One can buy pneumatic submersible pumps. I could see having a compressor on the upper levels of the building drive the pump in the basement. http://www.atlasco

One can buy pneumatic submersible pumps. I could see having a compressor on the upper levels of the building drive the pump in the basement. http://www.atlascopco.us/usus/products/navigationbyproduct/productgroup.aspx?id=1602137 http://www.atlascopco.us/usus/products/navigationbyproduct/p... Of course, if the diesel has water in it it's no good anyway. And the submersible pumps are mainly sludge or slurry pumps and (I suspect) not rated to handle fuel.