The 1,001-room Omni Dallas Hotel received LEED Gold certification yesterday for new construction, the first and so far only LEED Gold hotel in Texas and the largest LEED Gold hotel in the United States outside of Las Vegas. The construction of the property, which opened last November, included recycled and regionally sourced materials, and a plan that reduced construction pollution and conserved water. A 25,000-gallon cistern now captures rain water to irrigate plantings, including the hotel's rain garden. Systems also are in place to control lighting and temperature in guest rooms by using the room key. In addition, the on-site Texas Spice recently was certified as a 2-Star Green Restaurant by the Green Restaurant Association. The Omni Dallas has 110,000 square feet of meeting space, including the 32,000-square-foot Dallas and 15,000-square-foot Trinity ballrooms. The property is connected via skybridge to the Dallas Convention Center.