Williams Transco Central Penn Line South. Williams Transco Central Penn Line South. Unlike liquid petroleum product pipelines, where the main risk is a leak leading to contamination of water and soil, the main risk with a high-pressure natural gas pipeline is a rupture and ensuing fire.
The White House today holds 142 rooms on six floors, the floor space totaling approximately 55,000 square feet. It has hosted longstanding traditions such as the annual Easter Egg Roll, as well as historic events like the 1987 nuclear arms treaty with Russia.
White House. The White House is the official residence and workplace of the President of the United States, located at 1600 Pennsylvania Avenue NW in Washington, D.C. It has been the residence of every U.S. president since John Adams in 1800.