Oregon Administrative Rules
Chapter 340 - DEPARTMENT OF ENVIRONMENTAL QUALITY
Division 212 - STATIONARY SOURCE TESTING AND MONITORING
Section 340-212-0210 - Monitoring Design Criteria
Universal Citation: OR Admin Rules 340-212-0210
Current through Register Vol. 63, No. 3, March 1, 2024
(1) General criteria. To provide a reasonable assurance of compliance with emission limitations or standards for the anticipated range of operations at a regulated pollutant-specific emissions unit, monitoring under OAR 340-212-0200 through 340-212-0280 must meet the following general criteria:
(a)
The owner or operator must design the monitoring to obtain data for one or more
indicators of emission control performance for the control device, any
associated capture system and, if necessary to satisfy subsection (1)(b),
processes at a regulated pollutant-specific emissions unit. Indicators of
performance may include, but are not limited to, direct or predicted emissions,
including visible emissions or opacity, process and control device parameters
that affect control device and capture system efficiency or emission rates, or
recorded findings of inspection and maintenance activities conducted by the
owner or operator;
(b) The owner
or operator must establish an appropriate range or designated condition for the
selected indicator such that operation within the ranges provides a reasonable
assurance of ongoing compliance with emission limitations or standards for the
anticipated range of operating conditions. Such range or condition must reflect
the proper operation and maintenance of the control device and associated
capture system, in accordance with applicable design properties, for minimizing
emissions over the anticipated range of operating conditions at least to the
level required to achieve compliance with the applicable requirements. The
reasonable assurance of compliance will be assessed by maintaining performance
within the indicator range or designated condition. The ranges must be
established in accordance with the design and performance requirements in this
rule and documented in accordance with the requirements in OAR
340-212-0220.
If necessary to assure that the control device and associated capture system
can satisfy this criterion, the owner or operator must monitor appropriate
process operational parameters, such as total throughput where necessary to
stay within the rated capacity for a control device. In addition, unless
specifically stated otherwise by an applicable requirement, the owner or
operator must monitor indicators to detect any bypass of the control device or
capture system to the atmosphere, if such bypass can occur based on the design
of the regulated pollutant-specific emissions unit;
(c) The design of indicator ranges or
designated conditions may be:
(A) Based on a
single maximum or minimum value if appropriate, e.g., maintaining condenser
temperatures a certain number of degrees below the condensation temperature of
the applicable compound being processed, or at multiple levels that are
relevant to distinctly different operating conditions, e.g., high versus low
load levels;
(B) Expressed as a
function of process variables, e.g., an indicator range expressed as minimum to
maximum pressure drop across a venturi throat in a particulate control
scrubber;
(C) Expressed as
maintaining the applicable parameter in a particular operational status or
designated condition, e.g., position of a damper controlling gas flow to the
atmosphere through a by-pass duct;
(D) Established as interdependent between
more than one indicator.
(2) Performance criteria. The owner or operator must design the monitoring to meet the following performance criteria:
(a) Specifications that provide for obtaining
data that are representative of the emissions or parameters being monitored,
such as detector location and installation specifications, if applicable;
(b) For new or modified monitoring
equipment, verification procedures to confirm the operational status of the
monitoring prior to the date by which the owner or operator must conduct
monitoring under OAR
340-212-0200
through
340-212-0280
as specified in OAR
340-212-0250(1).
The owner or operator must consider the monitoring equipment manufacturer's
requirements or recommendations for installation, calibration, and start-up
operation;
(c) Quality assurance
and control practices that are adequate to ensure the continuing validity of
the data. The owner or operator must consider manufacturer recommendations or
requirements applicable to the monitoring in developing appropriate quality
assurance and control practices;
(d) Specifications for the frequency of the
monitoring, the data collection procedures that will be used (e.g.,
computerized data acquisition and handling, alarm sensor, or manual log entries
based on gauge readings), and, if applicable, the period over which discrete
data points will be averaged for the purpose of determining whether an
excursion or exceedance has occurred:
(A) At
a minimum, the owner or operator must design the period over which data are
obtained and, if applicable, averaged consistent with the characteristics and
typical variability of the regulated pollutant-specific emissions unit,
including the control device and associated capture system. Such intervals must
be commensurate with the time period over which a change in control device
performance that would require actions by owner or operator to return
operations within normal ranges or designated conditions is likely to be
observed;
(B) For all regulated
pollutant-specific emissions units with the potential to emit, calculated
including the effect of control devices, the applicable regulated pollutant in
an amount equal to or greater than 100 percent of the amount, in tons per year,
required for a source to be classified as a major source, for each parameter
monitored, the owner or operator must collect four or more data values equally
spaced over each hour and average the values, as applicable, over the
applicable averaging period as determined in accordance with paragraph
(2)(d)(A). DEQ may approve a reduced data collection frequency based on
information presented by the owner or operator concerning the data collection
mechanisms available for a particular parameter for the particular regulated
pollutant-specific emissions unit, e.g., integrated raw material or fuel
analysis data, noninstrumental measurement of waste feed rate or visible
emissions, use of a portable analyzer or an alarm sensor;
(C) For other regulated pollutant-specific
emissions units, the frequency of data collection may be less than the
frequency specified in paragraph (2)(d)(B), but the monitoring must include
some data collection at least once per 24-hour period, e.g., a daily inspection
of a carbon adsorber operation in conjunction with a weekly or monthly check of
emissions with a portable analyzer.
(3) Evaluation factors. In designing monitoring to meet the requirements in sections (1) and (2), the owner or operator must take into account site-specific factors including the applicability of existing monitoring equipment and procedures, the ability of the monitoring to account for process and control device operational variability, the reliability and latitude built into the control technology, and the level of actual emissions relative to the compliance limitation.
(4) Special criteria for the use of continuous emission, opacity or predictive monitoring systems:
(a) If a continuous emission monitoring
system (CEMS), continuous opacity monitoring system (COMS), or predictive
emission monitoring system (PEMS) is required by other authority under the FCAA
or state or local law, the owner or operator must use such system to satisfy
the requirements of OAR
340-212-0200
through
340-212-0280;
(b) The use of a CEMS, COMS, or
PEMS that satisfies any of the following monitoring requirements satisfies the
general design criteria in sections (1) and (2). However, a COMS may be subject
to the criteria for establishing indicator ranges under section (1):
(A) Section 51.214 and Appendix P of 40 CFR
part 51;
(B) Section 60.13 and
Appendix B of 40 CFR part 60;
(C)
Section 63.8 and any applicable performance specifications required pursuant to
the applicable subpart of 40 CFR part 63;
(D) 40 CFR part 75;
(E) Subpart H and Appendix IX of 40 CFR part
266; or
(F) If an applicable
requirement does not otherwise require compliance with the requirements listed
in paragraphs (4)(b)(A) through (E), comparable requirements and specifications
established by DEQ.
(c)
The owner or operator must design the monitoring system subject to section (4)
to:
(A) Allow for reporting exceedances, or
excursions if applicable to a COMS used to assure compliance with a particulate
matter standard, consistent with any period for reporting of exceedances in an
underlying requirement. If an underlying requirement does not contain a
provision for establishing an averaging period for the reporting of exceedances
or excursions, the criteria used to develop an averaging period in section
(2)(d) applies; and
(B) Provide an
indicator range consistent with section (1) for a COMS used to assure
compliance with a particulate matter standard. If an opacity standard applies
to the regulated pollutant-specific emissions unit, such limit may be used as
the appropriate indicator range unless the opacity limit fails to meet the
criteria in section (1) after considering the type of control device and other
site-specific factors applicable to the regulated pollutant-specific emissions
unit.
Publications: The publication(s) referenced in this rule is available from the agency.
Stat. Auth.: ORS 468.020 & 468A.310
Stats. Implemented: ORS 468A.310
Disclaimer: These regulations may not be the most recent version. Oregon may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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