CHURCH OF SCIENTOLOGY OF CALIFORNIA, Plaintiff,

                                       v.

                      INTERNAL REVENUE SERVICE, Defendant.

                              Civ. A. No. 80-3239.

                          United States District Court,

                              District of Columbia.

                                 June 24, 1983.

  Taxpayer brought action under the Freedom of Information Act to compel

 Internal Revenue Service to release certain documents claimed by agency to be

 exempt from disclosure.  On Internal Revenue Service's motion for summary

 judgment, the District Court, Norma Holloway Johnson, J., held that:  (1)

 taxpayer was estopped from relitigating its claim to access to documents at

 issue in prior proceeding;  (2) Internal Revenue Service demonstrated that its

 withholding of certain documents was rational and not beyond bounds of its

 discretionary authority under provision of Internal Revenue Code governing

 disclosure of return information to persons having material interests therein;

 and (3) Internal Revenue Service's efforts to locate materials responsive to

 taxpayer's request were reasonable and adequate as a matter of law.

  Ordered accordingly.



 [1] JUDGMENT

 Taxpayer was estopped under doctrine of res judicata from relitigating its

 claim to access to documents sought in prior Freedom of Information Act action,

 in view of fact that defendant Internal Revenue Service had no duty to justify

 new bases for nondisclosure of documents at issue in prior action.  5

 U.S.C.A. s 552 et seq.



 [2] INTERNAL REVENUE

 Documents relating to ongoing litigation in United States Tax Court but

 generated or received by defendant Internal Revenue Service subsequent to its

 preparation of index in Tax Court case constituted return information within

 statutory definition.  26 U.S.C.A. ss 6103 et seq., 6103(b)(2),

 (b)(2)(A), 7213.



 [3] INTERNAL REVENUE

 Provision of Internal Revenue Code governing disclosure of return information

 to persons having material interests therein is sole standard governing

 disclosure or nondisclosure of tax return information, notwithstanding Freedom

 of Information Act.  5 U.S.C.A. s 552 et seq.;  26 U.S.C.A. s 6103 et

 seq.



 [4] INTERNAL REVENUE

 Since revelation of certain documents pertaining to ongoing tax court

 litigation would affect defendant Internal Revenue Service's ability to defend

 its position in that litigation, IRS had demonstrated that its withholding of

 documents from taxpayer was rational, and not beyond bounds of its

 discretionary authority under provision of the Internal Revenue Code governing

 disclosure of return information to persons having material interests

 therein.  26 U.S.C.A. s 6103 et seq.



 [5] RECORDS

 In determining whether claim of exemption for clearly unwarranted invasion of

 privacy under Freedom of Information Act exemption may properly be asserted,

 court must balance plaintiff's interest in disclosure, public interest in

 disclosure, degree of invasion of personal privacy, and availability of any

 alternative means of obtaining requested information.  5 U.S.C.A. s

 552(b)(6).



 [6] RECORDS

 Portions of eight documents generated or received by defendant Internal Revenue

 Service subsequent to its preparation of index submitted in tax court case, but

 not relating to ongoing tax court litigation, were exempt from disclosure under

 section of the Freedom of Information Act exempting from disclosure matters

 that are personnel and medical files and similar files the disclosure of which

 would constitute a clearly unwarranted invasion of personal privacy.  5

 U.S.C.A. s 522(b)(6).



 [7] INTERNAL REVENUE

 Under provision of Internal Revenue Code governing disclosure of return

 information to persons having material interests therein, return information

 may be disclosed to third parties at discretion of agency if such parties can

 demonstrate that they are acting in capacity of designee of individual

 taxpayer.  26 U.S.C.A. s 6103 et seq.



 [8] RECORDS

 Defendant Internal Revenue Service properly construed relevant statutory and

 regulatory requirements in determining that scope of taxpayer's Freedom of

 Information Act request was limited to data pertaining to it.  5 U.S.C.A. s

 552 et seq.



 [9] INTERNAL REVENUE

 Excised portions of certain documents were properly withheld by Internal

 Revenue Service from taxpayer since they all related to individuals and

 entities other than taxpayer.  5 U.S.C.A. s 552 et seq.



 [10] RECORDS

 Request for information under the Freedom of Information Act does not impose

 burden upon agency to reorganize its files, but does impose a firm statutory

 duty to make reasonable efforts to satisfy a FOIA request.  5 U.S.C.A. s 552

 et seq.



 [11] RECORDS

 Efforts of defendant Internal Revenue Service to locate materials responsive to

 taxpayer's request under Freedom of Information Act were reasonable and

 adequate as a matter of law.  5 U.S.C.A. s 552 et seq.



 [12] RECORDS

 Since taxpayer in Freedom of Information Act action could not be found to have

 met threshold requirement that it substantially prevailed, it was not entitled

 to award of attorney fees.  5 U.S.C.A. s 552 et seq.

  *1166 George T. Volsky, Washington, D.C., for plaintiff.

  John J. McCarthy, Edward J. Snyder, Richard L. Switzer, U.S. Dept. of Justice,

 Tax Div., Washington, D.C., for defendant.

                               MEMORANDUM OPINION



  NORMA HOLLOWAY JOHNSON, District Judge.

  Plaintiff Church of Scientology of California (hereinafter California Church)

 brings this action under the Freedom of Information Act (FOIA) [FN1] to compel

 the Internal *1167 Revenue Service (IRS) to release certain documents

 claimed by that agency to be exempt from disclosure under FOIA.  This matter is

 now before the Court on defendant's motion for summary judgment. [FN2]  For the

 reasons set forth herein, the Court finds that no material issues of fact

 remain in dispute, and that defendant is entitled to summary judgment as a

 matter of law.  Accordingly, defendant's motion for summary judgment will be

 granted.



      FN1. 5 U.S.C. s 552 et seq. (1976 & Supp V 1981).



      FN2. Arthur L. Lappen, Chief Branch 3 Disclosure Litigation Division, IRS,

     has been dropped as a named defendant in this action at the plaintiff's

     request.



                                     DISCUSSION

  I. Plaintiff's FOIA Request

  In its original request under FOIA submitted on May 16, 1980, plaintiff sought

 the release of virtually all materials contained in IRS files nationwide

 which pertained specifically to the California Church, and to Scientology, in

 general. [FN3]  Included within the scope of plaintiff's request were documents

 sought by plaintiff in its First Request of Production of Documents in an

 ongoing action before the United States Tax Court entitled Church of

 Scientology of California v. Commissioner of IRS, Docket No. 3352-78

 (U.S.T.C.) (hereinafter referred to as Tax Court case).  Plaintiff's FOIA

 request thereby included all materials received or generated by IRS in

 connection with the Tax Court case, as well as materials indexed, but adjudged

 exempt from disclosure, in a previous FOIA action entitled Church of

 Scientology of California v. IRS, Civil No. CV 74-3465-RJK (C.D.Cal. October

 29, 1976), appeal dismissed, No. 77-1365 (9th Cir.1978) (hereinafter

 referred to as a FOIA I).



      FN3. Plaintiff's May 16, 1980, FOIA request sought

     Copies of all information relating to or containing the names of

     Scientology, Church of Scientology, any specific Scientology Church or

     entity identified by containing the words Scientology, Hubbard, and/or

     Dianetics in their names, L. Ron Hubbard or Mary Sue Hubbard in the form of

     a written record, correspondence, document, memorandum, form, computer

     tapes, computer program or microfilm;  which is contained in any of the

     following systems of records, including but not limited to those located at

     the National office, Regional offices, Service Centers, District offices,

     or local IRS offices [four page list identifying IRS record systems by

     appropriate code numbers is omitted].

     Plaintiff also sought IRS personnel training materials located in

     Covington, Kentucky, and requested the release of "copies of file labels or

     tabs identifying any and all files containing information requested

     herein."  Letter of Rev. James Morrow to Chief, Disclosure Staff, IRS,

     dated May 16, 1980.



  In its May 16, 1980, request, plaintiff acknowledged that the volumes of

 materials involved would make it impossible for the IRS to respond within the

 statutory ten-day period, but asked that the California Church be apprised of

 an anticipated schedule for response.  IRS wrote to plaintiff on July 22, 1980,

 to ask plaintiff to agree to a voluntary extension of defendant's time for

 response until August 29, 1980.  Plaintiff filed an appeal with IRS on

 September 17, 1980, after no further response from IRS had been forthcoming.

 Plaintiff did not await defendant's response to the appeal, but instead

 commenced the instant action.

  Defendant's determination of plaintiff's FOIA appeal was issued on January 14,

 1981.  The scope of plaintiff's FOIA request was found to be properly limited

 to materials pertaining to the California Church, and the proper extent of

 the agency's search was found to be limited to the IRS National office. [FN4]

 Further, defendant construed *1168 plaintiff's FOIA request as encompassing

 materials falling into four categories:  (1) those documents withheld from

 disclosure and adjudged exempt in FOIA I;  (2) those documents indexed in

 connection with the Tax Court case and relating to that case;  (3) those

 documents generated subsequent to the Tax Court case;  and (4) any documents

 relating to the California Church which were generated subsequent to the Tax

 Court case index and are located in the IRS National office.  Letter of Gerald

 G. Portney, Assistant Commissioner (Technical), IRS to Rev. James Morrow, dated

 January 14, 1981, p. 3.  Defendant denied plaintiff's appeal in substantial

 part after determining that (1) principles of res judicata and collateral

 estoppel barred plaintiff from relitigating its claim to access to FOIA I

 documents;  and (2) the remaining documents at issue were exempt from

 disclosure under 26 U.S.C. s 6103 et seq. (1976 & Supp. V 1981) and 5

 U.S.C. s 552(b)(6) (1976 & Supp. V 1981).



      FN4. Although defendant limited its search to its National office,

     defendant did search and locate documents lodged in Covington, Kentucky,

     and in the offices of the District Counsel for Los Angeles.  The other

     sites searched by defendant included the following:  Offices of the

     Commissioner;  Deputy Commissioner;  Assistant Commissioner (Compliance);

     Assistant Commissioner (Technical);  Assistant Commissioner (Employee

     Plans/Exempt Organizations);  Assistant Commissioner (Inspection);  Audit

     Division;  Criminal Investigation Division;  Office of International

     Operations;  Covington, Kentucky office;  Returns Processing and Accounting

     Division;  Collection Division;  Appeals Division;  Chief Counsel;  Deputy

     Chief Counsel (Administrative);  Deputy Chief Counsel (Technical);  Deputy

     Chief Counsel (Litigation);  Administrative Services;  Criminal Tax

     Division;  Disclosure Litigation Division;  Employee Plans and Exempt

     Organization Division;  General Litigation Division;  Interpretive

     Division;  Legislation and Regulations Division;  and Tax Litigation

     Division.



  On June 18, 1982, the Court denied plaintiff's motion for a detailed

 justification, itemization and indexing by the defendant of the withheld

 materials as approved by the Court in Vaughn v. Rosen, 484 F.2d 820

 (D.C.Cir.1973), cert. denied, 415 U.S. 977, 94 S.Ct. 1564, 39 L.Ed.2d 873

 (1974), and granted defendant's motion to submit for in camera inspection

 certain documents located at the IRS National office.  The Court also ordered,

 sua sponte, that all documents responsive to plaintiff's request and related to

 the Tax Court case be submitted for in camera review.  Submission of the

 documents within the scope of the Court's June 18, 1982, Order has been

 accomplished, and defendant now urges the Court to find that the documents

 remaining at issue are properly exempt from disclosure. [FN5]



      FN5. Plaintiff no longer seeks disclosure of the documents indexed by

     defendant in the Tax Court case.



  II. Defendant's Motion For Summary Judgment

  A. FOIA I Documents

  In moving for summary judgment, defendant first contends that plaintiff is

 barred by the operation of the doctrine of res judicata from relitigating its

 claim to access of the documents at issue in FOIA I.  In opposition, plaintiff

 asserts that defendant must demonstrate that the res judicata effect of the

 final judgment in FOIA I has not been suspended by subsequent material changes

 in law or fact.  Plaintiff has, however, cited no authority which supports its

 contention that the burden falls upon the defendant to prove that the absence

 of any material changes in circumstances leaves undisturbed the bar to

 relitigation erected by the prior judgment.

  [1] In Commissioner of Internal Revenue v. Sunnen, 333 U.S. 591, 68 S.Ct.

 715, 92 L.Ed. 898 (1948), the Court considered the applicability of res

 judicata and collateral estoppel doctrines to determinations of income tax

 liability in different tax years.  The Court held that in the interest of

 justice, the operation of collateral estoppel "must be confined to situations

 where the matter raised in the second suit is identical in all respects with

 that decided in the first proceeding and where the controlling facts and

 applicable legal rules remain unchanged."  Id., at 600, 68 S.Ct. at 720

 (citations omitted).  The instant case presents the very situation defined in

 Sunnen as one in which the operation of collateral estoppel is appropriately

 confined.  There is no question that the documents at issue in both FOIA I and

 the instant case are identical, as are the parties.  Further, defendant does

 not seek to assert claims of exemption different from those asserted in FOIA I,

 see Wolfe v. Froehlke, 358 F.Supp. 1318, 1319-20 (D.D.C.1973), affirmed,

 510 F.2d 654 (D.C.Cir.1974) (res judicata not a bar to relitigation of

 plaintiff's claim to access to document under FOIA when agency asserts new

 basis for exemption from disclosure).  Plaintiff in the instant case correctly

 cites Sunnen for the proposition that the binding *1169 effect of a prior

 final judgment might be altered or even nullified by a "subsequent modification

 of the significant facts or a change or development in the controlling legal

 principles..."  Id., 333 U.S. at 599, 68 S.Ct. at 720.  Plaintiff, however,

 has not even alleged that any such modification in law or fact has occurred

 with regard to this action.  Nothing in the legislative history of FOIA or the

 language of that Act suggests that a defendant in an action brought under FOIA

 who alleges res judicata as an affirmative defense bears a special burden of

 proving that documents already adjudged exempt remain exempt.  See Church of

 Scientology of California v. U.S. Dep't of the Army, et al., 611 F.2d 738, 750

 fn. 7 (D.C.Cir.1979).  Where the issues, documents, and plaintiffs are

 identical in both the prior and present FOIA litigation, "[t]he issue of

 exemption cannot be relitigated."  Id. at 751.  The Court notes that

 defendant, in responding to plaintiff's FOIA request in the action sub judice,

 reviewed the 290 documents found to be exempt from disclosure in FOIA I and

 identified twenty of that total number which had been withheld in full or in

 part on the basis of 5 U.S.C. s 552(b)(7)(A). [FN6]  Affidavit of Charles W.

 Rumph, Technical Advisor, Tax Litigation Director, IRS, P 2.  These twenty

 documents were then reviewed, and defendant concluded that Exemption (b)(7)(A)

 no longer provided a basis for non-disclosure.  Id., P 3.  All documents

 previously withheld solely on the basis of Exemption (b)(7)(A) were, therefore,

 released by the defendant.  Id.  Plaintiff's contention that defendant's

 failure to justify anew the bases for non-disclosure of the documents at issue

 in FOIA I must, therefore, be rejected as without merit, and the Court must

 find that plaintiff is estopped from relitigating its claim to access to the

 FOIA I documents.



      FN6. Exemption (b)(7)(A) exempts from disclosure under FOIA those

     documents which constitute "investigatory records compiled for law

     enforcement purposes, but only to the extent that the production of such

     records would (A) interfere with enforcement proceedings..."  5 U.S.C. s

     552(b)(7)(A) (1976 Supp. V 1981).



  B. Documents Pertaining to Ongoing Tax Court Litigation

  Although plaintiff has dropped its claim to documents indexed by the defendant

 in the ongoing litigation in the U.S. Tax Court, a substantial number of

 documents relating to that action but generated or received by defendant

 subsequent to its preparation of the index in the Tax Court case remain in

 dispute.  Defendant contends that the documents constitute confidential tax

 return information within the meaning of 26 U.S.C. s 6103 et seq. (1976 &

 Supp. V 1981) and, as such, are exempt from disclosure.

  [2] The first question presented with respect to these "post-index"

 documents is whether they can, indeed, be properly characterized as

 confidential tax return information within the definition of 26 U.S.C. s

 6103(b)(2)(A). [FN7]  The Court's in camera examination of a representative

 number of the documents in question reveals that the documents each identify a

 specific taxpayer, and contain "private facts taken directly from tax returns

 or IRS comment upon the private tax situations of specific taxpayers."  King

 v. IRS, 688 F.2d 488, 494 (7th *1170 Cir.1982).  See also Neufeld v. IRS,

 646 F.2d 661 (D.C.Cir.1981).  The Court concludes, therefore, that these "post-

 index" documents clearly constitute return information within the statutory

 definition.



      FN7. "Return information" is defined as encompassing

     a taxpayer's identity, the nature, source or amount of his income,

     payments, receipts, deductions, exemptions, credits, assets, liabilities,

     net worth, tax liability, tax withheld, deficiencies, overassessments, or

     tax payments, whether the taxpayer's return was, is being, or will be

     examined or subject to other investigation or processing, or any other data

     received by, recorded by, prepared by, furnished to, or collected by

     Secretary with respect to a return or with the determination of the

     existence, or possible existence, of liability (or the amount thereof) of

     any person under this title for any tax, penalty, interest, fine,

     forfeiture, or other imposition, or offense...

     26 U.S.C. s 6103(b)(2)(A) (1976 & Supp. V 1981).  Criminal penalties

     attach to the unauthorized disclosure of data as set forth in s 6103.

     26 U.S.C. s 7213.  In addition to the specified instances where

     disclosure is authorized, disclosure of data under s 6103 may be made

     "in a form which cannot be associated with, or otherwise identify, directly

     or indirectly, a particular taxpayer."  s 6103(b)(2).



  Having concluded that the contested materials are return information, it must

 be determined to what extent, if any, the provisions of section 6103 affect

 plaintiff's claim to access to those materials under FOIA.  Defendant relies

 on Zale v. IRS, 481 F.Supp. 486 (D.D.C.1979) to support its contention that

 the "particularized disclosure scheme" of section 6103 effectively pre-empts

 the more general disclosure criteria of FOIA.  Id. at 489.  Defendant thus

 contends that in accordance with Zale, the Court's review of defendant's

 decision to withhold the return information sought by plaintiff will not be

 subject to the de novo review available under FOIA, but will properly be

 limited to the determination of whether "the decision to withhold was ... an

 arbitrary or unconscionable abuse of discretion."  Id. at 490.

  [3] This Court has had the opportunity to consider the applicability of FOIA

 to disclosure requests for confidential return information in a prior action

 entitled Service Employees International Union v. IRS, No. 82-1081 (decided

 January 1, 1981).  Consistent with the decision in that action, the Court today

 again adopts the rationale of Zale in holding that section 6103 "must be

 viewed as the sole standard governing release of tax return information."

 Zale v. IRS, 481 F.Supp. at 490.  Accord King v. IRS, 688 F.2d 488 (7th

 Cir.1982);  Anheuser-Busch, Inc. v. IRS, 493 F.Supp. 549 (D.D.C.1980);  but

 see, e.g. Britt v. IRS, 547 F.Supp. 808 (D.D.C.1982).

  [4] The Court must, therefore, determine whether defendant's decision to

 withhold the "post-index" documents can be upheld as rational and supported in

 the record.  Section 6103 provides but a few limited exceptions to the

 general prescription of confidentiality of return information.  Disclosure of

 return information may be made to persons deemed to have a "material interest"

 in such information as defined under section 6103(e)(1) [FN8], barring a

 determination by the IRS that disclosure "would seriously impair Federal tax

 administration."  26 U.S.C. s 6103(c) and (e)(6) (1976 & Supp. V 1981).  In

 the instant action, defendant concedes that plaintiff has a material interest

 in the documents in question, but has determined that disclosure would

 seriously interfere with defendant's duties in connection with the ongoing Tax

 Court litigation by revealing its litigation strategy and attorney work

 products.  In view of the ongoing nature of the Tax Court litigation, and after

 in camera inspection of a representative number of the relevant documents, the

 Court finds that those documents do relate to defendant's litigation strategy,

 and reflect the work product of attorneys employed by the defendant.  Since

 revelation of the documents would thus affect the defendant's ability to defend

 its position in the Tax Court case, the Court finds that defendant has

 demonstrated that its withholding of the documents was rational, and not beyond

 the bounds of its discretionary authority under section 6103. [FN9]



      FN8. 26 U.S.C. s 6103(e)(1) (1976 & Supp. V 1981).  Individual

     taxpayers are deemed to have a "material interest" in disclosure of their

     own return information under section 6103(e)(1).



      FN9. Even assuming, arguendo that section 6103 must be viewed as a

     qualifying exempting statute under 5 U.S.C. s 552(b)(3), see e.g.

     Chamberlain v. Kurtz, 589 F.2d 827 (5th Cir.1979), cert. denied, 444

     U.S. 842, 100 S.Ct. 82, 62 L.Ed.2d 54 (1979), and that judicial review

     would thus be in accord with the provisions of FOIA, the Court is persuaded

     after its in camera inspection of the pertinent documents that defendant's

     non-disclosure is not improper under the criteria of either section 6103

     or FOIA Exemption 3.



  C. Disclosure of Documents From IRS National Office

  Defendant has located and indexed twenty-one documents in its National office

 which are responsive to plaintiff's FOIA request.  These documents were

 generated or received by defendant subsequent to its preparation of the index

 submitted in the Tax Court case, but do not relate to the *1171 ongoing Tax

 Court litigation.  Ten of the twenty-one documents have been released in full;

 portions of the remaining eleven documents have been withheld by the defendant.

  Defendant contends that the deleted portions of eight of the eleven documents

 at issue are exempt from disclosure under 5 U.S.C. s 552(b)(6) ("Exemption

 6"), which exempts from disclosure under FOIA matters that are "personnel and

 medical files and similar files the disclosure of which would constitute a

 clearly unwarranted invasion of personal privacy."  5 U.S.C. s

 552(b)(6) (1976 & Supp. V 1981).

  [5][6] In determining whether a claim of exemption for a "clearly

 unwarranted invasion of privacy" under FOIA Exemption 6 may properly be

 asserted, a court must balance "(1) the plaintiff's interest in disclosure;

 (2) the public interest in disclosure;  (3) the degree of the invasion of

 personal privacy;  and (4) the availability of any alternative means of

 obtaining the requested information."  Church of Scientology of California

 v. Dept. of the Army, et al., 611 F.2d 738, 746 (9th Cir.1979).  See

 Department of The Air Force v. Rose, 425 U.S. 352, 96 S.Ct. 1592, 48 L.Ed.2d

 11 (1976);  Rural Housing Alliance v. U.S. Dep't of Agriculture, 498 F.2d

 73 (D.C.Cir.1974).  The Court has examined in camera those portions of each of

 the eight documents claimed by defendant to be exempt under Exemption 6 and has

 concluded that the balance of factors clearly weighs in favor of non-disclosure

 by the defendant.

  Document A-1 is comprised of "log cards" maintained by defendant.  Document A-

 6 is a ten-page document dealing largely with a draft legal opinion concerning

 plaintiff's tax-exempt status.  Document A-10 consists primarily of a letter to

 Senator Inouye from the Acting Director of defendant's Tax Litigation

 Division.  Document A-12 is a two-page memorandum concerning a prior summons

 enforcement suit against the plaintiff.  Documents A-13 and A-15 are

 "buckslips" concerning litigation against the plaintiff.  Document A-15 is a

 single-page handwritten memorandum relating to defendant's response to

 plaintiff's motion for summary judgment.  Document A-18 is a transmittal

 memorandum dealing with the filing of defendant's answer in the Tax Court case.

  In each of the documents described above, the excised portions consist of the

 names of attorneys and other personnel employed by the defendant.  The Court

 agrees with the defendant that the interest of plaintiff and the public in

 knowing which attorneys and other personnel have been assigned to certain cases

 is de minimus when weighed against the interest of the individuals involved in

 maintaining anonymity as a means of avoiding potential harassment and find,

 therefore, that the excised portions are exempt from disclosure under Exemption

 6.

  Portions of Documents A-9 and A-21 have also been withheld by defendant on the

 basis that the excised data constitute confidential third-party return

 information whose release to plaintiff is unauthorized under 26 U.S.C. s

 6103(a) (1976 & Supp. V 1981).  A single deletion in Document A-6 is also

 claimed by defendant to be proper on this basis.  Document A-20 has also been

 partially withheld as being outside the scope of plaintiff's request.

 Defendant's claims of exemption with respect to these four documents thus raise

 the threshold question of whether defendant has properly construed the scope of

 plaintiff's FOIA request to exclude all materials not pertaining to the

 California Church.

  [7] As discussed, infra, the Court finds that defendant's non-disclosure of

 data constituting return information within the definition of 26 U.S.C. s

 6103(b)(2)(A) is subject to judicial review in accordance with the criteria set

 forth under section 6103.  Under section 6103, return information may be

 disclosed to third-parties at the discretion of the agency if such parties can

 demonstrate that they are acting in the capacity *1172 of designee of the

 individual taxpayer. [FN10]  It is undisputed that in its May 16, 1980, FOIA

 request, plaintiff's representative provided defendant with the authorization

 of only the California Church.  Defendant asserts that release to plaintiff of

 any return information pertaining to the individuals and Scientology entities

 other than the California Church as listed in plaintiff's request is

 unauthorized and, therefore, proscribed under section 6103.



      FN10.  Section 6103(c) provides:

     The Secretary may, subject to such requirements and conditions as he may

     prescribe by regulations, disclose the return of any taxpayer, or return

     information with respect to such taxpayer, to such person or persons as the

     taxpayer may designate in a written request for or consent to such

     disclosure, or to any other person at the taxpayer's request to the extent

     necessary to comply with a request for information or assistance made by

     the taxpayer to such other person.  However, return information shall not

     be disclosed to such person or persons if the Secretary determines that

     such disclosure would seriously impair Federal tax administration.

     See also 26 U.S.C. s 6103(e)(6) (1976 & Supp. V 1981);  26 C.F.R. s

     601.702(c)(4)(ii)(c) (1982).



  An actionable request under FOIA for records in the possession of the IRS is

 defined under 26 C.F.R. s 601.702(c)(1) (1982) as one "which conforms in

 every respect with the rules and procedures set forth in this subpart."  A FOIA

 request which includes within its scope materials properly classified as

 "return information" under section 6103 must "establish the identity and the

 right of the person making the request to the disclosure of the records..."

 26 C.F.R. s 601.702(c)(v) (1982).  Plaintiff concedes that in accordance

 with these pertinent statutory and regulatory requirements, defendant is

 obligated to protect against the unauthorized disclosure of third-party return

 information, but contends that the California Church is so "clearly related" to

 the third parties at issue as to make additional authorization superfluous.

 Plaintiff also asserts that defendant was required by its own regulations to

 request the additional authorizations from plaintiff at the time it first

 determined such proofs were necessary, and before defendant responded to

 plaintiff's FOIA request.

  [8][9] The regulatory language quoted by the plaintiff in support of this

 latter contention provides in relevant part:

   Additional proof of a person's identity shall be required before the request

 will be deemed to have met the requirement of paragraph (c)(3)(v) of this

 section if it is determined that additional proof is necessary to protect

 against unauthorized disclosure of information in a particular case.

  26 C.F.R. s 601.702(c)(4)(ii)(C) (1982).  The Court finds that the plain

 language of the cited regulation is devoid of any requirement that defendant

 notify a requester such as plaintiff of the need for additional proof prior to

 responding to a FOIA request encompassing third-party data.  We conclude,

 therefore, that defendant properly construed the relevant statutory and

 regulatory requirements in determining that the scope of plaintiff's FOIA

 request was limited to data pertaining to the California Church.  In view of

 defendant's conceded obligation to protect against the unauthorized disclosure

 of third-party return information, the Court finds that the plaintiff's

 contention that additional proof would be superfluous is without merit. [FN11]

 Having determined that the scope of plaintiff's request was properly construed

 by defendant as limited to documents relating to the California Church, the

 Court turns to the portions of the four documents withheld from disclosure as

 outside the proper scope of plaintiff's request.  After an in camera

 examination of these four documents in their entirety, it is clear that the

 excised portions all relate to individuals and entities other than the

 California Church.  The Court thus finds that the excised portions were

 properly withheld.



      FN11. That plaintiff's contention is without merit is particularly

     apparent when the absence of any indication by plaintiff of any legal

     relationship between plaintiff and the third-parties at issue is

     considered.



  [10] The sole remaining question concerning defendant's response to

 plaintiff's *1173 request is whether defendant has demonstrated, as a matter

 of law, that its search for responsive documents was adequate.  Plaintiff

 contends that the Court cannot find defendant's search to be adequate in view

 of defendant's arbitrary and capricious refusal to search all IRS field

 offices.  It is established in this Circuit that a request for information

 under FOIA does not impose a burden upon an agency to reorganize its files,

 "but does [impose] a firm statutory duty to make reasonable efforts to satisfy"

 a FOIA request.  Founding Church of Scientology v. NSA, 610 F.2d 824, 837

 (D.C.Cir.1979).  (Emphasis added).  The Court must, therefore, test the

 adequacy of defendant's search in the instant case against a standard of

 reasonableness.  See McGehee v. CIA, 697 F.2d 1095 (D.C.Cir.1983).  It is

 undisputed that plaintiff directed its May 16, 1980, FOIA request to

 defendant's National office.  In its FOIA request, plaintiff stated that "this

 request is being directed to the National office so proper coordination and

 handling can occur."  Letter of Rev. Morrow to Chief, Disclosure Staff, IRS,

 p. 7.  No similar request was made by plaintiff to each IRS field office, as

 required under 26 C.F.R. s 601.702(c)(iii) (1982).

  [11] From the variety of offices searched by the defendant, it is evident

 that there is no single office or recordkeeping system which is the repository

 of all data relating to the California Church. [FN12]  Defendant has produced

 for in camera inspection a voluminous amount of materials responsive to

 plaintiff's request.  The record in this action reflects that these documents

 were located through a search of all the offices specifically identified by

 plaintiff in its request, including the Covington, Kentucky, office where IRS

 personnel have received instruction in audit procedures affecting plaintiff.

 In addition, defendant searched the District Counsel offices in Los Angeles,

 the IRS district in which plaintiff is located.  Plaintiff's assertions that

 the extent of defendant's search was inadequate would thus appear to bear only

 upon its claims, rejected today, for materials relating to individuals and

 entities other than the California Church.  In view of all of the foregoing

 considerations, the Court finds that plaintiff has failed to raise a genuine

 dispute on the issue of the adequacy of defendant's search.  The Court

 concludes, therefore, that defendant's efforts to locate materials responsive

 to plaintiff's request were reasonable and, therefore, adequate as a matter of

 law.



      FN12. The Court also notes that the documents sought by the plaintiff are

     not summaries or other compilations effected by defendant which might

     conceivably be lodged at a central site.



  [12] The final issue before the Court is plaintiff's claim for the award of

 attorney fees.  It is well-established that, at a minimum, an award of

 reasonable attorney fees to a plaintiff in a FOIA action must be based upon the

 finding that such plaintiff has "substantially prevailed."  See, e.g.,

 Chamberlain v. Kurtz, 589 F.2d 827 (5th Cir.1979), cert. denied 444 U.S.

 842, 100 S.Ct. 82, 62 L.Ed.2d 54 (1979).  It is clear that since plaintiff in

 this action cannot be found to have met this threshold requirement, plaintiff

 is not entitled the award of attorney fees.

  An Order consistent with this Memorandum Opinion will be entered on this date.

                                      ORDER

  Upon consideration of the motion by defendant for summary judgment,

 plaintiff's opposition thereto, supporting and opposing memoranda of law and

 affidavits, the in camera inspection of documents at issue in the above-

 entitled action, and the entire record herein, it is this 24th day of June,

 1983,

  ORDERED that defendant's motion for summary judgment be, and hereby is,

 granted;  and it is further

  ORDERED that this action be, and hereby is, dismissed with prejudice.