The two oil refineries in Whatcom County are challenging their property assessments, and millions of dollars in taxes are at stake.

BP Cherry Point is the county's top taxpayer. It says the property assessment of about $975 million is at least $275 million too high.

The Bellingham Herald reports the tax on $275 million in property amounts to nearly $3 million.

The second biggest taxpayer in the county is the smaller Phillips 66 refinery. It says its $459 million assessment is $35 million too high.

The refineries and the county are taking the dispute to the state Board of Tax Appeals.