| http://www.w3.org/ns/prov#value | - As to the first argument, petitioners observe that EPA labels as hazardous substances" the mining wastes and fly ash produced by petitioners because those wastes contain substances, such as arsenic, cadmium, and selenium, which are regulated under one or more of the several environmental statutes referred to in section 101(14).7 Petitioners claim that virtually all mining wastes and fly ash conta
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