We dug up the 4 inch sewer line were the 4’’ x 4” x 4’’ wye was broke. we removed 118 feet of 4” pipe.  we thin Put the new 4” x 4” x 4” wye in with 19 feet of 4’’ pipe. to vacuum test to check if we were holding vacuum .we backfilled and cleaned up the road way. 
Brian and a couple guys did some exploratory digging at the life station for N.T.S