When it appears that data submitted by the LPA is not sufficient to support recommended values, ROW PD should take immediate steps to obtain additional information. If investigations and studies indicate that the LPA values are not sufficiently supported and recommended for approval, qualified staff or fee appraisers will be used as necessary to enable ROW PD to make a firm recommendation as to values. The cost for such appraisers shall be borne by either the LPA or TxDOT, in accordance with the contractual agreement.