EXHIBIT 99.1 LEASE AMENDMENT NO. 1 OFFICE BUILDING: 2240 Douglas Boulevard, Suite 100 ---------------- Roseville, CA 95661 LANDLORD: LUM YIP KEE, LIMITED, a Hawaii corporation --------- doing business as Twin Trees Land Company TENANT: AMERICAN RIVER...Work Letter Agreement • July 31st, 2006 • American River Bankshares • State commercial banks
