(a) The purpose of this subchapter is to establish
minimum requirements that define the acceptable management of water
treatment residuals. These requirements apply as specified in §312.2
of this title (relating to Applicability).
(b) The following term, when used in this subchapter,
shall have the following meaning, unless the context clearly indicates
otherwise. Land application unit is an area where water treatment
residuals are applied onto or incorporated into the soil surface for
disposal, where the disposal occurs within five feet of the land surface.
(c) When water treatment residuals are mixed with sewage
sludge, biosolids, or domestic septage or when water treatment residuals
are placed on land for disposal along with sewage sludge, biosolids,
or domestic septage, it is subject to all applicable requirements
of sewage sludge, biosolids, or domestic septage, as specified in
this chapter.
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