Current through Register Vol. 63, No. 3, March 1, 2024
(1) Test
Requirements. The owner or operator must conduct initial and annual stack tests
to measure the emission levels of dioxins/furans, cadmium, lead, mercury,
particulate matter, opacity, hydrogen chloride, and fugitive ash.
(2) Use of stack test data. The owner or
operator must use results of stack tests for dioxins/furans, cadmium, lead,
mercury, particulate matter, opacity, hydrogen chloride, and fugitive ash to
demonstrate compliance with the applicable emission limits in OAR
340-230-0380(1) and
(2). To demonstrate compliance for carbon
monoxide, nitrogen oxides, and sulfur dioxide, see
340-230-0383(2)(g).
(3) Schedule. The owner or operator must:
(a) Conduct initial stack tests for the
pollutants listed in (1) of this rule by June 19, 2004.
(b) Conduct annual stack tests for the same
pollutants after the initial stack test. Conduct each annual stack test no
later than 13 months after the previous stack test, and
(c) Conduct each annual stack test no later
than 13 months after the previous stack test.
(4) Test methods. The owner or operator must:
(a) Follow OAR
340-230-0383(10)
to establish the sampling location and to determine pollutant concentrations,
number of traverse points, individual test methods, and other specific testing
requirements for the different pollutants.
(b) Make sure that stack tests for all the
pollutants consist of at least three test runs, as specified in 40 CFR
60.8. Use the average of the pollutant emission concentrations from the
three test runs to determine compliance with the applicable emission limits in
OAR
340-230-0380(1) and
(2).
(c) Use the average of the pollutant emission
concentrations from the three test runs to determine compliance with the
applicable emission limits in OAR
340-230-0380(1) and
(2).
(d) Obtain an oxygen (or carbon dioxide)
measurement at the same time as the pollutant measurements to determine diluent
gas levels, as specified in OAR
340-230-0383(2).
(e) Use the equations in OAR
340-230-0383(8)(a)
to calculate emission levels at 7 percent oxygen (or an equivalent carbon
dioxide basis), the percent reduction in potential hydrogen chloride emissions,
and the reduction efficiency for mercury emissions. See the individual test
methods in
340-230-0383(3)(c)
for other required equations.
(f)
The owner or operator may apply to the Department for approval under 40
CFR Part 60.8(b) to use a reference method with minor changes in
methodology, use an equivalent method, use an alternative method the results of
which the Department has determined are adequate for demonstrating compliance,
waive the requirement for a performance test because the owner or operator has
demonstrated by other means that they are in compliance, or use a shorter
sampling time or smaller sampling volume.
(5) Reduced testing frequency:
(a) The owner or operator may test less often
if it owns or operates a Class II municipal waste combustion unit and if all
stack tests for a given pollutant over 3 consecutive years show that it
complies with the emission limit. In that case, the owner or operator is not
required to conduct a stack test for that pollutant for the next 2 years.
However, another stack test must be conducted within 36 months of the
anniversary date of the third consecutive stack test that shows compliance with
the emission limit. Thereafter, stack tests must be performed every 3rd year
but no later than 36 months following the previous stack tests. If a stack test
shows noncompliance with an emission limit, annual stack tests for that
pollutant must be conducted until all stack tests over 3 consecutive years show
compliance with the emission limit for that pollutant. The provision applies to
all pollutants subject to stack testing requirements: dioxins/furans, cadmium,
lead, mercury, particulate matter, opacity, hydrogen chloride, and fugitive
ash.
(b) The owner or operator may
test less often for dioxins/furans emissions, as described in paragraphs (A)
through (C), if it owns or operates a municipal waste combustion plant that
meets two conditions. First, the owner or operator must have multiple municipal
waste combustion units onsite that are subject to this rule. Second, all those
municipal waste combustion units have demonstrated levels of dioxins/furans
emissions less than or equal to 15 nanograms per dry standard cubic meter
(total mass) for Class I units, or 30 nanograms per dry standard cubic meter
(total mass) for Class II units, for 2 consecutive years. In that case, the
owner or operator may choose to conduct annual stack tests on only one
municipal waste combustion unit per year at the plant. This provision applies
only to stack testing for dioxins/furans emissions.
(A) The owner or operator must conduct the
stack test no more than 13 months following a stack test on any municipal waste
combustion unit at the plant. Each year, the owner or operator must test a
different municipal waste combustion unit subject to this rule and test all
municipal waste combustion units subject to this rule in a sequence determined
by the owner or operator. Once a testing sequence is determined, it must not be
changed without the Department's approval.
(B) If each annual stack test shows levels of
dioxins/furans emissions less than or equal to 15 nanograms per dry standard
cubic meter (total mass) for Class I units, or 30 nanograms per dry standard
cubic meter (total mass) for Class II units, the owner or operator may continue
stack tests on only one municipal waste combustion unit per year.
(C) If any annual stack test indicates levels
of dioxins/furans emissions greater than 15 nanograms per dry standard cubic
meter (total mass) for Class I units, or 30 nanograms per dry standard cubic
meter (total mass) for Class II units, the owner or operator must conduct
subsequent annual stack tests on all municipal waste combustion units subject
to this subpart at the plant. The owner or operator may return to testing one
municipal waste combustion unit per year if the owner or operator can
demonstrate dioxins/furans emissions levels less than or equal to 15 nanograms
per dry standard cubic meter (total mass) for Class I units, or 30 nanograms
per dry standard cubic meter (total mass) for Class II units, for all municipal
waste combustion units at the plant subject to this subpart for 2 consecutive
years.
(6)
Alternative schedules. The owner or operator may not deviate from the 13-month
testing schedules specified in OAR
340-230-0385(3)(b)
and
340-230-0385(5)(b)(A)
unless the owner or operator applies to the
Department for an alternative schedule, and the Department approves the request
for alternate scheduling before the date on which the owner or operator would
otherwise have been required to conduct the next stack test.
Stat. Auth.: ORS 468.020
Stats. Implemented: ORS
468A.025