This small cover is on the north side of East Michigan Avenue between Clemens and Horton, in front of the residential-looking building that houses the City Pulse office, as I wrote about previously. Around the triangle marking on it are the words “Observation – Monitoring – Well” and inside the triangle is the warning “Do not fill.” I did not actually know what it was, so I had to look it up. It turns out it is a monitoring well, used to monitor groundwater level and quality.

The company name on it is Kilman Electriloc. I can turn up several patents assigned to that company, including one from 1995 for a monitoring well cover. OpenCorporates indicates that Kilman Electriloc of Cumming, Georgia, dissolved as a corporation in 2011. There is, however, also a still-active record for Kilman Bros. in nearby Grayson, Georgia. Kilman Bros. is engaged in the business of well drilling, among other things. I assume there is a relationship, at least a familial one.