Ohio Administrative Code › Title 3745 - Ohio Environmental Protection Agency › Chapter 3745-17 - Particulate Matter Standards › Section 3745-17-03 - Measurement methods and procedures

Current through all regulations
			 passed and filed through July 1, 2024
[Comment: For dates and availability of non-regulatory
				government publications, publications of recognized organizations and
				associations, federal rules, and federal statutory provisions referenced in
				this rule, see paragraph 
								(AA) of rule
				3745-17-01 of the Administrative
				Code titled "referenced materials."]
(A) For purposes of ascertaining, defining,
			 and measuring ambient air quality, PM2.5 and PM10 shall be measured by the
			 methods specified in paragraphs 
								(P)(6) and (P)(7) of rule
			 3745-17-01 of the Administrative
			 Code. Such measurements for PM10 shall be corrected to
			 standard conditions for purposes of comparing measurements with the ambient air
			 quality standards set forth in rule
			 3745-25-02 of the Administrative
			 Code.
(B) Emissions test methods
			 and procedures for all new and existing sources.
(1) For the purpose of determining compliance
			 with paragraph (A)(1) of rule
			 3745-17-07 of the Administrative
			 Code, visible particulate emissions shall be determined according to the
			 following:
(a) Except as provided in paragraph
			 (B)(1)(b) of this rule, USEPA method 9 or continuous opacity monitoring as
			 specified in paragraph (C) of this rule shall be employed.
(b) As an alternative to the compliance
			 procedures specified in paragraph (B)(1)(a) of this rule, coal-fired boilers
			 with heat input capacities equal to or greater than two hundred fifty million
			 Btu per hour that are controlled with either baghouses or electrostatic
			 precipitators may determine compliance with the visible particulate emission
			 limitations specified in paragraph (A)(1) of rule
			 3745-17-07 of the Administrative
			 Code through the use of continuous opacity monitoring data. The continuous
			 opacity monitoring system shall comply with the requirements specified in
			 40 CFR
			 60.13 and  be certified in accordance with "USEPA
			 Performance Specification 1." (The continuous opacity monitoring system
			 consists of all the equipment used to acquire data and includes the data
			 recording/processing hardware and software.) During each calendar quarter, the
			 permittee shall be deemed in compliance with paragraph (A)(1) of rule
			 3745-17-07 of the Administrative
			 Code if the following conditions are met:
(i)
			 The nonexempt opacity values in excess of twenty per cent opacity are less than
			 1.10 per cent of the six-minute average opacity values. (Exempt opacity values
			 are defined in paragraphs (A)(1)(b), (A)(2), and (A)(3) of rule
			 3745-17-07 of the Administrative
			 Code.)
(ii) None of the nonexempt
			 six-minute average opacity values exceeds sixty per cent.
(iii) The total amount of time, in hours, of
			 exempt and nonexempt opacity values greater than twenty per cent and less than
			 sixty per cent (not including start-up, shutdown, and malfunction exemptions
			 provided in paragraphs (A)(2) and (A)(3) of rule
			 3745-17-07 of the Administrative
			 Code) does not exceed the product of 0.10 times the actual number of hours the
			 emissions unit was in operation during the calendar quarter.
In the event of a discrepancy between the continuous opacity
				monitoring data and any observations performed in accordance with paragraph
				(B)(1)(a) of this rule during the same time period, an evaluation may be
				performed by the Ohio EPA to assess the accuracy of the continuous opacity
				monitoring data (which may include an audit of the continuous opacity
				monitoring system performed in accordance with EPA 340/1-86-010 (recommended
				quality assurance procedures for opacity continuous emission monitoring
				systems) and "Acid Rain Program Continuous Emission Monitoring Systems (CEMS)
				Field Audit Manual" and the validity of the observations performed in
				accordance with paragraph (B)(1)(a) of this rule. The Ohio EPA may accept and
				utilize any data or observation it finds credible. The permittee is not
				precluded from using any credible evidence in defense of any enforcement action
				that may be initiated by the Ohio EPA.