Amendatory Agreement
Page 2


                                                                          EX 10

                              AMENDATORY AGREEMENT


         This  Amendment  is entered  into this 1st day of June,  1995,  between
SOUTHERN  NATURAL  GAS  COMPANY   ("Company")  and  ATLANTA  GAS  LIGHT  COMPANY
("Shipper").

                              W I T N E S S E T H:

         WHEREAS,  Company  and  Shipper  are  parties to a firm  transportation
agreement dated November 1, 1994,  (#904460) for 259,812 Mcf per day, as amended
March 1, 1995 ("FT Agreement"); and

         WHEREAS,  Shipper has released  4,000 Mcf per day of its capacity under
the FT Agreement  on a permanent  basis to the City of  Lawrenceville,  Georgia,
effective June 1, 1995; and

         WHEREAS, the parties wish to memorialize such permanent release through
this amendment to the FT Agreement;

         NOW  THEREFORE,  in  consideration  for the  premises  and  the  mutual
promises and covenants contained herein, the parties agree as follows:

     1. The  Transportation  Demand set forth in Section 1.1 of the FT Agreement
shall be revised to be 255,812 Mcf per day effective June 1, 1995.

     2. Section 4.1 of the FT Agreement shall be deleted in its entirety and the
following Section 4.1 substituted therefor:

         4.1      Subject to the provisions hereof,  this Agreement shall become
                  effective as of the date first  hereinabove  written and shall
                  be in full  force and effect for a primary  term  through  the
                  following dates: (a) April 30, 2007 for 110,905 Mcf per day of
                  Transportation  Demand and June 30, 2007 for 1,000 Mcf per day
                  of  Transportation  Demand,  and shall  continue and remain in
                  force and effect for  successive  terms of one year each after
                  the end of each primary term for the specified volume,  unless
                  and until  cancelled with respect to the associated  volume by
                  either party giving 180 days written notice to the other party
                  prior to the end of the  specified  primary term or any yearly
                  extension thereof;  and (b) February 28, 1998, for 143,907 Mcf
                  per day of  Transportation  Demand,  and  shall  continue  and
                  remain in force and  effect for  successive  terms of one year
                  each  thereafter if the parties  mutually  agree in writing to
                  each such yearly  extension  at least 60 days prior to the end
                  of the primary term or subsequent yearly extension.

         3. The current Exhibits A and B to the FT Agreement shall be deleted in
their entirety and the First Revised  Exhibits A and B attached hereto effective
June 1, 1995, shall be substituted therefor.

         4. Except as provided  herein,  the FT  Agreement  shall remain in full
force and effect as written and as amended effective March 1, 1995.

         5. This  Amendment is subject to all  applicable,  valid laws,  orders,
rules and regulations of any governmental  entity having  jurisdiction  over the
parties or the subject matter hereof.

         WHEREFORE,  the parties have executed this Amendment through their duly
authorized representatives to be effective as of the date first written above.

ATTEST:                                             SOUTHERN NATURAL GAS COMPANY


By:      R. David Hendrickson                        By:      Joel A. Anderson
Title: Secretary                                     Title: Vice President


ATTEST:                                              ATLANTA GAS LIGHT COMPANY


By:      Melanie M. Platt                            By:      Stephen J. Gunther
Title: Corporate Secretary                           Title: Vice President