Workers responded to two locations Wednesday afternoon to repair gas lines that were hit by third-party contractors who were digging, a National Grid spokeswoman said.

One home in Valley Stream was affected after a contractor digging in the yard hit the service line, said Wendy Ladd of National Grid. Workers were still on the scene as of around 2 p.m. making repairs, she said.

Nassau County police said that Merrick Road between South Terrace Place and North Central Avenue was reopened after having been closed because of a gas line leak. Police responded at 11:12 a.m. to a call of a natural gas leak in the area, police said.

Utility workers also were on the scene in Central Islip working on a main line that was hit by water company workers who were digging in the street, Ladd said. That's at Booth Street and Pineview Boulevard, she said. The location "has been made safe and there was no interruption to customers," Ladd said.

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Police responded at 12:30 p.m. to that location to a call reporting the smell of gas, Suffolk County police said.

Because spring is a busy season for yard work -- digging, planting, putting in fence posts and other such projects -- she advised residents to first call 811, the national "Call Before You Dig" number. Area utility representatives will then "come out and mark out your services, so you don't hit anything," Ladd said.