First off, I would recommend a less strict containment procedure. I think a standard containment locker would do just fine, and because of it's properties, just mention it needs to be shielded from sight. Saying it needs to be wrapped in paper is unnecessary detail. And termination for anyone trying to access is a bit strict. Punishment is probably assumed when accessing a locked-away SCP, and it doesn't account for mistakes. I mean, even if the personnel in question was a member of a hostile GOI or just had malevolent intent, I would think the foundation would rather find out why they were trying to get at it rather than just killing him.
I feel like the second and third paragraph of the description could be compressed a bit. It all felt a bit repetitious. See if you can summarize and organize it some more, such as placing the query-response tests in one sentence.
Paragraph 5 looses the tone a bit. "Loud throaty cries" should be at least be put in quotes, as the observers are the ones phrasing it in that matter. I almost feel like an interview log would work really well here; a researcher interviewing an observer about a removal attempt from a third subject.
Paragraph 6 probably could use a header, an addendum or recovery report, as it feels better separate from the rest of the description. Also, data expunged and redacted does not need to be bolded. I do recommend though, to at least write what actually happened in the data expunged and redacted (not included in the final draft), because in its current state, it seems a bit awkwardly put in. Also, data expunged and redacted are not interchangeable, as described here.
For the documents, you should indent them to appear in boxes using ">". Check wiki syntax.
One last thing I would add is that articles relating to AWCY mostly follows a specific pattern. The inclusion of the phrase is usually saved until the end, to act as the big climax as the reader reaches the end. I think that would really help the article to not drop the "he stands because he is cool." so soon.
Overall, I think its an ok concept, but not interesting enough in its own right. That's fine, because so many SCPs are like that, and good writing saves them. This can be a great SCP if you implement the AWCY as the climax and write some good dialogue for an interview log.
Toodles!