About 90 employees of BP plc-Arco will remain in La Palma with a new employer after the company sells its refinery in Carson and its 800 or so Arco service stations to Tesoro Companies Inc.

Another 160 BP workers who had been in La Palma remain with the company thanks to recent transfers to its Carson refinery.

U.K.-based BP-Arco had occupied about 80,000 square feet at the Centerpointe office park in La Palma. San Antonio-based Tesoro is expected to move to another Centerpointe building, with plans to take about 20,000 square feet.

Tesoro first announced plans to purchase BP’s assets for $2.5 billion in August.