Installation of Submarine Water Main at Sham Tseng

The project involved the installation of submarine water mains running from Sham Tseng to Ma Wan. These mains supply water to the new developments in Ma Wan.

Environmental Concern

Since the construction site was about 80 m away from the nearest noise sensitive receivers of a large residential development, the Sea Crest Villa, noise from 2 mud pumps and a desander, was the major environmental concern.

Sea Crest Villa is close to the construction site

Measures Adopted

Enclosure - Effective enclosure was provided for the mud pumps and the desander to reduce the noise impact.

Administration - Through reducing the operating speed of the mud pumps, the noise arising from them was further reduced in the early morning and late afternoon.

Noise enclosure for the mud pumps

Noise barrier for the desander

Observations & Achievements

The adopted technical measures reduced the noise levels at the nearest domestic premises by 12 dB(A). Moreover, the measures had also reduced the noise levels at daytime. More than 500 domestic premises were benefited from the measures.