0001292058-07-000003 4 1 20070228 20070302 20070302 McDonald Andy 0001292058 4 34 000-20288 07666578 253-305-1900 1301 A STREET, STE. 800, MS-3100 TACOMA WA 98402-4200 COLUMBIA BANKING SYSTEM INC 0000887343 6022 911422237 WA 1231 1102 BROADWAY PLAZA TACOMA WA 98402 2533051900 1102 BROADWAY PLAZA TACOMA WA 98402 4 1 edgar.xml PRIMARY DOCUMENT