Posted by ray@lcorn on September 10, 2003 at 12:17:47:
I’ve dealt with a couple of them. One I had to remove, the other only had to be pumped and tested for leaks.
The one I had to remove took about four hours with a backhoe to uncover and load the tank on a truck. (They are generally concrete and look like a septic tank). Soil testing showed no contaminants, so we didn’t have to dig any further. Labor, equipment, testing and disposal all cost about $2,000.
Had there been any hazardous material (and there is a long list of substances that you’d never imagine would be considered hazardous… even bleach) we would have had to go through the same process used for closing gas tanks… remove the contaminated soil, dispose of in an approved landfill, and possibly have to drill monitoring wells after closing the hole. Costs can range from a minimum of $5,000, to “a lot of money”.
We currently have two properties with grease traps, and we keep a close eye on the tenants’ habits as far as what goes into the tank for just this reason.