In the magento Enterprise 1.13 issue with cleaning cache. When you clean it using admin panel cache doest not cleaned and cached files remain at the site.  The issue wasnt in the previous Magento ® Enterprise editions. For solving it was published path number 1498_EE_1.13.0.0_v1 . However if you not able to apply this patch you need make changes in filews below.
To manually apply patch you need:
1. Add the fucntion to app/code/core/Enterprise/PageCache/Model/Observer.php
2. Change Observer method in pp/code/core/Enterprise/PageCache/etc/config.xml
You may reffer to code below for changes.