An overturned semi spilled human waste all over the roadway on the southbound Interstate 5 offramp to Highway 2.
After an hours-long closure, the roadway reopened around 7:00 p.m.
Only a minor injury has been reported from the rollover that happened after noon. After nearly five hours, the highway was partially cleared, but the spillage made the road slick.
A detour was in place while cleanup was underway.
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A Department of of Ecology spokesman says the "human waste" is processed, disinfected, dry solid material from wastewater treatment.
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