Technical Support Document

Approval and Promulgation of Implementation Plans; State of California; 

Sacramento Metro Area; Attainment Plan for 1997 8-Hour Ozone Standard

Additional Supporting Information 

and Analysis of Select Issues 

in the Notice of Proposed Rulemaking 

John Ungvarsky

USEPA, Region 9

September 24, 2014
1

Table of Contents

I. Adopted Measures and Evaluation of Whether Reductions Were Credited in 2018 

Inventory Baseline Used in 2013 Sacramento Plan Update.

II. EPA Adjustments to 2008 and 2011 Reasonable Further Progress (RFP) Milestone 

Demonstrations in 2006 and 2009 State Submittals.

III. EPA Adjustments to Attainment Demonstration and RFP.

IV. Compilation of Measures Adopted by Sacramento Metro Ozone Nonattainment Area 

Districts

V. California Air Resources Board Rules and Measures 1990 - 2013

VI. Air Quality Modeling

VII. Post-2018 Contingency Measure

VIII. Status of Reasonable Available Control Technology State Implementation Plan 

Submittals 
2

I. Adopted District/State Measures and Evaluation of Whether Reductions 

Were Credited in 2018 Inventory Baseline in Tables C1 and C21in the 2013 

Sacramento Plan Update

Measures evaluated:

 Table I-1. Defined and adopted commitment measures in the Sacramento Regional 8-

Hour Ozone Attainment and Reasonable Progress Plan that have been submitted to EPA. 

Reductions from measures in the SIP are eligible for credit towards attainment.

 Table I-2. Other adopted measures in the Sacramento federal ozone nonattainment area 

that achieve emissions reductions greater than 0.1 tpd, are not commitments, and have 

not yet been submitted to EPA.

 Table I-3. Adopted CARB measures not yet approved by EPA (e.g., not in the SIP) but 

credited in C1 and C2.

In terms of districts’ adopted measures and determining which measures were credited in C1 

and C2 of the CARB Staff Report. CARB did not use a rule adoption cutoff date for determining 

which districts rules reductions should be included. Instead, CARB requested all districts 

provide approved local rules for inclusion in the inventory by September 2012. In other words, 

even if a rule was adopted prior to September 2012, it wasn’t necessarily credited in the 

inventory baseline for the plan. September 2012 served as a date after which the districts could 

no longer provide CARB with adopted rules for inclusion in the inventory reflected in tables C1 

and C2. The information in Tables 1 and 2, plus for consumer products in Table 3, was 

confirmed by CARB. (See docket for more details of email exchanges between EPA and CARB.)

Table I-1. Defined and adopted commitment measures in the Sacramento Regional 8-Hour Ozone 

Attainment and Reasonable Progress Plan that have been submitted to EPA. Reductions from 

measures in the SIP are eligible for credit towards attainment.

Rule No. Rule Title

Date of 

Adoption

Estimated 

Reductions

(2018 planning 

inventory, tpd) 

Reductions 

credited in 

C1 and C2 

inventories?

Approved 

into the SIP?

NOx VOC

YSAQMD 

2.31

Surface Preparation and 

Cleanup 5/14/2008 - 0.8 No No

FRAQMD 

3.14 Solvent Degreasing 5/8/2008 - <0.1 No No

 

1 CARB’s Staff Report includes tables C1: Summer Planning Emissions Inventory for Nitrogen Oxides (NOx) in tons 

per day Sacramento Nonattainment Area and C2: Summer Planning Emissions Inventory for Volatile Organic 

Compounds (VOC) in tons per day Sacramento Nonattainment Area.
3

YSAQMD 

2.37

Large Water Heaters and 

Small Boilers 4/8/2009 0.5 - No Yes

PCAPCD 

245

Surface Coating of Metal 

Parts and Products 8/20/2009 - <0.1 No Yes

FRAQMD 

3.22 Internal Combustion Engines 6/1/2009 <0.1 - No Yes

PCAPCD 

218 Architectural Coatings 10/14/2010 - 0.2 No Yes

SMAQM

D 459 Automotive Refinishing 8/25/2011 - 0.1 No Yes

PCAPCD 

247

Large Water Heaters and 

Small Boilers 10/10/2013 0.5 - No Noa

a On September 5, EPA Region Regional Administrator Jared Blumenfeld signed proposed rulemaking and direct 

final notices to approve notices acting on PCAPCD 247. It is expected that the approval of PCAPCD 247 will be 

effective prior to a final action on the Sacramento ozone plan.

Table I-2. Other adopted measures in the Sacramento federal ozone nonattainment area that achieve 

emissions reductions greater than 0.1 tpd, are not commitments, and have not yet been submitted to 

EPA.a

Rule No. Rule Title Date of 

Adoption

Estimated Reductions

(tpd) 

Reductions 

included in C1 

and C2 

inventories in

CARB Staff 

Report?

NOx VOC

YSAQMD 

2.26

Motor Vehicle & Mobile 

Equipment Coating

11/9/1994,

8/13/1997 - 0.3 Yes

YSAQMD 

2.39

Wood Products Coatings 

Operations 2/10/1999 - 0.2 Yes

SMAQMD 

442 Architectural Coatings 5/24/2001 - 0.6 No

SMAQMD 

460 Adhesives and Sealants 11/20/2000 - 1 .0 Yes

aAlthough there are other district measures adopted but not in the SIP, any measure providing less than 0.1 tpd in 

additional reductions was not included in this table.
4

Table I-3. Adopted CARB measures not yet approved by EPA (e.g., not in the SIP) but credited in C1 and 

C2. 

Measure Title Date of 

Adoption

Reductions 

(tpd) Status - - rule submitted, 

authorization or waiver 

NOx VOC requested?

Large Spark Ignition Engines 11/21/08 TBD TBD

On June 2, 2014, CARB 

submitted an authorization 

request. Authorization 

granted for previous Large SI 

engines measure. Combined 

NOx and VOC reductions 

statewide are 1.9 tpd in 2014 

and 4.5 tpd in 2020.

Consumer Products 11/18/2010 - 0.3a

Federal Register notices 

signed on August 5, 2014.b

Estimated 6.7 tpd reduction 

statewide.

a EPA estimate based on population in SMA.

b On August 5, 2014, EPA Region Regional Administrator Jared Blumenfeld signed proposed rulemaking and direct 

final notices acting on the November 2010 consumer products rule. The notices are pending publication in the 

Federal Register. It is expected that the approval of the November 2010 consumer products rule will be effective 

prior to a final action on the Sacramento ozone plan.

The Districts have made progress in adopting measures committed to in the 2009 Plan. In 

the 2013 Plan Update, the Districts revised their remaining commitment measures and 

estimated reductions. Table I-4 lists the Districts’ remaining commitment measures and 

estimated reductions that are not yet in the SIP. 

Table 1-3. Defined Districts’ Measures in the 2013 Plan Update that are not yet in the SIP, 

Expected Emissions Reductions. (2018 planning inventory, tpd) 

Control Measure Category District Measures Adoption 

Year

Expected 

Reductions

NOx VOC

Architectural Coatings

EDCAQMD 215 2013 - 0.2

FRAQMD 3.15 2014 - <0.1

SMAQMD 442 2014 - 0.9

YSAQMD 2.14 2014 - 0.2

Automotive Refinishing

FRAQMD 3.19 2016 - <0.1

PCAPCD 234 2015 - <0.1
5

YSAQMD 2.26 12/10/2008a- <0.1

Degreasing/Solvent Cleaning

FRAQMD 3.14 8/1/2011a- <0.1

YSAQMD 2.24/2.31 5/8/2013a- 0.7

Graphic Arts YSAQMD 2.29 2016 - na

Natural Gas Production and 

Processing SMAQMD 461 2014 - 0.1

Boilers, Steam Generator, and 

Process Heaters YSAQMD 2.27 2016 0.2 -

Large Water Heaters and Small 

Boilers

EDCAQMD 239 2015 <0.1 -

FRAQMD 3.23 2016 0.0 -

Mobile Source Incentive Programs 

(On Road)

ONMS-LD-1, ONMS-HD1

2012 0.5 < 0.1

Other Nonregulatory Control 

Measures

OFMS-HD-1, OFMS-SI-1, 

TCM-ONMS-ED-1

2009-2012 < 0.1 < 0.1

Totals 0.7 2.3

na: not available

a

Submitted by CARB to EPA for inclusion in the SIP and pending processing by EPA 
6

II. EPA Adjustments to 2008 and 2011 Reasonable Further Progress

Milestone Demonstrations in 2006 and 2009 State Submittals

Reasonable Further Progress Calculations

The table below represents the RFP demonstrations in the Sacramento ozone 

nonattainment area for the 1997 ozone standard. Because the 2013 Plan Update did not 

include recalculated milestone demonstrations for 2008 and 2011, EPA undertook the process 

of recalculating the 2008 and 2011 demonstrations using the revised 2002 baseline inventory in 

the 2013 Plan Update. The recalculation of the 2008 and 2011 milestones involved using the 

revised 2002 inventory baseline and then adjusting the 2008 and 2011 forecasted VOC and NOx 

inventories in the 2006 and 2009 State submittals to account for the change in the 2002 

baseline inventory. The original 2008 and 2011 demonstrations submitted by the State are 

provided further below. The process EPA used to make the adjustments is described below.

Calculation of RFP Demonstrations for SMA

VOC Emission Calculations (tons/day) 2002 2008a 2011b 2014c 2017c 2018c

1. 2002 Baseline VOC inventoryc 147 147 147 147 147 147

2. Non-creditable FMVCP/RVP adjustmentsd 0 13e 11e 11 12 12

3. Adjusted 2002 baseline VOC inventory 

(Line 1 – Line 2) 134 136 136 135 135

4. VOC emissions forecast with existing 

controls + ERCs 120e 120e 106 100 99

5. Adjustments to remove reductions from 

measures not yet approved by EPAf

- 2 2 2 2

6. RFP commitment for VOC reductions from 

new measures

- 0 0 0 0

7. Forecasted VOC creditable reductions since 

2002 (ine 3 - Line 4 - Line 5 + Line 6) 15 15 28 33 34

8. Forecasted % VOC reductions since 2002 

(Line 7 ÷ Line 3) 11% 11% 21% 25% 26%

9. RFP % reduction required from 2002 

adjusted baseline VOC inventoryg

18% 27% 36% 45% 48%

10. Forecasted % VOC shortfall (Line 9 – Line 

8) 7% 16% 15% 20% 22%

11. VOC shortfall previously addressed 

provided by NOx substitution % - 7% 16% 16% 20%

12. Actual VOC shortfall 7% 9% 0% 4% 2%
7

NOx Emission Calculations (tons/day) 2002 2008a 2011b 2014c 2017c 2018c

13. 2002 Baseline NOx inventorya 165 165 165 165 165 165

14. Non-creditable FMVCP adjustmentsd 0 7

e 11e 10 11 11

15. Adjusted 2002 baseline NOx inventory 

(Line 13 – Line 14)

158 154 155 154 154

16. NOx emissions forecast with existing 

controls + ERCs 126e 126

e 93 80 77

17. Adjustments to remove reductions from 

measures not yet approved by EPAf

0 3 1 1

18. RFP commitment for NOx reductions from 

new measures

0 0 0 0

19. Forecasted NOx creditable reductions 

since 2002 (Line 15 - Line 16 - Line 17 + Line 

18)

32 29 59 74 76

20. Forecasted % NOx reductions since 2002 

(Line 19 ÷ Line 16) 21% 19% 38% 48% 50%

21. NOx previously used for VOC shortfall by 

NOx substitution %

0% 7% 16% 16% 20%

22. NOx available for VOC shortfall by NOx 

substitution and contingency %

21% 12% 22% 32% 30%

23. NOx substitution needed for VOC shortfall 

% (Same as Line 12)

7% 9% 0% 4% 2%

24. Forecasted % NOx reduction surplus (Line 

22 – Line 23)

14% 3% 22% 28% 27%

25. Contingency measure reserve achieved? Yes Yes Yes Yes Yes

26. RFP achieved? Yes Yes Yes Yes Yes

a

Sacramento Regional Nonattainment Area 8-Hour Ozone Reasonable Further Progress Plan 2002-2008, February 

2006, Chapter 6, table 6-1.

b

Sacramento Regional 8-Hour Ozone Attainment and Reasonable Further Progress Plan, December 19, 2008, 

Chapter 5, tables 5-2 and 5-3, adjusted by EPA.

c

Sacramento Regional 8-Hour Ozone Attainment and Reasonable Further Progress Plan, September 26, 2013, 

Chapter 13, table 13-1.

d CARB provided the non-creditable FMVCP/RVP adjustments in documents listed immediately above.

e Adjusted by EPA for consistency with baseline in 2013 Ozone Plan. See TSD.

f See TSD. Does not include EPA adjustments for measures approved by EPA (see table 10) but not yet credited by 

State in RFP demonstration.

g RFP reduction requirements contained in EPA’s Final Rule to Implement the 8-Hour Ozone NAAQS (Phase 2) 

published in the November 29, 2005 Federal Register. See 70 FR 70612.

Note: Because of rounding convention, values in table may not reflect sum of underlying numbers.
8

RFP demonstration in February 24, 2006 Plan submittal from ARB. 
9

RFP demonstration in April 19, 2009 Plan submittal from ARB. 
10

RFP demonstration in December 31, 2013 Plan submittal from ARB.
11

Explanation of RFP Adjustments by EPA

 Adjustments to 2002 VOC and NOx inventories

o EPA replaced the 2002 VOC inventory baseline estimates in the 2008 (150 tpd) and 

2011 (160 tpd) submittals with the 2002 inventory baseline in the 2013 Plan Update 

(147 tpd). This was done to allow for a consistent comparison across all the 

milestone years required for the 1997 ozone standard. 

o EPA replaced the 2002 NOx inventory baseline estimates in the 2008 (193 tpd ) and 

2011 (196 tpd) submittals with the 2002 inventory baseline in the 2013 Plan Update 

(165 tpd). This was done to allow for a consistent comparison across all the 

milestone years. This was done to allow for a consistent comparison across all the 

milestone years required for the 1997 ozone standard. 

 Non-creditable Federal Motor Vehicle Control Program (FMVCP) adjustments

o For 2008, EPA adjusted the non-creditable VOC FMVCP reductions (13 tpd) in 2006 

SIP submittal as follows. 13 tpd x ratio of baselines in 2006 and 2013 submittals [i.e., 

147 (baseline in 2013 SIP submittal) divided by 150 (baseline in the 2006 SIP 

submittal]. This was done to allow for a consistent comparison across all the 

milestone years required for the 1997 ozone standard. Because the 2013 Plan 

Update did not include recalculated milestone demonstration for 2008, EPA 

undertook the process of recalculating the 2008 demonstration using the most up to 

date 2002 baseline inventory. This recalculation involved using the most up-to-date 

2002 inventory baseline and then adjusting the 2008 non-creditable VOC FMVCP 

adjustment to account for the lower 2002 baseline inventory in the 2013 Plan 

Update. For 2008, this resulted in a slightly lower non-creditable VOC FMVCP (12.7 

tpd rounded to 13 tpd) compared to the 13 tpd in the 2006 submittal.

o For 2011, EPA adjusted the non-creditable non-creditable VOC FMVCP reductions 

(11.9 tpd) in 2009 SIP submittal as follows. 11.9 tpd x ratio of baselines in 2009 and 

2013 submittals [i.e., 147 (baseline in 2013 SIP) divided by 160 (baseline in the 2008 

SIP)]. This was done to allow for a consistent comparison across all the milestone 

years required for the 1997 ozone standard. Because the 2013 Plan Update did not 

include recalculated milestone demonstration for 2011, EPA undertook the process 

of recalculating the 2011 demonstrations using the most up to date 2002 baseline 

inventory. This recalculation involved using the most up-to-date 2002 inventory 

baseline and then adjusting the 2011 non-creditable FMVCP adjustment to account 

for the lower 2002 baseline inventory in the 2013 Plan Update. For 2011, this
12

resulted in a slightly lower non-creditable VOC FMVCP (10.9 tpd rounded to 11 tpd)

compared to the 11.9 tpd in the 2009 submittal.

o For 2008, EPA adjusted the non-creditable NOx FMVCP reductions (8 tpd) in 2006 

submittal as follows. 8 x ratio of baselines in 2006 and 2013 submittals [i.e., 165 tpd 

(baseline in 2013 SIP submittal) divided by 193 tpd (baseline in the 2006 SIP 

submittal)]. Because the 2013 Plan Update did not include recalculated milestone 

demonstration for 2008, EPA undertook the process of recalculating the 2008 

demonstration using the most up to date 2002 baseline inventory. This recalculation 

involved using the most up-to-date 2002 inventory baseline and then adjusting the 

2008 non-creditable NOx FMVCP adjustment to account for the lower 2002 baseline 

inventory in the 2013 Plan Update. For 2008, this resulted in a lower non-creditable 

NOx FMVCP (7 tpd) compared to the 8 tpd in the 2006 submittal.

o For 2011, EPA adjusted the non-creditable NOx FMVCP (13 tpd) in 2009 submittal as 

follows. 13 tpd x ratio of baselines in 2008 and 2013 submittals [i.e., 165 tpd 

(baseline in 2013 SIP submittal) divided by 196 tpd (baseline in the 2006 SIP 

submittal)]. This was done to allow for a consistent comparison across all the 

milestone years required for the 1997 ozone standard. Because the 2013 Plan 

Update did not include recalculated milestone demonstration for 2011, EPA 

undertook the process of recalculating the 2011 demonstrations using the most up 

to date 2002 baseline inventory. This recalculation involved using the most up-todate 2002 inventory baseline and then adjusting the 2011 non-creditable NOx

FMVCP adjustment to account for the lower 2002 baseline inventory in the 2013 

Plan Update. For 2011, this resulted in a lower non-creditable NOx FMVCP (11 tpd) 

compared to the 13 tpd forecast in the 2009 submittal.

 Adjustment to Emissions Forecasts with existing controls + ERCs (see b above)

o For 2008, adjustment to VOC forecast (122 tpd ) in 2006 SIP submittal as follows. 

122 tpd x ratio of baselines in 2006 and 2013 submittals [i.e., 147 (baseline in 2013 

SIP submittal) divided by 150 (baseline in the 2006 SIP submittal]. This was done to 

allow for a consistent comparison across all the milestone years required for the 

1997 ozone standard. Because the 2013 Plan Update did not include recalculated 

milestone demonstration for 2008, EPA undertook the process of recalculating the 

2008 demonstration using the most up to date 2002 baseline inventory. This 

recalculation involved using the most up-to-date 2002 inventory baseline and then 

adjusting the 2008 VOC projected inventory to account for the lower 2002 baseline 

inventory in the 2013 Plan Update. For 2008, this resulted in a slightly lower (120

tpd) forecast compared to the 122 tpd forecast in the 2006 submittal.
13

o For 2011, adjustment to VOC forecast (130 tpd) in 2009 SIP submittal as follows. 130 

tpd x ratio of baselines in 2009 and 2013 submittals [i.e., 147 (baseline in 2013 SIP) 

divided by 160 (baseline in the 2008 SIP)]. This was done to allow for a consistent 

comparison across all the milestone years required for the 1997 ozone standard. 

Because the 2013 Plan Update did not include recalculated milestone demonstration 

for 2011, EPA undertook the process of recalculating the 2011 demonstrations using 

the most up to date 2002 baseline inventory. This recalculation involved using the 

most up-to-date 2002 inventory baseline and then adjusting the 2011 projected VOC 

inventory to account for the lower 2002 baseline inventory in the 2013 Plan Update. 

For 2008, this resulted in a lower (120 tpd) forecast compared to the 130 tpd 

forecast in the 2009 submittal.

o For 2008, adjustment to NOx forecast (147 tpd) in 2006 submittal. 147 x ratio of 

baselines in 2006 and 2013 submittals [i.e., 165 tpd (baseline in 2013 SIP submittal) 

divided by 193 tpd (baseline in the 2006 SIP submittal)]. Because the 2013 Plan 

Update did not include recalculated milestone demonstration for 2008, EPA 

undertook the process of recalculating the 2008 demonstration using the most up to 

date 2002 baseline inventory. This recalculation involved using the most up-to-date 

2002 inventory baseline and then adjusting the 2008 NOx projected inventory to 

account for the lower 2002 baseline inventory in the 2013 Plan Update. For 2008, 

this resulted in a significantly lower (126 tpd) forecast compared to the 147 tpd 

forecast in the 2006 submittal.

o For 2011, adjustment to NOx forecast (146 tpd) in 2008 submittal. 147 tpd x ratio of 

baselines in 2008 and 2013 submittals [i.e., 165 tpd (baseline in 2013 SIP submittal) 

divided by 196 tpd (baseline in the 2006 SIP submittal)]. This was done to allow for a 

consistent comparison across all the milestone years required for the 1997 ozone 

standard. Because the 2013 Plan Update did not include recalculated milestone 

demonstration for 2011, EPA undertook the process of recalculating the 2011 

demonstrations using the most up to date 2002 baseline inventory. This 

recalculation involved using the most up-to-date 2002 inventory baseline and then 

adjusting the 2011 projected NOx inventory to account for the lower 2002 baseline 

inventory in the 2013 Plan Update. For 2008, this resulted in a significantly lower 

(126 tpd) forecast compared to the 146 tpd forecast in the 2009 submittal.

NOTES

EPA’s RFP analysis did not include credit for measures recently approved by EPA but for which the State did not 

credit in their demonstration. See tables I-1 and III-2 in this TSD. EPA allowed credit for measures (i.e., Large Spark 

Ignition Engines) for which CARB has requested a waiver or authorization. 
14

III. EPA Adjustments to Attainment and RFP Demonstrations

Table III-1 below identifies measures and reductions that are currently not approved by EPA but 

for which the State has credited towards attainment and RFP in the Sacramento Plan Update 

and in tables C1 and C2 of CARB’s Staff Report. EPA adjusted the 2018 baseline in the 

attainment demonstration and RFP demonstration by removing the reductions associated with 

these measures or programs.

Table III-1. Measures and reductions currently not approved by EPA but credited by CARB in the 

inventory baselines used for the Sacramento 2018 attainment demonstration.

a 

Agency Title Date of 

Adoption

Estimated 

Reductions (tpd) 

Comments

NOx VOC

YSAQMD Rule 2.26 - Motor Vehicle & 

Mobile Equipment Coating

11/9/1994,

8/13/1997 - 0.3b Not submitted to EPA

YSAQMD Rule 2.39 - Wood Products 

Coatings Operations 2/10/1999 - 0.2b Not submitted to EPA

SMAQMD Rule 460 - Adhesives and 

Sealants 11/20/2000 - 1 .0c Not submitted to EPA

CARB Large Spark Ignition Engines 11/21/08 NA NA

Authorization request

submitted to EPA on 

June 2, 2014. Combined 

NOx and VOC 

reductions statewide

are 1.9 tpd in 2014 and 

4.5 tpd in 2020.

CARB Moyer (non-road) None 0.4 -

See Table C3 in CARB 

2013 Staff Report. Not 

submitted to EPA 

CARB Prop 1B None 0.1 -

See Table C3 in CARB 

2013 Staff Report. Not 

submitted to EPA 

CARB Truck and Bus Rule 4/25/2014 TBD -

Final rulemaking

package not yet 

submitted to OAL. 

Totals 0.5 1.5

a Although there are other district measures adopted but not in the SIP, any measure providing less than 0.1 tpd in 

additional reductions was not included in this table.

b email communications with YSAQMD (Matt Jones), June 2014

c phone conversation with SMAQMD (Kevin Williams), June 18, 2014.
15

Table III-2 below identifies measures and reductions approved by EPA but for which the State 

has not yet credited towards attainment in the Sacramento Plan Update and tables C1 and C2 

in CARB’s Staff Report. EPA credited these reductions in the 2018 attainment.

III-2. Creditable Reductions from Districts Measures Approved by EPA but not credited in C1 and C2 

of CARB’s Staff Report, Expected Emissions Reductions (2018 planning inventory, tpd), and Federal 

Register Cite. EPA adjusted the 2018 baseline by adding reductions associated with these measures.

Agency Rule No. and Title

Estimated 

Reductions

(tpd) EPA Approval

NOx VOC

YSAQMD 2.37 - Large Water Heaters and Small Boilers 0.5 -

75 FR 25778 (May 10, 

2010)

PCAPCD 218 - Architectural Coatings - 0.2 75 FR 18068

(December 5, 2011)

PCAPCD 245 - Surface Coating of Metal Parts and 

Products - <0.1 76 FR 30025(May 24, 2011)

SMAQMD 459 - Automotive Refinishing - 0.1 77 FR 47536

(August 9, 2012)

FRAQMD 3.22 - Internal Combustion Engines <0.1 -

77 FR 12493 (March 

1, 2012)

PCAPCD 247 - Large Water Heaters and Small Boilers 0.5 -

Federal Register

notices signed on 

September 5, 2014 

and pending 

publication.a

Totals 1.0 0.3

a On September 5, EPA Region Regional Administrator Jared Blumenfeld signed proposed rulemaking and direct 

final notices acting on PCAPCD 247. It is expected that the approval of PCAPCD 247 will be effective prior to a final 

action on the Sacramento ozone plan.
16

Summary of Adopted and Creditable Measures

Table III-3. Creditable State Measures Applicable to SMA, Adoption Dates, and Current Statusa

Defined State Measures Adoption Date EPA Approval

Smog Check Improvements August 31, 2009

Elements approved, 75 FR 38023 

(July 1, 2010)

Modifications to Reformulated 

Gasoline Program June 14, 2007

Approved, 75 FR 26653 (May 12, 

2010)

Cleaner In-use Heavy Duty Trucksb December 16, 2010 Approved 77 FR 20308, April 4, 

2012.

Clean Up Existing Harbor Crafts November 15, 2007 Authorization granted; 76 FR 77521, 

December 13, 2011.

Cleaner In-Use Off-Road Equipment 

(over 25 hp) December 17, 2010 Authorization granted; (78 FR 58090, 9/20/13).

Additional Evaporative Emission 

Standards (for Off-Road Sources) 

(e.g., Portable Outboard Marine 

Tanks and Components) 

September 25, 2008

Similar to federal requirement at 40 

CFR 1060.105

Consumer Products Program 

November 17, 2007 Approved, 74 FR 57074, November 4, 

2009

June 26, 2008 Approved, 76 FR 27613, May 12, 2011

September 24, 2009 Approved, 77 FR 7535, February 13, 

2012

November 18, 2010

Proposed rulemaking and direct final 

notices signed on August 5, 2014 and 

pending publication. 

a The 2013 Plan Update and CARB’s 2013 Staff Report describe nonregulatory programs providing emissions 

reductions through agreements resulting in replacement of older locomotives with cleaner engines. The Union 

Pacific (UP) rail yard located in Roseville has benefitted from programs targeting NOx and Particulate Matter (PM) 

emissions. ARB utilized Proposition 1B Goods Movement Emission Reduction Program (“Prop 1B”) funding for 15 

Tier 2 “regional” line haul locomotives. UP also operates six ultra-low emitting genset switch locomotives within 

the Roseville rail yards. The UP 9900, an experimental Tier 3+ locomotive (Tier 4 PM, and Tier 3+ NOx), has been 

assigned to UP Roseville and operates primarily in Northern California. CARB’s 2013 Staff Report indicates 0.07 

tpd of NOx reduction from the State’s Prop 1B. EPA is not crediting the 0.07 tpd NOx reduction associated with 

Prop 1B in the Sacramento attainment demonstration because an enforceable measure supporting the reductions 

has not been submitted to and approved by EPA for inclusion in the SIP. EPA has adopted federal engines 
17

standards for locomotives and the resulting reductions from the federal standards are credited in the 2018 

inventory. See 73 FR 37096 (June 30, 2008) and 40 CFR part 1033, 1065, and 1068 for more details regarding the 

federal locomotive standards.

b On April 25, 2014, the CARB Board approved Resolution 14-3 to revise CARB’s Truck and Bus Rule. The final 

rulemaking package with the revisions to the Truck and Bus Rule has not yet been submitted to the State’s Office 

of Administrative Law (OAL) for their approval.

III-4. Creditable Reductions from Districts Measures Approved by EPA, Expected Emissions 

Reductions (2018 planning inventory, tpd), and Federal Register Cite.

Rule No. Rule Title

Estimated 

Reductions

(tpd) EPA Approval

NOx VOC

YSAQMD 2.37 Large Water Heaters and Small 

Boilers 0.5 -

75 FR 25778 (May 10, 

2010)

PCAPCD 218 Architectural Coatings - 0.2 75 FR 18068

(December 5, 2011)

PCAPCD 245 Surface Coating of Metal Parts and 

Products - <0.1 76 FR 30025(May 24, 2011)

SMAQMD 459 Automotive Refinishing - 0.1 77 FR 47536

(August 9, 2012)

FRAQMD 3.22 Internal Combustion Engines <0.1 -

77 FR 12493 (March 

1, 2012)

PCAPCD 247 Large Water Heaters and Small 

Boilers 0.5 -

Federal Register

notices signed on 

September 3, 2014 

and pending 

publication.a

Totals 1.0 0.3

a On September 3, EPA Region Regional Administrator Jared Blumenfeld signed proposed rulemaking and direct 

final notices acting on PCAPCD 247. It is expected that the approval of PCAPCD 247 will be effective prior to a final 

action on the Sacramento ozone plan
IV. Compilation of Measures Adopted by Sacramento Metro Ozone 

Nonattainment Area Districts

 Sacramento Metropolitan Air Quality Management District (AQMD)

 El Dorado County AQMD

 Feather River AQMD

 Placer County Air Pollution Control District 

 Yolo-Solano AQMD
Status of Sacramento Metropolitan Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

408 Incinerator Burning 11/29/1983 7/18/2008 12/5/1984 49 FR 47490

411 NOx from Boilers, Process Heaters and 

Steam Generators 8/23/2007 7/18/2008 5/6/2009 74 FR 20880

412 Stationary Internal Combustion Engine 6/1/1995 06/16/1995 4/30/1996 61 FR 18959

413 Stationary Gas Turbines 3/24/2005 9/5/2007 1/10/2008 73 FR 1819

414 Natural Gas-fired Water Heater 3/25/2010 4/11/2011 11/1/2011 76 FR 67366

441 Organic Solvents 11/29/1983 11/30/1994 1/24/1985 50 FR 3338

442 Architectural Coatings 5/24/2001 05/18/1998 11/9/1998 63 FR 60214

Revision planned for 2014. 

Reductions from 2001 rule 

not credited in inventory 

baseline for attainment 

plan.

443 Leaks from Synthetic Organic Chemical & 

Polymer Manufacturing 9/5/1996 05/18/1998 11/9/1998 63 FR 60214
2

Status of Sacramento Metropolitan Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

444 Petroleum Solvent Dry Cleaners 11/29/1983 04/19/1984 1/24/1985 50 FR 3338

446 Storage of Petroleum Products 11/16/1993 11/30/1994 9/16/1994 59 FR 47544

447 Organic Liquid Loading (VOC) 4/2/1998 6/23/1998 11/26/1999 64 FR 66393

448

Gasoline Transfer into Stationary Storage 

Containers 2/26/2009 4/11/2011 1/7/2013 78 FR 898

449 Transfer of Gasoline into Vehicle Fuel 

Tanks 2/26/2009 4/11/2011 1/7/2013 78 FR 898

450 Graphic Arts 10/23/2008 4/29/2009 4/9/2010 75 FR 18068

451 Surface Coating of Manufactured Metal 

Parts & Products 10/28/2010 4/05/2011 11/21/2011 76 FR 71886

452 Can Coating 9/25/2008 9/15/2009 4/9/2010 75 FR 18068

453 Cutback & Emulsified Asphalt Paving 

Materials 11/29/1983 4/19/1984 1/24/1985 50 FR 3338

454 Degreasing Operations 9/25/2008 9/15/2009 4/9/2010 75 FR 18068
3

Status of Sacramento Metropolitan Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

455 Pharmaceuticals Manufacturing 9/5/1996 5/18/1998 1/24/1985 50 FR 3338

456 Aerospace Assembly and Component 

Coating Operations 10/23/2008 9/15/2009 7/14/2010 75 FR 40726

458 Large Commercial Bread Bakeries 9/5/1996 5/18/1998 11/9/1998 63 FR 60214

459 Automotive, Truck and Heavy Equipment 

Refinishing Operations 8/25/2011 2/23/2012 8/9/2012 77 FR 47536

460 Adhesives and Sealants 11/20/2000 Not submitted Not in SIP Not in SIP Revision planned for early 

2015 to update rule.

463 Wood Products Coatings 9/25/2008 9/15/2009 4/9/2010 75 FR 18068

464 Organic Chemical Manufacturing 

Operations 9/25/2008 9/15/2009 10/3/2011 76 FR 61057

465 Polyester Resin Operations 9/25/2008 9/15/2009 7/26/2011 76 FR 44493

466 Solvent Cleaning 10/28/2010 4/11/2011 9/29/2011 756 FR 60376

496 Large Confined Animal Facilities 08/24/2006 Not submitted Not in SIP Not in SIP
4

Status of El Dorado County Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

206 Incinerator Burning TBD 11/4/1977 11/2/1978 43 FR 51632

209 Fossil Fuel-Steam Generator Facility TBD 04/10/1975 06/14/1978 43 FR 25674

215 Architectural Coatings 9/27/1994 11/30/1994 7/18/1996 61 FR 37390

216 Organic Compounds 03/12/84 07/10/84 01/24/85 TBD

224 Cutback Asphalt Paving Material 9/27/1994 11/30/1994 8/21/1995 60 FR 43383

225 Solvent Cleaning (Degreasing) 9/27/1994 11/30/1994 8/21/1995 60 FR 43383

229

Industrial, Institutional, and Commercial 

Boilers, Steam Generators, and Process 

Heaters

1/23/2001 5/23/2001 10/10/2001 66 FR 51578

230 Motor Vehicle & Mobile Equipment 

Coating 9/27/1994 11/30/1994 4/30/1996 61 FR 18962

231 Graphic Arts 9/27/1994 11/30/1994 7/11/1997 62 FR 37136

232 Biomass Boilers 9/25/2001 11/09/2001 10/14/2003 68 FR 59121
5

Status of El Dorado County Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

233 Stationary Internal Combustion Engines 6/6/2006 7/2/2002 9/13/2002 67 FR 57960

No additional reductions

from 2006 revision; EPA will 

discuss with EDCAQMD 

possible submittal.

234 VOC RACT Rule - Sierra Pacific Industries 4/25/1995 6/16/1995 9/12/1995 60 FR 47273

235 Surface Preparation and Cleanup 6/27/1995 10/13/1995 4/30/1996 61 FR 18962

236 Adhesives 7/25/1995 10/13/1995 7/18/1996 61 FR 37390

237 Wood Products Coatings 6/27/1995 10/13/1995 7/18/1996 61 FR 37390

238 Gasoline Transfer and Dispensing 3/27/2001 5/23/2001 8/27/2001 66 FR 44974

239 Natural Gas-Fired Residential Water 

Heaters 3/24/1998 6/23/1998 3/30/1999 64 FR 15129

240 Polyester Resin Operations 2/15/2000 7/26/2000 7/17/2001 66 FR 37154
6

Status of El Dorado County Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

244 Organic Liquid Loading and Transport

Vessels 9/25/2001 11/9/2001 7/8/2002 67 FR 45067

245 Valves And Flanges 3/27/2001 5/23/2001 8/27/2001 66 FR 44974

Status of Feather River Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date Of Most 

Recent Rule 

Adopted/ 

Revised

Date Of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

3.5 Combination of Emissions 6/1991 1/28/1981 4/12/1982 47 FR 15585

3.8 Storage and Transfer of Gasoline 6/1991 1/28/1981 5/3/1982 47 FR 15856

3.9 Storage of Petroleum Products 6/1991 1/28/1981 4/12/1982 47 FR 15585

3.14 Solvent Degreasing 8/1/2011 2/10/2014 5/3/1982 47 FR 15856

Minimal reductions (<0.1 

tpd); EPA intends to process 

in 2014/15.
7

Status of Feather River Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date Of Most 

Recent Rule 

Adopted/ 

Revised

Date Of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

3.15 Architectural Coatings 11/13/2002 2/10/2014 5/3/1982 47 FR 15856

Minimal reductions (<0.1 

tpd); district is currently 

revising rule.

3.19 Vehicle and Mobile Equipment Coating 

Operations 8/1/2011 2/10/2014 Not in SIP Not in SIP

Minimal reductions (<0.1 

tpd); EPA intends to process 

in 2014/15.

3.20 Wood Products Coating Operations 8/1/2011 2/10/2014 Not in SIP Not in SIP

Minimal reductions (<0.1 

tpd); EPA intends to process 

in 2014/15.

3.21

Industrial, Institutional, and Commercial 

Boilers, Steam Generators, And Process 

Heaters

6/5/2006 2/10/2014 Not in SIP Not in SIP

No sources in the 

Sacramento ozone NA; EPA 

intends to process in 

2014/15.

3.22 Internal Combustion Engines 6/1/2009 1/10/2010 3/1/2012 77 FR 12493

Status of Placer County Air Pollution Control District Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

206 Incinerator Burning 4/11/2013 2/10/2014 Not in SIP Not in SIP

Minimal VOC and NOx 

reductions; EPA intends to 

process in 2014/2015.
8

Status of Placer County Air Pollution Control District Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

209 Fossil Fuel-Steam Facility 5/24/1977 11/30/1994 4/30/1997 62 FR 23365

212 Storage Of Organic Liquids 6/19/1997 7/18/2008 6/11/2009 74 FR 27714

213 Gasoline Transfer Into Stationary Storage 

Containers 2/21/2013 2/10/2014 3/3/1997 62 FR 23365

No additional reductions 

from 2013 revision; EPA 

intends to process in 

2014//2015.

214 Transfer Of Gasoline Into Vehicle Fuel 

Tanks 2/21/2013 2/10/2014 4/30/1997 62 FR 23365

No additional reductions 

from 2013 revision; EPA 

intends to process in 

2014/2015.

215 

Transfer Of Gasoline Into Tank Trucks, 

Trailers and Railroad Tank Cars At Loading 

Facilities

6/19/1997 7/18/2008 1/31/2011 76FR5277

216 Degreasing Operations 12/11/2003 7/18/08 5/5/2010 75 FR 24406

217 Cutback And Emulsified Asphalt Paving 

Materials 10/19/1993 11/30/1994 4/30/1997 62 FR 23365

218 Architectural Coatings 10/14/2010 4/11/2011 12/5/2011 76 FR 75795

219 Organic Solvents 5/20/1985 11/30/1994 4/30/1997 62 FR 23365
9

Status of Placer County Air Pollution Control District Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

223 Metal Container (Can) Coating 10/6/1994 11/30/1994 3/23/1995 60 FR 15241

229 Fiberboard Manufacturing 6/28/1994 2/12/2014 7/14/2014 79 FR 40675 Request to withdraw rule; 

no sources.

230 Plastic Products And Materials - Paper 

Treating Operation 6/28/1994 2/12/2014 7/14/2014 79 FR 40675 Request to withdraw rule; no sources

231 Industrial, Institutional, And Commercial 

Boilers, 10/09/1997 3/17/2009 11/1/2011 76 FR 67366

233 Biomass Boilers 6/14/2012 9/21/12 8/29/2013 78 FR 53250

234 Automotive Refinishing Operations 

(effective 7/1/2011) 10/14/2010 4/11/2011 12/05/2011 76 FR 75795

235 Adhesives 10/11/2012 2/6/2013 8/30/2013 78 FR 53680

236 Wood Products Coating Operations 10/14/2010 4/11/2011 11/21/2011 76 FR 71886

238 Factory Coating Of Flat Wood Paneling 10/14/10 4/11/2011 11/21/2011 76 FR 71886

239 Graphic Arts Operations 10/11/2012 2/6/2013 3/13/2014 79 FR 14178
10

Status of Placer County Air Pollution Control District Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

240 Surface Preparation and Cleanup 12/11/2003 9/24/13 3/13/2014 79 FR 14178

241 Crematories 4/11/2013 Not submitted Not in SIP Not in SIP No sources in District

242 Stationary Internal Combustion Engines 4/10/2003 12/7/2010 11/1/2011 76 FR 67366

243 Polyester Resin Operations 4/10/2003 12/7/2010 10/3/2011 76 FR 61057

244 Semiconductor Operations 2/9/1995 5/24/1995 7/25/1996 61 FR 38571

245 Surface Coating of Metal Parts and 

Products 8/20/2009 1/10/2010 5/24/2011 76 FR 30025

246 Natural Gas-Fired Water Heaters 6/19/1997 12/7/2010 11/1/2011 76 FR 67366

247 Natural Gas-Fired Water Heaters, Small 

Boilers, and Process Heaters 10/10/2013 5/13/14 Not in SIP Not in SIP

Federal Register notices 

signed on September 5, 

2014 and pending 

publication

249 Surface Coating of Plastic Parts and 

Products 8/8/2013 5/13/14 Not in SIP Not in SIP No reductions; EPA intends to process in 2014/2015.
11

Status of Placer County Air Pollution Control District Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

250 Stationary Gas Turbines 10/17/1994 10/19/1994 8/23/1995 60 FR 43713

Status of Sacramento Metropolitan Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

408 Incinerator Burning 11/29/1983 7/18/2008 12/5/1984 49 FR 47490

411 NOx from Boilers, Process Heaters and 

Steam Generators 8/23/2007 7/18/2008 5/6/2009 74 FR 20880

412 Stationary Internal Combustion Engine 6/1/1995 06/16/1995 4/30/1996 61 FR 18959

413 Stationary Gas Turbines 3/24/2005 9/5/2007 1/10/2008 73 FR 1819

414 Natural Gas-fired Water Heater 3/25/2010 4/11/2011 11/1/2011 76 FR 67366
12

Status of Sacramento Metropolitan Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

441 Organic Solvents 11/29/1983 11/30/1994 1/24/1985 50 FR 3338

442 Architectural Coatings 5/24/2001 05/18/1998 11/9/1998 63 FR 60214

Revision planned for 2014. 

Reductions from 2001 rule 

not credited in inventory 

baseline for attainment 

plan.

443 Leaks from Synthetic Organic Chemical & 

Polymer Manufacturing 9/5/1996 05/18/1998 11/9/1998 63 FR 60214

444 Petroleum Solvent Dry Cleaners 11/29/1983 04/19/1984 1/24/1985 50 FR 3338

446 Storage of Petroleum Products 11/16/1993 11/30/1994 9/16/1994 59 FR 47544

447 Organic Liquid Loading (VOC) 4/2/1998 6/23/1998 11/26/1999 64 FR 66393

448 Gasoline Transfer into Stationary Storage 

Containers 2/26/2009 4/11/2011 1/7/2013 78 FR 898

449 Transfer of Gasoline into Vehicle Fuel 

Tanks 2/26/2009 4/11/2011 1/7/2013 78 FR 898

450 Graphic Arts 10/23/2008 4/29/2009 4/9/2010 75 FR 18068
13

Status of Sacramento Metropolitan Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

451 Surface Coating of Manufactured Metal 

Parts & Products 10/28/2010 4/05/2011 11/21/2011 76 FR 71886

452 Can Coating 9/25/2008 9/15/2009 4/9/2010 75 FR 18068

453 Cutback & Emulsified Asphalt Paving 

Materials 11/29/1983 4/19/1984 1/24/1985 50 FR 3338

454 Degreasing Operations 9/25/2008 9/15/2009 4/9/2010 75 FR 18068

455 Pharmaceuticals Manufacturing 9/5/1996 5/18/1998 1/24/1985 50 FR 3338

456 Aerospace Assembly and Component 

Coating Operations 10/23/2008 9/15/2009 7/14/2010 75 FR 40726

458 Large Commercial Bread Bakeries 9/5/1996 5/18/1998 11/9/1998 63 FR 60214

459 Automotive, Truck and Heavy Equipment 

Refinishing Operations 8/25/2011 2/23/2012 8/9/2012 77 FR 47536

460 Adhesives and Sealants 11/20/2000 Not submitted Not in SIP Not in SIP Revision planned for early 

2015 to update rule.

463 Wood Products Coatings 9/25/2008 9/15/2009 4/9/2010 75 FR 18068
14

Status of Sacramento Metropolitan Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

464 Organic Chemical Manufacturing 

Operations 9/25/2008 9/15/2009 10/3/2011 76 FR 61057

465 Polyester Resin Operations 9/25/2008 9/15/2009 7/26/2011 76 FR 44493

466 Solvent Cleaning 10/28/2010 4/11/2011 9/29/2011 756 FR 60376

496 Large Confined Animal Facilities 08/24/2006 Not submitted Not in SIP Not in SIP

Status of Yolo-Solano Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

2.10 Incinerator Burning TBD 2/21/1972 5/31/1972 37 FR 10856

2.13 Organic Solvents 5/24/1994 11/30/1994 4/30/1996 61 FR 18962
15

Status of Yolo-Solano Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

2.14 Architectural Coatings 11/14/2001 01/22/2002 1/2/2004 69 FR 34

2.15 Disposal and Evaporation of Solvents TBD 06/22/1978 1/29/1979 44 FR 5663 Recinded

2.16 Fuel Burning Equipment TBD 02/21/1972 1/29/1979 44 FR 5664

2.21 Organic Liquid Storage & Transfer 9/14/2005 10/20/2005 10/31/2006 71 FR 63694

2.22 Gasoline Dispensing Facilities 6/12/2002 08/06/2002 1/23/2003 68 FR 3190

2.23 Fugitive Hydrocarbon 8/13/1997 11/30/1994 11/26/1999 64 FR 66393

1997 version not yet 

submitted, but reductions 

minimal.

2.24 Solvent Cleaning Operations (Degreasing) 11/14/1990 05/13/1991 12/13/1994 59 FR 64130 Request to be rescinded 

submitted on 2/10/2014

2.25 Surface Coating or Manufactured Metal 

Parts and Products 5/14/2008 11/30/1994 2/12/1996 61 FR 5288

2008 version not yet 

submitted, but reductions 

minimal.

2.26 Motor Vehicle & Mobile Equipment 

Coating 12/10/2008 02/24/1995 4/30/1996 61 FR 18962 EPA has requested submittal of 2008 rule

2.27

Industrial, Institutional, and Commercial 

Boilers, Steam Generators, and Process 

Heaters

8/14/1996 10/18/1996 6/17/1997 62 FR 32691
16

Status of Yolo-Solano Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

2.28 Cutback & Emulsified Asphalt 5/25/1994 11/30/1994 2/5/1996 61 FR 4215

2.29 Graphic Arts Printing Operations 5/14/2008 11/30/1994 8/21/1998 63 FR 44792

2008 version not yet 

submitted, but reductions 

minimal.

2.30 Polyester Resin Operation 5/14/2008 06/03/1999 7/21/1999 64 FR 39037

2008 version not yet 

submitted, but reductions 

minimal.

2.31 Surface Preparation and Cleanup 5/8/2013 2/10/2014 4/2/1999 64 FR 15922 EPA intends to process in 

2014/2015.

2.32 Stationary Internal Combustion Engines 10/10/2001 11/28/2001 1/28/2002 67 FR 3816

2.33 Adhesives Operation 5/14/2008 06/05/2003 3/22/2004 69 FR 13234

2008 version not yet 

submitted, but reductions 

minimal.

2.34 Stationary Gas Turbines 7/13/1994 09/28/1994 9/3/1998 63 FR 46892

2.35 Pharmaceutical Manufacturing Operations 5/14/2008 11/30/1994 2/24/1997 62 FR 8172 EPA has requested 

submittal of 2008 rule.

2.37 Natural Gas-Fired Water Heaters and 

Small Boilers 4/8/2009 09/15/2009 5/10/2010 75 FR 25778

2.38 Standards for Municipal Solid Waste 

Landfills 3/12/1997 12/3/1998 withdrawn 64 FR 51447

CAA Section 111(d) State 

Plan for landfills. Adopted 

8/14/97
17

Status of Yolo-Solano Air Quality Management District NOx and VOC Rules

Rule No. Rule

Date of Most 

Recent Rule 

Adopted/ 

Revised

Date of Most 

Recent Rule 

Submitted

Date Rule 

Approved into 

the SIP

Federal Register 

Cite Comments

2.39 Wood Products Coatings Operations 5/14/2008 Not submitted Not in SIP Not in SIP EPA has requested 

submittal of 2008 rule

2.41 Expandable Polystyrene Manufacturing 

Operations 9/10/2008 12/23/2008 9/8/2011 76 FR 55581

2008 version not yet 

submitted, but reductions 

minimal.

2.42 Nitric Acid Production 5/13/2009 09/15/2009 5/10/2010 75 FR 25778

2.43 Biomass Boilers 10/10/2010 4/11/2011 7/2/2012 77 FR 39181

2.44 Central Furnaces 5/13/2009 Not submitted Not in SIP Not in SIP EPA has requested 

submittal of 2009 rule
V. California Air Resources Board Rules and Measures 1990 - 2013

August 27, 2014

Compiled by USEPA, Region 9
19

Table of Acronyms

AB Assembly Bill

ACC Advanced Clean Car 

CAFE Corporate Average Fuel Economy

CARB California Air Resources Board or The Board

CARBOB California Reformulated Gasoline Blendstock for Oxygenate Blending

CaRFG California Reformulated Gasoline

CCR California Code of Regulations

CFR Code of Federal Regulations

CHE Cargo Handling Equipment

EWIR Emission Warranty Information Reporting and Recall

FR Federal Register

GDF Gasoline Dispensing Facility

GHG Greenhouse Gas 

HDGE Heavy-Duty Gas Engine

HDV Heavy-Duty Vehicle

ISOR Initial Statement of Reasons 

LCFS Low Carbon Fuel Standard

LDT Light-Duty Trucks loaded vehicle weight up to 8500 pounds 

LDV Light-Duty vehicle

LEV I First generation Low Emission Vehicle program, adopted in a 1990-1991 rulemaking, and 

generally applicable in the 1994-2003 model years 

LEV II (or 2) Second generation Low Emission Vehicle program, adopted in a 1998 -1999 rulemaking, 

and generally applicable in the 2004 and subsequent model years 

LEV III (or 3) Third generation Low Emission Vehicle program (criteria pollutant and greenhouse gas 

emission fleet standards), adopted in 2012, and generally applicable to 2015 and 

subsequent model years for Criteria Pollutants, and applicable to 2017 and subsequent 

model years for Greenhouse Gases. 

MIR Maximum Incremental Reactivity

MY Model Year

NOx Oxides of Nitrogen

OAL (Calofornia) Office of Administrative Law 

OBD On-Board Diagnostics

OHRV Off-Highway Recreational Vehicles

ORCI Off-Road Compression-Ignition

PERP Portable Equipment Registration Program 

PM Particulate Matter

RVP Reid Vapor Pressure

SCAQMD South Coast Air Quality Management District

SORE Small Off-Road Engines

T Title

TRU Transport Refrigeration Units

U.S. EPA United States Environmental Protection Agency 

VOC Volatile Organic Compound

ZEB Zero Emission Bus

ZEV Zero Emission Vehicle
20

Compilation of State Measures

Table A-1 is a list of all measures adopted by CARB from 1990 until the end of 2013. The 

table is intended to include any substantive rules that generated emissions reductions in the 

Sacramento ozone nonattainment area during the 1990-2013 period.

This list does not include the limits on pesticide emissions adopted by the California 

Department of Pesticide Regulation nor the State’s inspection and maintenance program 

adopted by the California Bureau of Automotive Repair.

Measures that are categorized as Not Applicable are either solely administrative (e.g., 

permit fees, state ambient air quality standards), do not address ozone attainment plan 

precursors (e.g., asbestos air toxic control measure) in the Sacramento nonattainment area, or 

otherwise do not affect emissions (e.g., test methods) in the Sacramento area.

NOTE: The hearing date is the date that appears next to each measure listed in CARB’s 

Rulemaking Activity web page (http://www.arb.ca.gov/regact/regact.htm) covering rules 

adopted between 1994 to present. The hearing date is also generally the date that the 

California Air Resources Board adopts a resolution in which it approves the measure or 

amendments to an existing measure. The hearing date is not the date that the measure was 

approved by the California Office of Administrative Law.

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Antiperspirant/Deodorants. . T 17, CCR, 94500-94506 11/09/89 Consumer products

Transported Pollutants (Ozone). . T 17, CCR, 70500 12/04/89 Not applicable

Emission Control System Warranty. . T 13, CCR, 2035-2041, 

1977 12/14/89 On-road

Non-vehicular Test Methods. . T 17, CCR, 94002, 94003 17, &26, 

94146-94149, 94132, 94135, 94139, 94140 01/11/90 Not applicable

Certification Procedure for Aftermarket Parts. VC 27156 & 

38391 02/08/90 On-road

Airborne Toxic Control Measure for Asbestos in Surfacing 

Applications. . T 17, & 26, CCR, 93106 04/12/90 Not applicable

Test Method for Asbestos in Serpentine Aggregate. . T 17, & 26, 

CCR, 94147, Method 435 04/12/90 Not applicable

Air Toxics "Hot Spots" Fee Regulation. T 17, & 26, CCR, 90700-

90704, 93300-93347 05/10/90 Not applicable

Airborne Air Toxic Measure for Ethylene Oxide from Sterilizers 

& Aerators. . T 17, CCR, 93108 05/10/90 Not applicable
21

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Permit Fee Regulations for Non-vehicular Sources. . T 17, CCR, 

90800.1, 90800, 90802-90803 05/10/90 Not applicable

Air Toxics "Hot Spots" Emissions Inventory Criteria and 

Guidelines. . T 17, & 26, CCR, 93300-93347 06/14/90 Not applicable

Consumer Products Regulations for the BAAQMD. . T 17, CCR, 

94520-94526 06/14/90 Consumer products

Criteria for Area Designations for the State Ambient Air Quality 

Standard. . T 17, CCR, 70303 & 70304 06/14/90 Not applicable

Emission Standards for Medium Duty Vehicles. . T 13, CCR, 

1900, 1956.8, 1960.1, 1968.1, 2061, 2112, 2139 06/14/90 On-road

Wintertime Limits for Sulfur in Diesel Fuel. . T 13, CCR, 2255 06/21/90 Fuels

Dioxins Airborne Toxic Control Measure for Medical Waste 

Incinerators. . T 17, CCR, 93104 07/12/90 Not applicable

Emissions Reduction Accounting Procedures for California Clean 

Air Act. . T 17, CCR, 70700-70704 07/12/90 Not applicable

Identification of Inorganic Arsenic as a Toxic Air Contaminant. . 

T 17, & 26, CCR, 93000 07/12/90 Not applicable

Evaporative Emission Standards. . T 13, CCR, 1976 08/09/90 On-road

Transport Mitigation Regulations. . T 17, CCR, 70600-70601 08/09/90 Not applicable

Air Toxic Fee Schedule & Emissions Inventory Criteria and 

Guidelines. . T 17, & 26, CCR, 90700-90704, 93300-93347 09/13/90 Not applicable

California Reformulated Gasoline (CaRFG), Phase I. . T 13, CCR, 

2251.5 09/27/90 Fuels

Low Emission Vehicles and Clean Fuels. . T 13, CCR, 1900, 1904, 

1956.8, 1960.1, 1960.1.5, 1960.5 and 2111, 2112, 2125, and 

2139, 2061.

09/28/90 On-road

Identification of Trichloroethylene as a Toxic Air Contaminant. . 

T 17, & 26, CCR, 93000 10/11/90 Not applicable

Phase I - Consumer Products. . T 17, CCR, 94507-94517 10/11/90 Consumer products

Controls for Abrasive Blasting. . T 17, CCR, 92000, 92200, 92400, 

98500, 98510, 92520, 92530 11/08/90 Not applicable

Heavy Duty Diesel Smoke Emission Testing. . T 13, CCR, 2180-

2187 11/08/90 On-road
22

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Revision to Designation Criteria. . T 17, CCR, 60200-60204, 

60208 11/08/90 Not applicable

Identification of Vinyl Chloride as a Toxic Air Contaminant. . T 

17, & 26, CCR, 93000 11/13/90 Not applicable

Conflict of Interest Code. . T 17, CCR, 95001, et. seq. 12/13/90 Not applicable

Emission Standards for Utility and Lawn and Garden Engines. . T 

17, CCR, 2400 et. seq. 12/13/90 Off-road

Identification of Chloroform as a Toxic Air Contaminant. . T 17, 

& 26, CCR, 93000 12/13/90 Not applicable

Limit on Aromatic Content of Diesel Fuel. . T 13, CCR, 2256 12/13/90 Fuels

Permit Fee Regulations for Non-vehicular Sources. . T 17, CCR, 

90800.2, 90801, 90803 02/24/91 Not applicable

Acid Deposition Fee Regulations. . T 17, CCR, 90621.2, 90620, 

90622 04/11/91 Not applicable

Non -Vehicular Test Methods. . T 17, CCR, 94131, 94132, 94142 04/11/91 Not applicable

Administrative Hearing Procedures. . T 17, CCR, 60075.1, 

60075.47 05/09/91 Not applicable

Air Toxics "Hot Spots" Fee Regulation. . T 17, & 26, CCR, 90700 -

90705 06/13/91 Not applicable

Agricultural Burning Guidelines. T 17, 80130, 80150, 80250, 

80260, 80290 07/11/91 Not applicable

Identification of Metallic & Inorganic Nickel Compounds as a 

Toxic Air Contaminant. T 17, & 26, 93000 08/08/91 Not applicable

Onboard Diagnostics for Light-Duty Trucks and Light & MediumDuty Motor Vehicles. T 13, CCR, 1977, 1968.1 09/12/91 On-road

Identification of Perchloroethylene as a Toxic Air Contaminant. 

T 17, & 26, CCR, 93000 10/10/91 Not applicable

State Ambient Air Quality Standard for SO2. T 17, CCR, 70100, 

70200, 70201 10/10/91 Not applicable

Onboard Diagnostic, Phase II. T 13, CCR, 1968.1, 1977 11/12/91 On-road

Area Designations. T 17, CCR, 60200, 60209 11/14/91 Not applicable

Low Emission Vehicles amendments revising reactivity 

adjustment factor (RAF) provisions and adopting a RAF for M85 

transitional low emission vehicles. T 13, CCR, 1960.1

11/14/91 On-road
23

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

California Reformulated Gasoline, Phase II. T 13, CCR, 2250, 

2255.1, 2252, 2260 - 2272, 2295 11/21/91 Fuels

Wintertime Gasoline Program. T 13, CCR, 2258, 2298, 2251.5, 

2296 11/21/91 Fuels

Specifications for Alternative Motor Vehicle Fuel. T 13, & 26, 

CCR, 2290, 2291, 2292.1, 2292.2, 2292.3, 2292.5, 2292.6, 2292.7, 

1960.1(k), 1956.8(b), 1956.8(d)

12/12/91 Fuels

Heavy Duty Diesel Cycle Engines. T 13, CCR, 2420-2427 01/09/92 Off-road

Phase II - Consumer Products. T 17, CCR, 94501, 94502, 94505, 

94514, 94503.5, 94506, 94507 - 94513, 94515 01/09/92 Consumer products

Identification of Formaldehyde as a Toxic Air Contaminant. T 

17, & 26, CCR, 93000 03/12/92 Not applicable

Specifications for Alternative Motor Vehicle Fuels. T 13, & 26, 

CCR, 2290-2292.7, 1960.1(k), 1956.8(b), 1956.8(d) 03/12/92 On-road

Atmospheric Acidity Protection Fees. T 17, CCR, 90621.3 04/09/92 Not applicable

Permit Fee Regulations for Non-vehicular Sources. T 17, CCR, 

90800.3, 90803 04/09/92 Not applicable

Criteria for Area Designations. T 17, CCR, 70303, 70304 05/14/92 Not applicable

Standards and Test Procedures for Alternative Fuel Retrofit 

Systems. T 13, CCR, 2030, 2031 05/14/92 On-road

Transported Air Pollutants. T 17, CCR, 70500 05/28/92 Not applicable

Air Toxics "Hot Spots" Fee Regulation. T 17, & 26, CCR, 90701, 

90704, 90705 07/09/92 Not applicable

Identification of 1.3 Butadiene as a Toxic Air Contaminant. T 17, 

& 26, CCR, 93000 07/09/92 Not applicable

Phase 2 RFG certification fuel specifications. T 13, CCR, 1960.1, 

1956.8(d) 08/13/92 On-road

CFC Refrigerants in Air Conditioning Systems. T 13, CCR, 2500 09/10/92 Not applicable

Substitute Fuel or Clean Fuel Incorporated Test Procedures. T 

13, CCR, 1960.1(k), 2317 11/12/92 On-road

Notice of General Public Interest for Consumer Products. T 17, 

CCR, 94507 - 94517 11/30/92 Consumer products

Airborne Toxic Control Measure for Emission of Toxic Metals 

from Non-Ferrous Metal Melting. T 17, & 26, CCR, 93107 12/10/92 Not applicable
24

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Criteria for Area Designations. T 17, CCR, 70303.5, 60200-

60203, 60205, 70303 12/10/92 Not applicable

Smoke Self Inspection Program for Heavy Duty Diesel & 

Gasoline Engines. T 13, CCR, 2190-2194, 2180-2187, 1956.8(b) 12/10/92 On-road

Certification Requirements for Low Emission Passenger Cars, 

Light-Duty Trucks & Medium Duty Vehicles. T 13, CCR, 1960.1, 

1976, 2061, 1900

01/14/93 On-road

Transport Mitigation Regulations. T 17, CCR, 70600, 70601 03/11/93 Not applicable

1-year Implementation Delay in Emission Standards for Utility 

Engines. T 13, CCR, 2400, 2403-2407 04/08/93 Off-road

Acid Deposition Fee Regulations. T 17, CCR, 90622, 90621.4 04/08/93 Not applicable

Identification of Federal Hazardous Air Pollutants as Toxic Air 

Contaminants. T 17, & 26, CCR, 93001, 39665, 39666 04/08/93 Not applicable

Permit Fee Regulations for Non-vehicular Sources. T 17, CCR, 

90800.4, 90803 04/08/93 Not applicable

Air Toxics "Hot Spots" Emissions Inventory Criteria and 

Guidelines. T 17, & 26, CCR, 93300-93347 06/10/93 Not applicable

Urban Transit Buses. T 13, CCR, 1956.8, 1965, 2112 06/10/93 On-road

Air Toxics "Hot Spots" Fee Regulation. T 17, & 26, CCR, 90700-

90705 07/08/93 Not applicable

Onboard Diagnostic, Phase II. T 13, CCR, 1968.1 07/09/93 On-road

Mitigation Transport Pollutants. T 17, CCR, 70500, 70600 08/12/93 Not applicable

Wintertime Oxygenate Program. T 13, CCR, 2258, 2251.5, 

2263(b), 2267, 2298, 2259, 2283, 2293.5 09/09/93 Fuels

Airborne Toxic Control Measure for Perchloroethylene Dry 

Cleaning. T 17, & 26, CCR, 93109, 93110 10/14/93 Not applicable

Diesel Fuel Regulations - Emergency. T 13, CCR, 2281(h), 

2282(1) 10/15/93 Fuels

Conflict of Interest. T 17, CCR, 90500 11/18/93 Not applicable

Criteria for Area Designations. T 17, CCR, 60200-60202, 60204, 

60206, 60208, 70300-70306 11/18/93 Not applicable
25

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Off-Highway Recreational Vehicles. T 13, CCR, 2410-2414, 2111-

2140 01/03/94 Off-road

Evaporative Emission Standards and Test Procedures. T 13, CCR, 

1976 02/10/94 On-road

SCAQMD's RECLAIM Consideration 03/10/94 Stationary Sources

Permit Fee Regulations for Non-vehicular Sources. T 17, CCR, 

90800.5, 90803 04/14/94 Not applicable

Predictive Model for Phase II CaRFG. T 13, CCR, 2261, 2262-

2270 06/09/94 Fuels

Small Refiner Diesel. T 13, CCR, 2282(e)(1) 07/24/94 Fuels

Air Toxics "Hot Spots" Fee Regulation. T 17, & 26, CCR, 90700-

90705 07/28/94 Not applicable

Utility and Lawn and Garden Equipment Engines. T 13, CCR, 

2403(c), 11(a)(1)(I)(ii), 4(a)(1)(I)(ii) 07/28/94 Off-road

Alternative Control Plan for Consumer Products. T 17, CCR, 

94540-94555 09/22/94 Consumer products

Diesel Fuel Certification. T 13, CCR, 1956.8(b)&(d), 1960.1(k), 

2292.6 09/22/94 Fuels

Area Designations. T 17, CCR, 60201, 60204 11/09/94 Not applicable

Self Inspection Program for Heavy Duty Diesel & Gasoline 

Engines. T 13, CCR, 2190-2194, 2180-2187, 1956.8(b) 11/09/94 On-road

Onboard Diagnostics, Phase II. T 13, CCR,1963.1, & Certification 

Procedures 12/08/94 On-road

Periodic Smoke Inspection Program. T 13, CCR, 2190 12/08/94 On-road

Specification for Alternative Motor Vehicle Fuels (M100). T 13 

CCR, 2292.1 12/08/94 Fuels

Aerosol Coating Products and Alternative Control Plan. T 17, 

CCR, 94520-94528, 94540-94543, 94547... 03/23/95 Consumer products

Permit Fee Regulations for Non-vehicular Sources. T 17, CCR, 

90800.6, 90803 04/27/95 Not applicable

Employee-Based Trip Reductions Emission Formula. T 13, CCR, 

2330, 2331, 2332 06/29/95 Not applicable

Gasoline Vapor Recovery Systems. T 17, CCR, 94010-94015, 

94150-94160, 94000-94004, 94007. 06/29/95 Vapor Recovery
26

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Heavy Duty Vehicle Exhaust Emission Standards. T 13, CCR, 

1956.8 and incorporate test procedures. 06/29/95 On-road

Onboard Refueling Vapor Recovery Standards. T 13, CCR, 1976, 

1978 and incorporate test procedures 06/29/95 On-road

Test Method for Oxygen in Gasoline. T 13, CCR, 2251.5(c), 

2258(c), 2263(b) 06/29/95 Fuels

Retrofit Emission Standards. T 13, CCR, 1956.9, 2030, 2031, and 

incorporate test procedures 07/27/95 On-road

Antiperspirants and Deodorants, Consumer Products, and 

Aerosol Coating Products. T 17, CCR, 94500-94506, 94508, 

94521

09/28/95 Consumer products

Low Emission Vehicle Standards 3 (LEV 3). T 13, CCR, 1956.8, 

1960.1, 1965, 2101, 2061, 2062, and incorporate test 

procedures

09/28/95 On-road

Test Methods for CaRFG 13, CCR, 2263(b) 10/26/95 Fuels

Required Additives in Gasoline (Deposit Control Additives). T 

13, CCR, 2257 and incorporates testing procedures. 11/16/95 Fuels

CaRFG Housekeeping & CARBOB. T 13, CCR, 2263.7, 2266.5, 

2260, 2262.5, 2264, 2265, 2272 12/14/95 Fuels

Exemption of Military Tactical Vehicles. T 13, CCR, 1905, 2400, 

2420 12/14/95 On Road/Off Road

Air Toxics "Hot Spots" Fee Regulation. T 17, CCR, 90700-90705 

and Appendix A 01/25/96 Not applicable

CaRFG Variance Requirements. T 13, CCR, 2271 (Emergency) 01/25/96 Fuels

Relaxation of Carbon Monoxide Emission Standards for Utility 

Engines. T 13, CCR, 2403 and incorporating test procedures 01/25/96 Off-road

Postpone Zero Emission Vehicle Requirements. T 13, CCR, 1900, 

1960.1, 1976 03/28/96 On-road

Permit Fee Regulations for Non-vehicular Sources. T 17, CCR, 

90803, 90800.7 04/25/96 Not applicable

Basin Boundaries for Agricultural Burning (Mojave Desert, 

South Coast & Salton Sea). T 17, CCR, 60104, 60109, 60114, 

80280, 80311

05/30/96 Not applicable

Regulation Improvement and Repeal. T 17, CCR, 93301-93355, 

Appendix A-E (emissions inventory) 05/30/96 Not applicable

Regulation Improvements and Repeals (fuel additives). T 13, 

CCR, 2201, 2202 05/30/96 Fuels
27

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Emissions Inventory Criteria & Guideline Report. T 17, CCR, 

93300.5 07/25/96 Not applicable

Air Toxics "Hot Spots" Fee Regulation. T 17, CCR, 90701-90705 

Appendix A to §§ 90700-90705 09/26/96 Not applicable

Stationary Source Test Methods. T 17, CCR, 94105, 94107, 

94114, 94135, 94141, 94143, 94161 09/26/96 Not applicable

Wintertime Requirements for Utility Engines & Off-Highway 

Vehicles. T 13, CCR, 2403 09/26/96 Off-road

Diesel Fuel Certification Test Methods . T 13, CCR, 1956.8(b), 

1960.1(k), 2281(c), 2282(b), (c) and (g) 10/24/96 Fuels

Diesel Fuel Test Methods. T 13, CCR, 1956.8(b), 1960.1(k), 

2281(c), 2282(b), (c) and (g) 10/24/96 Fuels

Antiperspirants and Deodorants, Consumer Products, Aerosol 

Coating Products (ARB Test Method 310). T 17, CCR, 94506(a), 

94515(a), 94526

11/21/96 Consumer products

Area Designations. T 17, CCR, 60201-60209 11/21/96 Not applicable

Consumer Products and Aerosol Coating Products 

Amendments. T 17, CCR, 94508-94515, 99517, 94321 11/21/96 Consumer products

Transport Pollutants. T 17, CCR, 70500, 70600 11/21/96 Not applicable

Onboard Diagnostics, Phase II, Technical Status. T 13, CCR, 

1968.1, 2030, 2031 12/12/96 On-road

Consumer Products (Hair Spray) Amendments. T 17, CCR, 

94509, 94513, 94514 03/27/97 Consumer products

Liquefied Petroleum Gas Propane Limit Specification Delay. T 

13, CCR, 2292.6 03/27/97 Fuels

Portable Equipment Registration Program. T 13, CCR, 2450-

2465 03/27/97 Off-road

Identification of Inorganic Lead as Toxic Air Contaminant (TAC). 

T 17, CCR, 93000 04/24/97 Not applicable

Interchangeable Emissions Reduction Credits. T 17, CCR, 91500 05/22/97 Not applicable

Postpone Enhanced Evaporative Emission Requirements for 

Ultra-Small Volume Vehicle Manufacturers. T 13, CCR, 1976 and 

incorporate test procedures

05/22/97 On-road

Consumer Products (Mid-Term Measures) Amendments. T 17, 

CCR, 94508, 94509, 94513 07/24/97 Consumer products

Off-Cycle Emissions Supplemental Federal Test Procedures 

(SFTPs). T 13, CCR, 1960.1, 2101 and incorporate test 

procedures

07/24/97 On-road
28

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Air Toxics "Hot Spots" Fee Regulation. T 17, CCR 90701-90705 

and Appendix A 11/13/97 Not applicable

Area Designations. T 17, CCR, 60201 & 60205 11/13/97 Not applicable

Consumer Products (Hairspray Credit Program). T 17, CCR, 

94502, 94509, 94522, & 94548 11/13/97 Consumer products

Heavy Duty Vehicle Smoke Inspection Program/Periodic Smoke 

Inspection Program. T 13, CCR, 2180-2188 and 2190-2194 12/11/97 On-road

Permit Fee Regulations for Non-vehicular Sources. T 17,CCR 

90800.... 01/29/98 Not applicable

Small Off-Road Engines (SORE). T 13, CCR, 2400,2410-2414 03/26/98 Off-road

Classifying Minor Violations. T 17, CCR, 60090-60095 04/23/98 Not applicable

Heavy Duty Vehicle Regulations: 2004 Standards. T 13, CCR, 

1956.8, 1965, 2036, 2112 and test procedures 04/23/98 On-road

Airborne Toxic Control Measure for Chrome Plating. T 17, CCR, 

93102 05/21/98 Not applicable

Cleaner Burning Gasoline Model Flexibility. T 13, CCR, Sections 

2260, 2262.1, 2262.3, 2262.4, 2262.5, 2262.6, 2262.7 and 2265 08/27/98 Fuels

Gasoline Vapor Recovery Systems. T 17, CCR, 94010-94015 and 

94150, 94156, 94157, 94158, 94159, 94160, 94162 08/27/98 Vapor Recovery

Identification of Diesel Exhaust as a Toxic Air Contaminant. T 

17, CCR, 93000 08/27/98 Not applicable

Gasoline Deposit Control Additive Regulation. T 13, CCR, 2257, 

and incorporating test procedures 09/24/98 Fuels

Air Toxics “Hot Spots” Fee Regulations. T 17, CCR, 90701-90705 

and Appendix A 10/22/98 Not applicable

Area Designations and Criteria for the National and State 

Ambient Air Quality Standards for Ozone. T 17, CCR, 60301, 

60202, 60205, 60206, 70300-70306, 70303.1

10/22/98 Not applicable

Large Off-Road Spark-Ignition Engine Regulations. T 13, CCR, 

2430 et seq., and 2411-2414 10/22/98 Off-road

Stationary Source Test Methods. T 17, CCR, 94101 - 94104, 

94106, 94108 - 94113, 941T 17 - 94124, 94137 and revision of 

Method 12.

10/22/98 Not applicable
29

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Low Emission Vehicles Standards (LEV 2) and Compliance 

Assurance Program (CAP 2000). T 13, CCR,1961 & 1962 (both 

new); 1900, 1960.1, 1965, 1968.1, 1976, 1978, 2037, 2038, 

2062, 2101, 2106, 2107, 2110, 2112, 2114, 2119, 2130, 2137-

2140, 2143-2148

11/05/98 On-road

Aftermarket Parts for Off-Road Engines. T 13, CCR, 2470-2476 11/19/98 Off-road

Consumer Products - LVP-VOC Definitions And Test Methods. T 

17, CCR, 94506, 94506.5, 94508(a)(78), 94515 and 94526, and 

the amendment of ARB Method 310

11/19/98 Consumer products

Consumer Products, Aerosol Coatings & Antiperspirants and 

Deodorants. T 17, CCR, 94501, 94508, 94521, 94522, and 94524 11/19/98 Consumer products

1997 & Later Model Off-Highway Recreational Vehicles and 

Engines. T 13, CCR, 2410-2414, 2415

12/10/98 Off-road

Emission Standards and Test Procedures for 2001 Marine 

Engines. T 13, CCR, 2440 et seq 12/10/98 Off-road

Exhaust Standards for (On-Road) Motorcycles. T 13, CCR, 1958 12/10/98 On-road

Revisions to Statewide Portable Equipment Registration 

Program. T 13, CCR, 2450-2463 12/10/98 Off-road

Voluntary Accelerated Light Duty Vehicle Retirement 

Regulations. T 13, CCR, 2600-2610 12/10/98 On-road

Cleaner Burning Gasoline (Increasing the Oxygen Content). T 13, 

CCR, sections 2262.5(b) and 2265(a)(2) 12/11/98 Fuels

Specifications for Liquid Petroleum Gas Used as a Motor Vehicle 

Fuel. T 13, CCR, 2292.6 12/11/98 Fuels

Cleaner Burning Gasoline, Oxygen Requirement for Wintertime 

In Lake Tahoe Area/Gas Pump Labeling for MTBE. T 13, CCR, 

2262.5, and 2273

06/24/99 Fuels

Gasoline Vapor Recovery Systems. T 17, CCR, 94011, 94153, 

94155, and incorporated test procedures, CP-201, TP- 201.4, 

and TP-201.6

06/24/99 Vapor Recovery

Clean Fuels Regulation Requirements. T 13, CCR, sections 2300-

2317, and 2303.5, 2311.5 07/22/99 On-road

Portable Container Spillage Control Measure. T 13, CCR, 2470-

2478 09/23/99 Off-road

Administrative Hearing Procedures. T 17, CCR, 60040 and 

60075.1-60075.45 10/22/99 Not applicable

California Consumer Products Regulation Mid-Term Measures 

II. T 17, CCR, 94508, 94509, and 94513 10/28/99 Consumer products
30

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Area Designations for State Ambient Air Quality Standards. T 

17, CCR, 60201 11/18/99 Not applicable

CaRFG Phase 3 Amendments (Phase out of MTBE, standards, 

predictive model). T 13, CCR, 2260, 2261, 2262.1, 2262.5, 2263, 

2264, 2264.2, 2265, 2266 etc...

12/09/99 Fuels

Off-Road Compression Ignition Engines. T 13, CCR, 2111, 2112, 

2137, 2139, 2140, 2141, 2144, 2400, 2401, 2403, 2420, 2421, 

2423-2427, & appendix A to article 2.1.

01/27/00 Off-road

Transit Bus Standards. T 13, CCR, 1956.1, 1956.2, 1956.3, 

1956.4, 1956.8, 1965 02/24/00 On-road

Agricultural Burning Guidelines. T 17 Amendments 80145, 80T 

179, 80100-80102, 80110, 80120, 80130, 80140, 80150, 80155, 

80160, 80T 170, 80180, 80200, 80210, 80230, 80240, 80250, 

80260, 80270, 80280, 80290, 80300, 80310, 80311, 80320, 

80330

03/23/00 Not applicable

Enhanced Gasoline Vapor Recovery Systems (Emergency Filing 

CP-201, section 18). T 17, CCR, 94011 03/23/00 Vapor Recovery

Enhanced Gasoline Vapor Recovery Systems (In Station 

Diagnostics and Onboard Refueling Vapor Recovery). T 17, CCR, 

94011

03/23/00 Vapor Recovery

Air Toxic Control Measure for Chlorinated Toxic Air 

Contaminants from Automotive Maintenance and Repair 

Facilities. T 17, CCR, 93111

04/27/00 Other

Consumer Products Aerosol Adhesives Control Measure. T 17, 

CCR, 94508, 94509, 94512, 94513 05/25/00 Consumer products

Aerosol (Paint) Coatings Products. T 17, CCR, 94700, 94701, 

94521-94524, 94526 06/22/00 Consumer products

Air Toxic Control Measure for Asbestos Containing Serpentine. 

T 17, CCR, 93106 07/20/00 Not applicable

Conflict of Interest Code. T 17, CCR, 95001, 95002, 95005, and 

subchapter 9 09/28/00 Not applicable

Rice Straw Conditional Burn Permit Program. T 17, CCR, 80101, 

80156-80158 09/28/00 Not applicable

Air Toxics "Hot Spots" Fee Regulations. T 17, CCR, 90705 tables 

1, 2, 3a, 3b, 3c, and 4 10/26/00 Not applicable

Antiperspirant and Deodorant Regulations. T 17, CCR, 94502, 

94504 10/26/00 Consumer products

Area Designations for the State Ambient Air Quality Standard 

for Ozone. T 17, CCR, 60201 11/16/00 Not applicable
31

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

CaRFG Phase 3 Follow-up Amendments. T 13, CCR, sections 

2260, 2261, 2262.3, 2262.5, 2263, 2264, 2265, 2266, 2266.5, 

2270, 2272, 2273, 2282, 2296, 2297, 2262.9 and incorporated 

test procedures

11/16/00 Fuels

CaRFG Phase 3 Test Methods. T 13, CCR, sections 2263(b) 11/16/00 Fuels

Heavy Duty Diesel Engines "Not-to-Exceed" Test Procedures. T 

13 CCR, 1956.8, 2065 12/07/00 On-road

Light-and Medium Duty Low Emission Vehicle Alignment with 

Federal Standards. Exhaust Emission Standards for Heavy Duty 

Gas Engines. T 13, CCR, 1956.8 &1961

12/07/00 On-road

Zero Emission Vehicle Regulation Update. T 13, CCR, 1900, 

1960.1(k), 1961, 1962 & incorporated Test Procedure

01/25/01 On-road

Ozone Transport Assessment. T 17, CCR, 70500 & 70600 04/26/01 Not applicable

Zero Emission Vehicle Infrastructure and Standardization of 

Electric Vehicle Charging Equipment. T 13, CCR, 1900(b), 

1962(b) 1962.1 

06/28/01 On-road

Airborne Toxic Control Measure for Asbestos from 

Construction, Grading, Quarrying, and Surface Mining. T 17, 

CCR, 93105

07/26/01 Not applicable

Marine Inboard Engines. T 13, CCR, 2111, 2112, 2139, 2140, 

2147, 2440-2442, 2443.1-2443.3, 2444, 2445.1, 2445.2, 2446, 

2444.2 and incorporation of documents by reference

07/26/01 Off-road

Air Toxic Control Measures for Auto and Mobile Equip 

Refinishing Coatings containing Hexavalent Chromium and 

Cadmium Compounds. T 17, CCR, 93112

09/20/01 Not applicable

Air Toxics "Hot Spots" Fee Regulation. T 17, CCR, 90700-90705 10/25/01 Not applicable

Gasoline Vapor Recovery Systems Test Methods and 

Compliance Procedures. T 17, CCR, 94010, 94011, 94153, 

94155, 94163, 94164, 94165 & incorporated procedures

10/25/01 Vapor Recovery

Heavy Duty Diesel Engine Standards for 2007 and Later. T 13, 

CCR, 1956.8 and incorporated test procedures 10/25/01 On-road

Distributed Generation Guidelines and Regulations. T 17, CCR, 

94200-94214 11/15/01 Other

Gasoline Vapor Recovery Systems Defects. T 17, CCR, 94006 

and incorporated document. 11/15/01 Vapor Recovery
32

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Low Emission Vehicle Regulations. T 13, CCR, 1960.1,1960.5, 

1961, 1962 and incorporate test procedures and guidelines 11/15/01 On-road

California Motor Vehicle Service Information Rule. T 13&17, 

CCR, 1969 & 60060.1 - 60060.7 12/13/01 On-road

Airborne Toxic Control Measure for Outdoor Residential Waste 

Burning. T 17, CCR, 93113 02/21/02 Other

Voluntary Accelerated Light Duty Vehicle Retirement 

Regulations. T 13, CCR, 2601-2605, 2606 & appendices C & D, 

and 2607-2610

02/21/02 On-road

On-Board Diagnostic II Review Amendments. T 13, CCR, 1968.1, 

1968.2, 1968.5 04/25/02 On-road

Diesel Retrofit Verification Procedure, Warranty and In-Use 

Compliance Requirements. T 13, CCR, 2700-2710 05/16/02 On-road

Review of California Ambient Air Quality Standards for 

Particulate Matter and Sulfates. T 17, CCR, 70100,70200, and 

70100.1

06/20/02 Not applicable

CaRFG Phase 3 Amendments. T 13, CCR, 2261, 2262, 2262.4, 

2262.5, 2262.6, 2262.9, 2266.5, 2269, 2271, 2272, 2265, and 

2296

07/25/02 Fuels

Revision to Transit Bus Regulations Amendments. T 13, CCR, 

1956.1, 1956.2, 1956.4,1956.8, and 2112, & documents 

incorporated by reference

10/24/02 On-road

Administrative Civil Penalties Program. T 17, CCR, 60065.1 -

60065.45 and 60075.1 - 60075.45 12/12/02 Not applicable

Airborne Toxic Control Measure for Diesel Particulate from 

School Bus Idling. T13, CCR, 2480 12/12/02 On-road

CaRFG Phase 3 Amendments (specifications for De Minimis 

Levels of Oxygenates and MTBE Phase Out Issues). T 13, CCR, 

2261, 2262.6, 2263, 2266.5, 2272, 2273, 2260, 2273.5

12/12/02 Fuels

Gasoline Vapor Recovery Systems Test Procedures. T 17, CCR, 

94010, 94011, 94163, 94164, and 94165 and procedures 

incorporated by reference, and 94166, 94167, and 

incorporation by reference.

12/12/02 Vapor Recovery

Low Emission Vehicles II. Align Heavy Duty Gas Engine 

Standards with Federal Standards; minor administrative 

changes. T 13, CCR, 1961, 1965, 1956.8, 1956.1, 1978, 2065 and 

documents incorporated by reference

12/12/02 On-road
33

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Zero Emission Vehicle Amendments for 2003. T 13, CCR, 

1960.1(k), 1961(a) and (d), 1900, 1962, and documents 

incorporated by reference

03/25/03 On-road

Ozone Transport Mitigation Regulations. T 17, CCR, 70600 and 

70601 05/22/03 Not applicable

Off-Highway Recreation Vehicles. T13, CCR, 2415 07/24/03 Off-road

Permit Fee Regulations for Non-vehicular Sources. T 17, CCR, 

90800.75, 90800.9, 90804, 90800.8, 90801, 90802, and 90803 07/24/03 Not applicable

Specifications for Motor Vehicle Diesel Fuel. T 13 & T 17, CCR, 

1961, 2281, 2282, 2701, 2284, 2285, 93114, and incorporated 

test procedure

07/24/03 Fuels

Solid Waste Collection Vehicles. T 13, CCR, 2020, 2021, 2021.1, 

2021.2 09/24/03 On-road

Small Off-Road Engines (SORE). T 13, CCR, 2400-2409, 2405.1, 

2405.2, 2405.3, 2750-2754, 2754.1, 2754.2, 2755-2767, 2767.1, 

2768-2773 and the documents incorporated by reference

09/25/03 Off-road

Revised Tables of Maximum Incremental Reactivity Values. T 1, 

CCR, 94700. 12/03/03 Consumer products

Airborne Toxic Control Measure for Diesel Particulate for 

Transport Refrigeration Units. T 13, CCR, 2022 & 2477 12/11/03 Off-road

Airborne Toxic Control Measure for Stationary Compression 

Ignition Engines. T 17, CCR 93115 & documents incorporate by 

reference

12/11/03 Other

Diesel Retrofit Verification Procedure, Warranty and In-Use 

Compliance Requirements (Amendments). T 13, CCR, 2701-

2707 & 2709 

12/11/03 On-road

Area Designation Criteria and Area Designations for State PM2.5

and Ozone Ambient Air Quality Standards. T 17, CCR, 60201, 

60202, 60205, 60210

01/22/04 Not applicable

CA Motor Vehicle Service Information Rule. T 13, CCR, 1969 01/22/04 On-road

Airborne Toxic Control Measure for Diesel-Fueled Portable 

Engines. T 17, CCR,93116, 93116.1, 93116.2, 93116.3, 93116.4, 

and 93116.5

02/26/04 Off-road

Modifications to the Statewide Portable Equipment 

Registration Program (PERP) Regulations . T 13, CCR 

Amendments to 2450-2465, and repeal of 2466

02/26/04 Off-road
34

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Heavy Duty Diesel Engine-Chip Reflash. T 13, CCR, 2011, 2180.1, 

2181, 2184, 2185, 2186, 2192, and 2194 03/27/04 On-road

Engine Manufacturer Diagnostic System Requirements for 2007 

and Subsequent Model Heavy Duty Engines. T 13, CCR, 1971 05/20/04 On-road

Consumer Products & Methods 310/ATCM for ParaDicholorobenzene. T 17, CCR, 94501, 94506, 94507, 94508, 

94509, 94510, 94512, 94513, 94515, and 94526, and ARB 

Method 310, which is incorporated by reference 

06/24/04 Consumer products

Urban Bus Engines/Fleet Rule for Transit Agencies. T 13, CCR, 

1956.1, 1956.2, 1956.3, and 1956.4, 06/24/04 On-road

Airborne Toxic Control Measure for Diesel Particulate from 

Diesel Fueled Commercial Vehicle Idling. T 13, CCR, 2485 07/22/04 On-road

Gasoline Vapor Recovery Systems at Dispensing Facilities. 

Emergency Filing. T 17, CCR, 94011 07/22/04 Vapor Recovery

Unihose Gasoline Vapor Recovery Systems. T17, CCR, 94011 07/22/04 Vapor Recovery

Gasoline Vapor Recovery System Equipment Defects List. T 17, 

CCR, 94006(b) & incorporated document 08/24/04 Vapor Recovery

Greenhouse Gas. T 13, CCR, 1961.1, 1900, 1961 and 

Incorporated Test Procedures 09/23/04 On-road

California Reformulated Gasoline, Phase 3. T 13, CCR, 2260, 

2262, 2262.4, 2262.5, 2262.6, 2262.9, 2263, 2265 (and the 

incorporated “California Procedures”), and 2266.5 

11/18/04 Fuels

Diesel Fuel Standards for Harbor Craft & Locomotives. T 13, 

CCR, 2299, 2281, 2282, and 2284, and T 17, CCR, 93117 11/18/04 Fuels

Enhanced Gasoline Vapor Recovery Systems Extension. T 17, 

CCR, 94011 and certification procedure 11/18/04 Vapor Recovery

Permit Fee Regulations for Non-vehicular Sources. T17, CCR 

90805 and 90806; and 90800.8 and 90803 11/18/04 Not applicable

Emergency Regulation for Temporary Delay of Diesel Fuel 

Lubricity Standard. T 13, CCR, 2284 11/24/04 Fuels
35

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Airborne Toxic Control Measure for Hexavalent Chromium and 

Nickel from Thermal Spraying. T 17, CCR, 93102.5

12/09/04 Not applicable

Off-Road Compression Ignition Engines. T 13, CCR, 2420, 2421, 

2423, 2424, 2425, 2427 12/09/04 Off-road

Area Designations. T 17, CCR, 60201, 60202, 60205, 60210 01/20/05 Not applicable

Transit Fleet Rule. T 13, CCR, 2023, 2023.1, 2023.2, 2023.3, 

2023.4, 1956.1, 2020, 2021, repeal 1956.2, 1956.3, 1956.4 02/24/05 On-road

State Ambient Air Quality Standard for Ozone. T 17, CCR, 

70100, 70100.1, and 70200 04/28/05 Not applicable

Airborne Toxic Control Measure for Stationary Compression 

Ignition Engines (amendments). T 17, CCR, 93115 05/26/05 Other

Definition of Large Confined Animal Facility. T 17, CCR 86500 

and 86501 06/23/05 Not applicable

On-Board Diagnostic System Requirements for 2010 and 

Subsequent Model-Year Heavy-Duty Engines (HD OBD). T 13, 

CCR, 1971.1

07/21/05 On-road

Reid Vapor Pressure Limit. Emergency Rule. T 13, CCR, 2262 and 

2262.4 08/08/05 Fuels

2007-2009 Model-Year Heavy Duty Urban Bus Engines and the 

Fleet Rule for Transit Agencies. T 13, CCR, 1956.1, 1956.2, and 

1956.8

09/15/05 On-road

Portable Fuel Containers (PFC) [Part 2 of 2]. T 13, CCR 2467.2, 

2467.3, 2467.4, 2467.5, 2467.6, 2467.7; repeal of 2467.8, and 

adoption of new 2467.8 and 2467.9. 

09/15/05 Off road

Portable Fuel Containers (PFC) [Part 1 of 2]. T 13, CCR, 2467 and 

2467.1 09/15/05 Off road

Requirements to Reduce Idling Emissions from New and In-Use 

Trucks, Beginning in 2008. T 13, CCR section1956.8 and the 

incorporated document

10/20/05 On-road

Airborne Toxic Control Measure for Cruise Ships Onboard 

Incineration. T 17, CCR, 93119 11/17/05 Off road

Marine Inboard Sterndrive Engines. T 13 CCR 2111, 2112, 2441, 

2442, 2444.2, 2445.1, 2446, 2447, and incorporated document 11/17/05 Off-road

Auxiliary Diesel Engines and Diesel-Electric Engines Operated on 

Ocean-Going Vessels within California Waters and 24 Nautical 

Miles of the California Baseline. T 13, CCR, 2299.1 and T 17, 

CCR, 93118

12/08/05 Off-road
36

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Diesel Particulate Matter Control Measure for On-Road HeavyDuty Diesel-Fueled Vehicles Owned or Operated by Public 

Agencies and Utilities. T 13, CCR, 2022 and 2022.1

12/08/05 On-road

Mobile Cargo Handling Equipment at Ports and Intermodal Rail 

Yards. T 13, CCR, 2479 12/08/05 On and Off-road

AB1009 Heavy-Duty Vehicle Smoke Inspection Program. T 13, 

CCR, 2180, 2180.1, 2181, 2182, 2183, 2184, 2185, 2186, 2187, 

and 2188, 2189

01/26/06 On-road

Identification of Tobacco Smoke as a Toxic Air Contaminant. T

17, CCR, 93000 01/26/06 Not applicable

Diesel Verification Procedure, Warranty & In-Use. T 13, CCR, 

2702, 2703, 2704, 2706, 2707, and 2709. 03/23/06 On-road

Technical Amendments to Evaporative Exhaust and Evaporative 

Emissions Test Procedures. T 13, CCR, 1961,1976 and 1978. 05/25/06 On-road

Fork Lifts and Other Industrial Equipment. (Large Off-Road 

Spark Ignition Engines > 1 liter) T 13, CCR 2430, 2433, 2434. 

Adopt 2775, 2775.1, 2775.2, 2780, 2781, 2783, 2784, 2785, 

2786, 2787, 2788, and 2789.

05/26/06 Off-road

California Motor Vehicle Service Information Rule. T 13, CCR, 

1969 and incorporated documents 06/22/06 On-road

Evaporative and Exhaust Emissions Test Procedures. T13, CCR, 

1961, 1976, 1978 06/22/06 On-road

Gasoline Vapor Recovery Systems. T 17 CCR 94011 and 

incorporated certification 06/22/06 Vapor Recovery

Portable Equipment Registration Program. T 13, CCR, 2450, 

2451, 2452, 2453, 2454, 2455, 2456, 2457, 2458, 2459, 2460, 

2461, 2462, 2463, 2464, and 2465

06/22/06 Off-road

Off-Highway Recreational Vehicles and Engines. T 13, CCR, 

2411-2413, 2415 & documents incorporated by reference 07/20/06 Off-road

Heavy-Duty In-Use Compliance Regulation. T 13, CCR, 1956.1, 

1956.8, and documents incorporated by reference 09/28/06 On-road

On-Board Diagnostic II. T 13, CCR, 1968.2, 1968.5, 2035, 2037 

and 2038 09/28/06 On-road

Distributed Generation Guidelines and Regulations. T 17, CCR, 

94201, 94201.1, 94203, 94204, & 94207-942142 10/19/06 Other

Zero Emission Bus Regulation. T13, CCR, 2023.1, 2023.3, & 

2023.4 10/19/06 On-road
37

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Air Toxics "Hot Spots" Emissions Inventory Criteria and 

Guidelines. T 17, CCR, 93300.5 and document incorporated by 

reference

11/16/06 Not applicable

Airborne Toxic Control Measure for Cruise Ships and OceanGoing Ships Onboard Incineration (amendments). T 17, CCR, 

93119

11/16/06 Off-road

Airborne Toxic Control Measure for Stationary Compression 

Ignition Engines (amendments, Agricultural Eng. Exemption 

removal). T 17, CCR, 93115.1-93115.15.t.

11/16/06 Other

Area Designations for State Ambient Air Quality Standards. T 

17, CCR, 60201, 60202, 60205, & 60210 11/16/06 Not applicable

Consumer Products. T 17, CCR, 94508-94510, 94513 & 94523 11/17/06 Consumer products

Emergency Regulation for Portable Equipment Registration 

Program, Airborne Toxic Control Measures and Portable and 

Stationary diesel-Fueled Engines. T 13, CCR, 2452, 2455, 2456, 

2461; T17 CCR 93115, 93116.2, 93116.3

12/06/06 Off-road

Airborne Toxic Control Measure for Chrome Plating and 

Chromic Acid Anodizing Operations. T 17, CCR, 93102.1-

93102.16

12/07/06 Not applicable

Voluntary Accelerated Retirement Regulation. T 13, CCR, 2601-

2610 and appendices A-D

12/07/06 On-road

Perchloroethylene Dry Cleaning Operations 1/25/07 Not applicable

State Ambient Air Quality Standard for Nitrogen Dioxide 2/22/07 Not applicable

Portable Equipment Registration Program . 3/22/07 Off-road

Formaldehyde Emissions from Composite Wood Products 4/26/07 Not applicable

In-Use Off-Road Diesel Vehicles 5/24/07, 

7/26/07 Off-road

Phase 3 California Reformulated Gasoline Regulations

(Ethanol Permeation) 06/14/07 Fuels

Smog Index Labels Regulations 6/21/07 Not applicable

Vapor Recovery Aboveground Storage Tanks 6/21/07 Vapor recovery

Indoor Air Cleaning Devices 9/27/07 Not applicable

Aftermarket (New) Catalytic Converters and Used Catalytic 

Converters . 

10/25/07 On-road
38

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Commercial Harbor Craft 11/15/07 Off-road

Greenhouse Gas Emissions Mandatory Reporting 12/06/07 Not applicable

Heavy -Duty Diesel In-Use Compliance ~ Gaseous Pollutant 

Measurement 12/06/07 On-road

In-Use On-Road Diesel-Fueled Heavy-Duty Drayage Trucks 12/06/07 On-road

Ocean-Going Vessels While At Berth At A California Port 12/06/07 Off-road

Port Truck Modernization. 12/07/07 On-road

Vapor Recovery Defects List N/A Vapor recovery

Verification Procedure, Warranty and In-Use Compliance to 

Control Emissions from Diesel Engines 1/24/08 On-road

Zero Emission Vehicle Regulation 3/27/08 On-road

Consumer Products Regulation 6/26/08 Consumer products

Fuel Requirements for Ocean-Going Vessels 7/24/08 Fuels/Off-road

Spark-Ignition Marine Engine and Boat Regulations 7/24/08 Off-road

Air Quality Improvement Program For the Alternative and 

Renewable Fuel and Vehicle and Technology Program 9/25/08 On-road

Portable Outboard Marine Tanks and Components 9/25/08 Off-road

Large Spark Ignition Engines 11/21/08 Off-road

Small Off Road Engine Regulations 11/21/08 Off-road

Truck / Bus Regulation 2008 12/11/08 On-road

Greenhouse Gas Emissions from Heavy-Duty Vehicles 12/11/08 On-road

In-Use Off-Road Diesel Fueled Fleets 1/22/09 Off-road

Small Containers of Automotive Refrigerant 1/22/09 Not applicable

Aftermarket Critical Emission Control Parts on Highway 

Motorcycles 1/22/09 On-road

Semiconductor Operations 2/26/09 Not applicable
39

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Sulfur Hexafluoride Emissions in Non-Semiconductor and NonUtility Applications 2/26/09 Not applicable

Tire Pressure Regulation 3/26/09 On-road

Low Carbon Fuel Standard 4/23/09 On-road

Air Quality Improvement Program 4/23/09 On-road

Plug-In Hybrid Electric Vehicle Test Procedure Amendments and 

Aftermarket Parts Certification Requirements 5/28/09 On-road

Heavy-Duty On-Board Diagnostics 5/28/09 On-road

Enhanced Fleet Modernization Program (Car Scrap) (formerly 

“Expanded Vehicle Retirement Program”). 6/26/09 On-road

Methane Emissions from Municipal Solid Waste Landfills 6/26/09 Not applicable

In-Use Off-Road Diesel Fueled Fleets 7/23/09 Off-road

AB 32 Cost of Implementation Fee Regulation 9/24/09 Not applicable

New Passenger Motor Vehicle Greenhouse Gas Emission 

Standards 9/24/09 On-road

Consumer Products Regulation and Test Method 310 9/24/09 Consumer products

Emission Warranty Information Reporting and Recall 

Regulations 11/19/09 On-road

Tables of Maximum Incremental Reactivity Values 11/3/09 Not applicable

High Global Warming Potential Refrigerants for Stationary 

Sources 12/9/09 Not applicable

Indoor Air Cleaning Devices 12/9/09 Not applicable

Portable Equipment Registration Program (PERP), Portable 

Engine ATCM, and In-Use Off-Road Diesel-Fueled Vehicles 1/28/10 Off-road

Verification Procedure, Warranty and In-Use Compliance 

Requirements for In-Use Strategies to Control Emissions from 

Diesel Engines

1/28/10 On- and off-road

New Passenger Motor Vehicle Greenhouse Gas Emission 

Standards 2/25/10 On-road

Sulfur Hexafluoride Emissions from Gas Insulated Switchgear 2/25/10 Not applicable

Area Designations for State Ambient Air Quality Standards 3/25/10 Not applicable

Commercial Harbor Craft Operated Within California Waters 

and 24 Nautical Miles of the California Baseline 6/24/10 Off-road
40

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Energy Efficiency and Co-Benefits Assessment of Large 

Industrial Facilities 7/22/10 Not applicable

Periodic Smoke Inspection Program 10/21/10 On-road

Airborne Toxic Control Measure for Stationary Compression 

Ignition Engines 10/21/10 Not applicable

Consumer Products Regulations 11/18/10 Consumer products

Transport Refrigeration Units 11/18/10 Off-road

California Cap-and-Trade Program 12/16/10 Not applicable

Truck and Bus Regulation 2010 12/16/10 On-road

In-Use Off-Road Diesel-Fueled Fleets 12/16/10 Off-road

Mandatory Reporting for Greenhouse Gas Emissions 12/16/10 Not applicable

Low Carbon Fuel Standard Intensity Lookup Tables 2/24/11 On-road

Ocean-Going Vessels Within California Waters and 24 Nautical 

Miles of the California Baseline 6/23/11 Off-road

Heavy-Duty Diesel In-Use Compliance Regulation 6/23/11 On-road

Area Designations for State Ambient Air Quality Standards 6/23/11 Not applicable

Vapor Recovery Certification and Test Procedures 9/22/11 Vapor Recovery

Mobile Cargo Handling 9/22/11 On and Off-road

AB 32 Cost of Implementation Fee Regulation 10/20/11 Not applicable

California Reformulated Gasoline Regulations 10/20/11 Fuels

Transport Refrigeration Units 10/20/11 Off-road

Specially Constructed Vehicles (Kit Cars) 11/17/11 On-road

Small Off-Road Engine and Tier 4 Off-Road CompressionIgnition Engine Regulations and Test Procedures; and, 

Amendments to the Exhaust Emission Certification Test Fuel for 

Off-Road Spark-Ignition Engines, Equipment, and Vehicles

12/16/11 Off-road

Low Carbon Fuel Standard 12/16/11 On-road
41

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category

Vapor Recovery Equipment Defects List N/A Vapor Recovery

Area Designations for State Ambient Air Quality Standards N/A Not applicable

Low-Emission Vehicle and GHG 2012 (Advanced Clean Cars 

Program) 1/26/12 On-road

Zero Emission Vehicle Regulation 1/26/12 On-road

Cap and Trade Regulation 6/28/12 Not applicable

Heavy-Duty OBD and OBD II Regulation 8/23/12 On-road

Verification Procedures Regulation 8/23/12 On- and Off-road

Mandatory Reporting, Fee Regulation and Cap and Trade 2012 9/20/12 Not applicable

Consumer Products: Automotive Windshield Washer Fluid 

Products 10/18/12 Consumer products

Emergency Regulation for Tractor Trailer Greenhouse Gas 

Regulation N/A On-road

LEV III GHG and ZEV Regulation Amendments for Federal 

Compliance Option 11/15/12 On-road

Alternative Fuel Conversion Certification Procedures 9/26/13 Fuels

Area Designations (2013 Amendments to

Area Designations for State Ambient Air

Quality Standards)

N/A Not applicable

Gasoline and Diesel Fuel Test Methods 1/25/13 Fuels

Off-Highway Recreational Vehicles 7/25/13 Off-road

Vapor Recovery Systems at GDFs and Cargo Tanks 7/25/13 Vapor recovery

Consumer Products 9/26/13 Consumer Products

Cap and Trade 10/24/13 Not applicable

Mandatory Reporting 10/24/13 Not applicable

Mobile Agricultural Equipment 10/24/13 Off-road

Zero Emission Vehicle Regulation 10/24/13 On-road

Heavy Duty GHG Phase 1 12/12/13 On-road
42

Table A-1

Measures Adopted by the California Air Resource Board

1990 to 2013

Measure Hearing Date Category
43

A-2. State Fuel Measures

CARB has adopted a number of revisions to its reformulated gasoline program and clean 

diesel program since 1990, as well as measures addressing other motor vehicle fuels and fuel 

standards for off-road sources. Table A-2 is a list of these revisions. 

Table A-2

Fuel Measures Adopted by the California Air Resources Board

1990 to 2013

Measure Hearing 

Date1

Comments

Wintertime Limits for Sulfur in Diesel Fuel. T 13, CCR, 2255 06/21/90 Renumbered to section 2281. 

Approved 60 FR 43379 (8/21/95)

California Reformulated Gasoline (CaRFG), Phase I. T 13, CCR, 

2251.5 09/27/90 RVP standard for period between 1992 and 1996. Obsolete.

Limit on Aromatic Content of Diesel Fuel. T 13, CCR, 2256 12/13/90

Renumbered to section 2282. 

Approved 60 FR 43379 (8/21/95) 

(listed as 4/15/01 adoption in FR)

California Reformulated Gasoline, Phase II. T 13, CCR, 2250, 

2255.1, 2252, 2260 - 2272, 2295 11/21/91 Approved 60 FR 43379 (8/21/95)

Wintertime Gasoline Program. T 13, CCR, 2258, 2298, 2251.5, 

2296 11/21/91 Approved 60 FR 43379 (8/21/95)

Wintertime Oxygenate Program. T 13, CCR, 2258, 2251.5, 

2263(b), 2267, 2298, 2259, 2283, 2293.5 09/09/93 Carbon monoxide control measure

Diesel Fuel Regulations - Emergency. T 13, CCR, 2281(h), 

2282(1) 10/15/93 Approved 60 FR 43379 (8/21/95) 

Predictive Model for Phase II CaRFG. T 13, CCR, 2261, 2262-

2270 06/09/94 Superseded by 11/18/04 & 6/14/07 rules

Small Refiner Diesel. T 13, CCR, 2282(e)(1) 07/24/94 Approved 60 FR 43379 (8/21/95) 

Test Method for Oxygen in Gasoline. T 13, CCR, 2251.5(c), 

2258(c), 2263(b) 06/29/95

Section 2251.5 - obsolete; section 

2258 wintertime; section 2263, 

superseded

Test Methods for CaRFG 13, CCR, 2263(b) 10/26/95 Superseded by 11/18/04 & 6/14/07 

rules

Required Additives in Gasoline (Deposit Control Additives). T 

13, CCR, 2257 and incorporates testing procedures. 11/16/95 Superseded by 11/18/04 & 6/14/07 rules

CaRFG Housekeeping & CARBOB. T 13, CCR, 2263.7, 2266.5, 

2260, 2262.5, 2264, 2265, 2272 12/14/95 Superseded by 11/18/04 & 6/14/07 rules

CaRFG Variance Requirements. T 13, CCR, 2271 (Emergency) 01/25/96 Superseded by 11/18/04 & 6/14/07 

rules
44

Table A-2

Fuel Measures Adopted by the California Air Resources Board

1990 to 2013

Measure Hearing 

Date1

Comments

Regulation Improvements and Repeals (fuel additives). T 13, 

CCR, 2201, 2202 05/30/96 Repealed sections

Diesel Fuel Test Methods. T 13, CCR, 1956.8(b), 1960.1(k), 

2281(c), 2282(b), (c) and (g) 10/24/96 Approved 75 FR 26653 (5/12/10)

Liquefied Petroleum Gas Propane Limit Specification Delay. T 

13, CCR, 2292.6 03/27/97 Expired

Cleaner Burning Gasoline Model Flexibility. T 13, CCR, Sections 

2260, 2262.1, 2262.3, 2262.4, 2262.5, 2262.6, 2262.7 and 2265 08/27/98 Superseded by 11/18/04 & 6/14/07 rules

Gasoline Deposit Control Additive Regulation. T 13, CCR, 2257, 

and incorporating test procedures 09/24/98 Superseded by 11/18/04 & 6/14/07 rules

Cleaner Burning Gasoline (Increasing the Oxygen Content). T 13, 

CCR, sections 2262.5(b) and 2265(a)(2) 12/11/98 Wintertime gasoline for South Coast and Imperial County. 

Specifications for Liquid Petroleum Gas Used as a Motor Vehicle 

Fuel. T 13, CCR, 2292.6 12/11/98 No identifiable emissions reductions

Cleaner Burning Gasoline, Oxygen Requirement for Wintertime 

In Lake Tahoe Area/Gas Pump Labeling for MTBE. T 13, CCR, 

2262.5, and 2273

06/24/99 Not applicable to the SC 

area/Obsolete

CaRFG Phase 3 Amendments (Phase out of MTBE, standards, 

predictive model). T 13, CCR, 2260, 2261, 2262.1, 2262.5, 2263, 

2264, 2264.2, 2265, 2266 etc...

12/09/99

2262.1 renumber to 2262.4; 2264 

(designation of alternative limits) not 

approved; otherwise superseded by 

11/18/04 and 6/14/07 rules

CaRFG Phase 3 Test Methods. T 13, CCR, sections 2263(b) 11/16/00 Superseded by 11/18/04 & 6/14/07 

rules

CaRFG Phase 3 Follow-up Amendments. T 13, CCR, sections 

2260, 2261, 2262.3, 2262.5, 2263, 2264, 2265, 2266, 2266.5, 

2270, 2272, 2273, 2282, 2296, 2297, 2262.9 and incorporated 

test procedures

11/16/00 Superseded by 11/18/04 & 6/14/07 

rules

CaRFG Phase 3 Amendments. T 13, CCR, 2261, 2262, 2262.4, 

2262.5, 2262.6, 2262.9, 2266.5, 2269, 2271, 2272, 2265, and 

2296

07/25/02 Superseded by 11/18/04 & 6/14/07 

rules

CaRFG Phase 3 Amendments (specifications for De Minimus 

Levels of Oxygenates and MTBE Phase Out Issues). T 13, CCR, 

2261, 2262.6, 2263, 2266.5, 2272, 2273, 2260, 2273.5

12/12/02

Superseded by 11/18/04 & 6/14/07 

rule. Approved 75 FR 26653 (5/12/10) 

(except for section 2272 (CaRFG3 

standards for small refineries) and 

2273.5 (requirement to identify 

gasoline containing ethanol when 

delivered to retail station)) 

Specifications for Motor Vehicle Diesel Fuel. T 13 & T 17, CCR, 

1961, 2281, 2282, 2701, 2284, 2285, 93114, and incorporated 

test procedure

07/24/03 Approved 75 FR 26653 (5/12/10)
45

Table A-2

Fuel Measures Adopted by the California Air Resources Board

1990 to 2013

Measure Hearing 

Date1

Comments

California Reformulated Gasoline, Phase 3. T 13, CCR, 2260, 

2262, 2262.4, 2262.5, 2262.6, 2262.9, 2263, 2265 (and the 

incorporated “California Procedures”), and 2266.5 

11/18/04 Approved 75 FR 26653 (5/12/10)

Diesel Fuel Standards for Harbor Craft & Locomotives. T 13, 

CCR, 2299, 2281, 2282, and 2284, and T 17, CCR, 93117 11/18/04 See CARB 6/29/09 Letter

Emergency Regulation for Temporary Delay of Diesel Fuel 

Lubricity Standard. T 13, CCR, 2284 11/24/04 Temporary delay of standard. Expired

Reid Vapor Pressure Limit. Emergency Rule. T 13, CCR, 2262 and 

2262.4 08/08/05 Operative for September and October 2005 only. Obsolete.

Phase 3 Reformulated Gasoline (Ethanol Permeation). T 13, 

CCR, 2260, 2261, 2262, 2263, 2264, 2265, 2266, 2270, 2271, 

and 2273

06/14/07 Approved 75 FR 26653 (5/12/10)

Cleaner Fuels in Ocean-Going Vessel Main Engines and Auxiliary 

Boiler. T 13, CCR, 2299.2 and T 17, CCR, section 93118.2 07/24/08

U.S. Secretary of State has accepted 

the designation by the International 

Maritime Organization of an Emission 

Control Area (ECA) in the waters off 

the North American coasts. Under 

this designation, ships are required to 

meet tighter fuel and emissions 

standards. Within the North American 

ECA, first-phase fuel sulfur standard 

(August 2012), second phase (January 

2015), and NOx after treatment 

requirements (2016). Under the 

terms of CARB’s regulation, the 

requirements set forth therein shall 

remain in effect until the CARB 

Executive Order issues written 

findings that federal requirements are 

in place that will achieve equivalent 

emissions reduction within the 

Regulated California Waters and are 

being enforced within the Regulated 

California Waters. 13 CCR, section 

2299.2(j)(1).

Ocean-Going Vessels (OGV) Within California Waters and 24 

Nautical Miles of the California Baseline. T 13, CCR, 2299.3; T 

17, CCR, 93118.3.

6/23/11

Adjusts the offshore regulatory 

boundary; facilitates successful 

transition to very low sulfur fuels by 

aligning implementation dates more 

closely with recently approved 

federal requirements; See above 

comment in 7/24/08 OGV measure 

regarding North American ECA.
46

Table A-2

Fuel Measures Adopted by the California Air Resources Board

1990 to 2013

Measure Hearing 

Date1

Comments

California Reformulated Gasoline Regulations. T 13, CCR, Repeal 

section 2258, and amend sections 2260, 2261, 2264, 2265 

2265.1, 2266, 2266.5, and 2271.

10/20/11 See staff report. No additional 

reductions expected.

Gasoline and Diesel Fuel Test Methods. T 13, CCR, 2262, 2263, 

2282. 1/25/13 Additional test methods 

Alternative Fuel Conversion Certification Procedures. T 13, CCR, 

2030, 2031. 9/26/13

Administrative and procedural 

changes. Impact on emissions will 

depend on sales of vehicle 

conversions of cleaner versus the 

same emission standards. This 

measure has not yet been approved 

by the State of CA’s Office of 

Administrative Law (OAL).
47

A-3. State On-Road Mobile Sources Measures

Table A-3 lists measures adopted by CARB since 1990 for on-road sources.

Table A-3

On-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing Date1 Comments

Certification Procedure for Aftermarket Parts. VC 27156 & 38391 02/08/90 Compliance provisions

Emission Standards for Medium Duty Vehicles. T 13, CCR, 1900, 

1956.8, 1960.1, 1968.1, 2061, 2112, 2139 06/14/90 Waiver granted September 16, 1994 (59 FR 48625 (9/22/94))

Evaporative Emission Standards. T 13, CCR, 1976 08/09/90 Waiver granted August 25, 1994 (59 FR 

46979 (9/13/94))

Low Emission Vehicles and Clean Fuels. T 13, CCR, 1900, 1904, 

1956.8, 1960.1, 1960.1.5, 1960.5 and 2111, 2112, 2125, and 2139, 

2061.

09/28/90

Waivers granted January 7, 1993 & April 

6, 1998 (58 FR 4166 (1/13/93) & 63 FR 

18403 (4/15/98))

Heavy Duty Diesel Smoke Emission Testing. T 13, CCR, 2180-2187 11/08/90 Inspection program

Onboard Diagnostics for Light-Duty Trucks and Light & MediumDuty Motor Vehicles. T 13, CCR, 1977, 1968.1 09/12/91 Waiver granted October 2, 1996 (61 FR 

53371, 10/11/96)

Onboard Diagnostic, Phase II. T 13, CCR, 1968.1, 1977 11/12/91

Low Emission Vehicles amendments revising reactivity adjustment 

factor (RAF) provisions and adopting a RAF for M85 transitional 

low emission vehicles. T 13, CCR, 1960.1

11/14/91 Confirm within the scope finding 

requested February 18, 1993

Alternative Motor Vehicle Fuel Certification Fuel Specification. T 

13 & 26, CCR, 2290-2292.7, 1960.1(k), 1956.8(b), 1956.8(d) 3/12/92 Confirm within the scope finding requested February 17, 1994

Standards and Test Procedures for Alternative Fuel Retrofit 

Systems. T 13, CCR, 2030, 2031 05/14/92 Compliance provisions

Phase 2 RFG certification fuel specifications. T 13, CCR, 1960.1, 

1956.8(d) 08/13/92 Confirm within the scope finding requested February 17, 1994

Substitute Fuel or Clean Fuel Incorporated Test Procedures. T 13, 

CCR, 1960.1(k), 2317 11/12/92 Confirm within the scope finding requested February 17, 1994

Smoke Self Inspection Program for Heavy Duty Diesel & Gasoline 

Engines. T 13, CCR, 2190-2194, 2180-2187, 1956.8(b) 12/10/92 Inspection program

Certification Requirements for Low Emission Passenger Cars, 

Light-Duty Trucks & Medium Duty Vehicles. T 13, CCR, 1960.1, 

1976, 2061, 1900

01/14/93 Confirm within the scope finding 

requested February 21, 1994

Onboard Diagnostic, Phase II. T 13, CCR, 1968.1 07/09/93 Waiver granted October 2, 1996 (61 FR 

53371, 10/11/96)
48

Table A-3

On-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing Date1 Comments

Urban Transit Buses. T 13, CCR, 1956.8, 1965, 2112 06/10/93 Found within the scope September 28, 

2004 (69 FR 59920, October 6, 2004)

Evaporative Emission Standards and Test Procedures. T 13, CCR, 

1976 02/10/94 Waiver granted July 28, 1999 (64 FR 42689, 8/5/99)

Diesel Fuel Certification. T 13, CCR, 1956.8(b)&(d), 1960.1(k), 

2292.6 09/22/94 Confirm within the scope finding requested September 14, 1995

Self Inspection Program for Heavy Duty Diesel Engines. T 13, CCR, 

2190-2194, 2180-2187, 1956.8(b) 11/09/94 Inspection program

Onboard Diagnostics, Phase II. T 13, CCR,1963.1, & Certification 

Procedures 12/08/94 Waiver granted October 2, 1996 (61 FR 53371, 10/11/96)

Periodic Smoke Inspection Program. T 13, CCR, 2190 12/08/94 Inspection program

Heavy Duty Vehicle Exhaust Emission Standards. T 13, CCR, 1956.8 

and incorporate test procedures. 06/29/95 Found within the scope September 28, 2004 (69 FR 59920, 10/6/04)

Onboard Refueling Vapor Recovery Standards. T 13, CCR, 1976, 

1978 and incorporate test procedures 06/29/95 Waiver granted August 13, 2002 (67 FR 54180, 8/21/02)

Retrofit Emission Standards. T 13, CCR, 1956.9, 2030, 2031, and 

incorporate test procedures 07/27/95 Compliance provision

Low Emission Vehicle Standards 3 (LEV 3). T 13, CCR, 1956.8, 

1960.1, 1965, 2101, 2061, 2062, and incorporate test procedures 09/28/95 Confirm within the scope finding requested October 8, 1996.

Postpone Zero Emission Vehicle Requirements. T 13, CCR, 1900, 

1960.1, 1976 03/28/96 Found within the scope January 18, 2001 (66 FR 7751, 1/25/01)

Diesel Fuel Certification Test Methods. T 13, CCR, 1956.8(b), 

1960.1(k), 2281(c), 2282(b), (c) and (g) 10/24/96 Confirm within the scope finding requested November 24, 1997

Onboard Diagnostics, Phase II, Technical Status. T 13, CCR, 1968.1, 

2030, 2031 12/12/96 Initial notice 69 FR 5542 (February 5, 2004)

Postpone Enhanced Evaporative Emission Requirements for UltraSmall Volume Vehicle Manufacturers. T 13, CCR, 1976 and 

incorporate test procedures

05/22/97 Found within the scope July 28, 1999 (64 

FR 42689 (8/5/99))

Off-Cycle Emissions Supplemental Federal Test Procedures 

(SFTPs). T 13, CCR, 1960.1, 2101 and incorporate test procedures 07/24/97 Waiver granted September 30, 2004 (69 FR 60996, 10/14/04)

Heavy Duty Vehicle Smoke Inspection Program/Periodic Smoke 

Inspection Program. T 13, CCR, 2180-2188 and 2190-2194 12/11/97 Inspection program

Heavy Duty Vehicle Regulations: 2004 Standards. T 13, CCR, 

1956.8, 1965, 2036, 2112 and test procedures 04/23/98 Confirm within the scope finding requested December 26, 2001
49

Table A-3

On-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing Date1 Comments

Low Emission Vehicles Standards (LEV 2) and Compliance 

Assurance Program (CAP 2000). T 13, CCR,1961 & 1962 (both 

new); 1900, 1960.1, 1965, 1968.1, 1976, 1978, 2037, 2038, 2062, 

2101, 2106, 2107, 2110, 2112, 2114, 2119, 2130, 2137-2140, 

2143-2148

11/05/98

Waiver granted April 11, 2003 (68 FR 

19811 (4/22/03))/found within the 

scope (1999 ZEV amendments) 

December 21, 2006 (71 FR 78190 

(12/28/06))

Exhaust Standards for (On-Road) Motorcycles. T 13, CCR, 1958 12/10/98 Waiver granted July 27, 2006 (71 FR 

44027, 8/3/06)

Voluntary Accelerated Light Duty Vehicle Retirement Regulations. 

T 13, CCR, 2600-2610 12/10/98

Establishes standards for a voluntary 

accelerated retirement program. 

Revised 2/21/06 and 12/7/06

Clean Fuels Regulation Requirements. T 13, CCR, sections 2300-

2317, and 2303.5, 2311.5 07/22/99

Removal of obsolete provisions, 

streamlining and other minor changes to 

9/1990 rule.

Transit Bus Standards. T 13, CCR, 1956.1, 1956.2, 1956.3, 1956.4, 

1956.8, 1965 02/24/00

Waiver granted for LDV & HDV July 15, 

2013 (78 FR 44112, July 23, 2013). 

Combination of fleet requirements, 

emission standards, and zero-emission 

bus standards. Federal & state emission 

standards are the same for 2010 MY 

buses.

Light-and Medium Duty Low Emission Vehicle Alignment with 

Federal Standards. Exhaust Emission Standards for Heavy Duty 

Gas Engines. T 13, CCR, 1956.8 &1961

12/07/00

Waiver granted for LDV & HDV April 11, 

2003 (68 FR 19811, 4/22/03). Initial 

notice on within-the-scope finding 

request for HDGE: 72 FR 27114 

(5/14/07).

Heavy Duty Diesel Engines "Not-to-Exceed (NTE)" Test Procedures. 

T 13 CCR, 1956.8, 2065 12/07/00 Confirm within the scope finding requested December 26, 2001.

Zero Emission Vehicle Regulation Update. T 13, CCR, 1900, 

1960.1(k), 1961, 1962 & incorporated Test Procedure 01/25/01

Found within the scope finding and 

waiver granted on December 21, 2006 

(71 FR 78190, 12/28/06)

Zero Emission Vehicle Infrastructure and Standardization of 

Electric Vehicle Charging Equipment. T 13, CCR, 1900(b), 1962(b) 

1962.1 

06/28/01

Found within the scope and waiver 

granted on December 21, 2006 (71 FR 

78190, 12/28/06)

Heavy Duty Diesel Engine Standards for 2007 and Later. T 13, CCR, 

1956.8 and incorporate test procedures 10/25/01 Waiver granted August 19, 2005 (70 FR 50322, 8/26/05)

Low Emission Vehicle Regulations. T 13, CCR, 1960.1,1960.5, 1961, 

1962 and incorporate test procedures and guidelines 11/15/01 Found within the scope April 21, 2005 (70 FR 22034, 4/28/05)

California Motor Vehicle Service Information Rule. T 13&17, CCR, 

1969 & 60060.1 - 60060.7 12/13/01 Compliance provision. Very similar to EPA regulations at 40 CFR 86.1808.01
50

Table A-3

On-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing Date1 Comments

Voluntary Accelerated Light Duty Vehicle Retirement Regulations. 

T 13, CCR, 2601-2605, 2606 & appendices C & D, and 2607-2610 02/21/02

Establishes standards for a voluntary 

accelerated retirement program. 

Revised 12/7/06.

On-Board Diagnostic II Review Amendments. T 13, CCR, 1968.1, 

1968.2, 1968.5 04/25/02 Initial notice 69 FR 5542 (2/5/04)

Diesel Retrofit Verification Procedure, Warranty and In-Use 

Compliance Requirements. T 13, CCR, 2700-2710 05/16/02 Procedures to verify diesel retrofit technology. 

Revision to Transit Bus Regulations Amendments. Public Transit 

Fleet Rule and Emission Standards for New Urban Buses. T 13, 

CCR, 1956.1, 1956.2, 1956.4,1956.8, and 2112, & documents 

incorporated by reference

10/24/02

Waiver granted for LDV & HDV July 15, 

2013 (78 FR 44112, July 23, 2013). Slight 

relaxation in requirements over 2000 

rule.

Low Emission Vehicles II. Align Heavy Duty Gas Engine Standards 

with Federal Standards; minor administrative changes. T 13, CCR, 

1961, 1965, 1956.8, 1956.1, 1978, 2065 and documents 

incorporated by reference

12/12/02

Waiver granted August 19, 2005 (70 FR 

50322 (8/26/05)) for all but HDGE. 

HDGE standards adopted to harmonize 

with EPA’s. Initial notice on within-thescope finding request for HDGE: 72 FR 

27114 (5/14/07).

Airborne Toxic Control Measure for Diesel Particulate from School 

Bus Idling. T13, CCR, 2480 12/12/02 No emissions reductions claimed.

Zero Emission Vehicle Amendments for 2003. T 13, CCR, 

1960.1(k), 1961(a) and (d), 1900, 1962, and documents 

incorporated by reference

03/25/03

Found within the scope and waiver 

granted on December 21, 2005 (71 FR 

78190, 12/28/06)

Solid Waste Collection Vehicles. T 13, CCR, 2020, 2021, 2021.1, 

2021.2 09/24/03

Diesel reduction program. Minimal 

reductions. See CARB, “Staff Report: 

Initial Statement Of Reasons, Proposed 

Diesel Particulate Matter Control 

Measure for On-Road Heavy-Duty

Residential and Commercial Solid Waste 

Collection Vehicles,” June 6, 2003, p. 53.

Diesel Retrofit Verification Procedure, Warranty and In-Use 

Compliance Requirements (Amendments). T 13, CCR, 2701-2707 & 

2709 

12/11/03 Procedures to verify diesel retrofit

technology. 

CA Motor Vehicle Service Information Rule. T 13, CCR, 1969 01/22/04 Compliance provision. Very similar to 

EPA regulations at 40 CFR 86.1808.01

Heavy Duty Diesel Engine-Chip Reflash. T 13, CCR, 2011, 2180.1, 

2181, 2184, 2185, 2186, 2192, and 2194 03/27/04 Compliance provision.

Engine Manufacturer Diagnostic System Requirements for 2007 

and Subsequent Model Heavy Duty Engines. T 13, CCR, 1971 05/20/04 Waiver granted December 22, 2005 (71 FR 335, 1/4/06)
51

Table A-3

On-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing Date1 Comments

Urban Bus Engines/Fleet Rule for Transit Agencies. T 13, CCR, 

1956.1, 1956.2, 1956.3, and 1956.4 06/24/04

Waiver granted for LDV & HDV 7/15/13 

(78 FR 44112, 7/23/13). Added optional 

exhaust emission standards for dieselfueled hybrid-electric urban bus engines 

for authorized transit agencies with NOX

mitigation plans for the 2004–2006 

model years.

Airborne Toxic Control Measure for Diesel Particulate from Diesel 

Fueled Commercial Vehicle Idling. T 13, CCR, 2485 07/22/04

CARB has requested that EPA confirm 

requirement is not preempted. Initial

notice 75 FR 43975 (7/27/10)

Greenhouse Gas Standards. T 13, CCR, 1900, 1961 and 

Incorporated Test Procedures 09/23/04 Waiver granted 6/30/09 (74 FR 32744, 7/8/09)

Transit Fleet Rule. T 13, CCR, 2023, 2023.1, 2023.2, 2023.3, 

2023.4, 1956.1, 2020, 2021, repeal 1956.2, 1956.3, 1956.4 02/24/05

Waiver granted for LDV & HDV 7/15/13 

(78 FR 44112, 7/23/13). Diesel reduction 

program. Clarified the optional 

standards for hybrid-electric buses that 

were allowed in the 2004 rulemaking.

On-Board Diagnostic System Requirements for 2010 and 

Subsequent Model-Year Heavy-Duty Engines (HD OBD). T 13, CCR, 

1971.1

07/21/05 Waiver granted 8/13/08 (73 FR 52042, 

9/8/08)

2007-2009 Model-Year Heavy Duty Urban Bus Engines and the 

Fleet Rule for Transit Agencies. T 13, CCR, 1956.1, 1956.2, and 

1956.8

10/20/05

Waiver granted for LDV & HDV 7/15/13 

(78 FR 44112, 7/23/13). Aligns State 

emission standards with federal 

emission standards for heavy-duty 

diesel engines.

Requirements to Reduce Idling Emissions from New and In-Use 

Trucks, Beginning in 2008. T 13, CCR section 1956.8 and the 

incorporated document

10/20/05 Waiver granted on 2/8/12 (77 FR 9239, 

2/16/12).

Diesel Particulate Matter Control Measure for On-Road HeavyDuty Diesel-Fueled Vehicles Owned or Operated by Public 

Agencies and Utilities. T 13, CCR, 2022 and 2022.1

12/08/05

Diesel reduction program. Minimal 

reductions. See CARB, “Staff Report: 

Initial Statement Of Reasons, Proposed 

Diesel Particulate Matter Control 

Measure for On-Road Heavy-Duty 

Diesel-Fueled Vehicles Owned or 

Operated By Public Agencies And 

Utilities,” 10/21/05, p. 55.

Mobile Cargo Handling Equipment at Ports and Intermodal Rail 

Yards. T 13, CCR, 2479 12/08/05 Waiver (and authorization) granted on 11/28/11 (77 FR 9916, 2/21/12)).

AB 1009 Heavy-Duty Vehicle Smoke Inspection Program. T 13, 

CCR, 2180, 2180.1, 2181, 2182, 2183, 2184, 2185, 2186, 2187, and 

2188, 2189

01/26/06 Requires trucks have emission control 

labels.

Diesel Verification Procedure, Warranty & In-Use. T 13, CCR, 2702, 

2703, 2704, 2706, 2707, and 2709. 03/23/06

Procedures to verify diesel retrofit 

technology, supporting rule for in-use 

control measures.
52

Table A-3

On-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing Date1 Comments

Technical Amendments to Evaporative Exhaust and Evaporative 

Emissions Test Procedures. T 13, CCR, 1961,1976 and 1978. 05/25/06 Within the scope finding 7/22/10 (75 FR 44948, 7/27/10).

California Motor Vehicle Service Information Rule. T 13, CCR, 1969 

and incorporated documents 06/22/06 Compliance provision. Very similar to EPA regulations at 40 CFR 86.1808.01

Evaporative and Exhaust Emissions Test Procedures. T 13, CCR, 

1961, 1976, and 1978 06/22/06 Waiver granted 7/27/10 (75 FR 44951, 7/30/10).

On-Board Diagnostic II. T 13, CCR, 1968.2, 1968.5, 2035, 2037 and 

2038 09/28/06 ARB request sent to EPA on 1/22/08

Heavy-Duty In-Use Compliance Regulation. T 13, CCR, 1956.1, 

1956.8, and documents incorporated by reference 09/28/06

Compliance provision. Compliance 

program "essentially identical to EPA's." 

See Updated Information Digest for the 

Rule.

Zero Emission Bus Regulation. T13, CCR, 2023.1, 2023.3, & 2023.4 10/19/06

Delays ZEB requirements due to high 

bus costs and unproven durability, 

reliability and ability to produce the 

number of buses required by the 

regulation. See Updated Information 

Digest.

Voluntary Accelerated Retirement Regulation. T 13, CCR, 2601-

2610 and appendices A-D

12/07/06 Establishes standards for a voluntary 

accelerated retirement program.

Aftermarket (New) Catalytic Converters and Used Catalytic 

Converters. T 13, CCR, 2222 10/25/07

Establishes more stringent emissions 

performance and durability 

requirements for new aftermarket 

converters offered for sale in CA, and 

eliminates current provisions allowing 

the sale and use of used catalytic 

converters in CA. ARB has indicated this 

falls under CAA 209(c) because of a 

preexisting waiver.

Heavy-Duty Diesel In-Use Compliance ~ Gaseous Pollutant 

Measurement. T 13, CCR, 1956.8 12/06/07 Modifies the measurement allowances during compliance testing.

In-Use On-Road Diesel-Fueled Heavy-Duty Drayage Trucks. T 13, 

CCR, 2027. 12/06/07 77 FR 20308 (4/4/12).

Verification Procedure, Warranty and In-Use Compliance to 

Control Emissions from Diesel Engines. T 13, CCR, 2700-2710 1/24/08 Improves verification process and better support ARB’s in-use fleet rules.

Zero Emission Vehicle Regulation. (Six parts) T 13, CCR, 1900, 

1962, and California Exhaust Emission Standards and Test 

Procedures.

3/27/08 Waiver granted 9/26/11 (76 FR 61098, 

10/3/11)).
53

Table A-3

On-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing Date1 Comments

Air Quality Improvement Program For the Alternative and 

Renewable Fuel and Vehicle and Technology Program. T 13, CCR, 

2340-2345.

9/25/08

Ensures that both the Air Quality 

Improvement Program and the 

Alternative and Renewable Fuel and 

Vehicle Technology Program 

complement existing air quality 

programs and maintain or improve upon 

the emission benefits achieved.

Truck / Bus Regulation 2008. T 13, CCR, 2025, 2020 and 2022, 

2451- 2453, 2455, 2456, 2458, 2461, and 2462. 12/11/08 Revised 12/16/10. Revised version approved at 77 FR 20308 (4/4/12). 

Greenhouse Gas Emissions from Heavy-Duty Vehicles (TractorTrailers). T 17, CCR, 95300-95311. 12/11/08 Waiver granted 7/30/14 (79 FR 46256, 

8/7/14)

Aftermarket Critical Emission Control Parts on Highway 

Motorcycles. T 13, CCR, 2222 1/22/09

Amendments allow manufacturers to 

sell, offer for sale, advertise, or install 

aftermarket emission control parts for 

highway motorcycles.

Plug-In Hybrid Electric Vehicle Test Procedure Amendments and 

Aftermarket Parts Certification Requirements. T 13, CCR, 1961, 

1962, 1976, and 1978, and California Exhaust Emission Standards 

and Test Procedures

5/28/09

Amendments to adapt existing exhaust 

and evaporative emission test 

procedures to more accurately reflect 

the exhaust and evaporative emissions 

generated from new configurations of 

plug-in hybrid electric vehicles.

Air Quality Improvement Program 4/23/09

Guidelines for Air Quality Improvement 

Program to fund air quality 

improvement projects (AB 118)

Heavy-Duty On-Board Diagnostics. T 13, CCR, 1968 and 1971 5/28/09 Waiver granted 11/29/12 (77 FR 73459, 

12/10/12)

Enhanced Fleet Modernization Program (Car Scrap) (formerly 

“Expanded Vehicle Retirement Program”). T 13, CCR, 2620-2630 6/26/09

Expands CA’s existing vehicle 

retirement program to improve CA’s air 

quality through the voluntary early 

retirement of vehicles in the South 

Coast and San Joaquin Valley.

New Passenger Motor Vehicle Greenhouse Gas Emission 

Standards. T 13, CCR, 1961 and 1961.1, and the California Exhaust 

Emission Standards and Test Procedures for 2001 and Subsequent 

Model Passenger Cars, Light-Duty Trucks, and Medium-Duty 

Vehicles.

9/24/09

Allows manufacturers to meet the fleet 

average GHG emission requirements by 

pooling the CA and CAA Sec. 177 State 

Vehicle sales; allows use of data from 

the federal CAFE program to 

demonstrate compliance with CA’s new 

passenger motor vehicle GHG 

regulations; administrative amendments 

to align with current federal 

requirements.

Emission Warranty Information Reporting and Recall Regulations. 

T 13, CCR, 1956.8, 1958, 1961, 1976, 1978, 2111, 2112, 2122, 

2136, and 2141, and related test procedures.

11/19/09

Repeal 2007 Emission Warranty

Information Reporting and Recall (EWIR) 

amendments and readopt 1998 version 

of the EWIR regulation.

Verification Procedure, Warranty and In-Use Compliance 

Requirements for In-Use Strategies to Control Emissions from 

Diesel Engines. T 13, CCR, 2700- 2707, and 2711.

1/28/10 Amendments to improve the 

verification process.
54

Table A-3

On-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing Date1 Comments

New Passenger Motor Vehicle Greenhouse Gas Emission 

Standards. T 13, CCR, 1961 and 1961.1, and amendments to the 

CA Exhaust Emission Standards and Test Procedures

2/25/10

Allows manufacturer compliance with 

EPA standards to be deemed as 

compliant with CA’s standards for the 

2012 through 2016 MYs.

Periodic Smoke Inspection Program. T 13, CCR, 2190 10/21/10

Eliminates duplicative emissions testing 

requirements for owners of diesel fleet 

vehicles that operate in CA.

Truck and Bus Regulation 2010. (Includes three parts: Truck 

and Bus regulation, Tractor-Trailer GHG regulation, and the

Drayage Truck regulation.) T 13, CCR, 2025; T17, CCR, 95300-

95311; T13, CCR, 2027.

12/16/10

Approved 77 FR 20308 (4/4/12). For 

portions of the measure a waiver was 

granted on 7/30/14 and published at 79

FR 46256 (8/7/14).

Low Carbon Fuel Standard Intensity Lookup Tables. T 17, CCR, 

95486. 2/24/11

Amends the LCFS carbon intensity 

Lookup Tables through the adoption of 

28 additional fuel pathways.

Heavy-Duty Diesel In-Use Compliance Regulation. T 13, CCR, 1956 

and CA Exhaust Emission Standards and Test Procedures. 6/23/11

PM measurement allowance to 

compensate for uncertainties when 

performing compliance testing.

Mobile Cargo Handling. T 13, CCR, 2479 9/22/11

Waiver request submitted by CARB on 

5/16/13. Provides additional flexibility 

to CHE owners/ operators in complying 

with requirements by reducing 

compliance costs while continuing to 

reduce emissions of diesel PM and NOx.

Specially Constructed Vehicles (Kit Cars). T 13, CCR, 2210-2218. 11/17/11

New regulation and associated 

certification procedures for new lightduty engines for use in specially 

constructed vehicles.

Low Carbon Fuel Standard. T 17, CCR, 95480-95482, 95484-

95486, 95488, and 95490 12/16/11

Refines and improves certain aspects of 

the regulation; vast majority of the 

regulation remains unchanged.

Zero Emission Vehicle Regulation, Low-Emission Vehicle and GHG 

2012 (Advanced Clean Cars Program) . T 13, CCR, 1900, 1956, 

1960-1962, 1965, 1968, 1976, 1978, 2037, 2038, 2062, 2112, 

2139, 2140, 2145, 2147, 2235, 2300, 2302-2304, 2306-2318.

1/27/12 Waiver granted 12/27/12 (78 FR 2112, 

January 9, 2013).

Heavy-Duty OBD and OBD II Regulation. T 13, CCR, 1968 and 1971 8/23/12

Waiver request submitted by CARB on 

February 14, 2014. Amends monitoring 

and performance requirements of OBD 

II systems in diesel fueled medium-duty 

vehicles, the monitoring and 

performance requirements of HD OBD 

systems, and the enforcement 

provisions applicable to OBD II systems 

and HD OBD systems

Verification Procedures Regulation. T 13, CCR, 2700-2711. 8/23/12 Reduces the amount of in-use testing.

Emergency Regulation for Tractor Trailer Greenhouse Gas 

Regulation. T 17, CCR, 95300-95312 N/A

Corrects an oversight that required 

registration and compliance deadlines 

that preceded effective date of the rule.
55

Table A-3

On-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing Date1 Comments

LEV III GHG and ZEV Regulation Amendments for Federal 

Compliance Option. T 13, CCR, 1900, 1956, 1960-1962, and 1976 11/15/12

Amendments to new passenger motor 

vehicle GHG emission standards for MY 

2017-2025 to permit compliance based 

on federal GHG emission standards and 

additional minor revisions to the LEV III 

and ZEV regulations.

Zero Emission Vehicle Regulation. T 13, CCR, 1962 and California 

Exhaust Emissions Standards and Test Procedures. 10/24/13 Minor amendments 

Heavy Duty GHG Phase 1. (Five parts: GHG Regulations for 

Medium- and Heavy-Duty Engines and Vehicles; Optional Reduced 

Emission Standards for Heavy-Duty Engines; and amendments to 

the Tractor-Trailer GHG Regulation, the Diesel- Fueled Commercial 

Motor Vehicle Idling Rule, and the Heavy-Duty Hybrid-Electric 

Vehicles Certification Procedures.) T 13, CCR, 1900, 1956, 2036, 

2037, 2112, 2139, 2140, and 2147; T17, CCR, 95660-95664, and 

California Exhaust Emissions Standards and Test Procedures.

12/12/13

All related to on-road medium- and 

heavy-duty vehicles and engines; 

intended to help usher in new 

generations of lower-emitting 

trucks, to enhance the enforcement and 

implementation of existing 

requirements, and to establish new, 

optional provisions. This measure has 

not yet been approved by OAL.
56

A-4. State Off-Road Mobile Sources Measures

Table A-4 lists measures adopted by CARB since 1990 for off-road sources.

Table A-4

Off-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing 

Date1 Comments

Emission Standards for Utility and Lawn and Garden Engines. T 

17, CCR, 2400 et. seq. 12/13/90

Authorization granted July 5, 1995 

(60 FR 37440, 7/20/95) 1-year Implementation Delay in Emission Standards for Utility 

Engines. T 13, CCR, 2400, 2403-2407 04/08/93

Heavy Duty Diesel Cycle Engines. T 13, CCR, 2420-2427 01/09/92 Authorization granted May 15, 1995 

(60 FR 48981, 9/21/1995)

Off-Highway Recreational Vehicles. T 13, CCR, 2410-2414, 

2111-2140 01/03/94 Authorization granted December 23, 1996 (61 FR 69093, 12/31/1996)

Utility and Lawn and Garden Equipment Engines. T 13, CCR, 

2403(c), 11(a)(1)(I)(ii), 4(a)(1)(I)(ii) 07/28/94 Within the scope finding November 9, 2000 (65 FR 69763, 11/20/00)

Exemption of Military Tactical Vehicles. T 13, CCR, 1905, 2400, 

2420 12/14/95 Within the scope finding November 9, 2000 (65 FR 69763, 11/20/00)

Utility and Lawn and Garden Equipment Engines. CO Standards 1/25/96 Within the scope finding November 

9, 2000 (65 FR 69763, 11/20/00)

Wintertime Requirements for Utility Engines & Off-Highway 

Vehicles. T 13, CCR, 2403 09/26/96 Within the scope finding November 9, 2000 (65 FR 69763, 11/20/00)

Portable Equipment Registration Program. T 13, CCR, 2450-

2465 03/27/97 Revised on 12/10/98. Waiver request withdrawn/replaced.

Small Off-Road Engines (SORE). T 13, CCR, 2400, 2410-2414 03/26/98

Within the scope finding 11/9/00 (65 

FR 69767, 11/20/00), Authorization 

granted (durability requirements), 

10/10/03 (65 FR 65702, 11/21/03). 

Large Off-Road Spark-Ignition Engine Regulations. T 13, CCR, 

2430 et seq., and 2411-2414 10/22/98 Authorization granted 5/15/06 (71 FR 29623, 5/23/06)

1997 & Later Model Off-Highway Recreational Vehicles and 

Engines. T 13, CCR, 2410-2414, 2415 12/10/98 Authorization granted 1/27/14 (79 FR 6584, 2/4/14)

Revisions to Statewide Portable Equipment Registration 

Program. T 13, CCR, 2450-2463 12/10/98 Superseded on 2/26/04. 

Emission Standards and Test Procedures for 2001 Marine 

Engines. T 13, CCR, 2440 et seq

12/10/98 Authorization granted 3/22/07 (59 FR 

14546, 3/28/07)
57

Table A-4

Off-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing 

Date1

Comments

Aftermarket Parts for Off-Road Engines. T 13, CCR, 2470-2476 11/19/98 Compliance measure

Portable Container Spillage Control Measure. T 13, CCR, 2470-

2478 09/23/99 Similar federal regulation. 40 CFR part 59, subpart F.

Off-Road Compression Ignition Engines. T 13, CCR, 2111, 2112, 

2137, 2139, 2140, 2141, 2144, 2400, 2401, 2403, 2420, 2421, 

2423-2427, & appendix A to article 2.1.

01/27/00 Authorization granted, 2/5/10 (75 FR 

8056, 2/23/2010)

Marine Inboard Engines. T 13, CCR, 2111, 2112, 2139, 2140, 

2147, 2440-2442, 2443.1-2443.3, 2444, 2445.1, 2445.2, 2446, 

2444.2 and incorporation of documents by reference

07/26/01

Authorization granted in part 3/22/07 

(59 FR 14546, 3/28/07)) 2007 

standards waiver granted 4/26/11 

(76 FR 24872, 5/3/11)

Off-Highway Recreation Vehicles. T13, CCR, 2415 07/24/03 Authorization granted 1/27/14 (79 FR 

6584, 2/4/14). 

Small Off-Road Engines (SORE). T 13, CCR, 2400-2409, 2405.1, 

2405.2, 2405.3, 2750-2754, 2754.1, 2754.2, 2755-2767, 2767.1, 

2768-2773 and the documents incorporated by reference

09/25/03 Authorization granted, 12/11/06 (71 

FR 75536, 12/15/06)

Airborne Toxic Control Measure for Diesel Particulate for 

Transport Refrigeration Units. T 13, CCR, 2022 & 2477 12/11/03 Authorization granted (non-road) 1/9/09 (74 FR 3030, 1/16/09)

Airborne Toxic Control Measure for Diesel-Fueled Portable 

Engines. T 17, CCR,93116, 93116.1, 93116.2, 93116.3, 93116.4, 

and 93116.5

02/26/04 Authorization granted on 11/29/12 

(77 FR 72846, 12/6/12).

Modifications to the Statewide Portable Equipment 

Registration Program (PERP) Regulations. T 13, CCR 

Amendments to 2450-2465, and repeal of 2466

02/26/04 Superseded on 6/22/06 and 3/22/07. 

Off-Road Compression Ignition Engines. T 13, CCR, 2420, 2421, 

2423, 2424, 2425, 2427 12/09/04 Authorization granted 2/5/10 (75 FR 8056, 2/23/10)

Portable Fuel Containers (PFC) [Part 1 of 2]. T 13, CCR, 2467 

and 2467.1 09/15/05 Similar federal regulation. 40 CFR part 59, subpart F.

Portable Fuel Containers (PFC) [Part 2 of 2]. T 13, CCR 2467.2, 

2467.3, 2467.4, 2467.5, 2467.6, 2467.7; repeal of 2467.8, and 

adoption of new 2467.8 and 2467.9. 

09/15/05 Similar federal regulation. 40 CFR 

part 59, subpart F.

Airborne Toxic Control Measure for Cruise Ships Onboard 

Incineration. T 17, CCR, 93119 11/17/05 See Initial Statement of Reasons for Rule, p. II-1. 
58

Table A-4

Off-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing 

Date1

Comments

Marine Inboard Sterndrive Engines. T 13 CCR 2111, 2112, 2441, 

2442, 2444.2, 2445.1, 2446, 2447, and incorporated document 11/17/05

Revision to year 2007 standards in 

7/26/2001 marine inboard engine 

standards. Waiver requested by CARB 

on 2/7/08. No impact on reductions 

after 2020.

Auxiliary Diesel Engines and Diesel-Electric Engines Operated 

on Ocean-Going Vessels within California Waters and 24 

Nautical Miles of the California Baseline. T 13, CCR, 2299.1 and 

T 17, CCR, 93118

12/08/05

In Pacific Merchant Shipping 

Assciation v. Goldstene, 517 F.3d 

1108, 1109–10 (9th Cir. 2008), the 

Ninth Circuit enjoined California from 

enforcing this measure. The measure 

adopted on 07/24/08.

Mobile Cargo Handling Equipment at Ports and Intermodal Rail 

Yards. T 13, CCR, 2479 12/08/05 Authorization (and waiver) granted on 11/28/11 (77 FR 9916, 3/21/12).

Fork Lifts and Other Industrial Equipment. (Large Off-Road 

Spark Ignition Engines > 1 liter) T 13, CCR 2430, 2433, 2434. 

Adopt 2775, 2775.1, 2775.2, 2780, 2781, 2783, 2784, 2785, 

2786, 2787, 2788, and 2789.

05/26/06 Authorization granted on 3/29/12 (77 

FR 20329, 4/4/12).

Portable Equipment Registration Program. T 13, CCR, 2450, 

2451, 2452, 2453, 2454, 2455, 2456, 2457, 2458, 2459, 2460, 

2461, 2462, 2463, 2464, and 2465

06/22/06 Superseded on 3/22/07. 

Off-Highway Recreational Vehicles and Engines. T 13, CCR, 

2411-2413, 2415 & documents incorporated by reference 07/20/06 Authorization granted 1/27/14 (79 FR 6584 (2/4/14).

Emergency Regulation for Portable Equipment Registration 

Program Airborne Toxic Control Measures and Portable and 

Stationary diesel-Fueled Engines. T 13, CCR, 2452, 2455, 2456, 

2461; T17 CCR 93115, 93116.2, 93116.3

12/06/06 Expired.

Portable Equipment Registration Program and Airborne Toxic 

Control Measure for Diesel-Fueled Portable Engines. T 13, CCR, 

2451, 2452, 2456, 2458, 2459, 2460, 2461, and 2462, T 17, CCR, 

93116.1, 93116.2, 93116.3 , 93116.3.1

03/22/07 Authorization granted on 11/29/12 

(77 FR 72851, 12/6/12).

In-Use Off-Road Diesel Vehicles. T 13, CCR, 2449 07/26/07 Superseded on 1/22/09

Commercial Harbor Craft. T 13, CCR, section 2229.5 and T 17, 

CCR section 93118.5. 11/15/07 Authorization granted on 12/5/11 (77 FR 77521, 12/13/11)

Ocean-Going Vessels At Berth (Shore Power). T 13, CCR, 2299.3 

and T 17, CCR, 93118.3 and documents incorporated by 

reference

12/06/07 Authorization granted on 11/28/11 

(77 FR 77515, 12/13/11)
59

Table A-4

Off-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing 

Date1

Comments

Spark-Ignition Marine Engine and Boat Regulations. T 13, CCR, 

2111, 2112 (including Appendix A), 2139, 2147, 2440, 2441, 

2442, 2443.1, 2443.2, 2443.3, 2444.1, 2444.2, 2445, and the 

repeal of section 2448.

7/24/08

Notice of opportunity for public 

hearing and comment published on 

8/19/13 (78 FR 50413). 

Cleaner Fuels in Ocean-Going Vessel Main Engines and Auxiliary 

Boiler. T 13, CCR, 2299.2 and T 17, CCR, section 93118.2 07/24/08

U.S. Secretary of State has accepted 

the designation by the International 

Maritime Organization of an Emission 

Control Area (ECA) in the waters off 

the North American coasts. Under 

this designation, ships are required to 

meet tighter fuel and emissions 

standards. Within the North 

American ECA, first-phase fuel sulfur 

standard (August 2012), second 

phase (January 2015), and NOx after 

treatment requirements (2016). 

Under the terms of CARB’s 

regulation, the requirements set 

forth therein shall remain in effect 

until the CARB Executive Order issues 

written findings that federal 

requirements are in place that will 

achieve equivalent emissions 

reduction within the Regulated 

California Waters and are being 

enforced within the Regulated 

California Waters. 13 CCR, section 

2299.2(j)(1).

Portable Outboard Marine Tanks and Components. T 13, CCR, 

Chapter 9, article 6.5, section 2468, and adoption of “CP-510 

Certification Procedure for Portable Outboard Marine Tanks 

and Components”, “TP-511 Diurnal Rate from Portable 

Outboard Marine Tanks”, and “TP-512 Permeation Rate from 

Portable Outboard Marine Tank Fuel Hoses and Portable 

Outboard Marine Tank Primer Bulbs”

9/25/08

Requires permeation and evaporative 

technologies to reduce gasoline 

vapor emissions. Analogous federal 

requirement at 40 CFR 1060.105. 

Large Spark Ignition Engines. T 13, CCR, 2433 and California 

Exhaust Emissions Standards and Test Procedures 11/21/08

Authorization request sent to EPA on 

6/2/2014. Amended regulations to 

include more stringent exhaust 

emission standards; new regulations 

to control evaporative emissions. 

CARB is preparing package to request 

authorization. Authorization 

previously granted for prior Large SI 

engines measure. See 05/26/06 

measure.
60

Table A-4

Off-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing 

Date1

Comments

Small Off Road Engine Regulations. T 13, CCR, 2403, 2405, 

2406, 2408, and 2409, and California Exhaust Emission 

Standards and Test Procedures

11/21/08

Notice of opportunity for public 

hearing and comment published on 

4/28/14 (79 FR 30610). Modifies 

SORE regulations to address emission 

credits, etc.

Cleaner In-Use Heavy-Duty Trucks. T 13, CCR, 2025 12/11/08

Authorization granted on 5/16/13 (78 

FR 31536, 5/24/13) for portion of rule 

that applies to in-use nonroad yard 

trucks and auxiliary engines used in 

two-engine sweepers.

In-Use Off-Road Diesel Fueled Fleets. T 13, CCR, 2449, 2449.1, 

and 2449.2 1/22/09 Superseded on 7/23/09 

In-Use Off-Road Diesel Fueled Fleets. T 13, CCR, 2449, 2449.1, 

and 2449.2 7/23/09 Superseded on 12/16/10.

Portable Equipment Registration Program (PERP), Portable 

Engine ATCM, and In-Use Off-Road Diesel-Fueled Vehicles. 

(Part 1) T 13, CCR, 2025, 2449, 2452, 2453, 2456, 2458, 2460, 

2461 and 2462; T17, CCR, 93116; (Part 2) T 13, CCR, 2451, 

2452, 2453, 2456, 2458, 2460- 2462; T 17, CCR, 93116.

1/28/10

Operating extension for certain 

uncertified portable engines in small 

and medium fleets; revises the 

applicability of the regulations for 

water well drilling rigs; ... (more)

Commercial Harbor Craft Operated Within California Waters 

and 24 Nautical Miles of the California Baseline 6/24/10

Authorization request sent to EPA on 

5/28/2014. Authorization granted for 

prior harbor craft measure.

Transport Refrigeration Units. T 13, CCR, 2477 11/18/10 Authorization granted on 6/19/13 

(see 78 FR 38970, 6/28/13) .

In-Use Off-Road Diesel-Fueled Fleets. T 13, CCR, 2775 12/16/10 Authorization granted on 9/13/13 (78 

FR 58090, 9/20/13).

Ocean-Going Vessels Within California Waters and 24 Nautical 

Miles of the California Baseline. T 13, CCR, 2299.3; T 17, CCR, 

93118.3.

6/23/11

Adjusts the offshore regulatory 

boundary; facilitates successful 

transition to very low sulfur fuels by 

aligning implementation dates more 

closely with recently approved 

federal requirements; See above 

comment regarding North American 

ECA.

Mobile Cargo Handling. T 13, CCR, 2479 9/22/11

Notice of opportunity for public 

hearing and comment published on 

4/28/14 (79 FR 30608). Provides 

additional flexibility to CHE 

owners/operators in complying with 

the regulation’s requirements by 

reducing compliance costs while 

continuing to reduce emissions of 

diesel PM and NOx. 
61

Table A-4

Off-Road Mobile Source Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing 

Date1

Comments

Transport Refrigeration Units. T 13, CCR, 2477 10/20/11

Provides MY 2001 through 2003 

TRU engines that complied with 

applicable Low Emission TRU in-use 

performance standards by specified 

time periods, a one or two year 

extension from the more stringent 

Ultra-Low Emission TRU in-use 

performance standards.

Small Off-Road Engine and Tier 4 Off-Road CompressionIgnition Engine Regulations and Test Procedures; and, 

Amendments to the Exhaust Emission Certification Test Fuel for 

Off-Road Spark-Ignition Engines, Equipment, and Vehicles. T 13, 

CCR, 2403, 2404, 2407, 2412, 2421, 2423, 2424, 2425, 2425.1, 

2426, 2427, 2433, 2447, 2783, 2784 and incorporated by 

reference various California Exhaust Emission Standards and 

Test Procedures.

12/16/11

The amendments provide better 

harmonization with federal 

certification and exhaust emission 

testing requirements for SORE and 

tier 4 ORCI engine regulations and 

associated test procedures.

Verification Procedures Regulation. T 13, CCR, 2700-2711 8/23/12 To reduce testing costs, reduces the 

amount of in-use testing required.

Off-Highway Recreational Vehicles. T 13, CCR, 2416-2419 and 

TP-933. 7/25/13

Adds OHRV test procedure and 

evaporative emissions standard. This 

measure has not yet been approved 

by CA’s OAL.
62

A-5. State Consumer Product Measures

California has been regulating the VOC content of consumer products for over 20 years and 

continues to tighten standards and regulate more products. Table A-5 is a list of CARB’s 

rulemaking actions on consumer products since 1990.

Table A-5

Consumer Products Measures Adopted by the

California Air Resources Board

1990 to 2013

Measure Hearing 

Date1 Comments

Antiperspirant/Deodorants. T 17, CCR, 94500-94506 11/09/89 Approved 8/21/95 (60 FR 43379)

Consumer Products BAAQMD. T 17, CCR, 94520-94526 06/14/90 Not applicable to the South Coast 

area

Phase I - Consumer Products. T 17, CCR, 94507-94517 10/11/90 Approved 8/21/95 (60 FR 43379)

Phase II - Consumer Products. T 17, CCR, 94501, 94502, 94505, 

94514, 94503.5, 94506, 94507 - 94513, 94515 01/09/92 Approved 8/21/95 (60 FR 43379)

Notice of General Public Interest for Consumer Products. T 17, 

CCR, 94507 - 94517 11/30/92 Not a control measure

Alternative Control Plan for Consumer Products. T 17, CCR, 

94540-94555 09/22/94 Voluntary compliance option. No action.

Aerosol Coating Products and Alternative Control Plan. T 17, 

CCR, 94520-94528, 94540-94543, 94547. 03/23/95 Superseded by 6/22/00 rule.

Antiperspirants and Deodorants, Consumer Products, and 

Aerosol Coating Products. T 17, CCR, 94500-94506, 94508, 94521 09/28/95

Superseded by 6/24/04 rule for 

antiperspirants and deodorants; 

superseded by 11/17/06 rule for 

consumer products; superseded by 

11/17/06 rule for aerosol coating 

products.

Antiperspirants and Deodorants, Consumer Products, Aerosol 

Coating Products (ARB Test Method 310). T 17, CCR, 94506(a), 

94515(a), 94526

11/21/96

Superseded by 6/24/04 rule for 

antiperspirants and deodorants; 

superseded by 11/17/16 rule for 

consumer products; superseded by 

11/17/06 rule for aerosol coating 

products.

Consumer Products and Aerosol Coating Products Amendments. 

T 17, CCR, 94508-94515, 99517, 94321 11/21/96 Superseded by 11/17/06 rule

Consumer Products (Hair Spray) Amendments. T 17, CCR, 94509, 

94513, 94514 03/27/97 Voluntary compliance option. No action.

Consumer Products (Mid-Term Measures) Amendments. T 17, 

CCR, 94508, 94509, 94513 07/24/97 Superseded by 11/17/06 rule

Consumer Products (Hairspray Credit Program). T 17, CCR, 

94502, 94509, 94522, & 94548 11/13/97 Voluntary compliance option. No action.
63

Table A-5

Consumer Products Measures Adopted by the

California Air Resources Board

1990 to 2013

Measure Hearing 

Date1

Comments

Consumer Products, Aerosol Coatings & Antiperspirants and 

Deodorants. T 17, CCR, 94501, 94508, 94521, 94522, and 94524 11/19/98 Superseded by 11/17/06 rule

Consumer Products - LVP-VOC Definitions And Test Methods. T 

17, CCR, 94506, 94506.5, 94508(a)(78), 94515 and 94526, and 

the amendment of CARB Method 310

11/19/98

Superseded by 6/24/04 rule for test 

method 310 and 11/17/06 rule for 

rest.

California Consumer Products Regulation Mid-Term Measures II. 

T 17, CCR, 94508, 94509, and 94513 10/28/99 Superseded by 11/17/06 rule

Consumer Products Aerosol Adhesives Control Measure. T 17, 

CCR, 94508, 94509, 94512, 94513 05/25/00 Superseded by 11/17/06 rule

Aerosol (Paint) Coatings Products. T 17, CCR, 94700, 94701, 

94521-94524, 94526 06/22/00 Approved 9/13/05 70 FR 53920; superseded by 11/17/06 rule

Antiperspirant and Deodorant Regulations. T 17, CCR, 94502, 

94504 10/26/00 Superseded by 6/24/04 rule

Revised Tables of Maximum Incremental Reactivity Values. T 1, 

CCR, 94700. 12/03/03 Approved 9/13/05 70 FR 53920; superseded by 11/17/06 rule

Consumer Products & Methods 310/ATCM for ParaDicholorobenzene. T 17, CCR, 94501, 94506, 94507, 94508, 

94509, 94510, 94512, 94513, 94515, and 94526, and CARB 

Method 310, which is incorporated by reference 

06/24/04 Approved 11/4/09 (74 FR 57074) 

Consumer Products. T 17, CCR, 94508, 94509, 94510, 94513 and 

94523 11/17/06 Approved 11/4/09 (74 FR 57074) 

Consumer Products Regulation . T 17, CCR, 94508, 94509, 94510, 

94512, 94513, and 94515 6/26/08 Approved 5/12/11 (76 FR 27613). 

Consumer Products Regulation and Test Method 310. T 17, CCR, 

94508, 94509, 94510, 94512, 94513, and 94515, and 

amendments to ARB Method 310

9/24/09 Approved 2/13/12 (77 FR 7535)

Consumer Products Regulations. T 17, CCR, 94508, 94509, 

94510, 94512, and 94515, and amendments to ARB Method 310 11/18/10

Amendments set new or lower VOC 

limits for various categories of 

consumer products. Estimated 6.7 

tpd VOC reduction statewide.

Consumer Products: Automotive Windshield Washer Fluid 

Products. T 17, CCR, 94508 and 94509 10/18/12

Expands the areas where higher VOC 

content ready-to-use Automotive 

Windshield Washer Fluid products 

may be sold. No emissions benefit.
64

Table A-5

Consumer Products Measures Adopted by the

California Air Resources Board

1990 to 2013

Measure Hearing 

Date1

Comments

Consumer Products. T 17, CCR, 94501, 94506, 94508-9, 94512-

13, 94515, 94520-94526, 94528, 94560-94575, and 94700, and 

amendments to ARB Method 310.

9/26/13

Amendments to the following: 

regulations (i.e., Antiperspirants and 

Deodorants, Consumer Products, 

Aerosol Coating Products); Tables of 

MIR Values; Test Method 310; and 

proposed repeal of the Hairspray 

Credit Program. This measure has 

not yet been submitted to OAL. 
65

A-6. State Vapor Recovery Measures

Under California State law (Health and Safety Code Sections 41954), CARB is required to 

adopt procedures and performance standards for controlling gasoline emissions from gasoline 

marketing operations, including transfer and storage operations. State law also authorizes 

CARB, in cooperation with the districts, to certify vapor recovery systems, identify defective 

equipment, and develop test methods. The installation and operation of CARB-certified vapor 

recovery equipment is required and enforced by district rules. Table A-6 is a list of rulemaking 

actions taken by CARB since 1990 that address vapor recovery equipment certification, defects, 

and/or test methods.

Table A-6

Gasoline Vapor Recovery Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing Date Comments

Gasoline Vapor Recovery Systems. T 17, CCR, 94010-94015, 

94150-94160, 94000-94004, 94007. 06/29/95

CARB sets requirements for and 

certifies vapor recovery 

equipment. District rules establish 

requirements for the installation 

of CARB-certified equipment. See 

SCAQMD Rules 461 & 462

Gasoline Vapor Recovery Systems. T 17, CCR, 94010-94015 and 

94150, 94156, 94157, 94158, 94159, 94160, 94162 08/27/98

Gasoline Vapor Recovery Systems. T 17, CCR, 94011, 94153, 

94155, and incorporated test procedures, CP-201, TP- 201.4, 

and TP-201.6

06/24/99

Enhanced Gasoline Vapor Recovery Systems (In Station 

Diagnostics and Onboard Refueling Vapor Recovery). T 17, CCR, 

94011

03/23/00

Enhanced Gasoline Vapor Recovery Systems (Emergency Filing 

CP-201, section 18). T 17, CCR, 94011 03/23/00

Gasoline Vapor Recovery Systems Test Methods and 

Compliance Procedures. T 17, CCR, 94010, 94011, 94153, 

94155, 94163, 94164, 94165 & incorporated procedures

10/25/01

Gasoline Vapor Recovery Systems Defects. T 17, CCR, 94006 

and incorporated document. 11/15/01

Gasoline Vapor Recovery Systems Test Procedures. T 17, CCR, 

94010, 94011, 94163, 94164, and 94165 and procedures 

incorporated by reference, and 94166, 94167, and 

incorporation by reference.

12/12/02

Unihose Gasoline Vapor Recovery Systems. T17, CCR, 94011 07/22/04

Gasoline Vapor Recovery Systems at Dispensing Facilities. 

Emergency Filing. T 17, CCR, 94011 07/22/04

Gasoline Vapor Recovery System Equipment Defects List. T 17, 

CCR, 94006(b) & incorporated document 08/24/04
66

Table A-6

Gasoline Vapor Recovery Measures Adopted

by the California Air Resources Board

1990 to 2013

Measure Hearing Date Comments

Enhanced Gasoline Vapor Recovery Systems Extension. T 17, 

CCR, 94011 and certification procedure 11/18/04

Gasoline Vapor Recovery Systems. T 17 CCR 94011 and 

incorporated certification 06/22/06

Vapor Recovery Aboveground Storage Tanks (AST). T 17, CCR, 

94010, 94011, 94016 and 94168 and incorporated documents 06/21/07

Gasoline Vapor Recovery System Equipment Defects List. T 17, 

CCR, 94006 N/A

Vapor Recovery Defects List N/A

Vapor Recovery Certification and Test Procedures. T 17, CCR, 

94010, 94011, 94016, 94150, and 94168, and the incorporated 

D – 200 - Definitions for Vapor Recovery Procedures, CP – 201 -

Certification Procedure for Vapor Recovery Systems at Gasoline 

Dispensing Facilities, and CP - 206 - Vapor Recovery

Certification Procedure

9/22/11

Vapor Recovery Equipment Defects List N/A

Vapor Recovery Systems at GDFs and Cargo Tanks. T 17, CCR, 

94011, 94014, and 94016 7/25/13
67

A-7. State Rules that Do Not Address Ozone Precursors in the South Coast 

Nonattainment Area

A substantial number of the measures adopted by CARB since 1990 do not affect direct 

ozone precursor emissions in the Sacramento nonattainment area. These types of measures 

include fee rules, identification of toxic air contaminants, area boundary designations, and 

controls for pollutants other than ozone precursors. Table A-7 provides a list of these measures.

Table A-7

Measures Adopted by the California Air Resources Board

That Do Not Address Ozone in the South Coast Nonattainment Area

1990 to 2013

Measure Hearing Date1 Comments

Transported Pollutants (Ozone). T 17, CCR, 70500 12/04/89 Not an emissions reduction measure

Non-vehicular Test Methods. T 17, CCR, 94002, 94003 17, &26, 

94146-94149, 94132, 94135, 94139, 94140 01/11/90 Not an emissions reduction measure

Test Method for Asbestos in Serpentine Aggregate. T 17, & 26, 

CCR, 94147, Method 435 04/12/90 Not an emissions reduction measure

Airborne Toxic Control Measure for Asbestos in Surfacing 

Applications. T 17, & 26, CCR, 93106 04/12/90 Not an ozone precursor emissions reduction measure

Permit Fee Regulations for Non-vehicular Sources. T 17, CCR, 

90800.1, 90800, 90802-90803 05/10/90 Not an emissions reduction measure

Air Toxics "Hot Spots" Fee Regulation. T 17, & 26, CCR, 90700-

90704, 93300-93347 05/10/90 Not an emissions reduction measure

Dioxins Airborne Toxic Control Measure for Medical Waste 

Incinerators. T 17, CCR, 93104 07/12/90 Air toxics control measure

Air Toxics "Hot Spots" Emissions Inventory Criteria and 

Guidelines. T 17, & 26, CCR, 93300-93347 06/14/90 Not an emissions reduction measure

Criteria for Area Designations for the State Ambient Air Quality 

Standard. T 17, CCR, 70303 & 70304 06/14/90 Not an emissions reduction measure

Emissions Reduction Accounting Procedures for California Clean 

Air Act. T 17, CCR, 70700-70704 07/12/90 Not an emissions reduction measure

Identification of Inorganic Arsenic as a Toxic Air Contaminant. T 

17, & 26, CCR, 93000 07/12/90 Not an emissions reduction measure

Transport Mitigation Regulations. T 17, CCR, 70600-70601 08/09/90 Not an emissions reduction measure

Air Toxic Fee Schedule & Emissions Inventory Criteria and 

Guidelines. T 17, & 26, CCR, 90700-90704, 93300-93347 09/13/90 Not an emissions reduction measure

Identification of Trichloroethylene as a Toxic Air Contaminant. T 

17, & 26, CCR, 93000 10/11/90 Not an emissions reduction measure

Revision to Designation Criteria. T 17, CCR, 60200-60204, 60208 11/08/90 Not an emissions reduction measure

Identification of Vinyl Chloride as a Toxic Air Contaminant. T 17, 

& 26, CCR, 93000 11/13/90 Not an emissions reduction measure
68

Table A-7

Measures Adopted by the California Air Resources Board

That Do Not Address Ozone in the South Coast Nonattainment Area

1990 to 2013

Measure Hearing Date1 Comments

Identification of Chloroform as a Toxic Air Contaminant. T 17, & 

26, CCR, 93000 12/13/90 Not an emissions reduction measure

Conflict of Interest Code. T 17, CCR, 95001, et. seq. 12/13/90 Not an emissions reduction measure

Permit Fee Regulations for Non -Vehicular Sources. T 17, CCR, 

90800.2, 90801, 90803 02/24/91 Not an emissions reduction measure

Non - Vehicular Test Methods. T 17, CCR, 94131, 94132, 94142 04/11/91 Not an emissions reduction measure.

Acid Deposition Fee Regulations. T 17, CCR, 90621.2, 90620, 

90622 04/11/91 Not an emissions reduction measure. Obsolete.

Administrative Hearing Procedures. T 17, CCR, 60075.1, 

60075.47 05/09/91 Not an emissions reduction measure

Air Toxics "Hot Spots" Fee Regulation. T 17, & 26, CCR, 90700 -

90705 06/13/91 Not an emissions reduction measure

Agricultural Burning Guidelines. T 17, 80130, 80150, 80250, 

80260, 80290 07/11/91 Not an emissions reduction measure

Identification of Metallic & Inorganic Nickel Compounds as a 

Toxic Air Contaminant. T 17, & 26, 93000 08/08/91 Not an emissions reduction measure

State Ambient Air Quality Standard for SO2. T 17, CCR, 70100, 

70200, 70201 10/10/91 Not an emissions reduction measure

Identification of Perchloroethylene as a Toxic Air Contaminant. 

T 17, & 26, CCR, 93000 10/10/91 Not an emissions reduction measure

Area Designations. T 17, CCR, 60200, 60209 11/14/91 Not an emissions reduction measure

Identification of Formaldehyde as a Toxic Air Contaminant. T 

17, & 26, CCR, 93000 03/12/92 Not an emissions reduction measure

Atmospheric Acidity Protection Fees. T 17, CCR, 90621.3 04/09/92 Not an emissions reduction measure

Permit Fee Regulations for Non-vehicular Sources. T 17, CCR, 

90800.3, 90803 04/09/92 Not an emissions reduction measure

Criteria for Area Designations. T 17, CCR, 70303, 70304 05/14/92 Not an emissions reduction measure

Transported Air Pollutants. T 17, CCR, 70500 05/28/92 Not an emissions reduction measure

Air Toxics "Hot Spots" Fee Regulation. T 17, & 26, CCR, 90701, 

90704, 90705 07/09/92 Not an emissions reduction measure

Identification of 1.3 Butadiene as a Toxic Air Contaminant. T 17, 

& 26, CCR, 93000 07/09/92 Not an emissions reduction measure

CFC Refrigerants in Air Conditioning Systems. T 13, CCR, 2500 09/10/92 Air toxics control measure

Criteria for Area Designations. T 17, CCR, 70303.5, 60200-

60203, 60205, 70303 12/10/92 Not an emissions reduction measure
69

Table A-7

Measures Adopted by the California Air Resources Board

That Do Not Address Ozone in the South Coast Nonattainment Area

1990 to 2013

Measure Hearing Date1 Comments

Transport Mitigation Regulations. T 17, CCR, 70600, 70601 03/11/93 Not an emissions reduction measure

Identification of Federal Hazardous Air Pollutants as Toxic Air 

Contaminants. T 17, & 26, CCR, 93001, 39665, 39666 04/08/93 Not an emissions reduction measure

Acid Deposition Fee Regulations. T 17, CCR, 90622, 90621.4 04/08/93 Not an emissions reduction measure

Permit Fee Regulations for Non-vehicular Sources. T 17, CCR, 

90800.4, 90803 04/08/93 Not an emissions reduction measure

Air Toxics "Hot Spots" Emissions Inventory Criteria and 

Guidelines. T 17, & 26, CCR, 93300-93347 06/10/93 Not an emissions reduction measure

Air Toxics "Hot Spots" Fee Regulation. T 17, & 26, CCR, 90700-

90705 07/08/93 Not an emissions reduction measure

Mitigation Transport Pollutants. T 17, CCR, 70500, 70600 08/12/93 Not an emissions reduction measure

Airborne Toxic Control Measure for Perchloroethylene Dry 

Cleaning. T 17, & 26, CCR, 93109, 93110 10/14/93 Air toxics control measure

Conflict of Interest. T 17, CCR, 90500 11/18/93 Not an emissions reduction measure

Criteria for Area Designations. T 17, CCR, 60200-60202, 60204, 

60206, 60208, 70300-70306 11/18/93 Not an emissions reduction measure

Permit Fee Regulations for Non-vehicular Sources. T 17, CCR, 

90800.5, 90803 04/14/94 Not an emissions reduction measure

Air Toxics "Hot Spots" Fee Regulation. T 17, & 26, CCR, 90700-

90705 07/28/94 Not an emissions reduction measure

Area Designations. T 17, CCR, 60201, 60204 11/09/94 Not an emissions reduction measure

Permit Fee Regulations for Non-vehicular Sources. T 17, CCR, 

90800.6, 90803 04/27/95 Not an emissions reduction measure

Employee-Based Trip Reductions Emission Formula. T 13, CCR, 

2330, 2331, 2332 06/29/95 Not an emissions reduction measure

Air Toxics "Hot Spots" Fee Regulation. T 17, CCR, 90700-90705 

and Appendix A 01/25/96 Not an emissions reduction measure

Relaxation of Carbon Monoxide Emission Standards for Utility

Engines. T 13, CCR, 2403 and incorporating test procedures 01/25/96 Carbon monoxide requirement

Permit Fee Regulations for Non-vehicular Sources. T 17, CCR, 

90803, 90800.7 04/25/96 Not an emissions reduction measure

Basin Boundaries for Agricultural Burning (Mojave Desert, 

South Coast & Salton Sea). T 17, CCR, 60104, 60109, 60114, 

80280, 80311

05/30/96 Not an emissions reduction measure

Regulation Improvement and Repeal. T 17, CCR, 93301-93355, 

Appendix A-E (emissions inventory) 05/30/96 Not an emissions reduction measure
70

Table A-7

Measures Adopted by the California Air Resources Board

That Do Not Address Ozone in the South Coast Nonattainment Area

1990 to 2013

Measure Hearing Date1 Comments

Emissions Inventory Criteria & Guideline Report. T 17, CCR, 

93300.5 07/25/96 Not an emissions reduction measure

Air Toxics "Hot Spots" Fee Regulation. T 17, CCR, 90701-90705 

Appendix A to §§ 90700-90705 09/26/96 Not an emissions reduction measure

Stationary Source Test Methods. T 17, CCR, 94105, 94107, 

94114, 94135, 94141, 94143, 94161 09/26/96 Not an emissions reduction measure

Area Designations. T 17, CCR, 60201-60209 11/21/96 Not an emissions reduction measure

Transport Pollutants. T 17, CCR, 70500, 70600 11/21/96 Not an emissions reduction measure

Identification of Inorganic Lead as Toxic Air Contaminant (TAC). 

T 17, CCR, 93000 04/24/97 Not an emissions reduction measure

Interchangeable Emissions Reduction Credits. T 17, CCR, 91500 05/22/97 Not an emissions reduction measure

Air Toxics "Hot Spots" Fee Regulation. T 17, CCR 90701-90705 

and Appendix A §§ 90700-90705 11/13/97 Not an emissions reduction measure

Area Designations '97 . T 17, CCR, §§ 60201 & 60205 11/13/97 Not an emissions reduction measure

Permit Fee Regulations for Non-vehicular Sources. T 17,CCR 

90800.... 01/29/98 Not an emissions reduction measure

Classifying Minor Violations. T 17, CCR, 60090-60095 04/23/98 Not an emissions reduction measure

Airborne Toxic Control Measure for Chrome Plating. T 17, CCR, 

93102 05/21/98 Not an emissions reduction measure

Identification of Diesel Exhaust as a Toxic Air Contaminant. T 

17, CCR, 93000 08/27/98 Not an emissions reduction measure

Stationary Source Test Methods. T 17, CCR, 94101 - 94104, 

94106, 94108 - 94113, 941T 17 - 94124, 94137 and revision of 

Method 12.

10/22/98 Not an emissions reduction measure

Administrative Hearing Procedures. T 17, CCR, 60040 and 

60075.1-60075.45 10/22/99 Not an emissions reduction measure

Area Designations and Criteria for the National and State 

Ambient Air Quality Standards for Ozone. T 17, CCR, 60301, 

60202, 60205, 60206, 70300-70306, 70303.1

10/22/98 Not an emissions reduction measure

Air Toxics “Hot Spots” Fee Regulations. T 17, CCR, 90701-90705 

and Appendix A 10/22/98 Not an emissions reduction measure

Area Designations for State Ambient Air Quality Standards. T 

17, CCR, 60201 11/18/99 Not an emissions reduction measure

Agricultural Burning Guidelines. T 17 Amendments 80145, 80T 

179, 80100-80102, 80110, 80120, 80130, 80140, 80150, 80155, 

80160, 80T 170, 80180, 80200, 80210, 80230, 80240, 80250, 

80260, 80270, 80280, 80290, 80300, 80310, 80311, 80320, 

80330

03/23/00 Not an emissions reduction measure
71

Table A-7

Measures Adopted by the California Air Resources Board

That Do Not Address Ozone in the South Coast Nonattainment Area

1990 to 2013

Measure Hearing Date1 Comments

Air Toxic Control Measure for Asbestos Containing Serpentine. 

T 17, CCR, 93106 07/20/00 Air toxics control measure

Conflict of Interest Code. T 17, CCR, 95001, 95002, 95005, and 

subchapter 9 09/28/00 Not an emissions reduction measure

Rice Straw Conditional Burn Permit Program. T 17, CCR, 80101, 

80156-80158 09/28/00 Not a South Coast control measure (Sacramento Valley air basin only)

Air Toxics "Hot Spots" Fee Regulations. T 17, CCR, 90705 tables 

1, 2, 3a, 3b, 3c, and 4 10/26/00 Not an emissions reduction measure

Area Designations for the State Ambient Air Quality Standard 

for Ozone. T 17, CCR, 60201 11/16/00 Not an emissions reduction measure

Ozone Transport Assessment. T 17, CCR, 70500 & 70600 04/26/01 Not an emissions reduction measure

Air Toxics "Hot Spots" Fee Regulation. T 17, CCR, 90700-90705 10/25/01 Not an emissions reduction measure

Review of California Ambient Air Quality Standards for 

Particulate Matter and Sulfates. T 17, CCR, 70100,70200, and 

70100.1

06/20/02 Not an emissions reduction measure

Administrative Civil Penalties Program. T 17, CCR, 60065.1 -

60065.45 and 60075.1 - 60075.45 12/12/02 Not an emissions reduction measure

Ozone Transport Mitigation Regulations. T 17, CCR, 70600 and 

70601 05/22/03 Not an emissions reduction measure

Permit Fee Regulations for Non-vehicular Sources. T 17, CCR, 

90800.75, 90800.9, 90804, 90800.8, 90801, 90802, and 90803 07/24/03 Not an emissions reduction measure

Area Designation Criteria and Area Designations for State PM2.5

and Ozone Ambient Air Quality Standards. T 17, CCR, 60201, 

60202, 60205, 60210

01/22/04 Not an emissions reduction measure

Permit Fee Regulations for Non-vehicular Sources. T17, CCR 

90805 and 90806; and 90800.8 and 90803 11/18/04 Not an emissions reduction measure

Area Designations. T 17, CCR, 60201, 60202, 60205, 60210 01/20/05 Not an emissions reduction measure

State Ambient Air Quality Standard for Ozone. T 17, CCR, 

70100, 70100.1, and 70200 04/28/05 Not an emissions reduction measure

Definition of Large Confined Animal Facility. T 17, CCR 86500 

and 86501 06/23/05 Not an emissions reduction measure

Identification of Tobacco Smoke as a Toxic Air Contaminant. T 

17, CCR, 93000 01/26/06 Not an emissions reduction measure

Airborne Toxic Control Measure for Cruise Ships and OceanGoing Ships Onboard Incineration (amendments). T 17, CCR, 

93119

11/16/06 Air toxics control measure
72

Table A-7

Measures Adopted by the California Air Resources Board

That Do Not Address Ozone in the South Coast Nonattainment Area

1990 to 2013

Measure Hearing Date1 Comments

Air Toxics "Hot Spots" Emissions Inventory Criteria and 

Guidelines. T 17, CCR, 93300.5 and document incorporated by 

reference

11/16/06 Not an emissions reduction measure

Area Designations for State Ambient Air Quality Standards. T 

17, CCR, 60201, 60202, 60205, & 60210 11/16/06 Not an emissions reduction measure

Perchloroethylene Dry Cleaning Operations T17, CCR, 93109, 

93109.1, and 93109.2. 1/25/07 Air toxics control measure

State Ambient Air Quality Standard for Nitrogen Dioxide T17, 

CCR, 70100, 70100.1 and 70200, ARB document "Air Monitoring 

Quality Assurance Manual Volume IV”, which is incorporated by 

reference in 70100.1.

2/22/07 Not an emissions reduction measure

Formaldehyde Emissions from Composite Wood Products

T17, CCR, 93120-93120.12

4/26/07 Air toxics control measure

Smog Index Labels Regulations T13, CCR, 1961, 1965 6/21/07 Not an emissions reduction measure

Greenhouse Gas Emissions Mandatory Reporting T17, CCR, 

95100, 95101, 95102, 95103, 95104, 95105, 95106, 95107, 

95108, 95109, 95110, 95111, 95112, 95113, 95114, 95115, 

95125, 95130, 95131, 95132, 95133, and Appendix A

12/06/07 Not an emissions reduction measure

Small Containers of Automotive Refrigerant 1/22/09 Not an emissions reduction measure

Semiconductor Operations 2/26/09 Air toxics control measure

Sulfur Hexafluoride Emissions in Non-Semiconductor and NonUtility Applications 2/26/09 Not an emissions reduction measure

Methane Emissions from Municipal Solid Waste Landfills 6/25-26/09 Not an emissions reduction measure

AB 32 Cost of Implementation Fee Regulation 9/24/09 Not an emissions reduction measure

Tables of Maximum Incremental Reactivity Values 11/3/09 Not an emissions reduction measure

High Global Warming Potential Refrigerants for Stationary 

Sources 12/9/09 Not an emissions reduction measure

Indoor Air Cleaning Devices 12/9/09 Not an emissions reduction measure

Sulfur Hexafluoride Emissions from Gas Insulated Switchgear 2/25/10 Not an emissions reduction measure

Area Designations for State Ambient Air Quality Standards 3/25/10 Not an emissions reduction measure

Energy Efficiency and Co-Benefits Assessment of Large 

Industrial Facilities 7/22/10 Not an emissions reduction measure
73

Table A-7

Measures Adopted by the California Air Resources Board

That Do Not Address Ozone in the South Coast Nonattainment Area

1990 to 2013

Measure Hearing Date1 Comments

Airborne Toxic Control Measure for Stationary Compression 

Ignition Engines 10/21/10 Not an emissions reduction measure

California Cap-and-Trade Program 12/16/10 Not an emissions reduction measure

Mandatory Reporting for Greenhouse Gas Emissions 12/16/10 Not an emissions reduction measure

Area Designations for State Ambient Air Quality Standards 6/23/11 Not an emissions reduction measure

AB 32 Cost of Implementation Fee Regulation 10/20/11 Not an emissions reduction measure

Cap and Trade Regulation 6/28/12 Not an emissions reduction measure

Mandatory Reporting, Fee Regulation and Cap and Trade 2012 9/20/12 Not an emissions reduction measure

Area Designations (2013 Amendments to

Area Designations for State Ambient Air

Quality Standards)

N/A Not an emissions reduction measure

Cap and Trade 10/24/13 Not an emissions reduction measure

Mandatory Reporting 10/24/13 Not an emissions reduction measure

Mobile Agricultural Equipment. T13, CCR, 2428. 10/24/13

An administrative mechanism to 

ensure that incentive funded projects 

implemented in the San Joaquin 

Valley and using Carl Moyer Program 

Guidelines are surplus, quantifiable, 

enforceable, and permanent, and 

result in emission reductions that are 

eligible for SIP credit. This measure 

has not yet been approved by CA’s 

OAL.
74

VI. Air Quality Modeling

1. Requirements for Air Quality Modeling 

CAA section 182(c)(2)(A) requires states with ozone nonattainment areas classified as 

serious or above to submit plans that demonstrate attainment of the applicable standard as 

expeditiously as practicable but no later than the applicable attainment date. The attainment 

demonstration must be based on photochemical grid modeling or another analytical method 

determined by the EPA Administrator to be at least as effective. Under the ozone 

implementation rule (40 CFR § 51.908; see 70 FR 71612 at 71624), the attainment 

demonstration is due within three years of the area’s designation as nonattainment and should 

include technical analyses to locate and identify sources of emissions that are causing violations 

of the 8-hour ozone standard within the nonattainment area.

Air quality modeling is used to establish emissions attainment targets, the combination of 

emissions of ozone precursors that the area can accommodate without exceeding the NAAQS, 

and to assess whether the proposed control strategy will result in attainment of the NAAQS. Air

quality modeling is performed for a base year and compared to air quality monitoring data in 

order to evaluate model performance. Once the performance is determined to be acceptable, 

future year changes to the emissions inventory are simulated to determine the relationship 

between emissions reductions and changes in ambient air quality, and to show that the 

emission reductions are sufficient for attainment of the standard. The procedures for modeling 

ozone as part of an attainment SIP are contained in EPA’s “Guidance on the Use of Models and 

Other Analyses for Demonstrating Attainment of Air Quality Goals for Ozone, PM2.5, and 

Regional Haze.” EPA-454/B-07-002, April 20072(“Guidance”). 

2. Modeling in the Sacramento 2013 Ozone Plan

The Central California Ozone Study (CCOS) comprises a field study data collection and 

processing, air quality modeling, and the continuing data analysis of ozone formation in Central 

California and neighboring areas. CCOS is a multi-million dollar cooperative effort involving 

California cities, State and local and air pollution control agencies, federal agencies, industry 

groups, academics, and contractors. Meteorological and air quality field study data for CCOS 

were collected during the 4 months from June through October 2000 and included five severalday intensive monitoring periods. The CCOS ozone episode selected for modeling was July 29-

August 2, 2000. CARB also modeled July 9-13, 1999, using routinely available meteorological 

and air quality data. CARB modeled these with the Comprehensive Air Quality Model with 

Extensions (CAMx), with meteorological fields from the Mesoscale Model version 5 (MM5).

The 2013 Ozone Plan’s air quality modeling is discussed in the Executive Summary (p.1-5, 

pdf p.22), Chapter 4 “8-hour Ozone Air Quality Trends”, Chapter 6 “Air Quality Modeling 

Analysis” , and Chapter 10 “Weight-of-Evidence Determination”, with detailed descriptions and 

results in Appendix B “Photochemical Modeling.” An additional Plan component is the CARB 

 

2 Available at: http://www.epa.gov/ttn/scram/guidance/guide/final-03-pm-rh-guidance.pdf).
75

Staff Report,3 which includes Appendix B “Attainment Demonstration Analysis” and Appendix F 

“Unmonitored Area Analysis”. The 2013 Ozone Plan, Appendix B (p. B-1, pdf p.22) references 

modeling documents including a Modeling Protocol.

4

The 2013 Ozone Plan uses the same model results, including modeling protocol, air quality 

model selection, episode selection, model domain and spatial resolution, boundary and initial 

conditions, meteorological model selection and set-up, and emission inventory set-up as was 

used in the 2007 San Joaquin Valley (SJV) Ozone Plan5 which was approved by EPA on March 1, 

2012 (77 FR 12652). The 2007 SJV Ozone Plan also includes an extensive meteorological and air 

quality model performance evaluation over the entire modeling domain. 

a. Conceptual Description 

A “conceptual description” is a qualitative way of characterizing the nature of an area’s 

nonattainment or regional haze problem. It can be helpful in identifying potential stakeholders 

and for developing a modeling protocol; it could influence the choice of air quality model, 

modeling domain, grid cell size, priorities for quality assuring and refining emissions estimates, 

and the choice of initial diagnostic tests to identify potentially effective control strategies. In 

general, a conceptual description is useful for helping a state or tribe identify priorities and 

allocate resources in performing a modeled demonstration. 

The Guidance (pp. 126-128) lists examples of key components of such a description: local 

vs. regional nonattainment problem; vertical and horizontal extent of high concentrations; 

characteristic spatial patterns; monitored violations at locations subject to mesoscale wind 

patterns (e.g., at a coastline) differing from the general wind flow; recent changes in precursor 

emissions in or near the nonattainment area; trends in design values or other air quality 

indicators that have accompanied emissions changes; spatial pattern to the trends; past 

modeling results; distinctive meteorological measurements coinciding with exceedances.

2013 Ozone Plan’s conceptual description has components in Appendix B (pp. B-2 – B-3) 

and in section 1.3 of the Modeling Protocol (pp. 6-8). These Plan portions note phenomena 

conducive to high ozone concentrations in the Sacramento Valley. The Modeling Protocol 

notes that weather conditions leading to high ozone levels in the San Joaquin Valley include 

large-scale, high-pressure systems that develop over the Western United States, low wind 

speeds, and high temperatures. These conditions occur frequently in the San Joaquin Valley 

between May and September, and may persist for several days. This characterization also 

applies to ozone formation in the Sacramento Valley. As support, the 2013 Ozone Plan notes 

500 mb heights at a fixed location, an indicator of behavior showing the sequence of pressure 

ridges and troughs, and the 850 mb temperature, a measure of large-scale subsidence which 

produces stable layers in the atmosphere and limits vertical dispersion of air pollutants, have 

historically correlated well with ozone formation over California.

 

3

 “Staff Report on Proposed Revisions to the 8-Hour Ozone State Implementation Plan for the Sacramento Federal 

Nonattainment Area”, State of California Air Resources Board, Release Date: October 22, 2013.

4

“Photochemical Modeling Protocol for Developing Strategies to Attain the Federal 8-hour Ozone Air Quality

Standard in Central California”, California Air Resources Board, May 22, 2007, this document is located at 

http://eos.arb.ca.gov/eos/SIP _Modeling/ and in the docket associated with this action.

5 2007 Ozone Plan, San Joaquin Valley Air Pollution Control District, dated April 30, 2007.
76

Additional flow patterns affecting ozone levels in the Sacramento Valley include transport between 

the Sacramento Valley, San Joaquin Valley and Bay Area as well as within valley up-valley, down-valley 

diurnal flows. The 2013 Ozone Plan description of the episodes modeled provide additional information 

on these conditions leading to high ozone. 

EPA finds that the conceptual description of the ozone problem in Sacramento provided in 

the Plan forms an adequate basis for the development of the modeling protocol and analysis 

work.

b. Modeling Protocol

A modeling protocol should detail and formalize the procedures for conducting all phases of 

the modeling study, such as describing the background and objectives for the study, creating a 

schedule and organizational structure for the study, developing the input data, conducting 

model performance evaluations, interpreting modeling results, describing procedures for using 

the model to demonstrate whether proposed strategies are sufficient to attain the NAAQS 

and/or regional haze goals, and producing documentation to be submitted for EPA Regional 

Office review and approval. The Guidance (p. 134) lists topics to be addressed in the modeling 

protocol:

1. Overview of Modeling/Analysis Project

a. Management structure

b. Technical committees or other communication procedures to be used

c. Participating organizations

d. Schedule for completion of attainment demonstration or uniform rate of 

progress analyses

e. Description of the conceptual model for the nonattainment area (or Class I 

area(s))

2. Model and Modeling Inputs

a. Rationale for the selection of air quality, meteorological, and emissions models

b. Modeling domain

c. Horizontal and vertical resolution

d. Specification of initial and boundary conditions

e. Episode selection

f. Description of meteorological model setup

g. Development of emissions inputs

h. Geographic area identified for application of the attainment test(s)

i. Methods used to quality assure emissions, meteorological, and other model 

inputs

3. Model Performance Evaluation

a. Describe ambient data base

b. List evaluation procedures

c. Identify possible diagnostic testing that could be used to improve model 

performance
77

4. Supplemental Analyses

a. List additional analyses to be completed to corroborate the model attainment 

test

b. Outline plans for conducting a weight of evidence determination, should it be 

necessary

5. Procedural Requirements

a. Identify how modeling and other analyses will be archived and documented

b. Identify specific deliverables to EPA Regional Office

2013 Ozone Plan’s modeling protocol (“Protocol”) is referenced in the Staff Report, as noted 

above. 

The Protocol covers the most important topics recommended in the Guidance, as discussed 

following subsections. EPA finds the protocol is adequate for developing the attainment 

demonstration.

c. Air Quality Model Selection

A model should meet several general criteria for it to be a candidate for consideration in an 

attainment demonstration. Guidance, p. 136. These general criteria are consistent with 

requirements in 40 CFR § 51.112 and 40 CFR part 51, Appendix W. The Guidance does not 

recommend a specific model for use in the attainment demonstration. At present, there is no 

single model which has been extensively tested and shown to be clearly superior than its 

alternatives. Thus, 40 CFR Part 51 Appendix W does not identify a “preferred model” for use in 

attainment demonstrations of the ozone NAAQS. Based on the language in Appendix W, models 

used for these purposes should meet requirements for “alternative models”. 

States/Tribes should use a non-proprietary model, which is a model whose source code is 

available for free (or for a “reasonable” cost). Furthermore, the user must be able to revise the 

code to perform diagnostic analyses and/or to improve the model’s ability to describe 

observations in a credible manner. The model should meet several additional prerequisites to 

be used to support an attainment demonstration:

1. revised in response to a scientific peer review;

2. appropriate for the specific application on a theoretical basis;

3. used with a data base which is adequate to support its application;

4. shown to have performed well in past ozone or PM modeling applications (or if it is the 

first application, then the State should note why it believes the new model is expected 

to perform sufficiently); and

5. applied consistently with the protocol on methods and procedures.
78

2013 Ozone Plan’s Model selection is discussed in the Protocol (p. 20). CARB considered the 

SAQM6, CMAQ7, and CAMx8 models. The SARMAP photochemical mechanism and numerical 

transport schemes were out of date, and costly to update. CMAQ was considered a viable 

option, though with limited application to California. CAMx was selected because it was felt to 

be faster running, it incorporates several probing tools (DDM and PA; see discussion of 

diagnostic evaluation in Air Quality Model Performance subsection below; CMAQ did not 

include these at that time), and the initial investigation showed it to have greater flexibility and 

ease of set up, as well as better performance based on limited testing.

Any of the three candidate models would have been acceptable. CAMx is explicitly 

mentioned in EPA Guidance (Table 13.1, p. 139), and EPA finds that CAMx is an adequate model 

for the ozone attainment demonstration. 

2013 Ozone Plan’s chemical mechanism selection was the California Statewide Air Pollution 

Research Center (SAPRC). The Protocol noted (p. 31) that SAPRC was the most up-to-date 

mechanism available at the time, has been thoroughly peer-reviewed, and has often been 

applied in California.

SAPRC is cited multiple times in EPA Guidance Appendix B summarizing model performance 

evaluations (p. 243), and CARB provides several good rationales for using it. EPA finds it is an 

adequate chemical mechanism for use in the attainment demonstration modeling.

d. Episode Selection

The Guidance discusses several criteria for selecting time periods to model (p. 140-147). 

Experience has shown that evaluation ozone response to control strategies should rely on 

modeling of full synoptic cycles, preferably including ramp-up and ramp-down days. It is 

desirable to include a variety of meteorological conditions (regimes or episode types), 

concentrations near the area’s design value, periods with extensive meteorological and air 

quality databases, and a sufficient number of days so that the modeled attainment test may be 

applied over multiple days. Episode types may be identified using qualitative procedures such 

as reviewing weather maps and wind patterns, or more quantitative procedures, such as 

Classification and Regression Tree (CART) analysis or a principal component analysis (PCA). 

2013 Ozone Plan’s episode selection is discussed in Chapter 6, Appendix B and in the 

Protocol. The chosen July 29-August 2, 2000 episode coincided with one of five intensive 

operation periods of the 2000 CCOS field study. Meteorological and air quality characteristics of 

this episode are detailed starting at Chapter 6, p.6-5 (pdf p.79) and Appendix B, p.B-4 (pdf 

p.24). While ozone-conducive conditions were prevalent throughout the episode, the highest 

readings in the Sacramento region occurred on August 1st at Sloughhouse (108 ppb), located in 

the southern part of the nonattainment area and on August 2nd at Auburn (107 ppbv) and Grass 

Valley (113 ppb), located in the northeast part of the nonattainment area. 

 

6

 SAQM: SARMAP Air Quality Model, where SARMAP stands for SJV/AUSPEX Regional Modeling Adaptation 

Project (an emissions inventory and modeling system), and in turn AUSPEX stands for Atmospheric Utility Signature 

Prediction Experiment (a field study).

7

 CMAQ: Community Multiscale Air Quality Modeling System, developed by EPA.

8

 CAMx: Comprehensive Air Quality Model with Extensions, developed by ENVIRON Corporation.
79

The July 9-13, 1999 period was another period chosen for modeling as it was particularly 

conducive to ozone formation; though it had only routine meteorological and air quality data 

were available for it. Appendix B, p. B-5 (pdf p. 25). High surface 8-hour ozone readings were 

widespread throughout the Sacramento region during the period, reaching a maximum at 

Folsom (129 ppb) on July 10th. 

Four episodes were originally under consideration (the above two, September 17-21, 2000, 

and August 8-17, 2002), but due to time and resource constraints the decision was made to 

focus on the July 2000 and July 1999 episodes, especially after initial modeling of the 

September 2000 episode showed poor performance. Appendix B, p. B-2 (pdf p.22); Protocol p. 

11.

Both of the modeled episodes displayed concentrations near the monitors’ ozone design 

values and had meteorological features typical of high ozone and transport patterns 

characteristic of Central California.

EPA finds that the chosen episodes provide an adequate basis for the attainment 

demonstration.

e. Model Domain and Spatial Resolution 

The model domain is chosen based the nature of the area’s ozone problem and the scale of 

the emissions that affect the nonattainment area and may be subject to control strategies. 

Isolated nonattainment areas that are not affected by regional transport of ozone and its 

precursors may be able to use a relatively small domain. Some areas of the western U.S. may 

fall into this category. The modeling domain should be designed so that all major upwind 

source areas that influence the downwind nonattainment area are included in the modeling 

domain. The influence of boundary conditions should be minimized to the extent possible.

Guidance p. 153 (pdf. 162).

For the horizontal resolution of the coarse portions of regional grids, we recommend a grid 

cell size of 12 km if feasible, but not larger than 36 km. For urban and fine scale portions of 

nested regional grids, it may be desirable to use grid cells about 4 km, but not larger than 12 

km. States/Tribes should examine past model applications and data analyses for their area 

when choosing the fine grid resolution. Past model applications and data analyses may help 

determine whether a grid cell size as small as 4 km (or smaller) is necessary for a particular 

area. Model performance and the relative response to emissions controls should be considered 

in the decision. States/Tribes should consider diagnostic tests to assess the difference in model 

performance and response from varying model grid resolution, particularly in oxidant-limited 

areas. All ozone monitor locations within a nonattainment area should ordinarily be placed 

within the fine scale portion of a nested regional grid if nested models are used. Guidance p. 

157 (pdf. 166).

Vertical resolution chosen will vary depending on the application. There is no correct 

minimum number of vertical layers needed in an attainment demonstration. Greater resolution 

allows more precise estimation of mixing heights and avoids unrealistic step increases in 

mixing; alignment with the layers in the meteorological model can affect accuracy; the lowest 

layer should generally by no more than 50 meters thick; resolution above the boundary layer 

can generally be coarser. Recent applications of one atmosphere models (with model tops at 
80

100 millibars) have used anywhere from 12 to 21 vertical layers with 8-15 layers approximately 

within the boundary layer (below 2500 m) and 4-6 layers above the Planetary Boundary Layer 

(PBL). Guidance p. 159 (pdf. 168).

2013 Ozone Plan’s modeling domain is shown in Figure 6-1 of Chapter 6 (p. 6-5, pdf p.79), 

and was chosen with the objective of including all of the Central Valley of California and upwind 

areas. It includes most of California south of Mt. Shasta and north of Los Angeles, and extends 

from Pacific Ocean to the central Mojave Desert and Nevada. The grid horizontal resolution 

used is 4 km; the full grid is 185 x 185 cells. Protocol p. 26. The July 2000 episode used 20 

layers, while the July 1999 episode used 16 layers. Protocol p. 27.

Given the topography of the Sacramento Valley, which has bounding mountains to the east, 

north, and west but which is open to the south and therefore subject to transport of ozone and 

emissions of ozone precursors from the San Joaquin Valley and from the San Francisco Bay 

Area, the model domain encompasses the Sacramento nonattainment area as well as areas 

likely to contribute to its ozone problem. The boundaries are in rural northern California, the 

Nevada desert, mountains to the south, over the Pacific ocean, all areas with low emissions and 

so the model boundary conditions are unlikely to have a substantial effect on the simulations. 

The 4 km grid horizontal resolution used is considerably more refined than the 12 km Guidance 

recommendation, and the number of layers is consistent with the range in the Guidance. EPA 

finds the chosen modeling domain is adequate for the attainment demonstration.

Sacramento Modeling Domain

Source: Protocol, Figure 4.2, p. 27 .

f. Initial and Boundary Conditions 
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If there is no larger regional model application available, then it is recommended that 

background boundary conditions be used to specify initial and boundary concentrations for the 

attainment demonstration modeling. However, concentration fields derived from a larger 

domain regional or global chemistry model (i.e. nesting approach) is considered more credible 

than the assumption of static concentrations, since the pollutant concentration fields reflect 

simulated atmospheric chemical and physical processes driven by assimilated meteorological 

observations. Therefore, we recommend using boundary conditions derived from a regional or 

global scale model, whenever possible. We recommend using a “ramp-up” period by beginning 

a simulation prior to a period of interest to diminish the importance of initial conditions; we 

recommend a ramp-up period of at least 2-3 days for ozone. Diagnostic testing which indicates 

a large impact on the model results from initial or boundary conditions may indicate that the 

domain is not large enough or the ramp-up period is too short. In either case, it should 

generally be assumed that initial and boundary conditions do not change in the future. The use 

of altered initial or boundary conditions in the future year should be documented and justified. 

Guidance p. 153 (pdf. 162).

2013 Ozone Plan’s initial and boundary conditions are discussed starting at Protocol p. 36. 

Generally defaults from earlier EPA guidance document “Guideline for the Regulatory 

Application of the Urban Airshed Model”, EPA, (EPA-450/4-91-013, July 1991) were used as a 

starting point, but these were checked against available ozonesonde data and aircraft 

measurements. Final decisions on the initial and boundary conditions were made jointly by 

CARB, the Bay Area Air Quality Management District, the San Joaquin Valley Air Pollution 

Control District, and the Sacramento Municipal Air Quality Management District. Protocol, p. 

36; table of values on following page. The boundary conditions were left unchanged for 

simulation of future years, consistent with the EPA Guidance recommendation. A two-day 

“ramp-up” period was used for both episodes, to minimize the impact of uncertain initial 

conditions. Protocol p. 39.

EPA finds that the procedure used to determine boundary and initial conditions is adequate 

for the attainment demonstration.

g. Meteorological Model Selection and Setup

Generally a standard meteorological model should be used. The recommended approach 

for generating the meteorological data needed to conduct the attainment demonstration is to 

apply dynamic meteorological models with four dimensional data assimilation (FDDA). These 

models use the fundamental equations of momentum, thermodynamics, and moisture to 

determine the evolution of specific meteorological variables from a given initial state. When 

modeling past events, the use of data assimilation helps to “nudge” solutions so that they do 

not diverge greatly from the actual observed meteorological fields. A major benefit of using 

dynamic meteorological models is that they provide a way of consistently characterizing 

meteorological conditions at times and locations where observations do not exist. Examples of 

frequently used meteorological models are listed below (Guidance p. 160 (pdf. 169)):

 The Penn State University / National Center for Atmospheric Research 

Mesoscale Model version 5 (MM5)

 The Regional Atmospheric Modeling System (RAMS)
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 The Weather Research and Forecasting Model (WRF)

A description of the methods used to generate the meteorological fields should be included 

in the modeling protocol. In cases in which standard meteorological modeling (e.g. MM5, 

RAMS, or WRF in a retrospective analysis mode) is not used, it is recommended that a detailed 

description of the technique that is used to generate the three-dimensional meteorological 

fields be shared with the appropriate EPA regional office(s) prior to conducting the air quality 

modeling analysis. Guidance p. 161 (pdf. 170).

The meteorological model domain must be large enough to contain the photochemical 

modeling domain. It is expected that most attainment demonstrations will cover large areas 

and use nested grids. The outermost grid should capture all upwind areas that can reasonably 

be expected to influence local concentrations of ozone, and/or PM2.5. One should extend the 

grid 3 to 6 cells beyond the domains of each air quality modeling grid to avoid boundary effects. 

EPA recommends that the dynamic meteorological models use the same grid resolution as 

desired for the air quality model applications. However, poor meteorological model 

performance or the extra costs incurred may not warrant finer resolution; in these specific 

situations it is recommended that the air quality model application use available results from 

meteorological models on the next coarser scale. Guidance p. 161 (pdf. 170).

Physics options in meteorological models allow users to select how a given feature will be 

simulated. For example, there may be several options for specifying the planetary boundary 

layer scheme or the cumulus parameterization. In many situations, the “optimal” configuration 

cannot be determined without performing an initial series of sensitivity tests which consider 

various combinations of physics options over specific time periods and regions. While these 

tests may not ultimately conclude that any one configuration is clearly superior at all times and 

in all areas, it is recommended that these sensitivity tests be completed, as they should lead to 

a modeling analysis that is best-suited for the domain and period being simulated. Typically, the 

model configuration which yields predictions that provide the best statistical match with 

observed data over the most cases (episodes, regions, etc.) is the one that should be chosen, 

although other more qualitative information can also be considered. Additionally, model 

configurations should be designed to account for the pollutants and time periods that are of 

most interest. Guidance p. 162 (pdf. 171).

2013 Ozone Plan’s meteorological model selection is discussed starting at Protocol p. 19. 

CARB considered the NCEP Eta model9, as well as RAMS, MM5, and WRF. The Eta model has 

mainly been used for weather forecasting and not as a research tool, whereas RAMS showed 

some poor characteristics when used for air quality modeling by the Bay Area Air Quality 

Management District, and WRF has been little tested for SIP air quality modeling. MM5, on the 

other hand has been used extensively for SIPs, including by CARB, and so was chosen as the 

meteorological model.

2013 Ozone Plan’s meteorological model domain consists of three nested grids. The 

innermost is just larger than the photochemical domain that it supplies meteorological fields to; 

it has 189 x 189 cells, each 4 km on a side. This is nested within a 12 km resolution grid covering 

the entire State of California, and that in turn is nested within an outer 36 km grid that 

 

9

 National Centers for Environmental Prediction, Eta Model (Greek eta, η, a height coordinate based on pressure).
83

stretches inland to New Mexico and a similar distance west over the Pacific Ocean, and that 

extends from southern Canada to the tip of the Baja California peninsula. Protocol p. 23. 

Boundary conditions for the inner two grids are derived from the output of the next larger grid 

each is nested within. The July 2000 episode used 50 vertical layers, and the July 1999 episode 

used 30 layers. FDDA was used only for the outer two grids; data from some 300 surface and 25 

upper air meteorological stations was available for FDDA for the year 2000 CCOS episode.

Sacramento Valley Meteorological Domain

Source: Protocol, Figure 4.1, p. 23.

2013 Ozone Plan’s physics options are listed starting at Protocol p. 29, such as Kain-Fritsch 

cumulus parameterization for the outer grids (2000 episode only). The Protocol also states that 

many combinations of model options were tested before settling on the final choices. Some of 

these options are discussed in the following subsection on meteorological model performance.

EPA finds that the meteorological model choice and setup are consistent with the Guidance, 

and are adequate for use in the attainment demonstration modeling.

h. Meteorological Model Performance
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EPA recommends that States/Tribes devote appropriate effort to the process of evaluating 

the meteorological inputs to the air quality model as we believe good meteorological model 

performance will yield more confidence in predictions from the air quality model. This 

evaluation should determine if the meteorological model output fields represent a reasonable 

approximation of the actual meteorology that occurred during the modeling period. This can be 

done via an operational evaluation (i.e., quantitative, statistical, and graphical comparisons). A 

second objective of the evaluation should be to identify and quantify the existing biases and 

errors in the meteorological predictions in order to allow for an downstream assessment of 

how the air quality modeling results are affected by issues associated with the meteorological 

data. This can be done via a more phenomenological assessment, i.e., generally qualitative 

comparisons of observed features vs. their depiction in the model data. Guidance p. 163 (pdf. 

172).

Operational Evaluation: The operational evaluation results should focus on the values and 

distributions of specific meteorological parameters as paired with and compared to observed 

data. It is recommended that the observation - model matching be paired as closely as possible 

in space and time. Typical statistical comparisons of the key meteorological parameters will 

include: comparisons of the means, mean bias, mean normalized bias, mean absolute error, 

mean absolute normalized error, root mean square error (systematic and unsystematic), and an 

index of agreement. For modeling exercises over large domains and entire ozone seasons or 

years, it is recommended that the operational evaluation be broken down into individual 

segments such as geographic sub-regions and/or months/seasons to allow for a more 

comprehensive assessment of the meteorological strengths and weaknesses. 

Phenomenological Evaluation: Within the conceptual description of a particular modeling 

exercise, it is recommended that the specific meteorological parameters that influence air 

quality be identified and qualitatively ranked in importance. When evaluating meteorological 

models or any other source of meteorological data, the focus of the phenomenological 

evaluation should be on those specific meteorological phenomena that are thought to strongly 

affect air pollution formation and transport within the scope of a specific analysis. It is expected 

that this event-oriented evaluation will need to summarize model performance in terms of 

statistical metrics such as probability of detection and false alarm rate. As an example of a 

potential phenomenological analysis, many regional air quality modeling exercises attempt to 

assess the effects of transport of emissions from one area to a downwind area with an intent to 

establish source-receptor relationships. For these types of modeling analyses, accurate 

transport wind trajectories are needed to properly establish these source-receptor linkages. In 

this type of model application, a useful event-based meteorological evaluation would be to 

compare model-derived trajectories versus those based on ambient data to determine what 

error distance can be associated with the model fields.

2013 Ozone Plan’s Meteorological Model Performance over the modeling domain shown 

above was evaluated in depth as part of the San Joaquin 2007 Ozone Plan (See Appendix F p. F61) which we approved on March 1, 2012 (77 FR 12652). Performance statistics are presented 

in graphical form for various sub-regions over the domain. They generally show results 

averaged over multiple sites within each sub-region, and are only a subset of the many sitespecific plots that were examined during development of the meteorological modeling. There 

are a) time series plots over the days of each episode showing observed and simulated wind 
85

speed, wind direction, or temperature, b) scatter plots of wind speed gross error against wind 

speed root mean square error, and c) scatter plots of temperature gross error against 

temperature bias. The scatter plots include lines indicating performance benchmarks. The plots 

are provided for the 1999 episode staring at p. F-67 (pdf. 69), and for the 2000 episode at p. F79 (pdf. 81). Finally, maps of horizontal wind vectors are included for the 2000 episode with 

various physics options, starting at p. F-89 (pdf. 91).

For the 1999 episode, statistics and plots were prepared for three different MM5 runs: 

without FDDA, with FDDA, and with FDDA but excluding data from short (2 meter) 

meteorological towers. CARB notes that FDDA improved results, but excluding the 2 meter data 

made little difference. The regular FDDA run of MM5 was used for the air quality modeling. 

CARB provided summaries of some of the results: For the Bay Area region, wind speeds were 

generally underpredicted and temperatures showed good agreement with observations, while 

for the Sacramento region wind speed performance was good ,and temperatures tended to be 

underpredicted during the day and overpredicted during the morning. For the Central, 

Southern, and Northern San Joaquin regions, winds tended to be underpredicted some, and 

again temperatures tended to be underpredicted during the day and overpredicted during the 

morning. The simulations were the result of substantial effort by the CARB and the Bay Area Air 

Quality Management District, and though not ideal, were deemed acceptable for use in 

modeling. See results summary staring at p. F-65 (pdf. 67).

For the 2000 episode, statistics and plots were prepared for six different MM5 runs: four 

produced by the National Oceanic and Atmospheric Administration (NOAA) with alternative 

land-surface model physics options and roughness lengths, and two produced by CARB, with 

and without FDDA. These runs had various choice of soil physics and boundary layer 

parameterizations. After noting the variability of results for different locations, CARB states that 

the NOAA runs with increase roughness length tended to worsen performance for temperature. 

CARB also states that all of the FDDA runs did fairly well for the wind field, but for temperature 

the initial NOAA run performed the best. Although for the Angiola temperature time series 

included in the documentation, the CARB runs look better. Figure 1-12(a), p. F-87 (pdf. 89). The 

initial NOAA run of MM5 was used for the air quality modeling. See results summary staring at 

p. F-77 (pdf. 79).

CARB states that, in addition to these operational evaluation analyses, qualitative 

performance analyses of the meteorological model were undertaken. These included 

comparison of modeled and observed wind patterns, to ensure that the model is reproduce 

phenomena known to occur in the SJV, such as the sea breeze, the Fresno eddy, and slope and 

drainage flows. They also included comparison of wind profiler observations with the simulated 

wind field at the profiler location, and of upper air observations with simulated mixing layer 

height. p. F-64 (pdf. 66).

The operational evaluation undertaken by CARB is consistent with the recommendations in 

the EPA Guidance, in terms of meteorological parameters examined, statistics computed, and 

the consideration of differing sub-regions within the model domain. The CARB qualitative 

analyses mentioned above are also consistent with the EPA Guidance recommendations for a 

phenomenological evaluation. EPA finds that the meteorological model evaluation and the 
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model performance are adequate to support the air quality model for the attainment 

demonstration.

i. Emission Inventory

Air quality modeling requires emission inputs for base case, baseline, and future modeling 

years. Preparation of emissions data for air quality models for the base and future years 

requires several steps. First, States and Tribes need to compile base-year inventories for their 

modeling region (e.g., the States and Tribes in the modeling grid). For ozone model 

applications, emission inventories should include a complete accounting of anthropogenic and 

biogenic VOC (speciated), NOx, and CO. Second, modelers must collect “ancillary data” 

associated with the inventories, which prescribes the spatial, temporal, and chemical speciation 

information about the emission inventory. Third, modelers use the ancillary data for “emissions 

modeling”. Emissions models spatially, temporally, chemically, and vertically allocate emission 

inventories to the resolution needed by air quality models. Fourth, modelers must collect data 

on growth rates and existing control programs for use in projecting the base year emission 

inventories to the future year, and then use an emissions model to prepare that future year 

inventory data for input to the air quality model. Fifth, emissions inventories that reflect the 

emissions reductions needed for attainment will have to be prepared for air quality modeling.

2013 Ozone Plan’s emissions inputs are discussed starting at Protocol p. 40 start. The 

Protocol provides description of the modeling inventory preparation process. The topics 

covered include: quality assurance checks, the effects of growth and of the application of 

control measures, temporally resolved emissions for some larger point sources, temporal 

allocation of annual emissions to account for monthly and weekly variations, diurnal profiles of 

emissions, temperature dependence of emissions from some source types, California-specific 

vehicle emissions from the EMFAC model, a summary of some of the algorithms and inputs to 

the BEIGIS biogenic emissions model, spatial allocation of the various source category emissions 

into model grid squares (via known coordinates for point sources and for links of the roadway 

network, land use and demographic spatial surrogates for area source categories), speciation of 

VOC emissions into particular chemical species needed by the photochemical model’s chemical 

mechanism, and speciation of NOx into NO and NO2.

The Protocol’s description of the emissions input process is fairly comprehensive, and 

covers all the key topics in the EPA Guidance. EPA finds that the emission inventory prepared 

for input to the air quality model is adequate to support the attainment demonstration.

j. Air Quality Model Performance 

Model performance can be assessed in terms of its ability to replicate observed 

concentrations of ozone and its precursors (operational evaluation), and in terms of the 

model’s ability to correctly portray physical processes, and thus its ability to simulate the effect 

of emission changes (diagnostic evaluation).

For the operational evaluation, useful statistical metrics include mean normalized bias 

(MNB), mean normalized gross error (MNGE), peak bias (APPB), and peak error (APPE). The 

defining formulas are at Guidance p. 198 (pdf. 207). Other statistics such as mean bias, mean 
87

error, root mean square error, correlation coefficients, etc. should also be calculated to the 

extent that they provide meaningful information. Graphical analyses can also be useful, such as 

time series and scatter plots of modeled vs. observed concentrations, spatial plots or 

animations of modeled ozone in each grid cell with observed values noted for monitor 

locations. EPA no longer recommends specific performance goals for statistical metrics, and 

cautions against their use as “pass/fail” tests. Guidance p. 216 (pdf. 225). Instead, the results of 

various tests and analyses should be weighed qualitatively to assess the adequacy of model 

performance. Appendix B to the Guidance lists sets of performance goals and results that have 

been used in recent model evaluations.

For the diagnostic evaluation, the Guidance discusses a number of approaches, including 

observational models, probing tools, receptor models, retrospective analyses, and sensitivity 

analyses. Guidance p. 208 (pdf. 217). Observational models include the use of indicator species 

ratios that give clues about which processes are dominant, and whether VOC or NOx is the 

limiting precursor for ozone formation. Probing tools include source apportionment tools that 

track the chemical products of emissions from specified source groups, the direct decoupled 

method (DDM) that reports model sensitivity to input changes without rerunning the model, 

and process analysis (PA) that tracks the contributions of particular physical and chemical 

process to model results. A retrospective analysis compares modeled trends to observed trends 

given known emission changes over a historical period. Sensitivity analyses explore the model 

response to changes in important inputs such as total emissions, alternative boundary 

conditions, alternative meteorological models or model setups, alternative vertical layer 

schemes, and finer or coarse grid resolution. All of these methods can help to determine 

whether the model responds in a physically reasonable way to change, and to identify inputs 

that may need further refinement.

2013 Ozone Plan’s air quality model performance is discussed briefly in 2013 Ozone Plan 

Chapter 6, and in detail in Appendix B. Chapter 6 states: “Based on the statistical comparisons 

between observed ozone and predicted ozone data, the base case modeling scenarios were 

determined to be performing adequately overall in the Sacramento Region.” p 6-6 (pdf p.80). 

Appendix B lists statistics that were calculated to evaluate model performance for 1-hour ozone 

and 8-hour ozone (Tables B-5 – B-30). These are substantially the same as the statistics 

recommended in the EPA Guidance. The exception is that instead of the peak bias and peak 

error, a comparable “peak site prediction ratio” and “region peak prediction ratio” are listed; 

here the peak ratios are unpaired meaning that concentrations are not paired hour by hour, but 

rather the peak concentration for the day is considered, regardless of the particular hour. 

The 1999 episode performance is summarized in Appendix B, Tables B-5 – B-6. Day and site 

specific statistics are detailed in Tables B-9 – B-19. The 2000 episode performance is 

summarized in Appendix B, Table B-7 – B-8. Day and site specific statistics are detailed in Tables 

B-20 – B-30. Examination of the episode summary tables shows a slight underprediction and a 

slight overprediction in 8-hour ozone, for example, as characterized by the five-day episode 

average of the mean normalized bias for the Sacramento Region, -2% and +9% for 1999 and 

2000 episodes respectively. 

Additional performance evaluations over the remaining modeling domain can be found in 

the SJV 2007 Ozone Plan, Appendix F and our TSD associated with that action (77 FR 12652)
88

EPA finds the model performance is adequate for conducting the attainment 

demonstration.

k. Modeled Attainment Test

A modeled attainment test is an exercise in which an air quality model is used to simulate 

current and future air quality. If future estimates of ozone concentrations are less than the 

NAAQS, then this element of the attainment test is satisfied. Our recommended test is one in 

which model estimates are used in a “relative” rather than “absolute” sense. That is, we take 

the ratio of the model’s future to current (baseline) predictions at monitors. We call these 

ratios relative response factors, RRFs. Future ozone concentrations are estimated at existing 

monitoring sites by multiplying the modeled relative response factor at locations “near” each 

monitor by the observation-based “baseline” design value for the monitor. The resulting 

predicted “future concentrations” are compared to NAAQS. Guidance p. 15 (pdf. 24).

Future concentration 

= (baseline design value) * (model future prediction) / (model baseline prediction)

= (baseline design value) * RRF

After analyzing how RRFs vary with the number of days modeled and with the choice of 

minimum ozone threshold, EPA recommended several criteria for day selection to ensure that 

the RRFs are robust in the face of natural variability (Guidance p. 146 (pdf. 155)):

 If there are 10 or more days with daily maximum 8-hour average baseline modeled 

ozone > 85 ppb, then use an 85 ppb threshold.

 If there are less than 10 days with daily maximum 8-hour average baseline modeled 

ozone > 85 ppb, then reduce the threshold down to as low as 70 ppb until there are 

10 days in the mean RRF calculation.

 If there are less than 10 days with daily maximum 8-hour average modeled ozone > 

70 ppb, then use all days > 70 ppb.

 Don’t calculate an RRF for sites with less than 5 days > 70 ppb.

2013 Ozone Plan’s NAAQS attainment test is discussed in Appendix B, starting at p. B-33 

(pdf p.53). The Plan provides RRF tables and ozone isopleths diagrams (“carrying capacity 

diagrams”) for each monitoring site for the future year 2018 (Appendix B, Figures B1 - B10). 

Each table has a column for every day modeled in the two episodes, and has entries for 

observed and modeled peak concentration, modeled peak within 15 km, design value, average 

of the modeled peak over days eligible for inclusion in the RRF calculation, and the future year 

concentration within 15 km. The ratio of the latter two is the RRF itself, which is not explicitly 

shown. Below each table is an ozone isopleth diagram, which shows ozone concentration for 

various fractional emissions reductions from the original forecasted 2018 planning emissions 

inventory (121 tpd ROG and 104 tpd NOx). The isopleths show the ozone result with the 

application of the RRFs, and with an “offset” of 40 ppb (which is assumed to be a background 

value not affected by emission reductions). The attainment test was based on these isopleths.
89

The reductions needed by the plan overall were driven by results at the peak ozone site, 

Cool. This site has a base year design value of 88 ppb (Appendix B, p. B-40, pdf p.61). The Plan 

states that year 2018 emission reductions from all new local, regional, state and federal control 

measure committals (11.6% VOC and 16.3% NOx) are more than the percent reduction needed, 

and will provide reductions for accelerated progress (see strike-out point A in Figure B-1 on p.B40). 

The air districts within the Sacramento Federal Nonattainment Area (SFNA) initially adopted 

a 2009 Sacramento Regional 8-hour ozone Attainment and Reasonable Further Progress Plan in 

February 2009 (2009 Ozone Plan), which included the air quality modeling discussed above . At 

the time, the 2009 Ozone Plan reflected the best available emission inventory and modeling 

calculations. Since then, CARB and Districts within SFNA have updated several emission 

inventory categories including trucks, in-use off-road equipment, ocean-sea going vessels, and 

cargo handling equipment. This review has resulted in a 16% reduction in NOx and a 9% 

reduction in VOC as compared with the 2002 baseline emission inventory used as the basis for 

the 2009 Ozone Plan air quality modeling.

Because photochemical modeling is a multi-year, time and resource intensive process,

modeling to include the revised emission estimates was not conducted here. Instead new 

emissions targets were developed using an alternative approach. The response of the existing 

modeling to percent emission reductions is assumed to apply, despite the change in absolute 

emissions levels in the baseline. This approach determines whether emission reductions from 

the baseline year, using revised emission estimates, are consistent with attainment using 

existing modeling. This is a conservative approach, since existing ozone response diagrams 

show that ozone concentrations decrease more rapidly as NOx emissions decrease (i.e., 

incrementally, each new ton of NOx reductions will have a greater ozone benefit). 

Table B-31 compares the original and updated NOx and VOC emission estimates. The 

percent change in the 2002 baseline and 2018 a year inventory from the 2009 Ozone SIP are 

54% and 27% for NOx and VOC respectively. The percent change using updated emissions are 

53% and 33% respectively, sufficient to achieve attainment using existing modeling (see point A 

in Figure B-1 on p.B-40).

The 2013 Ozone Plan applies the modeled attainment test in accordance with EPA 

Guidance, except Plan’s version is more conservative, since it assumes a constant 40 ppb 

background. The revised inventory analysis supports the conclusion that adopted controls will 

result in attainment by 2018. Given all the uncertainties the carrying capacity, the approach 

used is acceptable. EPA finds that the Plan’s modeled attainment test was correctly applied, 

and that the modeling demonstrates attainment of the ozone NAAQS.

l. Unmonitored Area Analysis

An unmonitored area analysis (UAA) uses a combination of model output and ambient data 

to identify areas without a monitor that might exceed the NAAQS in the base year or after 

application of the control strategy. This is necessary because the recommended modeled 

attainment test based on relative reduction factors may be applied only at monitor locations, 

and is particularly necessary in nonattainment areas where the ozone or PM2.5 monitoring 
90

network just meets or minimally exceeds the size of the network required to report data to Air 

Quality System (AQS). The analysis should include, at a minimum, all nonattainment counties 

and counties surrounding the nonattainment area (located within the State). In order to 

examine unmonitored areas in all portions of the domain, it is recommended to use 

interpolated spatial fields of ambient data combined with gridded modeled outputs. Guidance 

p. 29 (pdf. 38). EPA’s MATS software can perform this calculation, but other methods may also 

be used. Due to the location of monitored data, the results of the analysis are less certain than 

for the modeled attainment test and should be handled on a case by case basis, possibly by 

additional analyses or tracking. Guidance pp. 32 and 33 (pdf. 41 and 42), respectively.

Gradient-adjusted spatial fields are first created for the base year. Future year estimates 

can then be created by applying gridded RRFs to the gradient-adjusted spatial fields. The basic 

steps are as follows:

1. Interpolate base year ambient data to create a set of spatial fields;

2. Adjust the spatial fields using gridded model output gradients (base year values);

3. Apply gridded model RRFs to the gradient-adjusted spatial fields; and

4. Determine if any unmonitored areas are predicted to exceed the NAAQS in the future.

The 2013 Ozone Plan’s unmonitored area analysis is discussed in CARB’s Staff Report, 

Appendix F “Unmonitored Analysis”. This analysis used MATS with the default configuration 

following the four steps laid out in the Guidance, and provided maps at each step, colored 

according to the resulting ozone level (or the RRF, for step 3). CARB notes the monitors show 

adequate coverage of the regions with elevated ozone concentrations. The network captures 

elevated ozone within a 15-km radius of the monitors and no peak concentrations are found 

outside of the networks spatial coverage. Therefore CARB concludes, no unmonitored areas 

with concentrations higher than those predicted to occur at the monitors in the attainment 

year.

EPA finds that the unmonitored area analysis was properly performed, and that its results 

support the attainment demonstration.

m. Weight of Evidence Determination

States/Tribes should always perform complementary analyses of air quality, emissions and 

meteorological data, and consider modeling outputs other than the results of the attainment 

test. Such analyses are instrumental in guiding the conduct of an air quality modeling 

application. Sometimes, the results of corroboratory analyses may be used in a weight of 

evidence determination to show that attainment is likely despite modeled results which may be 

inconclusive. The further the attainment test is from being passed, the more compelling 

contrary evidence produced by corroboratory analyses must be to draw a conclusion differing 

from that implied by the modeled attainment test results. Guidance p. 17 (pdf. 26).

Supplemental analyses could include additional modeling using alternative models and inputs, 

modeling apportionment and process analysis tools, alternative metrics (such as change in the 

number of grid cells above the NAAQS), trends in ambient air quality, trends in emissions, 

receptor modeling, and indicator species approaches.
91

TABLE B-1

Guidelines For Weight of Evidence Determinations

Results of Modeled Attainment Test

Supplemental Analyses

Ozone Annual PM2.5 24-Hour PM2.5

Future Design Value 

< 82 ppb, all 

monitor sites

Future Design Value 

< 14.5 μg/m3, all 

monitor sites

Future Design Value 

< 62 μg/m3, all 

monitor sites

Basic supplemental analyses 

should be completed to confirm 

the outcome of the modeled 

attainment test

Future Design Value 

82 - 87 ppb, at one 

or more sites/grid 

cells

Future Design Value 

14.5-15.5 μg/m3, at 

one or more 

sites/grid cells

Future Design Value 

62-67 μg/m3, at one 

or more sites/grid 

cells

A weight of evidence 

demonstration should be 

conducted to determine if 

aggregate supplemental analyses 

support the modeled attainment 

test

Future Design Value 

> 88 ppb, at one or 

more sites/grid cells

Future Design Value 

> 15.5 μg/m3, at one 

or more sites/grid 

cells

Future Design Value 

> 68 μg/m3, at one 

or more sites/grid 

cells

More qualitative results are less 

likely to support a conclusion 

differing from the outcome of the 

modeled attainment test.

2013 Ozone Plan’s weight of evidence determination is discussed in the 2013 Ozone Plan, 

Chapter 10 with additional information in Chapter 4. This discussion includes ozone air quality 

trends, meteorologically adjusted ozone trends, and precursor emission and ambient trends, all 

of which show continued progress toward NAAQS attainment. 

NOx and VOC (comparable to “ROG” in the Plan documents) emissions are estimated to 

have declined since the mid-1990s. The analysis in Chapter 4 indicates that the number of days 

over the 8-hour ozone standard for the peak monitoring site in each year from 1990-2012 

decreases from about 34 down to 15, which equals a decline rate of about 0.8 exceedance days 

per year (r2= 0.32). The ozone design value (which is the running 3-year average of the 4th

highest daily ozone value for each year) for the peak monitoring site also indicates a decline, 

from 107 ppb down to about 98 ppb. The ozone design value has improved from being 24 ppb 

(or 28%) over the standard down to about 14 ppb (or 16%), which equals a decline rate of 

about 0.4 ppb per year (r2= 0.52). There is considerable year-to-year variability due to 

meteorological factors, however, there appears to be overall improvement as indicated by the 

trendlines shown. During the late-1990s, the ozone problem was more widespread throughout 

the nonattainment area. Now, the ozone problem is confined to the central subregion and 

more urbanized portions of the eastern subregion. 

EPA finds that these analyses support the attainment demonstration prediction of ozone 

NAAQS attainment, and constitute an adequate weight of evidence determination.

3. Conclusions 
92

The modeling used for the attainment demonstration was made available to the public for 

comment at the same time as the draft 2013 Ozone Plan, and were subject to public hearing as 

part of final version of the Plan. 

The air quality modeling documentation in Chapter 6 and Appendix B of the Plan and 

CARB’s Unmonitored Area Analysis, contains all the elements required by EPA’s modeling 

guidance. The modeling is based on the best and most current information available at the time 

the plan was developed. Based on our evaluation discussed above, we propose to find that the 

modeling analysis used for the attainment demonstration in the 2013 Ozone Plan meet the CAA 

section 182(c)(2)(A) requirement that the plan provide for attainment of the NAAQS, and that 

the modeling in the 2013 Ozone Plan provides an adequate basis for the Plan’s reasonably 

available control measures, reasonable further progress, and attainment demonstrations.
93

VII. Post-2018 Contingency Measure

The Sacramento Ozone Plan relies on emission reductions in excess of RFP as contingency measures 

if the SMA fails to meet RFP requirements. If the SMA fails to attain by June 15, 2019, the Sacramento 

Ozone Plan relies on additional incremental emissions reductions in 2019 from fleet turnover resulting 

from continued implementation of measures in the Revised 2007 State Strategy. 

To provide contingency measures for failure to attain, the SIP relies on the additional incremental 

emissions reductions resulting from fleet turnover in calendar year 2019 (the year after the attainment 

year). Additional emissions reductions resulting from turnover in the on- and off-road mobile source 

fleet in 2019 may be used to meet the attainment contingency measure requirement. Table 14 below 

demonstrates that the Sacramento Ozone Plan has sufficient VOC reductions in 2019 to provide at least 

a three percent reserve for use as a possible attainment contingency measure. In addition, the 

Sacramento Ozone Plan also provides NOx reductions in 2019 that are available for use in support of the 

attainment contingency measure, although the NOx reductions alone do not provide a three percent 

reserve unless combined with a portion of the VOC reductions.

Table 14. Calculation of Post-2018 Attainment Contingency Measure 

Emission Calculations

VOC

tpd

NOx

tpd

A. 2018 Attainment Year Inventory Target 107.1 76.5

B. CARB 2019 Emissions Forecast 99.8a 74.4a

C. EPA Adjustments to 2019 Inventory 0 +0.5b

D. Adjusted 2019 Inventory (Line B + Line C) 99.8 74.9

E. Forecasted 2019 Creditable Reductions (Since 2018) Exceeding 

the Attainment Target Since 2018 (Line A – Line D) 7.3 1.6

F. Forecasted Percent Reductions Since 2018 (Line E ÷ Line D) 7% 2%

G. Percent Reduction Required From 2018 Adjusted Baseline 

Inventory

3% nac

H. Attainment Contingency Measure Met? (Is Line F > or = Line G?) Yes nac

a Tables C1 and C2 of CARB’s 2013 Staff Report. These are conservative estimates because, for example, the onroad mobile source estimates do not include reductions for Moyer, Prop 1B, RFG, Smog Check, AB1493, and 

Advanced Clean Car program. 

b EPA removed estimated reductions credits for non-road mobile source reductions from Moyer and Prop 1B 

programs currently not in the SIP. 

c not applicable (na) because requirement already met by VOC reductions.
94

VIII. Motor Vehicle Emissions Budgets 

Motor Vehicle Emissions Budgets in the Sacramento Ozone Plan (tpd, average summer weekday)

NOx VOC 

2014 2017 2018 2014 2017 2018

On-Road Inventory 47.70 37.12 34.34 23.43 18.98 17.75

CARB adjustments to baselinea

RFG 0.0 0.0 0.0 -1.87 -1.47 -1.31

Prop 1B -1.7 0.0 0.0 0.0 0.0 0.0

Moyer -0.08 -0.04 -0.05 0.0 0.0 0.0

AB1493 -0.01 -0.01 -0.01 -0.11 -0.21 -0.33

Smog Check -0.37 -0.37 -0.33 -0.64 -0.57 -0.33

Advanced Clean Cars 0.0 -0.18 -0.28 0.0 -0.12 -0.15

Regional Strategy Reductionsb-0.53 -0.41 -0.49 -0.10 -0.03 -0.03

Totals 45.02 36.11 33.19 20.70 16.58 15.46

EPA adjustments for measures not in 

the SIP

Prop 1B -1.7 0.0 0.0 0.0 0.0 0.0

Moyer -0.08 -0.04 -0.05 0.0 0.0 0.0

Regional Strategy Reductions -0.53 -0.41 -0.49 -0.10 -0.03 -0.03

EPA adjustments totals 47.33 36.56 33.73 20.8 16.61 15.49

Safety Margin 3 2 3 2 1 1

Adjusted MVEBS 50.33 38.56 36.73 22.80 17.61 16.49

Adjusted MVEBs (rounded up) 51 39 37 23 18 17

MVEBs in Sacramento Plan that EPA 

has found adequatec

49 39 37 23 18 17

a 2013 CARB Staff Report, Appendix E, Table E1.

b

Sacramento Plan, Appendix F, Table F-1. The Regional Strategy Reductions includes the Sacramento Emergency 

Clean Air & Transportation Grant Program (SECAT).

c 79 FR 46436, August 8, 2014.

Discussion

EPA cannot credit reductions from on-road mobile source incentive measures that have not approved by EPA. The 

Proposition 1B program, Carl Moyer program, and SECAT program measures have not been approved by EPA. 

Therefore, these reductions are not eligible for use in a budget test. For the 2014 NOx budget, removing credit for 

measures not in the SIP would still allow for a conformity test to pass the 49 tpd NOx budget as long as the 

remaining safety margin is not exceeded. In the Sacramento Plan, the 2014 NOx budget includes a 3.0 tpd safety 

margin plus a 0.98 tpd cushion from rounding up the on-road inventory. This creates a total buffer of 

approximately 4.0 tpd of NOx. By removing credits (i.e., 2.3 tpd of NOx) for measures not in the SIP, a safety 

margin of approximately 1.7 tpd of NOx still remains. Therefore, EPA does not expect it will be difficult to pass a 

budget test for NOx during the 2014-2017 time frame. If and when EPA approves the Proposition 1B program, Carl 

Moyer program, and SECAT program measures into the SIP, the 2014 safety margin will increasing reductions from 

those programs can be credited in the budget test. This will potentially result in restoration of the entire 3 tpd 

safety margin, depending on which programs the State submits and EPA approves.

For all VOC budgets and for the 2017 and 2018 NOx budgets, the entire safety margin is available, even after 

disallowing credit for measures currently not in the SIP. 
95

IX. Status of Reasonable Available Control Technology State Implementation Plan 

Submittals 

District Submittal Status Published Cite#

Feather River AQMD 10/27/2009 Under Review - -

Sacramento 

Metropolitan AQMD

01/21/2009 Under review - -

Placer County APCD 07/11/2007 Under Review - -

Placer County APCD 07/18/2014 Under review - -

Yolo Solano AQMD 01/31/2007 Proposed 

Disapproval

08/18/2008 73 FR 48166

El Dorado AQMD 07/11/2007 Final Approval 04/18/2014 79 FR 21849