determined that a woven polyolefin fabric of the type exemplified by nova thene u00ae rb616 6hd manufactured by polymer international n s inc of truco nova scotia canada is one of the most durable liners available for this purpose one reason is that it will remain intact during the microenfractionation of the treated contaminated material by the hereinafter described subject apparatus after the liner has been laid down in a pile on as smooth a surface as possible a layer of sand is applied over the liner windrows are typically spaced 6 8 feet apart the windrows should be no wider than 14 feet and no higher than 6 feet the above described liner is extended out 4 feet past edge of pile with a berm of about eight inches to allow the microenfractionating equipment to straddle the pile all rocks chunks of concrete larger than two inches and other debris should be removed from contaminated soil prior to microenfractionation once the contaminated dirt has been windrowed treatment with the chemical amendments can commence first the soil is analyzed for contaminant and a full agricultural analysis is done the testing for total petroleum hydrocarbons is not in itself an easy task the type and quantity of contaminant.