A Washington state-based supermarket chain plans to buy nine local Vons and Albertsons stores in a transaction linked to the $7.6 billion sale of Safeway to the investors group that owns Albertsons. In the Ventura County area, Haggen Inc. plans to buy seven Albertsons and two Vons in Camarillo, Newbury Park, Oxnard, Simi Valley, Thousand Oaks and Westlake Village.