1 EXHIBIT 23.2 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this Registration Statement on Form S-3 of our report included in the Annual Report on Form 10-K of Columbia Energy Group for the year ended December 31, 1999 and to all references to our firm in this Registration Statement. /s/ Arthur Andersen LLP - ----------------------- ARTHUR ANDERSEN LLP New York, New York November 3, 2000