I’ve heard that there is subsurface gas and tar in the study area. How can I be sure that the system can be constructed and operate safely?
Subsurface gas is present throughout much of the greater Los Angeles area and is often a factor in construction projects. While tunneling for transportation has special considerations, other projects have been constructed in subsurface gas zones within the Los Angeles region including buildings with deep parking garages and basements, storm drains, sewer projects and other utility projects. Similar protocols for safety and testing apply to these projects as they would for a transportation project. Safety, both during construction and eventual operations, is one of Metro’s highest priorities. It is also one of the key evaluation criteria during the Draft EIS/EIR. We have safely operated the current Metro Red/Purple Line subway for over 15 years and have successfully constructed subway tunnels where subsurface gas has been present. In 2005, an American Public Transit Association Peer Review Panel determined that “It is possible to tunnel and operate a subway along the Wilshire Corridor s
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