FIRST AMENDMENT TO ISSUING AND PAYING AGENCY AGREEMENT ------------------------------------------------------- This First Amendment to Issuing and Paying Agency Agreement is made this August 13, 1997 by and among State Street Bank and Trust Company ("State Street"), a Massachusetts trust company maintaining an office for purposes of this agreement at 225 Asylum Street, Hartford, Connecticut 06103, Fleet National Bank ("Fleet"), a national banking association maintaining an office at 777 Main Street, Hartford, Connecticut 06115, and Connecticut Natural Gas Corporation (the "Company"), a Connecticut corpora- tion having its principal place of business at 100 Columbus Boulevard, Hartford, Connecticut 06103. RECITALS: A. Fleet, formerly known as Shawmut Bank Connecticut, National Association, and the Company are parties to an Issuing and Paying Agency Agreement dated as of June 14, 1994 (the "Agreement") concerning the Company's Medium-Term Notes, Series B, in an aggregate principal amount not exceeding U.S. $75,000,000 (the "Notes"). B. Fleet has sold substantially all of its corporate trust operations to State Street, effective June 30, 1997. C. In connection with such sale, Fleet wishes to document its resignation as Issuing and Paying Agent under the Agreement, and State Street wishes to be appointed by the Company as the successor Issuing and Paying Agent under the Agreement. 1 D. The Company wishes to accept the resignation of Fleet and appoint State Street in its stead. E. The Company, PaineWebber Incorporated and A.G. Edwards & Sons, Inc. have this date entered into an Amended and Restated Placement Agency Agreement (the "Amended Placement Agency Agreement") modifying and replacing the Placement Agency Agreement concerning (the "Placement Agency Agreement") the Notes among Smith Barney Inc., A.G. Edwards & Sons, Inc. and the Company dated June 14, 1994. F. State Street and the Company wish to amend the Agree- ment to reflect the substitution of PaineWebber Incorporated for Smith Barney Inc. and amend the form of the Notes annexed to the Agreement as Exhibit I to reflect the changes referred to in these recitals. G. The parties hereto acknowledge and agree that each amendment of the Agreement and the Notes set forth below does not adversely affect the interests of any Holder of any of the Notes. H. Any capitalized terms not defined herein shall have the meanings attributed to them in the Agreement and the Notes. In consideration of the mutual promises hereinafter contained, Fleet, State Street and the Company hereby covenant and agree as follows: 1. Fleet hereby resigns as Issuing and Paying Agent under the Agreement. 2. The Company hereby accepts such resignation and appoints State Street as the successor Issuing and Paying Agent under the Agreement. 2 3. Fleet and the Company waive any notice requirements under the Agreement with respect to the matters referred to in Paragraphs 1 and 2 above. 4. All references in the Agreement to the Placement Agency Agreement shall be deemed references to the Amended Agency Agreement. 5. Paragraph 2 of Article V of the Agreement is deleted and the following new paragraph 2 of Article V is substituted in its place: 2. In order to preserve the exemption from registration under the Securities Act, the Notes will be issued and sold on the condition that no resale or other transfer of a Note or any interest therein will be made prior to the date that is two (2) years after the later of (a) the Original Issue Date or (b) the last date the Company or any of its affiliates was the beneficial owner of such Note unless the Note is transferred: (i) to an Agent or the Company; or (ii) through an Agent or by an Agent acting as principal to an institutional investor approved as an Accredited Investor or a Qualified Institutional Buyer by such Agent; or (iii) directly to an institutional investor approved as an Accredited Investor or a Qualified Institutional Buyer by the Company in a transaction approved by the Company; or (iv) through a dealer other than the Agents to an institutional investor approved as an Accredited Investor or a Qualified Institutional Buyer by the Company in a transaction approved by the Company; (v) directly to a Qualified Institutional Buyer in a transaction that meets the requirements of Rule 144A under the Securities Act, (vi) pursuant to an exemption from registration in accordance with Rule 144 under the Securities Act, (vii) to an institutional accredited investor acquiring the Notes pursuant to an exemption form registration provided by Regulation S under the Securities Act and (viii) pursuant to an effective registration statement under the Securities Act, subject in each case to the disposition of the purchaser's property being at all times within its control. Approval by an Agent or the Company of a transfer of a Note, to the extent required as described above, will be granted only if the transfer is made to a Qualified Institutional Buyer or an Accredited Investor and is in accordance with the other requirements applicable to an initial sale or the 3 requirements of Rule 144A under the Securities Act. Any transfer described in clause (iii), (iv), (v) or (vii) above including a transaction effectuated by or through the Depository's book-entry system requires the submission to the Issuing and Paying Agent of the certificate of transfer on the Note duly completed or a duly completed transfer instrument substantially in the form attached as Exhibit II to this Agreement. In connection with any transfer of the Notes within two years after the original issuance of the Notes, if the proposed transferee is an Accredited Investor, the holder must, prior to such transfer, furnish to the Issuing and Paying Agent and the Company such certifications, legal opinions or other information as either of them may reasonably require to confirm that such transfer is being made pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act. Notwithstanding the preceding sentence, the Issuing and Paying Agent shall not effect any transfer requested in such certificate of transfer or transfer instrument unless first receiving approval from the Company or the Company's counsel. The Issuing and Paying Agent shall provide a copy of such certificate of transfer or transfer instrument to the Company and to each Agent as soon as practicable following its receipt of such certificate of transfer or transfer instrument. The Company or the Company's counsel shall approve or disapprove (stating the reasons for any disapproval) of such transfer within one (1) Business Day after receiving such certificate of transfer or transfer instrument. In the event the Issuing and Paying Agent shall not receive such approval or disapproval within such one (1) Business Day, it shall as soon as practicable on the next succeeding Business Day request such approval or disapproval from the Company. In the further event that such approval or disapproval is not received by the Issuing and Paying Agent within two (2) Business Days after receiving such certificate of transfer or transfer instrument, then the Issuing and Paying Agent shall return the certificate of transfer or transfer instrument and any related Note or Notes for the reason that no approval of the requested transfer was received and refer the person submitting such request to the Company. If the requested transfer shall be disapproved by the Company or its counsel, the Issuing and Paying Agent shall return the certificate of transfer or transfer instrument and any related Note or Notes to the person requesting such transfer for the reason that the requested transfer has been disapproved and provide the reasons therefor. 4 6. The form of the Notes annexed to the Agreement as Exhibit I is deleted and a new Exhibit I is substituted in its place in the form annexed to this First Amendment. 7. The substitution of State Street Bank and Trust Company for Shawmut Bank Connecticut, National Association, as the Issuing and Paying Agent under the Agreement, as modified hereby, shall, for all purposes, be deemed as effective as of June 30, 1997. 8. Except as modified hereby, the Agreement shall remain in full force and effect. IN WITNESS WHEREOF, the parties hereto have caused this First Amendment to be executed by their respective corporate officers, thereunto duly authorized, as of the day and year first above written. STATE STREET BANK AND TRUST COMPANY By:_______________________________ FLEET NATIONAL BANK By:_______________________________ Its Agent, acting pursuant to a Power of Attorney of Fleet National Bank, dated June 30, 1997 CONNECTICUT NATURAL GAS CORPORATION By:________________________________ Its 5