1 Exhibit D Page 1 of 6 AGREEMENT FOR FILING CONSOLIDATED FEDERAL INCOME TAX RETURN AND FOR ALLOCATION OF LIABILITIES AND BENEFITS ARISING FROM SUCH CONSOLIDATED TAX RETURN BETWEEN COLUMBIA ENERGY GROUP AND SUBSIDIARY COMPANIES The following members...Agreement for Filing Consolidated Federal Income Tax Return and for Allocation of Liabilities and Benefits • April 28th, 2000 • Columbia Energy Group • Natural gas transmisison & distribution
