An ammonia leak caused a hazmat scare in the North Valley Tuesday night.
Cal Fire says a 4" pipe exploded at the Dole plant in Atwater around 6:40 p.m. releasing 100 gallons of ammonia.
Merced County fire, police and hazmat crews immediately evacuated 175 employees and residents living within a mile of the plant.
The pipe was repaired and evacuation orders were lifted a couple hours later.
Cal Fire says employees will be allowed to return to work on Wednesday.
Investigators are trying to determine the cause of the pipe failure.
Copyright 2012 High Plains Broadcasting LLC All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.