Shall the measure amending the City of Walnut Creek General Plan, the North Downtown Specific Plan, and the Municipal Code to redesignate a 2.4 acre site at the northeast corner of North California Boulevard and Ygnacio Valley Road from office uses to mixed use residential uses, and to create a new Mixed Use Residential Senior & Commercial zoning district to limit allowable uses on the site to multifamily senior housing (primarily 55 years of age or older) and commercial uses compatible with senior housing, be adopted?