California Code, Public Utilities Code - PUC § 103399.9

In order to prevent fraud, waste, and abuse, the district shall prepare for each individual job order developed under a job order contract an independent cost estimate.  The estimate shall be prepared before the receipt of any job order contractor's estimate for the work and shall be compared to the job order contractor's estimate to determine the reasonableness of that estimate before issuance of any job order.  If the district finds the job order contractor's estimate to perform work for a given job order to be unreasonable, not cost effective, or undesirable, the district may elect not to issue the job order to the job order contractor, and may, instead, use any other available procurement procedures or choose not to move forward with the work.