**STATE OF RHODE ISLAND AND PROVIDENCE PLANTATIONS DEPARTMENT OF ENVIRONMENTAL MANAGEMENT** 

**OFFICE OF** **AIR RESOURCES** 

### RHODE ISLAND **AIR POLLUTION CONTROL GENERAL DEFINITIONS REGULATION** 

Effective : 19 July 2007

AUTHORITY : These regulations are authorized pursuant to R.I . Gen. Laws § 42 - 17.1 - 2(s) and 23 - 23 , as amended, and have been promulgated pursuant to the procedures set forth in the R.I . Administrative Procedures Act, R.I. Gen. Laws Chapter 42 - 35.Page 1 of 10 **STATE OF RHODE ISLAND AND PROVIDENCE PLANT ATIONS**  **DEPARTMENT OF ENVIRONMENTAL MANAGEMENT**

**OFFICE OF** **AIR RESOURCES AIR POLLUTION CONTROL GENERAL DEFINITIONS REGULATION**  **Applicability** Unless otherwise expressly defined by

an individual Air Pollution Control Regulation, the terms , definitions and uni t of measure abbreviations contained herein shall be generall y applicable to all Rhode I sland Air Pollution Control Regulations adopted or amended at the same time as or after the adoption of these definitions . **Definitions "**  **Act "**  **or "**  **Clean Air Act "**  **or “C AA”**  means the Federal Clean Air Act, as amended 42 U.S.C. 7401, et seq. **" Actual h**  **eat i**  **nput "**  means the gross heat release potential based upon the actual BTU content of the fossil fuel being burned and the rate at which it is burned.

**" Administrator**  **"** means the Administrator of the United States Environmental Protection Agency

or the Administrator's dul y authorized representative. **“Aerodynamic downwash”** means the rapid descent of a plume to ground level with little dilution and dispersion due to alteration of background air flow characteristics caused by the presence of buildings or other obstacles in the vicinity of the emission point . **" Air contaminant**  **"** means soot, cinders, ashes, any dust, fumes, gas, mist, smoke, vapor, odor, toxic or radioactive material, particulate matter, or any combination of these.

**" Air pollution**  **"** means the presence in the outdoor atmosphere of one or more air contaminants in sufficient quantities which , either alone or in connection with other emissions, by reason of their concentration and duration , may be injurious to human, plant or animal life, or cause damage to property or which unreasonably interferes with the enjo ym ent of life and property . **" Air pollution control system**  **"** means a s ys tem, device or equipment designed and ins talled primarily for the purpose of reducing or eliminating the emission of air contaminants to the atmosphere.

**" Best available control technology**  **" or**  **" BACT**  **"** means an emissions limitation (including a visible emissions standard) based on the maximum degre e of reduction for each air pollutant which would be emitted from any proposed stationary

source or modification which the Director, on a case - by- case basis, taking into account energy , environmental and economic impacts and other costs, determines is achi evable for such stationary source or modification through application of production processes or available methods, systems and techniques,Page 2 of 10

including fuel cleaning, clean fuels, or treatment or innovative fuel combustion techniques for control of such pollutant. In no event shall application of best available control technology result in emissions of any pollutant which would exceed the emissions allowed b y any applicable state or federal air pollution control rule or regulation. If the Director determines that technological or economic limitations on the application of measurement methodology to a particular emissions unit would make the imposition of air emissions standards infeasible, a design, equipment, work practice, operational standard or combination thereof, may be prescribed instead to satisfy the requirement of best available control technology . Such standard shall to the degree possible set forth the emission reduction achievable by implementation of such design, equipment, work practice or operation and shall provide for compliance b y means which achieve equivalent results. **“CFR”** means the Code of Federal Regulations.

**" Department**  **"** means the Rhode Island Department of Environmental Management.

**" Director**  **"** means the Director of the Rhode Island Department of Environmental Management or any subordinate or subordinates to whom he or she has delegated the powers and duties vested in him or her b y Title 23, Chapter 23, Section 5 of the General Laws of Rhode Island.

**" Distillate Oil**  **"** means fuel oil that complies with the specifications for fuel oil numbers 1 or 2, as defined b y the American Society for Testing and Materials in ASTM D396 - 78, " Standard Specification for Fuel Oils " . **“Division”** means the Rhode Island Department of Environmental Management’s Office of Air Resources or its predecessor agencies, the Division of Air Resources and the Division of Air and Hazardous Materials.

**" Emissions unit**  **"** means any part of a stationary

source which emits or would have the potential to emit any

air pollutant ( including fugitive emissions). This term is not meant to alter or affect the definition of the term " unit " for purposes of Title IV of the Act.

**" Enforceable document**  **"** means a major or minor source permit issued pursuant to the requirements of Air Polluti on Control Regulation No. 9, an operating permit or emissions cap issued pursuant to the requirements of Air Pollution Control Regulation No. 29, an air toxics operating permit issued pursuant to the requirements of Air Pollution Control Regulation No. 22, a consent agreement or an approval issued pursuant to the requirements of Air Pollution Control Regulation Nos. 15, 19, 21, 26, 27, 30 or 35.

**" EPA**  **"** means the United States Environmental Protection Agency . **" Facility**  **" or**  **" stationary source**  **"** mean s all air pollutant - emitting activities which belong to the same industrial grouping, are located on one or more contiguous or adjacent properties, and are under the control of the same person (or persons under common control). Pollutant emitting activities shall be considered as part of the same industrial grouping if they belong to the same " major group " (i.e. which have the same two - digit code) as described in the Standard Industrial Classification Manual, 1987. A facility or stationary source may consist of one or more emissions units. A facility or stationary

source does not include emissions resultingPage 3 of 10

directly from an internal combustion engine for transportation purposes, emissions from a nonroad engine or the activities of any vessel.

**" Federally Enforceable**  **"** means all limitations and conditions which are enforceable by the Administrator of the U.S. Environmental Protection Agency including, but not limited to, those requirements developed pursuant to 40 CFR Part 60 (New Source Performance Standards), 40 CFR Part 61 (National Emission Standards for Hazardous Air Pollutants), 40 CFR Part 63 (National Emission Standards for Hazardous Air Pollutants for Source Categories), requirements within the State I

mplementation Plan, those requirements in operating permits issued pursuant to Air Pollution Control Regulation No. 29 or 40 CFR Part 71 (except those listed as " Not Federally Enforceable " ), those requirements in major or minor source permits issued pursuant to Air Pollution Control Regulation No. 9, to the extent the regulation is a part of the State Implementation Plan and those requirements in emissions caps issued pursuant to Air Pollution Control Regulation No. 29.

**" Fossil fuel**  **"** means natural gas, petroleum, coal and any form of solid, liquid or gaseous fuel derived from such materials for the purpose of creating useful heat.

**" Fossil fuel fired steam or hot water generating unit**  **"** means a furnace or boiler used in the process of burning fossil fuel for the purpose of producing steam or hot water by heat transfe r. **" Fuel oil**  **"** means any

virgin distillate oil, virgin residual oil or a blend of these.

**" Fugitive emissions**  **"** means those emissions which could not reasonabl y pass through a stack, chimney , vent or other functionally equivalent opening. **"Good engineering practice"**  **or “GEP”** means , with respect to stack heights, the height necessary to insure that emissions from the stack do not result in excessive concentrations of any air pollutant in the immediate vicinity of the source as a result of aerody namic downwas h, eddies and wakes which may be created by

the source itself, nearb y structures or nearb y terrain obstacles as calculated according to the Rhode Island Guideline on Air Quality Modeling

**" Halogenated Organic Compound**  **" and**  **" HOC**  **"** means the following compoun ds:

(a) CFC - 11 (trichlorofluoromethane) (b) CFC - 12 (dichlorodifluoromethane) (c) CFC - 113 (1,1,1 - trichloro 2,2,2 - trifluoroethane) (d) CFC - 114 (1,2 - dichloro 1,1,2,2 - tetrafluoroethane) (e) CFC - 115 (chloropentafluoroethane) (f) HCFC - 22 (chlorodifluoromethane) (g) HCFC - 31 ( chlorofluorom ethane) (h) HCFC - 123 (1,1,1 - trifluoro 2,2 - dichloroethane) (i) HCFC 123a ( 1,2 - dichloro - 1,1,2 - trifluoroethane) (j) HCFC - 124 (2 - chloro 1,1,1,2 - tetrafluoroethane) (k) HCFC - 141b (1,1 - dichloro 1 - fluoroethane) (l) HCFC - 142b (1 - chloro 1,1 - difluoroethane) (m) HCFC - 151a ( 1 - chloro - 1 - fluoroethane) (n) HCFC - 225ca ( 3,3 - dichloro - 1,1,1,2,2 -pentafluoropropane)Page 4 of 10 (o) HCFC - 225cb ( 1,3 - dichloro - 1,1,2,2,3 -pentafluoropropane) (p) methyl chloroform (1,1,1 - trichloroethane) (q) methylene chloride (dichloromethane) (r) perchloroethylene

**" Hazardous Air Pollutant**  **" and**  **" HAP**  **"** means an air pollutant which has been listed pursuant to Section 112(b) of the Clean Air Act Amendments of 1990.

**" Heat input capacity**  **"** means the manufacturer’s or designer’s guaranteed maximum rate of heat input, whichever is greater.

**" Lowest achievable emiss**  **ion rate "**  **or "**  **LAER "**  means , for any stationary source, the more stringent rate of emissions based on the following: (1) The most stringent emission limitation which is contained in the implementation plan of any state for such class or category of stationa ry source, unless the owner or operator of the proposed stationary source demonstrates that such limitations are not achievable; or (2) The most stringent emission limitation which is achieved in practice by such class or category

of stationary

source. This limitation, when applied to a modification, means the lowest achievable emission rate for the new or modified installation within the stationary

source. In no event shall the application of this term permit a proposed new or modified stationary source to emit any

pollutant in excess of the amount allowable under applicable new source performance standards.

**" Natural gas**  **"** means a naturally occurring mixture of hydrocarbon and non hydrocarbon gases found in geologic formations beneath the earth's surface, of which the principal constituent is methane.

**" Nitrogen oxides**  **"** means nitric oxide (NO), nitrogen dioxide (NO 2 ) and any other species of nitrogen oxides, expressed as the molecular weight of NO 2 . **" Nonroad engine**  **"** means: (a) Except as discussed in paragrap h (b) of this definition, a nonroad engine is any internal combustion engine: (1) In or on a piece of equipment that is self -propelled or serves a dual purpose by both propelling itself and performing another function (such as garden tractors, off - highway mobi le cranes and bulldozers); or (2) In or on a piece of equipment that is intended to be propelled while performing its function (such as lawnmowers and string trimmers); or (3) That, by

itself or in or on a piece of equipment, is portable or transportable, meaning designed to be and capable of being carried or moved from one location to another. Indicia of transportability include, but are not limited to, wheels, skids,Page 5 of 10 carrying handles, dolly , trailer, or platform. (b) An internal combustion engine is not a nonroad eng ine if: (1) the engine is used to propel a motor vehicle or a vehicle used solel y for competition, or is subject to standards promulgated under section 202 of the Act; or (2) the engine is regulated by a federal New Source Performance Standard promulgated under se ction 111 of the Act; or (3) the engine otherwise included in paragraph (a) ( 3) of this definition remains or will remain at a location for more than 12 consecutive months or a shorter period of time for an engine located at a seasonal source. A location is any single site at a building, structure, facility, or installation. Any engine (or engines) that replace an engine at a location and that is intended to perform the same or similar function as the engine replaced will be included in calculating the consecutive time period. An engine located at a seasonal source is an engine that remains at a seasonal source during the full annual operating period of the seasonal source. A seasonal source is a stationary

source that remains in a single location on a permanent basis (i.e., at least two ye ars) and that operates at that single location approximately three months (or more) each ye ar. This paragraph does not apply to an engine after the engine is removed from the location.

**" Opacity**  **"** means the degree to which air c ontaminants reduce the transmission of light and obscure a contrasting background.

**" Owner or operator**  **"** means any person who owns, leases, operates, controls or supervi ses any building, structure, facility, installation or emission s unit which directly or indirectly

results or may result in emission of any air contaminant.

**" Particulate matter**  **"** means any material, other than uncombined water, that is or has been airborne and exists as a liquid or solid at ambient conditions.

**" Person**  **"** means an individual, trust, firm, joint stock company, corporation (including a quasi governmental corporation), partnership, limited liability company ( LLC ), association, sy ndicate, municipality , municipal or state agency , fire district, club, non - profit agency or any subdivis ion, commission, department, bureau, or agency of state or federal government (including a quasi - governmental corporation) or of any interstate body. **" Potential to emit**  **" or**  **" potential emissions**  **"** means the maximum capacity of a stationary source to emit a pollutant under its physical or operational design. Any physical or operational limitation on the capacity of a source to emit a pollutant, including air pollution control equipment and restrictions on the hours of operation or on the ty pe or amount of mat erial combusted, stored or processed, shall be treated as part of its design onl y if the limitation or the effect it would have on emissions is federally enforceable. Secondary

emissions do not count in determining the potential to emit of a stationary source. This term does not alter or affect the use of this term for any other purposes under the Act, or the term " capacity factor " as used in Title IVof the Act or the regulations promulgated thereunder.Page 6 of 10

**" Reasonably Available Control Technology**  **"** and **" RACT**  **"** means the lowest emission limitation that a particular piece of equipment or pollutant emitting activity is capable of meeting b y using measures that are reasonabl y available in terms of technological and economic feasibility . **" Residual oil**  **"** means No. 4 , No. 5, or No. 6 fuel oil.

**" Stack**  **"** means a flue, conduit or opening to provide for the emission of the products of combustion and/or other air contaminants into the atmosphere.

**" Secondary emissions**  **"** means emissions which occur as a result of the construction or operation of a major stationary source or major modification, but do not come from the major stationary source or major modification itself. Secondary emissions must be specific, well defined, quantifiable and impact the same general areas as the stationary source or modification. Secondary

emissions include emissions from any off - site support facility

which would not be constructed or increase its emissions except as a result of the construction or operation of the major stationary source or major modification. Secondary emissions do not include emissions from any mobile source regulated under Title II of the Clean Air Act.

**" Volatile organic compound**  **" and**  **" VOC**  **"** means any organic compound which participates in atmospheric photochemical reactions. This includes any organic compound other than the following compounds:

(a) acetone (b) CFC - 11 (trichlorofluoromethane) (c) CFC - 12 (dichlorodifluoromethane) (d) CFC - 113 (1,1,2 - trichloro 1,2,2 - trifluoroethane) (e) CFC - 114 (1,2 - dichloro 1,1,2,2 - tetrafluoroethane) (f) CFC - 115 (chloropentafluoroethane) (g) 2 - (difluoromethox ym ethyl) - 1,1,1,2,3,3,3 - heptafluoropropane ( (CF 3 ) 2 CFCF 2 OCH 3 ) (h) ethane (i) 2 - (ethox ydifluoromethyl ) - 1,1,1,2,3,3,3 - heptafluoropropane ( (CF 3 ) 2 CFCF 2 OC 2 H 5 ) (j) HCFC - 22 (chlorodifluoromethane) (k) HCFC - 31 ( chlorofluoromethane) (l) HCFC - 123 (1,1 ,1 - trifluoro 2,2 - dichloroethane) (m) HCFC 123a ( 1,2 - dichloro - 1,1,2 - trifluoroethane) (n) HCFC - 124 (2 - chloro 1,1,1,2 - tetrafluoroethane) (o) HCFC - 141b (1,1 - dichloro 1 - fluoroethane) (p) HCFC - 142b (1 - chloro 1,1 - difluoroethane) (q) HCFC - 151a ( 1 - chloro - 1 - fluoroethane) (r) HCFC - 225ca ( 3, 3 - dichloro - 1,1,1,2,2 -pentafluoropropane) (s) HCFC - 225cb ( 1,3 - dichloro - 1,1,2,2,3 -pentafluoropropane (t) HFC - 23 (trifluoromethane) (u) HFC - 32 ( difluoromethane) (v) HFC - 43 - 10mee ( 1,1,1,2,3,4,4,5,5,5 - decafluoropentane) (w) HFC - 125 (pentafluoroethane)Page 7 of 10 (x) HFC - 134 (1,1,2,2 - tetrafluoroethane) (y) HFC - 134a (1,1,1,2 - tetrafluoroethane) (z) HFC - 143a (1,1,1 - trifluoroethane) (aa) HFC - 152a (1,1 - difluoroethane) (bb) HFC - 161 ( ethylfluoride) (cc) HFC - 227ea ( 1,1,1,2,3,3,3 - heptafluoropropane) (dd) HFC - 236ea ( 1,1,1,2,3,3 - hexafluoropropane) (ee) HFC - 236fa ( 1,1,1,3,3,3 - hexafluoropropane) (ff) HFC - 245ca ( 1,1,2,2,3 -pentafluoropropane) (gg) HFC - 245ea ( 1,1,2,3,3 -pentafluoropropane) (hh) HFC - 245eb ( 1,1,1,2,3 -pentafluoropropane) (ii) HFC - 245fa ( 1,1,1,3,3 -pentafluoropropane) (jj) HFC - 365mfc ( 1,1,1,3,3 - pentafluorobutane) (kk) HFE - 7000 (1,1,1,2,2,3,3 - heptafluoro - 3 - methoxy propane or n - C 3 F 7 OCH 3 ) (ll) HFE - 7100 ( 1,1,1,2,2,3,3,4,4 - nonafluoro - 4 - methoxy butane or C 4 F 9 OCH 3 ) (mm) HFE - 7200 ( 1 - ethox y- 1,1,2,2,3,3,4,4,4 - nonafluorobutane or C 4 F 9 OC 2 H 5 ) (nn) HFE - 7300 (1,1,1,2,2,3,4,5,5,5 - decafluoro - 3 - methoxy- 4 - trifluoromethylpentane or L - 14787 or C 2 F 5 CF( OCH 3 )CF(CF 3 ) 2 ) (oo) HFE - 7500 (3 - ethox y- 1,1,1,2,3,4,4,5,5,6,6,6 - dodecafluoro - 2 - (trifluoromethyl ) hexane) (pp) methane (qq) methyl acetate (rr) methyl chloroform (1,1,1 - trichloroethane) (ss) methyl formate (HCOOCH 3 ) (tt) methylene chloride (dichloromethane) (uu) parachlorobenzotrifluoride (PCBTF) (vv) perchloroethylene (tetrachloroethylene) (ww) cyclic, branched, or linear completel y methyl ated siloxanes (xx) The perfluorocarbon compounds which fall into these classes: (1) Cyclic, branched, or linear, completel y fluorinated alkanes; (2) Cyclic, branched, or linear, completel y fluorinated ethers with no unsaturations; (3) Cyclic, branched, or linear, completel y fluorinated tertiary amines with no unsaturations; and (4) Sulfur containing perfluorocarbons with no unsaturations and with sulfur bonds only

to carbon and fluorin e. These compounds have been determined to have negligible photochemical reactivity. For purposes of determining compliance with emission limits, VOC will be measured b y the approved test methods. Where such a method also inadvertentl y measures compound s with negligible photochemical reactivity, as defined above, an owner or operator may exclude these negligible photochemical reactive compounds when determining compliance with an emissions standard. Exempt solvents will be treated as water in " pounds of VOC per gallon of coating minus water " calculations. Classification of methylene chloride and perchloroethylene as exempt compounds does not relieve the facility of the requirements in Air Pollution Control Regulation No. 22.Page 8 of 10 The compound t - butylacetate is considered a VOC for purposes of all recordkeeping, emissions reporting, photochemical dispersion modeling and inventory requirements which appl y to VOC and shall be uniquely identified in emission reports, but is not a VOC for purposes of VOC emission s limitations or VOC content requirements.Page 9 of 10

**Abbreviations and Symbols -**  **Unit s**  **of Measure Abbreviations and Symbols**  **Definition** Btu British thermal unit °C Degree Celsius (centigrade) cm Centimeter dscf Dry cubic feet at standard conditions dscm Dry cubic meter at standard conditions °F Degree Fahrenheit ft Feet g Gram gal Gallon gr Grain hr Hour kg Kilogram lb Pound lbs Pounds m Meter m 3 Cubic meter mg Milligram (10 - 3 gram) mm Millimeter (10 - 3 meter) ppm Parts per million psi Pounds per square inch tpy Tons per year  g Microgram (10 - 6 gram) vol Volume wt Weight % PercentPage 10 of 10

**General Provisions Purpose**  The purpose of this regulation is to provide a consistent set of definitions and abbreviations for terms used in more than one of the Rhode I sland Air Pollution Control Regulations. **Authority** These regulations are authorized pursuant to R hode I sland Gen eral Laws § 42 - 17.1 - 2(s) and 23 - 23 , as amended, and have been promulgated pursuant to the procedures set forth in the Rhode I sland Administrative Procedures Act, Rhode I sland Gen eral Laws Chapter 42 - 35. **Application** The terms and provisions of this regulation shall be liberall y construed to permit the Department to effectuate the purposes of state law, goals and policies. **Se verability**  If any provision of this regulation or the application thereof to any person or circumstance, is held invalid by a court of competent jurisdiction, the validity of the remainder of the regulation shall not be affected thereb y. **Effective Date** The foregoing regulation, " Rhode Island Air Pollution Control General Definitions Regulation " , after due notice, is hereb y adopted and filed with the Secretary of State this

____29th day

of ___June___, 20 07 _ to become effective twenty (20) days thereafter , in accordance with the provisions of Chapters 23 - 23, 42 - 35, 42 - 17.1, 42 - 17.6, of the General Laws of Rhode Island of 1956, as amended. W. Michael Sullivan, PhD., Director Department of Environmental Management **Notice Given on: February 21, 2007**  **P ublic Hearing held:**  **March 23, 2007 Filing Date:**  **June 29, 2007 Effective Date:**  **July 19, 2007**