Ran across this yesterday. A/S Toro valves below grade. Top of the valves 6" below the lid of the 1419 box (at grade.) Excavating revealed a slow leak, lots of camphor tree roots, and old pipe abandoned by someone before when one valve was converted to drip.
Also had to use my Socket Saver
to ream out one side of a tee just downstream of a completely buried PVC ball valve because the valve fittings were all butted up to each other. Also took a bit longer to do all because temps were in the mid 90's.
Installed three new RB ASVF valves and a new hose bib secured to a post.
Going back to finish all connections today.