Attachment 6

Changes to the Plan Following April 22, 2013 Public Release

September 26, 2013

2013 Revision to the Sacramento Regional 8-hour Ozone Attainment

and Reasonable Further Progress Plan

September 26, 2013

Page 1

Page No. Changes

Plan

Inside 

Cover Page

Updated the Air Pollution Control Officer that changed after notice published 

for the Feather River Air Quality Management District.

Table of 

Content

Page numbers changed for Chapters 7 and 8.

List of 

Figures

Removed Figure 8-2 from the list.

Section 1.4 

Tables 1-1 

and 1-2

Removed ERCs from the tables, updated the total emission for the milestone 

years and the attainment year, added footnotes describing that ERCs are 

already in the emission inventory estimates, and to match Tables 5-2 and 5-3.

Section 1.6 Revised discussion clarifying the necessity of a dual pollutant strategy.

Section 1.6 

Table 1-3

Corrected computational errors in Table 1-3 for the “Total Local Regulatory 

Measures” and “Total Reductions”.

Section 1.7 

Table 1-5

The numbers in the table are corrected to 1 decimal point.

Section 1.9 Revised discussion for readability.

Section 1.10 Changed information on VMT Offset more precise.

Section 1.13 Removed “in downwind” from bullet number 3 improving clarity.

Section 2.4 Added reference to EPA’s finding that the Sacramento Region attained the 

revoked 1-hour ozone standard.

Section 2.5 Revised discussion for readability.

Section 2.7 Added recent events for the public hearing process.

Section 3.1 Added reference to EPA’s finding that the Sacramento Region attained the 

revoked 1-hour ozone standard.

Section 3.3 Added EPA’s action on reclassification request and removed the information 

for previous “Serious” classification.

Section 3.5 Revised discussion for readability.

Section 3.7 Revised discussion for readability.

Section 3.8 Revised discussion for readability.

Section 3.9 Reorganized the discussion to present events for the Reasonable Further 

Progress Plan (RPF) in chronological order.

Section 4.1 Revised discussion for readability.

Section 4.2 Revised discussion for readability. Noted relocation of one monitoring site in 

2010.

Section 4.3 Revised discussion for readability.

Updated the number of exceedance days to match updated data in Table 4-1.
2013 Revision to the Sacramento Regional 8-hour Ozone Attainment

and Reasonable Further Progress Plan

September 26, 2013

Page 2

Page No. Changes

Section 4.4 Removed the R2statistics summary since they are not needed.

Added the 2008-2012 air quality data and updated statistics for number of 

exceedance day trend. 2008-2012 air quality data was included to demonstrate 

continuing improvement of air quality in the Sacramento Federal 

Nonattainment Area. Air quality continues to improve; the peak site design 

value changed from 98 parts per billion (ppb) in 2007 to 95 ppb in 2012. The 

site recording the highest number of exceedance days shifted from Cool to 

Folsom.

Section 4.5 Updated the lower range of the region’s ozone design value concentration. The 

peak design value site shifted from Cool to Folsom.

Section 4.6 Removed the R2statistics summary since they are not needed.

Added 2008-2012 air quality data and updated statistics for ozone design 

value trend. Updated Tables 4-1 and 4-2 to reflect the latest information 

downloaded from CARB’s iADAM Air Quality Data Statistics on 06/06/2013. 

The statistics of Colfax, Cool, Echo Summit Folsom, Placerville, Pleasant 

Grove, Rocklin, Roseville, Sac- Air Port Road, Vacaville, and Woodland sites 

have been updated.

Section 5.4 

Tables 5-2 

and 5-3

Revised Tables 5-2 and 5-3 for updated stationary sources emissions 

inventory. The changes were made to correct an error and make the inventory 

tables 5-2 and 5-3 match the Total ERCs shown in Tables 5-4 and 5-5. In the 

April 2013 version, the ERCs accounted in Table 5-2 and 5-3, was added to 

the inventory by CARB using ERC adjustment factors. The adjustment factor 

was incorrect and less than the ERCs in Table 5-4 and 5-5 by 0.7 tpd NOX and 

0.8 tpd VOC. This error is corrected by adding the difference as ERC 

adjustments as shown in Table A5-1.

Section 5.5 Revised the discussion for footnote 64 for readability.

Section 5.7 

Tables 5-4 

and 5-5

Updated the future year emissions inventory forecasts to match updated 

Tables 5-2 and 5-3. 

Section 6.3 Revised discussion for readability.

Section 6.12 Revised discussion for readability.

Section 7.1 Revised discussion for readability.

Section 7.3 Inserted new discussion describing Table 7-2 and fixed several grammatical 

errors.

Section 7.3 

Table 7-2

Replaced Table 7-2 with CARB’s update dated 05/15/2013. Changed Table 7-

2 to be consistent with Tables 5-2 and 5-3. Added footnote 5 to indicate that 

the safety margins for transportation conformity are included in the total 

inventory.

Section 7.3 Showed the deleted Tables 7-1 and 7-1A inadvertently omitted in the prior 

strikeout version.

Section 7.18 Updated the language for control measures status.

Section 7.18 

Table 7-5

Corrected computational errors in Table 7-5 for the “Total Local Regulatory 

Measures” and “Total Reductions”.

Sections 8.3 Revised discussion to more accurately characterize the attainment 
2013 Revision to the Sacramento Regional 8-hour Ozone Attainment

and Reasonable Further Progress Plan

September 26, 2013

Page 3

Page No. Changes

and 8.4 demonstration as a result of the correction to the inventory (see discussion of 

Section 5.4.) 

Figure 8-1 Re-inserted the original Point A and Point B to avoid confusion in the text 

description in the strikeout version.

Section 8.5

Table 8-1

The numbers were revised to reflect the corrected inventory (see discussion of 

Section 5.4) and in the table are corrected to 1 decimal point.

Section 8.6 Removed Section 8.6 and renumbered Section 8.7 to 8.6

Section 8.6

Table 8-2

Updated the table for showing the numbers with 1 decimal point.

Section 12.5 

Table 12-1

Combined the Aircraft Operations and Ground Service Equipment emissions 

and rounded emissions up to the next tenth decimal number to be consistent 

with the rounding convention for the emission inventory.

Removed the 94SIP footnote which is irrelevant after removal of the 94SIP 

information from the table.

Section 

13.4.1

Replaced the discussion of safety margins with a reference to Chapter 11 

where the detailed discussion appears.

Section 

13.4.3

Revised discussion for readability.

Section 13.5 Inserted discussion for the RFP contingency requirement.

Section 14.6 

Table 14-1

Corrected computational errors in Table 14-1 for the “Total Local Regulatory 

Measures” and “Total Reductions”.

Section 14.7 

Table 14-3

See discussion of Table 8-1 for discussion of changes.

Appendices

Appendix A 

(page A-1)

Under the description of Appendix A4, the reference for off-road equipment 

emissions model should be OFFROAD 2007, not EMFAC2007.

Appendix 

A2

Added new language about the ERCs in CEPAM (A2) inventory and ERC 

correction by external adjustment

Appendix 

A5

Added ERC adjustments to Table A5-1. Added discussion on calculation of 

ERCs in CEPAM and the determination of ERC adjustments needed so that 

full amount of ERCs (3 tpd of NOX and 4 tpd of VOC) is added to the planning 

inventories for attainment demonstration and RFP.

Appendix 

A6

Added language to state that 3 tpd of NOX ERCs and 4 tpd VOC ERCs are 

added to the inventory.

Appendix 

A7

Revised 2019 inventory to reflect correct ERCs.

Appendix B

Table B-31

Inserted “and VOC” to the title after “NOX

” and modified the description and 

added a footnote of the second last row of the table to avoid confusion.

Updated the emissions inventory for attainment year.

Appendix B

Figure B-1

Showed the deleted discussion of Point A and Point B to avoid confusion in the 

text description in the strikeout version.

Page C-51 

Table A9-1

Showed the deleted Point A and Point B to avoid confusion in the text 

description in the strikeout version.
2013 Revision to the Sacramento Regional 8-hour Ozone Attainment

and Reasonable Further Progress Plan

September 26, 2013

Page 4

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Appendix F Fixed the page number errors in the footer.

Revised the discussion for clarity.