| (a) Biosolids and/or sewage sludge (other than domestic
septage).
(1) When required by this subchapter, the frequency
of monitoring for the metals in Table 6 and Table 7 of §312.63(a)
and (b) of this title (relating to Metal Limits), the pathogen density
requirements in §312.82(a) and (b) of this title (relating to
Pathogen Reduction), and the vector attraction reduction requirements
in §312.83(b)(1) - (8) of this title (relating to Vector Attraction
Reduction), for sewage sludge and/or biosolids placed on an active
disposal unit shall be the frequency in Table 8 of this paragraph.
Attached Graphic
(2) The executive director or commission may increase
or decrease the frequency of monitoring required in paragraph (1)
of this subsection after the sewage sludge and/or biosolids are monitored
for two years at the frequency in Table 8 in paragraph (1) of this
subsection. The increase in frequency of monitoring should only increase
to the next highest frequency for each two-year period and then may
be lowered in the same manner. In no case shall the frequency of monitoring
be less than the frequency required in Table 8 in paragraph (1) of
this subsection if sewage sludge and/or biosolids are placed on an
active disposal unit.
(b) If the vector attraction reduction requirements
in §312.83(b)(12) of this title are met when domestic septage
is placed on an active disposal unit, each individual container of
domestic septage shall be monitored for compliance with those requirements.
(c) Air in structures within a surface disposal site
and at the property line of the surface disposal site shall be monitored
continuously for methane gas during the period the surface disposal
site contains an active disposal unit on which the sewage sludge and/or
biosolids are covered and for three years after a disposal unit closes
if a final cover is placed on the sewage sludge and/or biosolids.
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