Signs have gone up around the former metal foundry site at 3617 Baer St. in the Fifth Ward indicating that a hearing is scheduled for this Thursday to get city approval for the latest rejiggering of homesites on the 35-acre tract. Developer Frank Liu of Lovett Homes, InTown Homes, and a few other local builder brands plans to put a total of 538 homes (down from 589) on the EPA-monitored property, known as the MDI Superfund Site after the last owner of the metal-casting operations, Many Diversified Interests, which shut down in the early 1990s (previously, the plants were owned by TESCO). The property, which lies just south of I-10 about 2 miles of east of downtown, was listed on the EPA’s list of priority Superfund sites in 1999, after tests showed the soil and groundwater was contaminated with lead and other hazardous metals.