Courts fined a leading construction firm a total of $95,000 for making the environment noisier or dirtier. Paul Y-ITC Construction was last month convicted of five offences of noise pollution and one offence of water pollution at three construction sites. The offences were committed about six months ago but lengthy legal proceedings meant the cases were not brought to court until last month. Since 1993, the firm has been convicted 31 times for carrying out work on Sundays without a permit, and 28 times for failing to comply with pollution controls. An Environmental Protection Department spokesman said Paul Y-ITC Construction's directors had been asked to make improvements. The department announced the offences yesterday in its monthly list of prosecutions. Paul Y-ITC was among about 90 firms and individuals listed. The construction company declined to comment. According to the Environmental Protection Department's report, a total of 111 convictions were recorded last month for breaching pollution legislation. Among the cases, 33 were convictions made under the Water Pollution Control Ordinance, 25 under the Noise Control Ordinance, 22 under the Air Pollution Control Ordinance and 29 under the Waste Disposal Ordinance. Two were made under the Ozone Layer Protection Ordinance. Fines ranged from $900 to $40,000.