Those who run the furnaces at cement plants like the fire red hot - the hotter the better.

All of which makes highly flammable solid hazardous wastes - things like old paint and solvents - popular fuels for some cement plants. But the House Tuesday passed a bill that would prohibit cement plants from burning solid hazardous waste unless they meet state siting criteria for disposal of commercial hazardous waste.Only one cement kiln in Utah burns hazardous waste as a fuel, which had many lawmakers concerned the bill was targeting a single company. "We are identifying a single business and spot-zoning them out," observed Rep. Brent Haymond, R-Springville.

But Rep. Joe Moody, R-Delta, the sponsor of the bill, said the issue was one of public health policy and requiring all users of hazardous waste to comply with state guidelines.

"We're not talking about one kiln. There is a potential for others," agreed Rep. David Jones, D-Salt Lake, adding lawmakers should "err on the side of caution."

HB165 now goes to the Senate.