Changes to the ARB Staff Report Following 

October 22, 2013 Public Release

State of California

AIR RESOURCES BOARD

November 19, 2013

The following portions of the ARB Staff Report on the Proposed Revisions to the 8-Hour 

Ozone State Implementation Plan for the Sacramento Metropolitan’s 8-Hour Ozone 

Nonattainment Area (Sacramento Nonattainment Area) are corrected as discussed 

below. The original report tables, with added data shown in underline font and removed 

data in strikethrough font, follow.

1) The Reasonable Further Progress (RFP) table in Appendix D is revised to reflect 

recently refined accounting for Emission Reduction Credits (ERC), and 

corresponding revision to the RFP calculations

2) Two tables in the Staff Report’s Appendix E are revised to clarify the Sacramento 

Nonattainment Area’s transportation conformity budgets. The revised tables 

clearly identify emission reductions attributed to statewide emission reduction

strategies, which are collectively identified as “Adjustments to Baseline” in 

Appendix F, “Motor Vehicle Emission Budgets and VMT Analysis,” to the locally 

adopted Sacramento Regional 8-Hour Ozone Attainment and Reasonable 

Further Progress Plan – 2013 SIP Revisions.

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Table D1: Sacramento Nonattainment Area Reasonable Further Progress Demonstration

2002 2014 2017 2018

Baseline ROG 146.7 106.0 100.099.9 98.7

CA MVCP/RVP Adjustment 0.0 10.9 11.9 12.2

RACT Corrections 0 0 0 0

Adjusted 2002 Baseline ROG in milestone year 146.7 135.8 134.8 134.4134.5

RFP commitment for ROG reductions from new measures 0 0 0 0

Future Year ROG with existing and proposed measures 106.0 100.099.9 98.7

Required % change since previous milestone year 

(ROG or NOx) compared to 2002 9% 9% 3%

Target ROG levels 91.491.5 82.3 79.5

Apparent shortfall in ROG 14.5 17.717.6 19.319.2

Apparent shortfall in ROG, % 10.7% 13.113.0% 14.3%

ROG shortfall previously provided by NOx substitution, % 0.0% 10.7% 13.113.0%

Actual ROG shortfall, % 10.7% 2.42.3% 1.2%

Baseline NOx 164.8 92.6 80.0 76.9

CA MVCP Adjustment 0.0 10.4 11.0 11.2

Adjusted 2002 Baseline NOx in milestone year 164.8 154.3154.4 153.7153.8 153.5153.6

RFP commitment for NOx reductions from new measures 0 0 0 0.0

Change in NOx since 2002 61.8 73.773.8 76.7

Change in NOx since 2002, % 40.0% 47.948.0% 49.9%

NOx reductions since 2002 already used for RFP substitution 

and contingency through last milestone year, % 0.0% 13.7% 16.116.0%

NOx reductions since 2002 available for RFP substitution and 

contingency in this milestone year, % 40.0% 34.234.3% 33.833.9%

Change in NOx since 2002 used for ROG substitution in this 

milestone year, % 10.7% 2.42.3% 1.2%

Change in NOx since 2002 available for contingency in this 

milestone year, % 3.0% 3.0% 3.0%

Change in NOx since 2002 surplus after meeting substitution 

and contingency needs in this milestone year, % 26.3% 31.831.9% 32.6%

RFP shortfall, if any 0.0% 0.0% 0.0%

RFP Met? YES YES YES

Contingency Met? YES YES YES

Note: ROG and NOx baseline emissions have been rounded to 1 decimal point.

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Table E1: Sacramento Nonattainment Area NOx Motor 

Vehicle Baseline Emissions BudgetsAdjustments

Attributable to Statewide Strategies in tons per day

2014 2017 2018

Baseline EMFAC2011 47.70 37.12 34.34

Adjustments to Baseline -2.15 -0.60 -0.66

RFG 0.00 0.00 0.00

Prop 1B -1.70 0.00 0.00

Moyer -0.08 -0.04 -0.05

AB1493 -0.01 -0.01 -0.01

Smog Check -0.37 -0.37 -0.33

ACC 0.00 -0.18 -0.28

Safety Margin 3.00 2.00 3.00

Total 48.55 38.51 36.67

Rounded Total 49 39 37

Table E2: Sacramento Nonattainment Area VOC Motor 

Vehicle Baseline Emissions BudgetsAdjustments

Attributable to Statewide Strategies in tons per day

2014 2017 2018

Baseline EMFAC2011 23.43 18.98 17.75

Adjustments to Baseline -2.63 -2.37 -2.26

RFG -1.87 -1.47 -1.31

Prop 1B 0.00 0.00 0.00

Moyer 0.00 0.00 0.00

AB1493 -0.11 -0.21 -0.25

Smog Check -0.64 -0.57 -0.55

ACC 0.00 -0.12 -0.15

Safety Margin 2.00 1.00 1.00

Total 22.80 17.60 16.49

Rounded Total 23 18 17

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