Rio Vista has been billed as follows for the professional services of Burton McCumber & Cortez, L.L.P. rendered during the years ended December 31, 2005 and 2006:

1. Represents fees billed for tax compliance, tax advice and tax planning services.
2. Represents fees related to the Mexican subsidiaries.
3. Represents fees related to the Restated LPG Asset Sale.

The General Partner’s audit committee approves the engagement of its independent auditor to perform audit related services.  The audit committee does not formally approve specific amounts to be spent on non-audit related services which in the aggregate do not exceed amounts to be spent on audit related services.  In determining the reasonableness of audit fees, the audit committee considers historical amounts paid and the scope of services to be performed.