[EXHIBIT 10tt TO COLONIAL GAS COMPANY
              10-K FOR YEAR ENDED DECEMBER 31, 1996]

 
                   SERVICE AGREEMENT #001734
                        (FSS Service)
                              
     AGREEMENT made this 12th day of April, 1996, by and
between NATIONAL FUEL GAS SUPPLY CORPORATION, hereinafter
called "Transporter" and COLONIAL GAS COMPANY, hereinafter
called "Shipper."

     WITNESSETH:  That in consideration of the mutual
covenants herein contained, the parties hereto agree that
Transporter will store natural gas for Shipper during the
term, at the rates and on the terms and conditions
hereinafter provided.

                          ARTICLE I

                         Quantities
                              
     Beginning on the date on which storage service is
commenced hereunder and thereafter for the remaining term of
this Agreement, and subject to the provisions of
Transporter's FSS Rate Schedule, Transporter agrees to
receive, cause to be injected into storage for Shipper's
account, store, withdraw from storage, and deliver to
Shipper quantities of natural gas as follows:

Maximum Storage Quantity (MSQ) of 930,450 Dekatherms (Dth)
Maximum Daily Injection Quantity (MDIQ) of 4,652 Dth
Maximum Daily Withdrawal Quantity (MDWQ) of 6,203 Dth

                         ARTICLE II

                           Rates
                              
     Unless otherwise mutually agreed in a written amendment
to this Agreement, for the service provided by Transporter
hereunder, Shipper shall pay Transporter the maximum rate
provided under Rate Schedule FSS set forth in Transporter's
effective FERC Gas Tariff.  In the event that the
Transporter places on file with the Federal Energy
Regulatory Commission ("Commission")  another rate schedule
which may be applicable to transportation service rendered
hereunder, then Transporter, at its option, may from and
after the effective date of such rate schedule, utilize such
rate schedule in performance of this Agreement.  Such a rate
schedule(s) or superseding rate schedule(s) and any
revisions thereof which shall be filed and become effective
shall apply to and be part of this Agreement.

     Transporter shall have the right to propose, file and
make effective with the Commission, or other body having
jurisdiction, changes and revisions of any effective rate
schedule(s), or to propose, file, and make effective
superseding rate schedules, for the purpose of changing the
rate, charges, and other provisions thereof effective as to
Shipper.

     Shipper does not hereby waive its right to protest or
contest the aforementioned filings.

                         ARTICLE III

                     Term of Agreement
                              
     This Agreement shall be effective as of the effective
date of an amendment to the Underground Storage Service
Agreement between Transporter and Shipper, pursuant to
Transporter's Rate Schedule SS-1, that reduces the Annual
Storage Volume thereunder from 2,000,000 Mcf to 1,098,350
Mcf.  This Agreement shall continue in effect until March
31, 2000 [BY 12/1/96 AMENDMENT; PREVIOUSLY MARCH 31,1998], 
and shall continue in effect from year to year
thereafter until terminated by either Transporter or Shipper
upon not less than 12 months' prior written notice to the
other specifying as a termination date the end of such
period or any subsequent anniversary thereof.

     The Injection Period shall commence April 1st of
each year and end the following October 31st.  The
Withdrawal Period shall commence November 1st of each year
and end the following March 31st.

                         ARTICLE IV

                Receipt and Delivery Points
                              
     The Point of  Receipt for all gas that may be received
for Shipper's account for storage by Transporter shall be
Transporter's System Storage.

     The Point of Delivery for all gas to be delivered by
Transporter for Shipper's account shall be Transporter's
System Storage.

                          ARTICLE V

         Incorporation by Reference of Tariff Provisions
                              
     To the extent not inconsistent with the terms and
conditions of this agreement, the provisions of Rate
Schedule FSS, or any effective superseding rate schedule or
otherwise applicable rate schedule, including any provisions
of the General Terms and Conditions incorporated therein,
and any revisions thereof that may be made applicable to and
part hereof by reference.

                         ARTICLE VI

                        Miscellaneous
                              
     1.   No change, modification or alteration of this
Agreement shall be or become effective until executed in
writing by the parties hereto, and no course of dealing
between the parties shall be construed to alter the terms
hereof, except as expressly stated herein.

     2.   No waiver by any 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
other default or defaults, whether of a like or of a
different character.

     3.   Any company which shall succeed by purchase,
merger or consolidation of the gas related properties,
substantially as an entirety, of Transporter or of Shipper,
as the case may be entitled to the rights and shall be
subject to the obligations of its predecessor in title under
this Agreement.  Transporter may, without relieving itself
of its obligations under this Agreement, assign any of its
rights hereunder to a company with which it is affiliated,
but otherwise, no assignment of this Agreement or of any of
the rights or obligations hereunder shall be made unless
there first shall have been obtained the consent thereto in
writing of the other party.  Consent shall not be
unreasonably withheld.

     4.   Except as herein otherwise provided, any notice,
request, demand, statement or bill provided for in this
Agreement, or any notice which either party may desire to
give the other, shall be in writing and shall be considered
as duly delivered when mailed by registered or certified
mail to the Post Office address of the parties hereto, as
the case may be, as follows:

      	Transporter:	National Fuel Gas Supply Corporation
                        Gas Supply - Transportation
                        Room 1200
                        10 Lafayette Square
                        Buffalo, New York 14203

     	Shipper:  	Colonial Gas Company
                        40 Market Street
                        Lowell, Massachusetts 01853
                        Attn.:    John P. Harrington
                        Senior Vice President, Gas Supply

or at such other address as either party shall designate by
formal written notice.  Routine communications, including
monthly statements, shall be considered as duly delivered
when mailed by either registered, certified, or ordinary
mail, electronic communication, or telecommunication.

     5.   This Agreement and the respective obligations of
the parties   hereunder are subject to all present and
future valid laws, orders, rules and regulations of
constituted authorities having jurisdiction over the
parties, their functions or gas supply, this Agreement or
any provision hereof.  Neither party shall be held in
default for failure to perform hereunder if such failure is
due to compliance with laws, orders, rules or regulations of
any such duly constituted authorities.

     6.   The  subject headings of the articles of this
Agreement are inserted for the purpose of convenient
reference and are not intended to be part of the Agreement
nor considered in any interpretation of the same.

     7.   No presumption shall operate in favor of or
against either party hereto as a result of any
responsibility either party may have had for drafting this
Agreement.

     8.   The interpretation and performance of this
Agreement shall be in accordance with the laws of the State
of Pennsylvania, without recourse to the law regarding the
conflict of laws.

     The parties hereto have caused this Agreement to be
signed by their respective Presidents or Vice Presidents
thereunto duly authorized the day and year first above
written.


                  	National Fuel Gas Supply Corporation
                        (Transporter)



			_______William A. Ross________________
                               Vice President


                        Colonial Gas Company
                        (Shipper)



			_________John P. Harrington____________


			_____Senior Vice President-Gas Supply__
                         		Title



                            AMENDMENT I
		
	Amendment to FSS Service Agreement # 001734
		and FST Service Agreement #N01733
                               
                            between

	NATIONAL FUEL GAS SUPPLY CORPORATION ("TRANSPORTER") AND
		
		COLONIAL GAS COMPANY ("SHIPPER")

			EFFECTIVE MAY 1, 1996

1. The rates to be charged to Shipper under the above-referenced
agreements shall be calculated to recover the revenues that
would have been collected from the Shipper had the Shipper
entered into a new SS-2 Service Agreement for an Annual Storage
Volume of 901,650 Mcf.  To arrive at rates that recover such
revenues, Transporter shall discount the following components,
only as necessary, in the following sequence:

		FSS GRI Reservation
		FST GRI Reservation
		FSS GRI Commodity
		FST GRI Commodity
		FSS Injection/Withdrawal
		FSS Storage Capacity
		FSS Storage Demand

As of the effective date of this Amendment, the rates to be
charged under the above-captioned Agreements are as follows:

                              FSS
                          (Dth basis)
		Storage Demand		$2.1556
		Storage Capacity	$0.0413
		Injection		$0.0000
		Withdrawal		$0.0000
		ACA Commodity		$0.0022
		GRI Reservation		$0.0000
		GRI Commodity		$0.0000

                              FST
                          (Dth basis)
		Reservation		$3.5637
		Gathering Surcharge
			-Reservation	$0.1486
		Commodity		$0.0064
		ACA Commodity		$0.0022
		GRI Reservation		$0.0000
		GRI Commodity		$0.0000

The attached table shows the methodology used to arrive at the
rates set forth above.  If the rates under Rate Schedule SS-2,
FSS or FST change during the term of these agreements, the rates
shown above shall be adjusted, using the same methodology as
that shown on the attached table.  This methodology shall
continue to be used to determine the rates applicable to Shipper
even if Transporter places on file with the Federal Energy
Regulatory Commission a superseding rate schedule, as described
in Article II of the FSS and FST Service Agreement, and elects
to utilize such superseding rate schedule in performance of the
services governed by such agreement.

2. Tranporter shall retain the full Surface Operating Allowance
under the FSS Rate Schedule.  With respect to the service
provided under the FST Rate Schedule, no fuel, loss and
company-use retention shall be applied to quantities transported
between the primary points set forth in the service agreement,
or between the primary injection delivery point or primary
withdrawal receipt point and the following secondary points:

		Tennessee at Ellisburg		Meter 020527
		Transco at Wharton		Meter 6325
		CNG at Ellisburg		Meter 41202
		TransCanada at Niagara		Meter 010902
		Texas Eastern at Bristoria	Meter 70015

Otherwise, the full fuel, loss and company-use retention shall
be applied.

			NATIONAL FUEL GAS SUPPLY CORPORATION


			___William A. Ross______________
			By:_____________________________
			Title:__Vice President__________

			COLONIAL GAS COMPANY


			____John P. Harrington__________
			By:_____________________________
			Title:__Senior Vice President___
				Gas Supply



                      Colonial Gas Rates

		Capacity 		930,450 Dth
		Deliverability		6,203 Dth/day

				SS-2
		
SS-2 or FSS: 		Rate 		Annual Cost

Storage Demand 		$8.1470 	$606,430 
Storage Capacity 	$0.0260		$290,300 
Injection 		$0.0106 	$9,863 
Withdrawal 		$0.0106 	$9,863
Surface operating 
allowance charge 	$0.0106 	$276 
ACA commodity		$0.0000 
GRI reservation 	$0.0000 
GRI commodity $0.0000 

FST: 

Reservation 	
Gathering surcharge reservation 
Commodity 
ACA commodity 
GRI Resrcation 
GRI commodity

TOTAL ANNUAL COSTS 			$916,732

UNIT RATE (per Dth) 			$0.9853

  
				Maximum FSS/FST

SS-2 or FSS:		Maximum Rate	Annual Cost

Storage Demand		$2.1556		$160,454
Storage Capacity	$0.0432		$482,345
Injection		$0.0139		$12,933
Withdrawal		$0.0139		$12,933
Surface operating 
allowance charge
ACA commodity		$0.0022		$2,047
GRI reservation		$0.0000
GRI commodity		$0.0000

FST:

Reservation		$3.5637		$265,268
Gathering surcharge 
reservation		$0.1486		$11,061
Commodity		$0.0064		$11,910
ACA commodity		$0.0022		$4,094
GRI Reservation		$0.0000		
GRI commodity		$0.0000

TOTAL ANNUAL COST			$963,046

UNIT RATE (per Dth)			$1.0350


				Discounted FSS/FST

SS-2 or FSS:		Rate		Annual Cost

Storage Demand		$2.1556		$160,454
Storage Capacity	$0.0432		$461,131
Injection		$0.0000		$0
Withdrawal		$0.0000		$0
Surface operating 
allowance charge	
ACA commodity		$0.0022		$2,047
GRI reservation		$0.0000		
GRI commodity		$0.0000

FST:

Reservation		$3.5637		$265,268
Gathering surcharge
reservation		$0.1486		$11,061
Commodity		$0.0064		$11.910
ACA commodity		$0.0022		$4,094
GRI Reservation		
GRI commodity

TOTAL ANNUAL COSTS			$915,965

UNIT RATE (per Dth)			$0.9844


                       [END OF EXHIBIT 10tt]