rpavlik
commented
10 years ago Leftbound: Top: 1"; Left: 1-1.50"; Bottom: 1"; Right: 1"; Page numbers (in headers) set at .5" from top center
Typical left margin appears to be 1.25 per http://www.grad-college.iastate.edu/current/thesis/resources/files/Headings_and_margins.pdf
Note that it's not twoside - I asked!
Some code I'm grabbing from the comments to clean it up.
\geometry{left=1in, top=1in, headheight=0.25in, headsep=0.5in, right=1in, bottom=1in, includehead=false}