Derek has over 15 years environmental consultancy and project management experiences in acoustic design and environmental impact assessments for government projects, railway design and construction projects, planning and lands applications for private developments. Derek, as a Project Director/ Manager handled over 300 government and private development projects and conducted more than 500 technical assessments on environmental (air quality, noise and acoustics, water quality, landscape and visual, cultural heritage, waste management including landfill gas hazard, land contamination and sediment quality assessment); green building (air ventilation and microclimate study, daylight and overshadowing assessment; life cycle costing/ analysis and acoustics); sewerage and drainage.
Derek has involved in several acoustic design projects for railway developments, construction of government facilities, schools, hospitals, private developments and studios. Also, he has experiences on noise control design and applications on tackling the sound and vibration transmission problems of the buildings.
Apart from acoustic design and environmental expertise, Derek has experiences on the environmental monitoring and audit. He is currently the independent consultant in one of the strategic landfills (WENT Landfill) looking after a comprehensive EM&A programme and independent checking of liner system construction and certification.