All lanes of southbound Interstate Highway 680 in unincorporated Pacheco have been shut down on the morning of Aug. 30, because of a crash involving a truck that has prompted a hazardous materials response, California Highway Patrol and fire officials said.
The crash was reported at 8:06 a.m. at the junction with State Highway 4 and initially blocked all lanes except for the far left one, according to the CHP.
