Katherine Miller (Letters, April 2) expressed concern about the safety of operating the Metro Rail subway through the 3rd and Fairfax area because of oil and gas deposits.
RTD engineers knew at the start of planning that Metro Rail would encounter oil and gas, especially in the Fairfax area where there are abandoned oil wells. That's why we've worked closely with fire and safety officials during the past five years to incorporate safeguards in the design, construction and operation of Metro Rail.
Several safety systems are planned to minimize risk. First, the subway tunnels will be lined with steel to prevent oil and gas from seeping inside. Metro Rail stations will be protected with dense polyethylene sheets placed behind the station walls for similar protection.
As a backup, gas detectors will continuously monitor gas levels in all Metro Rail stations and tunnels. If gas is detected, an alarm will activate fans to ventilate the area.