4.     RATES AND CHARGES
(a)     The charges to be paid by Customer, as set forth in paragraph (b)
below, shall be mutually agreed to by Caledonia.
   
(b)     For all storage service rendered under this AISS Rate Schedule,
Customer shall pay Caledonia each Month service is offered, the charges as set
forth below or other mutually agreed upon charges.
   
(i)     Capacity Charge.  A charge, as set forth in Exhibit A of Customer s
AISS Service Agreement, for each Dth of Customer s Maximum Advanced
Interruptible Storage Capacity (if a reservation fee is charged), or
Customer s Advanced Interruptible Storage Balance (if a volumetric fee is
charged), as the case may be.  The charge may be on a daily, monthly, or other
basis per agreement between Customer and Caledonia.
   
(ii)     Injection Charge.  A charge, as set forth in Exhibit A of Customer s
AISS Service Agreement, for each Dth injected up to the ADIQ by Caledonia for
Customer s account on each Day of a given Month.
   
(iii)     Withdrawal Charge.  A charge, as set forth in Exhibit A of
Customer s AISS Service Agreement, for each Dth of Gas withdrawn up to the
ADWQ by Caledonia for Customer s account on each Day of a given
Month.
   
(iv)     Authorized Overrun Injection Charge.  A charge, as set forth in
Exhibit A of Customer s AISS Service Agreement, for each Dth of Gas injected
in excess of Customer s ADIQ on each Day of a given
Month.
   
(v)     Authorized Overrun Withdrawal Charge.  A charge, as set forth in
Exhibit A of Customer s AISS Service Agreement, for each Dth of Gas withdrawn
in excess of Customer s ADWQ on each Day of a given Month.
   
   
(vi)     Fuel Reimbursement.  The percentage of Customer s Gas tendered for
injection which is retained by Caledonia as reimbursement for fuel used in the
provision of service and lost and unaccounted for gas as set forth in Section
11 of the General Terms and Conditions of this Tariff and Exhibit A of
Customer s AISS Service Agreement.
   
     (c)     Customer shall reimburse Caledonia for all fees, charges and
surcharges, as required by the Commission or any other regulatory body, that
are related to service provided under this AISS Rate
Schedule.