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Emergency repairs made to underground natural gas pipeline near LaRiviere

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On July 1, Northern Natural Gas received a report of a natural gas odor near its underground pipeline facilities located near the LaRiviere Park at Prairie du Chien. Northern personnel immediately responded and detected a small leak in its 6-inch-diamater odorized line. The leak and repairs to the line required the temporary closing of the park. 

Emergency repairs were completed on the line over the weekend. There was no loss of service as a result of the leak or repairs to the line. When the repairs were complete, the park was reopened. The cause of the leak was likely a lightning strike. There had been heavy rains in the area and there was evidence of damage from a lightning strike at a nearby tree.

Although the completed repairs were in full compliance with safety regulations, Northern’s internal procedures require Northern to replace the pipeline segment. This will require additional excavation at the site. The replacement will likely take from seven to 10 days to complete. There will be no service interruptions and there is no threat to public health or safety.

The replacement is tentatively scheduled for Aug. 22; however, Northern will coordinate with city administrators and park officials in planning the excavation and construction activities in order to avoid any organized events scheduled at LaRiviere Park. 

“On behalf of the city of Prairie du Chien and the patrons of LaRiviere Park, we are very appreciative of the response from Northern Natural Gas following the discovery of this leak,” said City Administrator Aaron Kramer. “Their communications with the city regarding this leak and future permanent repairs were especially prompt, and we are impressed with their response time and initial repairs done over a holiday weekend.” 

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