Current through August 26, 2024
(1) The
requirements of this section apply to owners or operators of kraft processes
subject to the requirements of this chapter.
(2) The pulping process condensates from the
following equipment systems shall be treated to meet the requirements specified
in subs. (3), (4) and (5):
(a) Each digester
system.
(b) Each turpentine
recovery system.
(c) Each
evaporator system condensate from both of the following:
1. The vapors from each stage where weak
liquor is introduced (feed stages).
2. Each evaporator vacuum system for each
stage where weak liquor is introduced (feed stages).
(d) Each HVLC collection system.
(e) Each LVHC collection system.
(3) One of the following
combinations of HAP-containing pulping process condensates generated, produced
or associated with the equipment systems listed in sub. (2) shall be subject to
the requirements of subs. (4) and (5):
(a) All
pulping process condensates from the equipment systems specified in sub. (2)
(a) to (e).
(b) The combined
pulping process condensates from the equipment systems specified in sub. (2)
(d) and (e), plus pulping process condensate streams that in total contain at
least 65% of the total HAP mass from the pulping process condensates from
equipment systems listed in sub. (2) (a) to (c).
(c) The pulping process condensates from
equipment systems listed in sub. (2) (a) to (e) that in total contain a total
HAP mass of 3.6 kilograms or more of total HAP per megagram (7.2 pounds per
ton) of ODP for mills that do not perform bleaching or 5.5 kilograms or more of
total HAP per megagram (11.1 pounds per ton) of ODP for mills that perform
bleaching.
(4) The
pulping process condensates from the equipment systems listed in sub. (2) shall
be conveyed in a closed collection system that is designed and operated to meet
the requirements specified in pars. (a) and (b):
(a) Each closed collection system shall meet
the individual drain system requirements specified in
40
CFR 63.960,
63.961 and
63.962 of subpart RR,
except closed-vent systems and control devices shall be designed and operated
in accordance with
40
CFR 63.443(d) and
63.450,
instead of in accordance with
40 CFR
63.962(a)(3)(ii), (b)(3)(ii)(A) and
(5)(iii).
(b) If a condensate tank is used in the
closed collection system, the tank shall meet both of the following
requirements:
1. The fixed roof and all
openings, such as access hatches, sampling ports and gauge wells, shall be
designed and operated with no detectable leaks as indicated by an instrument
reading of less than 500 parts per million above background, and vented into a
closed-vent system that meets the requirements in s.
NR 464.08 and routed to a control device that meets the
requirements in s.
NR 464.03(4).
2. Each opening shall be maintained in a
closed, sealed position, e.g., covered by a lid that is gasketed and latched,
at all times that the tank contains pulping process condensates or any HAP
removed from a pulping process condensate stream except when it is necessary to
use the opening for sampling, removal, or for equipment inspection, maintenance
or repair.
(5) Each pulping process condensate from the
equipment systems listed in sub. (2) shall be treated according to one of the
following options:
(a) Recycle the pulping
process condensate to an equipment system specified in s.
NR 464.03(1) meeting the requirements
specified in s.
NR 464.03(3) and (4).
(b) Discharge the pulping process condensate
below the liquid surface of a biological treatment system and treat the pulping
process condensates to meet the requirements specified in par. (c), (d) or (e),
and measuring total HAP as specified in
40 CFR
63.457(g).
(c) Treat the pulping process condensates to
reduce or destroy the total HAPs by 92% or more by weight.
(d) At mills that do not perform bleaching,
treat the pulping process condensates to remove 3.3 kilograms or more of total
HAP per megagram (6.6 pounds per ton) of ODP, or achieve a total HAP
concentration of 210 parts per million or less by weight at the outlet of the
control device.
(e) At mills that
perform bleaching, treat the pulping process condensates to remove 5.1
kilograms or more of total HAP per megagram (10.2 pounds per ton) of ODP, or
achieve a total HAP concentration of 330 parts per million or less by weight at
the outlet of the control device.
(6) Each HAP removed from a pulping process
condensate stream during treatment and handling under sub. (4) or (5), except
for those treated according to sub. (5) (b), shall be controlled as specified
in s.
NR 464.03(3) and (4).
(7) For each control device, such as a steam
stripper system or other equipment serving the same function, used to treat
pulping process condensates to comply with the requirements specified in sub.
(5) (c) to (e), periods of excess emissions reported under s.
NR 464.05 are not a violation subs. (4) and (5) (c) to
(e) and (6) provided that the time of excess emissions, including periods of
startup, shutdown or malfunction, divided by the total process operating time
in a semi-annual reporting period does not exceed 10%. The 10% excess emissions
allowance does not apply to treatment of pulping process condensates according
to sub. (5) (b) as done, for example, with the biological wastewater treatment
system used to treat multiple wastewater streams to comply with the clean water
act.
(8) Each owner or operator of
a new or existing affected source subject to the requirements of this section
shall evaluate all new or modified pulping process condensates or changes in
the annual bleached or non-bleached ODP used to comply with sub. (9) to
determine if they meet the applicable requirements of this section.
(9) For the purposes of meeting the
requirements in sub. (3) (b) or (c) or (5) (d) or (e) at mills producing both
bleached and unbleached pulp products, owners and operators may meet a prorated
mass standard that is calculated by prorating the applicable mass standards
(kilograms of total HAP per megagram of ODP) for bleached and unbleached mills
specified in sub. (3) (b) or (c) or (5) (d) or (e) by the ratio of annual
megagrams of bleached and unbleached ODP.
