I got a call from a friend in NJ who is having alot of work done at his house. The guy who did his pool said that he would do the retaining wall as well and make it a package price. Long story short, the wall is 7' high and about 65' long with two 90 degree turns and a set of steps. the engineer came to sign off on it and lo and behold........NO GEO GRID!!!!!! not one piece. The contractor had to rip it down and is redoing it now. apparently he thought that because it was up against virgin ground all he had to do was set the block and have gravel for drainage.