monitoring instrument are including but not limited to:

Piezometer to check the water change level

Settlement marker to check the ground settlement

Tilting marker to check the building verticality

Vibration Measurement

Tell tales to check the crack width

Noise measurement to monitor the construction noise is within the permitted limit

Air particle measurement to monitor the air quality

Air and Dust Control Measures

The construction will be carried out with environmental protection practices which help minimize the impact to the neighborhood.

Spray water on the surface of dusty material before, during and after excavation generally.

Provide impervious sheet covering the stockpile

Use dump truck equipped with mechanical cover for transportation of dusty material

Wash vehicle to remove any dusty materials before leaving a site

Provide temporary hydroseeding on cut slope as dust control measures

Provide temporary hydroseeding on cut slope as dust control measures

Noise Control Measures

Noise barriers and enclosures are to be employed to minimize the noise impact to public

The breaker tip is to be wrapped with sound insulating material to reduce the noise

Environmental Friendly Method for Rock Breaking=Electro Power Impact (EPI) Rock Breaking

EPI

During the rock breaking operations, only two mats have to be used as a protection measure to cover the breaking zone

Hoarding and rock fence is to be provided to prevent any loose materials fall to the public road and underneath