But Angel said there are too many things Stericycle and the state of Utah haven't told residents: things like some of the ash produced through the incineration process is characterized as hazardous waste.

Hoboy said her company isn't trying to hide anything and actually does extra reporting to state officials. She said the hazardous ash that is produced is taken to a facility licensed to dispose of it.

Some residents during the meeting questioned why homes and schools were allowed to be built so close to the incinerator, which emits low doses of dioxin, a known toxic substance.

North Salt Lake Councilman Conrad Jacobson said Stericycle has a very good record.

When Woodside Homes came to the city with the plan to build a mixed-use community, city leaders researched the facility and couldn't find a reason to not allow new housing to be built.

"We levied a requirement on sellers that they include within any sales packet that the buyer is aware that Stericycle is there," Jacobson said.

Anyone who built a new home with Woodside was required to sign a form with that information, said Woodside attorney Jason Nelsen.

Any residents who don't remember signing the form can get a copy by calling Woodside Homes. Nelsen said, however, the disclosure of Stericycle's proximity to new homes only applied to people who bought new homes. Anyone who bought an existing home would have had to receive the information from the seller, Nelsen said.

Though Folgmann is still trying to decide where to send her children to school, she said she's concerned about the black soot that adorns the top of the incinerator.

After she read the news article, her 12-year-old son, Drew, used Google Earth to look at incinerator sites around Utah. A black circle sits atop Stericycle's facility but not on top of the Davis County burn plant or on top of the Deseret Chemical Depot, which incinerates chemical and neurological weapons.

For Cambria Beuchert, who owns two homes in Foxboro, the concern now, after doing her own research and homework, is whether what appears to her to be an imaginary danger will drive down home values in her neighborhood.

"I feel good to know there are other people who feel the way I do," Beuchert said.

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E-mail: jdougherty@desnews.com