SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

June 1, 1995 412-1

RULE 412 STATIONARY INTERNAL COMBUSTION ENGINES

LOCATED AT MAJOR STATIONARY SOURCES OF NOX

Adopted 06-01-95

INDEX

100 GENERAL

101 PURPOSE

102 APPLICABILITY

110 EXEMPTION, EMERGENCY STANDBY

111 EXEMPTION, AGRICULTURAL OPERATIONS

112 EXEMPTION, TEST STANDS

113 EXEMPTION, EMISSION CONTROL EVALUATION

114 EXEMPTION, NONROAD INTERNAL COMBUSTION ENGINE

115 EXEMPTION, MOTOR VEHICLE ENGINES

116 EXEMPTION, FLIGHT LINE INTERNAL COMBUSTION ENGINE

200 DEFINITIONS

201 ACTUAL INTERRUPTIONS OF POWER

202 ANNUAL HOURS OF OPERATION

203 BEST AVAILABLE RETROFIT CONTROL TECHNOLOGY (BARCT)

204 EMERGENCY STANDBY ENGINE

205 ENGINE RATING

206 INTERNAL COMBUSTION ENGINE

207 LEAN-BURN ENGINE

208 LOCATION

209 MAJOR STATIONARY SOURCE OF NITROGEN OXIDES

210 MOTOR VEHICLE ENGINE

211 MOTOR VEHICLE

212 NONROAD INTERNAL COMBUSTION ENGINE

213 POTENTIAL TO EMIT

214 REASONABLY AVAILABLE CONTROL TECHNOLOGY (RACT)

215 RETROFITTING

216 RICH-BURN ENGINE

217 STATIONARY INTERNAL COMBUSTION ENGINE

218 STATIONARY SOURCE

300 STANDARDS

301 RACT EMISSION LIMITS

302 BARCT EMISSION LIMITS

303 ALTERNATIVE CONTROL REQUIREMENT

304 EQUIPMENT REQUIREMENT - HOUR METER

400 ADMINISTRATIVE REQUIREMENTS

401 COMPLIANCE SCHEDULE

402 SOURCE TESTING FREQUENCY

500 MONITORING AND RECORDS

501 RECORDKEEPING REQUIREMENTS

502 TESTING PROCEDURES
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June 1, 1995 412-3

100 GENERAL

101 PURPOSE: To limit emissions of nitrogen oxides, carbon monoxide, and non-methane

hydrocarbons from the operation of stationary internal combustion engines located at a

major stationary source of nitrogen oxides.

102 APPLICABILITY: This rule applies to any stationary internal combustion engine in the

District rated at more than 50 brake horsepower located at a major stationary source of

nitrogen oxides.

110 EXEMPTION, EMERGENCY STANDBY: The provisions of Section 301, Section 302,

Section 303 and Section 400 shall not apply to the operation of stationary internal

combustion engines used for emergency standby.

111 EXEMPTION, AGRICULTURAL OPERATIONS: The provisions of this rule shall not

apply to the operation of stationary internal combustion engines used directly and

exclusively for agricultural operations necessary for the growing of crops or the raising of

fowl or animals.

112 EXEMPTION, TEST STANDS: The provisions of this rule shall not apply to the operation

of stationary internal combustion engines mounted on test stands used for evaluating

engine performance.

113 EXEMPTION, EMISSION CONTROL EVALUATION: The provisions of Section 301,

Section 302, Section 303, and Section 400 shall not apply to the operation of stationary

internal combustion engines used exclusively for research, design and evaluation of

emission control devices.

114 EXEMPTION, NONROAD INTERNAL COMBUSTION ENGINE: The provisions of this

rule shall not apply to nonroad internal combustion engines.

115 EXEMPTION, MOTOR VEHICLE ENGINES: The provisions of this rule shall not apply to

motor vehicle engines.

116 EXEMPTION, FLIGHT LINE INTERNAL COMBUSTION ENGINE: The provisions of this

rule shall not apply to internal combustion engines used as support for flight line

operations.

200 DEFINITIONS

201 ACTUAL INTERRUPTIONS OF POWER: When electrical service is interrupted by an

unforeseeable event.

202 ANNUAL HOURS OF OPERATION: The hours a stationary internal combustion engine

operates in a calendar year.

203 BEST AVAILABLE RETROFIT CONTROL TECHNOLOGY (BARCT): Best available

retrofit control technology as defined in Section 40406 of the California Health and Safety

Code is "an emission limitation that is based on the maximum degree of reduction

achievable, taking into account environmental, energy, and economic impacts by each

class or category of sources."

204 EMERGENCY STANDBY ENGINE: Any stationary internal combustion engine which

does not exceed one hundred (100) hours per year of operation for maintenance

purposes and operates under one or more of the following conditions:

204.1 The provision of emergency electrical power during actual interruptions of

electrical power, or;

204.2 The provision of emergency water pumping for flood control, or;

204.3 The provision of emergency water pumping for fire control, or;
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412-4 June 1, 1995

204.4 The provision of emergency electrical power for emergency incident response by

specially trained personnel in law enforcement, medicine or hazardous material

incident response.

205 ENGINE RATING: The output of a stationary internal combustion engine as determined

by the engine manufacturer and listed on the nameplate of the unit.

206 INTERNAL COMBUSTION ENGINE: A heat engine in which the combustion that

generates the heat takes place inside the engine proper instead of in a furnace.

207 LEAN-BURN ENGINE: Any internal combustion engine that is not a rich-burn engine.

208 LOCATION: Any single site at a building, structure, facility, or installation.

209 MAJOR STATIONARY SOURCE OF NITROGEN OXIDES: A stationary source whose

potential to emit exceeds 25 tons per year of nitrogen oxides.

210 MOTOR VEHICLE ENGINE: Any internal combustion engine used to propel a motor

vehicle.

211 MOTOR VEHICLE: Any device, self propelled by an internal combustion engine.

212 NONROAD INTERNAL COMBUSTION ENGINE: Any internal combustion engine that:

212.1 is not a motor vehicle engine; and

212.2 is not regulated by a federal New Source Performance Standard promulgated

under section 111 of the Federal Clean Air Act; and

212.3 by itself or in or on a piece of equipment, is portable or transportable, meaning

designed to be and capable of being carried or moved from one location to

another. Indicia of transportability include, but are not limited to, wheels, skids,

carrying handles, dolly, trailer, or platform; and

212.4 does not remain at a location for more than 12 consecutive months. Any engine,

such as a back-up or stand-by engine, that replaces an engine at a location and is

intended to perform the same function as the engine being replaced will be

included in calculating the consecutive time period. In that case, the cumulative

time of both engines, including the time between the removal of the original

engine and installation of the replacement engine, would be counted toward the

consecutive residence time period. In addition, an engine that is moved from its

location but does not need to be moved from its location to perform its function

shall be deemed to have remained at a single location. or

212.5 remains at a location less than 12 consecutive months where such a period

represents the full length of normal annual source operations, such as a seasonal

source.

213 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. Fugitive emissions associated with the emissions unit or stationary source shall

not be included in the potential to emit of the emissions unit or stationary source unless

the source belongs to one of the following categories of stationary sources:

213.1 Coal cleaning plants (with thermal dryers);

213.2 Kraft pulp mills;

213.3 Portland cement plants;

213.4 Primary zinc smelters;

213.5 Iron and steel mills;

213.6 Primary aluminum ore reduction plants;

213.7 Primary copper smelters;

213.8 Municipal incinerators capable of charging more than 250 tons of refuse per day
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

June 1, 1995 412-5

213.9 Hydrofluoric, sulfuric, or nitric acid plant;

213.10 Petroleum refineries;

213.11 Lime plants;

213.12 Phosphate rock processing plants;

213.13 Coke oven batteries;

213.14 Sulfur recovery plants;

213.15 Carbon black plants (furnace process);

213.16 Primary lead smelters;

213.17 Fuel conversion plants;

213.18 Sintering plants;

213.19 Secondary metal production plants;

213.20 Chemical process plants;

213.21 Fossil-fuel boilers (or combination thereof) totaling more than 250 million British

thermal units per hour heat input;

213.22 Petroleum storage and transfer units with a total storage capacity exceeding

300,000 barrels;

213.23 Taconite ore processing plants;

213.24 Glass fiber processing plants;

213.25 Charcoal production plants;

213.26 Fossil-fuel-fired steam electric plants of more than 250 million British thermal

units per hour heat input; or

213.27 All other stationary source categories regulated by a standard promulgated under

Section 111 or 112 (42 U.S.C. Section 7411 or 7412) of the Federal Clean Air

Act, but only with respect to those air pollutants that have been regulated for that

category.

214 REASONABLY AVAILABLE CONTROL TECHNOLOGY (RACT): The lowest emission

limitation that a particular unit is capable of meeting by using measures that are

reasonably available in terms of technological and economic feasibility.

215 RETROFITTING: Retrofitting is the addition of air pollution control equipment to the

exhaust stream or physical modification to the combustion system excluding adjustment of

an stationary internal combustion engine in order to meet the RACT standards contained in

Section 301. Changes in the method of operation shall not be considered as retrofit.

216 RICH-BURN ENGINE: A two or four stroke spark-ignited internal combustion engine

where the manufacturer's original recommended operating air/fuel ratio divided by the

stoichiometric air/fuel ratio is less than or equal to 1.1.

217 STATIONARY INTERNAL COMBUSTION ENGINE: Any internal combustion engine

that:

217.1 is not a motor vehicle engine; and

217.2 is not a nonroad engine.

218 STATIONARY SOURCE: Any building, structure, facility, or emissions unit which emits

or may emit any affected pollutant directly or as a fugitive emission.

218.1 Building, structure, facility, or emissions unit includes all pollutant emitting

activities which:

a. belong to the same industrial grouping, and

b. are located on one property or on two or more contiguous properties, and

c. are under the same or common ownership, operation, or control or which

are owned or operated by entities which are under common control.

218.2 Pollutant emitting activities shall be considered as part of the same industrial

grouping if:

a. they belong to the same two-digit standard industrial classification code,

or

b. they are part of a common production process. (Common production

process includes industrial processes, manufacturing processes and any

connected processes involving a common material.)
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

412-6 June 1, 1995

STANDARDS

301 RACT EMISSION LIMITS: After July 1, 1995, an owner or operator of any engine subject

to this rule shall not operate the engine unless the engine meets the following emission

limits. If retrofitting is required, the engine is exempt from the limits of this Section

provided the owner or operator complies with Sections 302 and 401.3

ENGINE OPERATING

CONDITIONS EMISSIONS LIMIT (ppmv @ 15% O2)

NOx CO NMHC

Spark Ignited Rich Burn 50 4000 250

Spark Ignited Lean Burn 125 4000 750

Compression Ignited 700 4000 750

302 BARCT EMISSION LIMITS:

302.1 Spark Ignited Rich Burn:

a. Except as provided in Table 2 of Section 302.1.b or Section 303 an

owner or operator of any spark-ignited rich burn stationary internal

combustion engine subject to Section 300 shall not operate the engine

unless the engine meets the emission limits in Table 1:

TABLE 1: SPARK IGNITED RICH BURN

EMISSION LIMITS EXPRESSED AS PPMV @ 15% O2

NOX CO NMHC

25 4,000 250

b. If a spark-ignited rich burn stationary internal combustion engine with an

engine rating less than or equal to 525 horsepower is operated less than

the hours listed in Table 2, the engine shall be exempt from the

requirements of Section 302.1.a. If the hours of operation exceed the

hours listed for any unit for any calendar year, then the unit must be

operated in compliance with the applicable emissions limits in Section

302.1.a.

TABLE 2: SPARK IGNITED RICH BURN

EXEMPTION FROM TABLE 1 EMISSION LIMITS

If engine rating is

greater than...

...but less than

or equal to..

and the actual annual hours of operation

are less than or equal to...

50 hp 75 hp 200 hours

75 hp 125 hp 120 hours

125 hp 155 hp 100 hours

155 hp 200 hp 80 hours

200 hp 300 hp 60 hours

300 hp 400 hp 45 hours

400 hp 525 hp 40 hours
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June 1, 1995 412-7

302.2 Spark Ignited Lean Burn: Except as provided in Section 303 an owner or operator

of any spark-ignited lean burn stationary internal combustion engine shall not

operate the engine unless the engine meets the emission limits in Table 3:

TABLE 3: SPARK IGNITED LEAN BURN

EMISSION LIMITS EXPRESSED AS PPMV @ 15% O2

NOX CO NMHC

65 4,000 750

302.3 Compression Ignited Engine:

a. Except as provided in Table 5 of Section 302.3.b or Section 303 an

owner or operator of any compression ignited stationary internal

combustion engine shall not operate the engine unless the engine meets

the emission limits in Table 4:

TABLE 4: COMPRESSION IGNITED

EMISSION LIMITS EXPRESSED AS PPMV @ 15% O2

NOX CO NMHC

80 4,000 750

b. If a compression ignited stationary internal combustion engine with an

engine rating less than or equal to 525 horsepower is operated less than

the hours listed in Table 5, the engine shall be exempt from the

requirements of Section 302.3.a. If the hours of operation exceed the

hours listed for any unit for any calendar year, then the unit must be

operated in compliance with the applicable emissions limits in Section

302.3.a.

TABLE 5: COMPRESSION IGNITED

EXEMPTION FROM TABLE 4 EMISSION LIMITS

If engine rating is

greater than...

...but less than

or equal to...

and the actual annual hours of

operation are less than or equal to...

50 hp 75 hp 1,435 hours

75 hp 125 hp 830 hours

125 hp 155 hp 565 hours

155 hp 200 hp 460 hours

200 hp 300 hp 365 hours

300 hp 400 hp 250 hours

400 hp 525 hp 200 hours
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412-8 June 1, 1995

303 ALTERNATIVE CONTROL REQUIREMENT: As an alternative to the NOX emission limit

specified in Section 302 a stationary internal combustion engine shall achieve and

maintain a percent NOX reduction by volume limit specified below as measured

concurrently across an emission control device. If internal modifications are made to an

engine the percent reduction shall be calculated from source test data before and after

internal modification.

303.1 Spark ignited rich burn 90 percent

303.2 Spark ignited lean burn 90 percent

303.3 Compression ignited 90 percent

304 EQUIPMENT REQUIREMENT: The owner or operator of any stationary internal

combustion engine, except for those engines being removed from service under Section

401.5, subject to any provision of this rule shall install one of the following:

304.1 HOUR METER: A non-resetting totalizing hour meter on each engine by (12

months after date of adoption).

304.2 COMPUTERIZED TRACKING: A computerized tracking system that maintains a

continuous daily record of hours of operation.

400 ADMINISTRATIVE REQUIREMENTS

401 COMPLIANCE SCHEDULE:

401.1 RACT EMISSION LIMITS: Any non-exempt stationary internal combustion engine

that is subject to the rule and has operated in the District prior to (date of

adoption) shall comply with the applicable limits by July 1, 1995 unless retrofitting

is required. If retrofitting is required the engine shall comply with Section 401.3

and either Section 401.4 or Section 401.5.

401.2 BARCT EMISSION LIMITS: Any non-exempt stationary internal combustion

engine that is subject to the emission limits of Section 302 shall comply with the

applicable limits by May 31, 1997 in accordance with Section 401.3 and either

Section 401.4 or Section 401.5

401.3 CURRENT EMISSION LEVEL: The owner or operator of any non-exempt

stationary internal combustion engine subject to Section 401.1 or Section 401.2

must comply with the following requirements by July 1, 1995:

a. Submit a current emission level for each engine to the Air Pollution

Control Officer.

b. A description of the method used to determine the current emission level.

401.4 INCREMENTS OF PROGRESS: The owner or operator of any stationary internal

combustion engine subject to Section 302 must comply with the following

requirements:

a. By July 1, 1995 submit a compliance plan to the Air Pollution Control

Officer for each unit which includes the following information:

1. The retrofitting required to meet the limits of Section 302 or

Section 303.

2. A schedule demonstrating compliance with the emission limits of

Section 302 or Section 303 and the remaining increments of this

Section

b. By January 31, 1996 submit a complete application for an Authority to

Construct for the modifications or equipment necessary to meet the

applicable emission limits contained in Section 302 or Section 303 to the

Air Pollution Control Officer.

c. By November 30, 1996 begin construction.

d. By March 31, 1997 complete construction.

e. By May 31, 1997 comply with the emission limits of Section 302 or

Section 303. This shall include the submittal of a complete source test

report indicating compliance.

401.5 REMOVAL FROM SERVICE: The owner or operator of any stationary internal

combustion engine operated in the District prior to (date of adoption) that is

expected to be removed from service by May 31, 1999 shall comply with the

following:
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

June 1, 1995 412-9

a. By July 1, 1995, submit to the Air Pollution Control Officer a petition (a

petition form can be obtained from the District) requesting an exemption

from the requirements of Section 301 through 303.

b. By January 31, 1996, submit to the Air Pollution Control Officer a

compliance plan containing the following information:

1. A complete application for an Authority to Construct for

modification of the Permit to Operate.

c. By May 31, 1999, discontinue operation of the stationary internal

combustion engine unit, disconnect fuel supply line(s), and notify the Air

Pollution Control Officer, in writing, of the removal from service.

402 SOURCE TESTING FREQUENCY: The owner or operator of any stationary internal

combustion engine subject to the requirements of Sections 301 through 303 shall conduct

source testing every eight thousand seven hundred sixty (8,760) hours of operation or five

(5) years which ever is the shorter time period.

500 MONITORING AND RECORDS

501 RECORDKEEPING REQUIREMENTS:

501.1 The owner or operator of any stationary internal combustion engine subject to any

provision of this rule shall maintain an operation record containing, at a minimum,

the following data:

a. Permit number of each stationary internal combustion engine.

b. Manufacturer, model number and rating in horsepower of each stationary

internal combustion engine.

c. Actual quarterly hours of operation of each stationary internal combustion

engine.

d. Maintain copies of most recent emission tests including date and results

reported as ppmv @ 15% O2 of NOX and pounds per unit time of NOX.

501.2 The owner or operator of any stationary internal combustion engine subject to any

provision of this rule shall maintain the operation record for a period of five (5)

years. The records shall be available for inspection by the Air Pollution Control

Officer upon request.

502 TESTING PROCEDURES: Demonstration of compliance with the emission limits

specified in Sections 301 through 303 shall be determined using the test methods

specified below averaged over three consecutive test runs.

502.1 OXIDES OF NITROGEN:

a. Emissions of oxides of nitrogen from spark ignited engines shall be

determined using ARB Test Method 100.

b. Emissions of oxides of nitrogen from compression ignited engines shall

be determined using EPA Test Method 7E.

502.2 CARBON MONOXIDE:

a. Emissions of carbon monoxide from spark ignited engines shall be

determined using ARB Test Method 100.

b. Emissions of carbon monoxide from compression ignited engines shall be

determined using EPA Test Method 10.

502.3 OXYGEN CONTENT:

a. Oxygen content of exhaust from spark ignited engines shall be

determined using ARB Test Method 100..

b. Oxygen content of exhaust from compression ignited engines shall be

determined using EPA Test Method 3A.

502.4 NONMETHANE HYDROCARBONS:

a. Nonmethane hydrocarbon emissions shall be determined using EPA Test

Method 25 or 25A. If EPA Test Method 25A is used, EPA Test Method

18 shall be used to determine methane content.
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412-10 June 1, 1995

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