There is already large flux of population from rural areas towards cities based on economics, education and employment rendering high demand onto limited resources already urban communities are facing. To meet this highly increasing housing demand, multistory building complex are emerging in all mega cities in the world adversely effecting the supply of utilities (fresh water, clean air, electricity, waste disposal etc.). Kuwait is located in the northeastern corner of Arabian peninsula and weather is very hostile that forces people to spend 90% of their time in indoor environment and the design of buildings are highly energy intensive due to air conditioning load. There is new approach to seek renewable energy resources and optimizing the use of energy in residential and office buildings.

Kuwait Petroleum Corporation, KPC has financed a project to construct new headquarters, Oil Sector Complex, (OSC) that has been completed recently at an old salt-chlorine industrial location. This site has reminiscence history of Salt-Chlorine Plant using large number of mercury cells for electrolysis of brine to produce caustic soda and chlorine gas resulted into mercury pollution in marine waters and silt sediment. The present study focuses on mercury measurements in air, water and sediments around this building and assessment of air quality and comfort levels in KPC building consisting of 22 floors, and adjacent building, Ministry of Oil of 14 floors facing Kuwait Bay.