Document:

<PAGE>
                                                                   Exhibit 10.46

                                                                Contract # .4188

                                SERVICE AGREEMENT

                                     between

                   TRANSCONTINENTAL GAS PIPE LINE CORPORATION

                                       and

                     NORTH CAROLINA NATURAL GAS CORPORATION

                                      DATED

                                November 1, 1998

<PAGE>

                                SERVICE AGREEMENT

          THIS AGREEMENT entered into this first day of November, 1998, by and
between TRANSCONTINENTAL GAS PIPE LINE CORPORATION, a Delaware corporation,
hereinafter referred to as "Seller," first party, and NORTH CAROLINA NATURAL GAS
CORPORATION, hereinafter referred to as "Buyer," second party,

                                   WITNESSETH

          WHEREAS, pursuant to Order Nos. 636, issued by the Federal Energy
Regulatory Commission (Commission), Buyer has notified Seller of its desire to
convert its firm transportation service under Seller's Rate Schedule X-302 from
Service under Part 157 of the Commission's regulations to service under Part
284(G) of the Commission's regulations; and

          WHEREAS, Buyer has designated that such Part 284(G) service will be
rendered under Seller's Rate Schedule FT; and

          WHEREAS, Seller has prepared this agreement for service for Buyer
under Rate Schedule FT, and this agreement will supersede and terminate the
existing service agreement between Seller and Buyer under Rate Schedule X-302

          NOW, THEREFORE, Seller and Buyer agree as follows:

                                    ARTlCLE I
                           GAS TRANSPORTATION SERVICE

          1. Subject to the terms and provisions of this agreement and of
Seller's Rate Schedule FT, Buyer agrees to deliver or cause to be delivered to
Seller gas for transportation and Seller agrees to receive, transport and
redeliver natural gas to Buyer or for the account of Buyer, on a firm basis, up
to the dekatherm equivalent of a Transportation Contract Quantity ("TCQ") of

                  a. 16,300 Mcf per day for the peak winter months of December,
                     January, and February, and

                  b. 14.670 Mcf per day for the shoulder winter months of
                     November and March

          2. Transportation service rendered hereunder shall not be subject to
curtailment or interruption except as provided in Section 11 of the General
Terms and Conditions of Seller's FERC Gas Tariff.

                                   ARTICLE II
                               POINT(S) OF RECEIPT

Buyer shall deliver or cause to be delivered gas at the point(s) of receipt
hereunder at a pressure sufficient to allow the gas to enter Seller's pipeline
system at the varying pressures that may exist in such system from time to time;
provided, however, that such pressure of the gas delivered or caused to be
delivered by Buyer shall not exceed the maximum operating pressure(s) of
Seller's pipeline system at such point(s) of receipt. In the event the maximum
operating pressure(s) of Seller's pipeline system, at the point(s) of receipt
hereunder, is from time to time increased or decreased, then the maximum
allowable pressure(s) of the gas delivered or caused to be delivered by Buyer to
Seller at the point(s) of receipt shall be correspondingly increased or
decreased upon written notification of Seller to Buyer. The point(s) of receipt
for natural gas received for transportation pursuant to this agreement shall be:

                                       2
<PAGE>

                          SERVICE AGREEMENT (CONTINUED)

See Exhibit A, attached hereto, for points of receipt.

                                   ARTICLE III
                              POINT(S) OF DELIVERY

          Seller shall redeliver to Buyer or for the account of Buyer the gas
transported hereunder at the following point(s) of delivery and at a pressure(s)
of:

See Exhibit B, attached hereto, for points of delivery and pressures.

                                   ARTICLE IV
                                TERM OF AGREEMENT

          This agreement shall be effective as of November 1, 1998 and shall
remain in force and effect until 9:00 a.m. Central Clock Time November 1, 2005
and thereafter until terminated by Seller or Buyer upon at least nine (9) months
prior written notice; provided, however, this agreement shall terminate
immediately and, subject to the receipt of necessary authorizations, if any,
Seller may discontinue service hereunder if (a) Buyer, in Seller's reasonable
judgement fails to demonstrate credit worthiness, and (b) Buyer fails to provide
adequate security in accordance with Section 32 of the General Terms and
Conditions of Seller's Volume No. 1 Tariff. As set forth in Section 8 of Article
II or Seller's August 7, 1989 revised Stipulation and Agreement in Docket Nos.
RP88-68 et al., (a) pregranted abandonment under Section 284.221 (d) of the
Commission's Regulations shall not apply to any long term conversions from firm
sales service to transportation service under Seller's Rate Schedule FT and (b)
Seller shall not exercise its right to terminate this service agreement as it
applies to transportation service resulting from conversions from firm sales
service so long as Buyer is willing to pay rates no less favorable than Seller
is otherwise able to collect from third parties for such service.

                                    ARTICLE V
                             RATE SCHEDULE AND PRICE

          1. Buyer shall pay Seller for natural gas delivered to Buyer hereunder
in accordance with Seller's Rate Schedule FT and the applicable provisions of
the General Terms and Conditions of Seller's FERC Gas Tariff as filed with the
Federal Energy Regulatory Commission, and as the same may be legally amended or
superseded from time to time. Such Rate Schedule and General Terms and
Conditions are by this reference made a part hereof. In the event Buyer and
Seller mutually agree to a negotiated rate and specified term for service
hereunder, provisions governing such negotiated rate (including surcharges) and
term shall be set forth on Exhibit C to the service agreement.

          2. Seller and Buyer agree that the quantity of gas that Buyer delivers
or causes to be delivered to Seller shall include the quantity of gas retained
by Seller for applicable compressor fuel, line loss make-up (and injection fuel
under Seller's Rate Schedule GSS, if applicable) in providing the transportation
service hereunder, which quantity may be changed from time to time and which
will be specified in the currently effective Sheet No. 44 of Volume No. 1 of
this Tariff which relates to service under this agreement and which is
incorporated herein.

          3. In addition to the applicable charges for firm transportation
service pursuant to Section 3 of Seller's Rate Schedule FT, Buyer shall
reimburse Seller for any and all filing fees incurred as a result of Buyer's
request for service under Seller's Rate Schedule FT, to the extent such fees are
imposed upon Seller by the Federal Energy Regulatory Commission or any successor
governmental authority having jurisdiction.

                                       3
<PAGE>

                          SERVICE AGREEMENT (CONTINUED)

                                   ARTICLE VI
                                  MISCELLANEOUS

          1. This Agreement supersedes and cancels as of the effective date
hereof the following contract(s) between the parties hereto:

                  Rate Schedule X-302 Service Agreement between Seller and
                  buyer, dated July 2, 1990, as amended on February 1, 1992 and
                  as amended on February 1, 1993.

          2. No waiver by either party of any one or more defaults by the other
in the performance of any provisions of this agreement shall operate or be
construed as a waiver of any future default or defaults, whether of a like or
different character.

          3. The interpretation and performance of this agreement shall be in
accordance with the laws of the State of Texas, without recourse to the law
governing conflict of laws, and to all present and future valid laws with
respect to the subject matter, including present and future orders, rules and
regulations of duly constituted authorities.

          4. This agreement shall be binding upon, and inure to the benefit of
the parties hereto and their respective successors and assigns.

          5. Notices to either party shall be in writing and shall be considered
as duly delivered when mailed to the other party at the following address:

                  (a)       If to Seller:

                            Transcontinental Gas Pipe Line Corporation
                            P.O. Box 1396
                            Houston, Texas, 77251
                            Attention: Customer Services

                  (b)       If to Buyer:

                            North Carolina Natural Gas Corporation
                            P. O. Box 909
                            (150 Rowan)
                            Fayetteville, North Carolina 28302-0-0-0
                            Attn: Vice President, Gas Supply & Transportation

                                       4
<PAGE>

                          SERVICE AGREEMENT (CONTINUED)

          IN WITNESS WHEREOF, the parties hereto have caused this agreement to
be signed by their respective officers or representatives thereunto duly
authorized.

                                      TRANSCONTINENTAL GAS PIPE LINE CORPORATION
                                                                        (Seller)

                                               By /s/ Frank J. Ferazzi
                                                  --------------------
                                               Frank J. Ferazzi
                                               Vice President - Customer Service
                                               Rates

                                          NORTH CAROLINA NATURAL GAS CORPORATION
                                                                       (Buyer)

                                               By /s/ Gerald A. Teale
                                                  -------------------

                                       5
<PAGE>

                                    EXHIBIT A

<TABLE>
<CAPTION>
                                                             Buyer's                         Buyer's
                                                        Mainline Capacity               Mainline Capacity
                                                            Entitlement                   Entitlement
                              Receipt                       Peak Months                  Shoulder Months
                              Month (2/)                (Mcf per day) (3/)             (Mcf per day) (3/)
                              ---------                 ------------------             -------------------
<S>                <C>                                  <C>                            <C>
TIER 1 (1/)        Holmesville                                14,162                         12,746

TIER 11 (1/)       Jefferson Davis County-                    14,162                         12,746
                   Miss Fuels
                   Bass Exchange-FGT
                   Bassfield-ANR
                   Holiday Creek
                   Barnes-Newsom
                   West Oakvale
                   Oakvale-Amoco
                   Oakvale-Amoco Sabine
                   Hattisburg-First Reserve
                   Walthall-United
                   Greens Creek
                   Jones County-Gitano
                   Koch Reedy Creek
                   Holiday Creek-ANR

TIER 111 (1/)      Clark County-Miss Fuels                    16,300                         14,670
                   Magnolia Pipeline Interconnect
                   Jonesboro-SNG
                   Heidelberg
                   Station 85 Main Line Pool
</TABLE>

---------------------

(1/)     TIER 1  - Transco's mainline between Holmesville and Station 70

         TIER 11 - Transco's mainline between Station 70 and Station 80

         TIER 111 -Transco's mainline downstream of Station 80

(2/)     Transco's ability to receive gas under this Rate Schedule at specific
         point(s) of receipt is subject to the operating limitations of Transco
         and the upstream party at such point(s) and the availability of
         capacity at such point(s) of receipt.

(3/)     These quantities do not include the additional quantities of gas
         retained by Seller for applicable compressor fuel and line loss make-up
         provided for in Article V, 2 of this Service Agreement, which are
         subject to change as provided for in Article V, 2 hereof. The volume
         provided for each tier represents the maximum allowable firm capacity
         entitlement to be transported through the associated tier from all
         receipt points within that tier. However, the total cumulative capacity
         entitlement for all receipt points provided herein shall not exceed the
         specified capacity entitlement provided for Tier 111, which amount
         shall equal Shipper's transportation contract demand quantity. To the
         extent that on any day other participants in Transco's Southern
         Expansion Project are not utilizing their total daily TCDQ within a
         Tier, Transco is willing to receive additional quantities of gas from
         Shipper at such points within such Tier, on an interruptible basis, not
         to exceed Shipper's total daily TCDQ.

<PAGE>

                                    EXHIBIT B

<TABLE>
<CAPTION>
                                                 Transportation                      Transportation
                                               Contract Quantity                   Contract Quantity
Delivery                                          Peak Months                        Shoulder Months
Point(s) of Delivery and Pressure*               (Mcf per Day)                       (Mcf per Day)
----------------------------------             -----------------                   -----------------
<S>                                            <C>                                 <C>
N. C. Natural Tidewater                              10,000                               9,000

Pleasant Hill                                         6,300                               5,670

Total Transportation
Contract Demand Quantity:                            16,300                              14,670
                                                     ------                              ------
</TABLE>

*        Subject to the conditions contained in this Agreement, Seller shall
         make deliveries of gas for the account of Buyer at the Point(s) of
         Delivery specified above at such pressures as may be available from
         time to time in Seller's line serving such Point(s) of Delivery not to
         exceed maximum allowable operating pressure, but not less than fifty
         (50) psig or at such other pressures as may be agreed upon in the
         day-to-day operations of Buyer and Seller.

         Deliveries of gas to the Point(s) of Delivery shall be subject to the
         limitations of Shipper's Delivery Point Entitlements (DPE) at such
         points as set forth in Transco's FERC Gas Tariff.<PAGE>

                                                                   Exhibit 10.47

                                                                Contract #0.0725

                           WASHINGTON STORAGE SERVICE

                                SERVICE AGREEMENT

                                     between

                   TRANSCONTINENTAL GAS PIPE LINE CORPORATION

                                       and

                     NORTH CAROLINA NATURAL GAS CORPORATION

                                      DATED

                                 August 1, 1991

<PAGE>

                    SERVICE AGREEMENT UNDER RATE SCHEDULE WSS

         THIS AGREEMENT entered into this first day of August, 1991 by and
between TRANSCONTINENTAL GAS PIPE LINE CORPORATION, a Delaware corporation,
hereinafter referred to as "Seller," first party, and, NORTH CAROLINA NATURAL
GAS CORPORATION, a Delaware corporation, hereinafter referred to as "Buyer",
second party,

                                   WITNESSETH:

         WHEREAS, Buyer is purchasing natural gas storage service under Seller's
Rate Schedule WSS as set forth herein:

         NOW, THEREFORE, Seller and Buyer agree as follows:

                                    ARTICLE I
                             SERVICE TO BE RENDERED

         Subject to the terms and provisions of this agreement and of Seller's
Rate Schedule WSS, Seller agrees to receive from Buyer, quantities of natural
gas for the Base Gas and for storage, inject into storage for Buyer's account,
store, withdraw from storage (or cause to be injected into storage for Buyer's
account, stored, and withdrawn from storage) and deliver to Buyer, quantities of
natural gas as follows:

         To withdraw from storage or cause to be withdrawn from storage, the gas
         stored for Buyer's account up to a maximum quantity in any day of
         31,079 Mcf, which quantity shall be Buyer's Storage Demand Quantity, or
         such greater or lesser daily quantity, as applicable from time to time,
         pursuant to the terms and conditions of Seller's Rate Schedule WSS.

         To receive and store or cause to be stored up to a total quantity at
         any one time of 2,641,720 Mcf, which quantity shall be Buyer's Storage
         Capacity Quantity.

                                   ARTICLE II
                                POINT OF DELIVERY

         The Point or Points of Delivery for all natural gas delivered by Seller
to Buyer under this agreement shall be at or near:

         Station 54

                                   ARTICLE III
                                DELIVERY PRESSURE

         Seller shall deliver natural gas to Buyer at the Point(s) of Delivery
at a pressure(s) of:

         Not applicable.

                                   ARTICLE IV
                                TERM OF AGREEMENT

         This agreement shall be effective August 1, 1991 and shall remain in
force and effect for a period ending March 31, 1998.

<PAGE>

                    SERVICE AGREEMENT UNDER RATE SCHEDULE WSS
                                   (Continued)

                                    ARTICLE V
                             RATE SCHEDULE AND PRICE

         Buyer shall pay Seller for natural gas service rendered hereunder in
accordance with Seller's Rate Schedule WSS and the applicable provisions of the
General Terms and Conditions of Seller's FERC Gas Tariff as filed with the
Federal Energy Regulatory Commission, and as the same may be amended or
superseded from time to time at the initiative of either party. Such rate
schedule and General Terms and Conditions are by this reference made a part
hereof.

                                   ARTICLE VI
                                  MISCELLANEOUS

         1. The subject heading of the Articles of this agreement are inserted
for the purpose of convenient reference and are not intended to be a part of
this agreement or to be considered in any interpretation of the same.

         2. This agreement supersedes and cancels as of the effective date
hereof the following contracts between the parties hereto: WSS Service Agreement
dated August 6, 1981.

         3. No waiver by either party of any one or more defaults by the other
in the performance of any provisions of this agreement shall operate or be
construed as a waiver of any future default or defaults, whether of a like or
different character.

         4. This agreement shall be interpreted, performed and enforced in
accordance with the laws of the State of Texas.

         5. This agreement shall be binding upon, and inure to the benefit of
the parties hereto and their respective successors and assigns.

         IN WITNESS WHEREOF, the parties hereto have caused this agreement to be
signed by their respective Presidents or Vice Presidents thereunto duly
authorized and have caused their respective corporate seals to be hereunto
affixed and attested by their respective Secretaries and Assistant Secretaries
the day and year above written.

ATTEST:                                     TRANSCONTINENTAL GAS PIPE LINE
                                            CORPORATION
                                            (Seller)

/s/ Grace L. Ballinger                      By /s/ Thomas E. Skains
----------------------                         --------------------
Asst. Secretary                                President and Chief
                                               Executive Officer

                                            NORTH CAROLINA NATURAL GAS
                                            CORPORATION
                                           (Buyer)

ATTEST:

/s/ Sally T. Sowers                         By: /s/ Cal B. Wells
-------------------                             ----------------
Asst. Secretary                             Title: President

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