MONTEREY BAY UNIFIED AIR POLLUTION CONTROL DISTRICT REGULATION II PERMITS

RULE 207. REVIEW OF NEW OR MODIFIED SOURCES 

### (Adopted 9-1-74; 

### Revised 7-15-76,7-18-79,1-30-80,1-27-82, 12-15-82,6-15-84,12-13-84, 

### 2-17-88,5-18-88,7-27-88,9-19-90,4-21-93,5-17-95, 3-20-96;.12-18-96; and9-15-1999.)

CONTENTS
PART 1 GENERAL 4 1.1 Purpose 4 1.2 Applicability 4 1.3 Exemptions 4 1.4 Effective Date 6 1.5 References 6 1.6 Permit Denial 6 PART 2 DEFINITIONS 7 2.1 Affected Pollutants 7 2.2 AirBasin 7 2.3 AirPollution Control Officer (APCO) 8 2.4 Air Quality Impact Table 8 2.5 Air Quality Increment 8 2.6 Air Resources Board (ARB) 9 2.7 Ambient Air Quality Standards 9 2.8 Area A Impact Zone 9 2.9 Authority to Construct 10 2.10 Best Available Control Technology (BACT) 10 2.11 California Coastal Waters

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.12 Cargo Carriers 11 2.13 Chlorofluorocarbon (CFC) 11 2.14 Class I Area 11 2.15 Complete Application 12 2.16 Contiguous Property 12 2.17 Cost-Effective 12 2.18 Designated Areas, A, B, C, D, E, and F 12 2.19 District 14 2.20 District Board 14 2.21 Emissions Increment 14 2.22 Emission Reduction Credit (ERC) 15 2.23 Enforceable EmissionReduction 15 2.24 Exempt Compounds 15 2.25 Federal Land Manager 15 2.26 Federally Enforceable Condition 15 2.27 Fugitive Emission 15 2.28 Hydroch10rofluorocarbon (HCFC) 15



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### 2.29 Hydrofluorocarbon (HFC) 16 2.30 MajorModification to an Existing Source 16 2.31 Major Stationary Source 16 2.32 Modification 16 2.33 National Ambient Air Quality Standards (NAAQS) 17 2.34 NetAir Quality Benefit 17 2.35 Net Emissions Increase 17 2.36 New Emissions Increase 18 2.37 New Source 18 2.38 New Source Review (NSR) 18 2.39 Nitrogen Oxides (NOx) 18 2.40 NonattainmentPollutant 18 2.41 Offset 19 2.42 Permanent Emission Reduction 19 2.43 Permit to Operate 19 2.44 Permit Unit 19 2.45 PMIO •••••••••••••.••••••••••••••••••••••••••••••••••••••••••.•••• 

### 19 2.46 Pollutant 19 2.47 Potential to Emit 20 2.48 Precursor 20 2.49 Prevention ofSignificant Deterioration (PSD) 20 2.50 Quantifiable Emission Reduction 20 2.51 Real Emission Reduction 21 2.52 Reconstructed Source 21 2.53 Seasonal Source 21 2.54 Source 21 2.55 State AmbientAir Quality Standards 21 2.56 State Implementation Plan (SIP) 21 2.57 Stationary Source 22 2.58 Sulfur Oxides (SOx) 22 2.59 Surplus Emission Reduction 22 2.60 Total SuspendedParticulates (TSP) 23 2.61 Upwind Areas 23 2.62 Volatile Organic Compounds (VOCs) 23 PART 3 GENERAL REQUIREMENTS 23 3.1 Pre-Construction and Post-Construction AirMonitoring 23 3.2 Visibility, Soils, and VegetationAnalysis 24 3.3 Ambient Air Quality Standards and Emission Increments 24 3.4 Mandated Reductions 24 3.5 Source Shutdowns and Curtailments 24 3.6 Interpollutant Offsets 24 PART 4 FEDERAL CLEANAIRACT REQUIREMENTS 25 4.1 BestAvailable Control Technology (BACT) Requirements 25 4.2 OffsetRequirement, General 26 4.3 Location ofOffsets and Offset Ratios 28 4.4 Offsets, Seasonal Sources 30 4.5 Protection ofClass I Areas 30

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### PART 5 CALIFORNIA CLEAN AIR ACT (CCAA) REQUIREMENTS 31 5.1 Parallel Review and Stringency ofRequirements 31 5.2 CCAA BestAvailable Control Technology (BACT) Requirements 31 5.3 CCAA Offset Requirements 31 5.4 CCAA Stationary Source Calculations 31 PART 6 ADMINISTRATIVE REQUIREMENTS 32 6.1 Alternative Siting 32 6.2 Complete Application 32 6.3 Proposed Sources in Federal Class I Areas 32 6.4 Preliminary Decision 33 6.5 Air Quality IncrementAnalysis 33 6.6 Review ofAir QualityIncrement Consumption 33 6.7 Air Quality Models 34 6.8 Publication and Public Comment 34 6.9 Public Inspection 34 6.10 Authority to Construct, Final Action 34 6.11 Requirements, Permit to Operate 34 6.12 Issuance, Permitto Operate 35 6.13 Regulations in Force will Govern 35 PART 7 CALCULATIONS 36 7.1 Determination ofthe Potential to Emit 36 7.2 Historical Emissions from Existing Sources 36 7.3 General Stationary Source Calculations 36 7.4 Increases in Emissions: Calculation Requirements for BACT and Offsets 37 7.5 Increases in Emissions: Seasonal Source Calculations 37 7.6 Calculation Requirements for Emissions Reductions 38 PART 8 POWER PLANTS 38 8.1 General 38 8.2 Intent to Participate and Preliminary Report 38 8.3 Determination ofCompliance Review 39 8.4 Equivalency ofAPC for an Authority to Construct 39 8.5 Need for Additional Information 39 8.6 Preliminary Determination 39 8.7 Determination ofCompliance 40 8.8 Permitto Operate 40 PART 9 SOURCE IMPACT ANALySIS 40 9.1 Air QualityImpactAnalysis 40 9.2 Downwind Concentrations 40 9.3 Example Calculations 41 9.4 Air Quality Impact Table 42 PART 10 FEDERAL ENFORCEABILITY, SIP REVISIONS 42 10.1 Increments for Carbon Monoxide, Nitrogen Dioxide, Hydrogen Sulfide, and Lead

................................................................. 42 10.2 Subsection 2.5.2 ofthis Rule 42 10.3 Subsection 2.18.6 ofthis Rule 43
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10.4 Section 2.21 ofthis Rule 43 10.5 Part 5 ofthis Rule 43

PART 1 GENERAL
1.1 Purpose This Rule provides for the review ofnew and modified stationary airpollution sources to meet: requirements for the review ofnew and modified stationary sources (NSR) and for the Prevention ofSignificant Deterioration (PSD), under the provisions ofthe federal Clean Air Act; and requirements for NSR under the provisions ofthe California Clean Air Act). The intent ofthis Rule is to insure that the most stringent requirements ofthese programs shall be applied. This Rule provides mechanisms by which Authorities to Constructmay be granted to such sources without interfering with the attainment or maintenance ofambient air quality standards.
1.2 Applicability This Rule shall apply to all new stationary sources and all modifications to existing stationary sources which, after construction ormodification, emit orhave the potential to emit any affectedpollutants, as defined in Section 2.1 herein.
1.3 Exemptions 1.3.1 Exemption: Gasoline Storage and Dispensing. Gasoline storage and dispensing equipment subjectto DistrictRules 418 (Transfer ofGasoline into Stationary Storage Containers) and 1002 (Transfer ofGasoline into Vehicle Fuel Tanks) shall be exempt from the requirements ofthis Rule. 1.3.2 Exemption: Rule Compliance. The requirements ofSections 4.1, 4.2,5.2 and 5.3 of this Rule shall not apply to modifications made to an existing source solely to comply with regulatory requirements orprohibitory rules and where there is no actual orpotential emissions increase. 1.3.2.1 The requirements ofSections 4.2 and 5.3 shall not apply for any emission increase at a source that results from the installation, operation, orother implementation ofany emission control device ortechnique used to comply with a District, state, or federal emission control requirement, including, but not limited to, requirements for the use ofreasonably available control


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1.3.3.2

1.3.3.3

1.3.3.4
1.3.3.5 the source is not a federal major source, as defined by Title 40, Code ofFederal Regulations, Part 51, Section 165 (40 CFRPart 51.165); and it is determined through the use ofthe air quality impact table in Section 9.4, or through air quality modeling, as in Section 9.1 herein, that emissions from the new ormodified stationary source will result in a net air quality benefit and will not cause or contribute to the violation ofany ambient air quality standard or emissions increment established pursuant to this Rule; and ' the source will utilize unique and innovative control technology which will result in a significantly lower emission rate for the above-specified pollutant from the installation than would have occurred with the use ofpreviously known best available control technology (BACT); and the above-specified technology will likely serve as amodel for technology to be applied to similarinstallations within the state; and emission reductions which create the air quality benefit must occurby the time a new ormodified source commences operation, be quantifiable, real, surplus, permanent, enforceable and meet the requirements ofSections 3.4, 6.11, and 6.12 herein. 1.3.3.6 Ifthe source meets all criteria except Subsection 1.3.3.1 ofSubsection 1.3.3 above, the Districtmay only exemptthe applicant from the requirements of Sections 4.1 and 5.2 ofthis Rule for a specified pollutant. 1.3.4 The District shall withdraw any approval to employ a system ofinnovative control technology approved underthis Rule if: 1.3.4.1

1.3.4.2
1.3.4.3 the proposed system fails to achieve the required continuous emission reductionrate within atime period specified by the District in the Authority to Construct, orthe Permitto Operate, not to exceed two years from the date of initial startup; or the proposed system contributes to an unreasonable risk to public health, welfare, or safety; or the proposed systembecomes apublic nuisance. 1.3.5 Ifa source ormodification fails to meet the required level ofcontinuous emissions reduction orits approval is withdrawnpursuant to this Section, the Districtmay allow the source up to an additional two years to meet the requirements ofBACT.


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1.3.6 Ifa source ormodification fails to meet the required level ofcontinuous emissions reduction or its approval is withdrawn pursuant to this Section, the source shall provide offsets for the residual emissions that were not offset. 1.3.7 Exemption: Expired orRevoked Permit. The owner or operator ofa source whose Districtpermithas expired orbeen revoked for nonpayment offees underthe provisions ofRegulation III (Fees), who subsequently applies for reissuance ofa permit for that source, shall be exempt from the provisions ofthis Rule provided no modifications have been made to the source since that source last held avalid Districtpermit.
1.4 Effective Date This Rule as most recently revised is effective on September 15, 1999.
1.5 References 1.5.1 The requirements ofthis Rule arise from the provisions ofthe California Clean Air Act and amendments (Health and Safety Code Section 40910 etseq.) and the federal Clean Air Act and amendments (42 U.S.c. Section 7401 etseq.) 1.5.2 Otherrelated orreferenced Districtrules orregulations include: Rule 101 (Definitions); Rule 200 (Permits Required); Rule 201 (Sources Not Requiring Permits); Rule 215 (Banking ofEmissions Reductions); Rule 218 (Title V: Federal Operating Permits); Regulation III (Fees); Rule 418 (Transfer ofGasoline into Stationary Storage Containers); and Rule 1002 (Transfer ofGasoline into Vehicle Fuel Tanks).
1.6 Permit Denial The District shall deny an Authority to Construct or a Permit to Operate for any new stationary source ormodification to an existing source unless: 1.6.1 the new source ormodification complies with all applicable rules and regulations; and 1.6.2 the applicant certifies that all othermajor stationary sources, which are owned or operatedby suchperson (orby any entity controlling, controlledby, orunder common control with such aperson) in California and which are subjectto emission limitations are in compliance, or on a schedule for compliance, with all applicable emission limitations and standards.

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PART 2 DEFINITIONS
Forthe purpose ofthis Rule, the definitions below shall apply. 2.1 Affected Pollutants These species include: 2.1.1 all pollutants for which an ambient airquality standard has been established by the United States Environmental Protection Agency or the Air Resources Board, as well as the precursors to such pollutants; and 2.1.2 all pollutants regulated by the United States Environmental Protection Agency under the federal Clean Air Act orby the AirResources Board under the Health and Safety Code; and 2.1.3 all the pollutants which the United States Environmental Protection Agency afterthe notice and opportunity for public comment, or, the AirResources Board, orthe District afterpublic hearing, determine may have significant adverse effect on the environment, the public health, or the public welfare; and 2.1.4 include, but are not limited to: 2.1.4.1 2.1.4.2 2.1.4.3 2.1.4.4 2.1.4.5 2.1.4.6 2.1.4.7 2.1.4.8 2.1.4.9 2.1.4.10 2.1.4.11 2.1.4.12 2.1.4.13 2.1.4.14 2.1.4.15 2.1.4.16 2.1.4.17 volatile organic compounds (VOCs), nitrogen oxides (NOJ, sulfur oxides (SOx), particulate matter less than 10 micrometers in aerodynamic diameter (PM lO), total suspended particulates (TSP), carbon monoxide (CO), ethylene, vinyl chloride, asbestos, beryllium, lead, mercury, fluorides, sulfuric acid mist, hydrogen sulfide (H2S), total reduced sulfurcompounds, and reduced sulfur compounds.
2.2 AirBasin The geographic areacontaining Monterey, SanBenito, and Santa Cruz counties.

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2.3 Air Pollution Control Officer (APCO) The Air Pollution Control Officerfor the Monterey Bay Unified AirPollution Control District, orhis/her authorized representative.
2.4 Air Quality Impact Table An air quality simulation table used to estimate maximum ground level impacts ofa source ofemissions ofTSP, CO, oxides ofsulfur and oxides ofnitrogen, assuming one hundredpercent conversion ofnitrogen oxides into N02and calculating all emissions of sulfur oxides as S02 (table contained in Section 9.4 herein). 2.5 Air Quality Increment A maximum allowable increase in concentration ofapollutant, beyond baseline, as establishedby the DistrictBoard and at least as stringent as provided in the federal Clean Air Act provisions in Section 163(b)and 40 CFR Part 51.166; or, for pollutants for which no increment has been established pursuantto the federal Clean AirAct, a maximum allowable increase in concentration ofapollutant as established by the District Board. 2.5.1 In establishing air quality increments for sulfur dioxide and TSP, the District Board shall take into consideration the impact ofemissions on neighboring areas. Baseline airquality shall be the ambient concentration level reflecting actual air quality as monitored ormodeled as ofthe existing baseline date ofJuly 18, 1979, minus any contribution attributable to emissions from major stationary sources and modifications constructed since January 6, 1975. In establishing airquality increments for carbon monoxide, hydrogen sulfide, and lead, baseline air quality shall be the ambient concentration as ofJanuary 1, 1984. In establishing air quality increments for nitrogen dioxide, the baseline airquality shall be the ambient concentration as ofFebruary 8, 1988. Air quality increments for PM IO are in effect as ofAugust 19, 1983. 2.5.2 In accordance with the criteriacontained in Subsection 2.5.1 herein, the District Board defines the following increments ofallowable air quality degradation, beyond the existing air quality levels, for pollutants for the respective areas indicated as designated attainment:



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Table 2.5.2 District Board-Defined Air Quality Increments Allowable Air Quality Degradation Beyond Existing Air Quality Levels
Pollutant Designated Designated Designated Averaging Area A and Areas C, D, Areas Band E Period AreaA Impact andF Zones (ug/m3) (ug/m3) (ug/m3) Carbon Monoxide (CO) 4,000 8,000 12,000 I-hour Nitrogen Dioxide (NO,) 2.5 20 25 annual Hydrogen Sulfide (H,S) 4.2 8.4 12.6 I-hour Lead .15 .30 .45 30-day TSP 5 5 19 annual 10 10 37 24-hour PMIQ 2.8 2.8 10.8 annual 5.7 5.7 21.1 24-hour SulfurDioxide (S02) 2 2 20 annual 5 5 91 24-hour 25 25 512 3-hour

2.6 Air Resources Board (ARB) State ofCaliforniaAir Resources Board.
2.7 Ambient Air Quality Standards SeeNational Ambient Air Quality Standards and State Ambient Air Quality Standards.
2.8 Area A ImpactZone All lands outside ofthe designated Area(s) A butwithin a 15-mile distance beyondthe boundary ofthe designated Area(s) A, or other areas establishedby the Districtbased on standard meteorological techniques such as hourly wind roses, frequency distribution of atmospheric wind classes, morning and afternoon mixing depths and any other meteorological or geographical considerations needed to establish the Area A Impact Zone. See Subsection 2.18.1 herein for the definition ofdesignated Area(s) A.

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2.9 Authority to Construct A written pennit, as provided by Part 3.1 ofRule 200, issued by the Districtto a specific applicant: 2.9.1 prior to the building, erection, alteration, orreplacement ofany article, machine, equipment or other contrivance which may cause the issuance ofair contaminants or the use ofwhich may eliminate, reduce or control the issuance ofair contaminants; or 2.9.2 alternatively, to create federally enforceable conditions, accepted voluntarily by a source for purposes oflimiting its potential emissions, applicable to any article, machine, equipment or other contrivance which may cause the issuance ofair contaminants or the use ofwhich may eliminate, reduce or control the issuance ofair contaminants. 2.9.3 Application Deemed Complete The District's action ofdeeming an Authority to Construct application complete, or the California Energy Commission's action ofaccepting an Application for Certification (AFC). 2.9.4 Authority to Construct is Issued The District's action ofgranting an Authority to Construct, or the CaliforniaEnergy Commission's action ofissuing its affinnative decision on an Application for Certification (AFC).
2.10 Best Available Control Technology (BACT) For any stationary source the most stringent ofthe following, unless the applicant demonstrates to the satisfaction ofthe Districtthat such limitations imposed on other sources are not achievable: 2.10.1 the most effective emission control device or technique which has been required or used for the type ofequipment comprising such a category ofstationary source; or 2.10.2 the most stringent emissions limitation which has beenrequired orused for the type ofequipment comprising such a category ofstationary source; or 2.10.3 any other emission control device or technique detennined to be technologically feasible and cost-effective by the District. 2.10.4 BACT shall not be less stringent than the emission control requiredby any applicable provision ofDistrict, ARB, State, or federal laws orregulations, unless the applicant demonstrates to the satisfaction ofthe Districtthat such limitations are not achievable.



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2.10.5 In no event shall the application ofBACT result in the emissions ofany pollutant which exceed the emissions allowed by any applicable standard in 40 CFR Part 60 (New Source Performance Standards), orin 40 CFR Part 61 (National Emission Standards for Hazardous Air Pollutants), orin 40 CFR Part 63 (National Emission Standards for Hazardous Air Pollutants for Source Categories).
2.11 California Coastal Waters Those waters that are between the Californiacoastline and a line starting at the California-Oregon border at the Pacific Ocean: thence to 42.0 N 125.5 W; thence to 41.0 N 125.5 W; thence to 40.0 N 125.5 W; thence to 39.0 N 125.0 W; thence to 38.0 N 124.5 W; thence to 37.0 N 123.5 W; thence to 36.0 N 122.5 W; thence to 35.0 N 121.5 W; thence to 34.0 N 120.5 W; thence to 33.0 N 119.5 W; thence to 32.5 N 118.5 W; and, ending at the California-Mexico border at the Pacific Ocean.
2.12 Cargo Carriers Cargo carriers include trains and marine vessels dedicated to a specific stationary source.
2.13 Chlorofluorocarbon (CFC) The family ofchemical compounds containing carbon, fluorine and chlorine; containing at least one carbon atom and having no hydrogen atoms and no double bonds; and which includes, without limitation, trichlorofluoromethane (CFC-11), dichlorodifluoromethane (CFC-12), 1,1 ,2-trichloro-l,2,2-trifluoroethane (CFC-113), 1,2-dichloro-1,1,2,2-tetrafluoroethane (CFC-114), and chloropentafluoroethane (CFC-115).
2.14 Class I Area Any areahaving air quality or air quality related values requiring special protection, which has been designated Class I by a federal or state authority empowered to make such a decision.

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2.15 Complete Application Completeness ofan application for an Authority to Construct a new ormodified stationary source shall be evaluated on the basis ofthe list ofrequired information which was adopted by the Districtpursuant to Article 3, Sections 65940 through 65944 ofChapter4.5 ofDivision 1 ofTitle 7 ofthe Government Code as it exists on the date on which the application is received.
2.16 Contiguous Property Two ormore parcels ofland with a common boundary or separated solely by apublic roadway or otherpublic right-of-way.
2.17 Cost-Effective A costper unit ofemissions reduction which is lower than or equivalent to the maximum unit costs ofthe same emission reduction through the use ofBACT calculated in current year dollars.
2.18 Designated Areas, A, B, C, D, E, and F Forthe purposes ofimplementing the provisions ofthis Rule the following locations, which are shown in Figure 1, are recognized as designated areas A, B, C, D, E, and F, respectively: 2.18.1 Area(s) A includes locations determined as Class I areas mandated by the federal Clean Air Act and amendments (42 U.S.c. Section 7401 etseq.) The Class I areas located within the boundaries ofthe District designated Areas A include the Pinnacles National Monument and the VentanaNational Wilderness. 2.18.2 Area(s) B includes the entirety ofSan Benito County except those areas designated as AreaA or AreaA Impact Zones; 2.18.3 Area(s) C includes the City ofCarmel-by-the-Sea and the Carmel Valley south to the San Luis Obispo County line, including the Big Sur Coast, and the area described by the boundary commencing with the northern city limits ofCarmel at the Pacific Ocean, and is coterminous with the northern Carmel city limits to SerraAvenue; then follows SerraAvenue to Highway 1, north to Aguajito Road, to Lorna Alta Road up to Jacks Peak Park; is bordered on the northby the southernboundary ofthe Jacks Peaks Park; then proceeds easterly to the west crest ofthe Sierra De Salinas Mountain Range; then continues in a southeasterly direction to the Palo Escrito Mountain Peak; through the Middle ofBear Canyon, following Cachagua Conejo Creek; up Pine Creekto thejunction ofthe Los Padres National Forestboundary; is bordered on the eastby the easternborderof the Los Padres National Forest from the Pine Creekjunction in a southerly



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### MONTEREY BAY UNIFIED AIR POLLUTION CONTROL DISTRICT REGULATION II PERMITS Figure 1. Map ofDistrict Designated Areas

AreaA: Pinnacles NationalMonument, VentanaWJ.1demess Area 

# II LJ 

# o [I1J Area B: SanBenitoCountyotherthanAreaA andAreaA ImpactZones Area C: 

### Carmel-By-The-Sea, CarmelValley, and

### theBigSurCoastotherthan AreaA AreaD: SantaCruzCounty AreaE: MontereyCountyotherthanAreasA, C, &: F, andAreaA ImpactZones AreaF: SanAntonio

### Valley
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direction to the San Luis Obispo County line, including all lands within the area defined above except those areas designated as Area A orArea A ImpactZones; 2.18.4 2.18.5
2.18.6

2.18.7 Area(s) D includes the entirety ofSanta Cruz County; Area(s) E includes the entirety ofMonterey County except areas designated A, C, F orArea A Impact Zones; and, Area(s) F includes the area described by the boundary starting at the northern intersection ofthe boundary ofthe federal reservation ofFt. Hunter Liggett and Highway G-14 (Jolon Highway); proceeding north along G-14 3.5 miles to the mouth ofCrazy Canyon; up Crazy Canyon southeastto the crest ofthe SierraDe Salinas Mountains; then in a general southeasterly direction crossing Highway G-18 at benchmark 352.9; proceeding still southeasterly along the crest ofthe ridge line to Sulphur Canyon Road, approximately I mile downstream from the San Antonio Dam; west along the road to the boundary between Monterey and San Luis Obispo Counties, following the county line west to the western intersection ofHighway G-14 and the county boundary; northwest along Highway G-14 to the southern intersection ofHighway G-14 and the reservation boundary ofFt. Hunter Liggett; then following the eastern boundary ofFort HunterLiggett to the northern intersection ofthe reservationboundary and Highway G-14. Other areas within the Districthaving air quality or air quality related values requiring special protection may be redesignated to amore protective designation by the District Board afterholding apublic hearing, noticed 30 days in advance, to considerpublic input concerning such designation.
2.19 District Refers to the Monterey Bay Unified AirPollution Control District (MBUAPCD) and its authorized representatives.
2.20 District Board Refers to the Monterey Bay Unified AirPollution Control DistrictBoard.
2.21 Emissions Increment The increase in emissions ofany pollutant which can be allowed in an areawithout causing the exceedance ofany air quality increment.

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2.22 Emission Reduction Credit (ERC) An actual emission reduction ofspecific type and quantity that is registered with the District in accordance with Rule 215. Must be surplus, quantifiable, permanent, real and enforceable.
2.23 Enforceable Emission Reduction As defined by DistrictRule 215, an emission reduction which can be verified for accuracy by the District. In general, specifiedby restrictions imposed by conditions of an Authority to Construct andlor Permit to Operate.
2.24 Exempt Compounds As defined in DistrictRule 101, Definitions.
2.25 Federal Land Manager The Secretary ofthe Department with authority overthe specified federal lands.
2.26 Federally Enforceable Condition A condition that is enforceable by EPA and citizens under the Clean AirAct. Such conditions shall include emission limitations, controls, and otherrequirements that are permanent, quantifiable, and otherwise enforceable as apractical matter. Federally enforceable conditions established pursuant to Section 2.32.5 must meet the procedural requirements for public and EPA review in Sections 6.8, 6.9, and 6.10 ofthis Rule. Conditions in aDistrict Permit to Operate that meet the requirements 

### in this Rule for federally enforceable conditions shall be specifically designated as federally enforceable in the permit.
2.27 Fugitive Emission Any emission that could not reasonably pass through a stack, chimney, vent or other functionally equivalent opening.
2.28 Hydrochlorofluorocarbon (HCFC) Any member ofthe family ofchemical compounds containing hydrogen, carbon, fluorine and chlorine, and which includes, without limitation, chlorodifluoromethane (HCFC-22).

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2.29 Hydrofluorocarbon (HFC) Any member ofthe family ofchemical compounds containing hydrogen, carbon, and fluorine, and which includes, without limitation, trifluoromethane (HFC-23).
2.30 Major Modification to an Existing Source A modification to a stationary source in an airbasin which has been designated as being eitherin attainment ornonattainment ofnational ambient air quality standards, which may result in the potential to emit greater than the threshold levels provided by the federal Clean AirAct (42 U.S.C. Section 7401 

### etseq.) for that designation.
2.31 Major Stationary Source A stationary source in an airbasin which has been designated as being eitherin attainment ornonattainment ofnational ambient air quality standards, which has the potential to emit greaterthan the threshold levels provided by the federal Clean AirAct (42 U.S.c. Section 7401 

### etseq.) for that designation.
2.32 Modification May be any ofthe following: 2.32.1 Any physical change, change in method ofoperation of, or addition to an existing stationary source that would result in an actual orpotential emissions increase from any permit unit (as defined in Part 2 herein) or sum ofpermit units under consideration as aresult ofthe proposed modification; or 2.32.2 any physical change, change in method ofoperation of, or addition to an existing stationary source for which an application to bank emissions reductions credits is submitted to the District; or 2.32.3 any process orprocess material change, including alternate fuels, production or raw materials, that would result in an actual orpotential emissions increase, unless specifically allowed by an Authority to Construct orPermitto Operate; or 2.32.4 any change in hours ofoperation orproduction rate which would necessitate a change inpermit conditions ofan Authority to Construct orPermit to Operate; or 2.32.5 any change to a DistrictAuthority to Construct orPermitto Operate to establish federally enforceable conditions in the permitthat are accepted voluntarily by the source for purposes oflimiting its potential emissions. 2.32.6 A reconstructed source, as defined in Section 2.52 herein, shall be treated as a new stationary source.



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2.32.7 Unless previously limited by apermit condition ofan Authority to Construct or a Permit to Operate, the following shall not be considered physical changes: 2.32.7.1 routine maintenance orrepair; or 2.32.7.2 transfer oflocation ofany article, machine, equipment or other contrivance for which a Permit to Operate has previously been granted underRule 200, and for which no alteration or addition has been made. 2.32.8 Unless previously limited by apermit condition ofan Authority to Construct or a Permit to Operate, the following shall notbe considered changes in the method of operation: 2.32.8.1 an increase in the production rate ifsuch an increase doesnot exceed the operating design capacity orthe actual demonstrated capacity ofthe stationary source as approved by the District in the Authority to Construct and Permit to Operate; or 2.32.8.2 a change in ownership; or 2.32.8.3 areplacement ofapiece ofequipment with an identical piece ofequipment with emissions less than or equal to those from the original piece ofequipment.
2.33 National Ambient Air Quality Standards (NAAQS) Air quality standards setby the Administrator ofthe United States Environmental Protection Agency to protectpublic health and welfare and, in general, consisting of primary and secondary standards. Primary standards are to protect the public health, while secondary standards are intended to protect the public welfare, 

### e.g., plants, crops, and materials.
2.34 Net Air Quality Benefit A net improvement in air quality resulting from actual emissions reductions impacting the same general area affected by the new ormodified source and which will be consistent with reasonable furtherprogress.
2.35 Net Emissions Increase 2.35.1 The sum ofall increases inpotential emissions ofany givenpollutant except PM IO from a new ormodified stationary source occurring since July 15, 1976, minus any reductions in emissions ofthatpollutant at the stationary source occurring since July 15, 1976, calculated according to the provisions ofPart 7 ofthis Rule; or 2.35.2 the sum ofall increases in potential emissions ofPMIO from a new ormodified stationary source occurring since August 19, 1983, minus any reductions in


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emissions ofPM10 at the stationary source occurring since August 19, 1983, calculated according to the provisions ofPart 7 ofthis Rule. 2.35.2.1 The PM IO emissions from an existing stationary source shall be recalculated from the TSP emission increases and reductions which have occurred since August 19, 1983 using PM IO emission factors. When PM IO emissions factors do not exist, 50 percent ofthe total TSP shall be assumed to be PM IO• All TSP emission increases and decreases occurring prior to August 20, 1983 are zeroed. 2.35.2.2 Ifthe applicant has provided full offsets for TSP emissions occurring since August 19, 1983 butbefore April 21, 1993 those TSP emissions need not be recalculated as PMIO because the net emissions increase at the time ofthe offset is considered zero.
2.36 New Emissions Increase The sum ofall increases in potential emissions ofany given pollutant from a new or modified stationary source. The increases shall be calculated according to the provisions ofPart 7 ofthis Rule.
2.37 New Source A location at which new equipment is being installed, on or after the appropriate applicability date, which does not currently hold a valid District Authority to Construct orPermitto Operate. Forthe purposes ofPart 4 ofthis Rule, the applicability date shall be July 15, 1976. Forthe purposes ofPart 5 ofthis Rule, the applicability date shall be April 21, 1993.
2.38 New Source Review (NSR) A system designed, through the use ofapermitting program applicable to new or modified sources, to reduce ambient air concentrations ofpollutants for which specific areas have been designated as nonattainment.
2.39 Nitrogen Oxides (NOx) The molecular forms ofnitrogen oxide and nitrogen dioxide. When measured or calculated, the total ofthe two molecular forms as nitrogen dioxide.
2.40 Nonattainment Pollutant Any pollutant for which an ambient air quality standard was exceeded within the air basin more than three discontinuous times (or, for annual standards, more than one

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2.41 Offset Where used as a noun, an emission reduction from an existing source, whether or not under the same ownership as aproposed project, that is necessary to mitigate an emission increase ofan affected pollutant from the proposed project that would otherwise preventthe lawful issuance by the District ofan Authority to Construct or a Permit to Operate. When used as averb, the process ofproviding such an emission reduction.
2.42 PermanentEmission Reduction As defined in DistrictRule 215, an emission reduction which is assured for the life of the corresponding increase, whether limited orunlimited in duration, and that the benefits ofthe emission reduction do not diminish or disappear overtime.
2.43 Permit to Operate A written permit, as provided by Part 3.1 ofRule 200, with any specified conditions required, issued by the Monterey Bay Unified AirPollution Control Districtto a specific applicant for the operation oruse ofany article, machine, equipment or other contrivance which may cause the issuance ofair contaminants orthe use ofwhich may eliminate, reduce orcontrol the issuance ofair contaminants.
2.44 PermitUnit A piece ofequipment, product line, system, unit, process line orprocess that produces a product orperforms a function independently ofother equipment, product lines, systems, units, process lines orprocesses. (From DistrictRule 101, Definitions.)
2.45 PM10 Particulate matterwith aerodynamic diameter smallerthan or equal to anominal 10 micrometers**(~m)** as measuredby an appropriate reference test method.



### ( 2.46 Pollutant See Affected Pollutant.
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2.47 Potential to Emit The maximum daily capacity ofa permit unit to emit a pollutant under its physical and operational design. Any physical or operational limitation on the daily capacity ofthe unit to emit a pollutant, including pollution control equipment and restrictions in hours or operation, or on the type or amount ofmaterial combusted, stored orprocessed, shall be treated as part ofits design only ifthe limitation, or the effect it would have on daily emissions, is incorporated into the applicable Authority to Construct and Permit to Operate as an enforceablepermit condition.
2.48 Precursor A directly emitted pollutant that, when released to the atmosphere, forms or causes to be formed or contributes to the formation ofa secondary pollutant for which a national ambient air quality standard has been adopted, orwhose presence in the atmosphere will contribute to the violation ofone ormore national ambient air quality standards. The following precursor-secondary pollutantrelationship shall be used for purposes ofthis Rule:

2.48.1

2.48.2

2.48.3 Precursor volatile organic compounds (VOCs)
nitrogen oxides (N0x)

sulfur oxides (SOx) Secondary Pollutant 1) ozone 2) organic fraction ofparticulate matter (PM IO) 1) ozone 2) nitrogen dioxide (N02) 3) nitrate fraction ofparticulate matter (PM IO) 1) sulfur dioxide (S02) 2) sulfates (S04) 3) sulfate fraction ofparticulate matter (PM10)
2.49 Prevention ofSignificant Deterioration (PSD) A system designed, through the use ofapermitting program applicable to new or modified sources, to avert consequential increases in ambient air concentrations of pollutants for which specific areas have been designated as either attainment or unclassifiable under federal guidelines.
2.50 Quantifiable Emission Reduction As defined in District Rule 215, an emission reduction, the rate and characteristics of which canbe determined by the District with reasonable accuracy. Quantificationmay
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be based on emission factors, stack tests, monitored values, operating rates and averaging times, process orproduction inputs, modeling, or otherreasonable measurement practices.
2.51 Real Emission Reduction As defined in District Rule 215, those emission reductions that have actually occurred, have been implemented and are not artificially devised.
2.52 Reconstructed Source Any source undergoing physical modification where the fixed capital cost ofthe new components exceeds 50 percent ofthe fixed capital cost ofa comparable entirely new stationary source. Fixed capital cost means that capital needed to provide all the depreciable components.
2.53 Seasonal Source Any source with more than 75 percent ofits annual emissions within a consecutive 90-day period.
2.54 Source See Stationary Source.
2.55 State Ambient Air Quality Standards Air quality standards setby the California AirResources Control Board "in consideration ofthe public health, safety, and welfare, including, but not limited to, health, illness, irritation to the senses, aesthetic value, interference with visibility, and the effects on the economy" (California Health and Safety Code Section 39606 [bD. A distinction is not made between standards to protectpublic health and welfare, 

### i.e., primary and secondary standards.
2.56 State Implementation Plan (SIP) Plan which is required to be submitted by each State under42 U.S.C. Section 7401 et 

### seq. (federal Clean Air Act) to achieve and maintain national ambient air quality standards (NAAQS).

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2.57 Stationary Source Any building, structure, facility, or installation which emits or may emit any affected pollutant directly or as a fugitive emission. 2.57.1 Installation includes any operation, article, machine, equipment or other contrivance which emits ormay emit any affected pollutant. 2.57.2 Building, structure, or facility includes all pollutant emitting activities, including activities located in California coastal waters adjacent to the Districtboundaries which: 2.57.2.1 belong to the same industrial grouping; 2.57.2.2 are located on one ormore contiguous or adjacentproperties (except for activities located in coastal waters); and, 2.57.2.3 are under the same or common ownership, operation, or control or which are owned or operated by entities which are under common control. 2.57.3 Pollutant emitting activities shall be considered as part ofthe same industrial grouping if: 2.57.3.1 they belong to the same two-digit standard industrial classification code, or, 2.57.3.2 they are part ofa commonproductionprocess. (Common production process includes industrial processes, manufacturing processes, and any common raw material). 2.57.4 The emissions within Districtboundaries and California coastal waters as defined in Section 2.11 herein, from cargo carriers associated with the stationary source shall be considered emissions from the stationary source to the extentprovided in Subsections 7.3.4, 7.3.4.1, and 7.3.5 herein.
2.58 Sulfur Oxides (SOx) The chemical species ofsulfur dioxide and sulfurtrioxide. When measured or calculated, the total ofthe two chemical species as sulfur dioxide.
2.59 Surplus Emission Reduction As defined in District Rule 215, emission reductions not already encumbered by any federal, State, ARB, District, or local agreement, law, order, plan, regulation, requirement, orrule.

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2.60 Total Suspended Particulates (TSP) Any airborne finely divided solid or liquid material with an aerodynamic diameter less than 100 micrometers (Ilm).
2.61 Upwind Areas The areabounded by a line passing through the site ofthe new ormodified source perpendicularto the predominant summerwind flow line and extending to the boundaries ofthe same airbasin in the direction opposite the predominant summerwind flow, exceptwhere the District determines that for reasons oftopography or meteorology such a definition is inappropriate.
2.62 Volatile Organic Compounds (VOCs) As defined in District Rule 101, Definitions.

PART 3 GENERAL REQUIREMENTS Any source subject to this Rule shall be subject to the following requirements.
3.1 Pre-Construction and Post-Construction Air Monitoring The owner or operator ofa stationary source subject to the requirements ofthis Rule shall conduct ambient air quality monitoring as the District finds necessary to determine the effect emissions from the stationary source ormodification may have, or are having, on air quality in the area. All monitoring shall comply with United States Environmental Protection Agency guidelines for monitoring (40 CFR Part 58, Appendix B). 3.1.1 Pre-construction air quality monitoring datamustbe gathered over aperiod ofone yearpreceding the application ofthe source. Ifthe District determines that an adequate analysis canbe done over aperiod ofless than one year, butnot less than four months, the shorterperiod canbe used. Ifsufficientrepresentative monitoring data already exists for analysis, no monitoring will be required. 3.1.2 Post-construction air quality monitoring datamust be collected as deemed necessary by the Districtto determine the effect emissions from the stationary source or modification are having on air quality.



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3.2 Visibility, Soils, and Vegetation Analysis The applicant shall provide the District with analysis ofimpairment to visibility, soils, and vegetation, and the projected air quality impact for the area, that would occur as a result ofthe source or modification and general commercial, residential, industrial, and other growth associated with the source ormodification.
3.3 Ambient Air Quality Standards and Emission Increments In no case shall the emissions from the new ormodified stationary source, orin conjunction with otherincreases in emissions, cause or contribute to the violation ofan ambient air quality standard or exceed any airquality increment. The air quality impact table contained in Section 9.4 or appropriate air quality modeling as in Section 9.1 herein shall be used to estimate the effects ofanew ormodified source. In making this determination the District shall take into account the mitigation ofemissions through offsets obtained pursuant to this Rule.
3.4 Mandated Reductions Emission reductions requiredby any permits, agreements, orders, plans orrequirements offederal, State, AirResources Board, orDistrict laws, rules and regulations, orthe State Implementation Plan shall notbe used as offsets.
3.5 Source Shutdowns and Curtailments Source shutdowns and curtailments may not be given emission reduction credits in the case ofprecursor organic pollutants ifthey occurredpriorto the date ofapplication unless the proposed new source ormodification is areplacement at the same source, and the shutdown or curtailment occurred after August 7, 1977.
3.6 Interpollutant Offsets The Districtmay approve interpollutant offsets on a case-by-case basis, provided that the trade is technicallyjustified andthat the applicant demonstrates to the satisfaction of the District, through the use ofthe air quality impact table contained in Section 9.4 or by appropriate air quality modeling as in Section 9.1 herein, that the emission increases from the new ormodified source orin conjunctionwith otherincreases in emissions will result in anet air quality benefit and will not cause or contribute to aviolation ofan ambient airquality standard or exceed any airquality increment established pursuantto this Rule. In such cases, the District shall, based on air quality analysis, impose offset ratios greaterthan the requirements ofSection 4.3 herein. Interpollutanttrades between PM IO andPM IOprecursors may be allowed. PMIO emissions shall notbe allowed to offsetNOxorVOC emissions in ozone nonattainment areas. PMIO emissions shall not be allowed to offset SOx emissions in sulfate nonattainment areas.
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PART 4 FEDERAL CLEAN AIR ACT REQUIREMENTS
4.1 Best Available Control Technology (BACT) Requirements An applicant shall apply BACT to a new stationary source ormodification ofan existing source, except cargo carriers, for each affected pollutant, under the following conditions: 4.1.1 a new stationary source which has the potential to emit greaterthan or equal to any one ofthe affected pollutant levels listed in Table 4.1.1 below:
Table 4.1.1 Emission Thresholds for BACT
POLLUTANT EMISSION RATE IN POUNDSIDAY VOC 150 NO as NO, 150 SO as SO, 150 TSP 150 PM'A 82 CO 550 Vinyl Chloride 5.48 Asbestos 0.04 Beryllium 0.0022 Lead 3.28 Mercury 0.55 Fluorides 16.44 Sulfuric Acid Mist 38.35 Hydrogen Sulfide (H,S) 54.79 Total Reduced Sulfur Compounds (including 54.79 H,S) Reduced Sulfur Compounds (including H,S) 54.79
or, 4.1.2 a modification ofan existing stationary source which has the potential to result in a new emissions increase, as defined in Section 2.36 herein, occurring afterAugust 19,



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1983 for PM IO or after July 15, 1976 for any other affected pollutant, from any permit unit or sum ofpermit units from the same source ofan affected pollutantby an amount in excess ofany ofthe limits stated in Subsection 4.1.1 herein. 4.1.3 For a modified source, BACT shall be applied to the new ormodified equipment whose emissions triggerthe requirement for BACT. 4.1.4 A new source or modification subject to BACT for any pollutant subject to this Section shall apply BACT for any other affectedpollutant emitted from the new source ormodification, ifthe District should so require.
4.2 Offset Requirement, General 4.2.1 In Area A and Area A Impact Zones, offsets as specified in Subsections 4.3.1 and 4.3.2 herein shall be required from anew ormodified stationary source with net emissions increases equal to or exceeding 150 pounds per day ofvolatile organic compounds, ornitrogen oxides, or sulfur oxides, or total suspended particulates (TSP) or carbon monoxide; or 82 pounds per day ofPM IO• This information is summarized in table 4.2.2 below. 4.2.2 In areas other than Area A or Area A ImpactZones, offsets as specified in 4.3.3 shall be required for an affectedpollutant from a new ormodified stationary source with a net emissions increase equal to or exceeding 150 pounds per day for volatile organic compounds, ornitrogen oxides or sulfur oxides, ortotal suspended particu1ates(TSP); 550 pounds per day ofcarbon monoxide; or 82 pounds per day ofPM\O' as summarized in table 4.2.2 below: Table 4.2.2 Emissions Thresholds for Offsets
POLLUTANT EMISSIONS INCREASE IN EMISSIONS INCREASE AREA A AND AREA A IN B,C,D,E AND F IMPACT ZONES AREAS 

### voe 150 pounds per day 150 pounds per day NO asNO, 150 pounds per day 150 pounds per day SO as SO, 150 pounds per day 150 pounds per day 

### eo 150 pounds per day 550 pounds per day TSP 150 pounds per day 150 pounds per day PM,n 82 pounds per day 82 pounds per day 4.2.3 Offsets for increases in carbon monoxide shall notberequired ifthe applicant demonstrates to the satisfaction ofthe District, through the use ofthe airquality impact table contained in Section 9.4 ofthis Rule, orby approved air quality modeling as in Section 9.1 herein, that the ambient air quality standards are not



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violated in the areas to be affected, and such emissions will not cause or contribute to a violation ofambient air quality standards. 4.2.4 Offsets shall be actual, quarterly, enforceable emissions reductions for existing sources, sufficient to offset all anticipated quarterly emission increases as calculated according to Sections 7.3, 7.4 and 7.5 ofthis Rule, associated with new ormodified stationary sources and which will result in anet airquality benefit. 4.2.5 The amount ofoffsets obtained shall be at least equal to the net emissions increase from the proposed new source ormodification. 4.2.6 Increases in emissions shall be determined in accordance with the calculation methods described in Subsections 2.35.1, 2.35.2, Sections 7.3, 7.4 and 7.5 ofthis Rule, or an equivalent calculation procedure approved by the District. 4.2.7 Reductions in emissions shall be valid for determining net emissions increases only ifthey are established pursuant to an Authority to Construct and a Permitto Operate. 4.2.8 Mandated reductions ofemissions shall not be used as offsets, pursuantto Section 3.4 herein. 4.2.9 All emission reductions must be identified and enforceable priorto issuance ofthe Authority to Construct. 4.2.9.1 The emission reductions must be eligible under the provisions ofDistrictRule 215; and 4.2.9.2 must be entered in the DistrictERC Registry, unless the emission reductions are made at the same time as the permit application is made and on-site at the same stationary source. 4.2.9.2.1 For emission reductions made at the same time as the permit application is made and on-site at the same stationary source;permitmodifications to ensure permanent emission reductions must be made. 4.2.10 In no case shall exempt compounds as defined in Section 2.24 ofthis Rule, be used as offsets for volatile organic compounds as defined in Section 2.620fthis Rule. 4.2.11 Ifa source is required to obtain offsets for apollutantpursuantto this Section, then that source must obtain offsets, at least equal to the net emissions increase, for any increase in emissions ofall the following pollutants: volatile organic compounds, nitrogen oxides, sulfuroxides, total suspendedparticulates (TSP), and PMIO• 4.2.12 The Districtmay exempt a source from offsetrequirements for all the attainment pollutants, and any nonattainmentpollutants which do not exceed levels specified in Subsections 4.2.1 and 4.2.2 provided that the applicant demonstrates to the satisfaction ofthe District all ofthe following:

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4.2.12.1 that the requirement ofoffsets will result in little orno air quality benefit; and 4.2.12.2 that emissions offsets are not available orwould not be cost-effective; and 4.2.12.3 that any net emissions increases from the new ormodified stationary source or in conjunction with otherincreases in emissions will be consistent with reasonable further progress and will not cause a violation ofan ambient air quality standard or exceed an air quality increment.
4.3 Location ofOffsets and Offset Ratios Table 4.3 Summary ofOffset Ratio Requirements
Source Location!Area Ratio for Non-Attainment Ratio for Attainment Offset Obtained Pollutants Pollutants Area AJAreaA <15 miles 1.2:1 1.2: 1 radius Area A Impact Zone/Area A or 1.2: 1 1.2:1 Area A Impact Zone <15 miles radius Non-AJSarne Source <15 miles 1: 1 (or 1.15: 1 ifa major source 1:1 radius or maior modification) Non-AJDifferent Source <15 1.2: 1 1.1: 1 miles radius Non-AJ>15 miles radius 2:1 1.2: 1 Non-AJdifferent airbasin 2.5:1 1.3:1 4.3.1 The emissions from aproposed source, subjectto this Rule, which is to be located within an Area A must be offsetby emissions reductions obtained from within the same AreaA, at aminimum ratio of 1.2 to 1 and within a 15-mileradius ofthe proposed source ifthat will provide for a net airquality benefit; orat a ratio and distance to be approved by the Districtbased on air quality analysis ormodeling sufficientto demonstrate a net air quality benefit inthe AreaA. In no case shall the offsetratio for nonattainmentpollutants be lowerthan the 1.2 to I ratio required above in this Section. 4.3.2 Emissions from aproposed source, subjectto this Rule, which is to be located in an AreaA ImpactZone mustbe offsetby emissions reductions obtained from within the impact zone, or from the affected AreaA, at aminimumratio of1.2 to 1, and within a 15-mileradius ofthe proposed source ifthat will provide for a net air quality benefit; or at a ratio and distance to be approvedby the Districtbased on air quality analysis or modeling sufficient to demonstrate a net airquality benefitinthe AreaA. In no case shall the offsetratio for nonattainmentpollutants be lowerthan the 1.2 to 1 ratio required above in this Section.

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4.3.3 Emissions from aproposed source subject to this Rule which is to be located outside an AreaA or Area A Impact Zone are to be offset with emissions reductions from within a 15-mileradius ofthe proposed source. The emissions shall be offset at a minimum ratio of1 to 1 ifthe offsets are from the same source, unless the proposed source is amajor stationary source or amajormodification to an existing source. In such cases, the emissions shall be offset at a minimum ratio of 1.15 to 1 ifthe offsets are from the same source. The emissions shall be offset at a minimum ratio of1.2 to 1 for nonattainmentpollutants for offsets located outside ofthe proposed source but within the 15-mileradius and shall result in a net air quality benefit. The emissions for all otherpollutants designated in Section 4.2.2 herein shall be offset at a minimum ratio of1.1 to 1 for offsets located outside ofthe proposed source but within the 15-mileradius, and the District shall analyze the impact on the air quality increment. Based on air quality analysis ormodeling, approved by the District, which demonstrates a net air quality benefit, offsetratios and distances otherthan those above may be applied. In no case shall the offsetratios be lower than the ratios required above in this Section.

. 4.3.3.1 Ifan applicant demonstrates to the satisfaction ofthe Districtthat sufficient offsets do not exist at sources owned by the applicant, and are not available at other sources within a 15-mileradius ofthe proposed source, offsets shall be obtained from an upwind area within the airbasin at aminimum ratio of2.0 to 1 for nonattainment pollutants and minimum ratio of 1.2 to 1 for all other pollutants designated in Section 4.2.2 herein; or, at a ratio and distance to be approvedby the Districtbased on air quality analysis and modeling sufficient to demonstrate a net airquality benefit, orto demonstrate that no emissions increments will be exceededwithin the airbasin. In no case shall the offset ratios be lowerthan the ratios required above in this Section. 4.3.3.2 Ifan applicant demonstrates to the satisfaction ofthe District that sufficient offsets do not exist at sources ownedby the applicant, and are not available at an upwind area within the airbasin, offsets may be obtained from an upwind area outside the airbasin at a minimum ratio of2.5 to 1 for nonattainment pollutants and minimum ratio of1.3 to 1 for all otherpollutants designated in Section 4.2.2 herein; or, at aratio and distance to be approved by the District based on air quality analysis and modeling sufficientto demonstrate a net air quality benefit, or to demonstrate thatno emissions increments will be exceededwithin the airbasin. In no case shall the offsetratios be lowerthan the ratios required above in this Section. 4.3.3.2.1 Any offset creditedpursuant to Subsection 4.3.3.2 shall be approvedby a resolution adoptedby the governing board ofthe upwind district and the District Board. In adopting aresolution pursuantto this Subsection, the District Board shall considerthe impact ofthe offset on air quality, public health, and the regional economy. 4.3.3.2.2 The offsets may only be obtained from an upwind areathat has been designated by EPA to have a nonattainment status equal to ormore serious than the North Central Coast airbasin.



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4.3.3.2.3 The offsets may only be obtained from an upwind area that could contribute to violations ofthe national ambient air quality standards in the North Central Coast airbasin. 4.3.3.3 Ifan applicant demonstrates to the satisfaction ofthe District that sufficient offsets, for emissions that do not exceed ambient air quality standards, do not exist at sources owned by the applicant and are not available at other sources within a IS-mile radius or in an upwind area, the District may choose to allow an applicant to use a percentage, not to exceed 50 percent, ofthe remaining emissions increments, as determined by the District.
4.4 Offsets, Seasonal Sources Emissions offsetratios stated in Section 4.3 herein shall be required for new ormodified seasonal sources (as defined in Section 2.53 herein), provided that the offsets occur within the same season during which the seasonal source operates. Offsets obtained in a season other than that in which the proposed source will be operating may be used only ifthe applicant demonstrates to the satisfaction ofthe District that such interseason tradeoffs will result in a net air quality benefit.
4.5 Protection ofClass I Areas 4.5.1 Any new or modified stationary source shall be subject to the requirements ofthis Rule ifit will: 4.5.1.1

4.5.1.2 have any net emissions increase greater than zero pounds per day ofvolatile organic compounds, ornitrogen oxides, or sulfur oxides, or total suspended particulate; and be constructed within a designated AreaA orArea A Impact Zone afterJuly 18,1979;and 4.5.1.3 increase ambient pollutant concentration ofthe Area A by one microgram per cubic meter (24-hour average) ormore. 4.5.2 Any new ormodified stationary source shallbe subject to the requirements ofthis Rule ifit will:

( 4.5.2.1 4.5.2.2
4.5.2.3

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4.5.3 The air quality impact table in Section 9.4, or appropriate air quality modeling as in Section 9.1 herein, shall be used to estimate the impact ofthe source on Area A.

PART 5 CALIFORNIA CLEAN AIR ACT (CCAA) REQUIREMENTS
This Part contains additional provisions required underthe California Clean AirAct as amended.
5.1 Parallel Review and Stringency ofRequirements Each project subjectto New Source Review shall undergo areview under the federal requirements contained within all otherparts ofthis Rule, and aparallel review under the requirements ofthis Part. In cases where the requirements underthe federal Clean AirAct and the California Clean Air Act differ, the most stringent applicable provisions shall apply.
5.2 CCAA BestAvailable Control Technology (BACT) Requirements BACT shall be required for any new ormodified permit unit with apotential to emit 25 pounds per day ormore ofVOCs orNOx'



### ( 5.35.3.1

5.3.2

5.3.3
5.3.4

5.4 CCAA Offset Requirements Any new ormodified stationary source with apotential to emit 137 pounds perday ormore ofVOCs orNOx shall be required to provide offsets at the ratios specified in Section 4.3 herein. Offsets shall be actual, quarterly, enforceable emissions reductions from existing sources, sufficientto offset all anticipated quarterly emissions increases as calculated according to Subsections 5.3.3 and 5.3.4 ofthis Rule, associated with new or modified stationary sources, and which will result in a net air qualitybenefit. The amount ofoffsets obtained shall be at least equal to the potential to emit from the proposed new source. For any modified source, the amount ofoffsets obtained shall be at least equal to the differencebetweenthe emissions ofthe modified source, and the emissions ofthe existing source.
CCAA Stationary Source Calculations Forthe purposes ofdetermining offsetrequirements underthis Part, emissions profiles for new sources, existing sources ormodified sources shall be based on the potential to emit as described under Section 7.1 herein. Comparison ofnew, modified or existing
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sources shall be done in accordance with Sections 7.3 and 7.5 herein. Calculation of emission reductions shall be done in accordance with Section 7.6 herein.

PART 6 ADMINISTRATIVE REQUIREMENTS
The following administrative requirements shall apply to activities pursuant to this Rule, except for the review ofpowerplants over 50 megawatts. Powerplants over 50 megawatts shall be subject to the review requirements ofPart 8.
6.1 Alternative Siting Forthose sources for which an analysis ofalternative sites, sizes, and production processes is required under42 U.S.C. Section 7401 

### etseq., the District shall require the applicant to prepare an analysis functionally equivalent to the requirements ofDivision 13 ofthe Public Resources Code.
6.2 Complete Application The District shall determine whether the application is complete no later than 30 days afterreceipt ofthe application, or after such longertime as both the applicant and the District may agree is acceptable. 

### Ifthe District determines that the application is not complete, the applicant shall be notified in writing ofthe decision specifying the information required. Upon receipt of any resubmittal ofthe application, a new 30-day period to determine completeness shall begin. Completeness ofan application orresubmitted application shall be evaluated on the

. basis ofthe informationrequirements set forth in Districtregulations (adoptedpursuant

to Article 3, Sections 65940 through 65944 ofChapter4.5 ofDivision I ofTitle 7 ofthe Government Code) and application guidance as they exist on the date on which the application orresubmitted application was received. Upon determination that the application is complete, the District shall notify the applicant in writing. The District may, during the processing ofthe application, request an applicant to clarify, amplify, correct, orotherwise supplement the information submitted in the appli<;ation.
6.3 Proposed Sources in Federal Class I Areas



## f 6.3.1

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### 32 Permit Notice: The District shall provide notice within ten days ofdetermining that an application is complete which has been submitted for a proposed major stationary source ormajormodification ofan existing source, whose emissions would affect a federal Class I Area, to the Federal Land Manager and the federal official charged
Rule 207 (Review ofNew or Modified Sources)

## ( MONTEREY BAY UNIFIED AIR POLLUTION CONTROL DISTRICT REGULATION II PERMITS
with direct responsibility for management ofthe specified lands. The Federal Land Manager shall be provided a copy ofthe complete application and shall be notified of all subsequent actions relating to the consideration ofsuch permit. 6.3.2 Source Impacting Class I Areas: The District shall accept and consider comments offered within public commentperiod following the date ofpublicationby the Federal Land Manager ofany lands contained within a federal Class I Area impacted by a proposed major stationary source ormajormodification to an existing stationary source. Ifthe Federal Land Manager demonstrates that the emissions from a proposed major source ormajormodification would have an adverse impact on the air quality-related values (including visibility) ofany federal mandatory Class I Areas, and ifthe District concurs with such demonstration, then the District shall deny the Authority to Construct. 6.3.3 Federal Land ManagerAppeals: Ifthe District recommends apermit with which the Federal Land Manager orthe federal official charged with direct responsibility over the specified lands does not concur, the decision may be appealed to the Hearing Board.
6.4 Preliminary Decision Following acceptance ofan application as complete, the District shall perform the evaluations required to determine compliance with this Rule and make apreliminary written decision as to whether a permit to construct should be approved, conditionally approved, or disapproved.
6.5 Air Quality Increment Analysis The District shall evaluate the impact on the air quality increment ofthe emissions from the proposed source and any offsets obtained pursuant to Section 4.2 herein. Any emissions from secondary source growth associated with the source shall be included in the determination ofincrement consumption. The District shall not grant a permit to a source which is subject to Section 4.2 herein ifits emissions will exceed 50 percent of the remaining emissions increment.
6.6 Review ofAir Quality Increment Consumption The District shall assess the remaining airquality increment at least every five years, or every two years in areas where a source subject to Section4.2 herein has been sited since the last assessment ofthe respective air quality increment has occurred. The reassessment ofthe remaining airquality increment shall bebased on the changes in emissions including area sources and any changes in air quality background levels. The emissions from major stationary sources constructed since January 6, 1975 shall be included in the airquality increment consumption. Within 60 days ofa determination ofan increment violation the District will initiate action to mitigate the violation.

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### 33MONTEREY BAY UNIFIED AIR POLLUTION CONTROL DISTRICT REGULATION II PERMITS
6.7 Air Quality Models All air quality models used for the purposes ofthis Rule shall be consistent with the requirements provided in the most recent revision ofthe United States Environmental Protection Agency "Guidelines on Air Quality Models" unless the District finds that such a model is inappropriate for use. However, the District, on a case-by-case basis, may approve alternate models with the concurrence ofthe United States Environmental Protection Agency after allowing for apublic commentperiod. Credit shall notbe given for stacks higherthan that dictated by good engineering practice. All modeling costs associated with the siting ofa stationary source shall be borne by the applicant.
6.8 Publication and Public Comment Within ten calendar days following a preliminary decision pursuant to Section 1.3 or Part 4 orPart 5 ofthis Rule, where the emission levels are greaterthan or equal to those threshold limits listed for Sections 4.2 or 5.3; orwithin ten calendar days following a preliminary decision pursuant to Subsection 1.3.2.1; orwithin ten calendar days following apreliminary decision on a source's application for a modification pursuant to Section 2.32.5, the District shall publish in at least one newspaper ofgeneral circulation in the District a notice stating the preliminary decision ofthe District, noting how the pertinent information can be obtained, and inviting written public comment for a 30-day period following the date ofpublication.
6.9 Public Inspection The District shall make available for public inspection at the District's office the information submittedby the applicant and the District's analysis no laterthan the time the notice ofthe preliminary decision is published, pursuant to Section 6.8 herein. No laterthan the noticed date, all such information, including the proposed permit, shall be transmitted to the Air Resources Board, the United States Environmental Protection Agency, and any otherinterested public agency orparty requesting it.
6.10 Authority to Construct, Final Action Within 180 days after acceptance ofan application as complete, the District shall take final action on the application afterconsidering all written comments. The District shall provide written notice ofthe final action to the applicant, the United States Environmental Protection Agency, and the AirResources Board, and shall publish such notice in a newspaper ofgeneral circulation and shall make the notice and all supporting documents available for public inspection at the District's office. The District must provide a copy ofthe final permit to EPA.



### ( 6.11 Requirements, Permit to Operate As a condition for the issuance ofa Permit to Operate, the District shall require that the new source ormodification, and any sources which provide offsets, be operated in the
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### 34 Rule 207 (Review ofNew or Modified Sources)MONTEREY BAY UNIFIED AIR POLLUTION CONTROL DISTRICT REGULATION II PERMITS

manner assumed in making the analysis to determine compliance with this Rule, or as conditioned in the Authority to Construct. The Permit to Operate shall include specific emissions limitations which reflect BACT. 6.11.1

6.11.2 The operation ofany stationary source which provides offsets shall be subject to enforceable permit conditions, containing specific emissions limitations, to ensure that the emissions reductions will be provided in accordance with the provisions ofthis Rule and shall continue for the reasonable expected life ofthe proposed source. The emission reductions used for offsetpurposes must be certified, approved and registered by the District in the ERC Registry, unless the emission reductions are made at the same time as the permit application is made and on-site at the same stationary source. The emissionreductions must be surplus, quantifiable, real, permanent, and enforceable. Where the source ofoffsets is not subjectto aDistrictpermit, a Districtpermit with enforceable permit conditions, containing specific emission limitations, must be obtainedby the recipient ofsuch offsets. A written agreement shall be required between the applicant and the owner or operator ofsuch a source of offsets, which agreement, by its terms, shall be enforceable by the District as a thirdparty beneficiary. Any breach ofsuch an agreement shall be a violation of this Rule. The permit and agreement shall be submitted to the CaliforniaAir Resources Board to be forwarded to the United States Environmental Protection Agency as part ofthe State Implementation Plan.
6.12 Issuance, Permitto Operate The District shall issue a Permit to Operate to a stationary source subject to the requirements ofthis Rule ifit is determined that all offsets required as a condition ofan Authority to Construct or amendment to aPermit to Operate, will commence not later than the initial operation ofthe new ormodified source, and that the offsets shall be maintained throughout the operation ofthe new ormodified source which is the beneficiary ofthe offsets. Further, a Permitto Operate shall not be issued unless the source has complied with all conditions specified on the Authority to Construct, unless the District approves the incorporation ofthe unmet Authority to Construct conditions into the Permitto Operate. 6.12.1 Where a new ormodified stationary source is, in whole orinpart, areplacement for an existing stationary source on the sameproperty, the District may allow a maximum of90 days as a startup period for simultaneous operation ofthe existing stationary source and the new source orreplacement.
6.13 Regulations in Force will Govern The granting or denial ofan Authority to Construct shall be governed by the requirements ofthis Rule in force onthe date the application is deemed complete.

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## ( MONTEREY BAY UNIFIED AIR POLLUTION CONTROL DISTRICT REGULATION II PERMITS


### PART 7 CALCULATIONS
7.1 Detennination ofthe Potential to Emit The maximum design capacity ofanew stationary source ormodification shall be used to detennine the potential to emit from the new source ormodification. However, the applicant may agree to limitations on the operations on the new source ormodification. Ifthose limitations are included inboth Authorities to Construct and Pennits to Operate issued according to New Source Review, then those limitations shall be used to establish the potential to emit from the new source ormodification.
7.2 Historical Emissions from Existing Sources The emissions from an existing source shall be the historical emissions based on the actual operating conditions ofthe existing source averaged overthe three consecutive years immediatelypreceding the date ofapplication. 7.2.1 In cases where the existing source has notbeen in operation for three consecutive years orunder unusual circumstances, a shorterperiod orthree consecutive years within the five-yearperiod immediately preceding the date ofapplication thatbest represent the nonnal source operations may be applicable and approved by the District. 7.2.2 Ifviolations oflaws, rules, regulations, pennit conditions, or orders ofthe District, the CaliforniaAir Resources Board, State orthe United States Environmental Protection Agency occurred during the period used to detennine the operating conditions, then adjustments to the operating conditions shall be made to detennine the emissions the existing source would have caused without such violations.
7.3 General Stationary Source Calculations The increase in emissions from new stationary sources and modifications which are not seasonal sources shall be detennined using quarterly emissions profiles. 7.3.1 Quarterly emissions profiles for an existing orproposed stationary source or modification shall be constructedbyplotting the average daily emissions from such a source. 7.3.2 A separateprofile shall be constructed for eachpollutant. 7.3.3 The increase in emissions from amodification to an existing source shall be detenninedby comparing the quarterly emissions profiles for the existing source to the quarterly emissions profiles forthe proposed source aftermodification. An 

### increase in emissions exists whenever any part ofan emissions profile for amodified source exceeds the emissions profile for the existing source.

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### 7.3.4 The emissions from all marine vessels which load orunload at the stationary source shall be considered as emissions from the stationary source (as defined in Section 2.57 herein) while such vessels are operating in District waters and in California coastal waters adjacent to the District. 7.3.4.1 The emissions from marine vessels shall include volatile organic compounds that are displaced into the atmosphere; fugitive emissions; combustion emissions inDistrict waters; and emissions from loading and unloading of cargo. 7.3.5 The emissions from all trains dedicated to a specified stationary source, while operating in the airbasin, including directly emitted and fugitive emissions, shall be considered as emissions from the stationary source.
7.4 Increases in Emissions: Calculation Requirements for BACT and Offsets 7.4.1 Emissions profiles for new sources ormodified sources shall be based on the potential to emit as described under Section 7.1 herein. Emissions profiles for existing sources shall be based on the historical emissions as described under Section 7.2 herein. Comparison ofemissions profiles shall be done in accordance with the provisions ofSections 7.3 and 7.5 herein 7.4.2 The new emissions increase, as defined in Section 2.36 herein, occurring after August 19, 1983 for PM IO 

### or afterJuly 18, 1976 for any other affected pollutant, shall be used to determine BACT requirements for any new source or for any modifications to an existing source. 7.4.3 The net emissions increase, as defined in Section 2.35 herein, shall be used to determine offset requirements for any new source or for any modifications to an existing source. 7.4.3.1 When computing the net emissions increases for modifications, the District shall take into account the emissions increases and decreases, excluding any emissions reductions required to comply with federal, State, AirResources Board, orDistrict law, rules, regulations, agreements, or orders, and also excluding any reductions ofemissions which were originallypermitted under the provisions ofany exemption contained in Section 1.3. All emissions decreases used in computing the net emissions increase shall be incorporated into the Authority to Construct and Permitto Operate.
7.5 Increases in Emissions: Seasonal Source Calculations The increase in emissions from new stationary sources and modifications which are seasonal sources shall be determined using quarterly emissions profiles. 7.5.1 Quarterly emissions profiles shall be constructedbyplotting the average daily emissions from an existing orproposed seasonal source for the continuous 90-day



### 09/15/1999 Rule 207 (Review ofNew 

### orModified Sources) 

### 37

### ( MONTEREY BAY UNIFIED AIRPOLLUTION CONTROL DISTRICT REGULATION II PERMITS period during which the greatest emissions from the proposed new or modified source will occur. 7.5.2 A separate profile shall be constructed for each pollutant. 7.5.3 The increase in emissions from amodification to an existing seasonal source shall be detennined by comparing the quarterly emissions profiles for the existing source to the quarterly profiles for the proposed source aftermodification. An 

### increase in emissions exists whenever any part ofan emissions profile for the modified source exceeds the emissions profile for the existing source.
7.6 Calculation Requirements for Emissions Reductions 7.6.1 Emissions profiles for new sources ormodified sources shall be based on the potential to emit as described under Section 7.1 herein. Emissions profiles for existing sources shall bebased on the historical emissions as described under Section 7.2 herein. Comparison ofemissions profiles shall be done in accordance with the provisions ofSections 7.3 and 7.5 herein.

PART 8 POWER PLANTS
8.1 General Part 8 shall apply to all powerplants proposed to be constructed in the District and for which aNotice ofIntention (NOI) orApplication for Certification (APC) has been acceptedby the CaliforniaEnergy Commission. The Districtmay apply for reimbursement ofall costs incurred, including lost fees, in orderto comply with the provisions ofthis Part.
8.2 Intent to Participate and Preliminary Report Within 14 days ofreceipt ofan NOI, the District shall notify the AirResources Board and the CaliforniaEnergy Commission ofthe District's intentto participate inthe NOI proceeding. 

### Ifthe Districtchooses to participate in the NOI proceeding, the District shall prepare and submit areport to the Air

### Resources Board and the CaliforniaEnergy Commissionpriorto the conclusion ofthe nonadjudicatory hearing specified in Section 25509.5 ofthe Public Resources Code. Thatreport shall include, at aminimum: 8.2.1 apreliminary specific definition ofbest available control technology (BACT) for the proposed source; and, 8.2.2 apreliminary discussion ofwhetherthere is substantial likelihood that the requirements ofthis Rule and all otherDistrictregulations canbe satisfiedby the proposed source;
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8.2.3 apreliminary list ofconditions which the proposed source must meet in orderto comply with this Rule or any other applicable Districtregulation. Thepreliminary determination contained in the report shall be as specific as possible within the constraints ofthe information contained in the NOI.
8.3 Determination ofCompliance Review Upon receipt ofan AFC for apowerplant, the District shall conduct a determination of compliance review. This determination shall consist ofareview identical to that which would beperformed ifan application for an Authority to Construct had been received for the powerplant. Ifthe information contained in the AFC does not meet the requirements ofthis Rule, the District shall, within 20 calendar days ofreceipt ofthe AFC, so inform the CaliforniaEnergy Commission, and the AFC shall be considered incomplete and returned to the applicant for resubmittal.
8.4 Equivalency ofAFC for an Authority to Construct The District shall considerthe AFC to be equivalent to an application for an Authority to Construct during the determination ofcompliance review, and shall apply all provisions ofthis Rule which apply to applications for an Authority to Construct.
8.5 Need for Additional Information The Districtmay request from the applicant any information necessary for the completion ofthe determination ofcompliance review. Ifthe District is unable to obtain the information, the Districtmay petition the presiding Commissionerfor an order directing the applicant to supply such information.
8.6 Preliminary Determination Within 180 days ofaccepting an AFC as complete, the District shall make apreliminary decision on: 8.6.1 whetherthe proposedpowerplant meets the requirements ofthis Rule and all other applicable Districtregulations, and, 8.6.2 in the event ofcompliance, what permit conditions will be required including the specific BACT requirements and a description ofrequired mitigation measures. The preliminary written decision under Section 8.6 ofthis Rule shall be treated as a preliminary decision under Section 6.4 herein, and shall be finalized by the District only afterbeing subjectto the public notice and commentrequirements ofSections 6.3, 6.4, and 6.8 herein. The District shall not issue a determination ofcompliance unless all requirements ofthis Rule are met.

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8.7 Determination ofCompliance Within 240 days ofthe filing date, the District shall issue and submit to the California Energy Commission a determination ofcompliance or, ifsuch a determination cannot be issued, shall so inform the CaliforniaEnergy Commission. A determination of compliance shall confer the same rights and privileges as a Authority to Construct permit only when and ifthe California Energy Commission approves the AFC, and the CaliforniaEnergy Commission certificate includes all conditions ofthe determination ofcompliance.
8.8 Permit to Operate Any applicant receiving a certificate from the CaliforniaEnergy Commission pursuant to this Section and in compliance with all conditions ofthe certificate shall be issued a Permit to Operate by the District.

PART 9 SOURCE IMPACT ANALYSIS
9.1 Air Quality Impact Analysis The table in Section 9.4 herein is provided as a screening method to estimate the worst case air quality impact ofcarbon monoxide, particulate matter, oxides ofsulfur and oxides ofnitrogen ofa proposed point source without the use ofsophisticated modeling techniques. Modeling shall be used instead ofthe table ifin thejudgement ofthe District**~y** ofthe following apply: the pollutant is an oxidant; another source with unknown impact is being constructed in the affected area; the impact obtainedby using the table indicates concentrations will be nearthe national or state ambient air quality standards; the proposed source will be located in complex terrain; the source will have a volume flow rate less than 10 cubic meters per second; the stack exit gas temperature is less than 360oK; or, the physical size ofthe stackis greaterthan 100 meters. In such instances the models, databases, and otherrequirements specified in the most recent revision ofthe United States Environmental Protection Agency's "Guidelines on Air Quality Models" mustbe used.
9.2 Downwind Concentrations Using the airquality impact table in Section 9.4 herein, the estimated downwind concentrations are determinedby reading the value which corresponds to the actual stackheight and source strength ofthe proposed source. The table also provides the estimated distance from the source to the point ofmaximum ground level impact. Ifthe precise actual stackheight for the proposed source is not listed, interpolation can be used to determine the approximate downwind concentrations.

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### 40 Rule 207 (Review ofNew or Modified Sources)MONTEREY BAY UNIFIED AIR POLLUTION CONTROL DISTRICT REGULATION II PERMITS
9.3 Example Calculations To detennine the downwind concentrations attributable to aproposed source with an actual stackheight of45 meters and a source strength of 137 pounds perhour:
a. use 40 meter stackheight; b. considerthat the source strength lies between maximum one hour concentration values for 120 lb/hr = 1300 ug/m3 and 140 lb/hr = 120 lb/hr

### + 20 lb/hr = 1300 ug/m3 

### + 220 ug/m3 = 1520 ug/m3; and,
c. interpolate such that

x ug/m3 = (1520

- 1300) ( 140

- 120) x (137-120) 

### + 1300

= 1478 ug/m3 (this estimated maximum one-hour concentration for the proposed 137-lb/hr source is to be added to ambient concentration levels). Values for maximum concentrations for 3-hour, 8-hour, and 24-hourtime periods may be obtained by multiplying the I-hour concentrations by following factors: 3-hour = 0.9; 8-hour = 0.8; and, 24-hour = 0.4.

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### MONTEREY BAY UNIFIED AIR POLLUTION CONTROL DISTRICT REGULATION II PERMITS
9.4 Air Quality Impact Table The following table provides the worst case estimates ofpoint source air quality impacts: Estimated Maximum 1-hrConcentrations (ug/m3) S h for Listed Source trengtl s Stack Downwind 5lblhr 10 lblhr 20lblhr 40lblhr 80lblhr 120lblhr Height DistanceO (m) (m) 5 100 3150 6300 12800 25200 50400 75700 10 100 945 1890 3840 7560 15120 22700 15 150 380 760 1530 3020 6040 9080 20 200 220 440 900 1760 3530 5300 30 300 90 190 380 760 1510 2270 40 200 to 400 50 110 220 430 870 1300 50 250 to 450 40 70 150 290 580 880 70 350 20 40 80 170 330 500 100 450 10 20 40 90 190 290 

### NOTE: the wind speed was assumed to be 1 mls and the effective plume height was assumed equal to the physical stack height.

° 

### Downwind Distances to Maximum Estimated Concentrations (m).

PART 10 FEDERAL ENFORCEABILITY, SIP REVISIONS
This Part shall apply solely for the purposes offederal enforcement ofRule 207.
10.1 Increments for Carbon Monoxide, Nitrogen Dioxide, Hydrogen Sulfide, and Lead Increments for carbon monoxide, nitrogen dioxide, hydrogen sulfide and lead referenced in Subsection 2.5.2 herein are not submitted as a part ofthe SIP.
10.2 Subsection 2.5.2 ofthis Rule Forthe purposes ofthe submittal to the United States Environmental Protection Agency for inclusion in the SIP, the increments ofallowable air quality degradation, beyond existing air quality levels, shall be:

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### MONTEREY BAY UNIFIED AIR POLLUTION CONTROL DISTRICT REGULATION II PERMITS
10.2.1
10.2.2 for Area A, the increment specified for Class I Areas in 40 CFR Part 51.166 (Prevention ofSignificant Deterioration ofAir Quality), and, for Areas B, C, D, E, and F, and Area A Impact Zones, the increment specified for Class II Areas in 40 CFR Part 51.166.



### ( 10.3 Subsection 2.18.6 ofthis Rule is not submitted as a SIP revision.
lOA 

### Section 2.21 ofthis Rule is not submitted as a SIP revision. Forthe purposes ofthe SIP, emissions increment means air quality increment as defmed in Section 2.5 herein.
10.5 Part 5 ofthis Rule is not submitted as a SIP revision. 

## * * * * *

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### 43