Audit Log Purge Management Utility
The Audit Log Purge Management utility is only available from the Site 
> page to ensure that the audit records are purged in their entirety from one or more organizations.
> page to ensure that the audit records are purged in their entirety from one or more organizations.The Audit Log Purge Management table provides information about the purged results including the date the records were purged, the user who purged them, the date through which the records were purged, the number of records in each purge, and their related archived results.
To create a job for purging audit records, use Audit Log Purge Scheduler Utility.