Dеfendants Judith Moreau and Walter and Clara Lawrence (“the landowners”) appeal the district court’s thirty percent reduction of an award of attorneys’ fees based upon a failure of the landowners’ counsel to adequately documеnt the charges. The landowners also appeal the district court’s failure to include certain costs and prejudgment interest in the award, and the district court’s denial of a subsequent fee application seeking reimbursement for fees and exрenses incurred in prosecuting the initial fee application. We affirm in part and reverse in part.
I.
BACKGROUND
The facts of this ease are set forth with greater detail in the district court’s opinion regarding the principal fee application in
Tennessee Gas Pipeline Co. v. 104 Acres of Land,
The landowners moved for costs and attorneys’ fees, pursuant to the Uniform Relocation Assistance and Real Property Acquisition Policies Act (“Relocation Act”), 42 U.S.C. § 4601 et seq. On August 25, 1993, the district court awarded the landowners attorneys’ fees but disallowed thirty percent of the fees requested by the law firm of Simons & Simons (“Simons”), one of the two firms that represented the landowners, because it found that the firm failed to adequately document its charges. Tennessee Gas paid the fee award on September 7, 1993. On September 22, 1993, the landowners filed a supplemental fee application seeking reimbursement for fees and expenses incurred in prosecuting the principal fee application during the period from April 29, 1992, to March 1993. On September 24, 1993, the landowners filed a notice of appeal from the district court’s order with respect to the principal fee application. On March 2, 1994, the district court entered judgment denying the supplemental fee petition because thе court determined that the petition was untimely. The landowners appealed the March 2 order. In April, this court ordered that both appeals be consolidated.
II.
DISCUSSION
A. Reduction in Attorneys’ Fees
The landowners sought an award of costs and attorneys’ fees under 42 U.S.C. § 4654, *634 which provides that in a condemnation action abandoned by the condemnor, the court “shall award” the property owner “such sums as will in the opinion of the court reimburse such owner for his reasonable costs, disbursements, and expenses, including reasonablе attorney ... fees, actually incurred because of the condemnation proceedings.” The landowners contend that because Section 4654 uses the mandatory language “shall award,” an award of attorneys’ fees under this section is not discrеtionary, and a landowner’s computation of hours should be accepted even if there is insufficient documentation absent a specific showing of abuse. We disagree.
Section 4654 provides for the reimbursement of “reasonable” costs аnd fees. This Court’s opinions “havé left reasonably open the question of precisely how the judge ascertains the number of hours reasonably expended” by counsel on a case in which attorneys’ fees are sought.
United States v. Metropolitan Dist. Com.,
The district court indicated that it would employ the lodestar analysis in determining the reasonableness of the fee applications.
Tennessee Gas Pipeline Co.,
Where a district court applies the lodestar method, the fee-seeker must usually provide a particularized account of his claim.
Id.
at 527. “[T]he absence of detаiled contemporaneous time records, except in extraordinary circumstances, will call for a substantial reduction in any award or, in egregious cases, disallowance.”
Grendel's Den, Inc. v. Larkin,
The district court found that the Si-mons’ time sheets were not sufficiently detailed to enable the court to determine whether the fees were excessive or duplica-tive. The district court stated that “[t]he time summaries are replete with time charges for such matters as ‘Confer with co-counsel,’ ‘Confer with client,’ ‘Review materials,’ ‘Review documents,’ and ‘Lеgal Research’ without any indication of the subject matter involved.” The district court explained that in addition to making it impossible for the court to gage whether the task performed was warranted, the failure to include some description of the subjеct matter of the task made it impossible to determine if the time factor allocated was appropriate or excessive. The district court also found that discrepancies in Simons’ submissions raised questions as to their accuracy and whеther such records were kept contemporaneously. The district court clearly explained its findings and the court was justified in reducing the fee award. The court did not abuse its discretion by reducing the award of fees claimed by Simons by thirty percent. We thеrefore affirm the district court’s reduction of Simons’ attorneys’ fees.
B. Prejudgment Interest and other Costs
In the proceedings before the district court, the landowners requested interest on fees and costs from April 29, 1992, the date they had filed their motion for fees and costs. The request for рrejudgment interest was opposed by Tennessee Gas. The district court’s opinion makes no mention of prejudgment interest and the district court’s judg *635 ment did not include any prejudgment interest. The landowners also contend that the district court, without comment and аpparently inadvertently, failed to include in the award an item of $889 for two “round-trip” airfares between Washington, D.C., and Providence, R.I., to permit counsel for the landowners to attend a settlement conference and a meeting on the Tennessee Gas project. According to the landowners, the vouchers for these trips, accompanied by an affidavit describing the purpose of the trips, were submitted to the district court and served on counsel for Tennessee Gas on March 12, 1993.
Because the district court did not advance any reasons for its denial of the landowners’ request for prejudgment interest, or the cost of the airline tickets, we will remand this ease to the district court so that it may determine whether the landowners are entitled to prejudgment interest and to reimbursement for the cost of the airline tickets.
C. Supplemental Fee Application
In its memorandum and order denying the landowners’ supplemental fee application, the district court indicated that ordinarily a litigant should have one opportunity to оbtain fees, but that “[t]here is no reason why a pending application may not be supplemented to the time the court acts on the application.” The court acknowledged that there is no stated time requirement for filing fee appliсations included in 42 U.S.C. § 4601,
et seq.,
but stated that there must be some time limit within which applications must be filed. The court pointed out that the Supreme Court has indicated that fee applications should not result in secondary litigation,
Commissioner, I.N.S. v. Jean,
The landowners contend that neither the Uniform Real Property Acquisition Policies Act nor any other applicable statute imposed a time requirement for filing a fee application, and therefоre, by denying their application as untimely, the district court in effect enunciated a new rule which it unfairly applied retroactively to the landowners. In support of their position, the landowners argue that the amount of the supplemental fee claim was unknown at the time the principal fee application was submitted, and the landowners could not have known precisely what the amount of this claim was until the principal application was resolved. Therefore, they could nоt determine the amount, or submit a supplemental fee application until they had been awarded fees. The landowners also contend, and the record shows, that they advised the court on March 3, 1993 — % months before its preliminary fee appliсation and almost six months before the court entered its judgment regarding the preliminary fee application — that they would submit a supplemental fee application at the appropriate time.
We agree with the district court that there must be some time limit within which a party must file an application for supplemental fees, and we believe that it is reasonable to require, absent any other statutory mandate, that where possible, such application be made before the court acts on the principal fee application. In the present ease, however, where the district court had not previously articulated this novel requirement, where *636 the landowners had advised the court in writing of their intention to file a supplemental fee application, and where Congress has directed district courts to award landowners their reasonable costs and attorneys’ fees incurred because of aborted condemnation proceedings, we agree with the landowners that it would be unfair, and would contravene the Congressional purpose, to apply the district court’s requirement retroactively.
We therefore vacate the district court’s order denying the landowners’ supplemental fee аpplication, and remand for the district court to determine the reasonable fees to be awarded. We further order that any application for fees in connection with this second application be submitted to the district court before the district court acts on the second application.
Affirmed in part; vacated and remanded in part.
