Bunker project. Does anyone know the ruling for ground under repair in a bunker

Link - USGA ruling for Ground Under Repair in a bunker

 

 

We are starting to clear and or repair the pipes in the bunkers that do not drain.

Bunker in rough on #4

                                The Maintenance crew digging up bad pipe on #4 greenside bunker

After pipe is cleaned or replaced new pea gravel is placed on pipe to keep the perforations clear of debris then covered with sand. This bunker is in the rough on #1