Opinion for the Court by Circuit Judge ROGERS.
The issue in this appeal is whether an agency may withhold documents under Exemption 5 of the Freedom of Information Act (“FOIA”), 5 U.S.C. § 552(b)(5), when it did not invoke the same underlying privilege claims in an ongoing discovery dispute in a different, non-FOIA case in which those documents were withheld as irrelevant. Harry S. Stonehill, through his estate, maintains that the waiver rule requiring all FOIA exemptions to be raised at the same time in the original district court FOIA proceedings, see,
e.g., Maydak v. Dep’t of Justice,
I.
This FOIA casе is intertwined with Stonehill’s effort to obtain vacation of a judgment foreclosing tax liens on his property. He seeks through civil discovery and FOIA to obtain documents that would show that United States law enforcement officials, in resisting a motion to suppress evidence, misrepresented the United States’ involvement in a 1962 raid on Stonehill’s offices in the Philippines by Philippine law enforcement authorities.
See United States v. Stonehill,
Stonehill initially filed a FOIA request with the IRS on July 10, 1998, on behalf of himself and his business associate Robert P. Brooks. He requested all records pertaining to Stonehill and Brooks, including particular documents regarding the early 1960s investigation of their Philippines businesses. The IRS responded that only five responsive documents could be fоund after “thorough research.” Letter from Stephen H. Flesner, Disclosure Officer, Internal Revenue Service, to Robert E. Heg-gestad, Heggestad & Weiss, PC (undated). On January 5, 1999, Stonehill requested additional information regarding IRS materials referenced in documents he had obtained from the State Department. The IRS responded that the documents could not be located and suggested that the Justice Department might be able to provide more helpful documents. Stоnehill filed an administrative appeal and the IRS repeated that the documents could not be located.
On October 2, 2000, based on documents he had received from other agencies in response to his FOIA requests, Stonehill filed a motion pursuant to Federal Rule of Civil Procedure 60(b) in the Central District of California to vacate the tax judgment on the ground it was procured through a fraud on the court. He also
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renewed his FOIA request with the IRS on March 15, 2001. The IRS initially stаyed review, responding only on October 16, 2001, after the district court had denied Stonehill’s Rule 60(b) motion on August 28, 2001. The IRS informed Stonehill that approximately 90 boxes containing responsive documents had been located. On November 26, 2002, the IRS issued a final response to Stonehill’s FOIA request, stating that some documents had been provided to him and others were being withheld or redacted pursuant to FOIA Exemptions 3, 5, 7(C), and 7(D). On June 17, 2003, the IRS General Appeals office issued a partial dеtermination of Stonehill’s appeal, affirming the disclosure officer’s decision that certain exemptions applied while reserving judgment on certain documents withheld under Exemption 3 that were not yet available for review. On September 5, 2003, that office advised Stonehill that it was suspending review of the remaining Exemption 3 documents while the discovery litigation was ongoing in the district court following a remand by the Ninth Circuit,
see Stonehill III,
On December 20, 2005, the California district court granted Stonehill’s motion to compel production of documents and rejected the IRS’s claims that the attorney-client privilege and work product doctrine barred production. The district court ordered the government to “turn over documents regarding the 1966 Tax Division investigation into the government’s role in the 1962 raids.” United States v. Stonehill, No. CV 65-127-PA, at 8 (C.D.Cal. Dec. 20, 2005) (“Stonehill IV”). 1 The district court also denied the motion to compel production of documents involving third-party taxpayer information and some treaty obligation information, as well as some confidential informant information redacted by the Central Intelligence Agency. Id. at 4-8. Although the IRS produced some documents pursuant to the discovery order, those documents were redacted on relevance grounds; other documents were withheld as irrelevant.
On March 31, 2006, Stonehill filed his FOIA cоmplaint in the district court here, seeking production of IRS records from the Stonehill files regarding his former attorney. In an amended complaint he requested additional documents responsive to his 1998 FOIA request. The IRS produced a Vaughn index, invoking Exemptions 3, 5, 6, and 7(C), and moved for summary judgment. In opposing summary judgment, Stonehill argued the IRS was collaterally estopped from raising the same privileges in the FOIA litigation as it raised in the Rule 60 proceeding, and was barred from invoking for thе first time the deliberative process privilege as to 172 documents, as the IRS had not opposed disclosure of any documents based on the deliberative process privilege in the Rule 60 discovery proceeding. He further argued that the IRS could not raise the attorney work product doctrine as to 681 documents, or 26 U.S.C. § 6103, protecting confidentiality of tax information, as a justification for withholding 157 documents under FOIA Exemption 3, because the IRS had not assеrted those grounds for nondisclosure with respect to those particular documents in the Rule 60 proceeding.
The D.C. district court agreed that the IRS was collaterally estopped with respect to documents for which it had claimed the same justifications for nondisclosure in discovery. The California district court’s December 2005 decision had applied the same criteria in assessing the claimed privileges as apply under Exemption 5 and the issue hаd been fully and fairly litigated then. *538 However, the district court rejected Stone-hill’s waiver argument with regard to new privilege claims and granted summary judgment for the IRS.
II.
On appeal, Stonehill urges adoption of a rule that where parallel FOIA and non-FOIA proceedings are pending contemporaneously involving the same documents, the same reviewing body or officer, and the same, equally applicable privileges, failure to raise a privilege in onе proceeding will constitute a waiver in the parallel proceeding, absent compelling circumstances. See Appellant’s Br. at 27. Alternatively, he urges this court to hold that waivers occurred in his case because by not raising the deliberative process and attorney work product privileges in the parallel discovery proceeding, the IRS intentionally relinquished its right to assert them in this FOIA proceeding. Specifically, he points out that despite еarlier opportunities to invoke privileges, the IRS delayed its review and production of documents and conducted unnecessary duplica-tive document reviews in response to his FOIA request, with the result that his effort to gain access to information has been unduly delayed. Now, over a decade after his initial FOIA request, he is confronted with newly invoked FOIA exemptions involving privileges that could have been asserted earlier in resisting discovery.
The requirement for an agency, as a general rule, to invoke all FOIA exemptions ‘“at the same time, in the original distinct court proceedings,’”
August v. FBI,
The FOIA disclosure regime, however, is distinct from civil discovery.
See NLRB v. Sears, Roebuck & Co.,
Given the distinct nature of these two information-gathering regimes, extension of the FOIA waiver rule to discovery proceedings would not advance the policy interest in finality and judicial economy, which is based on FOIA’s goal of prompt disclosure of information.
See, e.g., Senate of Puerto Rico,
First, although the grоunds for nondisclosure underlying FOIA Exemptions 3 and 5 may be invoked in civil discovery, some FOIA exemptions are not applicable to discovery. Even after reviewing documents for privileges in response to a discovery request, an agency could reasonably undertake a separate review to determine whether other exemptions are applicable. Likewise, even those privileges that are available both in discovery and in the FOIA сontext may not be equally applicable in the two proceedings. Therefore, an agency could reasonably reconsider its invocation, or lack thereof, of certain privileges before making determinations in the FOIA litigation. That an agency ultimately may conclude that the privileges are equally applicable would not necessarily mean that it could know this in advance of a separate FOIA-specific review. Similarly, as the IRS did here, an agency may need to assess the applicability of any unwaivable statutory exemptions, like 26 U.S.C. § 6103, which protects confidentiality of tax information.
See August,
Second, the stakes of disclosure are different in the two regimes, justifying and arguably necessitating separate reviews with distinct considerations in mind during each. Documents released in a FOIA action must be made available to the public as a whole,
North,
Extending the waiver rule, then, would not necessarily prevent separate reviews of documents for parallel proceedings involving the same documents and privileges that turn out to be equally applicable. Moreover, even to the extent a waiver rule might eliminate the need for a separate review in response to a FOIA request, the rule itself could result in delay in judicial resolution of the discovery issues while the agency, anticipating the possibility of future FOIA litigation, prepared a
Vaughn
index or developed reasons for objecting to release in a later FOIA case even where those reasons would not be raised in the discovery proceeding; the agency would need to assess all possible privileges even after it determined that the documents were irrelevant to the non-FOIA proceedings. Cf
. North,
Neither would extension of the FOIA waiver rule to discovery proсeedings necessarily advance the second goal of promoting government fairness by requiring the government, in general, to raise all its exemptions at the same time, so that neither the parties nor the court are surprised by assertions of new exemptions, and so that parties have concentrated opportunities to challenge agency attempts to withhold documents.
See Senate of Puerto Rico,
The IRS’s decision to invokе additional privileges in the FOIA litigation is hardly inconsistent with the different stakes involved, as distinct from reflecting a “sinister,”
August,
Given the existing motivations for an agency to be forthright in asserting its justifications for nondisclosure during discovery, extending the FOIA waiver rule to those proceedings would at best have a marginal benefit in terms of ensuring government fairness. Undue delays and du-plicative agency conduct can be prevented through the exercise of district court disсretion,
cf. Laborers’ Int’l Union of N. Am. v. Dep’t of Justice,
Although Stonehill was confronted in the FOIA action with new objections to disclosure long after he made his FOIA request, even the particular circumstances of his case do not show that extending the waiver rule to discovery would advance the relevant policy goals, much less that there was a waiver by the IRS. Assuming the IRS’s stay of his administrative FOIA appeal pending resolution of the discovery proceedings was unfair to the extent it postponed resolution of asserted FOIA exemptions, the stay also arguably facilitated the efficient use of judicial resources by avoiding delays in the discovery proceeding attendant to agency reviews influenced by FOIA demands. The district court’s application of estoppel principles in the FOIA action avoided further delay and conserved judicial resources regarding privileges that had already been litigated and decided. In any event, the stay alone does not show an improper motivation by the IRS.
Cf. Boyd v. Criminal Division of the U.S. Dep’t of Justice,
Finally, Stonehill’s proposal to extend the FOIA waiver rule to discovery proceedings fails to take into account that
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the waiver rule is not rigidly applied. Rather, the court sometimes excuses apparent waivers based on extraordinary circumstances, in recognition of the fact that “although FOIA strongly favors prompt disclosure, its nine enumerated exemptions are designed to protect those ‘legitimate governmental and private interests’ that might be ‘harmed by release of certain types of information.’”
August,
Congress has addressed concerns about delays in civil proceedings in the Civil Justice Reform Act of 1990, see 28 U.S.C. §§ 471-73, and district court rules reflect such efforts, see, e.g., D.D.C. R. 16.3 (pretrial conference requirement, largely mirroring D.D.C. Civil Justice Expense and Delay Reduction Plan, eff. Mar. 1, 1994). But delays attendant to information-gathering regimes may often simply be the result of additional searches for documents as well as additional document reviews. Some delay may be reduced, as occurred here, through the district court’s exercise of discretion to facilitate production of documents and to eliminate needless relitigation through application of equitable estop-pel principles. Although the IRS did not рroduce 90 boxes of documents until after the California district court denied Stone-hill’s Rule 60(b) motion, and then stayed the administrative appeal pending the district court’s discovery decision on remand, Stonehill does not suggest that the IRS would have located the documents sooner or proceeded without staying the FOIA appeal had the FOIA waiver rule applied to discovery. Any unfairness caused by release of requested documents after Stonehill’s death is mitigated by his estate’s vigorous pursuit of his claims. Considering the circumstances as a whole, then, we are not persuaded that the court should link the two information-gathering regimes through a waiver rale when doing so would not necessarily advance the policy goals underlying the rule. Delays within the FOIA regime, Stonehill’s principal focus, do not provide a rationale for linking its waiver rule to discovery where different considerations are involved. Accordingly, we affirm the grant of summary judgment.
Notes
. The case is lodged in the United States District Court for the District of Oregon.
