Gas Chromatography-Mass Spectrometry (GC/MS) As It Relates To Urine Drug Testing. Gas Chromatography-Mass Spectrometry (or GC/MS) is a two-step methodology used to identify different substances within a test sample. GC/MS is widely used due to its ability to perform a specific test, and is an extremely effective in identifying the presence of a specific substance within a given sample.
(name). (email). To: (email). The Gateway Arch, 630 feet tall and another 630 feet wide, is an elegant frame to the historic city of St. Louis. A gigantic endeavor in its time, the arch is almost 100 feet taller than the Washington Monument and more than twice the height of the Statue of Liberty.
When describing the height of the arch, the government claims it is 63 stories tall when using a 10-foot average story height, according to the National Park Service. Architects who want to build a taller room may create stories that are 14, 16 or even 20 feet high. Vaulted ceilings make a large difference in the height of stories.