Open covers thoroughly, check inlet and outlet baffles and tees, document fractures or deterioration

https://wiki-club.win/index.php/Sewage-disposal_Tank_Emptying_Set_Up_and_Ideal_Practices_for_Long-Term_System_Health_And_Wellness

Open lids thoroughly, check inlet and outlet baffles and tees, file cracks or corrosion, and repair seals to stop groundwater intrusion and exfiltration that can overload the drainfield.