Contact Information: p: 509.335.1721 w: seserc.wsu.edu Mailing Address:WSU Research Park1615 NE Eastgate Blvd. Ste FPullman, WA 99164-1801 SESRC keeps up to 300 interviewers on staff, depending on current project needs. Each one receives careful training specific to each project. Some of our interviewers are bilingual, enabling us to reach diverse populations.