"Please confirm for me that under 6502, there is a 10 year time period to collect the tax from the time the liability was assessed. In this instance, late 2013 meaning the time to collect expires soon."

Did you see the assessment date on the transcript? What other notes and codes are listed there? Do you need a transcript for each individual (are they no longer joint)? See this topic:

https://proconnect.intuit.com/community/tax-talk/discussion/csed-and-10-year-period/00/234147