## Current Effective COMAR text This document shows the final COMAR text, that is part of the Maryland SIP. This will assume all SIP packages up to and including Revision #15 ‐ 05 are accepted/approved by EPA.

Text that is stricken = Not in any SIP revision Fuel Burning Equipment Opacity Requirements are not in a SIP Revision to EPA as of this date. So that text (under 26.11.09) was part of the Effective Action 5/17/2010 but will be a future SIP. Therefore that text is stricken but shown in red as it is planned to be a future SIP. COMAR 26.11.01 General Administrative Provisions

26.11.01.01 Downlaod 12-7-15 

## .01 Definitions. A. In this subtitle, the following terms have the meanings indicated.

B. Terms Defined. (1) Actual Emissions. (a) "Actual emissions" means the average rate, in tons per year, at which a source discha rged a pollutant during a 2- year period which precedes the date of a completed application for an NSR source or other specified date, and which is representative of normal source operation. The Depart ment may allow the use of a different time period upon a determination that it is more representative of normal source operation. Actual emissions shall be calculated using the source's operating hours, production rates, and types of materials processed, stored, or combusted during the selected time period. (b) For the purpose of submitting emissions statements under Regulation .05-1 of this chapter, "actual emissions" means the emissions, in tons per year, which a source discha rged during a calendar year or other specified period of time. (2) "Air pollution" as defined in Environment Article, §2-101, Annotated Code of Maryland, means the presence in the outdoor atmosphere of substances in quantities, having characteristics, and being of a duration which, from any single source or in combination with other sources, are, or may be predicted with reasonable certainty to be, injurious to human, plant, or animal life or to property, or which unreasonably interfe re with the proper enjoyment of the property of others by reason of the emission of odors, solids, vapors, liquids, or gases, throughout the State and in such areas of the State that are affected by them.(3) "Air pollution control equipment" means equipment whose primary purpose is to reduce the discharge of emissions into the atmosphere in order to comply with air pollution control requirements . Eff. 9/27/1998 (4) "Allowable emissions" means the maximum emissions a source or installation is capable of discharging after consideration of any physical, operational, or emissions limitations required by this subtitle or by federally enforceable conditions which restrict operations and which are included in an applicable air quality permit to construct, permit to operate, secretarial order, plan for co mpliance, consent agreement, court order, or applicable federal requirement. (5) "Capture efficiency" means the weig ht per unit time of a pollutant entering a capture system and delivered to a control device, divided by the weight per unit time of the total pollutant generated by a source of the pollutant, expressed as a percentage. The capture efficiency reflects ho w much of the pollutant is captured and routed to the control device. (6) "Certifying individual" means the person responsible for the completion and certification of the emissions statement required in Regulatio n .05-1 of this chapter. (6-1) CO 2 Equivalent Emissions (CO 2 e). (a) “CO 2 equivalent emissions (CO 2 e)” means the amount of GHGs emitted. (b) “CO 2 equivalent emissions (CO 2 e)”shall be computed as follows: (i) Except as stated in §B(6-1)(b)(iii) of this regulation, multiply the mass am ount of emissions (tpy), for each of the six greenhouse gases in the pollutant GHGs, by the gas‘s associated global warming potential published at Table A– 1 to Subpart A of 40 CFR Part 98 — Global Warming Potentials (74 FR 56395); (ii) Sum the resultant values from B(6-1)(b)(i) of this regulation for each gas to compute a tpy CO 2 e; and (iii) Prior to July 21, 2014, the mass of the greenhous e gas carbon dioxide shall not include carbon dioxide emissions resulting from the combustion or decomposition of nonfossilized and biodegradable organic material originating from plants, animals, or micro-organisms (including products, by-products, residues and waste from agriculture, forestry and related industries as well as the nonfossilized and biodegradable organic fractions of industrial and municipal wastes, including gases and liquids recovered from the decomposition of nonfossilized and biodegradable organic material). (6-2) "Commercial bakery oven" (bakery oven) means an oven with a rated heat input capacity of 2,000,000 Btu per hour or greater, that is used to bake bread, rolls, or other yeast-raised products. (7) "Confined emissions" means emissions which are discharged into the outdoor atmosphere through a stack, duct, hood, flue, or other conduit. (8) "Confined source" means an installati on that discharges into the atmosphere through a stack, duct, hood, flue, or other conduit. (9) SIP 15-05 "Continuous emission monitor (CEM)" means a system of instruments installed, operated, and calibrated in accordance with the procedures in this subtitle to continuously measure and record the emission rate or concentration of a substance in a gas stream. (9-1) SIP 15-05 "Continuous opacity monitor (COM)" means a system of instruments installed, operated, and calibrated in accordance with the procedures in this sub title to continuously measure and record the opacity of emissions as six-minute averages of not greater than 15 second increments.(10) "Control efficiency" means the ratio of the emissions released by a control device and the emissions introduced to the control device, expressed as a percentage. (11) "Control equipment" means any device or contrivance which prevents or reduces emissions. (12) "Control o fficer" means: (a) The health officer of Allegany, Anne Arundel, Calvert, Caroline, Carroll, Cecil, Char les, Dorchester, Frederick, Garrett, Harford, Howard, Kent, Prince George's, Queen Anne's, St. Mary's, Somerset, Talbot, Washington, or Wicomico County; (b) The Commissioner of Health of the City of Baltimore , the Director of the Baltimore County Department of Environmental Protection and Resource Management, the Director of the Montgomery County Department of Environmental Protection, or the Chief of the Environmental Programs Section of Worcester County Department of Planning, Permits, and Inspections; or (c) Any employee of the Department designated by the Secretary. (13) Reserved. (14) "Department" means the Department of the Environment. (15) "Distillate fuel oil" means all American Society fo r Testing and Materials numbered fuel oils other than residual fuel oil. (16) "Emissions" means any substance, other than water in an uncombined form, discharged directly or indirectly into the atmosphere including, but not limited to, odors, particulate matter, vapors, gases, or any combination of these substances. (17) "Fuel-burning equipment" means any: (a) Boiler that has the primary function of heating air, water, or any other medium through indirect heat transfer from the burning of fuels; or (b) Stationary internal combustion engine or stationary combustion turbine used to produce mechanical or electrical energy. (18) "Fugitive emissions" means emissions which escape into the outdoor atmosphere through openings such as windows, doors, vents, roof monitors, poorly fitti ng closures, or poorly maintained equipment. (18-1) “Greenhouse gases (GHGs)”means the aggregate group of six greenhouse gases: (a) carbon dioxide (CO 2 ); (b) methane (CH 4 ); (c) nitrous oxide (N 2 O); (d) sulfur hexafluoride (SF 6 ); (e) hydrofluorocarbons (HFCs); and(f) perfluorocarbons (PFCs). (19) "Installation" means any article, machine, equipment, or other contrivance, including, but not limited to, emission control equipment, processing equipment, manufacturing equipment, fuel-burning equipment, incinerators, or any equipment or construction, capable of generating, causing, or reducing emissions. (20) Modification. (a) "Modification" means any physical chan ge in, or change in the operation of, a source or installation which causes a change in the quantity, nature or characteristics of emissi ons from the source or insta llation. However, this term excludes routine maintenance and routine repair, and increases in the hours of operation or in the production rate, unless these increases would be prohibited under any permit or approval conditions adopted by the Department. (b) In the context of New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants adopted or enforced by the Department, the federa l definition of the term "modification" is controlling. (c) "Modify" means to make a modification. (d) In the context of Prevention of Significant Deterioratio n regulations adopted or enforced by the Department, the federal definitions of the terms "modification" and "major modification" are controlling. (20-1) "Motor vehicle" means a vehicle registered with the Maryland Motor Vehicle Administration or the equivalent agency of another state. (21) "National Emission Standards for Hazardous Ai r Pollutants source (NESHAP source)" means any: (a) Source of asbestos, beryllium, mercury, vinyl chlo ride, benzene, or inorganic arsenic which is subje ct to the provisions of 40 CFR Part 61 (excluding Subparts B, H, I, K, Q, R, T, and W), as amended; or (b) Source which is subject to the provisions of 40 CFR Part 63, as amended. Eff. 3/5/12 (22) Reserved. (23) "New Source Performance Standard source (N SPS source)" means any source which is subject to 40 CFR Part 60, as amended. Eff. 3/5/12 (24) "New Source Review source (NSR source)" means a ny major stationary source or major modification subject to the requirements of COMAR 26.11.17. (24-1) (SIP 14-04 in review with EP A, conditional approval expected ) "NO x Ozone Season Allowance" means a CAIR NO x ozone season allowance as defined in 40 CFR 96.302 and does not constitute a security or other form of property. (25) "Odor" means that proper ty of an emission which stim ulates the sense of smell. (26) "Opacity" means the degree to which emissions reduce the transmission of light and obscure the view of an object in the background. (27) "Operating day" means a 24-hour period beginning midnight of one day and ending the following midnight, or an alternative 24-hour period approved by the Department, during which time an installation being monitored is operating, consuming fuel, processing or producing a material, or causing emissions.(28) "Oxides of nitrogen (NO x )" means compounds of nitrogen comprised of nitric oxide (NO) and nitrogen dioxide (NO 2 ), expressed as equivalent molecular weight of NO 2 . (29) "Particulate matter (PM)" means any material, except water in uncombined form, that is or has been airborne, and exists as a liquid or a solid at standard conditions. (30) "Particulate matter emissions" means all finely divided solid or liquid material, other than uncombined water, discharged into the ambient air. (30-1) “PM 2.5 ” means particulate matter with an aerodynamic di ameter less than or equal to a nominal 2.5 micrometers. (30-2) "PM 2.5 emissions" means finely divided solid or liquid materials with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers, discharged into the ambient air. (31) SIP 13-06 "PM 10 " means particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers. (32) SIP 13-06 "PM 10 emissions" means finely divided solid or liquid materials with an aerodynamic diameter less than or equal to a nominal 10 micrometer s, discharged into the ambient air. (33) "Percent seasonal throughput" means percent of annual throughput conducted during each of the 4 seasonal periods (December—February, March—May, June—August, September—November). (34) "Person" means any individual, group of individuals, firm, partnership, voluntary association, or private, public or municipal corporation, or agency, bureau, department or an instrumentality of federal, State, or local government responsible for the use of property. (35) "Potential to emit" means the ma ximum capacity of a stationary source to discharge a pollutant under its physical and operational design. Any physical or operat ional limitation on the capacity of the source to emit a pollutant, including air pollution control equipment and restrictions on hours of operation or on the type or amount of material combusted, stored, or processed, shall be treate d as part of its design if the limitation or the effect it would have on emissions is federally enforceable through a permit condition, compliance plan, or administrative or court order. (36) "Premises" means all the installations or other sources that are located on contiguous or adjacent properties and that are under the control of one person or under common control of a group of persons. (37) SIP 13-05 “Prevention of Significant De terioration (PSD) source” means any new or modified source subject to the provisions of 40 CFR §52.21, as amended. (38) "Process weight" means the total weight of all materials introduced into any specific process which may cause emissions. Solid fuels charged will be considered as part of the process weight, but liquid and gaseous fuels and combustion air will not. (39) "Process weight per hour" means the rate established as follows: (a) For continuous or long-run steady-state operations, the total process weight for the entire period of continuous operation or for a typical portion of operation, divided by the number of hours of the period or portions of operation; (b) For cyclical or batch operations, the total process weight for a period that covers a complete operation or an integral number of cycles, divided by the hours of actual process operation during the period; and(c) When the nature of any process or operation or the design of any equipment permits more than one interpretation of this definition, the interpretation that results in the minimum value for allowable emission shall apply. (40) "Reasonably Available Control Technology (RACT)" m eans the lowest emissions limit that a particular source is capable of meeting by the application of control technolo gy that is reasonably available considering technological and economic feasibility. (41) "Residual fuel oil" means that fu el oil that meets the specifications of the American Society for Testing and Materials for Numbers 4, 5, or 6 (bunker C) oils or crude oils wh en used as a fuel. (42) "Secretary" means the Secr etary of the Environment. (43) "Source" as defined in Environment Article, §2-101(i), Annotated Code of Maryland, means any property, real or personal, or person contributing to air pollution. (44) "Stack or chimney" means any flue, conduit, or duct arranged to conduct emissions. (45) "Stack height" means the height of a stack measured from the ground elevation to the top of the stack, not including caps, nozzles, or other encumbrances. (46) "Standard conditions" means at a temperature of 77°F (25°C) and a pressure of 29.92 inches (760 mm) of mercury. (47) "Standard industrial classification (SIC) code" means a series of codes devised by the federal Office of Management and Budget (OMB) to classify establishments according to the type of econom ic activity in which they are engaged. (48) "True vapor pressure (TVP)" means the vapor pressure of a material at storage temperature, where storage temperature is the maximum monthly aver age temperature of the material or 77°F (25°C), whichever is the higher. (49) "Typical ozone season day (TOSD)" means a day typical of that period of the year during which conditions for photochemical ozone formation are most favorable, which is generally during sustained periods of direct sunlight (that is, long days, little cloud cover) and warm temperatures. (50) "Unconfined source" means an installation that causes emissions which are not enclosed in a stack, duct, hood, flue, or other conduit but which escape into the atmosphere through openings such as windows, vents or doors, ill fitting closures, or poorly maintained equipment. (51) "Vapor balance line" means any connection closed to the atmosphere between the vapor space of two storage containers that will allow the vapors to be displaced as the liquid is transferred from one tank to the other. (52) "Vapor pressure" means the total equilibrium partial pr essure or pressures for any given chemical or mixture at a given temperature. (53) "Volatile organic compound (VOC)" means any or ganic compound which participates in atmospheric photochemical reactions, excluding those compounds which ha ve been determined to have negligible photochemical reactivity by the U.S. Environmental Protection Agency a nd which are listed in 40 CFR §51.100(s), as amended. C. Not SIPed text, fully repealed effective 3/12/15, noted in SIP 12-10. D. Not SIPed text, fully repealed effective 3/12/15, noted in SIP 12-10.26.11.01.05 Download 12-7-15 

## .05 Records and Information. A. The Department may require a person who owns or operates an installation or source to establish and maintain records sufficient to provide the information necessary to: (1) Assist the Department in the development of an implementation plan, air emissions standard, equipment performance standard, or material formulation standard; (2) Determine compliance with an air emissions standard, equipment performance standard, material formulation standard, or permit condition; (3) Verify or update regi stration information; or (4) Update Maryland's air emissions inventory. B. A person who is required pursuant to §A of this regulation to establish and maintain records shall: (1) Maintain the necessary information in a format approved by the Department; and (2) Submit written reports, when requested by the Department, summarizing the information in a format approved by the Department and on a schedul e specified by the Department.

C. 

### SIP 15 ‐ 05 Whenever a provision in this subtitle requires submi ssion or reporting of test results, reports, or other information to the Department, unless otherwise specified, the information shall be submitted to: Program Manager Air Quality Compliance Program Maryland Department of the Environment

1800 Washington Boulevard, Suite 715 Baltimore, Maryland 21230 410-537-4225

D. 

### SIP 15 ‐ 05 Unless otherwise specified, all records, documentati on or other information required by this subtitle, shall be maintained on-site and made available to the Department upon request.

26.11.01.10 Download 12-7-15 

## .10 Continuous Opacity Monitoring Requirements. (all new text in SIP 15 ‐ 05, unless noted otherwise) A. Applicability and Exceptions.(1) The provisions of this regulation apply to: (a) Fuel burning equipment burning coal, fuel oil, tars, or waste combustible fluid at any time and that has a rated heat input capacity of 250 million Btu per hour or greater; (b) Fuel burning equipment burning coal with a rated heat input capacity of 100 million Btu per hour or greater but less than 250 million Btu per hour and was constructed on or before June 19, 1984; (c) A cement kiln; (d) A fluidized bed combustor of any size; and (e) A municipal waste combustor with a burning capacity of 35 tons or greater per day. (2) The owner or operator of an installation subject to this regulation may also be subject to the requirements of 40 CFR Parts 60 and 75, as amended. (3) This regulation does not apply to fuel burning equipment that: (a) Burns only distillate fuel oil or a mixture of gas and distillate fuel oil; (b) Is able to comply with the applicable particulate matter and opacity emission limitations without using particulate matter control equipment; and (c) Has never been found in a final order to be in violation of any visible emissions standard. (4) The owner or operator of fuel burning equipment subject to this regulation may, with approval by the Department, discontinue use of a COM only in accordance with the provisions in COMAR 26.11.09.05C. (5) SIP 15-04 The owner or operator of a cement manufacturing installation may discontinue use of a COM when a PM CPMS is installed and operated in accordance with the requirements of COMAR 26.11.30. B. General Requirements for COMs. (1) The owner or operator of an installation subject to this regulation shall: (a) Install and continuously operate a COM that complies with a plan approved by the Department and EPA in accordance with §B(1 )(b) of this regulation; and (b) Before installing a COM, submit to the Department for approval, a plan containing the COM design specifications, proposed location, and a description of a proposed alternative measurement method consisting of a schedule for utilizing the EPA Reference Method 9 observational procedures. (2) The Department shall submit the plan to EPA for review and approval. (3) A COM shall comply with the applicable requirements in 40 CFR Part 51, Appendix P, Sections 3.3—3.9, as amended, which is incorporated by reference. (4) The owner or operator of fuel burning equipment that is required by this regulation to install and operate a COM is subject to the provisions in COMAR 26.11.09.05. C. Certification and Quality Assurance Procedures.(1) All certification testing, including certification performance tests and audits, shall be performed in accordance with 40 CFR Part 60, Appendix B, as amended, which is incorporated by reference. (2) For fuel burning equipment subject to the federal Acid Rain Program, all certification testing, including certification performance tests and audits , shall be performed in accordance with 40 CFR Part 75, Appendix A, as amended. (3) Certification testing shall be repeated when the Depa rtment determines that the data are invalid because of component replacement or other conditions that affect the accuracy of generated data. (4) The owner or operator that is required to perform a certification performance test shall: (a) At least 60 days before the test, submit a test protocol to the Department for review and approval; (b) Schedule the test at a reasonable time and notify the De partment at least 10 days before the test is to be conducted; and (c) Submit the test results to the Department not later than 45 days after the completion of the test. (5) The owner or operator of fuel-burning equipment required to install and operate a COM shall meet the quality assurance procedures contained in COMAR 26.11.31. D. Record Keeping and Reporting Requirements. (1) System Downtime Reporting Requirements. (a) All COM downtime that lasts or is expected to last more than 24 hours shall be reported to the Department by telephone before 10 a.m. of the first regular business day following the first day on which downtime occurs. (b) The COM downtime report shall include the reason, if known, for the breakdown and the estimated period of time that the COM will be down. The owner or operator shall notify the Department by telephone when the COM has met performance specifications for accuracy, reliability, and durability of acceptable monitoring systems, as provided in 40 CFR Part 51 Appendix P, and is producing data. (c) Except as otherwise approved by the Department a nd the EPA, a COM shall operate in compliance with the requirements of §B(2) of this regulation and collect data for at least 95 percent of the source's operating time during any calendar quarter. The alternative meas urement plan required in §B(1)(b) of this regulation shall be used at all times when the COM fails to conform to performance stan dards required by §B(2) of this regulation during data collection. (2) Data Reporting Requirements. (a) A COM shall automatically reduce all data to six-minute block averages calculated from 24 or more equally spaced data points. (b) All COM data shall be reported in a format approved by the Department. (c) A quarterly summary report shall be submitted to the Department not later than 30 days following each calendar quarter. The report shall be in a format approved by the Department, and shall include the following: (i) The cause, time periods, and the opacity of all emissi ons which exceed the applicable quarterly, daily and hourly emission standards as provided in COMAR 26.11.09.05A(4);(ii) The COM and installation downtimes, including the tim e and date of the beginning and end of each downtime period, and whether the downtime was scheduled; (iii) The cause of all COM downtime; (iv) The total operating time for the quarter, and the tota l time and percent of the operating time during the quarter that excess emissions occurred, and the percentage of COM downtime, during the calendar quarter; (v) Quarterly quality assurance activities; (vi) Daily calibration activities that include reference values , actual values, absolute or percent of span differences, and drift status; (vii) Other information that the Department determines is n ecessary to evaluate the data or to ensure that compliance is achieved. E. All information required by this regulation to be maintain ed or reported to the Department shall be retained and made available for review by the Department for a minimum of 5 years from the time the report is submitted. F. Fuel burning equipment subject to th e COM requirements in COMAR 26.11.09.05 and cement kilns subject to the COM requirements in COMAR 26.11.30 are subject to the COM requirements contained in COMAR 26.11.31. Cement kiln text added wi th part of SIP 15-04

26.11.01.11 Download 12-7-15 

## .11 Continuous Emission Monitoring Requi rements. (all new text in SIP 15-05) A. Applicability and Exemptions. (1) The provisions of this regulation apply to: (a) Fuel-burning equipment burning coal that has a rated heat input capacity of 100 million Btu per hour or greater; (b) Municipal waste combustors with a burning capacity of 35 tons or greater per day; (c) Fluidized bed combustors; and (d) Kraft pulp mills. (2) An owner or operator that is required to install a CEM under any federal requirement is also subject to all of the provisions of this regulation. B. General Requirements for CEMs. (1) An owner or operator subject to this regulation shall: (a) Before installing a CEM, submit to the Department, for approval by the Department and EPA, a plan containing the CEM design specifications, proposed location, and a description of a proposed alternative measurement method; and(b) Install and operate a CEM in accordance with the plan approved by the Department and EPA under the provisions of §B(1)(a) of this regulation. (2) The owner or operator of fuel-burning equipment burning coal, with a heat input capacity of 100 million Btu per hour or greater, shall install CEMs to measure and record sulfur dioxide, nitrogen oxide, either oxygen or carbon dioxide, and flow. (3) The owner or operator of: (a) A municipal waste combustor (MWC) shall install CEMs to measure and record SO x , NO x , carbon monoxide emissions and either CO 2 or oxygen; (b) A Kraft pulp mill shall install a CEM to measure and record SO 2 and flow; and (c) A fluidized bed combustor of any size shall install CEMs to measure and record sulfur dioxide, nitrogen oxide and either oxygen or carbon dioxide. (4) Except as otherwise approved by the Department, if the owner or operator is unable to obtain emissions data from CEMs because of a malfunction of the CEM for more th an 2 hours in duration, the owner or operator shall use the alternative measurement method approved by the Department and EPA. C. Quality Assurance for CEMs. A CEM used to monito r a gas concentration shall meet the quality assurance criteria of 40 CFR Part 60, Appendix F, as amended, which is incorporated by reference, or, if applicable, the quality assurance criteria of 40 CFR Part 75, Appendix B, as amended. D. Monitoring and Determining Compliance. (1) General. A CEM required by this regulation is the primary method used by the Department to determine compliance or non-compliance with the applicable emission standards established in any permit or approval, administrative or court order, Certificate of Public Conv enience and Necessity, or regulation in this subtitle. (2) Data Reduction. A CEM used to monitor a gas concentr ation shall record not less than four equally spaced data points per hour and automatically reduce data in terms of averaging times consistent with the applicable emission standard. E. Record Keeping and Reporting Requirements. (1) CEM System Downtime Reporting Requirements. (a) All CEM system downtime that lasts or is expected to last more than 24 hours shall be reported to the Department by telephone before 10 a.m. of the first regular business day following the breakdown. (b) The system breakdown report required by §E(1)(a) of this regulation shall include the reason, if known, for the breakdown and the estimated period of time that the CEM will be down. The owner or operator of the CEM shall notify the Department by telephone when an out-of-service CEM is back in operation and producing data that has met performance specifications for accuracy, reliability, and durability of acceptable monitoring systems, as provided in COMAR 26.11.31, and is producing data. (2) CEM Data Reporting Requirements. (a) All test results shall be reported in a format approved by the Department.(b) Certification testing shall be repeated when the De partment determines that the CEM data may not meet performance specifications b ecause of component replacement or other conditions that affect the quality of generated data. (c) A quarterly summary report shall be submitted to the Department not later than 30 days following each calendar quarter. The report shall be in a format approved by the Department, and shall include the following: (i) The cause, time periods, and magnitude of all emi ssions which exceed the applic able emission standards; (ii) The source downtime including the time and date of the beginning and end of each downtime period and whether the source downtime was planned or unplanned; (iii) The time periods and cause of all CEM downtime includi ng records of any repairs, adjustments, or maintenance that may affect the ability of the CEM to meet performance specifications of emission data; (iv) Quarterly totals of excess emissions, installation dow ntime, and CEM downtime duri ng the calendar quarter; (v) Quarterly quality assurance activities; (vi) Daily calibration activities that include reference values , actual values, absolute or percent of span differences, and drift status; and (vii) Other information required by the De partment that is determined to be necessary to evaluate the data, to ensure that compliance is achieved, or to determine the applicability of this regulation. (d) All information required by this regulation to be reported to the Department shall be retained and made available for review by the Department for a minimum of 2 years from the time the report is submitted. 

## Chapter 09 Control of Fuel-Burning Equipment, Stationary Internal Combustion Engines, and Certain Fuel-Burning Installations

26.11.09.01 Download 12-8-15 

## .01 Definitions. Note: On 6/13/2011 the definitions under B. were renumbered to pull out the definitions dealing with distributed generation. When the distributed generation definitions were moved to COMAR 26.11.36, the remaining definitions were renumbered, but th is was not submitted to EPA. The definitions that were pulled were not part of the SIP (state only regulations). But a new SIP 15-01 (action effective 4/28/ 2014) was submitte d to EPA and now shows the renumbered definitions under B. and matches the numbering below. A. In this chapter, the following terms have the meanings indicated.

B. Terms Defined. (1) SIP 95-13 "Annual combustion analysis" mean s the measurement of CO and O 2 in the flue gas at the normal operating load and calculation of minimum excess air. (1-1) SIP 15-01 Biomass.(a) “Biomass” means solid organic mate rial that can be combusted for us e as fuel including the following: (i) Wood residue and wood products such as trees, tree stumps, tree limbs, bark , lumber, sawdust, sander dust, chips, scraps, slabs, millings, and shavings; (ii) Animal manure, including litter and other bedding materials; (iii) Vegetative agricultural and silvicultural materials, such as logging residues (slash), nut and grain hulls and chaff (e.g., almond, walnut, peanut, rice, and wheat), bagasse, orchard prunings, corn stalks, coffee bean hulls and ground; and (iv) Any solid organic material that has been approved by the Department, on a case-by-case basis, utilizing the criteria established by EPA and set forth in 40 C.F.R. 241.3, as amended. (b) This definition of biomass is not intended to sugges t that these materials are or are not solid waste. (1

- 2) "Capacity factor" means: (a) The ratio between the actual heat input to fuel burn ing equipment from the fuels burned during a year and the potential heat input if it had been operating for 8,760 hours during the year at the maxi mum steady state design heat input capacity; or (b) The ratio of the unit's actual annual electric output, in megawatt hours, to the unit's name plate capacity multiplied by 8,760 hours. (c) For the purpose of this chapter, the selected method of determining the capacity factor of a unit shall apply contin uously and is determined on a monthly rolling basis for each consecutive 12

- month period. (d) When either of the procedures in §B(1

- 1)(a) or (b) of this regulation is sel ected to determine the capacity factor of a unit, that same procedure shall apply for that unit. ( was (1-1) in 2010) FB SIP TBD (2) "Clean wood" means wood that has no paint, stains, or other types of coatings, and wood that has not been treated with any substance, including but not limited to copper chromium arsenate, creosote, or pentachlorophenol. (NOT SIP with Reg .11) (3) Exists prior to SIP 93-03 "Distillate fuel oil" means all American Society for Testing and Materials numbered fuel oils other than residual. (4) "Fuel" means: (SIP 04-08) edit with SIP 15-01 (a) Coal or any other fossil fuel; (b) Waste combustible fluid or used oil that has been approved by the Department to be burned as a fuel in accordance with Regulation .10 of this chapter ; and (NOT SIP with Reg .10) (c) Biomass as defined in this regulation, or approved by the Department. SIP 10-10 Remove “Fuel-Burning E quipment”, relocate to 26.11.01.01 (5) SIP 02-06 "Gas" means any gaseous fuel that can be used to create useful heat or mechanical energy including: (a) Natural gas or propane;(b) Gaseous fuels produced synthetically; (c) Gaseous substances derived from the decomposition of organic matter; or (d) Gaseous substances derived as a byproduct of a manufacturing process. (6) SIP 00-06 "High heat release unit" means fuel burning equipmen t that is designed with an area heat release rate of 1,400,000 Btu per hour per square foot or greater. (7) SIP 05-07 "Interruptible gas service" means a gas servi ce negotiated between the user and a utility company under the jurisdiction of the Maryland Public Service Commission in which the utility company reserves the right upon determining that gas supplies are inadequate for normal distribution: (a) To interrupt the gas supply after notification; or (b) To limit the gas supply by automatic interruption. (8) "Operating time" means, for the purpose of determining compliance or non

- compliance with this chapter, the actual time in hours that an affected unit operates, beginning when operation of the draft fans is established and ending when feed of the primar y fuel to the combustion chamber is discontinued. (was (11-1) in 2010) FB SIP TBD (9) "Manufacturer" means a person who imports, manufact ures, assembles, or produ ces a small wood boiler. (NOT SIP with Reg .11) (10) "Off

- specification used oil" means used oil that exceeds one or more of the specificati ons in Regulation .10B of this chapter. (NOT SIP with Reg .10) (11) "On

- specification used oil" means used oil that m eets all of the specifications in Regulation .1 0B of this chapter. (NOT SIP with Reg .10) (12) Exists prior to SIP 93-03 "Residual fuel oil" means that fuel oil th at meets the specifications of the American Society for Testing and Materials for Numbers 4, 5, or 6 (bunker C) oils or crude oils when used as a fuel. (13) Exists prior to SIP 93-03 "Rotary cup burner" means a fuel oil burner which employs a rotating cup to atomize and mix fuel oil w ith air for combustion. (14) "Small wood boiler" means a fuel

- burning device: (a) With a rated thermal output of less than 350,000 Btu per hour; (b) Designed to burn clean wood or other approved solid fuels; (c) That the manufacturer specifies for out door installation or indoor installation; and (d) That distributes heated fluid through pipes for the purpose of supplying heat and/or hot water to building spaces. (NOT SIP with Reg .11) (15) SIP 95-13 "Space heater" means fuel-burning equipment that consumes more than 60 percent of its annual fuel during the period from October 31 of one year through March 31 of the following year. For the purpose of this regulation, annual fuel use is the total fuel consumed during the period October 1 of one year to September 30 of the following year, beginning October 1, 1989.(16) SIP 93-03 "System" means all combustion equipment owned or operated by a single business entity. (17) "Used oil" means oil that has been refined from crude oil, or any synthetic oil, that has been used and, as result of the use, is contaminated by physical or chemical impurities . (NOT SIP with Reg .10) (18) "Waste combustible fluid (WCF)" means a fluid waste material that: (a) Is not used oil; (b) Has been approved by the Department in accordance with the requirement s in COMAR 26.13.02 to be burned as fuel in any fuel

- burning equipment or other installation; and (c) Has a heating value of 6,000 Btu or more per pound. (NOT SIP with Reg .10)

26.11.09.05 Download 12-8-15 

## .05 Visible Emissions. (last revision was under SIP 03-10) A. Fuel Burning Equipment. (1) Areas I, II, V, and VI. In Areas I, II, V, and VI, a person may not cause or permit the discharge of emissions from any fuel burning equipment, other than water in an un combined form, which is greater than 20 percent opacity. (2) Areas III and IV. In Areas III and IV, a person may not cause or permit the discharge of emissions from any fuel burning equipment, other than water in an uncombined form, which is visible to human observers except that, for the purpose of demonstrating compliance using COM data, emissions that are visi ble to a human observer are those that are equal to or greater than 10 percent opacity. FB SIP TBD (3) Exceptions. Section A(1) and (2) of this regulation do not apply to emissions during load changing, soot blowing, startup, or adjust ments or occasional cleaning of control equipment if: (a) The visible emissions are not greater than 40 percent opacity; and (b) The visible emissions do not occur for more than 6 consecutive minutes in any sixty minute period. (4) Fuel Burning Equipment Required to Operate a COM. The owner or operator of fuel burning equipment that is subject to the requirement to install and operate a COM shall demonstrate compliance with the applicable visible emissions limitation specified in §A(1) and (2) of this regulation as follows: (a) For units with a capacity factor gr eater than 25 percent, until December 31, 2009, compliance is achieved if visible emissions do not exceed the applicable visible emissions limitation in §A(1) and (2) of this regulation for more than 4 percent of the unit's operating time in any calendar quarter, during which time visible emissions: (i) Do not exceed 40.0 percent opacity, except for 5.0 hours or 0.5 percent of the unit's operating time, whichever is greater; (ii) Do not exceed 70.0 percent opacity fo r more than four (4) 6

- minute periods, except that coal

- fired units equipped with electrostatic precipitators may exceed 70.0 percent opacity for no more than 2.2 hours; and(iii) On any calendar day, do not exceed the applicable visible emissions limitat ion in §A(1) and (2) of this regulation for more than 4.1 hours, during which time visible emissions do not exceed 40.0 percent opacity for more than 1.4 hours and do not exceed 70.0 percent opacity for more than two (2) six

- minute periods; (b) For units with a capacity factor greater than 25 percent, be ginning January 1, 2010, compliance is achieved if visible emissions do not exceed the applicable visible emissions limitation in §A(1) and (2) of this regulation for more than 2 percent of the unit's opera ting time in any calendar quarter, during which time visible emissions: (i) Do not exceed 40.0 percent opacity, except for 5.0 hours or 0.5 percent of the unit's operating time, whichever is greater; (ii) Do not exceed 70.0 percent opacity for more than four (4) six

- minute periods, except that coal

- fired units equipped with electrostatic precipitators may exceed 70.0 percent opacity for no more than 2.2 hours; and (iii) On any calendar day, do not exceed the applicable visible emissions limitation in §A( 1) and (2) of this regulation for more than 4.1 hours, during which time visible emissions do not exceed 40.0 percent opacity for more than 1.4 hours and do not exceed 70.0 percent opacity for more than two 6

- minute periods; (c) For units with a capacity factor equal to or less than 25 percent that operate more than 300 hours per quarter, beginning July 1, 2009, compliance with the applicable visible emissions limitation in §A(1) and (2) of this regulation is achieved if, during a calendar quarter, visible emissions do not exceed the ap plicable standard for more than 20.0 hours, during which time visible emissions: (i) Do not exceed 40.0 percent opacity for more than 2.2 hours; (ii) Do not exceed 70 percent for more than four 6

- minute periods; and (iii) On any calendar day, do not exceed the applicable visible emissions limitation in §A(1) and (2) of this regulation for more than 4.1 hours, during which time visible emissions do not exceed 40.0 percent opacity for more than 1.4 hours and do not exceed 70. 0 percent opacity for more than two 6

- minute periods; and (d) For units with a capacity factor equal to or less than 25 percent that operate 300 hours or less per quarter, beginning July 1, 2009, compliance with the applicable visible emissions limitation in §A(1) and (2) of this regulation is achieved if, during a calen dar quarter, visible emissions do not ex ceed the applicable standard for more than 12.0 hours, during which time visible emissions: (i) Do not exceed 40.0 percent opacity for more than 2.2 hours; (ii) Do not exceed 70.0 percent opacity for more than four 6

- minute periods; and (iii) On any calendar day, do not exceed the applicable visible emissions limitation in §A(1) and (2) of this regulation for more than 4.1 hours, during which time v isible emissions do not exceed 40.0 percent opacity for more than 1.4 hours and do not exceed 70.0 percent opacity for more than two 6

- minute periods. FB SIP TBD (5) Notwithstanding the requirements in §A(4) of this regulation, the Department may determine compliance and noncompliance with the visible emissions limitations specified in §A(1) and (2) of this regulation by performing EPA reference Method 9 observations. FB SIP TBD (6) In no instance shall excess emissions exempted under this regulation cause or contribute to a violation of any ambient air quality standard in 40 CFR Part 50, as amended, or any applicable requirements of 40 CFR Part 60, 61, or 63, as amended. FB SIP TBD B. Determining Violations.(1) For each unit required to operate a COM pursuant to COMAR 26.11.01.10A(1)(a) and (b), each day during a calendar quarter when the opacity of emissions from that unit during the calendar quarter or calendar day, as applica ble, exceeds the emission limitations in §A(4)(a), (b), (c) and (d) of this regulatio n shall constitute a separate day of violation. (2) A violation of §A(4)(a)(i), (ii), or (iii), §A(4)(b)(i), ( ii) or (iii), §A(4)(c)(i), (ii) or (iii), or §A(4)(d)(i), (i i) or (iii), of this regulation, as applicable, that occur on the same day shall constitute separate violations. (3) A daily violation that occurs during the same calendar quarter as a quarterly violation is a separate violation. C. Fuel Burning Equipmen t Subject to Federal COM Requirements. Except for owners or operators of fuel burning equipment subject to any federal requirement that mandates operation of a COM and as provided in §D of this regulation, the owner or operator of fuel burning equipment re quired to install and operate a COM may discontinue the operation of the COM on fuel burning equipment that is served by a flue gas desulfurization device: (1) When emissions from the equipment do not bypass the flue gas desulfurization device serving the equipment; (2) When the flue gas desulfurization device serving the equipment is in operation; (3) If the owner or operator has demonstrated to the Department's satisfaction, in accordance with 40 CFR §75.14, as amended, and all other applicable State a nd federal requirements, that water vapor is present in the flue gas from the equipment and would impede the acc uracy of opacity measurements; and (4) If the owner or operator has fully implemented an alternative plan, approved by the Department, for moni toring opacity levels and particulate matter emissions from the stack that includes: (a) A schedule for monthly observations of visible emissions from the stack by a person trained to perform Method 9 observations; and (b) Installation and operation of a particulate matter CEM that complies with all applicable State and federal requirements for particulate matter CEMs. FB SIP TBD D. If, for units equipped with a flue gas desulfurization device, emissions bypass the device and are discharged through a bypass stack, the bypass stack shall be equipped with a COM approved by the Department. FB SIP TBD E. Stationary Internal Combustion Engine Powered Equipment. (1) Definitions. For the purpose of this section: (a) "Idle" means the condition during which the engine is not performing the useful net work that enables the piece of equipment to accomplish its designated purpose. (b) "Internal combustion engine" (hereafter "engine") means all engines except those used for propulsion of ships or vehicles licensed to operate upon the public highway within the State, or engines employed solely for agricultural and recreational purposes unless they are an integral part of a stationary installation. (2) Emissions During Idle Mode. A person may not cause or permit the discharge of emissions from any engine, operating at idle, greater than 10 percent opacity. (3) Emissions During Operating Mode. A person may not cause or permit the discharge of emissions from any engine, operating at other than idle conditions, greater than 40 percent opacity.(4) Exceptions. (a) Section E(2) of this regulation does not apply for a period of 2 consecutive minutes after a period of idling of 15 consecutive minutes for th e purpose of clearing the exhaust system. (b) Section E(2) of this regulation does not apply to emissions resulting directly from cold engine start-up and warm-up for the following maximum periods: (i) Engines that are idled continuously when not in service: 30 minutes; (ii) All other engines: 15 minutes. (c) Section E(2) and (3) of this regulation do not apply wh ile maintenance, repair, or testing is being performed by qualified mechanics.



## Chapter 31 Quality Assurance Requirements for Continuous Opacity Monitors (COMs)

26.11.31.01 – 12 Download 12-8-15 

## .01 Scope. This chapter codifies the quality assurance (QA) and quality control (QC) procedures previously established by the Department’s Technical Memorandum 90-01 for continuous opacity monitors (COMs). The procedures are transferred into this chapter in regulatory format. In add ition, the general provisions and quality control requirements found in COMAR 26.11.01.10 are also applicable to COMs. 

## .02 Applicability. A. The procedures specified by this chapter shall be us ed to evaluate the effectiveness of a facility’s quality assurance (QA) and quality control (QC) procedures for COMs. The procedures specify the minimum quality assurance requirements for the asse ssment and control of COM data. B. Source owners and operators using COMs shall meet th ese minimum requirements and are encouraged to develop and implement a more extensive QA and QC program or to continue the programs where they already exist. C. Data collected as a result of QA and QC measures requir ed in this chapter shall be submitted to the Department. These data shall be used by both the Department and the owner or operator in assessi ng the effectiveness of the procedures in maintaining acceptable operation and valid emission data. D. All sources using COMs shall develop and implement the required QC plan upon successful completion of the initial performance specification test and shall conduct the re quired QA procedures beginning with the first calendar quarter following the successful performance specification test. E. These procedures explicitly specify the quality assessment methods to be used for calibration drift and quality audits but do not address the evaluation of monitor installation location or the design specification verification procedures which are addressed in Appendix B of 40 CFR Part 60.

## .03 Incorporation by Reference. A. In this chapter, the following documents are incorporated by reference. B. Documents Incorporated. (1) Performance Specification 1 (PS1) under 40 CFR Part 60, Appendix B. (2) Performance Audit Procedures for Opacity Monitors, EPA 450/4-92-010 March 1992, Atmospheric Research and Exposure Assessment Laboratory, Research Triangle Park, North Carolina 27711. 

## .04 Definitions. A. In this chapter, the following terms have the meanings indicated.

B. Terms Defined. (1) “Calibration drift (CD)”means the di fference in the COM output reading from a reference value after a period of operation during which no unscheduled ma intenance, repair, or adjustment to ok place. The reference value may be the simulated zero (or low-level) chec k or the upscale calibration value. (2) “Calibration error” means the difference between the op acity values indicated by th e COM and the known values of a series of calibration attenuat ors (neutral density filters). (3) “Simulated zero check” means the use of a method or device to provide a simulated zero-opacity (or low-level value between zero and 20 percent of span value) and that provides a system ch eck of the analyzer internal optical surfaces and all electronic circ uitry including the lamp an d photodetector assembly. (4) “Span value” means the opacity value at which the COM is set to produce the maximum data display output. (5) “Upscale calibration value” means the opacity value at which a calibration check of the COM is performed by simulating an upscale opacity condition using a neutral density filter or other related technique to produce a known obscuration of the light beam as viewed by the receiver. 

## .05 Principle. A. The QA procedures are a control loop composed of two functions: (1) Assessment of data quality by measurement of COM performance; and (2) Control and improvement of data quality by implementing QC policies and corrective actions. B. When the assessment function indicates that data quality is inadequate, the control effort shall be increased until data quality is acceptable. C. COM Accuracy Determination. (1) Quarterly performance audits involving a series of checks of monitoring system components and operation shall be performed to assess the accuracy of the COM data. Calibrated audit materi als shall be required for certain checks as specified by this chapter.(2) The opacity monitoring data shall be considered accura te if the required audits do not identify problems that detract from the accuracy of the COM data. D. Quality control and corrective actions encompass a vari ety of policies, specifications, standards, and corrective measures. To accommodate these site-specific variables, th is chapter treats QC requirements in general terms to allow each source owner or operator to develop a QC sy stem that is more effective and efficient for the circumstances. However, the final data output device used to report emissions to the Department in the quarterly excess emissions report shall be used for all required QA and QC measurements. 

## .06 Quality Control Requirements. A. Development and Implementation. (1) Each source owner or operator using a COM shall develop a written quality control (QC) program and submit that program to the Department for approval. (2) A source owner or operator may periodically revise its QC program to make it more effective and efficient. Each revised QC program shall be resubmitted to the Department for approval, along with the prior approved program. (3) A source owner or operator shall implement an ap proved QC program as expeditiously as possible. (4) The owner or operator shall mainta in a current copy of the approved QC program on site for inspection. B. Contents. At a minimum, each QC program shall include written procedures which describe in detail complete, step-by-step procedures and operations for each of the following activities: (1) Opacity calibration; (2) Calibration drift determination and adjustment; (3) Daily, monthly, and quarterly checks of component or system performance; (4) Preventive maintenance, including spare parts inventory; (5) Data recording, calculations, and reporting; (6) Performance audits and ze ro alignment procedures; (7) Corrective actions for malfunctioning COMs; and (8) Notification to the Department for the discovery of any out-of-control monitor. 

## .07 Opacity Calibration Drift Assessment. A. Calibration Drift (CD) Requirement. (1) Source owners and operators using COMs shall check, record, and quantify th e CD at two opacity values at least once daily in accordance with the met hod prescribed by the manufacturer. (2) The COM calibration shall, at a minimum, be adjusted whenever the daily zero (or low-level) CD or the daily high-level CD exceeds the limits specified in Performance Specification 1 (PS1) in Appendix B of 40 CFR Part 60.B. Recording Requirements for Automatic CD Adjusting Monitors. (1) Monitors that adjust the data to the corrected ca libration values automatically (for example, microprocessor control) shall be programmed to record the unadjusted opacity before resetting the calibration, or record the amount of adjustment that is applied to the effluent opacity measurements. (2) The data recorded in accordance with §B(1) of this regul ation is to be maintained on site for review by the Department for a period of 2 years.

C. Criteria for Excessive Calibration Drift. (1) If either the zero (or low-level) or high-level CD result exceeds the appli cable drift specifica tion in Performance Specification 1 for five consecutive daily periods, the COM shall be considered out of control. (2) If either the zero (or low-level) or high-level CD result exceeds two times the applicable drift specification in Performance Specification 1 during any CD check, the COM shall be considered out of control. (3) If the COM is out of control, the source owner or oper ator shall take necessary co rrective action to correct the deviation. (4) The owner or operator shall repeat the CD checks no later than 24 hours following corrective action to repair an out-of-control COM.

D. Out-of-Control Period. (1) The beginning of the out-of-control period is the time corresponding to the completion of the fifth consecutive daily CD check with a CD in excess of the allowable limit or the time corresponding to the completion of the daily CD check preceding the daily CD check that results in a CD in excess of two times the allowable limit. (2) The end of the out-of-control period is the time corresponding to the completion of the CD check following corrective action that result in the CD at both the zero (or low-level) an d the high-level measurement points being within the corresponding allowable CD limit. 

## .08 Audit Frequency. A. Each COM shall undergo a perfor mance audit at least once each cale ndar quarter. Successive quarterly performance audits shall not occur within 2 months. B. A zero alignment audit shall be conducted at least an nually, with each coming before a corresponding quarterly performance audit. Successive zero alignment audits shall not occu r within consecutive quarters. C. When conducting a performance or zero alignment audit, the owner or operator shall use the same output device as used to report emissions to the Department in the quarterly excess emissions report. 

## .09 Performance Audit. A. Each performance audit shall include a series of checks of individual mon itoring system components and factors affecting the accuracy of the monitoring data.B. Calculations for COM data shall be in accordance with monitor specific calculations in the EPA document Performance Audit Procedures for Opacity Monitors, which is incorporated by reference in Regulation .03B(2) of this chapter. Examples of detaile d audit procedures are also found in that referenced document. C. A performance audit shall include checks for each procedure in an approved QC program, including, at a minimum, the following checks: (1) Stack Exit Correlation Error. (a) The value of the pathlength correction factor used by the monitor is measured according to procedures specified by the manufacturer. (b) The correct value of the pathlength correction factor is computed from the monitor pathlength and stack exit diameter. (c) The stack exit correlation error is determined as the ratio of the measured value to the correct value and is expressed as a percent. (2) Fault Indicators. Fault lamp indicators, data acquisitio n system error messages, and other system self-diagnostic indicators are examined to determine if th e COM is operating within preset limits. (3) Zero and Upscale Responses. (a) The COM responses to the simulated zero condition (or low-level) and upscale calibration value are determined from the permanent data recording device according to the routine CD check procedure. (b) The zero and upscale response errors are determined from the permanent data recording device to the routine CD check procedure. (c) The zero upscale response errors are determined as th e difference between the corrected values and the observed response for the zero and up scale calibration check. (4) Zero Compensation. The value of the zero compensatio n applied at the time of the audit is determined as equivalent percent opacity. The value is corrected to stack exit conditions, according to th e procedures specified by the manufacturer, where the applicable monitor includes an automatic correction to compensate for drift in the monitor’s response to the simulated ze ro opacity condition or dust accumula tion on the optical surfaces of the transceiver. (5) Optical Alignment. The status of the optical alignment of the transmissometer components shall be determined using an alignment sight that indicates that the monitor is misaligned when a measurement error of 2 percent opacity or greater is caused by misalignment, in accordance with Performance Specification 1 incorporated by reference under Regulation .03B(1) of this chapter. (6) Optical Surface Dust Accumulation. (a) An estimate of the amount of dust (or other particulat e matter) deposited on the exposed optical surfaces of the transmissometer is obtained by recording the apparent effl uent opacity before and af ter cleaning of each of the exposed optical surfaces. (b) The total optical surface dust accumul ation is the sum of the apparent reduc tion in opacity for all of the optical surfaces that are cleaned.(7) Calibration Error. The COM responses are compared using one of the following methods to the known values of three reference neutral density filters corrected to stack exit conditions: (a) The preferred method requires the installation of an audit device, adjusted to provide the same zero response as the monitor’s simulated zero check, that simulates the clear pa th condition and allows insertion of the filters into the light path; or (b) In those cases where an audit device is not availabl e, an alternate method may be used by conducting an incremental calibration (that is, superimposing the audit filters and effluent opacity) and comparing the monitor response to the expected value calculated from the filter and effluent opacity values. This method is sensitive to fluctuations in the effluent opacity during the test. 

## .10 Calibration Error Methods.

A. Test Methods. (1) For both calibration error methods in Regulation .09C(7) of this chapter, th ree filters shall each be placed in the light path five times and the monitor responses shall be determined from the permanent data recorder. (2) The low-, mid-, and high-range calibration error results are computed as the main di fference and the 95 percent confidence interval for the difference between the exp ected and actual responses of the monitor difference as corrected to the stack exit conditions. (3) An owner or operator shall use neutral density filters wi th values that have been determined according to 7.1.3 Attenuator Calibration of Performance Specification 1, which is incorporated by reference under Regulation .03B(1) of this chapter.

B. Attenuator Values. (1) The stability of the attenuator values shall be checked at least once per year according to the procedure specified in Performance Specification 1, which is incorporated by reference under Regulation .03B(1) of this chapter. (2) The attenuator shall be recalibrated if the stability checks indicate a change of 2 percent opacity or greater. (3) Calibration attenuators that produce simulated opacities (as corrected to stack exit conditions) in the ranges listed in §C of this regulation shall be used. (4) Where the use of the specified audit filter values is not practical, alternate filter ranges may be used subject to the approval of the Department. C. Filter Ranges for Opacity Performance Audits. (1) The filter ranges for opacity performance audits are as pr ovided in §C(2) of this regulation or, as applicable, as provided in Performance Specification 1 (PS1) in Appendix B of 40 CFR Part 60. (2) Audit Points and Filter Range are as follows: (a) 8—15% Opacity (low) (b) 20—30% Opacity (mid) (c) 40—50% Opacity (high)

## .11 Zero Alignment Audit. A. General Requirements. (1) A zero alignment audit conducted in accordance with Regulation .08B of this chapter shall compare the monitor responses to the simulated zero check and the actual cl ear path condition. Primary and alternate methods for performing the zero alignment audit are describe d in §A(2) and (3) of this regulation. (2) Primary Zero Alignment Method. (a) The primary zero alignment method shall be performed un der clear path conditions. This is accomplished for the installed transmissometer where the proc ess is not operating and the monitor pathlength is free of particulate matter or the monitor may be removed from its installation and set up under clear path conditions. (b) No adjustment to the monitor should be made other than the establishment of the proper monitor pathlength and correct optical alignment of the transmissometer components. For some monitors it may also be necessary to disable the zero compensation mechanism or to record the amount of correction applied to the simulated zero condition. (c) The monitor response to the clear path condition and to the simulated zero condition shall be recorded as percent opacity. (d) The response difference in percent opacity to the clear path and simulated zero conditions shall be recorded as the zero alignment error. The simulated zero device shall then be adjusted to provide the same response as a clear path condition. (e) The monitor shall then be restored to its operating mode at the facility. (3) Alternate Zero Alignment Method. (a) An external, removable zero-jig may be used to facilita te periodic checks of the simulated zero condition as an alternate zero alignment audit method if: (i) The zero-jig setting is established for the specific monito r by comparison of the monitor responses to the zero-jig and to clear path condition; and (ii) The zero-jig is capable of producing a consistent zero response when it is repeatedly installed on the monitor. (b) The zero-jig shall be protected when not in use to ensure that the setting equivalent to zero opacity does not change. (c) Source owners who use a zero-jig shall perform a primary zero alignment audit and check of the zero-jig setting at least once every 3 years.

B. Criteria for a Successful Audit. (1) Performance Audit. Perfor mance of the COM shall be considered accept able if it meets the following criteria: (a) Stack Exit Correlation E rror: < 2 percent opacity; (b) Fault Indicators: Inactive/no error messages present;(c) Zero and Upscale Responses: < 2 percent opacity; (d) Zero compensation: < 4 percent opacity; (e) Optical Alignment: misalignment error < 2 percent opacity; (f) Optical Surface Dust Accumula tion: < 4 percent opacity; and (g) Calibration Error: < 3 percent opacity. (2) Zero Alignment. (a) Calculations for a zero alignment audit shall be in acc ordance with the EPA document incorporated by reference in Regulation .03B(2) of this chapter. (b) The zero alignment is acceptable if th e error of the simulated zero check is less than 2 percent opacity before adjustment. (c) The simulated zero check should be adjusted to provide the correct resp onse each time the zero alignment audit is performed. (3) Out-of-Control Periods. The beginning of the out-of-control period is the time corresponding to the completion of the performance audit indicating unaccep table performance. The end of the out-of-control period is the time corresponding to the comp letion of the subsequent successful audit. 

## .12 Corrective Actions. A. Unacceptable Audit Results — Single Performance Audit. (1) If the COM is out-of-control, the owner or operator shall take necessary corrective action to eliminate the problem. (2) Following corrective action, the owner or operator, at a minimum, shall conduct a COM performance audit on the portion of the criteria that failed to indicate the COM is operating properly. (3) The COM operator shall include both the audit results showing the COM to be out of control and the results following corrective action showing the COM to be operating within specification in the quarterly report. B. Unacceptable Audit Results — Multiple Performance Audits. (1) If an audit conducted in accordance with Regulation .09 of this chapter identifies unacceptabl e performance (that is, out-of-control conditions) for two c onsecutive quarters, the source owner or operator shall re vise the current written QC procedures or modify or replace the COM to correct the de ficiency causing the unacceptable performance. (2) If the owner or operator chooses to revise the written QC procedures in accordance with §B(1) of this regulation and Regulation .06 of this chapter, the revised procedures shall be submitted to the Department for approval, along with a copy of the current approved procedures. C. Unacceptable Zero Alignment.(1) The performance of the monitoring system is unacceptable if the error of the simulated zero check before adjustment: (a) Exceeds 5 percent opacity for any zero alignment audit; or (b) Exceeds the 2 percent opacity acceptance criterion for three consecutive zero alignment audits. (2) If the performance of the monitoring system is unacceptable, the owne r or operator shall: (a) Take corrective action to resolve the problem and impr ove the stability of the simulated zero check method or device; or (b) Replace the COM. (3) If corrective action is taken under §C(2)(a) of this regulation, the owner or operator shall conduct zero alignment audits at least twice each year duri ng nonconsecutive calendar quarters. (4) If the results of the semi-annual zero alignment audits exceed the limits of §C(1) of th is regulation, the owner or operator shall replace the COM.