Despite hundreds of millions of dollars spent on environmental cleanup, more than half the yards in a section of Omaha, Nebraska, that used to surround a lead smelter still have enough contamination to cause high blood-lead levels in kids, according to tests by the Flatwater Free Press and ProPublica.

The findings were consistent across the city’s older urban core — in the historically Black neighborhoods north of downtown, the predominantly Hispanic areas to the south and the more white and affluent areas in midtown. However, homes closest to where a lead smelter and other downtown factories operated tended to have slightly higher concentrations than those farther out.

As part of the Environmental Protection Agency’s Superfund program, the federal government and the city of Omaha have been attempting to remove lead from Omaha’s yards since the late 1990s.

The EPA’s cleanup standard for Omaha was set in 2009 and is based on health recommendations from 1994. Since then, research has shown that lower exposures can cause IQ loss in kids and heart attacks in adults. Twice in the last 15 years, the Centers for Disease Control and Prevention lowered what it considers a high blood-lead level. An EPA risk model found that to protect most kids according to those new health guidelines, soil levels would have to be below 100 parts per million — about 10 grains of rice in a 10-pound bucket of dirt.

The Flatwater Free Press and ProPublica tested 388 homes in the Omaha Superfund site and found that 208 had levels over 100 parts per million.

But the EPA has never required that level of cleanup in Omaha or as a national remediation standard. Current EPA policy for the Omaha cleanup site directs contractors to dig up and replace yards if tests show they contain more than 400 parts per million of lead — about a marble’s worth of the metal dispersed across a 10-gallon bucket of dirt. Last week, the Flatwater Free Press and ProPublica reported that 1 in 10 of the homes we tested that........

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