Update: today the scanner appears to be online although using the Scanner Live app or the app from the website you don't hear anything. You get an indication that there is information being transferred but there is no sound??
The feed was put back online about 9am yesterday (7/31/17). It is putting out radio traffic, although there is what sounds to be an AC hum. The hum becomes present when the input audio is turned up above normal. The audio on the feed is set to just below the point where the audio is "over driven". The reason the audio is kept so loud, is that it is used primarily for firefighters to monitor when responding to the fire station on calls.
As is side note the feed will be down time to time over the next month or so for equipment upgrades.