Washington State
To get to the Moses Lake Biofuel Facility at Moses Lake, you will probably fly into Sea-Tac airport. You will need about 4 hours to drive to Moses Lake.
You begin by taking I-405 North towards Bellevue. At the I-90 interchange, take I-90 East. The road will lead you up through a pass in the Cascade mountains, then down the other side. You will cross the Columbia river at the big bridge. Moses Lake is another 30 miles or so farther east on I-90. The plant is next to the 182 mile marker, you can't miss it.
Here's some pictures of the Cascade Mountains and the Columbia river that you will pass along the way.

East side of Cascade mountains, view to West.

West (dry) side of Cascade mountains, view to North from I-90.

I-90 going west, approaching Cascade mountains.

Bridge over the Columbia river, taken from the ice cream shop just north of the freeway on the west side.

You'll know you're getting close to Moses Lake when you start seeing stuff
like this (photographed from the east bound access road just east of the Quincy exit on I-90).