Loool i thought on start that there could be no Ramirez because of this quote "This quest is apparently the last one available in the BoS quest series, as of Dec 2012. Reported.
If you find Ramirez, let us know! " But until now i was no sure and speak to everybody in Lost Hills.
Ok So Big Thanks for answer please moderators leave this post for ALL Brothers of Steel because i know that there is hard to find that story have no end now and you couldnt rank higher as initiate.Because if someone will think that upper quote is joke because Ramirez is just hidden in bunker ,he will have much work to find him
P.s this post will be help for players and i will tell everyone in game from BoS ;p
BUT you are wrong i was investigating even on forum with some "Roll.. temat" but after all i was still not sure