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| NewsTuesday, October 16, 2007 11:30 PM CDT |
Nicor deals with Lexington gas leak
UPDATED 8:25 p.m. LEXINGTON — Hoping to stop a roaring natural-gas leak that spewed across a cornfield, Nicor workers prepared to pump up to thousands of gallons of saltwater into a natural-gas storage well early today. | Photo gallery A malfunctioning valve on a wellhead failed while it was being replaced a little before 10 a.m. Tuesday in a rural area near Dameron Road just west of Interstate 55 and southwest of Lexington. “This is a long process. This isn’t something you can just shut a valve and turn it off,” Nicor spokesman Bernard Anderson said Tuesday night of the repair effort. “We’ll see daylight before all the repairs are made.” He later added. There was no evacuation, but some neighbors were delayed going home until Tuesday evening. McLean County sheriff’s deputies kept the Dameron Road area cordoned off. Anderson said the leak did not threaten the environment, and the crew at the scene when the leak occurred was not hurt. The noise of escaping gas sounded like a jet engine. Anderson said the pressure was 1,000 pounds per square inch. “It’s a large volume of natural gas dissipating into the atmosphere,” Anderson said. Engineers would not be able to calculate how much gas escaped until after the leak was stopped, Anderson said. The facility, which stores natural gas in cavities in underground rock formations, usually has about 9 billion cubic feet of gas cycling through its system at a given time, he said. A cloud of white vapor could be seen at the leak site, but Anderson said that was water, not natural gas. The natural gas itself was dissipating quickly in the air, Anderson said Tuesday night, noting there were no measurable levels of natural gas 100 feet from the leak. Nicor called in special crews from St. Elmo, a town southwest of Effingham, and tanker trucks from surrounding fire departments and transportation companies, Anderson said. About two dozen people from Nicor were at the scene Tuesday night along with dozens of others. Workers mixed calcium chloride into the water to make it heavier, Anderson said. They intended to pump it into the well to cut off the gas outflow, he said. They prepared 72,000 gallons just in case, but they expected to use close to 12,000 gallons, said McLean County Emergency Management Agency Director Curtis Hawk. The saltwater would not damage drinking water, Anderson said. The gas storage wells run 4,000 feet to a mile deep, and drinking water is drawn from wells about 500 feet deep, he said. The fire departments called in to carry the salt water to the scene included Pontiac, Flanagan, Towanda, Chenoa, Bloomington Township, Downs, El Paso, Gridley and Hudson. Extra semitrailer tankers and emergency vehicles also lined the road for an estimated mile or more. “It’s usually a little different,” Hudson Fire Chief Dell Thomas said of the firefighters’ role. “We’re all in the process of learning (how to deal with the situation), to tell you the truth.” Hawk said that as long as there was not a fire at the leak site, there was not much concern about the gas blowing across the fields. McLean County Sheriff Mike Emery said deputies with his department blocked three intersections and acted as security to make sure repairs could be made without interruptions. He said some traffic would be allowed, depending on Nicor’s needs. Anderson said there are 35 gas storage wells in the Lexington area. The gas is brought to the Lexington wells through one of the eight major pipelines in Illinois, he said. He said the amount of gas escaping was a small portion of the amount stored in that well. Anderson said that, in the last 18 months, Nicor and the Lexington Fire Protection District met and discussed similar situations and what would be done to respond to a leak. Roger Miller contributed to this story. |
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