SACAQMD RULE 202 NEW SOURCE REVIEW
LAST REVISED 04/04/96

RULE 202 NEW SOURCE REVIEW

Adopted 9-20-76

(Amended 6-19-79, 7-26-79, 4-19-83, 11-20-84, 2-26-91, 4-4-96)

INDEX

100 - GENERAL

200 - DEFINITIONS

300 - STANDARDS



400 - ADMINISTRATIVE REQUIREMENTS



500 - MONITORING AND RECORDS (NOT APPLICABLE)


100 - GENERAL

101 - PURPOSE: The purpose of this rule is to provide for the review of new and modified stationary air pollution sources and to provide mechanisms, including emission offsets, by which authorities to construct such sources may be granted without interfering with the attainment or maintenance of ambient air quality standards.

A facility in possession of a valid Title V Operating Permit issued pursuant to Rule 207, TITLE V - FEDERAL OPERATING PERMIT PROGRAM, seeking a permit for a new emissions unit or a modified emissions unit which qualifies as a significant Title V modification, may choose to have their permit reviewed through an Enhanced New Source Review process, thereby meeting all the procedural requirements specified in Sections 401 through 408 of Rule 207, TITLE V - FEDERAL OPERATING PERMIT PROGRAM and the compliance requirements in Section 305 of Rule 207, TITLE V - FEDERAL OPERATING PERMIT PROGRAM. The Title V Operating Permit would then be amended administratively to reflect this permitting action.

102 - APPLICABILITY: This rule shall apply to all new stationary sources and emissions units and all modifications to existing stationary sources and emissions units which are subject to Rule 201, GENERAL PERMIT REQUIREMENTS and which, after construction or modification, emit or may emit any affected pollutants. This rule shall not apply to prescribed burning of forest, agriculture or range land, road construction or any other non-point source common to timber harvesting or agricultural practices. This Section 102 shall not be used to exempt any stationary source or modification, which would be subject to review under US Environmental Protection Agency regulations, from permit requirements.

The Enhanced New Source Review process applies only to facilities in possession of a valid Title V Operating Permit issued pursuant to Rule 207, TITLE V - FEDERAL OPERATING PERMIT PROGRAM, which are installing a new emissions unit or performing a significant Title V modification as defined in Section 233 of Rule 207, TITLE V - FEDERAL OPERATING PERMIT PROGRAM, and which have specifically requested in writing, in the permit application package, to have the application reviewed pursuant to the Enhanced New Source Review process.

103 - SEVERABILITY: If a court of competent jurisdiction issues an order that any provision of this rule is invalid, it is the intent of the Board of Directors of the District that other provisions of this rule remain in full force and affect, to the extent allowed by law.

110 - EXEMPTION - EMERGENCY EQUIPMENT: The Air Pollution Control Officer shall exempt an emissions unit from the requirements of Sections 302, and 303, if it would provide emergency electrical power, emergency water pumping for flood control or fire fighting provided the following requirements are met.

111 - EXEMPTION - TEMPORARY SOURCE: The Air Pollution Control Officer shall exempt an emissions unit from the requirements of Sections 302 and 303, if it is a temporary source and is not a major stationary source or major modification or is not located at a major stationary source.

112 - EXEMPTION - NOTIFICATION REQUIREMENTS: Except for applications reviewed under the Enhanced New Source Review process pursuant to Section 404, the requirements of Sections 405, 406, 407, and 408.2 relating to notification, publication, and public inspection of Preliminary Decisions; and notification, publication, and public inspection of Final Action shall not apply if the application is for a new or modified stationary source or emissions unit which has an increase in potential to emit, calculated pursuant to Sections 415, 416 or 417, as applicable, of less than:

POLLUTANT POUNDS PER QUARTER
Reactive organic compounds 7,500
Nitrogen Oxides 7,500
Sulfur Oxides 13,650
PM 10 7,500
Carbon monoxide 49,500




113 - EXEMPTION: REPLACEMENT EQUIPMENT: The requirements of Sections 302 and 303 shall not apply to replacement equipment.

114 - EXEMPTION: RULE COMPLIANCE: The requirements of Sections 302 and 303 shall not apply to modifications necessary to comply with standards contained in Regulation 4, PROHIBITIONS, or in the State Implementation Plan. Where more than one compliance option is allowed, then this exemption only applies to the emissions resulting from the least emissive option. The incremental emissions difference between the least emissive option and the selected option must comply with Sections 302 and 303. This exemption shall not apply to modifications in production rate, hours of operation, or other changes or additions to existing equipment not necessary for compliance with standards contained in District Regulation 4, PROHIBITIONS, or in the State Implementation Plan.


200 - DEFINITIONS

Unless otherwise defined below, the terms in this rule are defined in Rule 201, GENERAL PERMIT REQUIREMENTS, Rule 204, EMISSION REDUCTION CREDITS, and Rule 207, TITLE V - FEDERAL OPERATING PERMIT PROGRAM.

201 - ACTUAL EMISSIONS: Measured or estimated emissions which most accurately represent the emissions from an emissions unit.

202 - ACTUAL EMISSIONS REDUCTIONS: Reductions of historic actual emissions from an emissions unit selected for on-site or off-site emissions offsets. Historic actual emission reductions shall be calculated, adjusted and certified pursuant to Rule 204, EMISSION REDUCTION CREDITS.

203 - ACTUAL INTERRUPTIONS OF ELECTRICAL POWER: When electrical service is interrupted by an unforeseeable event.

204 - ACTUAL OPERATING DAYS: Any day of operation which results in the emission of an affected pollutant from the emissions unit.

205 - AFFECTED POLLUTANTS: Reactive organic compounds (ROC), nitrogen oxides (NOx), sulfur oxides (SOx), PM10, carbon monoxide (CO), lead, asbestos, beryllium, mercury, vinyl chloride, fluorides, sulfuric acid mist, hydrogen sulfide, total reduced sulfur, and reduced sulfur compounds, and municipal waste organics, municipal waste metals, and municipal waste acid gases, as defined in 40 CFR Part 60 Subpart Ea.

206 - AMBIENT AIR QUALITY STANDARDS: State and federal ambient air quality standards. For the purpose of submittal to the US Environmental Protection Agency for inclusion in the California State Implementation Plan all references in this rule to Ambient Air Quality Standards shall be interpreted as National Ambient Air Quality Standards.

207 - BEST AVAILABLE CONTROL TECHNOLOGY (BACT):

208 - CARGO CARRIERS: Cargo carriers are trains dedicated to a specific source.

209 - CEQA: The California Environmental Quality Act, Public Resources Code, Section 21000, et seq.

210 - CONTIGUOUS PROPERTY: Two or more parcels of land with a common boundary or separated solely by a public roadway or other public right-of-way.

211 - COST-EFFECTIVE: A cost per unit of emissions reduction which is lower than or equivalent to the maximum unit costs, for the affected pollutant or source category, of the same emission reduction through the use of Best Available Control Technology, calculated in current year dollars, in accordance with methodology and criteria specified in the BACT Cost-Effectiveness Guidelines developed by the District.

212 - EMISSION OFFSET: An emission reduction credit that compensates for an emission increase of an affected pollutant from a new or modified source subject to the requirements of Sections 302 and 303.

213 - EMISSIONS LIMITATION: One or more permit conditions specific to an emissions unit which restricts its maximum emissions, at or below the emissions associated with the maximum design capacity. An emissions limitation shall be:

214 - EMISSIONS UNIT: An identifiable operation or piece of process equipment such as an article, machine, or other contrivance which controls, emits, may emit, or results in the emissions of any affected pollutant or hazardous air pollutant (HAP), directly or as fugitive emissions. Emissions unit shall not include the open burning of agricultural biomass.

215 - FLUORIDES: Elemental fluorine and all fluoride compounds.

216 - FUGITIVE EMISSIONS: Those emissions which could not reasonably pass through a stack, chimney, vent or other functionally equivalent opening.

217 - HAZARDOUS AIR POLLUTANT (HAP): Any air pollutant listed pursuant to Section 112(b) (42 U.S.C Section 7412(b) of the Federal Clean Air Act).

218 - HISTORIC ACTUAL EMISSIONS: Actual emissions for the existing emissions unit averaged over the two year period immediately preceding the date of application for an Authority to Construct. If the last two years are unrepresentative of normal source operations as determined by the Air Pollution Control Officer, then any two consecutive years of the last five years that represent normal source operation may be used. If, at any time during the two year period, actual emissions exceeded allowed or permitted emission levels, then actual emissions shall be reduced to reflect emission levels that would have occurred if the unit were in compliance with all applicable limitations and rules. If less than one year has passed since the date of issuance of the Permit to Operate then the historic actual emissions shall be zero. If less than two years have passed since the date of issuance of the Permit to Operate then the historic actual emissions shall be the actual emissions over the one year period immediately preceding the date of application.

219 - HISTORIC POTENTIAL EMISSIONS: Emissions based on the potential to emit of the emissions unit prior to modification. In determining the historic potential to emit, emissions limitations shall be treated as part of an emissions unit's design only if the limitations are representative of normal operations or if emission offsets were provided from a previous permitting action. For the purposes of the above determination, "normal operations" is defined as the usual or typical operation of an emissions unit resulting in actual emissions which are at least 80% of the specific limits contained in the emission unit's Authority to Construct or Permit to Operate. If there are no enforceable limiting conditions, an emissions unit's potential to emit shall be the unit's historic actual emissions. For a new emissions unit, historic potential emissions are equal to zero. For BACT purposes, historic potential emissions are equal to the potential to emit without regards to the 80%.

220 - MAJOR STATIONARY SOURCE: A stationary source that emits or has the potential to emit an affected pollutant in quantities equal to or exceeding any of the following thresholds:

221 - MAJOR MODIFICATION: Modification to a major stationary source which results in an increase in the potential to emit equal to or exceeding any of the following thresholds when aggregated with all other creditable increases and decreases in emissions from the source over the period of five consecutive years before the application for modification, and including the calendar year of the most recent application:

222 - MODIFICATION: Any physical change, change in method of operation (including change in fuel characteristics), addition to, or any change in hours of operation, or change in production rate, which:

223 - NONATTAINMENT POLLUTANT: Any pollutant and any precursors of such pollutants which have been designated "nonattainment" for the District by the US Environmental Protection Agency in the Federal Register, or which have been designated nonattainment for the District by the California Air Resources Board pursuant to Section 39607 of the Health and Safety Code.

224 - PEAKING POWER PLANT: A fossil-fueled combustion turbine power generation unit with an annual capacity factor of 25% or less, which is used during peak electricity demand periods, and may operate for short periods, with frequent start-ups and shutdowns.

225 - PM10: Particulate matter with an aerodynamic diameter smaller than or equal to a nominal 10 microns as measured by an applicable reference test method or methods found in Article 2, Subchapter 6, Title 17, California Code of Regulations (commencing with Section 94100).

226 - PORTABLE EQUIPMENT: Equipment which is periodically relocated and is not operated more than a total of 180 days at any one stationary source in the District within a continuous 12 month period.

227 - POTENTIAL TO EMIT: The maximum physical and operational design capacity to emit a pollutant. Limitations on the physical or operational design capacity, including emissions control devices and limitations on hours of operation, may be considered only if such limitations are incorporated into the applicable Authority to Construct and Permit to Operate. The potential to emit shall include directly emitted fugitive emissions.

228 - PRECURSOR: A pollutant that, when emitted into the atmosphere, may undergo either a chemical or physical change which then produces another pollutant for which an ambient air quality standard has been adopted, or whose presence in the atmosphere will contribute to the violation of one or more ambient air quality standards. The following precursor-secondary air contaminant relationships shall be used for the purposes of this rule:


Precursor

Reactive Organic

Compound

Secondary Air Contaminant

a. Photochemical oxidants (Ozone)

b. Organic fraction of PM10

Nitrogen Oxides a. Nitrogen dioxide

b. Nitrate fraction of PM10

c. Photochemical oxidants (Ozone)

Sulfur Oxides a. Sulfur dioxide

b. Sulfates

c. The sulfate fraction of PM10


229 - PRIORITY RESERVE BANK: A depository for preserving emission reduction credits pursuant to Rule 205, PRIORITY RESERVE BANK for use as an emission offset in accordance with Sections 302, 303 and 415.

230 - PROPOSED EMISSIONS: Emissions based on the potential to emit for the new or modified emissions unit.

231 - QUARTER/QUARTERLY: Calendar quarters beginning January 1, April 1, July 1, and October 1.

232 - REACTIVE ORGANIC COMPOUND: Any compound containing at least one atom of carbon excluding the following:

233 - RECONSTRUCTED SOURCE: Any stationary source or emissions unit undergoing physical modification where the fixed capital cost of the new components exceeds 50 percent of the fixed capital cost of a comparable entirely new stationary source or emissions unit. Fixed capital cost means that capital needed to provide and install all the depreciable components: this includes the cost of parts and labor. A reconstructed source shall be treated as a new stationary source or emissions unit.

234 - REDUCED SULFUR COMPOUNDS: The sulfur compounds hydrogen sulfide, carbon disulfide and carbonyl sulfide.

235 - REPLACEMENT EQUIPMENT: The replacement or modification of emission unit(s) where the replacement unit(s) serves the identical function as the unit(s) being replaced, and the maximum rating and the potential to emit any pollutant will not be greater from the new or modified emissions unit(s) than the replaced unit(s).

236 - SACRAMENTO FEDERAL NON-ATTAINMENT AREA FOR OZONE: The area defined in 40 CFR Section 81.305 for the Sacramento Metropolitan area.

237 - SACRAMENTO URBANIZED FEDERAL NON-ATTAINMENT AREA FOR CARBON MONOXIDE: The Sacramento County portion of the Census Bureau Urbanized Area.

238 - STATIONARY SOURCE: Any building, structure, facility, or emissions unit which emits or may emit any affected pollutant directly or as a fugitive emission.

239 - TEMPORARY SOURCE: Emission sources such as pilot plants and portable facilities that will be terminated or located outside the district after less than a cumulative total of 90 days of operation in any continuous 12 months.

240 - TOTAL REDUCED SULFUR COMPOUNDS: The sulfur compounds hydrogen sulfide, methyl mercaptan, dimethyl sulfide and dimethyl disulfide.


300 - STANDARDS

301 - BEST AVAILABLE CONTROL TECHNOLOGY: An applicant shall apply Best Available Control Technology to a new emissions unit or modification of an existing emissions unit, except cargo carriers, for each emissions change of an affected pollutant, which would have an increase in emissions according to procedures specified in Section 412, and the potential to emit of the new or modified emissions unit exceeds the levels specified in Section 301.1.

301.1

POLLUTANT POUNDS PER DAY
Reactive organic compounds 10
Nitrogen oxides 10
Sulfur oxides 10
PM10 10
Carbon monoxide 550 550
Lead 3.3
Asbestos 0.04
Beryllium 0.0022
Mercury 0.55
Vinyl Chloride 5.5
Fluorides 16
Sulfuric acid mist 38
Hydrogen sulfide 55
Total Reduced sulfur Compounds 55
Reduced Sulfur Compounds 55

302 - EMISSION OFFSET REQUIREMENTS, GENERAL:

POLLUTANT POUNDS PER QUARTER
Reactive organic compounds 7,500
Sulfur oxides 13,650
PM10 7,500
Carbon monoxide 49,500
POLLUTANT POUNDS PER DAY
Reactive organic compounds 150
Nitrogen oxides 150
Sulfur oxides 150
PM10 80
Carbon monoxide 550

303 - LOCATION OF EMISSION OFFSETS AND EMISSION OFFSET RATIOS:



Emission Offset Ratio


Location of Emission Offset
Reactive organic compounds or Nitrogen oxides Sulfur oxides, PM10 or Carbon Monoxide
FOR USE BY MAJOR STATIONARY SOURCES OR MAJOR MODIFICATIONS
Same Source 1.3 to 1.0 1.0 to 1.0
Within 15-mile radius and within Sacramento Valley Air Basin 1.3 to 1.0 1.2 to 1.0
Greater than 15-mile but within 50-mile radius and within Sacramento Valley Air Basin 1.5 to 1.0 1.5 to 1.0
More than 50-mile radius and within Sacramento Valley Air Basin Greater than

1.5 to 1.0

Greater than

1.5 to 1.0

FOR USE BY NON-MAJOR STATIONARY SOURCES OR NON-MAJOR MODIFICATIONS
Same Source 1.0 to 1.0 1.0 to 1.0
Within 15-mile radius and within Sacramento Valley Air Basin 1.2 to 1.0 1.2 to 1.0
Greater than 15-mile but within 50-mile radius and within Sacramento Valley Air Basin 1.5 to 1.0 1.5 to 1.0
More than 50-mile radius and within Sacramento Valley Air Basin Greater than

1.5 to 1.0

Greater than

1.5 to 1.0

Emission offset ratio
For use by non-major stationary sources or non-major modifications 1.0 to 1.0
For use by major stationary sources or major modifications for reactive organic compounds or nitrogen oxides 1.3 to 1.0
For use by major stationary sources or major modifications for sulfur oxides, PM10 or carbon monoxide 1.2 to 1.0
Emission offset ratio
For use by non-major stationary sources or non-major modifications 1.0 to 1.0
For use by major stationary sources or major modifications for reactive organic compounds or nitrogen oxides 1.3 to 1.0
For use by major stationary sources or major modifications for sulfur oxides, PM10 or carbon monoxide 1.2 to 1.0

304 - INTERPOLLUTANT EMISSION OFFSETS: Interpollutant emission offsets are discouraged and may only be allowed between precursor contaminants. The Air Pollution Control Officer may approve interpollutant emission offsets for precursor pollutants on a case by case basis, provided that the applicant demonstrates through the use of an air quality model that the emission increases from the new or modified source will not cause or contribute to a violation of an ambient air quality standard. In such cases, the Air Pollution Control Officer shall impose, based on an air quality analysis, emission offset ratios in addition to the requirements of Section 303. Interpollutant emission offsets between PM10 and PM10 precursors may be allowed. PM10 emissions shall not be allowed to offset nitrogen oxides or reactive organic compound emissions in ozone nonattainment areas, nor be allowed to offset sulfur oxide emissions in sulfate nonattainment areas. In no case shall the compounds excluded from the definition of Reactive Organic Compounds be used as offsets for Reactive Organic Compounds. Interpollutant emission offsets used at a major stationary source must receive written approval by the US Environmental Protection Agency.

305 - AMBIENT AIR QUALITY STANDARDS: In no case shall emissions from a new or modified stationary source, prevent or interfere with the attainment or maintenance of any applicable ambient air quality standard. The Air Pollution Control Officer may require the use of an air quality model to estimate the effects of a new or modified stationary source. In making this determination the Air Pollution Control Officer shall take into account the mitigation of emissions through emission offsets obtained pursuant to this rule.

306 - DENIAL, FAILURE TO MEET STANDARDS: The Air Pollution Control Officer shall deny any Authority to Construct or Permit to Operate if the Air Pollution Control Officer finds that the subject of the application would not comply with the standards set forth in District, state, or federal rules, regulations or statutes.

307 - DENIAL, FAILURE TO MEET CEQA: The Air Pollution Control Officer shall deny an Authority to Construct or Permit to Operate if the Air Pollution Control Officer finds that the project which is the subject of the application would not comply with CEQA.


400 - ADMINISTRATIVE REQUIREMENTS

The following administrative requirements in Sections 401-417 shall apply to any activities regulated by this rule, except for the review of power plants over 50 megawatts. Power plants over 50 megawatts shall be subject to the review requirements of Section 418.

401 - ALTERNATIVE SITING: For those sources for which an analysis of alternative sites, sizes, and production processes is required under Section 1723 of the Clean Air Act, the Air Pollution Control Officer shall require the applicant to prepare an analysis functionally equivalent to the requirements of Division 13 of the Public Resources Code (California Environmental Quality Act-CEQA).

402 - COMPLETE APPLICATION: The Air Pollution Control Officer shall determine whether the application is complete not later than 30 days after receipt of the application, or after such longer time as both the applicant and the Air Pollution Control Officer have agreed in writing. If the Air Pollution Control Officer determines that the application is not complete, the applicant shall be notified in writing of the decision specifying the information required. Upon receipt of any re-submittal of the application, a new 30-day period to determine completeness shall begin. Completeness of an application or re-submitted application shall be evaluated on the basis of the information requirements set forth in the District's List and Criteria (adopted pursuant to Article 3, 65940 through 65944 of Chapter 4.5 of Division l of Title 7 of the California Government Code) as it exists on the date on which the application or re-submitted application was received, and on payment of the appropriate fee pursuant to Rule 301 - PERMIT FEES, STATIONARY SOURCES. The Air Pollution Control Officer may, during the processing of the application, request an applicant to clarify, amplify, correct, or otherwise supplement the information submitted in the application.

403 - AIR QUALITY MODELS: All air quality models used for the purposes of this rule shall be consistent with the requirements provided in the most recent edition of US Environmental Protection Agency "Guidelines on Air Quality Models, OAQPS 1.2-080" unless the Air Pollution Control Officer finds that such model is inappropriate for use. After making such finding the Air Pollution Control Officer may designate an alternate model only after allowing for public comment, and only with concurrence of the US Environmental Protection Agency. Credit shall not be given for stacks higher than that dictated by good engineering practice. All modeling costs associated with the siting of a stationary source shall be borne by the applicant.

404 - ENHANCED NEW SOURCE REVIEW: Applications for which the applicant has requested review pursuant to this Section and Section 101 shall be reviewed in accordance with the procedural requirements specified in Sections 401 through 408 of District Rule 207, TITLE V FEDERAL OPERATING PERMIT PROGRAM, and Sections 70.6(a) through 70.6(g), 70.7(a), and 70.7(b), Part 70, Title 40, Code of Federal Regulations (40 CFR).

405 - PRELIMINARY DECISION: Except as provided in Section 112, following acceptance of an application as complete, the Air Pollution Control Officer shall perform the evaluations required to determine compliance with all applicable district, state and federal rules, regulations, or statutes and shall make a preliminary written decision as to whether an Authority to Construct should be approved, conditionally approved, or denied. The decision shall be supported by a succinct written analysis.

406 - PUBLICATION AND PUBLIC COMMENT: Except as provided in Section 112, within ten calendar days following a preliminary decision pursuant to Section 300, Standards, of this rule, the Air Pollution Control Officer shall publish in at least one newspaper of general circulation in the District a notice stating the preliminary decision of the Air Pollution Control Officer, noting how pertinent information can be obtained, and inviting written public comment for a 30-day period following the date of publication. The notice shall include the time and place of any hearing that may be held, including a statement of procedure to request a hearing (unless a hearing has already been scheduled). The Air Pollution Control Officer shall give notice of any public hearing at least 30 days in advance of the hearing.

407 - PUBLIC INSPECTION: Except as provided in Section 112, the Air Pollution Control Officer shall make available for public inspection at the District's office the information submitted by the applicant and the Air Pollution Control Officer's analysis no later than the date the notice of the preliminary decision is published, pursuant to Section 406. All such information shall be transmitted no later than the date of publication to the California Air Resources Board and the US Environmental Protection Agency regional office, and to any party which requests such information. Information submitted which contains trade secrets shall be handled in accordance with Section 6254.7 of the California Government Code and relevant sections of the California Administrative Code.

408 - AUTHORITY TO CONSTRUCT, FINAL ACTION:

409 - REQUIREMENTS, AUTHORITY TO CONSTRUCT AND PERMIT TO OPERATE:

410 - ISSUANCE, PERMIT TO OPERATE: In addition to the requirements of Rule 207, TITLE V FEDERAL OPERATING PERMIT PROGRAM, if applicable the Air Pollution Control Officer shall issue a Permit to Operate an emissions unit, pursuant to Rule 201, GENERAL PERMIT REQUIREMENTS, subject to the requirements of this rule if it is determined that any offsets required as a condition of an Authority to Construct or amendment to a Permit to Operate will commence not later than the initial operation of the new or modified source, and that the emission offsets shall be maintained throughout the operation of the new or modified source which is the beneficiary of the emission offsets. Further, the Air Pollution Control Officer shall determine that all conditions specified in the Authority to Construct have been complied with or will be complied with by the dates specified on the Authority to Construct. Such applicable conditions shall be contained in the Permit to Operate. Where a new or modified stationary source is, in whole or in part, a replacement for an existing stationary source on the same property, the Air Pollution Control Officer may allow a maximum of 90 days as a startup period for simultaneous operation of the existing stationary source and the new source or replacement.

411 - REGULATIONS IN FORCE GOVERN: An Authority to Construct shall be granted or denied based on Best Available Control Technology and emission offset requirements of Sections 301 and 302 in force on the date the application is deemed complete as defined in Section 402. In addition, the Air Pollution Control Officer shall deny an Authority to Construct for any new stationary source or modification, or any portion thereof, unless:

412 - CALCULATION OF EMISSIONS FOR BACT: The emissions change for a new or modified emissions unit shall be calculated by subtracting historic potential emissions from proposed emissions. Calculations shall be performed separately for each emissions unit for each calendar quarter and divided by the number of days in each calendar quarter.

413 - CALCULATION OF EMISSION OFFSET TRIGGERS FOR ROC AND NOX:Except as provided in Sections 413.1, the cumulative emission increase for each calendar quarter for a stationary source shall be the sum of emissions from Sections 413.2 and 413.3 for each calendar quarter, expressed in terms of pounds per quarter. For Peaking Power Plants and for electrical generating equipment used in an auxiliary power program, the emissions for each calendar quarter shall be divided by the number of operating days in each calendar quarter.

414 - CALCULATION OF EMISSION OFFSET TRIGGERS FOR SOX, PM10 AND CO: Except as provided in Sections 414.1, the cumulative emission increase for each calendar quarter for a stationary source shall be the sum of emissions from Sections 414.2, 414.3, and 414.4 for each calendar quarter, expressed in terms of pounds per quarter. For Peaking Power Plants and for electrical generating equipment used in an auxiliary power program, the emissions for each calendar quarter shall be divided by the number of operating days in each calendar quarter.

415 - CALCULATION OF EMISSION OFFSETS - GENERAL: The emissions change for a new or modified emissions unit shall be calculated by subtracting historic potential emissions from proposed emissions. Calculations shall be performed separately for each pollutant and each emissions unit for each calendar quarter. Negative emissions changes shall be processed under the procedures specified in Rule 204, EMISSION REDUCTION CREDITS.

416 - CALCULATION OF EMISSION OFFSETS REQUIRED FOR ROC AND NOX: The net emissions increase pursuant to Section 415 for a stationary source shall be the sum of emissions from each of the following for each calendar quarter expressed in terms of pounds per quarter.

(416.3) If the stationary source was in operation prior to (date of adoption) then subtract the levels in Section 302.1.

Any emissions increase represented by an Authority to Construct or Permit to Operate which has been cancelled or has expired shall not be included in the net emissions increase calculation.

417 - CALCULATION OF EMISSION OFFSETS REQUIRED FOR SOX, PM10 AND CO: The potential to emit of the current application expressed in terms of pounds per quarter.

418 - POWER PLANTS: This section shall apply to all power plants proposed to be constructed in the District and for which a Notice of Intention (NOI) or Application for Certification (AFC) has been accepted by the California Energy Commission.