Here's an update regarding the pothole that would not die on the 1600 block of Montello Avenue NE:
It appears to be gone! WASA said they would be drilling some holes in the vicinity to determine if the problem was related to groundwater or to a leaky valve nearby. Whatever it is/was, it appears that they found it. Water is no longer coming out of the road. There are a couple places further down the block here that appear to have been dug up as well. Now, if DDOT would just hurry up and properly add the asphalt pavement here, we might be able to say everything is fixed. I'll keep an eye on things in order to make sure this problem doesn't come back.