excess horizontal scrolling in foundation 4

excess horizontal scrolling in foundation 4

I am building a responsive site in foundation 4. My problem is when i
start to decrease the width in my browser or view it on an ipad or
handheld there seems to be a little bit of horizontal scrolling on my
site. I dont want someone to be able to scroll 20 or 30 pixels to the
right when on a handheld device. I am 99% sure the problem lies in
foundation because I built a new site with one div in a large-12 columns
div and set the width to 100% and had the same problem.
here is what I mean: http://seseng.s173701.gridserver.com/
if you go to this site and compress your browser you will see you can
scroll to the right a bit off the page. I have tried modifying the
max-width of the rows but that didn't work. Any ideas?