We use a rod to measure the amount of material that has collected in the bottom of the structure. Well, it's the main thing we're looking for, but there are several things that might require maintenance. For instance, roots in a pipeline or structure can be quite a problem if they aren't periodically cut out. Holes in the sides of catch basins are also common and if they aren't repaired soon after forming, can lead to sink holes in the pavement above. Broken grates can be a hazard and need to be replaced.
Broken pipes can lead to major flooding and surface failure.
The overwhelming majority of maintenance required will be cleaning. However, if your system does require something more, it's in your best interest to know about it before your system fails. No, it's not necessary, but you're certainly welcome to participate. Yes, we'll send you an inspection summary the week after your inspection. If no maintenance is required, you'll get a letter telling you that your system is in compliance.