Under discussion: A plan to take property taxes from a planned Hialeah industrial park and use them to help pay for a ballpark for the Marlins.

Hialeah city leaders, who recently won clearance to build an industrial park on 1,100 acres of land that had been off-limits to large-scale development, are discussing a plan with Miami-Dade County that would devote property taxes from the industrial park to building a new stadium for the Florida Marlins.

Hialeah Mayor Julio Robaina says he expects developer Armando Codina to donate part of the land to the city, which would then give it to the Marlins, who have been trying for years to find money to build a new stadium with a retractable roof.

But even with lots of public help, the team was still about $100 million short of the stadium's $400 million price tag -- and that's where the property-tax plan would come in.

Miami-Dade County Manager George Burgess and Hialeah Council President Steve Bovo said the idea is under discussion. ''It's a viable alternative,'' Burgess said of the plan, which would need the county commission's approval. ``It's an approach we have . . . agreed makes sense. We're moving quickly.''

Though the deal is far from final, a successful resolution would keep the Marlins, who have recently flirted with the idea of relocating to San Antonio, Texas, in South Florida.

Burgess stressed that no homeowners would see their property taxes earmarked for a stadium, and he said it was too soon to determine how much money the industrial-park plan could generate. But Bovo said ''you're talking about a huge amount of money'' potentially. Burgess agreed that the industrial park ``could generate significant incremental tax value.''

''We have to look at this carefully, to see what kind of development could occur there,'' he said.

The property taxes paid by businesses that locate in the industrial park would be split nearly evenly: half to Hialeah and half to the county, Robaina said Wednesday. Burgess said shares from both governments' property taxes would go toward the stadium -- though Robaina earlier in the day said he envisioned that no Hialeah money would be used. Any Hialeah involvement would require Hialeah City Council approval.

Under the scenario, the stadium would be built on a construction debris landfill site near the Turnpike and 170th Street. Codina's plans for the industrial park there would include offices and warehouses.

Codina had said as recently as last week that he had no plans to donate any of the property to Hialeah or to the Marlins. Codina was not available to comment on his plans Wednesday night, said his spokesman, Bruce Rubin. However, Robaina said he expected Codina would make the donation.

The Marlins, who are declining comment on the stadium issue, are facing a May 15 deadline to respond to San Antonio's proposal to ask voters to extend hotel and car-rental taxes that would help finance a stadium there. The Marlins have said they prefer to remain in South Florida but haven't ruled out San Antonio.

If the proposal goes before the Miami-Dade County Commission, it would need the approval of seven of the 13 commissioners. The county already has pledged between $110 million and $120 million from other sources toward the deal, Burgess said.

Commission Chairman Joe Martinez reserved judgment about whether he would support the plan. ''It's a possibility,'' he said.

Robaina also has said he expects Major League Baseball to contribute toward the project, but that's considered highly unlikely.

Bovo called the idea of pledging property-tax money in the area ``very enticing. We're almost done with the conversation part. We're about to start negotiations with the county and the Marlins.''