Wow, we haven't had earthquakes in the East for quite a while! This is in a new location, and is hopefully a result of silly injection. I only say that because we'll get a lot more, and I'll have something to comment on. :)
In the past year, I've noted a trend where they probably sink a deep hole into the Precambrian and instantly get earthquakes. Then they shut down because they don't want the bad publicity. But they continue to inject huge volumes into the Cambrian sandstone right beside it. One day these chickens will come home to roost.