TRANSCONTINENTAL GAS PIPE LINE CORP
10-K, 2000-03-29
NATURAL GAS TRANSMISSION
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-K

[X] ANNUAL REPORT PURSUANT TO SECTION 13 OR
    15(d)  OF THE  SECURITIES  EXCHANGE  ACT OF 1934
                  FOR THE FISCAL YEAR ENDED DECEMBER 31, 1999
                                       OR
[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
    OF THE SECURITIES EXCHANGE ACT OF 1934
        FOR THE TRANSITION PERIOD FROM            TO
                                       ----------   -----------
                          COMMISSION FILE NUMBER 1-7584

                   TRANSCONTINENTAL GAS PIPE LINE CORPORATION
             ------------------------------------------------------
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

           DELAWARE                             74-1079400
- -------------------------------            --------------------
(STATE OR OTHER JURISDICTION OF            (I.R.S. EMPLOYER
INCORPORATION OR ORGANIZATION)              IDENTIFICATION NO.)

2800 POST OAK BLVD., P. O. BOX 1396, HOUSTON, TEXAS               77251
- ---------------------------------------------------              --------
(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)                         ZIP CODE

REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE           (713) 215-2000
                                                          --------------------

           SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:

                                      NONE

           SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT:

                                      NONE

          INDICATE  BY CHECK  MARK  WHETHER  THE  REGISTRANT  (1) HAS  FILED ALL
REPORTS  REQUIRED TO BE FILED BY SECTION 13 OR 15(d) OF THE SECURITIES  EXCHANGE
ACT OF 1934 DURING THE PRECEDING 12 MONTHS (OR FOR SUCH SHORTER  PERIOD THAT THE
REGISTRANT WAS REQUIRED TO FILE SUCH REPORTS),  AND (2) HAS BEEN SUBJECT TO SUCH
FILING REQUIREMENTS FOR THE PAST 90 DAYS.

YES X     NO
   ---      ---

          INDICATE BY CHECK MARK IF DISCLOSURE OF DELINQUENT  FILERS PURSUANT TO
ITEM 405 OF REGULATION S-K IS NOT CONTAINED  HEREIN,  AND WILL NOT BE CONTAINED,
TO THE BEST OF  REGISTRANT'S  KNOWLEDGE,  IN  DEFINITIVE  PROXY  OR  INFORMATION
STATEMENTS  INCORPORATED  BY  REFERENCE  IN PART  III OF THIS  FORM  10-K OR ANY
AMENDMENT TO THIS FORM 10-K. [X]


THE NUMBER OF SHARES OF COMMON  STOCK,  PAR VALUE  $1.00 PER SHARE, OUTSTANDING
AT JANUARY 31, 2000 WAS 100.

          THE REGISTRANT  MEETS THE CONDITIONS SET FORTH IN GENERAL  INSTRUCTION
(I)(1)(a)  AND (b) OF FORM 10-K AND IS THEREFORE  FILING THIS FORM 10-K WITH THE
REDUCED DISCLOSURE FORMAT.


<PAGE>




                                     PART I

ITEM 1.      BUSINESS.

                                     GENERAL

      Transcontinental  Gas Pipe Line  Corporation  (Transco)  is an  interstate
natural  gas  transmission  company  which owns a natural  gas  pipeline  system
extending from Texas, Louisiana,  Mississippi and the Gulf of Mexico through the
states of Alabama, Georgia, South Carolina, North Carolina,  Virginia, Maryland,
Pennsylvania and New Jersey to the New York City metropolitan area. Transco also
holds a  minority  interest  in an  intrastate  natural  gas  pipeline  in North
Carolina. Transco's principal business is the transportation of natural gas.

      The number of full time  employees  of Transco at  December  31,  1999 was
1,467.

      Transco is an indirect wholly-owned subsidiary of The Williams Companies,
Inc. (Williams).

      At December 31, 1999, Transco's system had a mainline delivery capacity of
approximately  3.8 Bcf <F1> of gas per day from production areas to its  primary
markets.  Using its Leidy Line and  market-area  storage  capacity,  Transco can
deliver an additional 2.9 Bcf of gas per day for a system-wide delivery capacity
total of  approximately  6.7 Bcf of gas per  day.  The  system  is  composed  of
approximately  10,500 miles of mainline and branch  transmission  pipelines,  45
compressor  stations,  seven  storage  locations  and  four  processing  plants.
Compression  facilities  at sea level rated  capacity  total  approximately  1.3
million horsepower.

      Transco  has natural gas  storage  capacity  in five  underground  storage
fields  located on or near its pipeline  system and/or market areas and operates
three of these storage fields. In addition,  Transco has storage capacity in two
liquefied  natural  gas (LNG)  storage  facilities  and  operates  both of these
facilities.  The total top gas  storage  capacity  available  to Transco and its
customers in such storage fields and LNG facilities and through  storage service
contracts is approximately  220 Bcf of gas.  Storage capacity permits  Transco's
customers to inject gas into storage during the summer and off-peak  periods for
delivery during peak winter demand periods.

<F1> As used in this report, the term "Mcf" means thousand cubic feet, the term
"MMcf" means million cubic feet, the term "Bcf" means billion cubic feet, the
term "Tcf" means trillion cubic feet, the term "Mcf/d" means thousand cubic feet
per day, the term "MMcf/d" means million cubic feet per day, the term "Bcf/d"
means billion cubic feet per day, the term "MMBtu" means million British Thermal
Units, the term "TBtu" means trillion British Thermal Units and the term "Dt"
means dekatherm.
<PAGE>

      Transco's gas pipeline  facilities are generally owned in fee. However,  a
substantial  portion of such facilities are constructed and maintained  pursuant
to rights-of-way,  easements,  permits,  licenses or consents on and across real
property owned by others. Compressor stations, with appurtenant facilities,  are
located in whole or in part either on lands owned or on sites held under  leases
or permits issued or approved by public authorities.  The storage facilities are
either owned or contracted for under long-term leases or easements.

      In 1992, the Federal Energy Regulatory  Commission (FERC) issued Order 636
which made  fundamental  changes in the way natural gas pipelines  conduct their
businesses.  The  FERC's  stated  purpose  of  Order  636  was  to  improve  the
competitive  structure  of the natural gas  pipeline  industry  by,  among other
things,  unbundling  a  pipeline's  merchant  service  from  its  transportation
services;  ensuring "equality" of transportation services including equal access
to all sources of gas; providing  "no-notice" firm transportation  services that
are equal in quality to bundled sales service;  establishing a capacity  release
program and changing rate design methodology from modified  fixed-variable (MFV)
to straight  fixed-variable  (SFV),  unless the pipeline and its customers agree
to,  and the  FERC  approves,  a  different  form of  rate  design  methodology.
Effective  November 1, 1993,  Transco  implemented  its Order 636  restructuring
plan. On February 9, 2000,  the FERC issued Order 637 which further  revised its
regulations  with the stated  purpose of improving the  efficiency of the market
while  protecting  against  the  exercise  of market  power by waiving the price
ceiling  on  short  term  capacity  releases,  allowing  pipelines  to file  for
peak/offpeak   rates  and  term   differentiated   rates,   clarifying   certain
transportation   service   policies,   and  increasing   transaction   reporting
requirements.

      Through an agency agreement with Transco, Williams Energy Services Company
(WESCO), an affiliate of Transco,  manages Transco's jurisdictional merchant gas
sales.

      In May 1995,  the operation of certain  production  area  facilities  were
transferred to Williams Field Services Group, Inc. (WFS), an affiliated company.
In  February  1996,  Transco  filed  an  application  with the FERC for an order
authorizing the abandonment of certain  facilities  located onshore and offshore
in Texas,  Louisiana and  Mississippi by conveyance to Williams Gas Processing -
Gulf Coast Company (Gas Processing), an affiliate of Transco. The net book value
recorded by Transco at December  31, 1999 of the  facilities  was  approximately
$475 million.  Operating  income recorded by Transco for the year ended December
31, 1999 associated with the facilities was $11 million; however, such operating
income may not be  representative  of the effects of the  spin-down on Transco's
future  operating income due to various  factors,  including  future  regulatory
actions.  Concurrently,  Gas Processing  filed a petition for declaratory  order
requesting a determination  that its gathering services and rates be exempt from
FERC regulation  under the Natural Gas Act of 1938 (NGA). On September 25, 1996,
the FERC issued an order dismissing  Transco's  application and Gas Processing's
petition for declaratory  order. On October 25, 1996, Transco and Gas Processing
filed a joint  request for  rehearing  of the FERC's  September 25 order and, in
August 1997, filed a request that rehearing be expedited.

<PAGE>

      In February  1998,  Transco  filed an  application  with the FERC  seeking
authorization  to abandon  Transco's  onshore  Tilden/McMullen  Gathering System
located  in  Texas by  conveyance  to Gas  Processing.  Gas  Processing  filed a
contemporaneous  request that the FERC declare that the facilities  sought to be
abandoned  would  be  considered  nonjurisdictional  gathering  facilities  upon
transfer to Gas  Processing.  In May 1999,  the FERC issued an order in which it
determined  that certain of the facilities  would be gathering  facilities  upon
transfer to Gas Processing,  i.e., 1) those facilities upstream of and including
the Tilden Plant, 2) the South McMullen and Goebel Laterals  located  downstream
of the Tilden Plant, and 3) the small,  short laterals which branch out from the
McMullen  Lateral  downstream  of the Tilden  Plant at several  points along its
length.  However,  the FERC determined that the McMullen Lateral itself, as well
as two compressor  units, are  jurisdictional  facilities,  but authorized their
abandonment  subject to Gas Processing  obtaining a certificate to operate those
facilities.  The net book  value at  December  31,  1999 of the  Tilden/McMullen
facilities was  approximately  $62 million.  Operating income for the year ended
December 31, 1999 associated with those  facilities is estimated to be less than
$3 million;  however,  such operating  income may not be  representative  of the
effects of the  spin-down on Transco's  future  operating  income due to various
factors,  including future regulatory  actions. On June 3, 1999, Transco and Gas
Processing  filed for  rehearing  of the  order  with  regard to the  facilities
classified by the FERC as jurisdictional facilities, and on October 5, 1999, the
FERC denied the rehearing request. On March 7, 2000, Transco filed a limited NGA
section 4 filing  with the FERC,  notifying  the FERC that  Transco  intended to
effectuate  the spin-down to Gas  Processing of the  Tilden-McMullen  facilities
determined by the FERC to be gathering facilities to be effective April 1, 2000,
and  adjusting  Transco's  rates  on a  prospective  basis  effective  with  the
spin-down to reflect a decrease in Transco's overall cost of service,  rate base
and operation and maintenance expense resulting from the spin-down. The net book
value of the facilities included in this limited NGA filing is approximately $19
million  and  annual  operating  income  associated  with  these  facilities  is
estimated to be less than $1 million.

                           MARKETS AND TRANSPORTATION

      Transco's natural gas pipeline system serves customers in Texas and eleven
southeast and Atlantic  seaboard states  including major  metropolitan  areas in
Georgia, North Carolina, New York, New Jersey and Pennsylvania.

      Transco's  major gas  transportation  customers  are public  utilities and
municipalities that provide service to residential,  commercial,  industrial and
electric  generation end users.  Shippers on Transco's  pipeline  system include
public utilities, municipalities, intrastate pipelines, direct industrial users,
electrical  generators,  gas  marketers  and  producers.  Transco's  two largest
customers in 1999 were Public Service  Electric and Gas Company and Consolidated
Edison Company of New York, Inc., which accounted for  approximately 8.5 percent
and 7.6 percent,  respectively, of Transco's total operating revenues. Transco's
firm transportation  agreements are generally long-term  agreements with various
expiration  dates and  account  for the major  portion  of  Transco's  business.
Additionally, Transco offers interruptible transportation services under shorter
term agreements.
<PAGE>

      Transco's  total system  deliveries for the years 1999,  1998 and 1997 are
shown below.
<TABLE>
<CAPTION>

Transco System Deliveries (TBtu)                                    1999             1998            1997
- ----------------------------------------                        -------------     ------------    ------------
<S>                                                                 <C>              <C>             <C>
Market-area deliveries
      Long-haul transportation .........................              820.0            857.8           940.2
      Market-area transportation .......................              622.6            522.1           438.9
                                                                -------------     ------------    ------------
      Total market-area deliveries .....................            1,442.6          1,379.9         1,379.1
Production-area transportation .........................              222.0            214.0           242.0
                                                                -------------     ------------    ------------
Total system deliveries ................................            1,664.6          1,593.9         1,621.1
                                                                =============     ============    ============

Average Daily Transportation Volumes (TBtu) ............                4.6              4.4             4.4
Average Daily Firm Reserved Capacity (TBtu) ............                6.3              5.8             5.5
</TABLE>


      Transco's  facilities are divided into seven rate zones.  Four are located
in the  production  area and three are  located  in the market  area.  Long-haul
transportation is gas that is received in one of the  production-area  zones and
delivered in a market-area zone. Market-area  transportation is gas that is both
received and delivered within market-area zones. Production-area  transportation
is gas that is both received and delivered within production-area zones.

                                PIPELINE PROJECTS

      PROJECTS IN SERVICE In 1999,  Pine Needle LNG  Company,  LLC and  Cardinal
Pipeline Company,  LLC, both of which are owned by wholly-owned  subsidiaries of
Transco and several of its customers, completed construction of, and placed into
service,  two major projects,  a LNG storage facility and the Cardinal  Pipeline
Project (Cardinal),  respectively.  Transco contributed $19 million to the total
cost of the LNG  storage  facility  which is located in Guilford  County,  North
Carolina.  The  facility  was placed  into  service in May 1999 and has 4 Bcf of
storage   capacity  and  400  MMcf/d  of   withdrawal   capacity.   Wholly-owned
subsidiaries of Transco operate the facility and have a 35% ownership  interest.
On November 1, 1999,  Cardinal Pipeline  Company,  LLC, a North Carolina limited
liability company formed between wholly-owned  subsidiaries of Transco and three
of Transco's North Carolina  customers,  placed  Cardinal into service.  Transco
contributed  $24 million to the total cost of this  project  which  involved the
acquisition of an existing  37-mile  pipeline in North Carolina and construction
of an approximately  67-mile  extension of the pipeline to new  interconnections
near Clayton  County,  North  Carolina.  This pipeline  provides  transportation
service of up to 270 MMcf/d of natural gas.  Transco's  wholly-owned  subsidiary
has a 45% ownership interest in Cardinal and a separate wholly-owned  subsidiary
of Transco is the operator of Cardinal.

      CUMBERLAND  PIPELINE PROJECT In 1999,  Cumberland Gas Pipeline Company,  a
partnership between wholly-owned subsidiaries of Transco and AGL Resources Inc.,
decided not to pursue its pipeline project at this time. In lieu of the project,
Transco intends to expand the capacity of its North Georgia extension as part of
the  SouthCoast  Expansion  Project (see below) to meet the firm  transportation
service requirements of its shippers.
<PAGE>

      MARKETLINK EXPANSION PROJECT On May 13, 1998, Transco filed an application
with the FERC for  approval to  construct  and operate  mainline  and Leidy Line
facilities to create an additional 676 MMcf/d of firm transportation capacity to
serve increased  demand in the  mid-Atlantic  and south Atlantic  regions of the
United States by a targeted  in-service  date of November 1, 2000. The estimated
cost of the proposed  facilities is $529 million. On December 17, 1999, the FERC
issued an interim  order giving  Transco  conditional  approval for  MarketLink,
along with the  Independence  Pipeline  Project  (see  below)  and ANR  Pipeline
Company's Supply Link Project but withholding  final  certificate  authorization
until  Independence  Pipeline  Company  (Independence)  and ANR Pipeline Company
(ANR) file  long-term,  executed  contracts with  nonaffiliated  shippers for at
least  35% of the  capacity  of their  respective  projects.  While the FERC has
treated the three projects as interrelated,  should Independence and ANR fail to
meet the executed contract conditions, the interim order states that Transco may
amend  its  MarketLink  project  to go  forward  on a  stand-alone  basis.  Once
construction begins, the order also imposed a number of additional environmental
conditions,   beyond  those  recommended  in  the  Final  Environmental   Impact
Statement. Transco has filed for rehearing of the interim order.

      INDEPENDENCE  PIPELINE PROJECT In March 1997, as amended in December 1997,
Independence  filed an  application  with FERC for  approval  to  construct  and
operate a new pipeline  consisting  of  approximately  400 miles of 36-inch pipe
from ANR Pipeline  Company's existing  compressor  station at Defiance,  Ohio to
Transco's facilities at Leidy,  Pennsylvania.  The Independence Pipeline Project
is proposed to provide approximately 916 MMcf/d of firm transportation  capacity
by a requested  in-service date of November 2000.  Independence is owned equally
by wholly-owned subsidiaries of Transco, ANR, and National Fuel Gas Company. The
estimated   cost  of  the  project  is  $678  million,   and  Transco's   equity
contributions  are  estimated  to be  approximately  $68  million  based  on its
expected  one-third  ownership  interest in the project.  As mentioned  above in
connection  with the  MarketLink  Project,  on  December  17, 1999 the FERC gave
conditional  approval  for  the  Independence   Pipeline  project,   subject  to
Independence  filing long-term,  executed contracts with nonaffiliated  shippers
for at least 35% of the capacity of the project. Also, the FERC imposed a number
of additional  environmental conditions once construction begins on the project.
Independence has filed for rehearing of the interim order.

      CROSS BAY  PIPELINE  PROJECT  Subsidiaries  of  Transco,  Duke  Energy and
KeySpan Energy have formed Cross Bay SM Pipeline Company, L.L.C.(Cross Bay). The
Cross Bay Pipeline  Project is designed to increase  natural gas deliveries into
the New York City  metropolitan  area by installing  compression  and looping to
expand the capacity of Transco's  existing Long Beach  Lateral by  approximately
121 MMcf/d.  The project is targeted to be placed into  service in the winter of
2001-2002  and is estimated  to cost  approximately  $50  million.  Wholly-owned
subsidiaries  of  Transco  will  operate  Cross  Bay and have a 37.5%  ownership
interest. Transco expects to make equity investments of approximately $5 million
in this project.
<PAGE>

      BUCCANEER  PIPELINE  PROJECT In December 1999,  Transco  assigned its 100%
equity  interest in the Buccaneer Gas Pipeline  Company,  L.L.C.  (Buccaneer) to
Transco's parent,  Williams Gas Pipeline Company (WGP).  Buccaneer is a proposed
natural gas pipeline  project  extending  from the Mobile Bay area in Alabama to
delivery points in Florida.

      SOUTHCOAST  EXPANSION PROJECT In April 1999,  Transco filed an application
with the FERC for its approval of the  SouthCoast  Expansion  Project,  which is
designed to create  approximately  200 MMcf/d of additional firm  transportation
capacity on Transco's system from the terminus of Transco's  existing Mobile Bay
Lateral in Choctaw County,  Alabama, to delivery points in Transco's Rate Zone 4
(Alabama and Georgia).  The project has a target  in-service date of November 1,
2000 and an estimated cost of approximately $108 million.

      SUNDANCE  EXPANSION PROJECT In April 1999,  Transco announced its Sundance
Expansion  Project,  which would create  approximately  228 MMcf/d of additional
firm transportation  capacity from Transco's Station 65 in Louisiana to delivery
points in Georgia, South Carolina and North Carolina.  Transco plans to file for
FERC  approval  of the project in the first  quarter of 2000.  The project has a
target  in-service date of May 2002 and an estimated cost of approximately  $129
million.

                               REGULATORY MATTERS

      Transco's transportation rates are established through the FERC ratemaking
process.  Key determinants in the ratemaking  process are (i) volume  throughput
assumptions, (ii) costs of providing service, including depreciation expense and
(iii)  allowed rate of return,  including  the equity  component of a pipeline's
capital  structure and related  income taxes.  Rate design and the allocation of
costs between the demand and  commodity  rates also impact  profitability.  As a
result of the ratemaking  process, a portion of Transco's revenues may have been
collected subject to refund.

      Effective  September 1, 1992,  Transco changed from the MFV method of rate
design to the SFV method of rate design.  Under MFV rate  design,  substantially
all fixed costs,  with the exception of return on equity and income  taxes,  are
included in a demand  charge to customers  and return on equity and income taxes
are recovered as part of a volumetric  charge to customers.  Accordingly,  under
MFV rate  design,  overall  throughput  has a  significant  impact on  operating
income.  Under the SFV method of rate  design,  substantially  all fixed  costs,
including  return on equity and income taxes, are included in a demand charge to
customers  and all variable  costs are recovered  through a commodity  charge to
customers. While the use of SFV rate design limits Transco's opportunity to earn
incremental revenues through increased throughput, it also limits Transco's risk
associated with fluctuations in throughput.
<PAGE>

      For a discussion of additional regulatory matters, see "Item 8.  Financial
Statements and Supplementary Data - Notes to Consolidated Financial Statements -
3. Contingent  Liabilities  and Commitments - Rate and Regulatory Matters."

                                  SALES SERVICE

      As discussed above,  WESCO manages Transco's  jurisdictional  merchant gas
sales,  which are made to  customers  pursuant  to a blanket  sales  certificate
issued  by the FERC.  Most of these  sales are made  through a Firm  Sales  (FS)
program  which gives  customers the option to purchase  daily  quantities of gas
from  Transco  at  market-responsive  prices  in  exchange  for a demand  charge
payment.

      Transco's gas sales volumes  managed by WESCO for the years 1999, 1998 and
1997 are shown below.
<TABLE>
<CAPTION>

Gas Sales Volumes (TBtu)                           1999              1998              1997
- ------------------------------                 --------------    -------------     -------------
<S>                                                 <C>               <C>               <C>
Long-term sales ........................            196.2             176.0             192.9

Short-term sales .......................             38.4              25.0              21.8
                                               --------------    -------------     -------------

       Total gas sales .................            234.6             201.0             214.7
                                               ==============    =============     =============
</TABLE>

                          TRANSACTIONS WITH AFFILIATES

      Transco engages in transactions with Williams and other Williams
subsidiaries, characteristic of group operations.  See "Item 8. Financial
Statements and Supplementary  Data - Notes to Consolidated Financial Statements-
2. Summary of  Significant  Accounting  Policies and 8. Transactions  With Major
Customers and Affiliates."

                                   REGULATION

      INTERSTATE GAS PIPELINE OPERATIONS Transco's  interstate  transmission and
storage activities are subject to regulation by the FERC under the NGA and under
the Natural Gas Policy Act of 1978  (NGPA),  and, as such,  Transco's  rates and
charges  for the  transportation  of natural  gas in  interstate  commerce,  the
extension,   enlargement  or  abandonment  of  jurisdictional   facilities,  and
accounting,  among  other  things,  are  subject to  regulation.  Transco  holds
certificates of public  convenience and necessity issued by the FERC authorizing
ownership and operation of all pipelines,  facilities and properties  considered
jurisdictional  for which  certificates  are required under the NGA.  Transco is
also subject to the Natural Gas Pipeline Safety Act of 1968, as amended by Title
I of the Pipeline Safety Act of 1979, which regulates safety requirements in the
design,  construction,  operation and maintenance of interstate gas transmission
facilities.

      INTRASTATE GAS PIPELINE  OPERATIONS The Cardinal  Pipeline  System Project
(see Part I, Item 1, Pipeline Projects) is a North Carolina natural gas pipeline
project which is subject to the  jurisdiction  of the North  Carolina  Utilities
Commission.
<PAGE>

      ENVIRONMENTAL Transco is subject to the National  Environmental Policy Act
and  federal,  state and local laws and  regulations  relating to  environmental
quality control.  Management  believes that Transco's  pipeline  competitors are
also subject to similar laws and regulations  relating to environmental  quality
control.   Management  further  believes  that,  with  respect  to  any  capital
expenditures and operation and maintenance  expenses required to meet applicable
environmental standards and regulations, the FERC would grant the requisite rate
relief so that,  for the most part,  such  expenditures  would be recoverable in
rates.  For these reasons,  management  believes that compliance with applicable
environmental  requirements  is not  likely to have a material  effect  upon its
competitive  position  or  earnings.  See  "Item  8.  Financial  Statements  and
Supplementary Data - Notes to Consolidated Financial Statements - 3.
Contingent Liabilities and Commitments - Environmental Matters."

                                   COMPETITION

      The  natural  gas  industry  has  undergone  tremendous  change  since the
issuance  of FERC Order 636 in 1992.  Order 636  required  that the  natural gas
sales, transportation, and other services that were formerly provided in bundled
form by pipelines be  separated,  resulting  in  non-discriminatory  open access
transportation  services, and encouraged the establishment of market hubs. These
and  other  factors  have  led to a  commodity  market  in  natural  gas  and to
increasingly competitive markets in natural gas services,  including competitive
secondary markets in pipeline capacity. As a result,  pipeline capacity is being
used more  efficiently,  and  peaking  and  storage  services  are  increasingly
effective  substitutes for annual pipeline  capacity.  These  efficiencies  have
increased the risk for pipelines of contract non-renewal or capacity turnback.

      In July  1998,  the FERC  issued a Notice of  Proposed  Rulemaking  (NOPR)
concerning the regulation of short-term  transportation services and a Notice of
Inquiry (NOI) addressing  long-term  transportation  services.  The scope of the
inquiry initiated by these two proceedings and the potential policy implications
are unprecedented in the history of natural gas regulation. On February 9, 2000,
the FERC issued a final rule, Order 637, in response to the comments received on
the NOPR and NOI.  The FERC adopts in Order 637 certain  policies  that it finds
are  necessary  to  adjust  its  current  regulatory  model to the  needs of the
evolving markets,  but determines that any fundamental changes to its regulatory
policy,  which changes were raised and commented on in the NOPR and NOI, will be
considered after further study and evaluation of the evolving  marketplace.  The
Order revises its pricing policy to waive,  for a two-year  period,  the maximum
price  ceilings for  short-term  releases of capacity of less than one year, and
permits  pipelines to file proposals to implement  seasonal rates for short-term
services  and   term-differentiated   rates,  subject  to  certain  requirements
including the  requirement  that a pipeline be limited to recovering  its annual
revenue requirement under those rates.
<PAGE>

      At  the  state  level,   both  LDC   unbundling   and  electric   industry
restructuring are affecting  Transco's  markets.  On the gas side, several state
jurisdictions have been involved in implementing  changes similar to the changes
that have occurred at the federal  level under Order 636. New York,  New Jersey,
Pennsylvania,  Maryland,  Delaware and Georgia have established  regulations for
LDC  unbundling  and are  currently  implementing  them on a  company-by-company
basis.  To  date,  none of  these  changes  at the  state  level  have  required
renegotiations of Transco's current LDC contracts nor have these states required
significant alteration in the operation of the pipeline.

      The  potential   impact  of  electric  power  industry   restructuring  is
particularly   uncertain.   Gas  competes  with   electricity  in   residential,
commercial,  and  industrial  end uses,  and also  competes  with  other  fuels,
especially  coal and fuel  oil,  in  electricity  generation.  Gas use for power
generation  is expected to increase  sharply  during the next decade due to both
regulatory changes and new power generation  technologies,  although the size of
this increase remains uncertain.  In addition, the restructuring of both the gas
and electric  industries is facilitating  the convergence of the two industries,
resulting  in mergers and  acquisitions  that are changing the face and business
mix of Transco's competitors.

                           FORWARD-LOOKING STATEMENTS

      Certain   matters   discussed   in  this  report,   excluding   historical
information,  include  forward-looking  statements  --  statements  that discuss
Transco's  expected  future  results  based  on  current  and  pending  business
operations. Transco makes these forwarding-looking statements in reliance on the
safe harbor protections provided under the Private Securities  Litigation Reform
Act of 1995.

      Forward-looking   statements   can  be   identified   by  words   such  as
"anticipates,"   "believes,"   "expects,"  "planned,"   "scheduled"  or  similar
expressions.  Although  Transco  believes these  forward-looking  statements are
based on reasonable  assumptions,  statements made regarding  future results are
subject to numerous  assumptions,  uncertainties and risks that may cause future
results to be materially  different  from the results  stated or implied in this
document.

      The  following are  important  factors that could cause actual  results to
differ materially from any results projected,  forecasted, estimated or budgeted
by Transco in forward-looking statements: (i) risks and uncertainties related to
changes in general economic conditions in the United States, changes in laws and
regulations  to which  Transco is  subject,  including  tax,  environmental  and
employment   laws  and   regulations,   the  cost  and   effects  of  legal  and
administrative  claims and proceedings  against  Transco or its  subsidiaries or
which may be brought against Transco or its subsidiaries,  the effect of changes
in accounting  policies,  and conditions of the capital markets Transco utilizes
to access capital to finance operations; (ii) risks and uncertainties related to
the  impact of future  federal  and state  regulation  of  business  activities,
including  allowed rates of return,  the pace of  deregulation in retail natural
gas markets,  and the resolution of other regulatory  matters  discussed herein;
(iii) risks and uncertainties related to the ability to develop expanded markets
as well as maintaining existing markets; (iv) risks and uncertainties related to
the ability to obtain  governmental and regulatory approval of various expansion
projects;  (v) risks and  uncertainties  related to the ability to  successfully
implement  key systems  such as a service  delivery  system,  and (vi) risks and
uncertainties  related to the  ability to control  costs.  In  addition,  future
utilization of pipeline  capacity can depend on energy prices,  competition from
other pipelines and alternative  fuels, the general level of natural gas demand,
decisions  by  customers  not  to  renew  expiring  natural  gas  transportation
contracts and weather conditions,  among other things. Further, gas prices which
directly  impact   transportation   and  operating   profits  may  fluctuate  in
unpredictable ways.
<PAGE>

ITEM 2. PROPERTIES.

      See "Item 1. Business."


ITEM 3. LEGAL PROCEEDINGS.

      GATHERING  FACILITIES  SPIN-DOWN  ORDER  (DOCKET  NOS.   CP96-206-000  AND
CP96-207- 000) In February 1996,  Transco filed an application with the FERC for
an order authorizing the abandonment of certain  facilities  located onshore and
offshore in Texas, Louisiana and Mississippi by conveyance to Gas Processing, an
affiliate  of Transco.  The net book value  recorded by Transco at December  31,
1999 of the facilities was approximately $475 million. Operating income recorded
by Transco for the year ended December 31, 1999  associated  with the facilities
was $11 million; however, such operating income may not be representative of the
effects of the  spin-down on Transco's  future  operating  income due to various
factors, including future regulatory actions. Concurrently, Gas Processing filed
a petition for declaratory  order requesting a determination  that its gathering
services  and rates be exempt from FERC  regulation  under the NGA. On September
25, 1996,  the FERC issued an order  dismissing  Transco's  application  and Gas
Processing's  petition for declaratory  order. On October 25, 1996,  Transco and
Gas  Processing  filed a joint request for rehearing of the FERC's  September 25
order and, in August 1997, filed a request that rehearing be expedited.

      TILDEN/MCMULLEN  FACILITIES SPIN-DOWN PROCEEDING (DOCKET NOS. CP98-236 AND
242) In  February  1998,  Transco  filed an  application  with the FERC  seeking
authorization  to abandon  Transco's  onshore  Tilden/McMullen  Gathering System
located  in  Texas by  conveyance  to Gas  Processing.  Gas  Processing  filed a
contemporaneous  request that the FERC declare that the facilities  sought to be
abandoned  would  be  considered  nonjurisdictional  gathering  facilities  upon
transfer to Gas  Processing.  In May 1999,  the FERC issued an order in which it
determined  that certain of the facilities  would be gathering  facilities  upon
transfer to Gas Processing,  i.e., 1) those facilities upstream of and including
the Tilden Plant, 2) the South McMullen and Goebel Laterals  located  downstream
of the Tilden Plant, and 3) the small,  short laterals which branch out from the
McMullen  Lateral  downstream  of the Tilden  Plant at several  points along its
length.  However,  the FERC determined that the McMullen Lateral itself, as well
as two compressor  units, are  jurisdictional  facilities,  but authorized their
abandonment  subject to Gas Processing  obtaining a certificate to operate those
facilities.  The net book  value at  December  31,  1999 of the  Tilden/McMullen
facilities was  approximately  $62 million.  Operating income for the year ended
December 31, 1999 associated with those  facilities is estimated to be less than
$3 million;  however,  such operating  income may not be  representative  of the
effects of the  spin-down on Transco's  future  operating  income due to various
factors,  including future regulatory  actions. On June 3, 1999, Transco and Gas
Processing  filed for  rehearing  of the  order  with  regard to the  facilities
classified by the FERC as jurisdictional facilities, and on October 5, 1999, the
FERC denied the rehearing request. On March 7, 2000, Transco filed a limited NGA
section 4 filing  with the FERC,  notifying  the FERC that  Transco  intended to
effectuate  the spin-down to Gas  Processing of the  Tilden-McMullen  facilities
determined by the FERC to be gathering facilities to be effective April 1, 2000,
and  adjusting  Transco's  rates  on a  prospective  basis  effective  with  the
spin-down to reflect a decrease in Transco's overall cost of service,  rate base
and operation and maintenance expense resulting from the spin-down. The net book
value of the facilities included in this limited NGA filing is approximately $19
million  and  annual  operating  income  associated  with  these  facilities  is
estimated to be less than $1 million.
<PAGE>

      ROYALTY CLAIMS AND LITIGATION In connection with Transco's  renegotiations
with producers to resolve take-or-pay and other contract claims and to amend gas
purchase  contracts,  Transco entered into certain settlements which may require
the indemnification by Transco of certain claims for additional  royalties which
the  producers may be required to pay as a result of such  settlements.  Transco
has been made aware of demands on producers  for  additional  royalties and such
producers may receive other demands which could result in claims against Transco
pursuant to the  indemnification  provisions  in their  respective  settlements.
Indemnification  for royalties will depend on, among other things,  the specific
lease  provisions  between  the  producer  and the  lessor  and the terms of the
settlement between the producer and Transco.

      On March 15,  1994,  a lawsuit  was filed in the 189th  Judicial  District
Court of Harris County, Texas (Texaco,  Inc. vs.  Transcontinental Gas Pipe Line
Corporation).  In this  lawsuit,  the plaintiff  has claimed  approximately  $23
million, including interest and attorneys' fees for reimbursements of settlement
amounts paid to royalty owners. On October 16, 1997, a jury verdict in this case
found that  Transco was  required to pay Texaco  damages of $14.5  million  plus
$3.75 million in attorney's  fees. The trial judge initially  deferred  entering
judgment and directed  the parties to  participate  in mediation of this matter.
Following  mediation  in 1998,  which  did not  result in a  resolution  of this
matter,  the trial judge entered  judgment  consistent with the jury verdict and
also awarded  prejudgment  interest of $5.0  million.  Transco is appealing  the
verdict and  continues to believe that it has  meritorious  defenses to Texaco's
claims.

      In  addition,  Transco was  notified by  Freeport-McMoRan,  Inc.  (FMP) in
February 1995, that pursuant to a settlement with the Mineral Management Service
(MMS) of the MMS' claim for royalties due under gas  contracts  between  Transco
and FMP which had been modified  pursuant to settlement  agreements made in 1986
and 1989,  FMP was asserting a claim for  indemnification  of  approximately  $6
million,  including  interest,  under the  excess  royalty  provisions  of those
settlement  agreements.  On or about March 30,  1995,  FMP filed a petition  for
specific performance seeking recovery against Transco for the sums claimed under
the settlement agreements.  In May 1998, FMP filed a motion for summary judgment
which Transco opposed. In September 1998, the court granted FMP's motion finding
that  at  least  a  portion  of  FMP's   payment  to  the  MMS  was  subject  to
indemnification. Transco has appealed the court's ruling.
<PAGE>

      In August 1996, a lawsuit was filed  against  Transco and certain  Transco
affiliates by a royalty owner in a gas producing  field in Brooks County,  Texas
alleging a claim for incorrect  computation of royalties.  Transco is alleged to
have purchased gas from the field. Transco has filed an answer denying liability
for the claim.

      In 1998, the United States  Department of Justice  informed  Williams that
Jack  Grynberg,  an individual,  had filed claims in the United States  District
Court for the District of Colorado  under the False Claims Act against  Williams
and certain of its wholly owned subsidiaries including Transco. Mr. Grynberg has
also filed claims against  approximately  300 other energy companies and alleges
that the  defendants  violated  the  False  Claims  Act in  connection  with the
measurement  and purchase of  hydrocarbons.  The relief sought is an unspecified
amount  of  royalties  allegedly  not  paid to the  federal  government,  treble
damages,  a civil penalty,  attorneys'  fees,  and costs.  On April 9, 1999, the
United States Department of Justice announced that it was declining to intervene
in any of the Grynberg  qui tam cases;  including  the action filed  against the
Williams  entities  in the United  States  District  Court for the  District  of
Colorado.   On  October  21,  1999,  the  Panel  on  Multi-District   Litigation
transferred  all of the Grynberg qui tam cases,  including  those filed  against
Williams,  to the United States  District  Court for the District of Wyoming for
pre-trial purposes.

ENVIRONMENTAL MATTERS

      In July 1999,  Transco  received a letter stating that the U.S. Department
of Justice (DOJ), at the request  of the U.S.  Environmental  Protection  Agency
(EPA),  intends  to file a civil  action  against Transco arising from its waste
management  practices  at  Transco's  compressor  stations and metering stations
located in eleven (11) states from Texas to New Jersey. DOJ stated in the letter
that its complaint will seek civil penalties and injunctive relief under federal
environmental laws.  DOJ offered to discuss settlement of the claim and
discussions  began in September  1999.  While no specific amount was proposed,
DOJ stated that any  settlement  must include an  appropriate  civil penalty for
the alleged violations.  Transco cannot reasonably estimate the amount of its
potential liability, if any, at this time.  However, Transco believes it has
substantially addressed environmental concerns on its system through ongoing
voluntary remediation and management programs.
<PAGE>

      Transco is subject to  extensive  federal,  state and local  environmental
laws  and  regulations  which  affect  Transco's   operations   related  to  the
construction and operation of its pipeline facilities.  Appropriate governmental
authorities may enforce these laws and  regulations  with a variety of civil and
criminal  enforcement  measures,  including monetary  penalties,  assessment and
remediation requirements and injunctions as to future compliance.  Transco's use
and  disposal of  hazardous  materials  are subject to the  requirements  of the
federal Toxic Substances Control Act (TSCA),  the federal Resource  Conservation
and  Recovery  Act (RCRA)  and  comparable  state  statutes.  The  Comprehensive
Environmental  Response,  Compensation and Liability Act (CERCLA), also known as
"Superfund,"  imposes liability,  without regard to fault or the legality of the
original  act,  for release of a  "hazardous  substance"  into the  environment.
Because these laws and regulations change from time to time, practices that have
been  acceptable  to the industry and to the  regulators  have to be changed and
assessment  and  monitoring  have to be  undertaken  to determine  whether those
practices  have damaged the  environment  and whether  remediation  is required.
Since 1989,  Transco has had studies  underway to test certain of its facilities
for the presence of toxic and hazardous  substances to determine to what extent,
if any,  remediation  may be  necessary.  On the basis of the  findings to date,
Transco estimates that environmental  assessment and remediation costs that will
be incurred  over the next five years under TSCA,  RCRA,  CERCLA and  comparable
state statutes will total approximately $25 million to $30 million,  measured on
an  undiscounted  basis.  This  estimate  depends  upon a number of  assumptions
concerning the scope of remediation  that will be required at certain  locations
and the cost of remedial  measures to be  undertaken.  Transco is  continuing to
conduct  environmental  assessments  and is  implementing  a variety of remedial
measures that may result in increases or decreases in the total estimated costs.
At December 31,  1999,  Transco had a reserve of  approximately  $25 million for
these  estimated  costs that has been recorded in current  liabilities and other
long-term liabilities in the accompanying Consolidated Balance Sheet.

      Transco considers environmental assessment and remediation costs and costs
associated  with  compliance  with  environmental  standards  to be  recoverable
through rates,  since they are prudent costs incurred in the ordinary  course of
business.  To date, Transco has been permitted  recovery of environmental  costs
incurred, and it is Transco's intent to continue seeking recovery of such costs,
as  incurred,  through  rate  filings.   Therefore,  these  estimated  costs  of
environmental assessment and remediation have been recorded as regulatory assets
in the accompanying Consolidated Balance Sheet.
<PAGE>

      Transco has used  lubricating  oils containing  polychlorinated  biphenyls
(PCBs) and,  although the use of such oils was  discontinued  in the 1970s,  has
discovered  residual PCB  contamination  in  equipment  and soils at certain gas
compressor   station   sites.   Transco  has  worked  closely  with  the  U.  S.
Environmental Protection Agency (EPA) and state regulatory authorities regarding
PCB issues, and has a program to assess and remediate such conditions where they
exist,  the costs of which are included in the $25 million to $30 million  range
discussed  above.  Civil  penalties  have been assessed by the EPA against other
major  pipeline  companies  for the alleged  improper  use and disposal of PCBs.
Transco  has  received  and  responded  to  information  requests  from the EPA.
Although penalties have not presently been asserted except as indicated above in
reference to the July,  1999 DOJ letter,  no assurance can be given that the EPA
will not seek such penalties in the future.

      Transco has been  identified as a potentially  responsible  party (PRP) at
various  Superfund and state waste disposal sites.  Based on present  volumetric
estimates  and  other  factors,   Transco's  estimated  aggregate  exposure  for
remediation  of these sites is less than  $500,000.  The  estimated  remediation
costs for all such sites have been included in Transco's  environmental  reserve
discussed above.  Liability under CERCLA (and applicable state law) can be joint
and  several  with other PRPs.  Although  volumetric  allocation  is a factor in
assessing  liability,  it is not necessarily  determinative;  thus, the ultimate
liability could be substantially greater than the amounts described above.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

      Since  Transco  meets  the  conditions  set forth in  General  Instruction
(I)(1)(a) and (b) of Form 10-K, this information is omitted.

                                     PART II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS.

      Transco is an indirect  wholly-owned  subsidiary  of Williams;  therefore,
Transco's common stock is not publicly traded.

ITEM 6. SELECTED FINANCIAL DATA.

      Since  Transco  meets  the  conditions  set forth in  General  Instruction
(I)(1)(a) and (b) of Form 10-K, this information is omitted.


<PAGE>



ITEM 7. MANAGEMENT'S  NARRATIVE  ANALYSIS OF THE RESULTS OF OPERATIONS.
        (THIS  DISCUSSION  SHOULD  BE READ  IN  CONJUNCTION  WITH  ITEM 8,
         FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.)

                              RESULTS OF OPERATIONS

1999 COMPARED TO 1998

      NET INCOME AND OPERATING  INCOME  Transco's net income for 1999 was $161.2
million  compared with net income of $135.7 million for 1998.  Operating  income
for 1999 was $297.2 million  compared to operating  income of $273.7 million for
1998.

      The higher  operating  income of $23.5 million was primarily the result of
higher  transportation  revenues,  partially offset by higher administrative and
general expense and depreciation and amortization  expense  discussed below. The
increase in net income was attributable to the increased  operating  income,  as
well as lower net interest expense,  due primarily to the adjustment to reserves
for rate  refunds  discussed  below  and  rate  refunds  made in 1998 and  1999,
partially  offset by lower allowance for funds used during  construction  due to
lower capital expenditures.

      TRANSPORTATION  REVENUES  Transco's  operating  revenues  related  to  its
transportation  services  increased  $42  million to $691  million for 1999 when
compared to 1998.  The higher  transportation  revenues  were  primarily  due to
positive  adjustments to the reserve for rate refunds in Transco's  general rate
case Docket No. RP95-197 ($28.1 million) and rate case Docket No. RP97-71 ($23.4
million),  benefits of  expansion  projects  placed into  service in 1998 ($14.2
million) and new services  begun in 1998 ($2.4  million).  These  increases were
partly offset by a decrease in commodity  revenues ($11.2 million) due primarily
to lower interruptible  transportation volumes and firm long-haul transportation
volumes, a lower level of reimbursable costs ($5.1 million) that are included in
operating expenses and recovered in Transco's rates, lower demand revenues ($5.2
million) and the  positive  impact of a $4 million  adjustment  recorded in 1998
related to  settlement  rates  contained  in the January  1998  stipulation  and
agreement in Transco's general rate case Docket No. RP97-71 approved by the FERC
in June 1998.

      During the first half of 1999, Transco engaged in an analysis of the court
appeal  related  to  Transco's  general  rate  case  Docket  No.  RP95-197  and,
particularly,   its  likely   results.   Based  on  developments  in  regulatory
proceedings  in the second  quarter of 1999  involving  Transco and others,  and
advice  received  from  counsel,  Transco  adjusted its reserve for rate refunds
($28.1  million of principal and $5.9 million of interest) in the second quarter
of 1999 to reflect the FERC's  revised rate of return  methodology as applied in
the July 29, 1998, and December 1, 1998 orders.

      In addition,  based on  developments in regulatory  proceedings  involving
Transco and others,  and advice received from counsel,  in the fourth quarter of
1999,  Transco  adjusted its Docket No. RP97-71  reserve for rate refunds ($23.4
million, of which $14.4 million was applicable to revenues collected in 1998 and
1997,  and $2.6  million  of  interest)  to  reflect  its  conclusion  that risk
associated  with one of the  issues  in this  proceeding  has  been  eliminated.
Transco is  continuing  to reserve  amounts to account for other issues that may
ultimately affect Transco's rate of return in this proceeding.
<PAGE>

      Transco's market-area  deliveries for 1999 increased 62.7 trillion British
Thermal Units (TBtu),  or 5%, when  compared to 1998.  The increased  deliveries
were  mainly due to higher  deliveries  under the Mobile Bay  Lateral  Expansion
Project and the Cherokee  Expansion  Project,  which were placed into service in
the latter part of 1998. Transco's production area deliveries for 1999 increased
8.0  Tbtu,  or  4%,  when  compared  to  1998  due  to  increased   liquifiables
transportation which resulted from higher prices paid for liquifiables in 1999.

      As a result of a straight  fixed-variable (SFV) rate design,  increases or
decreases  in firm  transportation  volumes  in  comparable  facilities  have no
significant  impact  on  operating  income;   however,   because   interruptible
transportation  rates  have  components  of fixed and  variable  cost  recovery,
increases or decreases in interruptible transportation volumes do have an impact
on operating income.

     SALES REVENUES Transco makes jurisdictional merchant gas sales to customers
pursuant to a blanket sales  certificate  issued by the FERC, with most of those
sales being made through a Firm Sales (FS)  program  which gives  customers  the
option to purchase  daily  quantities  of gas from Transco at  market-responsive
prices in exchange for a demand charge payment.

     Through an agency  agreement with Transco,  WESCO, an affiliate of Transco,
manages  Transco's  jurisdictional  merchant gas sales.  The long-term  purchase
agreements  managed by WESCO remain in Transco's  name, as do the  corresponding
sales of such purchased gas. Therefore,  Transco continues to record natural gas
sales revenues and the related accounts receivable and cost of natural gas sales
and the related accounts payable for the jurisdictional  merchant sales that are
managed by WESCO.  Through  the agency  agreement,  WESCO  receives  all margins
associated  with  jurisdictional  merchant gas sales  business and, as Transco's
agent,   assumes  all  market  and  credit  risk   associated   with   Transco's
jurisdictional  merchant gas sales.  Consequently,  Transco's merchant gas sales
service has no impact on Transco's operating income or results of operations.

     Transco's  operating  revenues  related  to its sales  services,  including
Transco's cash out sales in settlement of gas imbalances, increased $178 million
to $703 million for 1999,  when compared to 1998. The increase was primarily due
to higher cash out sales related to the settlement of  imbalances,  higher sales
volumes and a higher  average  sales price of $2.27 per Dt for 1999 versus $2.10
per Dt in 1998.

     STORAGE REVENUES  Transco's  operating revenues related to storage services
decreased  $6 million  to $137  million  for 1999 when  compared  to 1998.  This
revenue  decrease  included a $6.9  million  decrease  due to lower  underground
storage rates charged by others,  the majority of which is included in operation
and maintenance  expenses,  and a $0.8 million  decrease  primarily due to lower
storage demand charges, partly offset by the impact of a $1.5 million adjustment
recorded  in 1998 to the  revenue  refund  reserve to reflect  the actual  rates
contained in the RP97-71 Settlement Agreement.
<PAGE>

     OTHER REVENUES Other operating revenues increased $4 million to $12 million
for 1999 when compared to 1998,  primarily due to an increase of $2.3 million in
Parking and Borrowing Service revenues.

      OPERATING   COSTS   AND   EXPENSES   Excluding   the  cost  of  sales  and
transportation of $741 million and $568 million for 1999 and 1998, respectively,
Transco's  operating  expenses  were  approximately  $21 million  higher in 1999
compared  to  1998.   This  increase  was  primarily   attributable   to  higher
administrative  and general  expense and higher  depreciation  and  amortization
expense.   The  higher   administrative   and  general   expense  was  primarily
attributable  to higher  building  rent ($1.2  million),  pension  expense ($1.9
million),  group insurance  ($3.0 million) and labor ($3.3 million).  The higher
depreciation  and  amortization  expense  was due to a $3.8  million  adjustment
related  to the  RP97-71  settlement  rates  recorded  in 1998,  a $3.2  million
adjustment on computer  software recorded in 1998 and a $3.1 million increase in
1999,  primarily due to plant and property additions.  Operation and maintenance
expense  increased  only slightly in 1999 ($0.2  million)  over 1998,  primarily
attributable  to the  effects  of a $5.7  million  adjustment  recorded  in 1998
related to the RP97-71 settlement rates and higher  professional  services ($1.3
million),  mostly  offset by lower  underground  storage rates charged by others
($6.6 million).

1998 COMPARED TO 1997

      NET INCOME AND OPERATING  INCOME  Transco's net income for 1998 was $135.7
million  compared with net income of $111.4  million for 1997.  The 1997 results
include an after-tax  extraordinary  gain on  reacquired  debt of $2.9  million.
Excluding  this gain,  Transco's  net  income  for 1997  would have been  $108.5
million.  Operating  income for 1998 was $273.7  million  compared to  operating
income of $232.0 million for 1997.

      Excluding the  extraordinary  gain on reacquired debt for 1997, the higher
net income of $27.2  million and higher  operating  income of $41.7  million for
1998 were primarily due to benefits of expansion projects placed into service in
1998 and the fourth quarter of 1997, new services that began in the last half of
1997, the positive impact of an adjustment related to settlement rates contained
in the January 1998  Stipulation  and  Agreement in Transco's  general rate case
Docket  No.  RP97-71  approved  by the  FERC in June  1998 and  lower  operating
expenses,  partially offset by the effects of lower interruptible transportation
and  liquefiables  volumes and a $5.4 million  credit to the cost of natural gas
transportation  recorded in 1997 as a result of a settlement  related to a prior
rate proceeding.

      TRANSPORTATION  REVENUES  Transco's  operating  revenues  related  to  its
transportation  services  increased  $21 million to $649 million for 1998,  when
compared to 1997.  The higher  transportation  revenues  were  primarily  due to
benefits of the  expansion  projects  placed into service in 1998 and the fourth
quarter of 1997 ($26 million),  new services that began in the last half of 1997
($4  million)  and an  adjustment  related to the RP97-71  settlement  rates ($4
million), partly offset by the effects of lower interruptible transportation and
liquefiables volumes ($11 million).
<PAGE>

      Transco's  market-area  deliveries  for  1998  were  comparable  to  1997.
Transco's production-area  deliveries for 1998 decreased 28.0 TBtu, or 12%, when
compared to 1997, primarily as a result of milder weather conditions.

      SALES REVENUES Transco's operating revenues related to its sales services,
including cash out sales in settlement of gas imbalances, decreased $146 million
to $525 million for 1998,  when compared to 1997. The decrease was primarily due
to a lower  average gas sales price of $2.10 per Dt for 1998 versus $2.51 per Dt
in 1997 and lower sales volumes.

      STORAGE REVENUES Transco's  operating revenues related to storage services
increased  $2 million to $143  million for 1998,  when  compared  to 1997.  This
revenue  increase  included $5.8 million to recover higher  underground  storage
rates charged by others that is included in operation and  maintenance  expense,
partly  offset by a $1.5 million  adjustment  related to the RP97-71  settlement
rates and a $2.1 million decrease due primarily to lower storage withdrawals and
lower demand charges.

      OTHER REVENUES Other operating revenues increased $4 million to $8 million
for 1998 when compared to 1997,  due to new services that began in the last half
of 1997 and increased liquids transportation.

      OPERATING   COSTS   AND   EXPENSES   Excluding   the  cost  of  sales  and
transportation of $568 million and $706 million for 1998 and 1997, respectively,
Transco's  operating  expenses were $22 million lower in 1998 than in 1997.  The
decrease was  primarily due to lower  expenses for  operation  and  maintenance,
administrative  and general,  depreciation and amortization and taxes other than
income taxes.  The lower operation and maintenance  expense of $12.4 million was
primarily attributable to a $9.2 million decrease in charges from others for the
operation of certain  Transco  facilities,  including a $4.1 million  adjustment
related to the RP97-71  settlement  rates;  a $1.6  million  adjustment  in pipe
recoating costs,  also related to the RP97-71  settlement rates; and lower costs
of  contractual   services  ($3.6   million),   materials   ($3.9  million)  and
professional  services ($1.5 million);  partly offset by a $6.0 million increase
in underground  storage expense. As described above, the increase in underground
storage  expense  was  largely  offset by an  increase  in  underground  storage
revenues.  The lower  administrative  and  general  expense of $3.5  million was
primarily due to lower costs of group  insurance ($2.6 million) and the employee
retirement plan ($1.1 million).  The lower depreciation and amortization expense
of $6.5 million resulted from a $9.9 million decrease due to lower  depreciation
rates on offshore transmission  facilities,  including a $3.8 million adjustment
related to the RP97-71 settlement rates, and a $3.2 million decrease on computer
software,  partly  offset by a $6.6  million  increase due to plant and property
additions. The lower taxes other than income taxes of $2.4 million was primarily
due to lower payroll, sales and use taxes.
<PAGE>

RATE AND REGULATORY MATTERS

      See Note 3 of the Notes to Consolidated Financial Statements,  included in
Item 8 herein, for a discussion of Transco's rate and regulatory matters.

      GENERAL RATE CASE (DOCKET NO. RP97-71) On March 17, 2000, Transco received
a  favorable  order  from the FERC  related  to the rate of return  and  capital
structure issues in Docket No. RP97-71.  Transco is evaluating the effect of the
order.  Preliminary  indications are that Transco's reserve for rate refunds may
be considerably reduced in 2000.

EFFECT OF INFLATION

      Transco  generally has  experienced  increased  costs due to the effect of
inflation on the cost of labor, materials and supplies, and property,  plant and
equipment.  A portion of the increased labor and materials and supplies cost can
directly affect income through  increased  maintenance and operating  costs. The
cumulative  impact of inflation over a number of years has resulted in increased
costs  for  current  replacement  of  productive  facilities.  The  majority  of
Transco's  property,  plant and equipment and inventory is subject to ratemaking
treatment,  and under current FERC practices,  recovery is limited to historical
costs.  While amounts in excess of  historical  cost are not  recoverable  under
current FERC practices,  Transco believes it will be allowed to recover and earn
a return based on increased  actual cost incurred when existing  facilities  are
replaced.  Cost based regulation along with competition and other market factors
limit  Transco's  ability to price services or products  based upon  inflation's
effect on costs.

                         CAPITAL RESOURCES AND LIQUIDITY

METHOD OF FINANCING

      Transco  funds its  capital  requirements  with cash flows from  operating
activities,  including  the  sale of trade  receivables,  by  accessing  capital
markets, by repayments of funds advanced to Williams, by borrowings under a bank
credit  agreement  and  short-term  money  market  facilities  and, if required,
advances from Williams.

      In 1997,  Transco  filed a  registration  statement  with  Securities  and
Exchange  Commission  and, at December 31,  1999,  the amount of $200 million of
shelf availability  remains under this registration  statement which may be used
to issue debt  securities.  Interest  rates and market  conditions  will  affect
amounts  borrowed,  if  any,  under  this  arrangement.   Transco  believes  any
additional financing  arrangements,  if required,  can be obtained on reasonable
terms.

      Williams and certain of its subsidiaries,  including Transco,  are parties
to a $1 billion credit  agreement  (Credit  Agreement),  under which Transco can
borrow up to $400 million if the funds available under the Credit Agreement have
not been  borrowed by  Williams or other  subsidiaries.  At December  31,  1999,
Transco had no  outstanding  borrowings  under the Credit  Agreement.  Transco's
short-term  money market facility expired in 1999. As a participant in Williams'
cash  management  program,  Transco and its  subsidiaries  have made advances to
Williams. At December 31, 1999, net advances due Transco and its subsidiaries by
Williams totaled $482 million.  Additionally,  Transco has made advances to WGP.
At December 31, 1999,  the advances due Transco by WGP totaled $13.7 million and
were  classified  as  long-term  advances  to  affiliates  in  the  accompanying
Consolidated Balance Sheet.
<PAGE>

CAPITAL EXPENDITURES

      As shown in the  table  below,  Transco's  capital  expenditures  for 1999
included $43 million for market-area projects,  primarily for the MarketLink and
SouthCoast  Projects,  $4 million for supply-area  projects and $140 million for
maintenance  of existing  facilities  and other  projects.  Transco has budgeted
approximately $445 million in the year 2000 for capital  expenditures related to
expansion   projects  in  the  market  area  and  the  maintenance  of  existing
facilities.
<TABLE>
<CAPTION>

                                           Budget                              Actual
                                        --------------    --------------------------------------------------
Capital Expenditures                        2000              1999              1998              1997
- --------------------------              --------------    --------------    --------------    --------------
                                                                   (In millions)
<S>                                       <C>                <C>               <C>               <C>
Market-Area Projects ............         $   227.0          $   43.0          $  78.2           $   91.8
Supply-Area Projects ............               1.5               3.7            127.6               47.7
Maintenance of Existing Facilities
  and Other Projects ............             216.8             138.7             97.9              103.3
                                        --------------    --------------    --------------    --------------

      Total Capital Expenditures          $   445.3          $  185.4          $ 303.7           $  242.8
                                        ==============    ==============    ==============    ==============
</TABLE>


OTHER CAPITAL REQUIREMENTS AND CONTINGENCIES

      ORDER  636  TRANSITION  COSTS  Transco   implemented  Order  636  services
effective  November  1,  1993.  Transco  does not  expect  to incur  Gas  Supply
Realignment  (GSR)  costs  associated  with its firm  sales  service.  Transco's
non-GSR transition costs are anticipated to be insignificant. Order 636 provides
that  pipelines  should be allowed  the  opportunity  to recover  all  prudently
incurred  transition  costs.  Transco does not believe that Order 636 transition
costs to be  incurred  by  Transco  will have a material  adverse  effect on its
financial position or results of operations.

      RATE  AND  REGULATORY  REFUNDS  As  discussed  in Note 3 of the  Notes  to
Consolidated  Financial Statements included in Item 8 herein,  Transco has filed
general  rate cases  (Docket Nos.  RP95-197 and RP97-71)  under which all issues
have not been  resolved.  Transco has  provided  reserves  which it believes are
adequate  for any refunds  that may be  required  under  Docket No.  RP97-71 and
believes no refunds will be required under Docket No. RP95-197.
<PAGE>

      REGULATORY  AND LEGAL  PROCEEDINGS  As discussed in Note 3 of the Notes to
Consolidated Financial Statements included in Item 8 herein, Transco is involved
in several pending regulatory and legal proceedings. Because of the complexities
of the issues involved in these  proceedings,  Transco cannot predict the actual
timing of resolution or the ultimate  amounts which might have to be refunded or
paid in connection  with the  resolution of these pending  regulatory  and legal
proceedings.

      ENVIRONMENTAL  MATTERS As discussed in Note 3 of the Notes to Consolidated
Financial Statements included in Item 8 herein,  Transco is subject to extensive
federal,  state  and  local  environmental  laws and  regulations  which  affect
Transco's  operations  related to the construction and operation of its pipeline
facilities.

      Transco considers environmental assessment and remediation costs and costs
associated  with  compliance  with  environmental  standards  to be  recoverable
through  rates,  as they are prudent  costs  incurred in the ordinary  course of
business.  To date, Transco has been permitted  recovery of environmental  costs
incurred, and it is Transco's intent to continue seeking recovery of such costs,
as incurred, through rate filings.

      LONG-TERM  GAS  PURCHASE  CONTRACTS  Transco has  long-term  gas  purchase
contracts  containing  either  fixed  prices or  variable  prices  that are at a
significant  premium to the  estimated  market price.  However,  due to contract
expirations and estimated deliverability declines,  Transco's estimated purchase
commitments  under such gas  purchase  contracts  are not  material to Transco's
total gas purchases.

      YEAR 2000 COMPLIANCE  Transco  encountered only minor problems  associated
with the date change from 1999 to 2000, and experienced no business disruptions.
The total cost  incurred by Transco to prepare for the year 2000 date change was
$6.7 million. Transco believes that limited and insignificant continued exposure
to year 2000 complications remains.

      Williams  and  its  wholly-owned  subsidiaries,  which  includes  Transco,
initiated  its  enterprise-wide  project  in  1997  to  address  the  year  2000
compliance  issue  for  both  traditional   information   technology  areas  and
non-traditional   areas,   including  embedded  technology  which  is  prevalent
throughout  the  company.  The project  focused on all  technology  hardware and
software,  external interfaces with customers and suppliers,  operations process
control,  automation and instrumentation systems, and facility items. The phases
of  the  project  were  awareness,  inventory  and  assessment,  renovation  and
replacement,  testing  and  validation,  and  contingency  planning.  During the
inventory and assessment phase, all systems with possible year 2000 implications
were  inventoried  and classified  into five  categories:  1) highest,  business
critical,  2) high, compliance necessary within a short period of time following
January 1, 2000, 3) medium,  compliance necessary within 30 days from January 1,
2000,  4) low,  compliance  desirable  but  not  required,  and 5)  unnecessary.
Categories 1 through 3 were  designated  as critical and were the major focus of
this  project.  Transco  initiated a formal  communications  process  with other
companies  in 1998 to  determine  the  extent  to  which  those  companies  were
addressing year 2000 compliance.  Transco also worked directly with key business
partners  to  reduce  the  risk  of a  break  in  service  or  supply  and  with
noncompliant  companies  to mitigate  any  material  adverse  effect on Transco.
Significant focus on the contingency planning phase of the project took place in
1999. Contingency plans were developed for critical business processes, critical
business partners, suppliers and system replacements that experience significant
delays.
<PAGE>

      Renovation/replacement  and  testing/validation  of  critical  systems was
completed by December  31,  1999.  Over the December 31, 1999 to January 4, 2000
period,  an extensive system monitoring plan was in place with regular reporting
of results.

      Transco  utilized both internal  resources  (consisting of a core group of
121 people) and external  contractors (at a cost of approximately  $5.0 million)
to complete the year 2000  compliance  project.  Costs incurred for new software
and  hardware  purchases  were  capitalized  and other  costs were  expensed  as
incurred.  The $6.7  million  total cost  incurred  by  Transco,  including  any
accelerated system replacements, was spent as follows:

       Prior to 1998 and during the first quarter of 1998, Transco conducted the
      project  awareness  and  inventory/assessment  phases of the  project  and
      incurred minimal costs.

       During  the  second  quarter  of  1998,  $0.1  million  was  spent on the
      renovation/replacement and testing/validation phases and completion of the
      inventory/assessment phase.

       The   third   and   fourth    quarters    of   1998    focused   on   the
      renovation/replacement and testing/validation phases, and $1.8 million was
      incurred.

       During   the   first   quarter   of  1999,   renovation/replacement   and
      testing/validation continued, contingency planning began, and $1.8 million
      was incurred.

       During  the  second  quarter  of  1999,  the  primary  focus  shifted  to
      testing/validation and contingency planning, and $1.2 million was spent.

       The  primary  focus  during  the third  quarter  of 1999 was  contingency
      planning and final testing, and $1.6 million was incurred.

       The fourth  quarter of 1999 focused  mainly on  contingency  planning and
      final testing, and $0.2 million was spent.

       The amount  estimated  to be spent  during the first two quarters of 2000
      for monitoring and problem resolution is considered minimal.
<PAGE>

      Virtually all of the $6.7 million  incurred to date has been expensed with
a minimal  amount  capitalized.  Any future  costs for  monitoring  and  problem
resolution will be expensed.  This estimate does not include Transco's potential
share of year 2000 costs that were incurred by  partnerships  and joint ventures
in  which  the  company  participates  but is not the  operator.  The  costs  of
previously planned system  replacements are not considered to be year 2000 costs
and are, therefore, excluded from the amounts discussed above.

      The preceding discussion contains  forward-looking  statements  including,
without  limitation,   statements   relating  to  the  company's   expectations,
intentions,  and adequate resources, that are made pursuant to the "safe harbor"
provisions of the Private Securities  Litigation Reform Act of 1995. Readers are
cautioned that such forward-looking statements contained in the year 2000 update
are  based  on  certain   assumptions   which  may  vary  from  actual  results.
Specifically,  management's  expectations  about the final impact on the company
and estimates of the total cost to the company of the year 2000 compliance issue
are based  upon the  assumptions  that there  will not be a  significant  future
impact from,  for example,  problems  caused by customers or suppliers that have
not yet been fully recognized,  or problems with billing,  payroll, or financial
closing at the quarters or year end.  However,  there can be no  guarantee  that
these assumptions are correct.

CONCLUSION

      Although no assurances can be given,  Transco currently  believes that the
aggregate of cash flows from operating activities, supplemented, when necessary,
by repayments of funds advanced to Williams,  advances or capital  contributions
from Williams and borrowings  under the Credit  Agreement  will provide  Transco
with  sufficient  liquidity to meet its capital  requirements.  When  necessary,
Transco also expects to access public and private markets on reasonable terms to
finance its capital requirements.


<PAGE>


ITEM 7A.  QUALITATIVE AND QUANTITATIVE DISCLOSURES ABOUT MARKET RISK

        Transco's  interest rate risk exposure  results,  in part, from its debt
portfolio which is influenced by short-term  rates,  primarily  London Interbank
Offered Rate (LIBOR) -based borrowings from commercial banks, and long-term U.S.
Treasury  rates.  To mitigate the impact of  fluctuations in its interest rates,
Transco  maintains a  significant  portion of its debt  portfolio  in fixed rate
debt.

        In addition,  Transco's  interest rate risk exposure results from demand
notes between Transco and WGP which were first issued in 1999. Transco currently
does not expect to receive  payment  for the  principal  of these notes prior to
their termination in 2009. The interest rate on the demand notes is LIBOR plus a
fixed rate of 0.275%  per annum for  January  1, 1999 to  January  31,  1999 and
0.6875% per annum for February 1, 1999 to termination of the notes.

        The following tables provide  information about Transco's long-term debt
as of December 31, 1999 and 1998,  and  long-term  advances to  affiliates as of
December 31, 1999,  both of which are subject to interest rate risk.  The tables
present  principal  cash flows and  weighted-average  interest rates by expected
maturity dates.
<TABLE>
<CAPTION>
December 31, 1999                                              Expected Maturity Date
- ----------------------                      --------------------------------------------------------------
                                               2000             2001            2002             2003
                                            ------------     ------------    ------------     ------------
                                                                (Dollars in millions)
<S>                                         <C>              <C>             <C>              <C>
Long-term debt:
    Fixed rate........................      $       -        $       200     $     125        $         -
      Interest rate...................          7.23%              7.25%         7.21%              6.77%
    Variable rate.....................      $       -        $         -     $     150        $         -
      Interest rate (5.30% for 1999)
Long-term advances to affiliates:
    Variable rate.....................      $       -        $         -     $       -        $         -
      Interest rate (5.90% for 1999)..
</TABLE>

<TABLE>
<CAPTION>
December 31, 1999                                              Expected Maturity Date
- ----------------------                      --------------------------------------------------------------
                                               2004          Thereafter         Total         Fair Value
                                            ------------     ------------    ------------     ------------
                                                                (Dollars in millions)
<S>                                         <C>              <C>             <C>              <C>
Long-term debt:
    Fixed rate........................      $       -        $     500       $     825        $     783
      Interest rate...................          6.76%            7.21%
    Variable rate.....................      $       -        $       -       $     150        $     150
      Interest rate (5.30% for 1999)
Long-term advances to affiliates:
    Variable rate.....................      $       -        $  13,689       $  13,689        $  13,689
      Interest rate (5.90% for 1999)..
</TABLE>



<PAGE>


<TABLE>
<CAPTION>
December 31, 1998                                              Expected Maturity Date
- ----------------------                      --------------------------------------------------------------
                                               1999             2000            2001             2002
                                            ------------     ------------    ------------     ------------
                                                                (Dollars in millions)
<S>                                         <C>              <C>             <C>              <C>
Long-term debt:
    Fixed rate........................      $       -        $       -       $     200        $     125
      Interest rate...................          7.23%            7.23%           7.25%            7.21%
    Variable rate.....................      $       -        $       -       $       -        $     150
      Interest rate (5.65% for 1998)
</TABLE>

<TABLE>
<CAPTION>
December 31, 1998                                              Expected Maturity Date
- ----------------------                      --------------------------------------------------------------
                                               2003          Thereafter         Total         Fair Value
                                            ------------     ------------    ------------     ------------
                                                                (Dollars in millions)
<S>                                         <C>              <C>             <C>              <C>
Long-term debt:
    Fixed rate........................      $       -        $     500       $     825        $     841
      Interest rate...................          6.77%            7.17%
    Variable rate.....................      $       -        $       -       $     150        $     150
      Interest rate (5.65% for 1998)
</TABLE>



<PAGE>


ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

                                                               Page
                                                         -----------------

Report of Independent Auditors      ....................        28

Consolidated Balance Sheet          ....................       29-30

Consolidated Statement of Income    ....................        31

Consolidated Statement of Common Stockholder's Equity...        32

Consolidated Statement of Cash Flows ...................       33-34

Notes to Consolidated Financial Statements..............       35-59






<PAGE>


                         REPORT OF INDEPENDENT AUDITORS


Transcontinental Gas Pipe Line Corporation
The Board of Directors

      We  have  audited  the   accompanying   consolidated   balance   sheet  of
Transcontinental Gas Pipe Line Corporation as of December 31, 1999 and 1998, and
the related consolidated  statements of income, common stockholder's equity, and
cash flows for each of the three years in the period  ended  December  31, 1999.
These financial  statements are the responsibility of the Company's  management.
Our responsibility is to express an opinion on these financial  statements based
on our audits.

      We conducted our audits in accordance  with auditing  standards  generally
accepted in the United States.  Those standards require that we plan and perform
the audit to obtain reasonable  assurance about whether the financial statements
are free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements.  An
audit also includes  assessing the accounting  principles  used and  significant
estimates  made by  management,  as well as  evaluating  the  overall  financial
statement  presentation.  We believe that our audits provide a reasonable  basis
for our opinion.

      In our opinion, the financial statements referred to above present fairly,
in   all   material   respects,   the   consolidated   financial   position   of
Transcontinental  Gas Pipe Line  Corporation  at December 31, 1999 and 1998, and
the  consolidated  results of its  operations and its cash flows for each of the
three years in the period ended December 31, 1999, in conformity with accounting
principles generally accepted in the United States.


                                                       ERNST & YOUNG LLP


Tulsa, Oklahoma
February 17, 2000


<PAGE>


                   TRANSCONTINENTAL GAS PIPE LINE CORPORATION

                           CONSOLIDATED BALANCE SHEET
                              THOUSANDS OF DOLLARS
<TABLE>
<CAPTION>
                                                                                            December 31,
                                                                                --------------------------------------
                                                                                      1999                 1998
                                                                                -----------------    -----------------

       ASSETS
<S>                                                                               <C>                  <C>
Current Assets:
    Cash  .................................................................       $       843          $     1,470
    Receivables:
       Trade (Notes 4 and 7) ..............................................            31,843               13,889
       Affiliates .........................................................            14,761               10,892
       Advances to affiliates .............................................           481,707              416,164
       State income taxes .................................................             2,811                2,725
       Other ..............................................................            11,740                5,075
    Transportation and exchange gas receivables:
       Affiliates..........................................................               354                1,370
       Others..............................................................            45,611               56,475
    Inventories:
       Gas in storage, at LIFO ............................................            41,599               35,720
       Materials and supplies, at lower of average cost or market .........            30,989               30,172
       Gas available for customer nomination ..............................             4,612               13,895
    Deferred income taxes (Note 6) ........................................            68,081               99,598
    Other .................................................................            17,071               16,714
                                                                                -----------------    -----------------
       Total current assets ...............................................           752,022              704,159
                                                                                -----------------    -----------------

Long-term advances to affiliates...........................................            13,689                    -
                                                                                -----------------    -----------------

Investments, at cost plus equity in undistributed earnings ................            58,093                8,915
                                                                                -----------------    -----------------

Property, Plant and Equipment:
    Natural gas transmission plant ........................................         4,452,101            4,259,502
    Less - Accumulated depreciation and amortization ......................           791,061              616,120
                                                                                -----------------    -----------------
       Total property, plant and equipment, net ...........................         3,661,040            3,643,382
                                                                                -----------------    -----------------

Other Assets ..............................................................           174,336              175,501
                                                                                -----------------    -----------------

                                                                                  $ 4,659,180          $ 4,531,957
                                                                                =================    =================



The  accompanying  notes are an  integral  part of these  consolidated financial statements.
</TABLE>
<PAGE>


                   TRANSCONTINENTAL GAS PIPE LINE CORPORATION

                           CONSOLIDATED BALANCE SHEET
                              THOUSANDS OF DOLLARS
<TABLE>
<CAPTION>
                                                                                            December 31,
                                                                                --------------------------------------
                                                                                      1999                 1998
                                                                                -----------------    -----------------

       LIABILITIES AND STOCKHOLDER'S EQUITY
<S>                                                                               <C>                  <C>
Current Liabilities:
    Payables:
       Trade ..............................................................       $    87,580          $    51,147
       Affiliates .........................................................            53,440               25,050
       Other ..............................................................            14,954               21,138
    Transportation and exchange gas payable:
       Affiliates .........................................................               868                  379
       Others .............................................................             7,569                8,354
    Accrued liabilities:
       Federal income taxes payable to affiliate ..........................            21,866               26,076
       Other taxes ........................................................            12,967               16,467
       Interest ...........................................................            21,191               20,885
       Employee benefits ..................................................            56,494               51,616
       Other ..............................................................            20,658               41,587
    Reserve for rate refunds ..............................................           159,632              238,403
                                                                                -----------------    -----------------
       Total current liabilities ..........................................           457,219              501,102
                                                                                -----------------    -----------------

Long-Term Debt (Note 4) ...................................................           975,330              975,768
                                                                                -----------------    -----------------

Other Long-Term Liabilities:
    Deferred income taxes (Note 6).........................................           879,506              846,306
    Other .................................................................           123,897              146,740
                                                                                -----------------    -----------------
       Total other long-term liabilities ..................................         1,003,403              993,046
                                                                                -----------------    -----------------

Commitments and contingencies (Note 3) ....................................

Cumulative Redeemable Preferred Stock, without par value:
    Authorized 10,000,000 shares: none issued or outstanding ..............                 -                    -
                                                                                -----------------    -----------------
Cumulative Redeemable Second Preferred Stock, without par value:
    Authorized 2,000,000 shares: none issued or outstanding ...............                 -                    -
                                                                                -----------------    -----------------

Common Stockholder's Equity:
    Common Stock $1.00 par value:
       100 shares authorized, issued and outstanding ......................                 -                    -
    Premium on capital stock and other paid-in capital ....................         1,652,430            1,652,430
    Retained earnings .....................................................           570,798              409,611
                                                                                -----------------    -----------------
       Total common stockholder's equity ..................................         2,223,228            2,062,041
                                                                                -----------------    -----------------
                                                                                  $ 4,659,180          $ 4,531,957
                                                                                =================    =================


The   accompanying   notes  are  an  integral  part  of  these consolidated financial statements.
</TABLE>



<PAGE>



                   TRANSCONTINENTAL GAS PIPE LINE CORPORATION

                        CONSOLIDATED STATEMENT OF INCOME
                              THOUSANDS OF DOLLARS
<TABLE>
<CAPTION>

                                                                              Years Ended December 31
                                                             ----------------------------------------------------------
                                                                  1999                 1998                 1997
                                                             ----------------     ----------------    -----------------

<S>                                                            <C>                  <C>                 <C>
Operating Revenues:
    Natural gas sales..................................        $   703,028          $   524,822         $   670,879
    Natural gas transportation.........................            691,101              648,508             627,301
    Natural gas storage................................            137,050              143,275             141,108
    Other .............................................             12,277                8,531               4,011
                                                             ----------------     ----------------    -----------------
       Total operating revenues........................          1,543,456            1,325,136           1,443,299
                                                             ----------------     ----------------    -----------------

Operating Costs and Expenses
    Cost of natural gas sales..........................            702,884              524,822             670,879
    Cost of natural gas transportation.................             38,400               42,765              34,718
    Operation and maintenance..........................            172,912              172,769             185,175
    Administrative and general.........................            130,027              120,632             124,145
    Depreciation and amortization (Note 2).............            161,480              151,387             157,883
    Taxes - other than income taxes....................             34,927               34,392              36,745
    Other .............................................              5,601                4,632               1,787
                                                             ----------------    -----------------    ----------------
       Total operating costs and expenses..............          1,246,231            1,051,399           1,211,332
                                                             ----------------     ----------------    -----------------

Operating Income.......................................            297,225              273,737             231,967
                                                             ----------------     ----------------    -----------------

Other (Income) and Other Deductions:
    Interest expense-   affiliates.....................                243                   45                   2
                    -   other..........................             70,315               91,610              71,637
    Interest income -   affiliates.....................            (25,770)             (27,290)             (9,213)
                    -   other..........................                 (5)                 (92)                (50)
    Allowance for equity and borrowed funds used
      during construction (AFUDC)......................             (5,542)              (9,792)             (7,771)
    Equity in earnings of unconsolidated affiliates....             (3,214)                (239)               (504)
    Miscellaneous other deductions, net................              1,091                4,520               2,744
                                                             ----------------    -----------------    -----------------
       Total other (income) and other deductions.......             37,118               58,762              56,845
                                                             ----------------     ----------------    -----------------

    Income before Income Taxes and
      Extraordinary Item...............................            260,107              214,975             175,122
    Provision for Income Taxes (Note 6)................             98,920               79,281              66,594
                                                             ----------------     ----------------    -----------------
    Income before Extraordinary Item...................            161,187              135,694             108,528
    Extraordinary Item - Net Gain on Reacquired Debt ..                  -                    -               2,860
                                                             ----------------     ----------------    -----------------

    Net Income.........................................        $   161,187          $   135,694         $   111,388
                                                             ================     ================    =================


The  accompanying  notes  are an  integral  part of  these consolidated financial statements.
</TABLE>
<PAGE>


                   TRANSCONTINENTAL GAS PIPE LINE CORPORATION

              CONSOLIDATED STATEMENT OF COMMON STOCKHOLDER'S EQUITY
                              THOUSANDS OF DOLLARS

<TABLE>
<CAPTION>
                                                                             Years Ended December 31,
                                                             ----------------------------------------------------------
                                                                  1999                 1998                 1997
                                                             ----------------     ----------------    -----------------


<S>                                                            <C>                  <C>                 <C>
Common Stock:
    Balance at beginning and end of period.............        $         -          $         -         $         -
                                                             ----------------     ----------------    -----------------

Premium on Capital Stock and Other Paid-in Capital:
    Balance at beginning and end of period.............          1,652,430            1,652,430           1,652,430
                                                             ----------------     ----------------    -----------------

Retained Earnings:
    Balance at beginning of period.....................            409,611              273,917             166,784
    Add (deduct):
       Net income......................................            161,187              135,694             111,388
       Cash dividends on common stock..................                  -                    -              (4,255)
       Non-cash dividends on common stock..............                  -                    -                   -
                                                             ----------------     ----------------    -----------------

    Balance at end of period...........................            570,798              409,611             273,917
                                                             ----------------     ----------------    -----------------

    Total Common Stockholder's Equity..................        $ 2,223,228          $ 2,062,041         $ 1,926,347
                                                             ================     ================    =================



The  accompanying  notes  are an  integral  part of  these consolidated financial statements.
</TABLE>
<PAGE>





                   TRANSCONTINENTAL GAS PIPE LINE CORPORATION

                      CONSOLIDATED STATEMENT OF CASH FLOWS
                              THOUSANDS OF DOLLARS
<TABLE>
<CAPTION>

                                                                             Years Ended December 31,
                                                             ----------------------------------------------------------
                                                                  1999                 1998                 1997
                                                             ----------------     ----------------    -----------------

<S>                                                            <C>                  <C>                 <C>
Cash flows from operating activities:
    Net income.............................................    $   161,187          $   135,694         $   111,388
    Adjustments to reconcile net income to net cash
      provided by operating activities:
       Extraordinary item - net gain on reacquired debt....              -                    -              (2,860)
       Depreciation and amortization (Note 2)..............        166,368              157,942             164,224
       Deferred income taxes (Note 6)......................         64,717               (5,729)             (7,029)
       Allowance for equity funds used during construction
         (Equity AFUDC)....................................         (3,853)              (7,169)             (5,377)
       Changes in operating assets and liabilities:
          Receivables......................................        (32,328)               7,634              27,487
          Receivables sold.................................          4,900              (13,000)                  -
          Transportation and exchange gas receivable.......         11,880               32,547               4,619
          Inventories......................................          2,587                4,453             (14,779)
          Payables.........................................         57,658              (35,270)            (18,481)
          Transportation and exchange gas payable..........           (296)              (9,674)             (8,833)
          Accrued liabilities..............................        (21,707)              26,363              28,047
          Reserve for rate refunds.........................        (78,771)              33,849              31,731
          Other, net.......................................        (28,581)             (30,594)              5,657
                                                             ----------------     ----------------    -----------------
             Net cash provided by operating activities.....        303,761              297,046             315,794
                                                             ----------------     ----------------    -----------------

Cash flows from financing activities: (Note 4)
    Additions to long-term debt............................              -              298,343             310,000
    Retirement of long-term debt...........................              -             (160,000)           (249,000)
    Debt issue costs.......................................              -               (2,060)               (253)
    Dividends on common stock..............................              -                    -              (4,255)
                                                             ----------------     ----------------    -----------------
             Net cash provided by financing activities.....              -              136,283              56,492
                                                             ----------------     ----------------    -----------------
</TABLE>
<PAGE>


                   TRANSCONTINENTAL GAS PIPE LINE CORPORATION

                      CONSOLIDATED STATEMENT OF CASH FLOWS
                              THOUSANDS OF DOLLARS
<TABLE>
<CAPTION>

                                                                             Years Ended December 31,
                                                             ----------------------------------------------------------
                                                                  1999                 1998                 1997
                                                             ----------------     ----------------    -----------------

<S>                                                            <C>                  <C>                 <C>
Cash flows from investing activities:
    Property, plant and equipment:
       Additions, net of equity AFUDC......................       (186,297)            (301,078)           (242,202)
       Changes in accounts payable.........................            958               (2,629)               (594)
    Sale of assets.........................................          2,503                    -                   -
    Advances to affiliates, net............................        (79,232)            (134,710)           (132,958)
    Investments in affiliates, net.........................        (45,940)              (1,954)               (703)
    Other, net.............................................          3,620                7,191               3,718
                                                             ----------------     ----------------    -----------------
             Net cash used in investing activities.........       (304,388)            (433,180)           (372,739)
                                                             ----------------     ----------------    -----------------

    Net increase (decrease) in cash........................           (627)                 149                (453)
    Cash at beginning of period............................          1,470                1,321               1,774
                                                             ================     ================    =================
    Cash at end of period..................................    $       843          $     1,470         $     1,321
                                                             ================     ================    =================

    Supplemental disclosures of cash flow information:
       Cash paid during the year for:
          Interest (exclusive of amount capitalized).......    $    83,539          $    62,287         $    69,657
          Income taxes paid................................         41,893               86,862              57,958
          Income tax refunds received......................         (1,486)                 (77)            (11,821)



The  accompanying  notes  are an  integral  part  of  these  consolidated  financial statements.
</TABLE>
<PAGE>


                   TRANSCONTINENTAL GAS PIPE LINE CORPORATION

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



1. Corporate Structure and Control...................................    35
2. Summary of Significant Accounting Policies........................    35
3. Contingent Liabilities and Commitments............................    39
4. Debt, Financing Arrangements and Leases...........................    50
5. Employee Benefit Plans............................................    52
6. Income Taxes......................................................    55
7. Financial Instruments.............................................    56
8. Transactions with Major Customers and Affiliates..................    57
9. Quarterly Information (Unaudited).................................    58


                       1. CORPORATE STRUCTURE AND CONTROL

      Transcontinental Gas Pipe Line Corporation (Transco) is a wholly-owned
subsidiary of Williams Gas Pipeline  Company (WGP).  WGP is a wholly-owned
subsidiary of The Williams  Companies,  Inc.  (Williams).  Prior to May 1, 1997,
Transco was a wholly-owned subsidiary of Williams.

                  2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

      NATURE OF  OPERATIONS  Transco is an interstate  natural gas  transmission
company  which  owns  a  natural  gas  pipeline  system  extending  from  Texas,
Louisiana,  Mississippi  and the Gulf of Mexico  through  the states of Alabama,
Georgia, South Carolina, North Carolina,  Virginia,  Maryland,  Pennsylvania and
New Jersey to the New York City  metropolitan  area. The system serves customers
in Texas and the eleven southeast and Atlantic  seaboard states mentioned above,
including major  metropolitan  areas in Georgia,  North Carolina,  New York, New
Jersey and Pennsylvania. Transco also holds a minority interest in an intrastate
natural gas pipeline in North Carolina.

      BASIS OF PRESENTATION  The acquisition of Transco Energy Company (TEC) and
its subsidiaries, including Transco, by Williams in 1995 was accounted for using
the purchase  method of accounting.  Accordingly,  an allocation of the purchase
price was  assigned  to the assets  and  liabilities  of Transco  based on their
estimated  fair  values.  The purchase  price  allocation  to Transco  primarily
consisted of a $1.5 billion allocation to property,  plant and equipment,  which
is being amortized on a straight-line  basis,  and adjustments to deferred taxes
based  upon  the book  basis  of the net  assets  recorded  as a  result  of the
acquisition. Current Federal Energy Regulatory Commission (FERC) policy does not
permit Transco to recover through rates amounts in excess of original cost.
<PAGE>

      As a participant in Williams'  cash  management  program,  Transco and its
subsidiaries have advances to and from Williams.  These advances are represented
by demand notes.  Transco currently expects to receive payment of these advances
within the next twelve  months and has recorded  such advances as current in the
accompanying  Consolidated Balance Sheet. Transco has also made advances to WGP.
Transco  currently does not expect to receive  payment of these advances  within
the next twelve months and has recorded  such advances as long-term  advances to
affiliates in the accompanying  Consolidated Balance Sheet. The interest rate on
intercompany  demand  notes is the  London  Interbank  Offered  Rate plus a rate
ranging from 0.275% to 0.750% per annum.

      Through an agency agreement with Transco, Williams Energy Services Company
(WESCO), an affiliate of Transco,  manages Transco's jurisdictional merchant gas
sales. The long-term  purchase  agreements  managed by WESCO remain in Transco's
name, as do the corresponding  sales of such purchased gas.  Therefore,  Transco
continues  to  record  natural  gas  sales  revenues  and the  related  accounts
receivable  and cost of natural gas sales and the related  accounts  payable for
the jurisdictional  merchant sales that are managed by WESCO. Through the agency
agreement,  WESCO receives all margins associated with  jurisdictional  merchant
gas sales business and, as Transco's  agent,  assumes all market and credit risk
associated  with  Transco's  jurisdictional  merchant  gas sales.  Consequently,
Transco's  merchant gas sales service has no impact on its  operating  income or
results of operations.

      PRINCIPLES OF CONSOLIDATION The consolidated  financial statements include
the accounts of Transco and its majority-owned subsidiaries.  Companies in which
Transco and its  subsidiaries  own 20 percent to 50 percent of the voting common
stock are accounted for under the equity method.

      PROPERTY, PLANT AND EQUIPMENT Property, plant and equipment is recorded at
cost,  adjusted  in 1995 to reflect  the  allocation  of the  purchase  price as
discussed  above.  Gains or  losses  from the  ordinary  sale or  retirement  of
property,   plant  and  equipment   are  credited  or  charged  to   accumulated
depreciation; other gains or losses are recorded in net income.

      Depreciation  rates  used for  major  regulated  gas plant  facilities  at
December 31, 1999, 1998, and 1997 were:

Category of Property                1999              1998            1997
- -------------------------        -----------     ------------     -----------

Gathering facilities             2.60%-3.80%      2.60%-3.80%      2.60-3.80%
Storage facilities                  2.50%            2.50%            2.50%
Onshore transmission facilities     2.35%            2.35%            2.35%
Offshore transmission facilities    1.50%            1.50%            2.25%

      Depreciation   of  general   plant  is   provided  on  a  group  basis  at
straight-line rates.

      Under the terms of a settlement  in Transco's  general rate case in Docket
No.  RP97-71,  which was  effective  May 1, 1997,  Transco  agreed to reduce the
depreciation  rate for offshore  transmission  facilities.  The reduction in the
depreciation  rate had no effect on operating or net income due to an offsetting
reduction  in  operating  revenues,  but did  result in lower  cash  flows  from
operations.  The reduction in the rate was recorded in 1998,  retroactive to May
1, 1997.
<PAGE>

      ACCOUNTING  FOR INCOME TAXES Williams and its  wholly-owned  subsidiaries,
which includes  Transco,  file a consolidated  federal income tax return.  It is
Williams'  policy to charge or credit  Transco with an amount  equivalent to its
federal  income  tax  expense  or benefit  computed  as if  Transco  had filed a
separate return.

      Transco uses the liability  method of accounting for deferred income taxes
which  requires,  among other things,  provisions for all temporary  differences
between  the  financial  basis  and  the  tax  basis  in  Transco's  assets  and
liabilities and adjustments to the existing deferred tax balances for changes in
tax rates,  whereby such balances will more closely approximate the actual taxes
to be paid.

      REVENUE  RECOGNITION  Revenues for sales of products are recognized in the
period of delivery and revenues from the  transportation  of gas are  recognized
based on  contractual  terms and the  related  transported  volumes.  Transco is
subject to FERC regulations and, accordingly,  certain revenues collected may be
subject to possible refunds upon final orders in pending cases.  Transco records
rate refund  liabilities  considering  Transco and other third party  regulatory
proceedings,  advice of counsel and estimated total exposure,  as discounted and
risk weighted, as well as collection and other risks.

      ALLOWANCE FOR DOUBTFUL  RECEIVABLES Due to its customer base,  Transco has
not  historically  experienced  recurring  credit losses in connection  with its
receivables.  As a  result,  receivables  determined  to  be  uncollectible  are
reserved or written  off in the period of such  determination.  At December  31,
1999 and 1998, Transco had no allowance for doubtful accounts.

      USE OF ESTIMATES  The  preparation  of financial  statements in conformity
with  generally  accepted  accounting  principles  requires  management  to make
estimates and assumptions  that affect the amounts  reported in the consolidated
financial  statements and accompanying  notes.  Actual results could differ from
those estimates.

      ALLOWANCE FOR FUNDS USED DURING  CONSTRUCTION The allowance for funds used
during construction (AFUDC) represents the cost of funds applicable to regulated
natural  gas  transmission   plant  under  construction  as  permitted  by  FERC
regulatory practices.  The allowance for borrowed funds used during construction
was $1.7  million,  $2.6  million  and $2.4  million  for  1999,  1998 and 1997,
respectively.  The allowance for equity funds was $3.9 million, $7.2 million and
$5.4 million for 1999, 1998 and 1997, respectively.

      GAS IN STORAGE Transco  utilizes the last-in,  first-out  (LIFO) method of
accounting for inventory gas in storage.
<PAGE>

      GAS  IMBALANCES  In the course of  providing  transportation  services  to
customers,  Transco may receive  different  quantities of gas from shippers than
the  quantities  delivered on behalf of those  shippers.  Additionally,  Transco
transports  gas  on  various  pipeline  systems  which  may  deliver   different
quantities of gas on behalf of Transco than the  quantities of gas received from
Transco.  These transactions result in gas transportation and exchange imbalance
receivables  and payables  which are  recovered or repaid in cash or through the
receipt or  delivery of gas in the future and are  recorded in the  accompanying
Consolidated Balance Sheet.  Settlement of imbalances requires agreement between
the   pipelines  and  shippers  as  to   allocations   of  volumes  to  specific
transportation  contracts  and timing of  delivery  of gas based on  operational
conditions.  Transco's  tariff  includes a method  whereby  most  transportation
imbalances  generated  after  August 1,  1991 are  settled  on a monthly  basis.
Imbalances  predating  August 1, 1991 are being  recovered  or repaid in cash or
through the receipt or delivery of gas upon  agreement  of the parties as to the
allocation  of  the  gas  volumes,   and  as  permitted  by  pipeline  operating
conditions.  These  imbalances have been classified as current assets or current
liabilities at December 31, 1999 and 1998.

      EMPLOYEE  STOCK-BASED AWARDS Employee stock-based awards are accounted for
under Accounting  Principles Board Opinion (APBO) No. 25,  "Accounting for Stock
Issued to Employees" and related  interpretations.  Williams'  fixed plan common
stock options do not result in compensation expense,  because the exercise price
of the stock options equals the market price of the underlying stock on the date
of grant.

      NEW ACCOUNTING  STANDARDS The Financial  Accounting Standards Board issued
Statement of Financial  Accounting  Standards  (SFAS) No. 133,  "Accounting  for
Derivative  Instruments and Hedging  Activities".  This standard,  as amended by
SFAS No. 137,  will be effective  for Transco  beginning  January 1, 2001.  This
standard requires that all derivatives be recognized as assets or liabilities in
the balance  sheet and that those  instruments  be  measured at fair value.  The
effect of this  standard  on  Transco's  results  of  operations  and  financial
position is being evaluated.

      The American  Institute of Certified  Public  Accountants  (AICPA)  issued
Statement  of  Position  (SOP)  98-5,   "Reporting  on  the  Costs  of  Start-Up
Activities," effective January 1, 1999. The SOP requires that all start-up costs
be  expensed  as  incurred.  The SOP did not  have  any  significant  effect  on
Transco's  reported  consolidated  results of operations,  financial position or
cash flows.

      RECLASSIFICATIONS  Certain  reclassifications  have  been  made  in  the
1998  and  1997  financial statements to conform to the 1999 presentation.



<PAGE>



                    3. CONTINGENT LIABILITIES AND COMMITMENTS

RATE AND REGULATORY MATTERS

      GENERAL  RATE CASE  (DOCKET NO.  RP97-71)  On  November  1, 1996,  Transco
submitted to the FERC a general rate case filing principally designed to recover
costs associated with increased  capital  expenditures.  These increased capital
expenditures primarily relate to system reliability, integrity and Clean Air Act
compliance.

      When stated on a comparable basis, the rates Transco placed into effect on
May 1, 1997,  subject to refund,  represented an annual cost of service increase
of  approximately  $47  million  over the cost of service  underlying  the rates
contained in the  settlement of Transco's  last general rate filing  (Docket No.
RP95-197).

      The filing also included (1) a pro-forma  proposal to roll-in the costs of
Transco's  Leidy Line and  Southern  expansion  incremental  projects  and (2) a
pro-forma  proposal to make  interruptible  transportation  (IT) backhaul  rates
equal to the IT forward haul rates.

      On November 29, 1996, the FERC issued an order accepting Transco's filing,
suspending  its  effectiveness  until  May 2,  1997  (subsequently  revised,  on
rehearing,   to  May  1,  1997)  and  establishing  a  hearing  to  examine  the
reasonableness of Transco's proposed rates. In addition,  the order consolidated
Transco's  pro forma  roll-in  proposal  with the Phase II hearing in Docket No.
RP95-197.

      On January  20,  1998,  Transco  filed a  Stipulation  and  Agreement  for
approval by the FERC,  which resolves all cost of service,  throughput and other
issues in this proceeding,  except rate of return, capital structure and certain
minor cost allocation and rate design issues.  On June 12, 1998, the FERC issued
an order approving the settlement.  On October 30, 1998,  Transco issued refunds
in  connection  with the  settlement in the amount of $89.5  million,  including
interest,  for which Transco had previously  provided a reserve.  The issues not
resolved  by  the  settlement  were  litigated  by  the  parties  before  a FERC
Administrative  Law Judge (ALJ).  On March 30, 1999,  the ALJ issued her initial
decision  which is  consistent  with the rate of return  and  capital  structure
policies  FERC  announced in RP95-197 (see  discussion  below).  Applying  these
policies,  the ALJ recommended  utilization of Transco's own capital  structure,
consisting of 60.2% equity, and a return on equity of 12.40%. The ALJ's decision
is subject to FERC  review.  Based on  developments  in  regulatory  proceedings
involving  Transco,  and on advice from counsel,  in the fourth quarter of 1999,
Transco  adjusted its  remaining  reserve for rate  refunds by $23.4  million to
reflect its conclusion  that the risk  associated with one of the issues in this
proceeding  has been  eliminated.  Transco is  continuing  to accrue  amounts to
account for other issues that may ultimately  affect Transco's rate of return in
this  proceeding.  Transco  believes the  remaining  reserve is adequate for any
refunds that may be required.
<PAGE>

      GENERAL RATE CASE (DOCKET NO.  RP95-197) On March 1, 1995,  Transco  filed
with the FERC a  general  rate  case  that  proposed  changes  in the  rates for
Transco's  transportation,  sales and storage  service rate schedules  effective
April 1, 1995.  The  changes  in rates,  if  accepted  as  proposed,  would have
generated  additional  annual  jurisdictional  revenues  of  approximately  $132
million over the pre-filed  rates in effect,  based,  among other things,  on an
increase in Transco's  cost of capital  resulting from an increase in the equity
component of the capital  structure  used (the filing was based on Transco's own
capital  structure)  and in the cost of equity from the pre-filed rate of return
on equity of 14.45% to the proposed rate of return on equity of 15.25%.

      On March 31,  1995,  the FERC issued an order on  Transco's  filing  which
accepted and  suspended  the tariff sheets  relating to Transco's  rates,  to be
effective  September  1,  1995,  subject  to  refund,  and  established  hearing
procedures.

      On June 19, 1996,  Transco filed with the FERC a Stipulation and Agreement
which resolved cost of service  (except  capital  structure and rate of return),
throughput  level and mix, and certain cost  allocation  and rate design issues.
The  agreement  also reserved  certain  other issues for hearing,  including the
issue of  rolled-in  pricing  for  incremental  Leidy  Line  services.  With the
exception of one party that filed comments opposing the settlement and one party
that took no position on the merits of the  settlement,  all active  parties and
the FERC's staff either  supported the  settlement or did not oppose it. Transco
began billing the settlement rates to non-contesting parties effective August 1,
1996.

      On  October  9,  1996,  Transco  filed  with  the FERC a  Stipulation  and
Agreement which, subject to the outcome of the litigation of the reserved issues
in this  proceeding,  settled the issues of cost of service and throughput  with
the one party that opposed the  resolution  of those issues in the June 19, 1996
settlement.

      On  November  1,  1996,  the FERC  issued an order  approving  the June 19
agreement,  and on  December  23,  1996,  FERC  approved  the  October  9,  1996
agreement.  On February 3, 1997,  the FERC denied  rehearing  of its November 1,
1996 order. As a result,  Transco made refunds on May 30, 1997 of  approximately
$79.0 million,  including interest,  under Docket No. RP95-197 for which Transco
had previously provided a reserve.

      Following  a hearing  before an ALJ,  the ALJ's  initial  decision  and an
August 1, 1997,  order from the FERC, the FERC issued a rehearing  order on July
29,  1998,  addressing  Transco's  capital  structure  and  rate of  return  for
ratemaking  purposes.  As to capital  structure,  the FERC  affirmed  the use of
Transco's  own capital  structure,  consisting of 57.58%  equity,  in developing
Transco's  rate of return in this  proceeding.  As discussed  in greater  detail
below,  the FERC also modified its previously  used  methodology for determining
return  on  equity.   Applying  its  revised  methodology  to  Transco  in  this
proceeding,  the FERC  established  a rate of return on equity  for  Transco  of
12.49%.  A joint request for rehearing of the July 29, 1998 order was filed with
the FERC and,  on December 1, 1998,  the FERC denied  rehearing.  On January 29,
1999,  most of the same  parties  that were  involved  in the joint  request for
rehearing  filed a notice of appeal with the United  States Court of Appeals for
the District of Columbia (D.C. Circuit Court).  Transco made refunds on March 1,
1999 of  approximately  $96.0  million,  including  interest,  under  Docket No.
RP95-197 for which Transco had previously  provided a reserve.  During the first
half  of  1999,  Transco  engaged  in an  analysis  of  the  court  appeal  and,
particularly,   its  likely   results.   Based  on  developments  in  regulatory
proceedings  in the second  quarter of 1999  involving  Transco and others,  and
advice received from counsel,  Transco  adjusted its remaining  reserve for rate
refunds  ($28.1 million of principal and $5.9 million of interest) in the second
quarter  of 1999  to  take  into  account  the  FERC's  revised  rate of  return
methodology  as applied in the July 29, 1998,  and  December 1, 1998 orders.  On
February 7, 2000,  the D.C.  Circuit  Court  denied the appeal  filed in January
1999.
<PAGE>

      The hearing  concerning  the other cost  allocation and rate design issues
not  resolved by the June 19, 1996 and October 9, 1996  agreements  concluded in
November 1996. A supplemental  hearing to consider  Transco's  roll-in  proposal
filed in Docket No. RP97-71,  as discussed above, was completed in June 1997. On
March 24, 1998, the ALJ issued an initial decision on all of these issues. As to
the main issue addressed in the decision,  rolled-in pricing, the ALJ determined
that the proponents of roll-in, including Transco, must satisfy the burden under
Section 5 of the NGA and demonstrate  that Transco's  existing  incremental rate
treatment  is unjust  and  unreasonable  and that the  proposed  rolled-in  rate
treatment is just and reasonable.  The ALJ ruled that neither Transco nor any of
the other roll-in  proponents  had satisfied  that burden and,  therefore,  that
Transco's  existing  incremental rate treatment must remain in effect.  On April
16, 1999, the FERC issued an order reversing the ALJ,  concluding that Transco's
proposal  did not have to meet the  Section  5 burden  discussed  above and that
under the appropriate  standard,  Section 4, Transco had  demonstrated  that its
proposal  was just and  reasonable.  As a result,  the FERC  remanded to the ALJ
issues  regarding the  implementation  of Transco's  roll-in  proposal.  Several
parties have filed requests for rehearing of the FERC's April 16, 1999 order.

      RATE OF RETURN  CALCULATION  The FERC uses a methodology  for  calculating
pipeline rates of return that  incorporates a long-term  growth rate  component.
The  long-term  growth rate  component  used by the FERC is a projection of U.S.
gross domestic  product  growth rates.  Generally,  calculating  rates of return
utilizing a methodology which includes a long-term growth rate component results
in rates of return  that are lower  than they would be if the  long-term  growth
rate  component were not included in the  methodology.  On January 30, 1998, the
FERC  convened a public  conference  to explore,  among other  things,  possible
modifications to the FERC's rate of return  methodology.  As discussed above, in
its July 29, 1998 order,  the FERC modified its rate of return  methodology with
regard to the weight to be given to the long-term  growth  component.  Under its
previous  methodology,   the  FERC  averaged  the  short  and  long-term  growth
projections,  thereby giving them equal weight.  In its July 29, 1998 order, the
FERC changed its policy and will accord the  short-term  projection a two-thirds
weighting  and the  long-term  projection  a one-third  weighting.  The FERC has
determined  that the short-term  projection is more reliable and should be given
more weight,  but that the long-term  projection  should be given some weight in
order to normalize any distortions that may be reflected in the short-term data.
The revised weighting to be reflected in the FERC's  methodology  should lead to
somewhat  higher rates of return on equity than were obtained under the previous
methodology.  In  addition,  the FERC will now  permit  parties  to argue that a
pipeline's  return on equity be  established  at any point  within  the range of
returns developed under the two-stage methodology (rather than only at the high,
mid or low point in the range) based on the  pipeline's  relative level of risk.
In that regard,  when assessing a pipeline's  relative risk, the FERC determined
that it will not lower a  pipeline's  return on equity if its lower  risk is the
result of the  pipeline's own  efficiency,  but will focus on risks faced by the
pipeline  that are  attributable  to  circumstances  outside  the control of the
pipeline's management.
<PAGE>

      PRODUCTION AREA RATE DESIGN (DOCKET NOS. RP92-137,  RP93-136 AND RP98-381)
Transco has  expressed to the FERC concerns that  inconsistent  treatment  under
Order 636 of Transco and its competitor pipelines with regard to rate design and
cost  allocation  issues in the production  area may result in rates which could
make Transco less competitive,  both in terms of  production-area  and long-haul
transportation.  A hearing  before an ALJ (Docket Nos.  RP92-137 and  RP93-136),
dealing  with,  among  other  things,  Transco's  production-area  rate  design,
concluded  in June 1994.  On July 19, 1995,  the ALJ issued an initial  decision
finding that Transco's  proposed  production area rate design,  and its existing
use of a system  wide cost of service  and  allocation  of firm  capacity in the
production area are unjust and unreasonable.  The ALJ therefore recommended that
Transco divide its costs between its production area and market area, and permit
its customers to renominate their firm entitlements.

      On July 3, 1996,  the FERC issued an order on review of the ALJ's  initial
decision concerning,  among other things, Transco's production area rate design.
The FERC  rejected  the ALJ's  recommendations  that  Transco  divide  its costs
between  its  production  area and market  area,  and permit  its  customers  to
renominate  their firm  entitlements.  The FERC also  concluded that Transco may
offer firm service on its supply  laterals  through an open season and eliminate
its IT feeder service in favor of an interruptible  service option that does not
afford  shippers  feeding  firm  transportation  on  Transco's  production  area
mainline a priority  over other  interruptible  transportation.  On December 18,
1996,  the FERC denied  rehearing  of its July 3, 1996 Order.  Several  parties,
including  Transco,  filed petitions for review in the D.C. Circuit Court of the
FERC's orders addressing  production area rate design issues. Those appeals were
held in abeyance  pending the outcome of the proceedings in Transco's Docket No.
RP98-381.  In light of the FERC's orders rejecting  Transco's proposal in Docket
No. RP98-381,  Transco withdrew its appeal and the remaining appeal was restored
to the active docket.

      On August 31,  1998,  Transco made a limited NGA Section 4 filing with the
FERC to  implement  firm  transportation  service on Transco's  production  area
supply  laterals in accordance  with the option  authorized by the FERC's July 3
and December 18, 1996 orders.  The filing  (Docket No.  RP98-381) was protested,
and on  September  30, 1998,  the FERC  accepted  the filing and  suspended  its
effectiveness until March 1, 1999, subject to further  proceedings.  On December
16, 1998,  the FERC  determined  that the filing was not barred by prior Transco
settlements,  but on February 24, 1999,  issued an order  rejecting  the filing,
finding that Transco's proposal, as filed, conflicts with certain FERC policies.
The FERC indicated that Transco could pursue  implementation  of firm service on
Transco's  production  area  supply  laterals  to  the  extent  the  service  is
structured in a way that conforms with those policies.  Transco sought rehearing
of the February  24, 1999 order and on July 29,  1999,  the FERC issued an order
denying all requests for rehearing in this  proceeding.  As a result,  Transco's
production area supply lateral service remains unchanged.
<PAGE>

      GATHERING  FACILITIES  SPIN-DOWN  ORDER  (DOCKET  NOS.   CP96-206-000  AND
CP96-207- 000) In February 1996,  Transco filed an application with the FERC for
an order authorizing the abandonment of certain  facilities  located onshore and
offshore in Texas,  Louisiana  and  Mississippi  by  conveyance  to Williams Gas
Processing - Gulf Coast Company (Gas Processing),  an affiliate of Transco.  The
net book value  recorded by Transco at December 31, 1999 of the  facilities  was
approximately  $475 million.  Operating  income recorded by Transco for the year
ended December 31, 1999  associated  with the facilities was  approximately  $11
million; however, such operating income may not be representative of the effects
of the spin-down on Transco's  future  operating  income due to various factors,
including  future  regulatory  actions.  Concurrently,  Gas  Processing  filed a
petition for declaratory  order  requesting a  determination  that its gathering
services  and rates be exempt from FERC  regulation  under the NGA. On September
25, 1996,  the FERC issued an order  dismissing  Transco's  application  and Gas
Processing's  petition for declaratory  order. On October 25, 1996,  Transco and
Gas  Processing  filed a joint request for rehearing of the FERC's  September 25
order, and in August 1997 filed a request that rehearing be expedited.

      On  June 1,  1998,  the  FERC  issued  a  Notice  of  Inquiry  (NOI)  into
alternative  methods for regulating natural gas pipeline facilities and services
on the Outer  Continental  Shelf  (OCS).  The  purpose of the NOI is to generate
public comment that will assist the FERC in exploring  possible  alternatives to
the FERC's current test used to determine whether offshore  pipeline  facilities
and services should be subject to the FERC's NGA jurisdiction.

      On June 30, 1999,  informed by the  comments  submitted in response to the
NOI,  the FERC issued a Notice of Proposed  Rulemaking  (NOPR),  which  proposes
regulatory  requirements  under the Outer Continental Shelf Lands Act (OCSLA) to
ensure that gas is  transported on an open and  nondiscriminatory  basis through
pipelines  located  on the OCS.  The  proposed  regulations  will  apply both to
NGA-jurisdictional and NGA-exempt offshore gas transportation service providers,
and will require that those OCS gas transportation service providers, subject to
certain exemptions,  make available information regarding their affiliations and
the  conditions  under  which  service is  rendered.  These  proposed  reporting
requirements   are  intended  by  the  FERC  to  assure  that  open  access  and
nondiscriminatory  conditions  of service,  including  nondiscriminatory  rates,
exist for  shippers  using OCS  facilities.  The FERC is seeking  comments  from
interested persons on the regulations proposed in the NOPR.

      Also on June 30, 1999,  the FERC  modified,  in a case involving Sea Robin
Pipeline   Company,   the  test  that  the  FERC  will  use  to  determine   the
jurisdictional  status of OCS pipeline systems.  In the Sea Robin case, the FERC
determined that in assessing the jurisdictional  status of offshore  facilities,
the location of gas processing plants will not be afforded greater  significance
than other factors used in the test. In addition,  the FERC  determined that the
location of a collection facility,  where gas is delivered by several relatively
small  diameter  lines for  aggregation  and  preparation  for further  delivery
onshore through a single larger diameter  pipeline,  will be given  considerable
weight  for   determining   the   demarcation   point   between   gathering  and
jurisdictional  transportation on the OCS. The FERC stated that it will use this
modified  test,  and any  additional  refinements  that the FERC may  develop to
further adapt the test to the physical  characteristics of moving gas across the
OCS, to determine the jurisdictional status of the OCS pipeline systems.
<PAGE>

      TILDEN/MCMULLEN  FACILITIES SPIN-DOWN PROCEEDING (DOCKET NOS. CP98-236 AND
242) In  February  1998,  Transco  filed an  application  with the FERC  seeking
authorization  to abandon  Transco's  onshore  Tilden/McMullen  Gathering System
located  in  Texas by  conveyance  to Gas  Processing.  Gas  Processing  filed a
contemporaneous  request that the FERC declare that the facilities  sought to be
abandoned  would  be  considered  nonjurisdictional  gathering  facilities  upon
transfer to Gas  Processing.  In May 1999,  the FERC issued an order in which it
determined  that certain of the facilities  would be gathering  facilities  upon
transfer to Gas Processing,  i.e., 1) those facilities upstream of and including
the Tilden Plant, 2) the South McMullen and Goebel Laterals  located  downstream
of the Tilden Plant, and 3) the small,  short laterals which branch out from the
McMullen  Lateral  downstream  of the Tilden  Plant at several  points along its
length.  However,  the FERC determined that the McMullen Lateral itself, as well
as two compressor  units, are  jurisdictional  facilities,  but authorized their
abandonment  subject to Gas Processing  obtaining a certificate to operate those
facilities.  The net book  value at  December  31,  1999 of the  Tilden/McMullen
facilities was  approximately  $62 million.  Operating income for the year ended
December 31, 1999 associated with those  facilities is estimated to be less than
$3 million;  however,  such operating  income may not be  representative  of the
effects of the  spin-down on Transco's  future  operating  income due to various
factors, including future regulatory actions. Transco's abandonment authority is
effective  for one year from the date of  issuance  of the order.  Transco  must
notify the FERC of the effective date of the  abandonment  within 10 days of the
transfer. On June 3, 1999, Transco and Gas Processing filed for rehearing of the
order with regard to the  facilities  classified  by the FERC as  jurisdictional
facilities, and on October 5, 1999, the FERC denied the rehearing request.

      REGULATION OF SHORT TERM NATURAL GAS  TRANSPORTATION  SERVICE  (DOCKET NO.
RM98-10-000) AND REGULATION OF NATURAL GAS  TRANSPORTATION  SERVICES (DOCKET NO.
RM98-12-000)  On July 29, 1998, the FERC issued a Notice of Proposed  Rulemaking
(NOPR) and a Notice of  Inquiry  (NOI),  proposing  revisions  to,  and  seeking
comments on, its regulatory  policies for interstate  natural gas transportation
service.  In the NOPR (Docket No.  RM98-10-000),  the FERC proposed revisions to
its regulations to reflect  changes in the market for short-term  transportation
services on pipelines.  The FERC proposes to eliminate cost-based  regulation of
short-term  transportation  services and implement  regulatory policies that are
intended  to  maximize  competition  in the  short-term  transportation  market,
mitigate the ability of firms to exercise  residual  monopoly  power and provide
opportunities  for greater  flexibility  in the provision of pipeline  services.
Included  among  the  proposed  changes  were  initiatives  to  revise  pipeline
scheduling  procedures,   receipt  and  delivery  point  policies,  and  penalty
policies,  to require pipelines to auction  short-term  capacity,  to revise the
FERC's reporting requirements,  to permit pipelines to negotiate rates and terms
of service,  and to revise  certain rate and  certificate  policies.  In the NOI
(Docket No.  RM98-12-000),  the FERC sought comments on its pricing  policies in
the existing  long-term market and pricing  policies for new capacity.  On April
22,  1999,  Williams  filed  comments on the NOPR and NOI. In general,  Williams
comments were supportive of the FERC's  initiatives,  particularly to the extent
that  such  initiatives  would  result  in  a  more  competitive,   market-based
environment.
<PAGE>

      On February 9, 2000, the FERC issued a final rule,  Order 637, in response
to the  comments  received  on the NOPR and NOI.  The FERC  adopts  in Order 637
certain  policies that it finds are  necessary to adjust its current  regulatory
model to the needs of the evolving markets,  but determines that any fundamental
changes to its regulatory policy,  which changes were raised and commented on in
the NOPR and NOI, will be considered  after further study and  evaluation of the
evolving marketplace. Most significantly, in Order 637, the FERC (i) revises its
pricing policy to waive, for a two-year  period,  the maximum price ceilings for
short-term  releases  of  capacity  of less  than one  year,  and  (ii)  permits
pipelines to file proposals to implement seasonal rates for short-term  services
and  term-differentiated  rates, subject to certain  requirements  including the
requirement  that a  pipeline  be  limited  to  recovering  its  annual  revenue
requirement under those rates.

      STATEMENT  OF  POLICY  ON  CERTIFICATION  OF NEW  INTERSTATE  NATURAL  GAS
PIPELINE  FACILITIES  (DOCKET NO.  PL99-3-000)  On September 15, 1999,  the FERC
issued a Policy  Statement  to provide  guidance to the industry on how the FERC
will  evaluate   proposals  for  the  certification  of  new  pipeline  facility
construction.  The Policy  Statement  is the  result,  in part,  of  information
received by the FERC in comments on the NOPR and NOI as well as a recent  public
conference on future demand for natural gas in the  northeastern  United States.
The  FERC's  stated  goals  in  issuing  the  Policy  Statement  are  to  foster
competitive   markets,   protect  captive   customers,   and  avoid  unnecessary
environmental and community impacts while serving increasing demands for natural
gas. The FERC also seeks to provide appropriate incentives for the optimal level
of construction and efficient customer choices,  and for applicants to structure
their projects to avoid,  or minimize,  the potential  impacts that could result
from  construction  of a  project.  The  Policy  Statement  sets  forth  several
analytical  steps that will be used by the FERC in evaluating  applications  for
new facility  construction.  The  threshold  question for existing  pipelines is
whether the project can proceed without  subsidies from the pipeline's  existing
customers,  which usually,  but not always,  will mean that the project would be
incrementally  priced.  The FERC will then  determine  whether the applicant has
made efforts to eliminate or minimize any adverse effects the project might have
on existing  customers  of the  applicant  pipeline,  existing  pipelines in the
market and their captive  customers,  or landowners and communities  affected by
the route of the new pipeline.  If adverse  economic effects are found, the FERC
will balance the public benefits of the project against the adverse effects, and
will  proceed to evaluate  the  application  only if the  benefits  outweigh the
adverse  economic  effects.  If the  proposed  project will not have any adverse
effects, no balancing of the benefits against adverse impacts will be necessary.
The  Policy  Statement  does not apply to new  construction  covered  by blanket
certificate  authority and originally did not apply to new construction  covered
by optional certificate authority. The FERC has indicated that it will not apply
the Policy Statement to applications  received prior to July 29, 1998.  Numerous
parties filed comments on, or petitions for,  rehearing of the Policy Statement,
and on February 9, 2000 the FERC issued an order clarifying the Policy Statement
to  provide,  among  other  things  and  most  significantly,  that  the  Policy
Statement's  balancing process can be used to rebut the presumption  embodied in
the  optional  certificate  regulation  that a project is required by the public
convenience and necessity.  The Policy Statement is not a rule, but will be used
by the FERC to evaluate applications on a case-by-case basis.
<PAGE>

LEGAL PROCEEDINGS

      ROYALTY CLAIMS AND LITIGATION In connection with Transco's  renegotiations
with producers to resolve take-or-pay and other contract claims and to amend gas
purchase  contracts,  Transco entered into certain settlements which may require
the indemnification by Transco of certain claims for additional  royalties which
the  producers may be required to pay as a result of such  settlements.  Transco
has been made aware of demands on producers  for  additional  royalties and such
producers may receive other demands which could result in claims against Transco
pursuant to the  indemnification  provisions  in their  respective  settlements.
Indemnification  for royalties will depend on, among other things,  the specific
lease  provisions  between  the  producer  and the  lessor  and the terms of the
settlement between the producer and Transco.

      On March 15,  1994,  a lawsuit  was filed in the 189th  Judicial  District
Court of Harris County, Texas (Texaco,  Inc. vs.  Transcontinental Gas Pipe Line
Corporation).  In this  lawsuit,  the plaintiff  has claimed  approximately  $23
million, including interest and attorneys' fees for reimbursements of settlement
amounts paid to royalty owners. On October 16, 1997, a jury verdict in this case
found that  Transco was  required to pay Texaco  damages of $14.5  million  plus
$3.75 million in attorney's  fees. The trial judge initially  deferred  entering
judgment and directed  the parties to  participate  in mediation of this matter.
Following  mediation  in 1998,  which  did not  result in a  resolution  of this
matter,  the trial judge entered  judgment  consistent with the jury verdict and
also awarded  prejudgment  interest of $5.0  million.  Transco is appealing  the
verdict and  continues to believe that it has  meritorious  defenses to Texaco's
claims.

      In  addition,  Transco was  notified by  Freeport-McMoRan,  Inc.  (FMP) in
February 1995, that pursuant to a settlement with the Mineral Management Service
(MMS) of the MMS' claim for royalties due under gas  contracts  between  Transco
and FMP which had been modified  pursuant to settlement  agreements made in 1986
and 1989,  FMP was asserting a claim for  indemnification  of  approximately  $6
million,  including  interest,  under the  excess  royalty  provisions  of those
settlement  agreements.  On or about March 30,  1995,  FMP filed a petition  for
specific performance seeking recovery against Transco for the sums claimed under
the settlement agreements. In May 1998, FMP filed a motion for summary judgement
which Transco opposed. In September 1998, the court granted FMP's motion finding
that  at  least  a  portion  of  FMP's   payment  to  the  MMS  was  subject  to
indemnification. Transco has appealed the court's ruling.

      In August 1996, a lawsuit was filed  against  Transco and certain  Transco
affiliates by a royalty owner in a gas producing  field in Brooks County,  Texas
alleging a claim for incorrect  computation of royalties.  Transco is alleged to
have purchased gas from the field. Transco has filed an answer denying liability
for the claim.
<PAGE>

      In 1998, the United States  Department of Justice  informed  Williams that
Jack  Grynberg,  an individual,  had filed claims in the United States  District
Court for the District of Colorado  under the False Claims Act against  Williams
and certain of its wholly- owned subsidiaries  including  Transco.  Mr. Grynberg
has also filed  claims  against  approximately  300 other energy  companies  and
alleges that the defendants violated the False Claims Act in connection with the
measurement  and purchase of  hydrocarbons.  The relief sought is an unspecified
amount  of  royalties  allegedly  not  paid to the  federal  government,  treble
damages,  a civil penalty,  attorneys'  fees,  and costs.  On April 9, 1999, the
United States Department of Justice announced that it was declining to intervene
in any of the Grynberg  qui tam cases;  including  the action filed  against the
Williams  entities  in the United  States  District  Court for the  District  of
Colorado.   On  October  21,  1999,  the  Panel  on  Multi-District   Litigation
transferred  all of the Grynberg qui tam cases,  including  those filed  against
Williams,  to the United States  District  Court for the District of Wyoming for
pre-trial purposes.

ENVIRONMENTAL MATTERS

      In July 1999,  Transco received a letter stating that the U.S.  Department
of Justice (DOJ), at the request  of the U.S.  Environmental  Protection  Agency
(EPA),  intends  to file a civil  action  against Transco arising from its waste
management  practices  at  Transco's  compressor  stations and metering stations
located in eleven (11) states from Texas to New Jersey. DOJ stated in the letter
that its complaint will seek civil penalties and injunctive relief under federal
environmental laws.  DOJ offered to discuss settlement of the claim and
discussions  began in September  1999.  While no specific amount was proposed,
DOJ stated that any settlement must include an appropriate civil penalty for the
alleged violations.  Transco cannot reasonably estimate the amount of its
potential liability, if any, at this time.  However, Transco believes it has
substantially addressed environmental concerns on its system through ongoing
voluntary remediation and management programs.

      Transco is subject to  extensive  federal,  state and local  environmental
laws  and  regulations  which  affect  Transco's   operations   related  to  the
construction and operation of its pipeline facilities.  Appropriate governmental
authorities may enforce these laws and  regulations  with a variety of civil and
criminal  enforcement  measures,  including monetary  penalties,  assessment and
remediation requirements and injunctions as to future compliance.  Transco's use
and  disposal of  hazardous  materials  are subject to the  requirements  of the
federal Toxic Substances Control Act (TSCA),  the federal Resource  Conservation
and  Recovery  Act (RCRA)  and  comparable  state  statutes.  The  Comprehensive
Environmental  Response,  Compensation and Liability Act (CERCLA), also known as
"Superfund,"  imposes liability,  without regard to fault or the legality of the
original  act,  for release of a  "hazardous  substance"  into the  environment.
Because these laws and regulations change from time to time, practices that have
been  acceptable  to the industry and to the  regulators  have to be changed and
assessment  and  monitoring  have to be  undertaken  to determine  whether those
practices  have damaged the  environment  and whether  remediation  is required.
Since 1989,  Transco has had studies  underway to test certain of its facilities
for the presence of toxic and hazardous  substances to determine to what extent,
if any,  remediation  may be  necessary.  On the basis of the  findings to date,
Transco estimates that environmental  assessment and remediation costs that will
be incurred  over the next five years under TSCA,  RCRA,  CERCLA and  comparable
state statutes will total approximately $25 million to $30 million,  measured on
an  undiscounted  basis.  This  estimate  depends  upon a number of  assumptions
concerning the scope of remediation  that will be required at certain  locations
and the cost of remedial  measures to be  undertaken.  Transco is  continuing to
conduct  environmental  assessments  and is  implementing  a variety of remedial
measures that may result in increases or decreases in the total estimated costs.
At December 31,  1999,  Transco had a reserve of  approximately  $25 million for
these  estimated  costs that has been recorded in current  liabilities and other
long-term liabilities in the accompanying Consolidated Balance Sheet.
<PAGE>

      Transco considers environmental assessment and remediation costs and costs
associated  with  compliance  with  environmental  standards  to be  recoverable
through rates,  since they are prudent costs incurred in the ordinary  course of
business.  To date, Transco has been permitted  recovery of environmental  costs
incurred, and it is Transco's intent to continue seeking recovery of such costs,
as  incurred,  through  rate  filings.   Therefore,  these  estimated  costs  of
environmental assessment and remediation have been recorded as regulatory assets
in the accompanying Consolidated Balance Sheet.

      Transco has used  lubricating  oils containing  polychlorinated  biphenyls
(PCBs) and,  although the use of such oils was  discontinued  in the 1970s,  has
discovered  residual PCB  contamination  in  equipment  and soils at certain gas
compressor   station   sites.   Transco  has  worked  closely  with  the  U.  S.
Environmental Protection Agency (EPA) and state regulatory authorities regarding
PCB issues, and has a program to assess and remediate such conditions where they
exist,  the costs of which are included in the $25 million to $30 million  range
discussed  above.  Civil  penalties  have been assessed by the EPA against other
major  pipeline  companies  for the alleged  improper  use and disposal of PCBs.
Transco  has  received  and  responded  to  information  requests  from the EPA.
Although penalties have not presently been asserted except as indicated above in
reference to the July,  1999 DOJ letter,  no assurance can be given that the EPA
will not seek such penalties in the future.

      Transco has been  identified as a potentially  responsible  party (PRP) at
various  Superfund and state waste disposal sites.  Based on present  volumetric
estimates  and  other  factors,   Transco's  estimated  aggregate  exposure  for
remediation  of these sites is less than  $500,000.  The  estimated  remediation
costs for all such sites have been included in Transco's  environmental  reserve
discussed above.  Liability under CERCLA (and applicable state law) can be joint
and  several  with other PRPs.  Although  volumetric  allocation  is a factor in
assessing  liability,  it is not necessarily  determinative;  thus, the ultimate
liability could be substantially greater than the amounts described above.
<PAGE>

      Transco is also  subject to the  federal  Clean Air Act and to the federal
Clean Air Act Amendments of 1990 (1990 Amendments), which added significantly to
the existing  requirements  established  by the federal  Clean Air Act. The 1990
Amendments required that the EPA issue new regulations, mainly related to mobile
sources,  air toxics,  ozone non-attainment areas and acid rain. During the last
few years Transco has been  acquiring all necessary  permits and  installing new
emission  control  devices  required  for new or  modified  facilities  in areas
designated as attainment by EPA and is continuing that process. Transco operates
facilities in some areas of the country  currently  designated as non-attainment
and it  anticipates  that  by the end of the  year  2000  the EPA may  designate
additional new  non-attainment  areas which might impact  Transco's  operations.
Pursuant to  non-attainment  area  requirements of the 1990 Amendments,  and two
recently   promulgated   EPA  rules   designed  to  mitigate  the  migration  of
ground-level ozone (NOx) in 22 eastern states,  Transco is planning installation
of new air pollution controls on existing sources at certain facilities in order
to  achieve  attainment  of  air  quality  standards,   including  NOx  emission
reductions,  in regions where they are not currently  achieved,  and anticipates
that  additional  facilities  may be subject to increased  controls  within five
years. For many of these facilities,  Transco is completing installation of more
cost effective,  innovative  compressor  engine control designs developed by the
Company,  and it is therefore  not possible to precisely  determine  the control
costs pending  completion of performance  testing and final state approval.  The
control additions described above, required to comply with current federal Clean
Air  Act   requirements,   the  1990   Amendments,   and  the  individual  State
Implementation  Plans (SIP) for NOx  reductions,  are  estimated  to cost in the
range of $240  million  to $285  million  by May 2003  and will be  recorded  as
additions to property,  plant and equipment as the facilities are added.  If the
EPA  designates  additional  new  non-attainment  areas  in  2000  which  impact
Transco's operations,  the cost of additions to property, plant and equipment is
expected to  increase,  but Transco is unable at this time to estimate  with any
certainty  the cost of  additions  that may be required  although it is believed
that  some  of  those  costs  are  included  in  the  ranges   discussed  above.
Additionally,  the EPA is expected to promulgate new rules  regarding  Hazardous
Air Pollutants (HAPs) by November 2000 which will impose controls in addition to
the  controls  described  above.  Transco at this time cannot  predict  with any
certainty the exact cost associated with the installation of those controls. The
mandated  compliance  deadline  for the HAP  controls  has been set for November
2003.  Transco considers costs associated with compliance with the federal Clean
Air Act and the 1990  Amendments  to be prudent  costs  incurred in the ordinary
course of business and, therefore, recoverable through its rates.

SUMMARY

      While no  assurances  may be  given,  Transco  does not  believe  that the
ultimate  resolution  of the  foregoing  matters,  taken  as a whole  and  after
consideration of amounts accrued, recovery from customers, insurance coverage or
other indemnification  arrangements,  will have a materially adverse effect upon
Transco's  future  financial  position,  results  of  operations  or  cash  flow
requirements.

OTHER COMMITMENTS

      COMMITMENTS FOR CONSTRUCTION  Transco has commitments for construction and
acquisition  of property,  plant and equipment of  approximately  $62 million at
December 31, 1999 of which the majority  relates to  construction  materials for
pipeline expansion projects.


<PAGE>



                   4. DEBT, FINANCING ARRANGEMENTS AND LEASES

      LONG-TERM  DEBT At December 31, 1999 and 1998,  long-term debt issues were
outstanding as follows (in thousands):
<TABLE>
<CAPTION>

                                                                       1999                  1998
                                                                 ------------------    ------------------

<S>                                                                <C>                   <C>
Debentures:
      7.08% due 2026.........................................      $   200,000           $   200,000
      7.25% due 2026.........................................          200,000               200,000
                                                                 ------------------    ------------------
         Total debentures....................................          400,000               400,000
                                                                 ------------------    ------------------

Notes:
      8-7/8% due 2002........................................          125,000               125,000
      Variable rate due 2002.................................          150,000               150,000
      6-1/8% due 2005........................................          200,000               200,000
      6-1/4% due 2008........................................          100,000               100,000
                                                                 ------------------    ------------------
         Total notes.........................................          575,000               575,000
                                                                 ------------------    ------------------
Total long-term debt issues..................................          975,000               975,000
      Unamortized debt premium...............................              330                   768
                                                                 ------------------    ------------------

Total long-term debt.........................................      $   975,330           $   975,768
                                                                 ==================    ==================
</TABLE>

      Sinking fund or  prepayment  requirements  applicable  to  long-term  debt
outstanding at December 31, 1999 are as follows (in thousands):

2001:

      7.08% Debentures...................................        $  200,000
                                                                ==============

2002:

      8-7/8% Note........................................        $  125,000
      Variable rate note.................................           150,000
                                                                ==============
         Total...........................................        $  275,000
                                                                ==============


      There are no  sinking  fund  requirements  applicable  to  long-term  debt
outstanding for the years 2000, 2003, and 2004.

      No  property  is pledged as  collateral  under any of the  long-term  debt
issues.

      The  7.08%  Debentures  mature  on  July  15,  2026,  but are  subject  to
redemption,  at anytime  after July 15, 2001, at Transco's  option,  in whole or
part, at a specified  redemption  price, plus accrued and unpaid interest to the
date of redemption. The holder of each 7.08% Debenture may elect between May 15,
2001 and June 15, 2001 to have such 7.08%  Debenture  repaid on July 15, 2001 at
100% of the principal  amount.  Because of this option  available to the holder,
the 7.08%  Debentures  have been  included  in the  sinking  fund or  prepayment
requirements  for the year 2001 in the table above. The 7.08% Debentures have no
sinking fund provisions.
<PAGE>

      Williams and certain of its subsidiaries,  including Transco,  are parties
to a $1 billion credit  agreement  (Credit  Agreement),  under which Transco can
borrow up to $400 million if the funds available under the Credit Agreement have
not been borrowed by Williams or other  subsidiaries.  Interest  rates vary with
current market  conditions based on the base rate of Citibank N.A.,  three-month
certificates of deposit of major United States money market banks, federal funds
rate or the London Interbank Offered Rate. As of December 31, 1999,  Transco had
no outstanding borrowings under this agreement.

      In November 1997, Transco entered into interest-rate  forward contracts to
lock in underlying treasury rates on anticipated  long-term debt issuances.  The
contracts  were  terminated  in January 1998 and the  settlement  amount of $9.8
million was deferred in Other Assets in the  accompanying  Consolidated  Balance
Sheet and is being amortized as an adjustment to interest expense over the terms
of the  following  described  notes.  On January 16, 1998,  Transco  issued $200
million of notes that mature on January 15, 2005, and $100 million of notes that
mature  on  January  15,  2008,   which  pay  interest  at  6-1/8%  and  6-1/4%,
respectively,  per annum on January 15 and July 15 of each year,  beginning July
15, 1998. The effective interest rates for the new issues, including the effects
of the forward contract settlements,  are 6.225% and 6.323%,  respectively.  The
Notes  are not  subject  to  redemption  and have no  sinking  fund  provisions.
Proceeds from the Notes were used for general corporate purposes,  including the
repayment of $160 million borrowed under the Credit Agreement.

      SHORT-TERM  DEBT Transco's  short-term  money market  facility  expired in
1999.  During 1999 and 1998,  Transco had no outstanding  borrowings  under this
facility.

      RESTRICTIVE  COVENANTS  At  December  31,  1999,  none of  Transco's  debt
instruments restrict the amount of dividends distributable.

      SALE OF  RECEIVABLES  Transco is a party to an  agreement  that expires on
January  26, 2001  pursuant to which  Transco can sell to an investor up to $100
million of undivided interest in certain of its trade  receivables.  At December
31, 1999 and 1998,  interests in these receivables held by the investor were $92
million and $87 million, respectively.

      LEASE OBLIGATIONS Prior to December 23, 1998,  Transco had a 20-year lease
agreement  with Transco Tower  Limited for its  headquarters  building  (Transco
Tower)  which  expires in 2004  (Transco  Tower  lease).  On December  23, 1998,
Transco assigned and transferred to Laughton,  L.L.C.,  (Laughton), an affiliate
of Transco,  all its right,  title and  interest in the Transco  Tower lease and
entered into an agreement to sublease the premises from  Laughton  through March
29, 2003 (Transco  Tower  sublease).  All other terms of the Transco Tower lease
are incorporated into the Transco Tower sublease,  including sublease agreements
between Transco and other parties that also expire in 2004.

      The future  minimum  lease  payments  under  Transco's  various  operating
leases,  including the Transco Tower  sublease,  net of future minimum  sublease
receipts under Transco's  existing sublease  agreements  through March 29, 2003,
are as follows (in thousands):
<PAGE>
<TABLE>
<CAPTION>
                                                                    Operating Leases
                                               -----------------------------------------------------------
                                                Transco Tower         Other Leases            Total
                                               -----------------    -----------------    -----------------
<S>                                              <C>                  <C>                  <C>
2000......................................       $    22,831          $     3,192          $    26,023
2001......................................            24,387                3,088               27,475
2002......................................            24,318                3,088               27,406
2003......................................             6,075                2,606                8,681
2004......................................                 -                2,509                2,509
Thereafter................................                 -                4,879                4,879
                                               -----------------    -----------------    -----------------
        Total net minimum obligations.....       $    77,611          $    19,362          $    96,973
                                               =================    =================    =================
</TABLE>

      The  allocation  of  the  Williams   purchase  price  to  the  assets  and
liabilities  of Transco  based on their  estimated  fair values  resulted in the
recording in 1995 of a liability of $53.0 million for the estimated unused space
and the amount that  Transco's  Transco Tower lease  obligation was in excess of
fair value. The $53.0 million  liability is being amortized over the term of the
lease.

      Transco's lease expense was $19.3  million in 1999,  $17.4 million in 1998
and $18.0 million in 1997.

                            5. EMPLOYEE BENEFIT PLANS

      PENSION  PLAN  Prior to January 1,  1999,  Transco  maintained  a separate
defined-benefit  pension plan (Transco Plan) that provided benefits to Transco's
officers and employees.  Effective  January 1, 1999, the Transco plan was merged
with and into the Williams  Pension Plan  (Williams  Plan),  a  non-contributory
defined-benefit  pension plan, and Transco began  participation  in the Williams
Plan with Williams and its subsidiaries. Cash contributions related to Transco's
participation  in the Williams Plan totaled $7.6 million in 1999.  The following
table  presents  the  changes in  benefit  obligations  and plan  assets for the
Transco Plan for the year 1998. The table also presents a reconciliation  of the
funded status of the Transco Plan to the amount  recognized in the  Consolidated
Balance Sheet as of December 31, 1998 (in thousands):


<PAGE>




                                                                    1998
                                                               ----------------

Change in benefit obligation:
    Benefit obligation at beginning of year..............        $  237,086
    Service cost.........................................             7,055
    Interest cost........................................            16,499
    Amendments...........................................           (35,014)
    Actuarial loss.......................................            35,521
    Benefits paid........................................           (16,758)
                                                               ----------------
    Benefit obligation at end of year....................           244,389
                                                               ----------------

Change in plan assets:
    Fair value of plan assets at beginning of year.......           209,396
    Actual return on plan assets.........................            24,713
    Employer contributions...............................             7,882
    Benefits paid........................................           (16,758)
                                                               ----------------
    Fair value of plan assets at end of year.............           225,233
                                                               ----------------

Funded status............................................           (19,156)
Unrecognized net actuarial loss..........................            34,135
Unrecognized prior service credit........................           (36,576)
                                                               ----------------
Accrued benefit cost.....................................        $  (21,597)
                                                               ================


      The  allocation  of the purchase  price to the assets and  liabilities  of
Transco and TEC based on their  estimated fair values  resulted in the recording
of an additional pension liability of $19.2 million,  $17.3 million of which was
recorded  by  Transco,  representing  the  amount  that  the  projected  benefit
obligation  exceeded the plan assets.  The amounts of pension costs  deferred at
December 31, 1999 and 1998 are $6.8 million and $6.9 million,  respectively, and
are expected to be  recovered  through  future rates over the average  remaining
service period for active employees.

      The following  table presents the net pension expense for the Transco Plan
for the years ended December 31, 1998 and 1997 (in thousands):

<TABLE>
<CAPTION>
                                                                 1998           1997
                                                              -----------    -----------

<S>                                                            <C>            <C>
Components of net periodic pension expense
    Service cost.......................................        $  7,055       $  6,212
    Interest cost......................................          16,499         15,808
    Expected return on plan assets.....................         (18,991)       (16,487)
    Amortization of prior service credit...............          (2,839)          (373)
    Recognized net actuarial loss......................           1,790             77
    Regulatory asset deferral..........................            (454)           (47)
                                                              -----------     ----------
    Net periodic pension expense.......................        $  3,060       $  5,190
                                                              ===========    ===========
</TABLE>

      The  weighted-average  assumptions used to determine the projected benefit
obligation  for 1998 were a discount  rate of 7 percent,  an expected  return on
plan assets of 10 percent and a rate of compensation increase of 5 percent.
<PAGE>

      POSTRETIREMENT BENEFITS OTHER THAN PENSIONS Transco participates in a plan
with Williams and its  subsidiaries  that provides  certain health care and life
insurance  benefits  for retired  employees  of Transco that were hired prior to
January 1, 1996.  The accounting for the plan  anticipates  future  cost-sharing
changes to the written plan that are consistent with Williams'  expressed intent
to increase  the retiree  contribution  rate  annually,  generally  in line with
health care cost increases.  Cash  contributions  totaled $11.1 million in 1999,
$10.3  million  in 1998  and $6.8  million  in 1997.  Although  the  actuarially
determined cash  contributions for each of the three years were comparable,  the
timing of the actual contributions caused a variance between years.

      The  allocation  of the purchase  price to the assets and  liabilities  of
Transco and TEC based on their  estimated fair values  resulted in the recording
of a postretirement  benefits liability of $86.9 million representing the amount
that the accumulated postretirement benefit obligation exceeded the plan assets.
The amounts of  postretirement  benefits costs deferred as a regulatory asset at
December 31, 1999 and 1998 are $48.8  million and $54.7  million,  respectively,
and are  expected  to be  recovered  through  future  rates  over the  remaining
amortization period of the unrecognized transition obligation.

      DEFINED-CONTRIBUTION  PLAN  Transco  employees  participate  in a Williams
defined-contribution  plan.  Compensation expense of $4.7 million,  $4.6 million
and $3.6 million was recognized by Transco in 1999, 1998 and 1997, respectively.

      EMPLOYEE  STOCK-BASED  AWARDS  Williams has several  plans  providing  for
common  stock-based  awards to its employees and employees of its  subsidiaries.
The plans  permit the  granting of various  types of awards  including,  but not
limited to, stock  options,  stock  appreciation  rights,  restricted  stock and
deferred stock.  Awards may be granted for no consideration other than prior and
future  services  or  based  on  certain  financial  performance  targets  being
achieved.  The purchase  price per share for stock  options may not be less than
the market price of the  underlying  stock on the date of grant.  Stock  options
generally become exercisable after five years, subject to accelerated vesting if
certain  future stock prices are achieved.  Stock options expire ten years after
grant.

      SFAS No. 123,  "Accounting  for Stock-Based  Compensation,"  requires that
companies  who  continue  to apply  APBO No. 25  disclose  pro forma net  income
assuming  that the  fair-value  method  in SFAS  No.  123 had  been  applied  in
measuring  compensation  cost. Pro forma net income for Transco,  beginning with
1997 employee  stock-based awards was $157.7 million,  $133.7 million and $109.4
million for 1999,  1998 and 1997,  respectively.  Reported net income was $161.2
million,   $135.7  million  and  $111.4   million  for  1999,   1998  and  1997,
respectively.   Pro  forma  amounts  for  1999  reflect  the   remaining   total
compensation  expense from the awards made in 1998, as these awards fully vested
in 1999 as a result of the accelerated vesting provisions. Pro forma amounts for
1998 reflect the remaining  total  compensation  expense from the awards made in
1997,  as these  awards  fully  vested  in 1998 as a result  of the  accelerated
vesting provisions.  Since compensation expense from stock options is recognized
over the future years' vesting period,  and additional awards generally are made
each year, pro forma amounts may not be representative of future years' amounts.
<PAGE>

The  following  table  reflects  stock  options  related to 1999,  1998 and 1997
(options in thousands):
<TABLE>
<CAPTION>
                                                                 1999             1998             1997
                                                            -------------    -------------    -------------

<S>                                                         <C>              <C>              <C>
Options granted...........................................         426              284              546
Weighted-average grant date fair value....................  $    11.90       $     8.19       $     5.98
Options outstanding - December 31.........................       2,301            2,055            1,987
Options exercisable - December 31.........................       2,176            1,772            1,465
</TABLE>

      The fair value of the stock  options  was  estimated  at the date of grant
using a Black-Scholes  option pricing model with the following  weighted average
assumptions:  expected  life of the stock options of  approximately  five years;
volatility of the expected  market price of Williams  common stock of 28 percent
(25  percent  in 1998 and 23 percent in 1997);  risk-free  interest  rate of 5.6
percent (5.3 percent in 1998 and 6.1 percent in 1997);  and a dividend  yield of
1.5 percent (2.0 percent in 1998 and 2.4 percent in 1997).

                                 6. INCOME TAXES

      Following is a summary of the  provision  for income taxes for 1999,  1998
and 1997 (in thousands):
<TABLE>
<CAPTION>
                                                       1999             1998              1997
                                                   -------------    --------------    -------------

<S>                                                <C>              <C>               <C>
Federal:
     Current.................................      $    30,162      $    75,422       $    68,632
     Deferred................................           57,299           (5,056)           (3,041)
                                                   -------------    --------------    -------------
                                                        87,461           70,366            65,591
                                                   -------------    --------------    -------------

State and municipal:
     Current.................................            4,041            9,588             4,991
     Deferred................................            7,418             (673)           (3,988)
                                                   -------------    --------------    -------------
                                                        11,459            8,915             1,003
                                                   -------------    --------------    -------------

Provision for income taxes...................      $    98,920      $    79,281       $    66,594
                                                   =============    ==============    =============
</TABLE>

      Following is a  reconciliation  of the  provision  for income taxes at the
federal statutory rate to the provision for income taxes (in thousands):
<TABLE>
<CAPTION>
                                                            1999              1998             1997
                                                        --------------    -------------    --------------
<S>                                                     <C>               <C>              <C>
Taxes computed by applying the federal statutory rate.  $    91,037       $    75,241      $    61,293
Reclassification of state liability...................            -                 -            3,761
State and municipal income taxes......................        7,449             5,795              652
Other, net............................................          434            (1,755)             888
                                                        --------------    -------------    --------------

Provision for income taxes............................  $    98,920       $    79,281      $    66,594
                                                        ==============    =============    ==============
</TABLE>


<PAGE>

 Significant  components of deferred income tax assets and  liabilities as
 of  December 31,  1999 and 1998 are as follows (in thousands):
<TABLE>
<CAPTION>
                                                                           1999             1998
                                                                       -------------    -------------

Deferred tax liabilities
- -------------------------
<S>                                                                    <C>              <C>
Property, plant and equipment....................................      $   902,592      $   883,706
Deferred charges.................................................           23,391           24,464
Other ...........................................................           14,099            5,422
                                                                       -------------    -------------
Total deferred tax liabilities...................................          940,082          913,592
                                                                       -------------    -------------
</TABLE>

<TABLE>
<CAPTION>
Deferred tax assets
- ---------------------
<S>                                                                    <C>              <C>
Estimated rate refund liability..................................           64,876           91,260
Accrued payroll and benefits.....................................           13,803           13,457
Other accrued liabilities........................................            4,995            7,375
Deferred state income taxes - noncurrent liabilities.............           34,766           33,435
Other noncurrent liabilities.....................................            5,562           14,275
Other ...........................................................            4,655            7,082
                                                                       -------------    -------------
Total deferred tax assets........................................          128,657          166,884
                                                                       -------------    -------------

Net deferred tax liabilities.....................................      $   811,425      $   746,708
                                                                       =============    =============
</TABLE>


                            7. FINANCIAL INSTRUMENTS

      FAIR VALUE OF FINANCIAL INSTRUMENTS The carrying amount and estimated fair
values of Transco's  financial  instruments as of December 31, 1999 and 1998 are
as follows (in thousands):
<TABLE>
<CAPTION>
                                                   Carrying Amount                     Fair Value
                                             -----------------------------    -----------------------------
                                                1999             1998            1999             1998
                                             ------------     ------------    ------------     ------------

<S>                                          <C>              <C>             <C>              <C>
Financial assets:
    Cash and short-term financial assets.    $   482,550      $   417,634     $   482,550      $   417,634
    Long-term financial assets...........         13,689                -          13,689                -
Financial liabilities:
    Long-term debt.......................        975,330          975,768         933,199          991,128
</TABLE>


      For cash and short-term  financial  assets  (advances to  affiliates),  at
variable  interest rates,  the carrying amount is a reasonable  estimate of fair
value due to the short maturity of those  instruments.  For long-term  financial
assets (advances to affiliates), the carrying amount is a reasonable estimate of
fair value because the interest rate is a variable rate.

      For Transco's  publicly  traded  long-term  debt,  estimated fair value is
based on quoted market prices at year-end.  For Transco's  private debt,  all at
variable  interest  rates,  estimated  fair value is  equivalent to the carrying
amount.
<PAGE>

      CREDIT AND MARKET RISK As of December 31, 1999 and 1998, Transco had trade
receivables  of  $32  million  and  $14  million,   respectively.   These  trade
receivables  primarily  are due from  local  distribution  companies  and  other
pipeline companies predominantly located in the eastern United States. Transco's
credit risk  exposure  in the event of  nonperformance  by the other  parties is
limited to the face value of the receivables. No collateral is required on these
receivables.  Transco has not historically experienced significant credit losses
in connection with its trade receivables.

      Transco  sells,  with limited  recourse,  certain trade  receivables.  The
aggregate  limit under the  receivables  facilities was $100 million at December
31, 1999 and 1998.  At December 31, 1999 and 1998,  $92 million and $87 million,
respectively, of such receivables had been sold. Based on amounts outstanding at
December  31,  1999 and 1998 the  maximum  contractual  credit  loss under these
arrangements is approximately $15 million and $13 million, respectively, but the
likelihood of loss is considered to be remote.

               8. TRANSACTIONS WITH MAJOR CUSTOMERS AND AFFILIATES

      MAJOR CUSTOMERS The sales,  transportation  and storage revenues  received
from Public Service Electric and Gas Company and Consolidated  Edison Company of
New York,  Inc., the major customers of Transco,  were $131.3 million and $117.2
million in 1999,  $119.2  million and $113.9  million in 1998 and $139.3 million
and $131.8 million in 1997, respectively.

      AFFILIATES  Included in Transco's  sales and  transportation  revenues for
1999,  1998, and 1997 are revenues  applicable to sales and  transportation  for
affiliates of $106.8 million, $81.9 million and $79.2 million, respectively. The
rates charged to provide sales and transportation services to affiliates are the
same as those that are charged to similarly-situated nonaffiliated customers.

      Through  an  agency  agreement  with  Transco,   WESCO  manages  Transco's
jurisdictional  merchant gas sales.  For the years ended December 31, 1999, 1998
and 1997,  included in Transco's cost of sales is $29.5  million,  $31.0 million
and $31.4 million,  respectively,  representing agency fees billed to Transco by
WESCO under the agency agreement.

      Included in Transco's  cost of sales for 1999,  1998 and 1997 is purchased
gas cost from affiliates of $415.9  million,  $317.0 million and $405.1 million,
respectively. All gas purchases are made at market or contract prices.

      Transco has  long-term  gas  purchase  contracts  containing  either fixed
prices or variable  prices that are at a  significant  premium to the  estimated
market price. However, due to contract expirations and estimated  deliverability
declines,  Transco's  estimated  purchase  commitments  under such gas  purchase
contracts  are not  material  to  Transco's  total gas  purchases.  Furthermore,
through the agency  agreement  with  Transco,  WESCO has assumed  management  of
Transco's  merchant  sales service and, as Transco's  agent,  is at risk for any
above-spot-market gas costs that it may incur.
<PAGE>

      Also  included  in  Transco's  cost of  transportation  is  transportation
expense of $4.0  million in 1999,  $4.1 million in 1998 and $4.3 million in 1997
applicable to the  transportation  of gas by Texas Gas Transmission  Corporation
(Texas Gas), an affiliate of Transco. Texas Gas is regulated by the FERC and its
transportation rates charged to Transco are approved by the FERC.

      Williams  has a policy of charging  subsidiary  companies  for  management
services provided by the parent company and other affiliated companies. Included
in Transco's  administrative  and general  expenses for 1999, 1998 and 1997 were
$18.0 million, $15.0 million and $14.7 million, respectively, for such corporate
expenses charged by Williams. Management considers the cost of these services to
be reasonable.

      Transco has an operating  agreement  with Williams  Field  Services  (WFS)
whereby WFS, as Transco's agent,  assumed  operational  control of Transco's gas
gathering  facilities.  Included in Transco's operation and maintenance expenses
for 1999,  1998 and 1997,  are $32.0  million,  $31.4 million and $37.3 million,
respectively, charged by WFS to operate Transco's gas gathering facilities.

      In December  1999,  upon  assignment  of its 100%  equity  interest in the
Buccaneer Gas Pipeline  Company,  L.L.C.  (Buccaneer) to WGP, Transco billed WGP
$13.1 million for costs incurred on behalf of Buccaneer.

                      9. QUARTERLY INFORMATION (UNAUDITED)

      The following  summarizes  selected quarterly  financial data for 1999 and
1998 (in thousands):
<TABLE>
<CAPTION>
                                             First          Second <F1>          Third          Fourth <F2>
                                          -------------    -------------     -------------    -------------
<S>                                       <C>              <C>               <C>              <C>
1999
Operating revenues <F3>.............      $   354,123      $   389,701       $   384,209      $   415,423
Operating expenses..................          284,296          302,734           325,367          333,834
                                          -------------    -------------     -------------    -------------
Operating income <F3>...............           69,827           86,967            58,842           81,589
Interest expense....................           18,052           13,875            20,282           18,349
Other (income) and deductions, net <F3>        (5,846)          (6,536)           (8,524)         (12,534)
                                          -------------    -------------     -------------    -------------
Income before income taxes .........           57,621           79,628            47,084           75,774
Provision for income taxes..........           22,479           30,217            17,762           28,462
                                          -------------    -------------     -------------    -------------
Net income..........................      $    35,142      $    49,411       $    29,322      $    47,312
                                          =============    =============     =============    =============
</TABLE>

      Because of its rate structure and historic maintenance  schedule,  Transco
typically experiences lower operating income in the second and third quarters as
compared to the first and fourth quarters.

     <F1> Includes  an  adjustment  to the  reserve  for rate  refunds of $28.1
million of  principal  and $5.9 million of interest in  connection  with general
rate case Docket No. RP95-197.

     <F2> Includes  an  adjustment  to the  reserve  for rate  refunds of $23.4
million of  principal  and $2.6 million of interest in  connection  with general
rate case Docket No. RP97-71.

     <F3> Equity in earnings of unconsolidated  affiliates was reclassified from
operating  revenues to other income and deductions,  net, by $99 thousand,  $614
thousand and $442 thousand in the first, second and third quarter, respectively.



<PAGE>
<TABLE>
<CAPTION>

                                             First           Second <F4>         Third            Fourth
                                          -------------    -------------     ------------     -------------
<S>                                       <C>              <C>               <C>              <C>
1998
Operating revenues <F5>..............     $   339,371      $   334,246       $   324,135      $   327,384
Operating expenses..................          267,416          263,981           263,541          256,461
                                          -------------    -------------     -------------    -------------
Operating income <F5>................          71,955           70,265            60,594           70,923
Interest expense....................           22,605           22,784            23,769           22,497
Other (income) and deductions, net<F5>         (8,031)          (9,580)          (10,791)          (4,491)
                                          -------------    -------------     -------------    -------------
Income before income taxes..........           57,381           57,061            47,616           52,917
Provision for income taxes..........           21,791           21,701            18,000           17,789
                                          -------------    -------------     -------------    -------------

Net income..........................      $    35,590      $    35,360       $    29,616      $    35,128
                                          =============    =============     =============    =============
</TABLE>

     <F4> Includes an  adjustment  of $11.8  million  related to the  settlement
rates  contained in the January 1998  Stipulation  and Agreement in general rate
case Docket No. RP97-71.

     <F5>  Equity  in  earnings  (losses)  of   unconsolidated   affiliates  was
reclassified  to other  income  and  deductions,  net,  by ($4  thousand),  $194
thousand and ($2 thousand) in the first, second and third quarter, respectively.


ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
         FINANCIAL DISCLOSURE.

       None.

                                    PART III

       Since  Transco  meets the  conditions  set forth in  General  Instruction
(I)(1)(a) and (b) of Form 10-K, this information is omitted.



<PAGE>


                                     PART IV

ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K.

                                                                    PAGE
                                                                 REFERENCE TO
                                                                   1999 10-K
                                                                 ------------

A.   INDEX

     1.  FINANCIAL STATEMENTS:

         Report of Independent Auditors  -  Ernst & Young LLP           28

         Consolidated Balance Sheet as of December 31,
         1999 and 1998                                                 29-30

         Consolidated Statement of Income for the Years Ended
         December 31, 1999, 1998 and 1997                                31

         Consolidated Statement of Common Stockholder's
         Equity for the Years Ended December 31, 1999, 1998 and 1997     32

         Consolidated Statement of Cash Flows for the Years
         Ended December 31, 1999, 1998 and 1997                        33-34

         Notes to Consolidated Financial Statements                    35-59



     2.  FINANCIAL STATEMENT SCHEDULES:

         The  following  schedules  are  omitted  because of the  absence of the
         conditions under which they are required:

         I, II, III, IV, and V.

     3.  EXHIBITS:

         The  following  instruments  are  included as exhibits to this  report.
         Those exhibits below  incorporated by reference herein are indicated as
         such by the information supplied in the parenthetical thereafter. If no
         parenthetical  appears after an exhibit,  copies of the instrument have
         been included herewith.



<PAGE>


         (2)  PLAN OF ACQUISITION, REORGANIZATION ARRANGEMENT, LIQUIDATION OR
              SUCCESSION

                - Stock  Option  Agreement  dated  as of  December  12,  1994 by
                  and  between  The Williams  Companies, Inc. and Transco Energy
                  Company.  (Exhibit 3 to Transco Energy Company Schedule 14D-9
                  Commission File Number 005-19963)

         (3)  ARTICLES OF INCORPORATION AND BY-LAWS

                -   1 Second Restated Certificate of Incorporation,  as amended,
                      of Transco. (Exhibit 3.1 to Transco Form 8-K dated January
                      23, 1987 Commission File Number 1-7584)

                      a) Certificate  of  Amendment,  dated July 30,  1992,  of
                         the Second  Restated Certificate  of  Incorporation
                         (Exhibit   (10)-17(a)  to  Transco  Energy Company Form
                         10-K for 1993 Commission File Number 1-7513)

                      b) Certificate  of  Amendment,  dated  December  22,
                         1986,  of  the  Second  Restated  Certificate  of
                         Incorporation   (Exhibit  (10)-17(b)  to  Transco
                         Energy Company Form 10-K for 1993 Commission File
                         Number 1-7513)

                      c) Certificate  of Amendment,  dated August 5, 1987,
                         of   the   Second    Restated    Certificate   of
                         Incorporation   (Exhibit  (10)-17(c)  to  Transco
                         Energy Company Form 10-K for 1993 Commission File
                         Number 1-7513)

                -   2 By-Laws of Transco, as Amended  and  Restated  May 2, 1995
                      (Exhibit (3)-2  to Transco Form 10-K for 1995 Commission
                      File Number 1-7584)

         (4)  INSTRUMENTS DEFINING THE RIGHTS OF SECURITY HOLDERS, INCLUDING
              INDENTURES

                -   1 Indenture dated September 15, 1992 between Transco and
                      the Bank of New York, as Trustee  (Exhibit 4.2 to Transco
                      Form 8-K dated  September  17, 1992  Commission File
                      Number 1-7584)

                -   2 Indenture dated July 15, 1996 between  Transco and
                      Citibank,  N.A., as Trustee (Exhibit  4.1 to  Transco
                      Form S-3  dated  April 2, 1996  Transco  Registration
                      Statement No. 333-2155)

                -   3 Indenture dated January 16, 1998 between Transco and
                      Citibank,  N.A., as Trustee (Exhibit 4.1 to Transco
                      Form S-3 dated  September 8,  1997 Transco  Registration
                      Statement No. 333-27311)
<PAGE>

                -   4 Amendment  dated  January  26,  1999,  to Second  Amended
                      and  Restated  Credit Agreement  dated  as of  July  23,
                      1997  by and  among  Transco,  The  Williams Companies,
                      Inc.,  Texas  Gas  Transmission  Corporation,   Northwest
                      Pipeline Corporation, WilTel Communications,  L.L.C.,
                      Williams Holdings of Delaware, Inc. and  Citibank  N.A. as
                      agent and the Banks named  therein  (Exhibit  4(c) to The
                      Williams Companies, Inc. Form 10-K for 1998 Commission
                      File Number 1-4174)

                -   5 Second Amendment to Second Amended and Restated Credit
                      Agreement,  dated as of January 24, 2000 by and among
                      Transco,  The Williams Companies,  Inc., Texas Gas
                      Transmission  Corporation,  Northwest Pipeline Corporation
                      and Citibank N.A. as agent and the Banks named therein
                      (Exhibit 4(e) to the Williams Companies,  Inc.
                      Form 10-K for 1999 Commission File Number 1-4174)

         10)  MATERIAL CONTRACTS

                -   1 Transco Energy Company  Tran$tock Employee Stock Ownership
                      Plan (Transco Energy Company Registration Statement
                      No. 33-11721)

                -   2 Lease Agreement, dated October 5, 1981, between Transco
                      and Post Oak/Alabama, a Texas  partnership.  (Exhibit
                      (10)-7 to Transco  Energy  Company  Form 10-K for
                      1989 Commission File Number 1-7513)


        (21)  SUBSIDIARIES OF THE REGISTRANT

        (23)  CONSENT OF INDEPENDENT AUDITORS

        (24)  POWER OF ATTORNEY WITH CERTIFIED RESOLUTION

        (27)  FINANCIAL DATA SCHEDULE

     4. REPORTS ON FORM 8-K:

         None.



<PAGE>


                                   SIGNATURES

      Pursuant  to the  requirements  of Section  13 or 15(d) of the  Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned,  thereunto duly  authorized,  on this 29th day of
March, 2000.

                                                  TRANSCONTINENTAL GAS PIPE
                                                      LINE CORPORATION
                                                        (Registrant)



                                          By:  /s/ JAMES C. BOURNE
                                              ---------------------------------
                                                    James C. Bourne
                                                       Controller


      Pursuant to the requirements of the Securities  Exchange Act of 1934, this
report has been signed below on this 29th day of March,  2000,  by the following
persons on behalf of the registrant and in the capacities indicated.

            SIGNATURE             TITLE
            ---------             -----

      /s/ KEITH E. BAILEY *      Chairman of the Board
- ------------------------------
          Keith E. Bailey


 /s/ CUBA WADLINGTON, JR *       Director, President and Chief Executive Officer
- ------------------------------
     Cuba Wadlington, Jr.        (Principal Executive Officer)


      /s/ GARY D. LAUDERDALE*    Director
- ------------------------------
          Gary D. Lauderdale


     /s/ NICK A. BACILE *        Vice President  (Principal Financial Officer)
- ------------------------------
         Nick A. Bacile


      /s/ JAMES C. BOURNE *      Controller  (Principal Accounting Officer)
- ------------------------------
          James C. Bourne




* By   /s/ JAMES C. BOURNE
- ---------------------------
           James C. Bourne
           Attorney-in-fact


<PAGE>








                                                                    Exhibit (21)


                   TRANSCONTINENTAL GAS PIPE LINE CORPORATION
                                  SUBSIDIARIES



                                        % Owned                 State of
Subsidiary Name                        By Parent              Incorporation



Cardinal Operating Company               100.00                  Delaware

Cross Bay Operating Company              100.00                  Delaware

Cumberland Operating Company             100.00                  Delaware

Independence Operating Company           100.00                  Delaware

Marsh Resources, Inc.                    100.00                  Delaware

Pine Needle Operating Company            100.00                  Delaware

TGPL Enterprises, Inc.                   100.00                  Delaware

Transco Cross Bay Company                100.00                  Delaware

TransCardinal Company                    100.00                  Delaware

TransCarolina LNG Company                100.00                  Delaware

TransCumberland Pipeline Company         100.00                  Delaware

Transco Independence Pipeline Company    100.00                  Delaware

WGP Enterprises, Inc.                    100.00                  Delaware

Williams Gas Processing -
   Gulf Coast Company, L.P.               99.00                  Delaware












                                                                      Exhibit 23


                         Consent of Independent Auditors

We consent to the incorporation by reference in the Registration Statement (Form
S-3 No.  333-27311) of  Transcontinental  Gas Pipe Line  Corporation  and in the
related  Prospectus of our report dated  February 17, 2000,  with respect to the
consolidated  financial statements of Transcontinental Gas Pipe Line Corporation
included in this Annual Report (Form 10-K) for the year ended December 31, 1999.



                                                           /s/ ERNST & YOUNG LLP

Tulsa, Oklahoma
March 27, 2000


<PAGE>






                                                                    Exhibit (24)


                   TRANSCONTINENTAL GAS PIPE LINE CORPORATION

                                POWER OF ATTORNEY

                  KNOW ALL MEN BY THESE  PRESENTS  that each of the  undersigned
individuals, in their capacity as a director or officer, or both, as hereinafter
set forth below their signature,  of TRANSCONTINENTAL GAS PIPE LINE CORPORATION,
a Delaware corporation  ("Transco"),  does hereby constitute and appoint NICK A.
BACILE AND JAMES C.  BOURNE  their true and  lawful  attorneys  and each of them
(with full power to act without the other) their true and lawful  attorneys  for
them and in their name and in their capacity as a director or officer,  or both,
of Transco,  as hereinafter set forth below their  signature,  to sign Transco's
Annual  Report to the  Securities  and Exchange  Commission on Form 10-K for the
fiscal year ended December 31, 1999,  and any and all amendments  thereto or all
instruments necessary or incidental in connection therewith; and

                  THAT  the  undersigned  Transco  does  hereby  constitute  and
appoint  NICK A.  BACILE AND JAMES C. BOURNE its true and lawful  attorneys  and
each of them  (with  full  power to act  without  the other) its true and lawful
attorney for it and in its name and on its behalf to sign said Form 10-K and any
and all amendments  thereto and any and all instruments  necessary or incidental
in connection therewith.

                  Each of said attorneys  shall have full power of  substitution
and  resubstitution,  and  said  attorneys  or any  of  them  or any  substitute
appointed by any of them hereunder shall have full power and authority to do and
perform  in the name and on  behalf of each of the  undersigned,  in any and all
capacities,  every  act  whatsoever  requisite  or  necessary  to be done in the
premises,  as fully to all intents and purposes as each of the undersigned might
or could do in person,  the undersigned  hereby ratifying and approving the acts
of said attorneys or any of them or of any such substitute pursuant hereto.

                  IN  WITNESS  WHEREOF,   the  undersigned  have  executed  this
instrument, all as of the 18th day of February, 2000.


       /s/ Cuba Wadlington, Jr.                    /s/ Nick A. Bacile
       ---------------------------                 ----------------------------
           Cuba Wadlington, Jr.                        Nick A. Bacile
       President, Chief Executive                    Vice President and
           Officer, and Director                   Chief Financial Officer
       (Principal Financial Officer)            (Principal Executive Officer)


                               /s/ James C. Bourne
                               -----------------------
                                   James C. Bourne
                                      Controller
                            (Principal Accounting Officer)
<PAGE>


       /s/ Keith E. Bailey                           /s/ Gary D. Lauderdale
       ---------------------------                   --------------------------
           Keith E. Bailey                               Gary D. Lauderdale
               Director                                        Director




                                     TRANSCONTINENTAL GAS PIPE LINE CORPORATION



                                                   By /s/ Nick A. Bacile
                                                      -------------------------
                                                          Nick A. Bacile
                                                        Vice President and
                                                      Chief Financial Officer

ATTEST:



       /s/ Shawna L. Gehres
       --------------------------
           Shawna L. Gehres
               Secretary

<PAGE>


                   TRANSCONTINENTAL GAS PIPE LINE CORPORATION


                  I,  the   undersigned,   Shawna  L.   Gehres,   Secretary   of
TRANSCONTINENTAL  GAS PIPE LINE  CORPORATION,  a Delaware  company  (hereinafter
called the "Company"),  do hereby certify that pursuant to Section 141(f) of the
General Corporation Law of Delaware,  the Board of Directors of this Corporation
unanimously consented, as of February 18, 2000, to the following:

                                    RESOLVED that the Chairman of the Board, the
                  President or any Vice President of the Company be, and each of
                  them hereby is, authorized and empowered to execute a Power of
                  Attorney for use in connection  with the execution and filing,
                  for  and  on  behalf  of the  Company,  under  the  Securities
                  Exchange Act of 1934, of the  Company's  Annual Report on Form
                  10-K for the fiscal year ended December 31, 2000.

                  I further  certify that the foregoing  resolution has not been
modified, revoked or rescinded and is in full force and effect.

         IN  WITNESS  WHEROF,  I have  hereunto  set my  hand  and  affixed  the
corporate seal of  TRANSCONTINENTAL  GAS PIPE LINE  CORPORATION this 18th day of
February, 2000.


                                                      /s/ Shawna L. Gehres
                                                      -------------------------
                                                          Shawna L. Gehres
                                                             Secretary




[CORPORATE SEAL]




























<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED BALANCE SHEET AND THE CONDENSED CONSOLIDATED STATEMENT OF
INCOME FOR THE TWELVE MONTHS ENDED DECEMBER 31, 1999, CONTAINED IN
TRANSCONTINENTAL GAS PIPE LINE CORPORATION'S 1999 FORM 10-K AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               DEC-31-1999
<CASH>                                             843
<SECURITIES>                                         0
<RECEIVABLES>                                   31,843
<ALLOWANCES>                                         0
<INVENTORY>                                     77,200
<CURRENT-ASSETS>                               752,022
<PP&E>                                       4,452,101
<DEPRECIATION>                                 791,061
<TOTAL-ASSETS>                               4,659,180
<CURRENT-LIABILITIES>                          457,219
<BONDS>                                        975,330
                                0
                                          0
<COMMON>                                             0
<OTHER-SE>                                   2,223,228
<TOTAL-LIABILITY-AND-EQUITY>                 4,659,180
<SALES>                                        703,028
<TOTAL-REVENUES>                             1,543,456
<CGS>                                          702,884
<TOTAL-COSTS>                                1,110,603
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              70,558
<INCOME-PRETAX>                                260,107
<INCOME-TAX>                                    98,920
<INCOME-CONTINUING>                            161,187
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   161,187
<EPS-BASIC>                                          0
<EPS-DILUTED>                                        0


</TABLE>


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