There are lots of L & L stamps from 2002 along the South Clemens/North Aurelius transition, in the vicinity of the 496 and railroad overpasses. I think they are probably connected with the project that reduced Aurelius to two lanes to four as part of a traffic calming measure. This one is in front of Half Barn Farm, an urban farm on the southeast corner of South Clemens Avenue and Elizabeth Street.
Half Barn Farm is one of many urban farms in the Urbandale neighborhood. It replaced a demolished house in the 2010s.