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| NewsThursday, October 18, 2007 1:06 PM CDT |
Nicor unsure why leak happened
LEXINGTON — Workers closed a roaring natural gas leak Wednesday morning, about 24 hours after maintenance to a faulty valve led to the leak. | Updated photo gallery Nicor employees injected about 8,000 gallons of briny water into the well to force the gas back down and then plugged the line while the valve was repaired, said company spokesman Bernard Anderson. The well, in a harvested cornfield just west of Interstate 55 and southwest of Lexington, began releasing natural gas at a pressure of about 1,000 pounds per square inch about 10 a.m. Tuesday. The repairs were finished about 9:25 a.m. Wednesday, he said. Nicor officials chose not to attempt the repairs Tuesday night, despite having lighting available at the well, Anderson said. “Even though you have lighting, you’ve got a lot of shadows cast,” Anderson said. “And they wanted to make sure that everybody — you know, our employees — remained safe.” Lexington Fire Chief Jim Berry said he was at the well for 24 hours and five minutes because of the leak. Lexington firefighters arrived at the well about 11:30 a.m. Tuesday, and tanker trucks from his and other area fire departments and semitrailer tankers were later used to carry to the well the water mixed with calcium chloride, which makes the water heavier, he said. Anderson said about 72,000 gallons of the solution was prepared in case it was needed. The well is one of 35 in the Lexington area used to store about 9 billion cubic feet of natural gas, Anderson said. During late spring and throughout the summer, gas is pumped into openings in the rock more than 4,000 feet below the surface and stored for later use, he said. Though Anderson said a large amount of gas was lost, it is little compared with the amount stored at the site. The amount of natural gas lost wasn’t immediately known, Anderson said. And he said consumers won’t be affected by the leak. Anderson previously noted the saltwater would not affect drinking water supplies because the gas well was far deeper than water wells, which typically run about 500 feet deep. For now, company officials are trying to answer their own questions about what happened. “Now what they’re looking at is why did this occur, how did this occur, how can we avoid this from occurring again and is there anything we can do better at this point,” Anderson said. Anderson said the incident is the first of its kind in the 27 years he has worked for Nicor. He hopes it will not happen again, he said, “But if it does, this is how we’ll handle it.” Flushing the equipment Pontiac Fire Chief Dennis McDugle said his department flushed a tanker used to haul the saltwater to the wellhead Tuesday night and was flushing it again Wednesday afternoon. He said he is not familiar with effects of saltwater on the truck, but “I wouldn’t want to haul it all the time.” But the chief noted his trucks do pump water from ponds, creeks, rivers and anywhere else they can get water in rural areas, so the water carried in the trucks isn’t always clean. Berry said he is not concerned about the effect of the saltwater on his truck, though it and the fire hoses used have been flushed. At least 13 fire departments were called to assist Lexington’s fire department during the leak, Berry said. He said a concerted effort with those departments and Nicor mitigated the problems and avoided catastrophe. “It had the potential to be very dangerous,” Berry said. “It turned out pretty well.” Jill M. Watson, spokeswoman for the Illinois Environmental Protection Agency, said her agency did not respond to the gas leak and natural gas releases. But she said EPA officials would respond if there was some environmental impact or a request from first responders. |
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