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 latter contains the famous 'Oval Office', the president's main office. The room was modeled on the 'Blue Room', an oval room at the center of the White House. The building contains a total of 132 rooms, some of them can be visited on a tour, including the Green Room, Blue Room, Red Room and State Dining Room.