Open lids thoroughly, check inlet and outlet baffles and tees, file cracks or rust

https://padlet.com/romanmail5050nrtph/bookmarks-s5x02truij4e43fi/wish/j40PQDYgDENlZvXB

Open covers carefully, check inlet and outlet baffles and tees, document fractures or deterioration, and repair seals to stop groundwater intrusion and exfiltration that can overload the drainfield.