An Ecuadorean judge ruled Monday in an epic environmental case that Chevron Corp. was responsible for oil drilling contamination in a wide swath of Ecuador’s northern jungle and ordered the oil giant to pay $9.5 billion in damages and cleanup costs.

The amount – $8.6 billion plus a legally mandated 10 percent reparations fee – was far below the $27.3 billion award recommended by a court-appointed expert but appeared to be the highest damage award ever issued in an environmental lawsuit.