Eleven Western Builders is the general contractor on the Walmart in Wasco. A Walmart will open January 13, 2016 in Wasco.  The Supercenter will have a grand opening event at 7:30 a.m. After that, it’ll be open 24 hours a day, seven days a week, according to the Walmart.  The store at 401 N. Central Ave. has a staff of …