9.1
The
sewerage performance assessment results in the EIA Report identified surcharged
sewers measuring a total length of 1520m with diameters ranging from 225mm to
375mm under the SIA peak flow condition.
Works to improve the surcharged sewers are needed. It was also proposed to upgrade the existing
sewers with pipes of diameters ranging from 225mm to 375mm in order to relieve
the identified hydraulic inadequacies and surcharged condition.
9.2
EM&A
requirement associated with sewerage and sewage treatment is not expected.
9.3
Upgrading
of the sewers is proposed for the redevelopment project.
9.4
Sewerage
improvement works to the existing sewers were recommended to relieve the
identified hydraulic inadequacies and surcharged condition.
9.5
The
implementation schedule for the recommended sewerage and sewage treatment
mitigation measures is presented in Appendix B.