after using the transport system to get to the mountain pass faster talk to the civilian romulan that is there and he will give you an option for the Base Daily run, then use the map to go to the pass in the upper right corner. After you run it and see the recording make sure you DONT leave the base or you will have to run through it again the next day to turn the recording in.
Are you kidding me?! I completed the damn mission and I couldn't find where to turn the damn quest in and I just read this post that you have to wait until the next day to turn it in if you leave. What kind of crap is that?!