I went to do some more exploring of Urbandale today, and had some nice weather for it. These stamps are on the east side of Leslie Street between Elizabeth and the 496 dead end, in front of a vacant lot. (I’ve mentioned before that Urbandale has a lot of vacant lots.) I haven’t been able to figure out who “S.C. Env.” is, so if you know, please leave a comment.

The southern stamp.

The odd thing about this one is that it’s one long pour, without any separation of blocks. I haven’t seen that before.

The northern stamp. It was filled with water due to the recent thaw.
Looking south on Leslie.

Update 4/19/21: I figured out who SC Env. is!