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[Gene GeRue <genegerue AT ruralize.com>]

On Jun 24, 2008, at 1:15 PM, Warren wrote:

> No way. Concrete is porous, which means it is saturated with all  
> sorts of
> pathogens. Also, the ground adjacent to the tank will hold the same  
> nasties.
> Even if you could clean it initially, and somehow even sterilize it-  
> the
> groundwater will force it's way back into the tank, recontaminating  
> it. You
> will be better off to collapse the lid and backfill it with rubble,  
> stones
> and dirt.

Warren, if the drainage is good, what do you think about sterilizing  
it with steam, then coating the inside with a non-permeable paint or  
plaster?