| Clay Basin Inventory As of juLY 3, 2008 |
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| CLAY BASIN STORAGE RESERVOIR INVENTORY | |
| Total Clay Basin annual working gas | *51,386,250 Dth |
| Total Clay Basin reservoir inventory | *22,337,514 Dth |
| Park and Loan inventory ( included in total inventory) | -310,001 Dth |
| Interruptible inventory ( included in total inventory) | 541,258 Dth |
| Percent of reservoir working gas | 43.47% |
| 2007 CLAY BASIN COMPARISON | |
| Total Clay Basin reservoir inventory (Ending July 2007 ) | *33,344,629 Dth |
| Percent of reservoir working gas | 64.89% |
| CLAY BASIN INJECTION CAPACITY | |
| Estimated current daily injection capacity | 350,000 Dth |
| Estimated current daily Park/ Loan injection capacity | 25,000 Dth |
| Total current daily injection capacity | 375,000 Dth |
| CLAY BASIN WITHDRAWAL CAPACITY | |
| Estimated current daily withdrawal capacity | 460,000 Dth |
| Withdrawal on QPC is limited to | 280,000 Dth |
| NOTE: Estimated daily pipeline capacities will vary due to various operational conditions. | |
| NOTE: * DOES NOT INCLUDE QPC'S FIRM STORAGE BALANCING ACCOUNT | |
| Last Updated on 07/04/2008 By Questar ABT 801-324-2672 |
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