* Better Government Association…

Chicagoans in minority neighborhoods on the West Side and South Side have the greatest exposure to toxic air pollution and other environmental health hazards in the city, according to a first-of-its-kind analysis that community groups are using to fight Mayor Rahm Emanuel’s industrial planning practices.

The findings were compiled by the Natural Resources Defense Council, an environmental advocacy group that plans to use the document to try to persuade city officials to end the common practice of steering scrap yards, distribution warehouses and other polluting businesses to neighborhoods with large concentrations of Latino and African-American residents.

Among the most dramatically affected communities, the group found, are Little Village, Pilsen and the far Southeast Side.

Activists in those communities say Emanuel’s city planners are pushing dirty industries to majority Latino and black communities, while neighborhoods like Lincoln Park on the more well-to-do North Side are shedding their industrial past for new condo buildings and high-end amenities.

* Meanwhile, you may recall this TV ad last summer from the American Chemistry Council touting US Rep. Peter Roskam…

That $209,000 TV ad buy and $185,050 in chemical industry contributions are coming back to haunt Roskam.

* Tribune…

But the ad takes on new meaning now that the Sterigenics sterilization facility just outside Roskam’s west suburban district is under fire for emitting ethylene oxide, a highly potent, cancer-causing gas made by Dow Chemical, Union Carbide, Shell and several other members of the trade group.

Two months after the chemical industry’s pro-Roskam ad began airing, the U.S. Environmental Protection Agency released a report revealing that communities surrounding the Sterigenics facility in Willowbrook are among just a few dozen in the country facing alarmingly high cancer risks from toxic air pollution, most notably ethylene oxide emissions. […]

Roskam’s supporters in the chemical industry have a dramatically different view.

Soon after the EPA released its report, the industry trade group quietly urged President Donald Trump’s administration to scuttle a stringent safety limit for ethylene oxide adopted in 2016 after more than a decade of debate. The agency relied heavily on the safety limit when it calculated its worrisome estimates of cancer risks in communities surrounding Sterigenics and other facilities across the nation that either manufacture or use the chemical.

Chemical companies are pushing the Trump EPA to declare that ethylene oxide is far less dangerous than the agency’s career staff and three separate panels of independent scientists determined. Industry-supported scientists have repeatedly downplayed animal research showing the chemical mutates DNA and studies of medical sterilization workers who suffered high rates of breast cancer, leukemia and lymphomas.