Remove all organics and either remove fill to the depth of the driveway 10 inches + - with coarser gravel at the bottom or build up and form. Either way make sure ground below is adaquately drained. Then compact.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
DIY Home Improvement Forum
A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! Helping You to Do It Yourself!