I know I do not fall into the sub-3.0 GPA crowd, but I would say that it comes very close. My GRE was also not the greatest. However, I got into 3 PhD programs (Northwestern University, University at Buffalo, and Vanderbilt) for communication sciences and disorders, with interest in psychoacoustics and auditory neuroscience. I ultimately chose Northwestern because of feel and quality of program.
It is very possible to get into some programs with some sub-par points. I did have about 5 years of lab experience (also working as the lab manager in a auditory and visuo-spatial lab, while an undergrad) and had 2 regional conference presentations and 1 international conference presentation.
I worried like there was no tomorrow! I had doubts from the minute I submitted my applications. But, most programs look at the whole spectrum of information. I have no doubt my research experience, letters of recommendation, and statement of purpose helped them overlook my lacking areas.
So, I say, you do have a chance to get in with a very low 3.0 and even lower, if other areas really make up for it.