Trenching Equipment arrives

UPDATE - Here is video of the fully-assembled one-pass trencher that I took on Saturday afternoon.

Here it is sitting idle, shortly after it has started the trenching process:

Permeable Reactive Barrier construction progress

(click to enlarge)

Construction of the Permeable Reactive Barrier (PRB) has begun and is proceeding according to the work plan schedule.  On Thursday afternoon (Nov. 7th), work crews were excavating to expose an abandoned sanitary sewer so that it can be cut out from the vicinity of the PRB and capped.   The panorama photo above shows the unearthing of the south end of the sewer line.  The staked square outlined with yellow caution tape to the right of the pick-up truck marks the north end of the sewer segment to be removed.   The PRB will run the entire width of this photo and its location is marked by a series of three parallel stakes with red tape on their tops. Check back here for photos of the trenching activity that will occur during the week of Nov. 11th.