How will Desert Rock affect he environment? If — or when — the 1,500 megawatt Desert Rock Power Plant planned near Burnham on the Navajo Nation comes online, its emissions will add significantly to the pollution wafting over the Four Corners region, contends Mary Uhl, director of the New Mexico Environment Department's Air Quality Division. "The nitrogen dioxide and sulfur dioxide emissions from Desert Rock, while less than emissions from San Juan Generating Station and Four Corners Power Plant, are still substantial and are being added to an airshed that is on the brink of not attaining the federal ozone standard," Uhl said. The plant's effects won't be known completely until it begins its operations, burning pulverized coal to supply power to growing areas in Arizona and Nevada....