By Diana Baldwin Staff Writer dbaldwin@oklahoman.comEDMOND — The city has only about 1,000 acres of land projected for commercial use left to be developed, and Edmond officials are concerned because the city operates primarily on sales tax revenue. City Planner Bob Schiermeyer said planning authorities calculated a city should have 20 percent of its land zoned commercial, not including property designated for industrial use. "Edmond has less than 5 percent of its land throughout the city limits designated for commercial," Schiermeyer said. City Manager Larry Stevens has repeatedly said it worries him that Edmond is so reliant on sales tax revenues. "The fact that we have 1,000 acres zoned commercial is a concern to us," Stevens said.Read more on NewsOK.com