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.
The physical address of the White House is 1600 Pennsylvania Avenue. Construction of the White House on this site began in 1792, and President and Mrs. John Adams were its first residents in 1800. The residence had to be rebuilt following a fire in 1814 during the War of 1812.