If you have any questions that are not answered here, please call (210-335-2211) or visit the Bexar County. The CPO has authority over state agency procurement Authorized to provide leadership on procurement issues, the CPO may ana.Each good or service the City purchases has a competitive solicitation method that describes to vendors how their bid or proposal will be evaluated and awarded. City, at City's option, may purchase and maintain such insurance as shall insure City against loss of use of City's property due to fire or. Catalogs shall be mailed to the Finance Department, Purchasing Division, P.O. Box 839966, San Antonio, Texas 782833966 prior to bid opening. Learn how to calculate and analyze expected monetary value (EMV) to support decision making in project management and PMP exam prep.