<PAGE>

                                                                   EXHIBIT 10.14
                                                              Contract #: 800313

                               SERVICE AGREEMENT
                             FOR RATE SCHEDULE FT-1

      This Service Agreement, made and entered into this 1st day of June, 1993,
by and between TEXAS EASTERN TRANSMISSION CORPORATION, a Delaware Corporation
(herein called "Pipeline") and COLONIAL GAS COMPANY (herein called "Customer",
whether one or more),

                              W I T N E S S E T H:

      WHEREAS, the Federal Energy Regulatory Commission required Pipeline to
restructure Pipeline's services to reflect compliance with Order Nos. 636,
636-A, and 636-B (collectively hereinafter referred to as "Order No. 636"); and

      WHEREAS, by order issued January 13, 1993 (62 FERC P61, 015) and order
issued April 22, 1993 (63 FERC P61, 100), the Federal Energy Regulatory
Commission accepted Pipeline's revised tariff sheets filed in compliance with
Order No. 636 to become effective June 1, 1993, subject to certain conditions
set forth in the April 22, 1993 order; and

      WHEREAS, Algonquin Gas Transmission Company ("Algonquin") made its final
Order No. 636 service elections on May 3, 1993 pursuant to the April 22, 1993
order and Pipeline filed revised tariff sheets to become effective June 1, 1993
in compliance with the April 22, 1993 order; and

      WHEREAS, Customer is also a customer of Algonquin; and

      WHEREAS, Algonquin, in compliance with Order No. 636 and Federal Energy
Regulatory Commission orders issued in Docket No. RS92-28, is assigning its firm
service rights on Pipeline directly to its customers; and

      WHEREAS, Customer's service rights hereunder are part of Algonquin's
service rights being assigned to its customers; and

      WHEREAS, Pipeline and Customer now desire to enter into this Service
Agreement to reflect the assignment of Algonquin's service rights to Customer;

      NOW, THEREFORE, in consideration of the premises and of the mutual
covenants and agreements herein contained, the parties do covenant and agree as
follows:

                                   ARTICLE I

                               SCOPE OF AGREEMENT

      Subject to the terms, conditions and limitations hereof, of Pipeline's
Rate Schedule FT-1, and of the General Terms and Conditions, transportation
service hereunder will be firm. Subject to the terms, conditions and limitations
hereof and of Pipeline's Rate Schedule FT-1, Pipeline agrees to deliver for
<PAGE>

                               SERVICE AGREEMENT
                             FOR RATE SCHEDULE FT-1
                                   (Continued)


Customer's account quantities of natural gas up to the following quantity:

                     Maximum Daily Quantity (MDQ) 7,918 dth

      Pipeline shall receive for Customer's account, at those points on
Pipeline's system as specified in Article IV herein or available to Customer
pursuant to Section 14 of the General Terms and Conditions (hereinafter referred
to as Point(s) of Receipt) for transportation hereunder daily quantities of gas
up to Customer's MDQ, plus Applicable Shrinkage. Pipeline shall transport and
deliver for Customer's account, at those points on Pipeline's system as
specified in Article IV herein or available to Customer pursuant to Section 14
of the General Terms and Conditions (hereinafter referred to as Point(s) of
Delivery), such daily quantities tendered up to such Customer's MDQ.

      Pipeline shall not be obligated to, but may at its discretion, receive at
any Point of Receipt on any day a quantity of gas in excess of the applicable
Maximum Daily Receipt Obligation (MDRO), plus Applicable Shrinkage, but shall
not receive in the aggregate at all Points of Receipt on any day a quantity of
gas in excess of the applicable MDQ, plus Applicable Shrinkage. Pipeline shall
not be obligated to, but may at its discretion, deliver at any Point of Delivery
on any day a quantity of gas in excess of the applicable Maximum Daily Delivery
Obligation (MDDO), but shall not deliver in the aggregate at all Points of
Delivery on any day a quantity of gas in excess of the applicable MDQ.

      In addition to the MDQ and subject to the terms, conditions and
limitations hereof, Rate Schedule FT-1 and the General Terms and Conditions,
Pipeline shall deliver within the Access Area under this and all other service
agreements under Rate Schedules CDS, FT-1, and/or SCT, quantities up to
Customer's Operational Segment Capacity Entitlements, excluding those
Operational Segment Capacity Entitlements scheduled to meet Customer's MDQ, for
Customer's account, as requested on any day.

                                   ARTICLE II

                               TERM OF AGREEMENT

      The term of this Service Agreement shall commence on June 1, 1993 and
shall continue in force and effect until 10/31/2012 and year to year thereafter
unless this Service Agreement is terminated as hereinafter provided. This
Service Agreement may be terminated by either Pipeline or Customer upon years
prior written notice to the other specifying a termination date of any year
occurring on or after the expiration of the primary term. Subject to Section 22
of Pipeline's General Terms and Conditions and without prejudice to such rights,
this Service Agreement may be terminated at any time by Pipeline in the event
Customer fails to pay part or all of the amount of any bill for service


                                       2
<PAGE>

                               SERVICE AGREEMENT
                             FOR RATE SCHEDULE FT-1
                                  (Continued)


hereunder and such failure continues for thirty (30) days after payment is due;
provided, Pipeline gives thirty (30) days prior written notice to Customer of
such termination and provided further such termination shall not be effective
if, prior to the date of termination, Customer either pays such outstanding bill
or furnishes a good and sufficient surety bond guaranteeing payment to Pipeline
of such outstanding bill.

      THE TERMINATION OF THIS SERVICE AGREEMENT WITH A FIXED CONTRACT TERM OR
THE PROVISION OF A TERMINATION NOTICE BY CUSTOMER TRIGGERS PREGRANTED
ABANDONMENT UNDER SECTION 7 OF THE NATURAL GAS ACT AS OF THE EFFECTIVE DATE OF
THE TERMINATION. PROVISION OF A TERMINATION NOTICE BY PIPELINE ALSO TRIGGERS
CUSTOMER'S RIGHT OF FIRST REFUSAL UNDER SECTION 3.13 OF THE GENERAL TERMS AND
CONDITIONS ON THE EFFECTIVE DATE OF THE TERMINATION.

      Any portions of this Service Agreement necessary to correct or cash-out
imbalances under this Service Agreement as required by the General Terms and
Conditions of Pipeline's FERC Gas Tariff, Volume No. 1, shall survive the other
parts of this Service Agreement until such time as such balancing has been
accomplished.

                                  ARTICLE III

                                 RATE SCHEDULE

      This Service Agreement in all respects shall be and remain subject to the
applicable provisions of Rate Schedule FT-1 and of the General Terms and
Conditions of Pipeline's FERC Gas Tariff on file with the Federal Energy
Regulatory Commission, all of which are by this reference made a part hereof.

      Customer shall pay Pipeline, for all services rendered hereunder and for
the availability of such service in the period stated, the applicable prices
established under Pipeline's Rate Schedule FT-1 as filed with the Federal Energy
Regulatory Commission, and as same may hereafter be legally amended or
superseded.

      Customer agrees that Pipeline shall have the unilateral right to file with
the appropriate regulatory authority and make changes effective in (a) the rates
and charges applicable to service pursuant to Pipeline's Rate Schedule FT-1, (b)
Pipeline's Rate Schedule FT-1 pursuant to which service hereunder is rendered or
(c) any provision of the General Terms and Conditions applicable to Rate
Schedule FT-1. Notwithstanding the foregoing, Customer does not agree that
Pipeline shall have the unilateral right without the consent of Customer
subsequent to the execution of this Service Agreement and Pipeline shall not
have the right during the effectiveness of this Service Agreement to make any
filings pursuant to Section 4 of the Natural Gas Act to change the MDQ specified
in Article I, to change the term of the


                                       3
<PAGE>

                               SERVICE AGREEMENT
                             FOR RATE SCHEDULE FT-1
                                  (Continued)

amount of any bill for service hereunder and such failure continues for thirty
(30) days after payment is due; provided, Pipeline gives thirty (30) days prior
written notice to Customer of such termination and provided further such
termination shall not be effective if, prior to the date of termination,
Customer either pays such outstanding bill or furnishes a good and sufficient
surety bond guaranteeing payment to Pipeline of such outstanding bill.

      WEE TERMINATION OF THIS SERVICE AGREEMENT WITH A FIXED CONTRACT TERM OR
THE PROVISION OF A TERMINATION NOTICE BY CUSTOMER TRIGGERS PREGRANTED
ABANDONMENT UNDER SECTION 7 OF THE NATURAL GAS ACT AS OF THE EFFECTIVE DATE OF
THE TERMINATION. PROVISION OF A TERMINATION NOTICE BY PIPELINE ALSO TRIGGERS
CUSTOMER'S RIGHT OF FIRST REFUSAL UNDER SECTION 3.13 OF THE GENERAL TERMS AND
CONDITIONS ON THE EFFECTIVE DATE OF THE TERMINATION.

      Any portions of this Service Agreement necessary to correct or cash-out
imbalances under this Service Agreement as required by the General Terms and
Conditions of Pipeline's FERC Gas Tariff, Volume No. 1, shall survive the other
parts of this Service Agreement until such time as such balancing has been
accomplished.

                                  ARTICLE III

                                 RATE SCHEDULE

      This Service Agreement in all respects shall be and remain subject to the
applicable provisions of Rate Schedule FT-1 and of the General Terms and
Conditions of Pipeline's FERC Gas Tariff on file with the Federal Energy
Regulatory Commission, all of which are by this reference made a part hereof.

      Customer shall pay Pipeline, for all services rendered hereunder and for
the availability of such service in the period stated, the applicable prices
established under Pipeline's Rate Schedule FT-1 as filed with the Federal Energy
Regulatory Commission, and as same may hereafter be legally amended or
superseded.

      Customer agrees that Pipeline shall have the unilateral right to file with
the appropriate regulatory authority and make changes effective in (a) the rates
and charges applicable to service pursuant to Pipeline's Rate Schedule FT-1, (b)
Pipeline's Rate Schedule FT-1 pursuant to which service hereunder is rendered or
(c) any provision of the General Terms and Conditions applicable to Rate
Schedule FT-1. Notwithstanding the foregoing, Customer does not agree that
Pipeline shall have the unilateral right without the consent of Customer
subsequent to the execution of this Service Agreement and Pipeline shall not
have the right during the effectiveness of this Service Agreement to make any
filings pursuant to Section 4 of the Natural Gas Act to change


                                       4
<PAGE>

                               SERVICE AGREEMENT
                             FOR RATE SCHEDULE FT-1
                                  (Continued)

agreement as specified in Article II, to change Point(s) of Receipt specified in
Article IV, to change the Point(s) of Delivery specified in Article IV, or to
change the firm character of the service hereunder. Pipeline agrees that
Customer may protest or contest the aforementioned filings, and Customer does
not waive any rights it may have with respect to such filings.

                                   ARTICLE IV

                  POINT(S) OF RECEIPT AND POINT(S) OF DELIVERY

      The Point(s) of Receipt and Point(s) of Delivery at which Pipeline shall
receive and deliver gas, respectively, shall be specified in Exhibit(s) A and B
of the executed service agreement. Customer's Zone Boundary Entry Quantity and
Zone Boundary Exit Quantity for each of Pipeline's zones shall be specified in
Exhibit C of the executed service agreement.

      Exhibit(s) A, B and C are hereby incorporated as part of this Service
Agreement for all intents and purposes as if fully copied and set forth herein
at length.

                                   ARTICLE V

                                    QUALITY

      All natural gas tendered to Pipeline for Customer's account shall conform
to the quality specifications set forth in Section 5 of Pipeline's General Terms
and Conditions. Customer agrees that in the event Customer tenders for service
hereunder and Pipeline agrees to accept natural gas which does not comply with
Pipeline's quality specifications, as expressly provided for in Section 5 of
Pipeline's General Terms and Conditions, Customer shall pay all costs associated
with processing of such gas as necessary to comply with such quality
specifications. Customer shall execute or cause its supplier to execute, if such
supplier has retained processing rights to the gas delivered to Customer, the
appropriate agreements prior to the commencement of service for the
transportation and processing of any liquefiable hydrocarbons and any PVR
quantities associated with the processing of gas received by Pipeline at the
Point(s) of Receipt under such Customer's service agreement. In addition,
subject to the execution of appropriate agreements, Pipeline is willing to
transport liquids associated with the gas produced and tendered for
transportation hereunder.


                                       5
<PAGE>

                               SERVICE AGREEMENT
                             FOR RATE SCHEDULE FT-1
                                  (Continued)

the MDQ specified in Article I, to change the term of the agreement as specified
in Article II, to change Point(s) of Receipt specified in Article IV, to change
the Point(s) of Delivery specified in Article IV, or to change the firm
character of the service hereunder. Pipeline agrees that Customer may protest or
contest the aforementioned filings, and Customer does not waive any rights it
may have with respect to such filings.

                                   ARTICLE IV

                  POINT(S) OF RECEIPT AND POINT(S) OF DELIVERY

      The Point(s) of Receipt and Point(s) of Delivery at which Pipeline shall
receive and deliver gas, respectively, shall be specified in Exhibit(s) A and B
of the executed service agreement. Customer's Zone Boundary Entry Quantity and
Zone Boundary Exit Quantity for each of Pipeline's zones shall be specified in
Exhibit C of the executed service agreement.

      Exhibit(s) A, B and C are hereby incorporated as part of this Service
Agreement for all intents and purposes as if fully copied and set forth herein
at length.

                                   ARTICLE V

                                    QUALITY

      All natural gas tendered to Pipeline for Customer's account shall conform
to the quality specifications set forth in Section 5 of Pipeline's General Terms
and Conditions. Customer agrees that in the event Customer tenders for service
hereunder and Pipeline agrees to accept natural gas which does not comply with
Pipeline's quality specifications, as expressly provided for in Section 5 of
Pipeline's General Terms and Conditions, Customer shall pay all costs associated
with processing of such gas as necessary to comply with such quality
specifications. Customer shall execute or cause its supplier to execute, if such
supplier has retained processing rights to the gas delivered to Customer, the
appropriate agreements prior to the commencement of service for the
transportation and processing of any liquefiable hydrocarbons and any PVR
quantities associated with the processing of gas received by Pipeline at the
Point(s) of Receipt under such Customer's service agreement. In addition,
subject to the execution of appropriate agreements, Pipeline is willing to
transport liquids associated with the gas produced and tendered for
transportation hereunder.


                                       6
<PAGE>

                               SERVICE AGREEMENT
                             FOR RATE SCHEDULE FT-1
                                  (Continued)

                                   ARTICLE VI

                                   ADDRESSES

      Except as herein otherwise provided or as provided in the General Terms
and Conditions of Pipeline's FERC Gas Tariff, any notice, request, demand,
statement, bill or payment provided for in this Service Agreement, or any notice
which any party may desire to give to the other, shall be in writing and shall
be considered as duly delivered when mailed by registered, certified, or regular
mail to the post office address of the parties hereto, as the case may be, as
follows:

      (a) Pipeline:     TEXAS EASTERN TRANSMISSION CORPORATION
                        5400 Westheimer Court
                        Houston, TX 77056-5310

      (b) Customer:     COLONIAL GAS COMPANY
                        P 0 BOX 3064
                        40 MARKET STREET
                        LOWELL, MA 01853

or such other address as either party shall designate by formal written notice.

                                   ARTICLE VII

                                   ASSIGNMENTS

      Any Company which shall succeed by purchase, merger, or consolidation to
the properties, substantially as an entirety, of Customer, or of Pipeline, as
the case may be, shall be entitled to the rights and shall be subject to the
obligations of its predecessor in title under this Service Agreement; and either
Customer or Pipeline may assign or pledge this Service Agreement under the
provisions of any mortgage, deed of trust, indenture, bank credit agreement,
assignment, receivable sale, or similar instrument which it has executed or may
execute hereafter; otherwise, neither Customer nor Pipeline shall assign this
Service Agreement or any of its rights hereunder unless it first shall have
obtained the consent thereto in writing of the other provided further, however,
that neither Customer nor Pipeline shall be released from its obligations
hereunder without the consent of the other. In addition, Customer may assign its
rights to capacity pursuant to Section 3.14 of the General Terms and Conditions.
To the extent Customer so desires, when it releases capacity pursuant to Section
3.14 of the General Terms and Conditions, Customer may require privity between
Customer and the Replacement Customer, as further provided in the applicable
Capacity Release Umbrella Agreement.


                                       7
<PAGE>

                               SERVICE AGREEMENT
                             FOR RATE SCHEDULE FT-1
                                  (Continued)

                                   ARTICLE VI

                                   ADDRESSES

      Except as herein otherwise provided or as provided in the General Terms
and Conditions of Pipeline's FERC Gas Tariff, any notice, request, demand,
statement, bill or payment provided for in this Service Agreement, or any notice
which any party may desire to give to the other, shall be in writing and shall
be considered as duly delivered when mailed by registered, certified, or regular
mail to the post office address of the parties hereto, as the case may be, as
follows:

      (a) Pipeline:     TEXAS EASTERN TRANSMISSION CORPORATION
                        5400 Westheimer Court
                        Houston, TX 77056-5310

      (b) Customer:     COLONIAL GAS COMPANY
                        P 0 BOX 3064
                        40 MARKET STREET
                        LOWELL, MA 01853

or such other address as either party shall designate by formal written notice.

                                  ARTICLE VII

                                  ASSIGNMENTS

      Any Company which shall succeed by purchase, merger, or consolidation to
the properties, substantially as an entirety, of Customer, or of Pipeline, as
the case may be, shall be entitled to the rights and shall be subject to the
obligations of its predecessor in title under this Service Agreement; and either
Customer or Pipeline may assign or pledge this Service Agreement under the
provisions of any mortgage, deed of trust, indenture, bank credit agreement,
assignment, receivable sale, or similar instrument which it has executed or may
execute hereafter; otherwise, neither Customer nor Pipeline shall assign this
Service Agreement or any of its rights hereunder unless it first shall have
obtained the consent thereto in writing of the other; provided further, however,
that neither Customer nor Pipeline shall be released from its obligations
hereunder without the consent of the other. In addition, Customer may assign its
rights to capacity pursuant to Section 3.14 of the General Terms and Conditions.
To the extent Customer so desires, when it releases capacity pursuant to Section
3.14 of the General Terms and Conditions, Customer may require privity between
Customer and the Replacement Customer, as further provided in the applicable
Capacity Release Umbrella Agreement.


                                       8
<PAGE>

                               SERVICE AGREEMENT
                             FOR RATE SCHEDULE FT-1
                                  (Continued)

                                                                     JAN 19 1994

                                  ARTICLE VIII

                                 INTERPRETATION

      The interpretation and performance of this Service Agreement shall be in
accordance with the laws of the State of Texas without recourse to the law
governing conflict of laws.

      This Service Agreement and the obligations of the parties are subject to
all present and future valid laws with respect to the subject matter, State and
Federal, and to all valid present and future orders, rules, and regulations of
duly constituted authorities having jurisdiction.

                                   ARTICLE IX

                       CANCELLATION OF PRIOR CONTRACT(S)

      This Service Agreement supersedes and cancels, as of the effective date of
this Service Agreement, the contract(s) between the parties hereto as described
below:

                                      NONE


                                       9
<PAGE>

                               SERVICE AGREEMENT
                             FOR RATE SCHEDULE FT-1
                                  (Continued)

                                  ARTICLE VIII

                                 INTERPRETATION

      The interpretation and performance of this Service Agreement shall be in
accordance with the laws of the State of Texas without recourse to the law
governing conflict of laws.

      This Service Agreement and the obligations of the parties are subject to
all present and future valid laws with respect to the subject matter, State and
Federal, and to all valid present and future orders, rules, and regulations of
duly constituted authorities having jurisdiction.

                                   ARTICLE IX

                       CANCELLATION OF PRIOR CONTRACT(S)

      This Service Agreement supersedes and cancels, as of the effective date of
this Service Agreement, the contract(s) between the parties hereto as described
below:

                                      NONE


                                       10
<PAGE>

                               SERVICE AGREEMENT
                             FOR RATE SCHEDULE FT-1
                                  (Continued)

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

                                        TEXAS EASTERN TRANSMISSION CORPORATION


                                        By
                                           -------------------------------------
                                           Vice President

ATTEST:


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

                                        COLONIAL GAS COMPANY


                                        By /s/ John P. Harrington
                                           -------------------------------------
                                           Vice President, Gas Supply

ATTEST:


/s/ Phyllis G. Semenchuk
----------------------------------


                                       11
<PAGE>

                                                              Contract #: 800313

                         EXHIBIT A, TRANSPORTATION PATHS
                    FOR BILLING PURPOSES, DATED June 1, 1993,
                TO THE SERVICE AGREEMENT UNDER RATE SCHEDULE FT-1
           BETWEEN TEXAS EASTERN TRANSMISSION CORPORATION ("Pipeline")
                     AND COLONIAL GAS COMPANY ("Customer"),
                              DATED June 1, 1993:

(1)   Customer's firm Point(s) of Receipt:

<TABLE>
<CAPTION>
                                Maximum Daily
      Point                   Receipt Obligation
      of                        (plus Applicable     Measurement
      Receipt   Description       Shrinkage)       Responsibilities   Owner   Operator
      -------   -----------   ------------------   ----------------   -----   --------
      <S>       <C>           <C>                  <C>                <C>     <C>
      None
</TABLE>

(2)   Customer shall have Pipeline's Master Receipt Point List ("MRPL").
      Customer hereby agrees that Pipeline's MRPL as revised and published by
      Pipeline from time to time is incorporated herein by reference.

Customer hereby agrees to comply with the Receipt Pressure Obligation as set
forth in Section 6 of Pipeline's General Terms and Conditions at such Point(s)
of Receipt.

                                                       Transportation
                Transportation Path                 Path Quantity (Dth/D)
                -------------------                 ---------------------

                M1 to M3                                  7,918

SIGNED FOR IDENTIFICATION


PIPELINE:
          --------------------------


CUSTOMER: /s/ John P. Harrington
          --------------------------

SUPERSEDES EXHIBIT A DATED:
                            --------


                                      A-1
<PAGE>

                                                              Contract #: 800313

              EXHIBIT B, POINT(S) OF DELIVERY, DATED June 1, 1993,
                TO THE SERVICE AGREEMENT UNDER RATE SCHEDULE FT-1
        BETWEEN TEXAS EASTERN TRANSMISSION CORPORATION ("Pipeline"), AND
                      BOSTON COLONIAL COMPANY ("Customer"),
                               DATED June 1, 1993:

<TABLE>
<CAPTION>
                                       Maximum
                                       Daily                            Measurement
Point of                               Delivery     Delivery Pressure   Responsi-
Delivery        Description            Obligation   Obligation          Bilities      Owner     Operator
--------        -----------            ----------   -----------------   -----------   -----     --------
                                          (dth)
<S>        <C>                       <C>            <C>                 <C>           <C>       <C>
1. 70087   ALGONQUIN - LAMBERTVILLE,       7,918    AS REQUESTED BY     TX EAST       TX EAST   ALGONQUIN
           NJ HUNTERDON CO., NJ                     CUSTOMER, NOT TO    TRAN          TRAN
                                                    EXCEED 750 PSIG

2. 71078   ALGONQUIN - HANOVER, NJ         7,918    AS REQUESTED BY     TX EAST       TX EAST   ALGONQUIN
           MORRIS CO., NJ                           CUSTOMER, NOT TO    TRAN          TRAN
                                                    EXCEED 750 PSIG

3. 79513   SS-1 STORAGE POINT              2,372    N/A                 N/A           N/A       N/A
                                     04/01-10/31
                                           2,372
                                     11/01-03/31

4. 79821   AGT - COLONIAL GAS - FOR          0      N/A                 N/A           N/A       N/A
           NOMINATION PURPOSES
</TABLE>

provided, however, that until changed by a subsequent Agreement between Pipeline
and Customer, Pipline's aggregate maximum daily delivery obligations at each of
the Points of Delivery described above, including Pipeline's maximum daily
delivery obligation under this and all other firm Service Agreements existing
between Pipeline and Customer, shall in no event exceed the following:


                                      B-1
<PAGE>

                                                              Contract #: 800313

                   EXHIBIT B, POINT(S) OF DELIVERY (Continued)
                              COLONIAL GAS COMPANY

                                            AGGREGATE MAXIMUM DAILY
                   POINT OF DELIVERY       DELIVERY OBLIGATION (DTH)
                   -----------------       -------------------------

                        No. 1                         21,318

                        No. 2                          9,418

                        No. 3                          2,372

SIGNED FOR IDENTIFICATION


PIPELINE:
          --------------------------


CUSTOMER: /s/ John P. Harrington
          --------------------------

SUPERSEDES EXHIBIT B DATED
                            --------


                                       B-2
<PAGE>

                                                              Contract #: 800313

    EXHIBIT C, ZONE BOUNDARY ENTRY QUANTITY AND ZONE BOUNDARY EXIT QUANTITY,
      DATED June 1, 1993, TO THE SERVICE AGREEMENT UNDER RATE SCHEDULE FT-1
         BETWEEN TEXAS EASTERN TRANSMISSION CORPORATION ("PIPELINE") AND
             COLONIAL GAS COMPANY ("CUSTOMER"), DATED June 1, 1993:

                          ZONE BOUNDARY ENTRY QUANTITY
                                      Dth/D

                                       To

<TABLE>
<CAPTION>
============================================================================================================
FROM     STX   ETX   WLA  ELA   M1-24   M1-30   M1-TXG  M1-TGC   M2-24   M2-30   M2-TXG   M2-TGC   M2     M3
------------------------------------------------------------------------------------------------------------
<S>      <C>   <C>   <C>  <C>   <C>     <C>     <C>     <C>      <C>     <C>     <C>      <C>      <C> <C>
STX                                                        225
------------------------------------------------------------------------------------------------------------
ETX                               954              340
------------------------------------------------------------------------------------------------------------
WLA                                                103     225
------------------------------------------------------------------------------------------------------------
ELA                                      6200
------------------------------------------------------------------------------------------------------------
M1-24                                                             954
------------------------------------------------------------------------------------------------------------
M1-30                                                                     6200
------------------------------------------------------------------------------------------------------------
M1-TXG                                                                            443
------------------------------------------------------------------------------------------------------------
M1-TGC                                                                                       449
------------------------------------------------------------------------------------------------------------
M2-24
------------------------------------------------------------------------------------------------------------
M2-30
------------------------------------------------------------------------------------------------------------
M2-TXG
------------------------------------------------------------------------------------------------------------
M2-TGC
------------------------------------------------------------------------------------------------------------
M2                                                                                                      7918
------------------------------------------------------------------------------------------------------------
M3
============================================================================================================
</TABLE>


                                       C-1
<PAGE>

                                                            Contract #: 800313

                              EXHIBIT C (Continued)
                              COLONIAL GAS COMPANY
                           ZONE BOUNDARY EXIT QUANTITY
                                      Dth/D

                                       To

<TABLE>
<CAPTION>
============================================================================================================
FROM     STX   ETX   WLA  ELA   M1-24   M1-30   M1-TXG  M1-TGC   M2-24   M2-30   M2-TXG   M2-TGC   M2     M3
------------------------------------------------------------------------------------------------------------
<S>      <C>   <C>   <C>  <C>   <C>     <C>     <C>     <C>      <C>     <C>     <C>      <C>      <C> <C>
STX
------------------------------------------------------------------------------------------------------------
ETX
------------------------------------------------------------------------------------------------------------
WLA
------------------------------------------------------------------------------------------------------------
ELA
------------------------------------------------------------------------------------------------------------
M1-24                                                             954
------------------------------------------------------------------------------------------------------------
M1-30                                                                     6200
------------------------------------------------------------------------------------------------------------
M1-TXG                                                                            443
------------------------------------------------------------------------------------------------------------
M1-TGC                                                                                       449
------------------------------------------------------------------------------------------------------------
M2-24
------------------------------------------------------------------------------------------------------------
M2-30
------------------------------------------------------------------------------------------------------------
M2-TXG
------------------------------------------------------------------------------------------------------------
M2-TGC
------------------------------------------------------------------------------------------------------------
M2                                                                                                      7918
------------------------------------------------------------------------------------------------------------
M3
============================================================================================================
</TABLE>

SIGNED FOR IDENTIFICATION


PIPELINE:
          --------------------------


CUSTOMER: /s/ John P. Harrington
          --------------------------

SUPERSEDES EXHIBIT C DATED
                            --------


                                       C-2