Washington Revised Code Title 42. Public Officers and Agencies § 42.24.080. Municipal corporations and political subdivisions--Claims against for contractual purposes--Auditing and payment--Forms--Authentication and certification

(1) All claims presented against any county, city, district or other municipal corporation or political subdivision by persons furnishing materials, rendering services or performing labor, or for any other contractual purpose, shall be audited, before payment, by an auditing officer elected or appointed pursuant to statute or, in the absence of statute, an appropriate charter provision, ordinance or resolution of the municipal corporation or political subdivision. Such claims shall be prepared for audit and payment on a form and in the manner prescribed by the state auditor. The form shall provide for the authentication and certification by such auditing officer that the materials have been furnished, the services rendered, the labor performed as described, or that any advance payment is due and payable pursuant to a contract or is available as an option for full or partial fulfillment of a contractual obligation, and that the claim is a just, due and unpaid obligation against the municipal corporation or political subdivision. No claim shall be paid without such authentication and certification.

(2) Certification as to claims of officers and employees of a county, city, district or other municipal corporation or political subdivision, for services rendered, shall be made by the person charged with preparing and submitting vouchers for payment of services. He or she shall certify that the claim is just, true and unpaid, and that certification shall be part of the voucher.