Denver’s RTD says a gas leak is causing continued delays for several light-rail lines on Thursday, July 21.

Early Wednesday morning, RTD reported that a gas leak near the Colorado Convention Center was causing delays for the H, F and D lines. RTD advised leaving an extra 20 to 30 minutes for rides on those lines.

Says RTD:

All three lines “are terminating at Convention Center Station. Bus shuttles are transporting passengers between Convention Center Station and 20th & Welton Station. D line service is running between 20th & Welton and 30th & Downing Stations.”

Xcel Energy hopes to have the situation resolved Thursday, says Spokesperson Mark Stutz.

At this point, Xcel Energy has taken the line that was leaking out of service. The 15 customers that were getting their gas from that line have been switched to a new line without any interruptions to their service.

Now all that remains is to vacuum the residual gas from the line with a leak. Since the leak is within a foot of the light rail track, Stutz says the levels will be at or near zero before they issue the all clear to RTD.

Additional reporting by Megan Arellano.