40 CFR Part 91, Subpart D, Appendix A to Subpart D of Part 91 - Tables

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View PDF at GPO Pt. 91, Subpt. D, App. A
Appendix A to Subpart D of Part 91—Tables
Table 1—Symbols Used in Subparts D and E
Symbol Term Unit
AYM Final weighted emission test results g/kW-hr
C3 H8 Propane
CB Concentration of emission in background sample ppm
CD Concentration of emission in dilute sample ppm
CO Carbon monoxide
CO2 Carbon dioxide
conc Concentration (ppm by volume) ppm
DX. Density of a specific emission (XX) g/m3
DXX Volume concentration of a specific emission (XX) on a dry basis percent
DF Dilution factor of dilute exhaust
D1 Water vapor mixture concentration percent
f Engine specific parameter considering atmospheric conditions
GAIRD Intake air mass flow rate on dry basis kg/h
GFuel Fuel mass flow rate kg/h
GP Analyzer standard operating pressure Pa
Gs Mass of carbon measured during a sampling period g
H Absolute humidity (water content related to dry air) gr/kg
H2 Hydrogen
i Subscript denoting an individual mode
IT Indicated torque N-m
K Wet to dry conversion factor
KH Humidity correction factor
KV Calibration coefficient for critical flow venturi
MX. Molecular weight of a specific molecule(XX) g/mole
mass Pollutant mass flow g/h
MFUEL Mass of fuel consumed during a sampling period g
N Pump revolutions during test period revs
N2 Nitrogen
NO Nitric oxide
NO2 Nitrogen dioxide
NOX Oxides of nitrogen
O2 Oxygen
O2 I Oxygen concentration of the burner air percent
P Absolute pressure kPa
PAUX Declared total power absorbed by auxiliaries fitted for the test kW
PB Total barometric pressure (average of the pre-test and post-test values) kPa
Pdew Test ambient saturation vapor pressure at the dew point kPa
Pe Absolute pump outlet pressure kPa
PED Pressure drop between the inlet and throat of metering venturi kPa
Pi Pi=PM, i PAUX,i
PM Maximum power measured at the test speed under test conditions kW
PP Absolute pump inlet pressure kPa
PPI Inlet pressure depression of venturi or pump kPa
PPO Pressure head at CVS pump outlet kPa
Ps Dry atmospheric pressure kPa
PV Absolute venturi inlet pressure kPa
Pwb Saturated vapor pressure Pa
QC Volumetric flow rate of dilute exhaust through CVS at STP m3/hr
QS Gas flow rate m3/min
RSTP Ideal gas constant at STP m3/mole
R2 Fuel carbon weight fraction g/g
STP Standard temperature and pressure
t Elapsed time for test period sec.
T Absolute temperature at air inlet °C
Ta Ambient temperature °C
TEI Air temperature in to metering venturi or flowmeter °C
TK Absolute temperature K
TP Absolute pump inlet temperature °C
TPI Air temperature at CVS pump inlet °C
TPO Air temperature at CVS pump outlet °C
TV Absolute venturi inlet temperature °C
VO Pump flow m3/rev
W Average mass flow of emissions g/hr
WX. Mass rate of specific emission (XX) g/hr
WXX Volume concentration in exhaust of specific emission (XX) on wet basis ppm, ppmC, %
WF Weighing factor
Z1 Water concentration percent
α Fuel specific factor representing the hydrogen to carbon ratio
Table 2—Measurement Accuracy Calibration Frequency
No. Item Permissible deviation from reading 1 Calibration frequency
non-idle idle
1 All accuracy requirements pertain to the final recorded value which is inclusive of the data acquisition system.
2 If reading is under 100 ppm then the accuracy shall be ±2 ppm.
1 Engine speed ±2% ±2% Monthly.
2 Torque ±5% Monthly.
3 Fuel consumption ±1% ±5% Monthly.
4 Air consumption ±2% ±5% As required.
5 Coolant temperature ±2 °C Same As required.
6 Lubricant temperature ±2 °C Same As required.
7 Exhaust back pressure ±5% Same As required.
8 Inlet depression ±5% Same As required.
9 Exhaust gas temperature ±15 °C Same As required.
10 Air inlet temperature (combustion air) ±2 °C Same As required.
11 Atmospheric pressure ±0.5% Same As required.
12 Humidity (combustion air) (relative) ±3.0% Same As required.
13 Fuel temperature ±2 °C Same As required.
14 Temperature with regard to dilution system ±2 °C Same As required.
15 Dilution air humidity ±3% absolute Same As required.
16 HC analyzer ±2% 2 Same Monthly.
17 CO analyzer ±2% 2 Same Monthly.
18 NOX analyzer ±2% 2 Same Monthly.
19 NOX converter check 90% Same Monthly.
20 CO2 analyzer ±2% 2 Same Monthly.
Table 3—Test Fuel Specifications
Item Property Tolerance Procedure (ASTM) 1
1 All ASTM Procedures in this table have been incorporated by reference. See § 91.6.
Sulfur, ppm max 1000 D 2622
Benzene, max. percent 1.5 D 3606
RVP, psi 8.6 ±0.6 D 323
Octane, R M/2 89.9 ±3.1 D 2699D 2700
IBP, °C 32.8 ±11.0 D 86
10% point, °C 53.3 ±5.5 D 86
50% point, °C 101.7 ±8.3 D 86
90% point, °C 160.0 ±11.1 D 86
End Point, max. °C 212.8 D 86
Phosphorus, g/l, max 0.02 D 3231
Lead, g/l, max 0.02
Manganese, g/l, max 0.004
Aromatics, max. percent 35 D 1319
Olefins, max. percent 10 D 1319
Saturates, percent remain D 1319

Title 40 published on 2013-07-01

no entries appear in the Federal Register after this date.

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.


United States Code
U.S. Code: Title 42 - THE PUBLIC HEALTH AND WELFARE

§ 7401 - Congressional findings and declaration of purpose

§ 7402 - Cooperative activities

§ 7403 - Research, investigation, training, and other activities

§ 7404 - Research relating to fuels and vehicles

§ 7405 - Grants for support of air pollution planning and control programs

§ 7406 - Interstate air quality agencies; program cost limitations

§ 7407 - Air quality control regions

§ 7408 - Air quality criteria and control techniques

§ 7409 - National primary and secondary ambient air quality standards

§ 7410 - State implementation plans for national primary and secondary ambient air quality standards

§ 7411 - Standards of performance for new stationary sources

§ 7412 - Hazardous air pollutants

§ 7413 - Federal enforcement

§ 7414 - Recordkeeping, inspections, monitoring, and entry

§ 7415 - International air pollution

§ 7416 - Retention of State authority

§ 7417 - Advisory committees

§ 7418 - Control of pollution from Federal facilities

§ 7419 - Primary nonferrous smelter orders

§ 7420 - Noncompliance penalty

§ 7421 - Consultation

§ 7422 - Listing of certain unregulated pollutants

§ 7423 - Stack heights

§ 7424 - Assurance of adequacy of State plans

§ 7425 - Measures to prevent economic disruption or unemployment

§ 7426 - Interstate pollution abatement

§ 7427 - Public notification

§ 7428 - State boards

§ 7429 - Solid waste combustion

§ 7430 - Emission factors

§ 7431 - Land use authority

§ 7450 to 7459 - Repealed.

§ 7470 - Congressional declaration of purpose

§ 7471 - Plan requirements

§ 7472 - Initial classifications

§ 7473 - Increments and ceilings

§ 7474 - Area redesignation

§ 7475 - Preconstruction requirements

§ 7476 - Other pollutants

§ 7477 - Enforcement

§ 7478 - Period before plan approval

§ 7479 - Definitions

§ 7491 - Visibility protection for Federal class I areas

§ 7492 - Visibility

§ 7501 - Definitions

§ 7502 - Nonattainment plan provisions in general

§ 7503 - Permit requirements

§ 7504 - Planning procedures

§ 7505 - Environmental Protection Agency grants

§ 7505a - Maintenance plans

§ 7506 - Limitations on certain Federal assistance

§ 7506a - Interstate transport commissions

§ 7507 - New motor vehicle emission standards in nonattainment areas

§ 7508 - Guidance documents

§ 7509 - Sanctions and consequences of failure to attain

§ 7509a - International border areas

§ 7511 - Classifications and attainment dates

§ 7511a - Plan submissions and requirements

§ 7511b - Federal ozone measures

§ 7511c - Control of interstate ozone air pollution

§ 7511d - Enforcement for Severe and Extreme ozone nonattainment areas for failure to attain

§ 7511e - Transitional areas

§ 7511f - NO

§ 7512 - Classification and attainment dates

§ 7512a - Plan submissions and requirements

§ 7513 - Classifications and attainment dates

§ 7513a - Plan provisions and schedules for plan submissions

§ 7513b - Issuance of RACM and BACM guidance

§ 7514 - Plan submission deadlines

§ 7514a - Attainment dates

§ 7515 - General savings clause

§ 7521 - Emission standards for new motor vehicles or new motor vehicle engines

§ 7522 - Prohibited acts

§ 7523 - Actions to restrain violations

§ 7524 - Civil penalties

§ 7525 - Motor vehicle and motor vehicle engine compliance testing and certification

§ 7541 - Compliance by vehicles and engines in actual use

§ 7542 - Information collection

§ 7543 - State standards

§ 7544 - State grants

§ 7545 - Regulation of fuels

§ 7546 - Renewable fuel

§ 7547 - Nonroad engines and vehicles

§ 7548 - Study of particulate emissions from motor vehicles

§ 7549 - High altitude performance adjustments

§ 7550 - Definitions

§ 7551 - Omitted

§ 7552 - Motor vehicle compliance program fees

§ 7553 - Prohibition on production of engines requiring leaded gasoline

§ 7554 - Urban bus standards

§ 7571 - Establishment of standards

§ 7572 - Enforcement of standards

§ 7573 - State standards and controls

§ 7574 - Definitions

§ 7581 - Definitions

§ 7582 - Requirements applicable to clean-fuel vehicles

§ 7583 - Standards for light-duty clean-fuel vehicles

§ 7584 - Administration and enforcement as per California standards

§ 7585 - Standards for heavy-duty clean-fuel vehicles (GVWR above 8,500 up to 26,000 lbs.)

§ 7586 - Centrally fueled fleets

§ 7587 - Vehicle conversions

§ 7588 - Federal agency fleets

§ 7589 - California pilot test program

§ 7590 - General provisions

§ 7601 - Administration

§ 7602 - Definitions

§ 7603 - Emergency powers

§ 7604 - Citizen suits

§ 7605 - Representation in litigation

§ 7606 - Federal procurement

§ 7607 - Administrative proceedings and judicial review

§ 7608 - Mandatory licensing

§ 7609 - Policy review

§ 7610 - Other authority

§ 7611 - Records and audit

§ 7612 - Economic impact analyses

§ 7613 - Repealed.

§ 7614 - Labor standards

§ 7615 - Separability

§ 7616 - Sewage treatment grants

§ 7617 - Economic impact assessment

§ 7618 - Repealed.

§ 7619 - Air quality monitoring

§ 7620 - Standardized air quality modeling

§ 7621 - Employment effects

§ 7622 - Employee protection

§ 7623 - Repealed.

§ 7624 - Cost of vapor recovery equipment

§ 7625 - Vapor recovery for small business marketers of petroleum products

42 U.S. Code § 7450 to 7459 - Repealed.

§ 7625a - Statutory construction

§ 7626 - Authorization of appropriations

§ 7627 - Air pollution from Outer Continental Shelf activities

§ 7628 - Demonstration grant program for local governments

§ 7641 - Noise abatement

§ 7642 - Authorization of appropriations

§ 7651 - Findings and purposes

§ 7651a - Definitions

§ 7651b - Sulfur dioxide allowance program for existing and new units

§ 7651c - Phase I sulfur dioxide requirements

§ 7651d - Phase II sulfur dioxide requirements

§ 7651e - Allowances for States with emissions rates at or below 0.80 lbs/mmBtu

§ 7651f - Nitrogen oxides emission reduction program

§ 7651g - Permits and compliance plans

§ 7651h - Repowered sources

§ 7651i - Election for additional sources

§ 7651j - Excess emissions penalty

§ 7651k - Monitoring, reporting, and recordkeeping requirements

42 U.S. Code § -

§ 7651m - Enforcement

§ 7651n - Clean coal technology regulatory incentives

42 U.S. Code § -

§ 7661 - Definitions

§ 7661a - Permit programs

§ 7661b - Permit applications

§ 7661c - Permit requirements and conditions

§ 7661d - Notification to Administrator and contiguous States

§ 7661e - Other authorities

§ 7661f - Small business stationary source technical and environmental compliance assistance program

§ 7671 - Definitions

§ 7671a - Listing of class I and class II substances

§ 7671b - Monitoring and reporting requirements

§ 7671c - Phase-out of production and consumption of class I substances

§ 7671d - Phase-out of production and consumption of class II substances

§ 7671e - Accelerated schedule

§ 7671f - Exchange authority

§ 7671g - National recycling and emission reduction program

§ 7671h - Servicing of motor vehicle air conditioners

§ 7671i - Nonessential products containing chlorofluorocarbons

§ 7671j - Labeling

§ 7671k - Safe alternatives policy

42 U.S. Code § -

§ 7671m - Relationship to other laws

§ 7671n - Authority of Administrator

42 U.S. Code § -

§ 7671p - International cooperation

§ 7671q - Miscellaneous provisions