8.1.5. Non Party Custodians
8.1.5.1. Key Non Party Custodians 8.1.5.2. Tier 2 Non Party Custodians 8.1.5.3. Tier 3 Non Party Custodians 1.1.5.4.  Non Party System Generated
Description:  Non Party Custodians may possess ESI relevant to the matter, but their company or entity are not party (named) to the litigation.  Such custodians may engender much higher legal and technical costs to Preserve and Collect the ESI.