PCC §10311: (a) An estimate or requisition approved by the state agency in control of the appropriation or fund against which an acquisition is to be charged, is full authority for any contract for goods of the q

(a) An estimate or requisition approved by the state agency in control of the appropriation or fund against which an acquisition is to be charged, is full authority for any contract for goods of the quality specified by the agency or determined by the department as provided in this article made pursuant thereto by the department. (b) The department shall issue a call for bids within 30 days after receiving a requisition for any goods that are regularly acquired within this state. The period of closing time designated in the invitations for bids shall be exclusive of holidays and shall be extended to the next working day after a holiday. (c) Except as provided in subdivision (d), after the closing date for receiving any bids within or without this state, the contract shall be awarded or the bids shall be rejected within 45 days unless a protest is filed as provided in Section 10306. (d) After the 45-day time period prescribed by subdivision (c), the department may in its sound discretion either award the contract to the lowest responsible bidder meeting specifications who remains willing to accept the award or else reject all bids. (e) The amendments made to this section at the 1987–88 Regular Session of the Legislature do not constitute a change in, but are declaratory of, existing law.