California Code, Public Contract Code - PCC § 22107

(a) Price negotiation with respect to all acquisitions conducted under this chapter.

(b) System or equipment component performance or availability standards, including an assessment of the added cost to the district to receive contractual guarantee of a level of performance.

(c) Requirement of a bond or assessment of a cost penalty with respect to a contract or consideration of a contract offered by a vendor whose performance has been determined unsatisfactory by the district.