it would be hard to say what kind of soil is under there. here when the bottom is about to fall out like the dozerman described your fixing to hit underground water of some sort. a local soil testing agency may be your best bet. they usually have a 1 ton with a drilling rig mounted on it to get samples as they drill. i,ve seen them go 25 ft deep which should do what you want. the last test hole we done with a report on the soil was about 600 bucks. bodock probably has the cheapest solution if it will work at your site
Last edited by tim pinney; 07/07/10 09:37 PM.
