Yes, we are proposing definitions that make the distinction clear. We are proposing to
use the phrase “untreated biological soil amendments of animal origin” as a category
that includes raw manure (see proposed §§ 112.3(c) and 112.51(a)). We use the term
“treated biological soil amendments of animal origin” to include treatments that meet the
requirements of the standards presented in subpart F of the proposed rule (see
proposed § 112.51(a)). To further alleviate confusion, we use the term “compost” as a
verb, to mean the act of composting, and do not use it as a noun to describe a soil
amendment that was treated by a composting method. Instead, we use the term
“humus” in its common agricultural meaning (see proposed § 112.3(c)).
