Students had to leave Grand Valley Middle School for several hours Wednesday because of an unidentified odor. Upon arrival at about 11 a.m., fire crews noted a slightly elevated reading on a monitor for hydrogen sulfide (sewer gas), according to a Garfield County press release. The source of the smell has not been determined. Students were moved to L.W. St. John Middle School for most of the afternoon before getting the all clear to head back to their school prior to the end of the school day. During the evacuation, school officials shut down air dampeners for a couple of hours to stabilize the air, tested everything again, and found no elevations in readings, the press release said. The fire district will again test the building at 6 a.m. Thursday to ensure that it’s safe for students to return.
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