| (a) Applicability. Facilities that receive a registration
or permit under this chapter are required to test final product in
accordance with this section. Final product derived from municipal
sewage sludge at registered facilities is not subject to the requirements
of this section, but it must comply with the requirements of Chapter
312 of this title (relating to Sludge Use, Disposal, and Transportation).
(b) Grades. Compost material that has undergone the
composting process and is ready for distribution shall be considered
final product, and shall be classified with one of the following grade
names:
(1) Grade 1 Compost;
(2) Grade 2 Compost;
(3) Waste Grade Compost.
(c) Final product testing. Final product shall be regularly
tested pursuant to §332.71 of this title (relating to Sampling
and Analysis Requirements for Final Product) to determine the product's
grade. Testing of final product and interpretation of test results
shall be conducted in accordance with the agency's current Quality
Assurance Project Plan, or, in the case of facilities with agency
permits or registrations, the Quality Assurance Quality Control Plan
specified in the facility's permit.
(d) Final product classification. Final product shall
be classified according to the following classification system.
(1) Grade 1 Compost. To be considered Grade 1 Compost,
the final product must meet all of the following criteria:
(A) Shall contain no foreign matter of a size or shape
that can cause human or animal injury;
(B) Shall not exceed all Maximum Allowable Concentrations
for Grade 1 Compost in Table 1 of this section;
Attached Graphic
(C) Shall not contain foreign matter in quantities
that cumulatively are greater than 1.5% dry weight on a 4mm screen;
(D) Shall meet the requirements of cured compost as
described in Table 2 of this section;
Attached Graphic
(E) Shall meet the requirements for pathogen reduction
for Grade 1 Compost as described in Table 3 of this section; and
Attached Graphic
(F) Shall meet the requirements for salinity and pH
for Grade 1 Compost as described in Table 3 of this section.
(2) Grade 2 Compost:
(A) Shall contain no foreign matter of a size or shape
that can cause human or animal injury;
(B) Shall not exceed all Maximum Allowable Concentrations
for Grade 2 Compost in Table 1 of this section at a compost organic
matter content that is equivalent to a mature compost when maturity
is determined by reduction in organic matter during the interim period
or a maturity test that is part of an approved maturity test protocol;
(C) Shall not contain foreign matter in quantities
that cumulatively are greater than 1.5% dry weight on a 4mm screen;
(D) Shall meet the requirements of semi-mature compost,
mature compost, or cured compost as described in Table 2 of this section;
(E) Shall meet the requirements for pathogen reduction
for Grade 2 Compost as described in Table 3 of this section; and
(F) Shall meet the requirements for salinity and pH
for Grade 2 Compost as described in Table 3 of this section.
(3) Waste Grade Compost:
(A) Exceeds any one of the Maximum Allowable Concentrations
for Grade 2 final product in Table 1 of this section; and
(B) Does not meet the other requirements of Grade 1
or Grade 2 Compost.
(e) Maturity adjustment. Compost that is semi-mature
or mature shall have the metal concentrations adjusted to reflect
the metal concentration that would occur if the compost met the criteria
for a cured compost as described in Table 2, "Maturity and Stability
Standards."
(f) Waste grade final product. Any material that does
not meet the final product standards shall be appropriately disposed
at a permitted municipal solid waste facility.
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