Chevron moved to cap an assessment The oil slick in Frade is about 120 km . Rio said an assessment well was the source of the spill . The spill does not appear to threaten ANP 's famed beaches , Chevron says .
The oil slick in Frade is about 120 km . Rio said an assessment well was the source of the spill . The spill does not appear to threaten ANP 's famed beaches , Chevron says .