Turlock's Costco store opened at 11:30 a.m. after a refrigeration pipe leak caused a delay.
Turlock firefighters were called to the store on North Tegner Road this morning after a refrigeration pipe broke open.
The call came in at 8:45 a.m.
Fire Marshal Mark Gomez said firefighters are airing out the building, which was evacauted as a precaution against the leaking gas, but no injuries have been reported.
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There is no danger to the surrounding area, he added.