Columbia Energy Group Watch

from 35-CERT 1 page <page> Exhibit 1 Columbia Insurance Corporation Ltd. Interim Report Rule 24 File No. 70-8905 Description of Current Business Written Trhough: 6/30/02 <table> <caption> All Risk Property Period Per Occ/ Aggregate Deductible Fronting Carrier <s> <c> <c> <c> 6/30/96-97 $500,000-$650,000/$3mm $100,000-250,000 Arkwright 6/30/97-98 $500,000-$650,000/$3mm $100,000-250,000 Arkwright 6/30/98-99 $500,000-$650,000/$3mm $100,000-250,000 Hartford Steam Boiler 6/30/99-7/1/00 $500,000-$650,000/$3mm $100,000-250,000 Hartford Steam Boiler 7/1/00-01 $500,000-$650,000/$3mm $100,000-250,000 Hartford Steam Boiler 7/1/01-02 $500,000-$650,000/$3mm $100,000-250,000 Aegis General/Auto Liability Layer/Per Occ/Agg Limit Attachment Fronting Carrier 7/1/96-97 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/97-98 Primary US$800,000/3,800,000* $200,000 Aegis Excess US$1,000,000/1,500,000* $1,000,000 Aegis 7/1/98-99 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/99-00 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/00-01 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/01-02 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis Long-Term Disability Period Per Occ/ Aggregate Deductible Fronting Carrier 1/1/99-00 Unlimited/$7.0mm $0 Wausau 1/1/00-01 Unlimited/$10.2mm $0 Liberty Mutual 1/1/01-7/1/01 Unlimited/$4.6mm $0 Liberty Mutual 7/1/01-02 Unlimited/$2.78mm $0 Unum/Provident </Table> * Limits for the 1997/98 Reinsurance Were Changed Retroactively. There Was No Change in 1998-99 Limits

from 35-CERT 1 page <page> Columbia Insurance Corporation, Ltd. Exhibit 1 Interim Report Rule 24 - File No. 70-8905 Description of Current Business Written Through: 12/31/01 All Risk Property <table> <caption> Period Per Occ/ Aggregate Deductible Fronter <s> <c> <c> <c> 6/30/96-97 $500,000-$650,000/$3mm $100,000-250,000 Arkwright 6/30/97-98 $500,000-$650,000/$3mm $100,000-250,000 Arkwright 6/30/98-99 $500,000-$650,000/$3mm $100,000-250,000 Hartford Steam Boiler 6/30/99-7/1/00 $500,000-$650,000/$3mm $100,000-250,000 Hartford Steam Boiler 7/1/00-01 $500,000-$650,000/$3mm $100,000-250,000 Hartford Steam Boiler 7/1/01-02 $500,000-$650,000/$3mm $100,000-250,000 Aegis </Table> General/Auto Liability <table> <caption> Layer/Per Occ/Agg Limit Attachment Fronter <s> <c> <c> <c> 7/1/96-97 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/97-98 Primary US$800,000/3,800,000* $200,000 Aegis Excess US$1,000,000/1,500,000* $1,000,000 Aegis 7/1/98-99 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/99-00 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/00-01 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/00-01 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis </Table> <table> <caption> Period Per Occ/ Aggregate Deductible Fronter <s> <c> <c> <c> 1/1/99-00 Unlimited/$7.0mm $0 Wausau 1/1/00-01 Unlimited/$10.2mm $0 Liberty Mutual 1/1/01-7/1/01 Unlimited/$4.6mm $0 Liberty Mutual 7/1/01-02 Unlimited/$2.8mm $0 Unum/Provident </Table> * Limits for the 1997/98 Reinsurance Were Changed Retroactively. There Was No Change in 1998-99 Limits

from 35-CERT 1 page <page> 1 Columbia Insurance Corporation, Ltd. Exhibit 1 Interim Report Rule 24 - File No. 70-8905 Description of Current Business Written Through: 6/30/01 <table> <caption> All Risk Property - Period Per Occ/ Aggregate Deductible Fronter <s> <c> <c> <c> 6/30/96-97 $500,000-$650,000/$3mm $100,000-250,000 Arkwright 6/30/97-98 $500,000-$650,000/$3mm $100,000-250,000 Arkwright 6/30/98-99 $500,000-$650,000/$3mm $100,000-250,000 Hartford Steam Boiler 6/30/99-00 $500,000-$650,000/$3mm $100,000-250,000 Hartford Steam Boiler 6/30/00-01 $500,000-$650,000/$3mm $100,000-250,000 Hartford Steam Boiler <caption> General/Auto Liability - Layer/Per Occ/Agg Limit Attachment Fronter <c> <c> <c> <c> 7/1/96-97 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/97-98 Primary US$800,000/3,800,000* $200,000 Aegis Excess US$1,000,000/1,500,000* $1,000,000 Aegis 7/1/98-99 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/99-00 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/00-01 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis <caption> Long-Term Disability - Period Per Occ/ Aggregate Deductible Fronter <c> <c> <c> <c> 1/1/99-00 Unlimited/$7.0mm $0 Wausau 1/1/00-01 Unlimited/$10.2mm $0 Liberty Mutual 1/1/01-7/1/01 Unlimited/$4.6mm $0 Liberty Mutual </Table> * Limits for the 1997/98 Reinsurance Were Changed Retroactively. There Was No Change in 1998-99 Limits

from 35-CERT 1 page <page> 1 Columbia Insurance Corporation Ltd. Exhibit 1 Interim Report Rule 24 - File No. 70-8905 Description of Current Business Written Through: 12/31/00 <table> <caption> All Risk Property Limits Front Period Per Occ/ Aggregate Deductible Fronter Company <s> <c> <c> <c> 6/30/96-97 $500,000-$650,000/$3mm $100,000-250,000 Arkwright 6/30/97-98 $5000,000-$650,000,000/$3mm $100,000-250,000 Arkwright 6/30/98-99 $500,000-$650,000/$3mm $100,000-250,000 Hartford Steam Boiler 6/30/99-00 $500,000-$650,000/$3mm $100,000-250,000 Hartford Steam Boiler 6/30/00-01 $500,000-$650,000/$3mm $100,000-250,000 Hartford Steam Boiler </Table> <table> <caption> General/Auto Liability Layer Per Occ/Agg Limit Attachment Fronter <s> <c> <c> <c> <c> 7/1/96-97 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/97-98 Primary US$800,000/3,800,000* $200,000 Aegis Excess US$1,000,000/1,500,000* $1,000,000 Aegis 7/1/98-99 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/99-00 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis 7/1/00-01 Primary US$800,000/3,000,000 $200,000 Aegis Excess US$1,000,000/1,000,000 $1,000,000 Aegis </Table> <page> 2 Exhibit 1 Columbia Insurance Corporation, Ltd. Interim Report Rule 24 - File No. 70-8905 Description of Current Business Written Through: 12/31/00 * Limits for the 1997/98 Reinsurance Were Changed Retroactively. There Was No Change in 1998-99 Limits

from U5S ~20 pages Amended & Restated of the By-Laws of Columbia Ener

from U5S 1 page Certificate of Incorporation of Energy.com

from U5S/A ~20 pages Underwriting agreement

from U5S/A 1 page Certificate of Amendment Dated January 16, 1998

from S-3/A ~20 pages Form of Underwriting Agreement

from T-3 1 page <page> 1 Exhibit 1 Affiliates of the Columbia Gas System, Inc.** - Columbia Atlantic Trading Corporation Columbia Coal Gasification Corporation Columbia Gas Development Corporation Columbia Gas of Kentucky, Inc. Columbia Gas of Maryland, Inc. Columbia Gas of Ohio, Inc. Columbia Gas of Pennsylvania, Inc. Columbia Gas System Service Corporation Columbia Gas Transmission Corporation Columbia Gulf Transmission Company Overthrust Pipeline Company (18%) Trailblazer Pipeline Company (33%) Columbia Lng Corporation (91.8%) Clng Corporation Cove Point Lng Limited Partnership (50%) Columbia Natural Resources, Inc. Columbia Propane Corporation Commonwealth Gas Services, Inc. Commonwealth Propane, Inc. Atlantic Energy, Inc. (50%) Columbia Energy Services Corporation Columbia Energy Marketing Tristar Capital Corporation Tristar Gas Technologies, Inc. Enertek Partners, L.P. (16.1%) Tristar Ventures Corporation Tristar Pedrick General Corporation Pedricktown Cogeneration Ltd. (15%) Tristar Pedrick Limited Corporation Pedricktown Cogeneration Ltd. (35%) Tristar Fuel Cells Corporation Tristar Binghamton General Corporation Binghamton Cogeneration Ltd (10%) Tristar Georgetown General Corporation Georgetown Cogeneration Ltd. (1%) Tristar Georgetown Limited Corporation Georgetown Cogeneration Ltd. (49%) Tristar Vineland General Corporation Vineland Cogeneration Ltd. (5%) Tristar Vineland Limited Corporation Vineland Cogeneration Limited Partnership (45%) Tristar Rumford Limited Corporation Rumford Cogeneration Company (10.2%) Tristar System, Inc. Tristar Ten Corporation (Inactive Company) Cogeneration Partners of America (50%) Provided for Information Purposes Only. the Applicant Disclaims Any Conclusion That the Indicated Entities Are "Affiliates" of the Applicant Within the Meaning of the Federal Securities Laws. - ** Ownership of 100% of Common Stock or Partnership Interests Unless Otherwise Indicated