Tier 1 investigation, scope of past TS/SCI denial

I am in the running for a nonsensitive/low-risk position (so probably a tier 1 investigation, I believe?) with a non-IC agency and am a little worried about how my past TS/SCI/FS-Poly denial from an IC agency will affect potential adjudication since I have to report it on the SF-85.

Without going into too much detail, I decided to come clean during my polygraph and admit to what were some pretty bad decisions from when I was in college (2+ years ago). It’s not drug related and I have no criminal history, but part of my denial was that my actions were “criminal in nature” or something like that. I think the only plus side of this denial was that there were no reasons relating to dishonesty or lying. Nothing at all related to work. I believe they were worried the info I gave them could be used as blackmail and was a national security risk. The behavior I admitted to hasn’t occurred since before that investigation was done.

I am wondering how much they typically look into past investigations like this in a T1 investigation. I hear some people claim it’s just a glorified records check or something like that, but my biggest nightmare would be getting an EOD without the investigation being completed, moving across the country and starting, then getting terminated because they decided to deny me on suitability. I enjoy my current job, but this new one would give me a very nice pay raise, and I would move to a more favorable part of the US.

I’d appreciate any info or past experiences with T1 investigations. Thank you!

Typically on Tier 1 investigations they do not include polygraph results, only a copy of the previous investigation completed, and that is only if it was from a non-IC agency. In this case they would not include it. Just be honest on the SF85 about being denied due to not passing the polygraph and if there are no other issues than there should be no reason for you to pass.