About 109 households near the work sites of the MTR West Island Line will have their window glazing upgraded and air conditioning installed after it was found they may suffer from excessive noise from the construction. The measures were proposed in the environmental impact assessment report on the railway line that will run from Sheung Wan to Kennedy Town. The study found that a number of buildings within 300 metres of the worksites would be exposed to noise of up to 98 decibels, 23 decibels above the daytime construction noise limits stated in the Environmental Impact Assessment Ordinance. The highest level of unmitigated noise is projected to affect flats at 1 Third Street in Sai Ying Pun, the study says. The Ivy Tower of Western Garden, also in Sai Ying Pun, might have to endure noise levels of between 42 and 91 decibels. Even if the noise was mitigated by quieter mechanical equipment, noise barriers and phased work schedules, the noise level would still exceed the standard by up to 11 decibels for a period of up to 27 months. The report says there are up to 109 dwellings in more than 20 premises facing varying levels of noise even after such on-site mitigation measures. As a result, the MTR voluntarily proposed to adopt what it called 'indirect technical remedies' to upgrade the window glazing of affected households. The report, available on the Environmental Protection Department's website, is now on public display for comment.