As shown below, the answer to yesterday's puzzle is that they are planting new trees. The series of plastic pipes comes from a company named DeepRoot. As its name implies, the piping is an irrigation system that helps the tree's roots grow down into the soil instead of sideways. If you have a tree near a patio or sidewalk, you know first-hand how powerful and destructive their roots can be. You can read more about DeepRoot at the link below which includes a rainwater filtration option I don't believe is being used here.
I have no clue how much taxpayer money they are spending on this project but just to plant six trees must be worth it in someone's mind.
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