Evidently, the two cans were left from construction of the Pickford Street stormwater project of 2009. You can see where the culvert empties into the lake in the photo above.
But why were the cans now revealed, over a year after the project was finished? Joints between the segments of the box culvert had been sealed inside the culvert. Probably the cans were left inside. Later, when there was enough flow in the culvert, the cans washed out. If true, this means the inside of the culvert wasn't carefully inspected by the City when the work was finished.
Who is responsible
- Speedway Sand and Gravel was the contractor. In 2010, their sloppy work on Edgewood Ave resulted in numerous spills of sediment into Lake Wingra. Later, their work on Segoe Ave involved dumping of concrete wastewater, and stormwater inlet protection that failed during a heavy rain.
- Stewart Mael was the City inspector for this project.