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The environment inside this high security room must be spotless to prevent contamination.

The evening before Valentine’s Day, as a heavy rain fell and flooding and mudslides hit Southern California, Stephan and Natalia sat at their dining room table amid white walls, a chandelier and a spotless floor.

At Muir, which reopened Jan. 30, Villegas and his crew had cleared fallen trees, repaired other wind damage, and made sure the contract workers had left interior spaces spotless.

Five spotless frames in Game 3 of the Fall Classic.

Until late Wednesday, the Trojans seemed well on their way to seizing that opportunity against Oregon, which sat atop the conference after a spotless 8-0 start.