DEMONSTRATORS will have to protest more quietly under plans by the Environmental Protection Department to introduce controls on loud-hailers. The proposal is included as one of the department's noise abatement goals for the coming financial year. The move has been welcomed by legislator Albert Chan Wai-yip who has complained about the nuisance, especially mainland boatmen who use loud-hailers to talk to their friends late at night. The banter frequently disturbs residents in waterfront areas such as Tsuen Wan, Aberdeen and Tuen Mun. 'We don't object to the loud-hailers being used in an emergency, but not to discuss horse-racing [at three in the morning],' he said. The department will also introduce laws to control another scourge for sleeping residents, vehicle alarms. Overall the department plans to spend $1.848 billion on environmental programmes in the coming financial year, $173 million more than the 1995-96 estimate. The biggest increase - 13 per cent - is on waste facilities where $1.207 billion is earmarked for the development and operation of landfills and refuse transfer stations. Most of the rise will meet extra payments to contractors operating waste facilities after a dramatic surge in the amount of rubbish handled. Some 83 per cent of the territory's rubbish will be dumped in landfills in 1996-97 compared to 53 per cent this year, an increase of 634,500 tonnes. Nearly $147 million extra will be spent creating 37 new posts to tackle air pollution. The 6.7 per cent rise will go towards setting up three air quality monitoring stations, two stations measuring toxic air pollutants and implementing the diesel to petrol conversion programme. Spending on waste, mainly construction and livestock related, will rise by 7.2 per cent to $200.5 million. This reflects more grants to farmers to build on-farm treatment facilities. Measures to control water pollution will cost 5.8 per cent more, equivalent to $178.3 million. Tougher noise limits on construction machinery, including pile drivers, has been proposed as part of a 1.9 per cent increase to $59 million on efforts to control noise.