Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
LEHMAN BROTHERS HOLDINGS INC
  2. Issuer Name and Ticker or Trading Symbol
PACIFIC ENERGY PARTNERS LP [PPX]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
_____ Officer (give title below) __X__ Other (specify below)
See Remark (1)
(Last)
(First)
(Middle)
745 SEVENTH AVENUE
3. Date of Earliest Transaction (Month/Day/Year)
05/16/2005
(Street)

NEW YORK, NY 10019
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Subordinated Units Representing Limited Partner Interests (1) 05/16/2005(2)   J(3)     211,004 (4)   (5)   (6) Common Units Representing Limited Partner Interests 211,004 (7) 1,839,545 (8) (9) I By LB Pacific, LP (10)
Subordinated Units Representing Limited Partner Interests (1) 05/16/2005(2)   J(3)     211,004 (4)   (11)   (6) Common Units Representing Limited Partner Interests 211,004 (7) 1,829,545 (8) (9) I By LB Pacific, LP (10)
Subordinated Units Representing Limited Partner Interests (1) 05/16/2005(2)   J(3)     422,007 (4)   (12)   (6) Common Units Representing Limited Partner Interests 422,007 (7) 3,659,090 (13) (14) I By LB Pacific, LP (10)
Subordinated Units Representing Limited Partner Interests (1) 05/16/2005(2)   J(3)   211,004 (4)     (5)   (6) Common Units Representing Limited Partner Interests 211,004 (7) 1,829,545 (8) (9) I By LB Pacific, LP (10)
Subordinated Units Representing Limited Partner Interests (1) 05/16/2005(2)   J(3)   211,004 (4)     (11)   (6) Common Units Representing Limited Partner Interests 211,004 (7) 1,829,545 (8) (9) I By LB Pacific, LP (10)
Subordinated Units Representing Limited Partner Interests (1) 05/16/2005(2)   J(3)   422,007 (4)     (12)   (6) Common Units Representing Limited Partner Interests 422,007 (7) 3,659,090 (13) (14) I By LB Pacific, LP (10)
Subordinated Units Representing Limited Partner Interests (1) 06/30/2005(2)   J(15)     16,442 (16)   (5)   (6) Common Units Representing Limited Partner Interests 16,442 (17) 1,829,545 (14) (18) I By LB Pacific, LP (10)
Subordinated Units Representing Limited Partner Interests (1) 06/30/2005(2)   J(15)     16,442 (16)   (11)   (6) Common Units Representing Limited Partner Interests 16,442 (17) 1,829,545 (14) (18) I By LB Pacific, LP (10)
Subordinated Units Representing Limited Partner Interests (1) 06/30/2005(2)   J(15)     32,884 (16)   (12)   (6) Common Units Representing Limited Partner Interests 32,884 (17) 3,659,090 (14) (19) I By LB Pacific, LP (10)
Subordinated Units Representing Limited Partner Interests (1) 06/30/2005(2)   J(15)   16,442 (16)     (5)   (6) Common Units Representing Limited Partner Interests 16,442 (17) 1,829,545 (14) (18) I By LB Pacific, LP (10)
Subordinated Units Representing Limited Partner Interests (1) 06/30/2005(2)   J(15)   16,442 (16)     (11)   (6) Common Units Representing Limited Partner Interests 16,442 (17) 1,829,545 (14) (18) I By LB Pacific, LP (10)
Subordinated Units Representing Limited Partner Interests (1) 06/30/2005(2)   J(15)   32,884 (16)     (12)   (6) Common Units Representing Limited Partner Interests 32,884 (17) 3,659,090 (14) (19) I By LB Pacific, LP (10)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
LEHMAN BROTHERS HOLDINGS INC
745 SEVENTH AVENUE
NEW YORK, NY 10019
      See Remark (1)
LEHMAN BROTHERS INC//
745 SEVENTH AVENUE
NEW YORK, NY 10019
      See Remark (1)
LB I GROUP INC
745 SEVENTH AVENUE
NEW YORK, NY 10019
      See Remark (1)
Lehman Brothers Merchant Banking Associates III LP
745 SEVENTH AVENUE
NEW YORK, NY 10019
      See Remark (1).
Lehman Brothers Merchant Banking Associates III LLC
745 SEVENTH AVENUE
NEW YORK, NY 10019
      See Remark (1).

Signatures

 Ashvin Rao, Authorized Signatory of Lehman Brothers Holdings, Inc.   06/06/2006
**Signature of Reporting Person Date

 Ashvin Rao, Authorized Signatory of Lehman Brothers, Inc.   06/06/2006
**Signature of Reporting Person Date

 Ashvin Rao, Authorized Signatory of LB I Group Inc.   06/06/2006
**Signature of Reporting Person Date

 Ashvin Rao, Authorized Signatory of Lehman Brothers Merchant Banking Associates III LLC, general partner of Lehman Brothers Merchant Banking Associates III L.P.   06/06/2006
**Signature of Reporting Person Date

 Ashvin Rao, Authorized Signatory of Lehman Brothers Merchant Banking Associates III LLC   06/06/2006
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) 1-for-1
(2) The transaction date shown is the date on which the allocations to funds managed by the fund manager reporting person as described in footnote 3 were closed. The effect of the allocations is that the investment funds acquired directly beneficial ownership of limited partnership interests in LB Pacific, LP and membership interests in LB Pacific GP, LLC, and indirectly beneficial ownership of the Subordinated Units, on a basis economically equivalent to a purchase on March 3, 2005 at the same price paid by LB I Group Inc. on March 3, 2005 for the interests in LB Pacific, LP and LB Pacific GP, LLC. Accordingly, the purchasing funds separately compensated LB I Group Inc. for the financing costs attributable to the time period between March 3, 2005 and the applicable transaction date.
(3) On May 16, 2005, LB I Group Inc. allocated approximately 8.1% of the ownership interest in each of LB Pacific GP, LLC and LB Pacific LP to funds managed by Lehman Brothers Merchant Banking Associates III L.P. The transaction reported is the indirect disposition by LB I Group Inc. and the indirect acquisition by the funds of the Subordinated Units by virtue of the allocations of equity interests in LB Pacific LP and LB Pacific GP, LLC. The number of Subordinated Units shown as disposed of is based on applying the decrease in proportionate interest of LBI Group Inc. in LB Pacific LP, directly and indirectly through LB Pacific GP, LLC, to the number of Subordinated Units held by LP Pacific LP. The number of Subordinated Units shown as acquired is based on applying the increase in proportionate interest of the funds in LB Pacific LP, directly and indirectly through LB Pacific GP, LLC, to the number of Subordinated Units held by LP Pacific LP.
(4) As a result of the transaction described in footnote 3, Lehman Brothers Merchant Banking Associates III L.P. and Lehman Brothers Merchant Banking Associates III LLC each may be deemed to have acquired, and LB I Group Inc. and Lehman Brothers Inc. each may be deemed to have disposed of, beneficial ownership of 211,004 Subordinated Units that are convertible on or after June 30, 2005, 211,004 Subordinated Units that are convertible on or after June 30, 2006, and 422,007 Subordinated Units that are convertible on or after June 30, 2007.
(5) These Subordinated Units are convertible into Common Units of the Issuer immediately after the distribution of available cash to partners in respect of any quarter ending on or after June 30, 2005, assuming certain financial tests in the Issuer's partnership agreement have been satisfied.
(6) None.
(7) The aggregate purchase price paid by the purchasing investment funds managed by Lehman Brothers Merchant Banking Associates III L.P. for the equity interests in LB Pacific, LP and LB Pacific GP, LLC was approximately $14,416,397 plus financing costs of $67,250, and an allocation of a portion of the aggregate purchase price to the Subordinated Unit based on estimates of the relative fair market values of assets results in a price of $29.64 (or $29.71 including financing costs) per Subordinated Unit that becomes convertible on or after June 30, 2005, a price of $28.12 (or $28.18 including financing costs) per Subordinated Unit that becomes convertible on or after June 30, 2006, and a price of $27.20 (or $27.26 including financing costs) per Subordinated Unit that becomes convertible on or after June 30, 2007.
(8) Each of Lehman Brothers Inc. and LB I Group Inc. may be deemed to beneficially own 516,539 of these Subordinated Units, and Lehman Brothers Merchant Banking Associates III L.P. and Lehman Brothers Merchant Banking Associates III LLC each may each be deemed to beneficially own 1,095,974 of these Subordinated Units, which is based on the indirect proportionate interest of such reporting person, following the reported transactions, in such Subordinated Units by virtue of its direct and indirect equity interest in LB Pacific LP.
(9) Lehman Brothers Holdings Inc. may be deemed to have beneficial ownership of the same securities through its 100% equity interest in Lehman Brothers Inc. In addition, Lehman Brothers Holdings Inc. may be deemed to have a beneficial ownership interest in 217,032 additional Subordinated Units convertible on the same basis attributable to an additional direct and indirect proportionate interest in LB Pacific LP held by investment funds managed by direct and indirect subsidiaries of Lehman Brothers Holdings Inc., as to which it disclaims beneficial ownership except to the extent of its pecuniary interest therein.
(10) These Subordinated Units are held by LB Pacific LP. See Remark (1).
(11) These Subordinated Units are convertible into Common Units of the Issuer immediately after the distribution of available cash to partners in respect of any quarter ending on or after June 30, 2006, assuming certain financial tests in the Issuer's partnership agreement have been satisfied.
(12) These Subordinated Units are convertible into Common Units of the Issuer immediately after the distribution of available cash to partners in respect of any quarter ending on or after June 30, 2007, assuming certain financial tests in the Issuer's partnership agreement have been satisfied.
(13) Each of Lehman Brothers Inc. and LB I Group Inc. may be deemed to beneficially own 1,033,077 of these Subordinated Units, and Lehman Brothers Merchant Banking Associates III L.P. and Lehman Brothers Merchant Banking Associates III LLC each may each be deemed to beneficially own 2,191,949 of these Subordinated Units, which is based on the indirect proportionate interest of such reporting person, following the reported transactions, in such Subordinated Units by virtue of its direct and indirect equity interest in LB Pacific LP.
(14) Lehman Brothers Holdings Inc. may be deemed to have beneficial ownership of the same securities through its 100% equity interest in Lehman Brothers Inc. In addition, Lehman Brothers Holdings Inc. may be deemed to have a beneficial ownership interest in 434,065 additional Subordinated Units convertible on the same basis attributable to an additional direct and indirect proportionate interest in LB Pacific LP held by investment funds managed by direct and indirect subsidiaries of Lehman Brothers Holdings Inc., as to which it disclaims beneficial ownership except to the extent of its pecuniary interest therein.
(15) On June 30, 2005, LB I Group Inc. allocated approximately 0.6% of the ownership interest in each of LB Pacific GP, LLC and LB Pacific LP to funds managed by Lehman Brothers Merchant Banking Associates III L.P. The transaction reported is the indirect disposition by LB I Group Inc. and the indirect acquisition by the funds of the Subordinated Units by virtue of the allocations of equity interests in LB Pacific LP and LB Pacific GP, LLC.
(16) As a result of the transaction described in footnote 15, Lehman Brothers Merchant Banking Associates III L.P. and Lehman Brothers Merchant Banking Associates III LLC each may be deemed to have acquired, and LB I Group Inc. and Lehman Brothers Inc. may each be deemed to have disposed of, beneficial ownership in 16,442 Subordinated Units that are convertible on or after June 30, 2005, 16,442 Subordinated Units that are convertible on or after June 30, 2006, and 32,884 Subordinated Units that are convertible on or after June 30, 2007.
(17) The aggregate purchase price paid by the purchasing investment funds managed by Lehman Brothers Merchant Banking Associates III L.P. for the equity interests in LB Pacific, LP and LB Pacific GP, LLC was approximately $1,123,356 plus financing costs of $10,192, and an allocation of a portion of the aggregate purchase price to the Subordinated Unit based on estimates of the relative fair market values of assets results in a price of $30.79 (or $30.93 including financing costs) per Subordinated Unit that becomes convertible on or after June 30, 2005, a price of $29.20 (or $29.34 including financing costs) per Subordinated Unit that becomes convertible on or after June 30, 2006, and a price of $28.25 (or $28.38 including financing costs) per Subordinated Unit that becomes convertible on or after June 30, 2007.
(18) Each of Lehman Brothers Inc. and LB I Group Inc. may be deemed to beneficially own 500,097 of these Subordinated Units, and Lehman Brothers Merchant Banking Associates III L.P. and Lehman Brothers Merchant Banking Associates III LLC each may each be deemed to beneficially own 1,112,416 of these Subordinated Units, which is based on the indirect proportionate interest of such reporting person, following the reported transactions, in such Subordinated Units by virtue of its direct and indirect equity interest in LB Pacific LP.
(19) Each of Lehman Brothers Inc. and LB I Group Inc. may be deemed to beneficially own 1,000,194 of these Subordinated Units, and Lehman Brothers Merchant Banking Associates III L.P. and Lehman Brothers Merchant Banking Associates III LLC each may each be deemed to beneficially own 2,224,833 of these Subordinated Units, which is based on the indirect proportionate interest of such reporting person, following the reported transactions, in such Subordinated Units by virtue of its direct and indirect equity interest in LB Pacific LP.
 
Remarks:
(1) - This report is filed jointly by Lehman Brothers Holdings Inc., Lehman Brothers Inc., LB I Group Inc., Lehman Brothers Merchant Banking Associates III LP and its general partner, Lehman Brothers Merchant Banking Associates III LLC. The reporting persons may be deemed to be directors of the Issuer by virtue of LB Pacific LP's ownership of 100% of the equity interests in the general partner of the Issuer, but such status is not acknowledged.  After giving effect to the transactions described in this report, Lehman Brothers Holdings Inc. owns: (i) 100% of Lehman Brothers Inc., which owns 100% of LB I Group Inc., which owns, directly or indirectly, approximately 17.9% of each of LB Pacific GP, LLC and LB Pacific, LP. and is the manager of an investment fund that owns approximately 1.2% of each of LB Pacific GP, LLC and LB Pacific, LP; (ii) 100% of Lehman Brothers Merchant Banking Associates III LLC, which owns 100% of Lehman Brothers Merchant Banking Associates III LP, which is the manager of several funds that own collectively approximately 42.5% of each of LB Pacific GP, LLC and LB Pacific, L.P.; and (iii) 100% of Lehman Brothers Private Equity Advisers L.L.C., which is the manager of a fund that owns approximately 8.3% of each of LB Pacific GP, LLC and LB Pacific, L.P.  LB I Group Inc. is reporting on its own behalf and in its capacity as the general partner of the fund. Lehman Brothers Merchant Banking Associates III L.P. is reporting in its capacity as manager of its funds. LB Pacific GP, LLC owns a 0.1% general partner interest in LB Pacific LP. LB Pacific, LP owns indirectly all of the 2% general partner interest in the Issuer and directly all of the subordinated units representing limited partner interests in the Issuer. Each reporting person disclaims beneficial ownership of the Subordinated Units except to the extent of its pecuniary interest therein.

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