Dominion Transmission, Inc.

Third Revised Volume No. 1

Effective Date: 09/01/2001, Docket: RP00-344-001, Status: Effective

First Revised Sheet No. 507 First Revised Sheet No. 507 : Effective

Superseding: Original Sheet No. 507

ISS RATE SCHEDULE

Interruptible Storage Service

8. AUTHORIZED OVERRUNS

8.1 Customer may request Pipeline to inject for storage

quantities of gas on any Day in excess of the MDIQ or to

withdraw quantities of gas from storage on any Day in excess

of the MDWQ. Pipeline may consent to do so on an

interruptible basis, if in Pipeline's sole discretion,

Pipeline can perform the requested overrun service with no

adverse effect on Pipeline's current or future operations or

its ability to meet all other service obligations. Customer

may not withdraw gas in excess of its remaining Storage Gas

Balance.

8.2 For authorized overruns pursuant to this Section 8, Customer

shall pay the applicable rates specified in Section 4,

above.

9. UNAUTHORIZED OVERRUNS

9.1 Daily Injection Overruns. If Customer tenders to Pipeline

for injection on any Day quantities of gas in excess of the

MDIQ that are not authorized in accordance with Section 8,

above, then Customer shall pay Pipeline a Daily Injection

Unauthorized Overrun Charge as set forth on sheet No. 39 and

the associated fuel retention percentage for each Dt of such

unauthorized injections.

9.2 Storage Capacity Overruns. If Customer's Storage Gas

Balance at any time exceeds the MSQ, Customer shall have 24

hours after notice by Pipeline to adjust injections and

withdrawals such that Customer's Storage Gas Balance is

equal to or less than the MSQ. If Customer fails to make

such adjustments within such 24 hour period, Customer shall

pay Pipeline each Day the Storage Gas Balance Unauthorized

Overrun Charge as set forth on Sheet No. 39 and the

associated fuel retention percentage for each Dt of

Customer's Storage Gas Balance which exceeds the MSQ, until

Customer has made the required adjustments.