(As filed with the Securities and Exchange Commission August 19, 2004)

                                                              File No. 70-10169

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                     POS-AMC
                                       on
                                    FORM U-1
                         POST-EFFECTIVE AMENDMENT NO. 2
                                (Amendment No. 4)
                                       TO
                           APPLICATION OR DECLARATION
                                    UNDER THE
                   PUBLIC UTILITY HOLDING COMPANY ACT OF 1935

                                  NiSource Inc.
           Northern Indiana Public Service Company and its subsidiary
                           Kokomo Gas and Fuel Company
                               KGF Trading Company
                  Northern Indiana Fuel and Light Company, Inc.
                     Northern Indiana Trading Company, Inc.
                      EnergyUSA, Inc. and its subsidiaries
                               PEI Holdings, Inc.
                         NiSource Capital Markets, Inc.
                             NiSource Finance Corp.
                        Granite State Transmission, Inc.
                           Crossroads Pipeline Company
             NiSource Development Company, Inc. and its subsidiaries
                  NI Energy Services, Inc. and its subsidiaries
                       NiSource Corporate Services Company
                       NiSource Energy Technologies, Inc.
                         NiSource Retail Services, Inc.
                 IWC Resources Corporation and its subsidiaries
                              Columbia Energy Group
                      Columbia Atlantic Trading Corporation
                      Columbia Deep Water Services Company
                      Columbia Energy Services Corporation
                Columbia Remainder Corporation and its subsidiary
                         Columbia Assurance Agency, Inc.
                              801 East 86th Avenue
                        Merrillville, Indiana 46410-6272





                              Bay State Gas Company
                            Northern Utilities, Inc.
                               300 Friberg Parkway
                      Westborough, Massachusetts 01581-5039

                         Columbia Gas of Kentucky, Inc.
                           Columbia Gas of Ohio, Inc.
                         Columbia Gas of Maryland, Inc.
                       Columbia Gas of Pennsylvania, Inc.
                         Columbia Gas of Virginia, Inc.
                    Columbia of Ohio Receivables Corporation
                             200 Civic Center Drive
                              Columbus, Ohio 43215

                      Columbia Gas Transmission Corporation
                            1700 MacCorkle Avenue, SE
                         Charleston, West Virginia 25314

                       Columbia Gulf Transmission Company
                             2603 Augusta, Suite 125
                              Houston, Texas 77057

            Columbia Network Services Corporation and its subsidiary
                                1600 Dublin Road
                            Columbus, Ohio 43215-1082

                     NiSource Insurance Corporation Limited
                              20 Parliament Street
                                 P.O. Box HM 649
                             Hamilton HM CX, Bermuda

      (Names of companies filing this statement and addresses of principal
                               executive offices)
              -----------------------------------------------------

                                  NISOURCE INC.

 (Name of top registered holding company parent of each applicant or declarant)
             -------------------------------------------------------


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               Jeffrey W. Grossman, Vice President and Controller
                                  NiSource Inc.
                              801 East 86th Avenue
                        Merrillville, Indiana 46410-6272

                     (Name and address of agent for service)
                ------------------------------------------------

     The Commission is requested to mail copies of all orders, notices and other
communications to:

        Peter V. Fazio, Jr., Esq.               William T. Baker, Jr., Esq.
        Schiff Hardin & Waite                   Thelen Reid & Priest LLP
        6600 Sears Tower                        875 Third Avenue
        Chicago, Illinois  60606-6473           New York, New York  10022


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     Post-Effective Amendment No. 1, filed in this proceeding on March 17, 2004,
is hereby amended and restated in its entirety to read as follows:

ITEM 1.  DESCRIPTION OF PROPOSED TRANSACTION.
         -----------------------------------

         1.1 INTRODUCTION. NiSource Inc. ("NiSource"), a registered holding
company,/1/ directly and indirectly owns all of the issued and outstanding
common stock of ten public utility subsidiary companies: Northern Indiana Public
Service Company ("Northern Indiana"), Kokomo Gas and Fuel Company and Northern
Indiana Fuel and Light Company, Inc., Bay State Gas Company, Northern Utilities,
Inc., Columbia Gas of Kentucky, Inc., Columbia Gas of Maryland, Inc., Columbia
Gas of Ohio, Inc., Columbia Gas of Pennsylvania, Inc. and Columbia Gas of
Virginia, Inc. (collectively, the "Utility Subsidiaries"). Together, the Utility
Subsidiaries distribute gas at retail to approximately 3.3 million customers in
portions of Indiana, Ohio, Virginia, Maryland, Kentucky, Pennsylvania,
Massachusetts, New Hampshire and Maine. In addition, Northern Indiana generates,
transmits and sells electricity to approximately 441,000 customers in 21
counties in northern Indiana.

          By order dated December 30, 2003 in this proceeding (the "Prior
Order"), the Commission authorized NiSource, the Utility Subsidiaries and
certain of NiSource's direct and indirect non-utility subsidiary companies to
engage in a program of external and intrasystem financing, to organize and
acquire the securities of certain specified types of new subsidiaries, to engage
in certain non-exempt non-utility businesses, and to engage in other related
transactions in the ordinary course of business. In particular, as it relates to
this Post-Effective Amendment, NiSource, the Utility Subsidiaries, and certain
of NiSource's non-utility subsidiaries were authorized to continue as parties to
the NiSource System Money Pool Agreement ("Money Pool"), subject to terms and
conditions previously approved by the Commission in File No. 70-9945,/2/ and, to
the extent not exempt under Rule 52, the participating subsidiaries of NiSource
were authorized to make borrowings from each other and from NiSource Finance
Corp., a financing subsidiary of NiSource, pursuant to the Money Pool, and, in
connection therewith to execute and deliver their promissory notes evidencing
such Money Pool borrowings.

          1.2 FURTHER RELIEF REQUESTED. It is now requested that the Commission
issue a supplemental order in this proceeding authorizing NiSource Retail
Services, Inc. ("Retail Services"), an existing non-utility subsidiary of
NiSource, and Central Kentucky Transmission Company ("Central Kentucky"), which
will become a non-utility subsidiary of Columbia Gas of Kentucky, Inc.
("Columbia Kentucky"), to become parties to and participate in the Money Pool as
borrowers,/3/ subject to the same terms and conditions previously authorized by
the Commission. It is further requested that the Commission reserve jurisdiction
over the


----------
1  See NiSource Inc., et al., Holding Co. Act Release No. 27263 (Oct. 30, 2000).

2  See NiSource Inc., et al., Holding Co. Act Release Nos. 27479 (Dec. 19,
2001), 27535 (June 3, 2002), and 27559 (Aug. 8, 2002).

3  Under the terms of the Prior Order, no further Commission authorization is
required for any new non-exempt subsidiary of NiSource to participate in the
Money Pool as a lender only.


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participation of any other current or future direct or indirect non-utility
subsidiary of NiSource as a borrower under the Money Pool.

         Retail Services, which was incorporated in November 2003, is an
"energy-related company" under Rule 58 that was organized to render
energy-management services, to sell, install, and/or service standard gas and
electric appliances, and to provide other technical services developed in the
course of utility operations, including, without limitation, in-house gas line
maintenance and repair services. Central Kentucky, which will be a "gas-related
company" under the Rule 58, is being organized by Columbia Kentucky in order to
acquire and hold a 25% undivided interest in a segment of Columbia Gas
Transmission Corporation's interstate pipeline and appurtenant facilities
located in Kentucky (referred to as Line KA-1)./4/ Central Kentucky will utilize
the pipeline to provide gas transportation service to Columbia Kentucky and to
unaffiliated third parties pursuant to a gas transportation tariff approved by
the Federal Energy Regulatory Commission.

ITEM 2.  FEES, COMMISSIONS AND EXPENSES.
         ------------------------------

         The additional fees, commissions and expenses incurred or to be
incurred in connection with the preparation and filing of this Post-Effective
Amendment are estimated not to exceed $4,000.

ITEM 3.  APPLICABLE STATUTORY PROVISIONS.
         -------------------------------

         3.1 GENERAL. Sections 6(a), 7, 9(a), 10, 12(b) and 12(f) of the Act are
applicable to Money Pool transactions (to the extent not exempt under Rule 52).

         3.2 COMPLIANCE WITH RULES 53 AND 54. The transactions proposed herein
are also subject to Rules 53 and 54. Under Rule 53(a), the Commission shall not
make certain specified findings under Sections 7 and 12 in connection with a
proposal by a holding company to issue securities for the purpose of acquiring
the securities of or other interest in an EWG, or to guarantee the securities of
an EWG, if each of the conditions in paragraphs (a)(1) through (a)(4) thereof
are met, provided that none of the conditions specified in paragraphs (b)(1)
through (b)(3) of Rule 53 exists. Rule 54 provides that the Commission shall not
consider the effect of the capitalization or earnings of subsidiaries of a
registered holding company that are EWGs or FUCOs in determining whether to
approve other transactions if Rule 53(a), (b) and (c) are satisfied. These
standards are met.

         Rule 53(a)(1): NiSource's "aggregate investment" (as defined in Rule
53) in EWGs is currently $304.1 million, or approximately 43.7% of NiSource's
"consolidated retained earnings" (also as defined in Rule 53) at March 31, 2004


----------
4  The purchase price for the 25% undivided interest in Line KA-1is
approximately $275,000. The intercompany sale of the pipeline segment is exempt
under Rule 43. This transaction is expected to benefit retail gas customers in
Kentucky by lowering Columbia Kentucky's gas transportation costs.


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($695.7 million). NiSource does not hold an interest in any FUCO.

         Rule 53(a)(2): NiSource will maintain books and records enabling it to
identify investments in and earnings from each EWG and FUCO in which it directly
or indirectly acquires and holds an interest. NiSource will cause each domestic
EWG in which it acquires and holds an interest, and each foreign EWG and FUCO
that is a majority-owned subsidiary, to maintain its books and records and
prepare its financial statements in conformity with U.S. generally accepted
accounting principles ("GAAP"). All of such books and records and financial
statements will be made available to the Commission, in English, upon request.

         Rule 53(a)(3): No more than 2% of the employees of the Utility
Subsidiaries will, at any one time, directly or indirectly, render services to
EWGs and FUCOs.

         Rule 53(a)(4): NiSource will submit a copy of the
Application/Declaration in this proceeding and each amendment thereto, and will
submit copies of any Rule 24 certificates required hereunder, as well as a copy
of NiSource's Form U5S, to each of the public service commissions having
jurisdiction over the retail rates of the Utility Subsidiaries.

         In addition, NiSource states that the provisions of Rule 53(a) are not
made inapplicable to the authorization herein requested by reason of the
occurrence or continuance of any of the circumstances specified in Rule 53(b).
Rule 53(c) is inapplicable by its terms.

ITEM 4.  REGULATORY APPROVALS.
         --------------------

         No state commission, and no federal commission, other than the
Commission, has jurisdiction over the proposed transaction.

ITEM 5.  PROCEDURE.
         ---------

         The applicants request the Commission issue a notice of the proposed
transaction as soon as practicable and issue a supplemental order approving the
proposed transaction as soon as practicable after the end of the notice period.
The applicants further request that there should not be a 30-day waiting period
between issuance of the Commission's order and the date on which the order is to
become effective, waive a recommended decision by a hearing officer or any other
responsible officer of the Commission, and consent to the participation by the
Division of Investment Management in the preparation of the Commission's
decision and/or order, unless the Division of Investment Management opposes the
matters proposed herein.


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ITEM 6.  EXHIBITS AND FINANCIAL STATEMENTS.
         ---------------------------------

         A.  EXHIBITS.
             --------

             (no additional exhibits are being filed with this Post-Effective
              Amendment)

         B.  FINANCIAL STATEMENTS.

             FS-1   NiSource Inc. Consolidated Balance Sheet as of December 31,
                    2003 and Consolidated Statement of Income for the year ended
                    December 31, 2003 (incorporated by reference to NiSource
                    Inc.'s Annual Report on Form 10-K for the year ended
                    December 31, 2003) (File No. 1-16189).

             FS-2   NiSource Inc. Consolidated Balance Sheet as of March 31,
                    2004 and Consolidated Statement of Income for the three
                    months ended March 31, 2004 (incorporated by reference to
                    NiSource Inc.'s Quarterly Report on Form 10-Q for the period
                    ended March 31, 2004) (File No. 1-16189).

ITEM 7.  INFORMATION AS TO ENVIRONMENTAL EFFECTS.
         ---------------------------------------

         The proposed transaction does not involve a "major federal action" nor
does it "significantly affect the quality of the human environment," as those
terms are used in section 102(2)(C) of the National Environmental Policy Act.
The proposed transaction that are the subject of this Post-Effective Amendment
will not result in changes in the operation of the applicants that will have an
impact on the environment. The applicants are not aware of any federal agency
that has prepared or is preparing an environmental impact statement with respect
to the proposed transaction.


                                       4



                                   SIGNATURES

         Pursuant to the requirements of the Public Utility Holding Company Act
of 1935, the undersigned companies has duly caused this Post-Effective Amendment
to be signed their behalves by the undersigned thereunto duly authorized.

                                  NiSource Inc.
                                  Northern Indiana Public Service Company
                                  EnergyUSA, Inc.
                                  NiSource Capital Markets, Inc.
                                  NiSource Finance Corp.
                                  NiSource Development Company, Inc.
                                  NI Energy Services, Inc.
                                  NiSource Corporate Services Company
                                  NiSource Energy Technologies, Inc.
                                  NiSource Retail Services, Inc.
                                  Kokomo Gas and Fuel Company
                                  KGF Trading Company
                                  Northern Indiana Fuel and Light Company, Inc.
                                  Northern Indiana Trading Company, Inc.
                                  Bay State Gas Company
                                  Northern Utilities, Inc.
                                  PEI Holdings, Inc.
                                  Granite State Transmission, Inc.
                                  Crossroads Pipeline Company
                                  IWC Resources Corporation
                                  Columbia Energy Group
                                  Columbia Gas of Kentucky, Inc.
                                  Columbia Gas of Ohio, Inc.
                                  Columbia Gas of Maryland, Inc.
                                  Columbia Gas of Pennsylvania, Inc.
                                  Columbia Gas of Virginia, Inc.
                                  Columbia Network Services Corporation
                                  Columbia Atlantic Trading Corporation
                                  Columbia Deep Water Services Company
                                  Columbia of Ohio Receivables Corporation
                                  NiSource Insurance Corporation Limited
                                  Columbia Gulf Transmission Company
                                  Columbia Gas Transmission Corporation


                       (signatures continued on next page)


                                       5



                                  Columbia Network Services Corporation
                                  CNS Microwave, Inc.
                                  Columbia Energy Services Corporation
                                  Columbia Remainder Corporation
                                  Columbia Assurance Agency, Inc.


                                  By: /s/  Jeffrey W. Grossman
                                  Name:    Jeffrey W. Grossman
                                  Title:   Vice President


Date:  August 19, 2004



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