A few comments:
1) Are you sure that's the correct reference? "Fertilizer" is used only once in the entire thing, and it was in reference to sludge from wastewater treatment facilities.
2) I have worked closely with three different fertilizer manufacturers, and none of them would consider using any kind of waste in their formulations.
3) In order for a chemical facility to do ANYTHING to treat, modify, or change hazardous waste in any way, they have to be specifically licensed to do so, and thereby fall under the extremely watchful eye of several government organizations.
4) Chemical companies cannot legally sell a hazardous waste to a fertilizer company in the first place!
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