Which aspect of septic system inspection requires an alternate method if blocked?

Access to the distribution box is a crucial part of septic system inspections because it allows inspectors to assess the distribution of effluent to different drainfield lines. If access to the distribution box is blocked, it prevents the inspector from performing a visual assessment of the system's operation and effluent flow. In such cases, alternative methods or tools may need to be employed to gather necessary information about the system's performance.

For example, an inspector might use inspection cameras or other techniques to visualize the interior of the distribution box from a distance or gain information about the effluent flow without direct access. This ensures that the inspector can still perform a comprehensive assessment of the system despite the hindrance.

Observing tank lids, evaluating control panels, and measuring distances from structures do not specifically necessitate an alternate method if access is obstructed, as these tasks can often still be accomplished or estimated without the same level of obstruction impacting the overall inspection process.