Construction Phase

4.41-4.43

3.19

·         Use of quiet PME for the construction of the pumping stations

·         Use of temporary noise barrier during the construction of Pumping Station P1a

Work site /during the construction of Pumping Stations 

Contractor

Ö

EIAO-TM, NCO

4.44 – 4.49

3.19

Implementation of following measures during the sewer construction:

·          Use of quiet PME or method;

·          Restriction on the number plant (1 item for each type of plant); and

·          Good Site Practices

-    Only well-maintained plant should be operated on-site and plant should be serviced regularly during the construction program.

-    Mobile plant, if any, should be sited as far away from NSRs as possible.

-    Machines and plant (such as trucks) that may be in intermittent use should be shut down between work periods or should be throttled down to a minimum.

-    Plant known to emit noise strongly in one direction should, wherever possible, be orientated so that the noise is directed away from the nearby NSRs.

-    Material stockpiles and other structures should be effectively utilized, wherever practicable, in screening noise from on-site construction activities.

Work site /during the construction of Sewer.

Contractor

Ö

4.50 – 4.53

3.19

·         Use of noise screening structures such as acoustic shed and barrier wherever practicable and feasible in areas with sufficient clearance and headroom.

·         Adoption of manual working method wherever practicable and feasible in areas where the worksites of the proposed sewer alignment are located less than 20 m from the residential NSRs and less than 30 m from the temple (THT) and the public library.

·         Use of PME for the construction of the section of sewer between the NSR and the Pumping Station P1a should not be allowed during the excavation work of Pumping Station P1a.

Work site /during the construction of Sewer.

Contractor

Ö

4.60

Section 35

Noise monitoring

Designated noise monitoring locations / throughout construction period

Contractor/ Environmental Team

Ö

EM&A Manual

Operation Phase

4.55

3.20

Installation of silencer at Pumping Station P1a.

Pumping Station P1a / during construction

E&M Contractor

Ö

Maintenance of silencer at Pumping Station P1a

Pumping Station P1a / during operation

DSD

Ö