The Group is actively involved in environmental protection. Through Green Valley Landfill Limited and South China Transfer Limited, the Group works for a cleaner, greener Hong Kong.

Green Valley Landfill Limited

Green Valley Landfill Limited designed, built, operates and is responsible for the long-term aftercare of the South East New Territories (SENT) landfill, which has been in operation since September 1994. It occupies a 100-hectare site, with a capacity of 43 million cubic metres, and can handle 10,000 tonnes of refuse each day. The landfill processes municipal, construction and chemical waste, and it is the only landfill in Hong Kong capable of treating industrial waste and stabilized chemical waste. Sophisticated technology is employed to minimise the environmental impact of the refuse, with an on-site bio-gas plant incorporating a leachate management system to prevent unacceptable leachate migration off-site into the surrounding environment.

South China Transfer Limited

South China Transfer Limited was granted a contract to build a station on a 2-hectare West Kowloon reclamation site, and has been in operation since December 1995. The station can process 2,600 tons of waste a day. The company also provides pollution monitoring control tests, as well as serving as a refuse transfer station. In May 2000, the facility started to collect and transport Drainage Services Department sludge.

The station's catchment area spans West Kowloon, Tsuen Wan, Tsing Yi and Kwai Chung, and it is Hong Kong's largest transfer station.