RULE 511 POTENTIAL TO EMIT

Adopted 06-08-95

 CONTENTS

100 GENERAL

101 GENERAL APPLICABILITY 

102 EXEMPTION RECORDKEEPING AND REPORTING FOR A STATIONARY SOURCE 

WITH DE MINIMIS EMISSIONS 

103 PROVISION FOR AIR POLLUTION CONTROL EQUIPMENT 

104 EXEMPTION, STATIONARY SOURCE SUBJECT TO RULE 507, FEDERAL 

OPERATING PERMIT PROGRAM 

105 EXEMPTION, STATIONARY SOURCE WITH A LIMITATION ON POTENTIAL TO EMIT 

106 APPLICABLE PUBLIC INFORMATION REQUESTS 

107 PRE-CONSTRUCTION PERMIT APPLICABILITY 

200 DEFINITIONS

201 ACTUAL EMISSIONS 

202 ALTERNATIVE OPERATION LIMIT 

203 EMISSION UNIT 

204 FEDERAL CLEAN AIR ACT 

205 HAZARDOUS AIR POLLUTANT 

206 MAJOR SOURCE OF REGULATED AIR POLLUTANTS (EXCLUDING HAPS) 

207 MAJOR SOURCE OF HAZARDOUS AIR POLLUTANTS 

208 PART 70 PERMIT 

209 POTENTIAL TO EMIT 

210 PROCESS STATEMENT 

211 REGULATED AIR POLLUTANT 

212 TWELVE MONTH PERIOD 

300 STANDARDS

301 EMISSION LIMITATIONS 

302 EVALUATION OF COMPLIANCE 

303 PROCUREMENT OF NECESSARY PERMITS 

400 RECORDKEEPING REQUIREMENTS

401 APPLICABLE PROVISIONS 

402 PERMITTED EMISSION UNITS RECORDS 

500 REPORTING REQUIREMENTS

501 PROCESS STATEMENT 

502 EXEMPTION, REPORTING REQUIREMENTS 

503 PREVIOUSLY EXEMPTED STATIONARY SOURCES 

504 ADDITIONAL INFORMATION REQUESTED 

600 ALTERNATIVE OPERATION LIMIT AND REQUIREMENTS

601 COMPLIANCE WITH ALTERNATIVE OPERATIONAL LIMIT AND REQUIREMENTS 

602 PROCUREMENT OF NECESSARY PERMITS 

Placer County APCD 511 - 1 Rules and Regulations 
700 VIOLATIONS

701 FAILURE TO COMPLY 

702 SUBJECT TO APPLICABLE FEDERAL REQUIREMENTS 

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100 GENERAL

101 GENERAL APPLICABILITY:

This rule shall apply to any stationary source which would, if it did not comply with the 

limitations set forth in this rule, have the potential to emit air contaminants equal to or in 

excess of the threshold for a major source of regulated air pollutants or a major source of 

hazardous air pollutants (HAPs) and which meets one of the following conditions: 

101.1 In every 12-month period, the actual emissions of the stationary source are less 

than or equal to the emission limitations specified in Section 301 below; or 

101.2 In every 12-month period, at least 90 percent of the emissions from the stationary 

source are associated with an operation limited by any one of the alternative 

operational limits specified in Section 601 below. 

102 EXEMPTION RECORDKEEPING AND REPORTING FOR A STATIONARY SOURCE 

WITH DE MINIMIS EMISSIONS: The recordkeeping and reporting provisions in Sections 

400, 500 and 600 below shall not apply to a stationary source with de minimis emissions 

or operations as specified in either section 102.1 or 102.2 below: 

102.1 In every 12-month period, the stationary source emits less than or equal to the 

following quantities of emissions: 

a. 5 tons per year of a regulated air pollutant (excluding HAPs); 

b. 2 tons per year of a single HAP; 

c. 5 tons per year of any combination of HAPs; and 

d. 20 percent of any lesser threshold for a single HAP that the United 

States Environmental Protection Agency (U.S. EPA) may establish by 

rule. 

102.2 In every 12-month period, at least 90 percent of the stationary source's emissions 

are associated with an operation for which the throughput is less than or equal to 

one of the quantities specified in subsections (a) through (h) below: 

a. 1,400 gallons of any combination of solvent-containing materials but no 

more than 550 gallons of any one solvent-containing material, provided 

that the materials do not contain the following: methyl chloroform (1,1,1 

trichloroethane), methylene chloride (dichloromethane), 

tetrachloroethylene (perchloroethylene), or trichloroethylene; 

b. 750 gallons of any combination of solvent-containing materials where the 

materials contain the following: methyl chloroform (1,1,1-trichloroethane), 

methylene chloride (dichloromethane), tetrachloroethylene 

(perchloroethylene), or trichloroethylene, but not more than 300 gallons 

of any one solvent containing material; 

c. 4,400,000 gallons of gasoline dispensed from equipment with Phase I 

and II vapor recovery systems; 

d. 470,000 gallons of gasoline dispensed from equipment without Phase I 

and II vapor recovery systems; 

Placer County APCD 511 - 3 Rules and Regulations 
e. 1,400 gallons of gasoline combusted; 

f. 16,600 gallons of diesel fuel combusted; 

g. 500,000 gallons of distillate oil combusted; or 

h. 71,400,000 cubic feet of natural gas combusted. 

Within 30 days of a written request by the District or the U.S. EPA, the owner or operator 

of a stationary source not maintaining records pursuant to Sections 400 or 600 shall 

demonstrate that the stationary source's emissions or throughput are not in excess of the 

applicable quantities set forth in section 102.1 or 102.2 above. 

103 PROVISION FOR AIR POLLUTION CONTROL EQUIPMENT: The owner or operator of 

a stationary source may take into account the operation of air pollution control equipment 

on the capacity of the source to emit an air contaminant if the equipment is required by 

Federal, State, or District rules and regulations or permit terms and conditions. The 

owner or operator of the stationary source shall maintain and operate such air pollution 

control equipment in a manner consistent with good air pollution control practice for 

minimizing emissions. This provision shall not apply after January 1, 1999, unless such 

operational limitation is federally-enforceable or unless the District Board specifically 

extends this provision and it is submitted to the U.S. EPA. Such extension shall be valid 

unless, and until, the U.S. EPA disapproves the extension of this provision. 

104 EXEMPTION, STATIONARY SOURCE SUBJECT TO RULE 507, FEDERAL 

OPERATING PERMIT PROGRAM: This rule shall not apply to the following stationary 

sources: 

104.1 Any stationary source whose actual emissions, throughput, or operation, at any 

time after the effective date of this rule, is greater than the quantities specified in 

Sections 301 or 601 below and which meets both of the following conditions: 

a. The owner or operator has notified the District at least 30 days prior to 

any exceedance that s/he will submit an application for a Part 70 permit, 

or otherwise obtain federally-enforceable permit limits, and 

b. A complete Part 70 permit application is received by the District, or the 

permit action to otherwise obtain federally-enforceable limits is 

completed, within 12 months of the date of notification. 

However, the stationary source may be immediately subject to applicable federal 

requirements, including but not limited to, a maximum achievable control 

technology (MACT) standard. 

104.2 Any stationary source that has applied for a Part 70 permit in a timely manner 

and in conformance with Rule 507, FEDERAL OPERATING PERMIT 

PROGRAM, and is awaiting final action by the District and U.S. EPA. 

104.3 Any stationary source required to obtain an operating permit under Rule 507, 

FEDERAL OPERATING PERMIT PROGRAM for any reason other than being a 

major source. 

104.4 Any stationary source with a valid Part 70 permit. 

Notwithstanding sections 104.2 and 104.4, nothing in this section shall prevent 

any stationary source which has had a Part 70 permit from qualifying to comply 

with this rule in the future in lieu of maintaining an application for a Part 70 permit 

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or upon rescission of a Part 70 permit if the owner or operator demonstrates that 

the stationary source is in compliance with the emissions limitations in Section 

301 or an applicable alternative operational limit in Section 601. 

105 EXEMPTION, STATIONARY SOURCE WITH A LIMITATION ON POTENTIAL TO 

EMIT: This rule shall not apply to any stationary source which has a valid operating 

permit with federally-enforceable conditions or other federally-enforceable limits limiting 

its potential to emit to below the applicable threshold(s) for a major source as defined in 

sections 206 and 207. 

106 APPLICABLE PUBLIC INFORMATION REQUESTS: Within three years of the effective 

date of Rule 507, FEDERAL OPERATING PERMIT PROGRAM, the District shall 

maintain and make available to the public upon request, for each stationary source 

subject to this rule, information identifying the provisions of this rule applicable to the 

source. 

107 PRE-CONSTRUCTION PERMIT APPLICABILITY: This rule shall not relieve any 

stationary source from complying with requirements pertaining to any otherwise 

applicable preconstruction permit, or to replace a condition or term of any preconstruction 

permit, or any provision of a preconstruction permitting program.1 This does not preclude 

issuance of any preconstruction permit with conditions or terms necessary to ensure 

compliance with this rule. 

200 DEFINITIONS 

All terms shall retain the definitions provided under Rule 507, FEDERAL OPERATING PERMIT 

PROGRAM unless otherwise defined herein. 

201 ACTUAL EMISSIONS: The emissions of a regulated air pollutant from a stationary 

source for every 12-month period. Verifiable continuous emission monitoring data or 

source test data shall be preferentially used to determine actual emissions. In the 

absence of verifiable continuous emissions monitoring data or source test data, the basis 

for determining actual emissions shall be: throughputs of process materials; throughputs 

of materials stored; usage of materials; data provided in manufacturer's product 

specifications, material volatile organic compound (VOC) content reports or laboratory 

analyses; other information required by this rule and applicable District, State and 

Federal regulations; or information requested in writing by the District. All calculations of 

actual emissions shall use U.S. EPA, California Air Resources Board (CARB) or District 

approved methods, including emission factors and assumptions. 

202 ALTERNATIVE OPERATIONAL LIMIT: A limit on a measurable parameter, such as 

hours of operation, throughput of materials, use of materials, or quantity of product, as 

specified in Section 600, Alternative Operational Limit and Requirements. 

203 EMISSION UNIT: Any article, machine, equipment, operation, contrivance or related 

groupings of such that may produce and/or emit any regulated air pollutant or hazardous 

air pollutant. 

204 FEDERAL CLEAN AIR ACT: The federal Clean Air Act (CAA) as amended in 1990 (42 

U.S.C. section 7401 et seq.) and its implementing regulations. 

205 HAZARDOUS AIR POLLUTANT: Any air pollutant listed pursuant to section 112(b) of 

the federal Clean Air Act. 

 

1 For example, PSD, NSR, and ATC 

Placer County APCD 511 - 5 Rules and Regulations 
206 MAJOR SOURCE OF REGULATED AIR POLLUTANTS (EXCLUDING HAPS): A 

stationary source that emits or has the potential to emit a regulated air pollutant 

(excluding HAPs) in quantities equal to or exceeding the lesser of any of the following 

thresholds: 

206.1 100 tons per year (tpy) of any regulated air pollutant; 

206.2 50 tpy of volatile organic compounds or oxides of nitrogen for a federal ozone 

nonattainment area classified as serious, 25 tpy for an area classified as severe, 

or 10 tpy for an area classified as extreme; and 

206.3 70 tpy of PM10 for a federal PM10 nonattainment area classified as serious. 

Fugitive emissions of these pollutants shall be considered in calculating total emissions 

for stationary sources in accordance with 40 CFR Part 70.2 "Definitions-Major source(2)." 

207 MAJOR SOURCE OF HAZARDOUS AIR POLLUTANTS: A stationary source that emits 

or has the potential to emit 10 tons per year or more of a single HAP listed in section 

112(b) of the CAA, 25 tons per year or more of any combination of HAPs, or such lesser 

quantity as the U.S. EPA may establish by rule. Fugitive emissions of HAPs shall be 

considered in calculating emissions for all stationary sources. The definition of a major 

source of radionuclides shall be specified by rule by the U.S. EPA. 

208 PART 70 PERMIT: An operating permit issued to a stationary source pursuant to an 

interim, partial or final Title V program approved by the U.S. EPA. 

209 POTENTIAL TO EMIT: The maximum capacity of a stationary source to emit a regulated 

air pollutant based on its physical and operational design. Any physical or operational 

limitation on the capacity of the stationary source to emit a pollutant, including air 

pollution control equipment and restrictions on hours of operation or on the type or 

amount of material combusted, stored, or processed, shall be treated as part of its design 

only if the limitation is federally-enforceable. 

210 PROCESS STATEMENT: An annual report on permitted emission units from an owner 

or operator of a stationary source certifying under penalty of perjury the following: 

throughputs of process materials; throughputs of materials stored; usage of materials; 

fuel usage; any available continuous emissions monitoring data; hours of operation; and 

any other information required by this rule or requested in writing by the District. 

211 REGULATED AIR POLLUTANT: The following air pollutants are regulated: 

211.1 Oxides of nitrogen and volatile organic compounds; 

211.2 Any pollutant for which a national ambient air quality standard has been 

promulgated; 

211.3 Any Class I or Class II ozone depleting substance subject to a standard 

promulgated under Title VI of the federal Clean Air Act; 

211.4 Any pollutant that is subject to any standard promulgated under section 111 of 

the federal Clean Air Act; and 

211.5 Any pollutant subject to a standard or requirement promulgated pursuant to 

section 112 of the federal Clean Air Act, including: 

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a. Any pollutant listed pursuant to section 112(r) (Prevention of Accidental 

Releases) shall be considered a regulated air pollutant upon 

promulgation of the list. 

b. Any HAP subject to a standard or other requirement promulgated by the 

U.S. EPA pursuant to section 112(d) or adopted by the District pursuant 

to 112(g) and (j) shall be considered a regulated air pollutant for all 

sources or categories of sources: 1) upon promulgation of the standard 

or requirement, or 2) 18 months after the standard or requirement was 

scheduled to be promulgated pursuant to section 112(e)(3). 

c. Any HAP subject to a District case-by-case emissions limitation 

determination for a new or modified source, prior to the U.S. EPA 

promulgation or scheduled promulgation of an emissions limitation shall 

be considered a regulated air pollutant when the determination is made 

pursuant to section 112(g)(2). In case-by-case emissions limitation 

determinations, the HAP shall be considered a regulated air pollutant 

only for the individual source for which the emissions limitation 

determination was made. 

212 TWELVE MONTH PERIOD: A period of twelve consecutive months determined on a 

rolling basis with a new 12-month period beginning on the first day of each calendar 

month. 

300 STANDARDS

301 EMISSION LIMITATIONS: Unless the owner or operator has chosen to operate the 

stationary source under an alternative operational limit specified in section 601 below, no 

stationary source subject to this rule shall emit in every 12-month period more than the 

following quantities of emissions: 

301.1 50 percent of the major source thresholds for regulated air pollutants (excluding 

HAPs); 

301.2 5 tons per year of a single HAP; 

301.3 12.5 tons per year of any combination of HAPs; and 

301.4 50 percent of any lesser threshold for a single HAP as the U.S. EPA may 

establish by rule. 

302 EVALUATION OF COMPLIANCE: The APCO shall evaluate a stationary source's 

compliance with the emission limitations in section 301 above as part of the District's 

annual permit renewal process required by Health & Safety Code section 42301(e). In 

performing the evaluation, the APCO shall consider any annual process statement 

submitted pursuant to Section 500, Reporting Requirements. In the absence of valid 

continuous emission monitoring data or source test data, actual emissions shall be 

calculated using emissions factors approved by the U.S. EPA, CARB, or the APCO.

303 PROCUREMENT OF NECESSARY PERMITS: Unless the owner or operator has 

chosen to operate the stationary source under an alternative operational limit specified in 

Section 601 below, the owner or operator of a stationary source subject to this rule shall 

obtain any necessary permits prior to commencing any physical or operational change or 

activity which will result in actual emissions that exceed the limits specified in Section 301 

above. 

Placer County APCD 511 - 7 Rules and Regulations 
400 RECORDKEEPING REQUIREMENTS

Immediately after adoption of this rule, the owner or operator of a stationary source subject to this 

rule shall comply with any applicable recordkeeping requirements in this section. However, for a 

stationary source operating under an alternative operational limit, the owner or operator shall 

instead comply with the applicable recordkeeping and reporting requirements specified in Section 

600, Alternative Operational Limit and Requirements. The recordkeeping requirements of this rule 

shall not replace any recordkeeping requirement contained in an operating permit or in a District, 

State, or Federal rule or regulation. 

401 Applicable Provisions: A stationary source previously covered by the provisions in 

Section 102 above shall comply with the applicable provisions of Section 400 above and 

Sections 500 and 600 below if the stationary source exceeds the quantities specified in 

section 102.1 above. 

402 Permitted Emission Units Records: The owner or operator of a stationary source 

subject to this rule shall keep and maintain records for each permitted emission unit or 

groups of permitted emission units,2

 sufficient to determine actual emissions. Such 

information shall be summarized in a monthly log, maintained on site for five years, and 

be made available to District, CARB, or U.S. EPA staff upon request. 

402.1 Coating/Solvent Emission Unit: The owner or operator of a stationary source 

subject to this rule that contains a coating/solvent emission unit or uses a 

coating, solvent, ink or adhesive shall keep and maintain the following records: 

a. A current list of all coatings, solvents, inks and adhesives in use. This 

list shall include: information on the manufacturer, brand, product name 

or code, VOC content in grams per liter or pounds per gallon, HAPS 

content in grams per liter or pounds per gallon, or manufacturer's product 

specifications, material VOC content reports or laboratory analyses 

providing this information; 

b. A description of any equipment used during and after coating/solvent 

application, including type, make and model; maximum design process 

rate or throughput; control device(s) type and description (if any); and a 

description of the coating/solvent application/drying method(s) employed; 

c. A monthly log of the consumption of each solvent (including solvents 

used in clean-up and surface preparation), coating, ink and adhesive 

used; and 

d. All purchase orders, invoices, and other documents to support 

information in the monthly log. 

402.2 Organic Liquid Storage Unit: The owner or operator of a stationary source 

subject to this rule that contains a permitted organic liquid storage unit shall keep 

and maintain the following records: 

a. A monthly log identifying the liquid stored and monthly throughput; and 

 

2

 In some cases it may be appropriate to keep records on groups of emission units which are 

connected in series. Examples are internal combustion engines in the oil fields with a common fuel line, 

or a series of paint spray booths with a common feed. 

Rules and Regulations 511 - 8 Placer County APCD 
b. Information on the tank design and specifications including control 

equipment. 

402.3 Combustion Emission Unit: The owner or operator of a stationary source subject 

to this rule that contains a combustion emission unit shall keep and maintain the 

following records: 

a. Information on equipment type, make and model, maximum design 

process rate or maximum power input/output, minimum operating 

temperature (for thermal oxidizers) and capacity, control device(s) type 

and description (if any) and all source test information; and 

b. A monthly log of hours of operation, fuel type, fuel usage, fuel heating 

value (for non-fossil fuels; in terms of BTU/lb or BTU/gal), percent sulfur 

for fuel oil and coal, and percent nitrogen for coal. 

402.4 Emission Control Unit: The owner or operator of a stationary source subject to 

this rule that contains an emission control unit shall keep and maintain the 

following records: 

a. Information on equipment type and description, make and model, and 

emission units served by the control unit; 

b. Information on equipment design including where applicable: pollutant(s) 

controlled; control effectiveness; maximum design or rated capacity; inlet 

and outlet temperatures, and concentrations for each pollutant 

controlled; catalyst data (type, material, life, volume, space velocity, 

ammonia injection rate and temperature); baghouse data (design, 

cleaning method, fabric material, flow rate, air/cloth ratio); electrostatic 

precipitator data (number of fields, cleaning method, and power input); 

scrubber data (type, design, sorbent type, pressure drop); other design 

data as appropriate; all source test information; and 

c. A monthly log of hours of operation including notation of any control 

equipment breakdowns, upsets, repairs, maintenance and any other 

deviations from design parameters. 

402.5 General Emission Unit: The owner or operator of a stationary source subject to 

this rule that contains an emission unit not included in sections 402.1, 402.2 or 

402.3 above shall keep and maintain the following records: 

a. Information on the process and equipment including the following: 

equipment type, description, make and model; maximum design process 

rate or throughput; control device(s) type and description (if any); 

b. Any additional information requested in writing by the APCO; 

c. A monthly log of operating hours, each raw material used and its 

amount, each product produced and its production rate; and 

d. Purchase orders, invoices, and other documents to support information 

in the monthly log. 

Placer County APCD 511 - 9 Rules and Regulations 
500 REPORTING REQUIREMENTS

501 PROCESS STATEMENT RECORDS: At the time of annual renewal of a permit to 

operate under Rule 501, GENERAL PERMIT REQUIREMENTS, each owner or operator 

of a stationary source subject to this rule shall submit to the District a process statement. 

The statement shall be signed by the owner or operator and certify that the information 

provided is accurate and true. 

502 EXEMPTION, REPORTING REQUIREMENTS: For the purpose of determining 

compliance with this rule, this requirement shall not apply to stationary sources which 

emit in every 12-month period less than or equal to the following quantities: 

502.1 For any regulated air pollutant (excluding HAPs); 

a. 25 tons per year including a regulated air pollutant for which the District 

has a federal area designation of attainment, unclassified, transitional, or 

moderate nonattainment; 

b. 15 tons per year for a regulated air pollutant for which the District has a 

federal area designation of serious nonattainment; 

c. 6.25 tons per year for a regulated air pollutant for which the District has a 

federal area designation of severe nonattainment; 

502.2 2.5 tons per year of a single HAP; 

502.3 6.25 tons per year of any combination of HAPs; and 

502.4 25 percent of any lesser threshold for a single HAP as the U.S. EPA may 

establish by rule. 

503 PREVIOUSLY EXEMPTED STATIONARY SOURCES: A stationary source previously 

covered by provisions in Section 502 above shall comply with the provisions of Section 

501 above if the stationary source exceeds the quantities specified in Section 502. 

504 ADDITIONAL INFORMATION REQUESTED: Any additional information requested by 

the APCO under Section 501 above shall be submitted to the APCO within 30 days of the 

date of request. 

600 ALTERNATIVE OPERATIONAL LIMIT AND REQUIREMENTS

The owner or operator may operate the permitted emission units at a stationary source subject to 

this rule under any one alternative operational limit, provided that at least 90 percent of the 

stationary source's emissions in every 12-month period are associated with the operation(s) 

limited by the alternative operational limit. 

601 COMPLIANCE WITH ALTERNATIVE OPERATIONAL LIMIT AND REQUIREMENTS: 

Upon choosing to operate a stationary source subject to this rule under any one 

alternative operational limit, the owner or operator shall operate the stationary source in 

compliance with the alternative operational limit and comply with the specified 

recordkeeping and reporting requirements. 

601.1 The owner or operator shall report within 24 hours to the APCO any exceedance 

of the alternative operational limit. 

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601.2 The owner or operator shall maintain all purchase orders, invoices, and other 

documents to support information required to be maintained in a monthly log. 

Records required under this section shall be maintained on site for five years and 

be made available to District or U.S. EPA staff upon request. 

601.3 Gasoline Dispensing Facility Equipment with Phase I and II Vapor Recovery 

Systems: The owner or operator shall operate the gasoline dispensing equipment 

in compliance with the following requirements: 

a. No more than 7,000,000 gallons of gasoline shall be dispensed in every 

12-month period. 

b. A monthly log of gallons of gasoline dispensed in the preceding month 

with a monthly calculation of the total gallons dispensed in the previous 

12 months shall be kept on site. 

c. A copy of the monthly log shall be submitted to the APCO at the time of 

annual permit renewal. The owner or operator shall certify that the log is 

accurate and true. 

601.4 Degreasing or Solvent-Using Unit: The owner or operator shall operate the 

degreasing or solvent-using unit(s) in compliance with the following 

requirements: 

a. 1. If the solvents do not include methyl chloroform (1,1,1 

trichloroethane), methylene chloride (dichloromethane), 

tetrachloroethylene (perchloroethylene), or trichloroethylene, no 

more than 5,400 gallons of any combination of 

solvent-containing materials and no more than 2,200 gallons of 

any one solvent-containing material shall be used in every 

12-month period. 

2. If the solvents include methyl chloroform (1,1,1 trichloroethane), 

methylene chloride (dichloromethane), tetrachloroethylene 

(perchloroethylene), or trichloroethylene, no more than 2,900 

gallons of any combination of solvent-containing materials and 

no more than 1,200 gallons of any one solvent-containing 

material shall be used in every 12-month period. 

b. A monthly log of amount and type of solvent used in the preceding month 

with a monthly calculation of the total gallons used in the previous 12 

months shall be kept on site. 

c. A copy of the monthly log shall be submitted to the APCO at the time of 

annual permit renewal. The owner or operator shall certify that the log is 

accurate and true. 

601.5 Diesel-Fueled Emergency Standby Engine(s) with Output Less Than 1,000 Brake 

Horsepower: The owner or operator shall operate the emergency standby 

engine(s) in compliance with the following requirements: 

a. The emergency standby engine(s) shall not operate more than 1,300 

hours in 12-month period and shall not use more than 66,000 gallons of 

diesel fuel in every 12-month period. 

Placer County APCD 511 - 11 Rules and Regulations 
b. A monthly log of hours of operation, gallons of fuel used, and a monthly 

calculation of the total hours operated and gallons of fuel used in the 

previous 12 months shall be kept on site. 

c. A copy of the monthly log shall be submitted to the APCO at the time of 

annual permit renewal. The owner or operator shall certify that the log is 

accurate and true. 

602 PROCUREMENT OF NECESSARY PERMITS: The owner or operator of a stationary 

source subject to this rule shall obtain any necessary permits prior to commencing any 

physical or operational change or activity which will result in an exceedance of an 

applicable operational limit specified in Section 601 above. 

700 VIOLATIONS

701 FAILURE TO COMPLY: Failure to comply with any of the applicable provisions of this 

rule shall constitute a violation of this rule. Each day during which a violation of this rule 

occurs is a separate offense. 

702 SUBJECT TO APPLICABLE FEDERAL REQUIREMENTS: A stationary source subject 

to this rule shall be subject to applicable federal requirements for a major source, 

including Rule 507, FEDERAL OPERATING PERMIT PROGRAM when the conditions 

specified in either sections 702.1 or 702.2 below, occur: 

702.1 Commencing on the first day following every 12-month period in which the 

stationary source exceeds a limit specified in Section 301 above and any 

applicable alternative operational limit specified in Section 601, above, or 

702.2 Commencing on the first day following every 12-month period in which the owner 

or operator can not demonstrate that the stationary source is in compliance with 

the limits in Section 301 above or any applicable alternative operational limit 

specified in Section 601 above. 

Rules and Regulations 511 - 12 Placer County APCD