Common use of Pricing Grid Clause in Contracts

Pricing Grid. If the Level The Facility The Eurodollar The Base Rate The Utilization Status Is Fee Rate is: Margin is: Margin is: Fee Rate is: _______________________________________________________________________________ Level I 0.060% 0.340% 0.000% 0.100% Status _______________________________________________________________________________ Level II 0.070% 0.380% 0.000% 0.100% Status _______________________________________________________________________________ Level III 0.080% 0.470% 0.000% 0.100% Status _______________________________________________________________________________ Level IV 0.100% 0.550% 0.000% 0.100% Status _______________________________________________________________________________ Level V 0.125% 0.675% 0.000% 0.125% Status _______________________________________________________________________________ Level VI 0.175% 0.825% 0.000% 0.125% Status _______________________________________________________________________________ Each change in a rating shall be effective as of the date it is announced by the applicable rating agency. In the event that the Moody's Rating and the S&P Rating fall in consecutive Levels, xxx xxxing falling in the higher Level (with Level I being the highest Level and Level VI being the lowest Level) shall govern for purposes of determining the applicable pricing pursuant to the above pricing grid. In the event that the Moody's Rating and the S&P Rating fall in non-consecutive Levexx, xxx Level immediately below the Level in which the higher rating falls shall govern for purposes of determining the applicable pricing pursuant to the above pricing grid. If at any time the Borrower has no Moody's Rating or no S&P Rating, the remaining rating shall apxxx xxxess the Borrower has neither a Moody's Rating nor a S&P Rating, in which case Level VI shall xxxxx. SCHEDULE 2 INITIAL COMMITMENTS Lender Initial Commitment ___________________________________________________________ ABN AMRO Bank N.V. 40,000,000 ___________________________________________________________ JP Morgan Chase Bank 40,000,000 ___________________________________________________________ The Bank of New York 26,670,000 ___________________________________________________________ KeyBank National Association 26,670,000 ___________________________________________________________ Wachovia Bank, N.A. 26,670,000 ___________________________________________________________ The Bank of Tokyo-Mitsubishi, Ltd. 23,780,000 Chicago Branch ___________________________________________________________ Mizuho Corporate Bank, Ltd. 23,780,000 ___________________________________________________________ The Royal Bank of Scotland plc 23,780,000 ___________________________________________________________ Landesbank Sachsen Girozentrale 23,780,000 ___________________________________________________________ Societe Generale 23,780,000 ___________________________________________________________ UFJ Bank Limited 23,780,000 ___________________________________________________________ Sumitomo Mitsui Banking Corporation 17,780,000 ___________________________________________________________ Banco Bilbao Vizcaya Argentaria S.A. 13,330,000 ___________________________________________________________ The Northern Trust Company 13,330,000 ___________________________________________________________ Wells Fargo Bank, National Association 13,330,000 ___________________________________________________________ Banca di Roma - Chicago Branch 11,110,000 ___________________________________________________________ Fifth Third Bank (Chicago), a 6,670,000 Michigan Banking Corporation ___________________________________________________________ KBC Bank N.V. 6,670,000 ___________________________________________________________ Malayan Banking Berhad Bank 6,670,000 ___________________________________________________________ U.S. Bank National Association 6,670,000 ___________________________________________________________ Seaway National Bank of Chicago 1,750,000 ___________________________________________________________ ADMINISTRATIVE AGENT'S NOTICE AND PAYMENT INFORMATION Loan Repayments, Interest, Fees: ABN AMRO Bank N.V. New York, NY ABA # 026009580 F/O ABN AMRO Bank, N.V. Chicago Branch CPU Account # 000-000-1789-41 Reference: Agency Services / Nicor Gas Letters of Credit: ABN AMRO Bank N.V. New York, NY ABA # 026009580 F/O ABN AMRO Bank N.V. Chicago Trade Services CPU Acxxxxx # 055-001-1711-41 Reference: Agency Services / Nicor Gas Part B - Notices Notices related to commitments, covenants or extensions of expiry/termination dates: ABN AMRO Bank N.V. 540 West Madison Street, 21st Floor Chicago, IL 60661-2591 Atxx: Xxxxxx Xxxxxxxx X-Xxxx: xxxxxx.xxxxx@xxxxxxx.xxx XXX: 312-601-3611 ABN AMRO Bank N.V. 000 Xxxx Xxxxxxx Xxxxxt, 26th Xxxxx Xxxxxgo, IL 60661-2591 Atxx: Xxxxxx Xxxxxxxxxxxxxx X-Xxxx: xxxxxxx.xxxx@xxxxxxx.xxx FAX: 312-992-5111 ABN AMRO Bank N.V. 0000 Xxxx Xxx Xxxxxxx, Suite 0000 Xxxxxxx, TX 77027

Pricing Grid. If the Level The Facility The Eurodollar The Base Rate The Utilization Status Is Fee Rate is: Margin is: Margin is: Fee Rate is: ________________________________________________________________________________ Level I 0.0600.080% 0.3400.320% 0.000% 0.100% Status ________________________________________________________________________________ Level II 0.0700.090% 0.3800.360% 0.000% 0.100% Status ________________________________________________________________________________ Level III 0.0800.100% 0.4700.450% 0.000% 0.100% Status ________________________________________________________________________________ Level IV 0.1000.125% 0.5500.525% 0.000% 0.100% Status ________________________________________________________________________________ Level V 0.1250.150% 0.6750.650% 0.000% 0.125% Status ________________________________________________________________________________ Level VI 0.1750.200% 0.8250.800% 0.000% 0.125% Status ________________________________________________________________________________ Each change in a rating shall be effective as of the date it is announced by the applicable rating agency. In With respect to Nicor Gas, in the event that the Moody's Rating and the S&P Rating fall in consecutive Levels, xxx xxxing falling the ratixx xxxxing in the higher Level (with Level I being the highest Level and Level VI being the lowest Level) shall govern for purposes of determining the applicable pricing pursuant to the above pricing grid. In the event that the Moody's Rating and the S&P Rating fall in non-consecutive LevexxLevels, xxx Level immediately the Xxxxx xmmediately below the Level in which the higher rating falls shall govern for purposes of determining the applicable pricing pursuant to the above pricing grid. If at any time the Borrower Nicor Gas has no Moody's Rating or no S&P Rating, the remaining rating shall apxxx xxxess the Borrower apply unlexx Xxxxr Gas has neither a Moody's Rating nor a S&P Rating, in which case Level VI shall xxxxxapply. Xith respect to Nicor, (1) in no event may the Level from time to time applicable to Nicor be higher (with Level I being the highest Level and Level VI being the lowest Level) than the Level then applicable to Nicor Gas, and (2) if at any time Nicor Gas has no S&P Rating, Level VI shall apply. SCHEDULE 2 INITIAL COMMITMENTS Lender Initial Commitment ___________________________________________________________ ABN AMRO Bank N.V. 40,000,000 ____50,000,000 _______________________________________________________ JP Morgan Chase Bank 40,000,000 ____50,000,000 _______________________________________________________ The Bank of New York 26,670,000 ____33,330,000 _______________________________________________________ KeyBank National Association 26,670,000 ____33,330,000 _______________________________________________________ Wachovia Bank, N.A. 26,670,000 ____33,330,000 _______________________________________________________ The Bank of Tokyo-Mitsubishi, Ltd. 23,780,000 29,720,000 Chicago Branch ___________________________________________________________ Mizuho Corporate Bank, Ltd. 23,780,000 ____29,720,000 _______________________________________________________ The Royal Bank of Scotland plc 23,780,000 ____29,720,000 _______________________________________________________ Landesbank Sachsen Girozentrale 23,780,000 ____29,720,000 _______________________________________________________ Societe Generale 23,780,000 ____29,720,000 _______________________________________________________ UFJ Bank Limited 23,780,000 ____29,720,000 _______________________________________________________ Sumitomo Mitsui Banking Corporation 17,780,000 ____22,220,000 _______________________________________________________ Banco Bilbao Vizcaya Argentaria S.A. 13,330,000 ____16,670,000 _______________________________________________________ The Northern Trust Company 13,330,000 ____16,670,000 _______________________________________________________ Wells Fargo Bank, National 16,670,000 Association 13,330,000 ___________________________________________________________ Banca di Roma - Chicago Branch 11,110,000 ____13,890,000 _______________________________________________________ Fifth Third Bank (Chicago), a 6,670,000 8,330,000 Michigan Banking Corporation ___________________________________________________________ KBC Bank N.V. 6,670,000 ____8,330,000 _______________________________________________________ Malayan Banking Berhad Bank 6,670,000 ____8,330,000 _______________________________________________________ U.S. Bank National Association 6,670,000 ____8,330,000 _______________________________________________________ Seaway National Bank of Chicago 1,750,000 ____2,250,000 _______________________________________________________ ADMINISTRATIVE AGENT'S NOTICE AND PAYMENT INFORMATION Loan Repayments, Interest, Fees: ABN AMRO Bank N.V. New York, NY ABA # 026009580 F/O ABN AMRO Bank, N.V. Chicago Branch CPU Account # 000650-000001-17890000-41 00 Reference: Agency Services / Nicor & Nicor Gas Letters of Credit: ABN AMRO Bank N.V. New York, NY ABA # 026009580 F/O ABN AMRO Bank N.V. Chicago Trade Services CPU Acxxxxx Account # 055000-001000-17110711-41 Reference: Agency Services / Nicor & Nicor Gas Part B - Notices Notices related to commitments, covenants or extensions of expiry/termination dates: ABN AMRO Bank N.V. 540 West Madison Street, 21st Floor Chicago, IL 60661-2591 AtxxAttn: Xxxxxx Agenxx Xxxxxxxx X-Xxxx: xxxxxx.xxxxx@xxxxxxx.xxx XXX: 312000-601000-3611 ABN AMRO Bank N.V. 000 Xxxx 540 Wexx Xxxxxxx XxxxxtXxxxxx, 26th Xxxxx Xxxxxgo00xx Floor Cxxxxxx, IL XX 60661-2591 AtxxAttn: Xxxxxx Credxx Xxxxxxxxxxxxxx X-Xxxx: xxxxxxx.xxxx@xxxxxxx.xxx FAXXXX: 312012-992-5111 ABN AMRO Bank N.V. 0000 Xxxx 4400 Pxxx Xxx Xxxxxxx, Suite 0000 XxxxxxxXxxxx 0500 Houxxxx, TX 77027XX 00027

Pricing Grid. If the Level The Facility The Eurodollar The Base Rate The Utilization Status Is Fee Rate is: Margin is: Margin is: Fee Rate is: _______________________________________________________________________________ Level I 0.060% 0.340% 0.000% 0.100% Status _______________________________________________________________________________ Level II 0.070% 0.380% 0.000% 0.100% Status _______________________________________________________________________________ Level III 0.080% 0.470% 0.000% 0.100% Status _______________________________________________________________________________ Level IV 0.100% 0.550% 0.000% 0.100% Status _______________________________________________________________________________ Level V 0.125% 0.675% 0.000% 0.125% Status _______________________________________________________________________________ Level VI 0.175% 0.825% 0.000% 0.125% Status _______________________________________________________________________________ Each change in a rating shall be effective as of the date it is announced by the applicable rating agency. In the event that the Moody's Rating and the S&P Rating fall in consecutive Levels, xxx xxxing falling the ratxxx xxxling in the higher Level (with Level I being the highest Level and Level VI being the lowest Level) shall govern for purposes of determining the applicable pricing pursuant to the above pricing grid. In the event that the Moody's Rating and the S&P Rating fall in non-consecutive LevexxLevels, xxx Level the Xxxxx immediately below the Level in which the higher rating falls shall govern for purposes of determining the applicable pricing pursuant to the above pricing grid. If at any time the Borrower has no Moody's Rating or no S&P Rating, the remaining rating shall apxxx xxxess the apply unlxxx xxx Borrower has neither a Moody's Rating nor a S&P Rating, in which case Level VI shall xxxxxapply. SCHEDULE 2 INITIAL COMMITMENTS Lender Initial Commitment ___________________________________________________________ ABN AMRO Bank N.V. 40,000,000 ___________________________________________________________ JP Morgan Chase Bank 40,000,000 ___________________________________________________________ The Bank of New York 26,670,000 ___________________________________________________________ KeyBank National Association 26,670,000 ___________________________________________________________ Wachovia Bank, N.A. 26,670,000 ___________________________________________________________ The Bank of Tokyo-Mitsubishi, Ltd. 23,780,000 Chicago Branch ___________________________________________________________ Mizuho Corporate Bank, Ltd. 23,780,000 ___________________________________________________________ The Royal Bank of Scotland plc 23,780,000 ___________________________________________________________ Landesbank Sachsen Girozentrale 23,780,000 ___________________________________________________________ Societe Generale 23,780,000 ___________________________________________________________ UFJ Bank Limited 23,780,000 ___________________________________________________________ Sumitomo Mitsui Banking Corporation 17,780,000 ___________________________________________________________ Banco Bilbao Vizcaya Argentaria S.A. 13,330,000 ___________________________________________________________ The Northern Trust Company 13,330,000 ___________________________________________________________ Wells Fargo Bank, National Association 13,330,000 ___________________________________________________________ Banca di Roma - Chicago Branch 11,110,000 ___________________________________________________________ Fifth Third Bank (Chicago), a 6,670,000 Michigan Banking Corporation ___________________________________________________________ KBC Bank N.V. 6,670,000 ___________________________________________________________ Malayan Banking Berhad Bank 6,670,000 ___________________________________________________________ U.S. Bank National Association 6,670,000 ___________________________________________________________ Seaway National Bank of Chicago 1,750,000 ___________________________________________________________ ADMINISTRATIVE AGENT'S NOTICE AND PAYMENT INFORMATION Loan Repayments, Interest, Fees: ABN AMRO Bank N.V. New York, NY ABA # 026009580 F/O ABN AMRO Bank, N.V. Chicago Branch CPU Account # 000650-000-17890000-41 00 Reference: Agency Services / Nicor Gas Letters of Credit: ABN AMRO Bank N.V. New York, NY ABA # 026009580 F/O ABN AMRO Bank N.V. Chicago Trade Services CPU Acxxxxx Account # 055000-001000-1711-41 Reference: Agency Services / Nicor Gas Part B - Notices Notices related to commitments, covenants or extensions of expiry/termination dates: ABN AMRO Bank N.V. 540 West Madison Street, 21st Floor Chicago, IL 60661-2591 AtxxAttn: Xxxxxx Agexxx Xxxxxxxx X-Xxxx: xxxxxx.xxxxx@xxxxxxx.xxx XXX: 312000-601001-3611 ABN AMRO Bank N.V. 000 Xxxx 540 Wxxx Xxxxxxx XxxxxtXxxxxx, 26th Xxxxx Xxxxxgo00xx Floor Xxxxxxx, IL XX 60661-2591 AtxxAttn: Xxxxxx Crexxx Xxxxxxxxxxxxxx X-Xxxx: xxxxxxx.xxxx@xxxxxxx.xxx FAXXXX: 312-992-5111 ABN AMRO Bank N.V. 0000 4400 Xxxx Xxx Xxxxxxx, Suite 0000 XxxxxxxXxxxx 1500 Hoxxxxx, TX 77027XX 07027

Pricing Grid. If the Level The Facility The Eurodollar The Base Rate The Utilization Status Is Fee Rate is: Margin is: Margin is: Fee Rate is: ________________________________________________________________________________ Level I 0.0600.080% 0.3400.320% 0.000% 0.100% Status ________________________________________________________________________________ Level II 0.0700.090% 0.3800.360% 0.000% 0.100% Status ________________________________________________________________________________ Level III 0.0800.100% 0.4700.450% 0.000% 0.100% Status ________________________________________________________________________________ Level IV 0.1000.125% 0.5500.525% 0.000% 0.100% Status ________________________________________________________________________________ Level V 0.1250.150% 0.6750.650% 0.000% 0.125% Status ________________________________________________________________________________ Level VI 0.1750.200% 0.8250.800% 0.000% 0.125% Status ________________________________________________________________________________ Each change in a rating shall be effective as of the date it is announced by the applicable rating agency. In With respect to Nicor Gas, in the event that the Moody's Rating and the S&P Rating fall in consecutive Levels, xxx xxxing txx xxxxng falling in the higher Level (with Level I being the highest Level and Level VI being the lowest Level) shall govern for purposes of determining the applicable pricing pursuant to the above pricing grid. In the event that the Moody's Rating and the S&P Rating fall in non-consecutive LevexxLevelx, xxx Level immediately below the Level in which the higher rating falls shall govern for purposes of determining the applicable pricing pursuant to the above pricing grid. If at any time the Borrower Nicor Gas has no Moody's Rating or no S&P Rating, the remaining rating shall apxxx xxxess the Borrower appxx xxxxss Nicor Gas has neither a Moody's Rating nor a S&P Rating, in which case Level VI shall xxxxxaxxxx. With respect to Nicor, (1) in no event may the Level from time to time applicable to Nicor be higher (with Level I being the highest Level and Level VI being the lowest Level) than the Level then applicable to Nicor Gas, and (2) if at any time Nicor Gas has no S&P Rating, Level VI shall apply. SCHEDULE 2 INITIAL COMMITMENTS Lender Initial Commitment ___________________________________________________________ ABN AMRO Bank N.V. 40,000,000 ____50,000,000 _______________________________________________________ JP Morgan Chase Bank 40,000,000 ____50,000,000 _______________________________________________________ The Bank of New York 26,670,000 ____33,330,000 _______________________________________________________ KeyBank National Association 26,670,000 ____33,330,000 _______________________________________________________ Wachovia Bank, N.A. 26,670,000 ____33,330,000 _______________________________________________________ The Bank of Tokyo-Mitsubishi, Ltd. 23,780,000 29,720,000 Chicago Branch ___________________________________________________________ Mizuho Corporate Bank, Ltd. 23,780,000 ____29,720,000 _______________________________________________________ The Royal Bank of Scotland plc 23,780,000 ____29,720,000 _______________________________________________________ Landesbank Sachsen Girozentrale 23,780,000 ____29,720,000 _______________________________________________________ Societe Generale 23,780,000 ____29,720,000 _______________________________________________________ UFJ Bank Limited 23,780,000 ____29,720,000 _______________________________________________________ Sumitomo Mitsui Banking Corporation 17,780,000 ____22,220,000 _______________________________________________________ Banco Bilbao Vizcaya Argentaria S.A. 13,330,000 ____16,670,000 _______________________________________________________ The Northern Trust Company 13,330,000 ____16,670,000 _______________________________________________________ Wells Fargo Bank, National Association 13,330,000 ____16,670,000 Assocxxxxxn _______________________________________________________ Banca di Roma - Chicago Branch 11,110,000 ____13,890,000 _______________________________________________________ Fifth Third Bank (Chicago), a 6,670,000 8,330,000 Michigan Banking Corporation ___________________________________________________________ KBC Bank N.V. 6,670,000 ____8,330,000 _______________________________________________________ Malayan Banking Berhad Bank 6,670,000 ____8,330,000 _______________________________________________________ U.S. Bank National Association 6,670,000 ____8,330,000 _______________________________________________________ Seaway National Bank of Chicago 1,750,000 ____2,250,000 _______________________________________________________ ADMINISTRATIVE AGENT'S NOTICE AND PAYMENT INFORMATION Loan Repayments, Interest, Fees: ABN AMRO Bank N.V. New York, NY ABA # 026009580 F/O ABN AMRO Bank, N.V. Chicago Branch CPU Account # 000-000-17890789-41 Reference: Agency Services / Nicor & Nicor Gas Letters of Credit: ABN AMRO Bank N.V. New York, NY ABA # 026009580 F/O ABN AMRO Bank N.V. Chicago Trade Services CPU Acxxxxx Accxxxx # 055005-001-1711-41 Reference: Agency Services / Nicor & Nicor Gas Part B - Notices Notices related to commitments, covenants or extensions of expiry/termination dates: ABN AMRO Bank N.V. 540 West Madison Street, 21st Floor Chicago, IL 60661-2591 AtxxAttx: Xxxxxx Xxxxxxxx X-Xxxx: xxxxxx.xxxxx@xxxxxxx.xxx XXX: 312-601-3611 ABN AMRO Bank N.V. 000 Xxxx Xxxxxxx XxxxxtXxxxxx, 26th Xxxxx XxxxxgoXxxxxxo, IL 60661-2591 AtxxAttx: Xxxxxx Xxxxxxxxxxxxxx X-Xxxx: xxxxxxx.xxxx@xxxxxxx.xxx FAX: 312-992-5111 ABN AMRO Bank N.V. 0000 Xxxx Xxx Xxxxxxx, Suite 0000 1000 Xxxxxxx, TX 77027

Pricing Grid. If the Level The Facility Fee The The L/C Fee Rate The Eurodollar The Base Rate The Utilization Status Is Fee Rate is: Utilization is: Margin is: Margin is: Fee Rate is: _______________________________________________________________________________ ------------------ ------------------- ------------ ------------------- ------------------ -------------------- ------------------ ------------------- ------------ ------------------- ------------------ -------------------- Level I 0.060Status 0.100% 0.3400.100% 0.400% 0.400% 0.000% 0.100% Status _______________________________________________________________________________ ------------------ ------------------- ------------ ------------------- ------------------ -------------------- ------------------ ------------------- ------------ ------------------- ------------------ -------------------- Level II 0.070Status 0.125% 0.3800.125% 0.475% 0.475% 0.000% 0.100% Status _______________________________________________________________________________ ------------------ ------------------- ------------ ------------------- ------------------ -------------------- ------------------ ------------------- ------------ ------------------- ------------------ -------------------- Level III 0.080Status 0.150% 0.4700.150% 0.600% 0.600% 0.000% 0.100% Status _______________________________________________________________________________ ------------------ ------------------- ------------ ------------------- ------------------ -------------------- Level IV 0.100Status 0.175% 0.5500.200% 0700% 0.700% 0.000% 0.100% Status _______________________________________________________________________________ ------------------ ------------------- ------------ ------------------- ------------------ -------------------- ------------------ ------------------- ------------ ------------------- ------------------ -------------------- Level V 0.125Status 0.250% 0.6750.250% 0.750% 0.750% 0.000% 0.125% Status _______________________________________________________________________________ ------------------ ------------------- ------------ ------------------- ------------------ -------------------- ------------------ ------------------- ------------ ------------------- ------------------ -------------------- Level VI 0.175Status 0.6725% 0.8250.500% 0.0001.400% 0.1251.400% Status _______________________________________________________________________________ 0.400% ------------------ ------------------- ------------ ------------------- ------------------ -------------------- Each change in a rating shall be effective as of the date it is announced by the applicable rating agency. In the event that the Moody's Xxxxx'x Rating and the S&P Rating fall in consecutive Levels, xxx xxxing the rating falling in the higher lower Level (with Level I being the highest Level and Level VI being the lowest Level) shall govern for purposes of determining the applicable pricing pursuant to the above pricing grid. In the event that the Moody's Xxxxx'x Rating and the S&P Rating fall in non-consecutive LevexxLevels, xxx the Level immediately below above the Level in which the higher lower rating falls (with Level I being the highest Level and Level VI being the lowest Level) shall govern for purposes of determining the applicable pricing pursuant to the above pricing grid. If at any time the Borrower has no Moody's Rating or no S&P Rating, the remaining rating shall apxxx xxxess the Borrower has neither a Moody's Rating nor a S&P Rating, in which case Level VI shall xxxxx. SCHEDULE 2 INITIAL COMMITMENTS Lender Initial Commitment ___________________________________________________1 TO COMPLIANCE CERTIFICATE Compliance Calculations for Credit Agreement CALCULATION AS OF ________ ABN AMRO Bank N.V. 40,000,000 __________________________________________________________,200_ JP Morgan Chase Bank 40,000,000 ___________________________________________________________ The Bank of New York 26,670,000 ___________________________________________________________ KeyBank National Association 26,670,000 ___________________________________________________________ Wachovia Bank, N.A. 26,670,000 ___________________________________________________________ The Bank of Tokyo-Mitsubishi, Ltd. 23,780,000 Chicago Branch ___________________________________________________________ Mizuho Corporate Bank, Ltd. 23,780,000 ___________________________________________________________ The Royal Bank of Scotland plc 23,780,000 ___________________________________________________________ Landesbank Sachsen Girozentrale 23,780,000 ___________________________________________________________ Societe Generale 23,780,000 ___________________________________________________________ UFJ Bank Limited 23,780,000 ___________________________________________________________ Sumitomo Mitsui Banking Corporation 17,780,000 ___________________________________________________________ Banco Bilbao Vizcaya Argentaria S.A. 13,330,000 ___________________________________________________________ The Northern Trust Company 13,330,000 ___________________________________________________________ Wells Fargo Bank, National Association 13,330,000 ___________________________________________________________ Banca di Roma - Chicago Branch 11,110,000 ___________________________________________________________ Fifth Third Bank ------------------------------------------------------------------ --------------------- --------------------------- A. Liens (ChicagoSec. 7.9(c), a 6,670,000 Michigan Banking Corporation ___________________________________________________________ KBC Bank N.V. 6,670,000 ___________________________________________________________ Malayan Banking Berhad Bank 6,670,000 ___________________________________________________________ U.S. Bank National Association 6,670,000 ___________________________________________________________ Seaway National Bank of Chicago 1,750,000 ___________________________________________________________ ADMINISTRATIVE AGENT'S NOTICE AND PAYMENT INFORMATION Loan Repayments(d), Interest, Fees: ABN AMRO Bank N.V. New York, NY ABA # 026009580 F/O ABN AMRO Bank, N.V. Chicago Branch CPU Account # 000-000-1789-41 Reference: Agency Services / Nicor Gas Letters of Credit: ABN AMRO Bank N.V. New York, NY ABA # 026009580 F/O ABN AMRO Bank N.V. Chicago Trade Services CPU Acxxxxx # 055-001-1711-41 Reference: Agency Services / Nicor Gas Part B - Notices Notices related to commitments, covenants or extensions of expiry/termination dates: ABN AMRO Bank N.V. 540 West Madison Street, 21st Floor Chicago, IL 60661-2591 Atxx: Xxxxxx Xxxxxxxx X-Xxxx: xxxxxx.xxxxx@xxxxxxx.xxx XXX: 312-601-3611 ABN AMRO Bank N.V. 000 Xxxx Xxxxxxx Xxxxxt, 26th Xxxxx Xxxxxgo, IL 60661-2591 Atxx: Xxxxxx Xxxxxxxxxxxxxx X-Xxxx: xxxxxxx.xxxx@xxxxxxx.xxx FAX: 312-992-5111 ABN AMRO Bank N.V. 0000 Xxxx Xxx Xxxxxxx, Suite 0000 Xxxxxxx, TX 77027and (g)) ------------------------------------------------------------------ --------------------- --------------------------- ------------------------------------------------------------------ --------------------- ---------------------------

Pricing Grid. If the Level The Facility The ============================================================================================================================= Ratio of Consolidated Total Debt to Consolidated EBITDA Eurodollar The Rate Margin Base Rate Margin Commitment Fee ----------------------------------------------------------------------------------------------------------------------------- X LESS THAN 5.5 225.0 125.0 42.5 ----------------------------------------------------------------------------------------------------------------------------- X LESS THAN= 5.5, but GREATER THAN 5.0 200.0 100.0 37.5 ----------------------------------------------------------------------------------------------------------------------------- X LESS THAN= 5.0, but GREATER THAN 4.5 162.5 62.5 37.5 ----------------------------------------------------------------------------------------------------------------------------- X LESS THAN= 4.5, but GREATER THAN 4.0 137.5 37.5 35.0 ----------------------------------------------------------------------------------------------------------------------------- X LESS THAN= 4.0, but GREATER THAN 3.5 112.5 12.5 30.0 ----------------------------------------------------------------------------------------------------------------------------- X LESS THAN= 3.5, but GREATER THAN 3.0 87.5 0.0 25.0 ----------------------------------------------------------------------------------------------------------------------------- X LESS THAN= 3.0 62.5 0.0 20.0 ============================================================================================================================= The Utilization Status Is Fee Rate is: Margin is: Margin is: Fee Rate is: _______________________________________________________________________________ Level I 0.060% 0.340% 0.000% 0.100% Status _______________________________________________________________________________ Level II 0.070% 0.380% 0.000% 0.100% Status _______________________________________________________________________________ Level III 0.080% 0.470% 0.000% 0.100% Status _______________________________________________________________________________ Level IV 0.100% 0.550% 0.000% 0.100% Status _______________________________________________________________________________ Level V 0.125% 0.675% 0.000% 0.125% Status _______________________________________________________________________________ Level VI 0.175% 0.825% 0.000% 0.125% Status _______________________________________________________________________________ Each change in a rating Applicable Margin, at any time from and including the Closing Date until the date which is six months after the Closing Date, for (a) the Tranche A Term Loans and the Revolving Loans shall be effective 1.25% as of to Base Rate Loans at such time and 2.25% as to Eurodollar Loans at such time and (b) the Commitment Fee shall be 0.50% at such time. The Applicable Margin, at all times, for Tranche B Term Loans shall be 1.75% for Base Rate Loans and 2.75% for Eurodollar Loans. The Applicable Margin, at all times, for Tranche C Term Loans shall be 2.25% for Base Rate Loans and 3.25% for Eurodollar Loans. The Applicable Margin, at all times, for Tranche D Term Loans shall be 2.75% for Base Rate Loans and 3.75% for Eurodollar Loans. The Applicable Margin, at any time from and after the date it which is announced by six months after the applicable rating agency. In the event that the Moody's Rating Closing Date, for Tranche A Term Loans, Revolving Loans and the S&P Rating fall in consecutive LevelsCommitment Fee, xxx xxxing falling in the higher Level (with Level I being the highest Level and Level VI being the lowest Level) shall govern for purposes of determining the applicable pricing be determined pursuant to the Pricing Grid above pricing gridat such time. In the event At all times that the Moody's Rating Applicable Margin is determined by reference to the Pricing Grid, "X" refers to the ratio of Consolidated Total Debt to Consolidated EBITDA, which ratio shall be determined based upon the Compliance Certificate delivered pursuant to clause (b) of Section 7.2 and shall remain in effect until such time as the next Compliance Certificate shall be delivered (and, at such time, the Applicable Margin shall change based on such next Compliance Certificate); provided, however, that, if (i) any such Compliance Certificate is not delivered to the Administrative Agent on or prior to the date required pursuant to clause (b) of Section 7.2 and (ii) such Compliance Certificate indicates a ratio of Consolidated Total Debt to Consolidated EBITDA that would result in an Applicable Margin which is greater than the Applicable Margin then in effect, then (A) such greater Applicable Margin shall be deemed to be in effect for all purposes of this Agreement from the date such Compliance Certificate was required to be delivered to the Administrative Agent pursuant to clause (b) of Section 7.2 and (B) in furtherance of the other terms of this proviso, if the Borrower shall have made any payment in respect of interest or fees during the period from the date such Compliance Certificate was required to be delivered to the actual date of delivery of such Compliance Certificate, then the Borrower shall pay in the form of a supplemental payment of interest and/or fees, an amount which equals the difference between the amount of interest and/or fees that would otherwise have been paid determined as if such Compliance Certificate was delivered on the date such Compliance Certificate was required to be delivered and the S&P Rating fall in non-consecutive Levexxamount of such interest and/or fees so paid, xxx Level immediately below which supplemental payment of interest and/or fees shall be due and payable on the Level in which the higher rating falls shall govern for purposes actual date of determining the applicable pricing pursuant to the above pricing grid. If at any time the Borrower has no Moody's Rating or no S&P Rating, the remaining rating shall apxxx xxxess the Borrower has neither a Moody's Rating nor a S&P Rating, in which case Level VI shall xxxxx. SCHEDULE 2 INITIAL COMMITMENTS Lender Initial Commitment ___________________________________________________________ ABN AMRO Bank N.V. 40,000,000 ___________________________________________________________ JP Morgan Chase Bank 40,000,000 ___________________________________________________________ The Bank delivery of New York 26,670,000 ___________________________________________________________ KeyBank National Association 26,670,000 ___________________________________________________________ Wachovia Bank, N.A. 26,670,000 ___________________________________________________________ The Bank of Tokyo-Mitsubishi, Ltd. 23,780,000 Chicago Branch ___________________________________________________________ Mizuho Corporate Bank, Ltd. 23,780,000 ___________________________________________________________ The Royal Bank of Scotland plc 23,780,000 ___________________________________________________________ Landesbank Sachsen Girozentrale 23,780,000 ___________________________________________________________ Societe Generale 23,780,000 ___________________________________________________________ UFJ Bank Limited 23,780,000 ___________________________________________________________ Sumitomo Mitsui Banking Corporation 17,780,000 ___________________________________________________________ Banco Bilbao Vizcaya Argentaria S.A. 13,330,000 ___________________________________________________________ The Northern Trust Company 13,330,000 ___________________________________________________________ Wells Fargo Bank, National Association 13,330,000 ___________________________________________________________ Banca di Roma - Chicago Branch 11,110,000 ___________________________________________________________ Fifth Third Bank (Chicago), a 6,670,000 Michigan Banking Corporation ___________________________________________________________ KBC Bank N.V. 6,670,000 ___________________________________________________________ Malayan Banking Berhad Bank 6,670,000 ___________________________________________________________ U.S. Bank National Association 6,670,000 ___________________________________________________________ Seaway National Bank of Chicago 1,750,000 ___________________________________________________________ ADMINISTRATIVE AGENT'S NOTICE AND PAYMENT INFORMATION Loan Repayments, Interest, Fees: ABN AMRO Bank N.V. New York, NY ABA # 026009580 F/O ABN AMRO Bank, N.V. Chicago Branch CPU Account # 000-000-1789-41 Reference: Agency Services / Nicor Gas Letters of Credit: ABN AMRO Bank N.V. New York, NY ABA # 026009580 F/O ABN AMRO Bank N.V. Chicago Trade Services CPU Acxxxxx # 055-001-1711-41 Reference: Agency Services / Nicor Gas Part B - Notices Notices related to commitments, covenants or extensions of expiry/termination dates: ABN AMRO Bank N.V. 540 West Madison Street, 21st Floor Chicago, IL 60661-2591 Atxx: Xxxxxx Xxxxxxxx X-Xxxx: xxxxxx.xxxxx@xxxxxxx.xxx XXX: 312-601-3611 ABN AMRO Bank N.V. 000 Xxxx Xxxxxxx Xxxxxt, 26th Xxxxx Xxxxxgo, IL 60661-2591 Atxx: Xxxxxx Xxxxxxxxxxxxxx X-Xxxx: xxxxxxx.xxxx@xxxxxxx.xxx FAX: 312-992-5111 ABN AMRO Bank N.V. 0000 Xxxx Xxx Xxxxxxx, Suite 0000 Xxxxxxx, TX 77027such Compliance Certificate.