But, Farmington is trying to figure out what it wants the mixed-use to be.

"My patience, and my investor's patience, has run out," Martinez told the Planning Commission during a Thursday meeting to discuss the project.

Last December, Martinez's company, America West Development, got the city's approval to build a "transit-oriented development" with shops, homes and an office park west of Interstate 15 along Park Lane.

But in January, the city wanted to take another look at what a "transit-oriented development" would require.

"One person's mixed-use is not another person's mixed-use," said Kevin Poff, Planning Commission chairman, of how to integrate shops, homes and offices.

Poff said the city developed its definitions of mixed-used and, more specifically, transit-oriented development when commuter rail in Farmington was just a concept.

Now that FrontRunner is a reality, "we realized it was time to take a look at the zone and what still applies," Poff said.

The Planning Commission is in the process of developing a more detailed description of what its "transit-oriented development" zones should require, as far as housing density and how roads will connect to alleviate traffic congestion. Poff said traffic is a big concern because the city's transportation study recently came back saying that no matter what is built on Park Lane, traffic will get backed up.

Poff said he hopes a new proposal on transit-oriented development will soon be drawn up and presented to the Planning Commission in June or July. Then it has to go to the City Council for approval.

And that leaves Martinez's project stalled, the developer said.

Before he spends money to draw up more specific and detailed plans that need to be approved, Martinez said he needs to know what the Planning Commission wants.

"My time's running up . . . our options are running out," he said. "And the alternatives - you're not going to like."

mariav@sltrib.com