Yuba City-Marysville PM2.5 

Nonattainment Area Redesignation 

Request and Maintenance Plan

 

Adopted by the 

Feather River Air Quality Management District on April 1, 2013
Feather River Air Quality Management District April 1, 2013

This PM2.5 Redesignation Request and Maintenance Plan was prepared by:

The Feather River Air Quality Management District

1007 Live Oak Boulevard, Suite B-3

Yuba City, CA 95991

Phone (530) 634-7659

Principal Author: Sondra Spaethe, Planner II, FRAQMD

Reviewed by: David A. Valler, Jr., APCO, FRAQMD

With Contributions from:

Jim Wagoner, Butte County Air Quality Management District

Armen Kamian, Butte County Air Quality Management District

Kasia Turkiewicz, California Air Resources Board

The FRAQMD would like to thank the California Air Resources Board for their 

contributions in the development of this Plan, as well as the Sacramento Area Council 

of Governments for providing the vehicle activity data used to generate the inventories 

and creation of the motor vehicle emission budgets.
Feather River Air Quality Management District April 1, 2013

Table of Contents

I: Executive Summary I-1

II: Introduction & Background II-1

a. Planning Area II-1

b. Background on Particulate Matter Air Pollution II-2

c. Health Impacts II-3

III: Regulatory History & Plan Elements III-1

a. National Ambient Air Quality Standards III-1

b. Overview of Particulate Matter NAAQS III-1

c. Designations III-2

d. Clean Data Policy III-2

e. Statutory Requirements for Redesignation III-3

IV: Air Quality IV-1

a. Monitoring Site Information IV-1

b. Design Values and Monitoring Data IV-2

c. Components of PM2.5 in the Planning Area IV-5

i. Speciation Data IV-5

d. Air Quality Trends IV-7

e. Exceptional Event Documentation IV-7

V: Emission Inventory V-1

VI: Maintenance Demonstration VI-1

a. Control Strategy VI-3

VII: Maintenance Contingency Measures VII-1

a. Measures to be adopted and “action level” VII-1

b. Commitment to continue to operate monitoring network VII-2

c. Verification of Continued Attainment VII-3

VIII: Motor Vehicle Emission Budgets VIII-1

IX: Conclusions IX-1

Appendix A: Definition of Yuba City-Marysville Planning Area

Appendix B: Emission Inventories

B-1: 2011 Inventory

B-2: 2017 Projected Inventory

B-3: 2024 Projected Inventory
Feather River Air Quality Management District April 1, 2013

I-1 Chapter I: Executive Summary

PM2.5 Redesignation Request/Maintenance Plan

I. Executive Summary

The PM2.5 Redesignation Request and Maintenance Plan is intended to provide 

necessary data and analyses to demonstrate that the Yuba City-Marysville PM2.5 

nonattainment area has attained the 2006 24-hour PM2.5 national ambient air quality 

standard and shall continue to maintain the standard for ten years from the approval of 

the Plan. 

The Yuba City-Marysville nonattainment area attained the 2006 24-hour PM2.5 standard 

during the 2006-2008 monitoring period, and continued to monitor attainment in 2009, 

2010, and 2011, with preliminary 2012 data showing that the area continues to meet the 

standard. The determination is based on complete, quality assured, and certified 

monitoring data from the Yuba City-Almond Street monitor.

The area has attained the standard through the implementation of permanent and 

enforceable measures adopted by the Feather River Air Quality Management District 

and the California Air Resources Board.

This Maintenance Plan has been prepared to incorporate all of the requirements in 

section 175A of the Clean Air Act (CAA). The District requests that the United States 

Environmental Protection Agency (USEPA or EPA) find all of the requirements 

applicable under section 110 and Part D are met and redesignate the Yuba CityMarysville area to attainment for the 2006 24-hour PM2.5 national ambient air quality 

standard (NAAQS).
Feather River Air Quality Management District April 1, 2013

II-1 Chapter II: Introduction & Background

PM2.5 Redesignation Request/Maintenance Plan

II. Introduction and Background

a. Planning Area 

On October 8, 2008, the US EPA designated the Yuba City-Marysville PM2.5 Planning 

Area as nonattainment for the 24-hour PM2.5 NAAQS. The designations and 

classifications were printed in the Federal Register on November 13, 2009 (74 FR 

58688) and became effective on December 14, 2009. The Yuba City-Marysville PM2.5 

Planning Area (Planning Area) is located in the southeastern portion of the Sacramento 

Valley Air Basin (SVAB) and includes all of Sutter County and a portion of Yuba County, 

as described in Appendix A. Figure II-1 shows the geographic location of the Planning 

Area within the SVAB. 

The SVAB is bound on the north and west by the Coastal Mountain Range, on the east 

by the southern portion of the Cascade Mountain Range and the northern portion of the

Sierra Nevada Mountains, and on the south by the San Joaquin Valley Air Basin. These 

mountain ranges reach heights in excess of 6,000 feet above mean sea level (MSL), 

with individual peaks rising much higher. Although a portion of the Planning Area is at 

elevations higher than 1,000 feet above MSL, the vast majority of its populace lives and 

works below that elevation. 

Summer conditions are typically characterized by high temperatures and low humidity, 

with prevailing winds from the south. Summer temperatures average approximately 

90F during the day and 50F at night.

Winter conditions are characterized by occasional rainstorms interspersed with stagnant 

and sometimes foggy weather. Winter daytime temperatures average in the low 50s and 

nighttime temperatures average in the upper 30s. During winter, north winds become 

more frequent, but winds from the south predominate. Rainfall occurs mainly from late 

October to early May, averaging 17.2 inches per year, but varies significantly each year.

In addition to prevailing wind patterns that control the rate of dispersion of local pollutant 

emissions, Yuba and Sutter counties experience two types of inversions that affect the 

air quality. The first type of inversion layer contributes to photochemical smog problems 

by confining pollution to a shallow layer near the ground. This occurs in the summer 

when sinking air forms a “lid” over the region. The second type of inversion occurs 

when the air near the ground cools while the air aloft remains warm. These inversions 

occur during winter nights and can cause localized air pollution “hot spots” near 

emission sources because of poor dispersion.
Feather River Air Quality Management District April 1, 2013

II-2 Chapter II: Introduction & Background

PM2.5 Redesignation Request/Maintenance Plan

Figure II-1

b. Background on Particulate Matter Air Pollution

Fine particulate matter, referred to as PM2.5, is that portion of particulate matter that is 

2.5 microns and smaller in diameter. PM2.5 pollution can be small particles or liquid 

aerosols. PM2.5 pollution is classified in terms of primary and secondary particles. 

All primary particles are emitted directly from a stack, volume source, or area source as 

either filterable or condensable particulate matter (PM). Primary PM is the sum of 

filterable and condensable PM. Examples include particulate from combustion sources 

(both filterable and condensable), fugitive dust sources, and sea salt spray. Filterable 

and condensable PM are further discussed in Chapter V.

Secondary particles are those formed through chemical reactions involving atmospheric 

oxygen, water vapor, hydroxyl radicals, nitrates, sulfates, sulfur dioxide (SO2), oxides of 
Feather River Air Quality Management District April 1, 2013

II-3 Chapter II: Introduction & Background

PM2.5 Redesignation Request/Maintenance Plan

nitrogen (NOX), ammonia (NH3) and organic gases from natural and anthropogenic 

sources. Particulate matter may be produced by natural causes (e.g., pollen, ocean salt 

spray, wind-blown dust and soil erosion) and by human activity (e.g., road dust, 

agricultural operations, fuel combustion products, wood burning, rock crushing, cement 

production and motor vehicles). 

c. Health Impacts

Health studies have shown a significant association between fine particles and 

premature death from heart or lung disease. Fine particles can aggravate heart and 

lung disease and have been linked to effects such as: cardiovascular symptoms; 

cardiac arrhythmias; heart attacks; respiratory symptoms; asthma attacks; and 

bronchitis. These effects can result in increased hospital admissions, emergency room 

visits, absences from school or work, and restricted activity days. Individuals that may 

be particularly sensitive to fine particle exposure include people with heart or lung 

disease, the elderly, and children1. 

 

1

Air Quality Designations for the 2006 24-hour Fine Particles (74 FR 58688)
Feather River Air Quality Management District April 1, 2013

III-1 Chapter III: Regulatory History and Plan Elements

PM2.5 Redesignation Request/Maintenance Plan

III. Regulatory History/Plan Elements

Pursuant to the federal Clean Air Act, the U.S. Environmental Protection Agency (U.S. 

EPA or EPA) sets primary air quality standards to protect public health including 

protection of sensitive populations such as asthmatics, children and the elderly, and 

secondary standards to protect public welfare including the protection against 

decreased visibility and damage to crops, animals, vegetation and buildings. Achieving 

the federal standards protects public health, reduces the region’s health care costs, and 

improves the quality of life for residents. This chapter describes EPA’s process for 

setting health-based standards and designating areas based on those standards, the 

history of the PM2.5 standard and the Planning Area’s designations, the CAA

requirements for areas based on those designations, and the statutory requirements an 

area must meet to be redesignated to attainment.

a. National Ambient Air Quality Standards

The Clean Air Act (CAA) was adopted in 1970. The legislation authorized the 

development of comprehensive federal and state regulations to limit emissions from 

stationary and mobile sources. The CAA was amended in 1977 and again in 1990. 

The CAA and amendments require the EPA adopt NAAQS for six criteria pollutants: 

ozone, particulate matter, carbon monoxide, nitrogen dioxide, sulfur dioxide, and lead. 

EPA formally designates areas as “nonattainment” (not meeting the standard), 

“unclassifiable/attainment” (meeting the standard or expected to be meeting the 

standard despite a lack of monitoring data), or “unclassifiable” (insufficient data to 

classify).

Once nonattainment designations take effect, the state and local governments have 

usually three years to develop implementation plans outlining how areas will attain and 

maintain the standards by reducing air pollutant emissions. The CAA requires EPA to 

conduct a periodic review of the science upon which the standards are based and the 

standards themselves.

b. Overview of Particulate Matter NAAQS

EPA issues NAAQS for particulate matter, one of the six criteria pollutants. EPA first 

issued standards for particulate matter in 1971 and has subsequently revised the 

standards in 1987, 1997 and 2006. The 2006 revision addressed two categories of 

particle pollution: fine particles (PM2.5), which are 2.5 microns in diameter and smaller; 

and inhalable coarse particles (PM10) which are smaller than 10 microns and larger than 

2.5 microns. 

The EPA established the separate annual and 24-hour standards for PM2.5 in 1997 (62 

FR 38652). The annual standard was set at 15 micrograms per cubic meter (μg/m3).

The 24-hour standard was set at 65 μg/m3, based on a 3-year average of the 98th

percentile of 24-hour PM2.5 concentrations.
Feather River Air Quality Management District April 1, 2013

III-2 Chapter III: Regulatory History and Plan Elements

PM2.5 Redesignation Request/Maintenance Plan

In 2006, EPA tightened the 24-hour PM2.5 standard from 65 μg/m3to 35 μg/m3, and 

retained the current annual PM2.5 standard at 15 μg/m3. The revised 24-hour PM2.5 

standards were published on October 17, 2006 (71 FR 61144) and became effective on 

December 18, 2006. 

c. Designations

On November 13, 2009 (74 FR 58688) EPA promulgated air quality designations for all 

areas in the U.S. for the 2006 PM2.5 NAAQS, effective on December 14, 2009. The 

Yuba City-Marysville area was designated nonattainment for the 24-hour PM2.5 NAAQS

based on 2005-2007 monitoring data. State Implementation Plans (SIPs) were due to 

EPA by December 14, 2012. Figure III-1 shows the nonattainment area. Appendix A 

contains the description from the federal register notice. 

Figure III-1
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III-3 Chapter III: Regulatory History and Plan Elements

PM2.5 Redesignation Request/Maintenance Plan

d. Clean Data Policy

Areas designated as nonattainment that attain the standard prior to the SIP submittal 

deadline, or prior to an area’s approved attainment date, are eligible for reduced 

regulatory requirements as described in EPA’s “Clean Data Policy.”2The Yuba CityMarysville area attained the PM2.5 NAAQS in 2008 (based on 2006-2008 data) and 

continued attainment between 2009 and 2011. Preliminary analysis shows that the 

area continues to meet the standard in 2012. A Clean Data Request was submitted by 

the State of California for the area on June 8, 2010. On January 10, 2013, the EPA 

determined that the area has attained the 2006 24-hour fine particle standard based on 

2009-2011 monitoring data3. Table III-1 summarized the CAA requirements for PM2.5 

Nonattainment Areas, the Clean Data Policy exemptions for areas that attain the 

standards, and their location in this Plan.

This Plan is intended to provide the air quality monitoring and emissions data to 

demonstrate the area has attained the PM2.5 standard. In addition, it includes regulatory 

requirements to ensure the Yuba City-Marysville area will maintain compliance with the 

national PM2.5 standard in the future.

e. Statutory Requirements for Redesignation

There are five statutory requirements an area must meet to be redesignated to 

attainment. These are:

1) EPA determines that the area has attained the NAAQS.

2) EPA has fully approved the area’s applicable implementation plan under section 

110(k). 

3) EPA determines improvement in air quality is due to enforceable emission 

reductions.

4) The area has a fully approved maintenance plan meeting section 175A.

5) The area has met all of the requirements applicable to the area under section 

110 and Part D prior to the approval of the redesignation.

The Yuba City-Marysville area attained the PM2.5 NAAQS in 2008 as described in the 

Clean Data Request4. EPA has determined that the area has attained the 24-hour 

standard. Approval of the Maintenance Plan and redesignation can occur 

simultaneously5. The District has attained the standard through enforceable emissions 

reductions as detailed in Chapter VI. The Maintenance Plan has been prepared to 

incorporate all of the requirements in section 175A of the CAA. The District requests 

that EPA find all of the requirements applicable under section 110 and Part D are met

 

2 Memorandum of December 14, 2004, from Steve Page, Director, EPA Office of Air Quality Planning EPA and 

Standards to Air Division Directors, ‘‘Clean Data Policy for the Fine Particle National Ambient Air Quality Standards.’’

3

Determination of Attainment for the Yuba City-Marysville Nonattainment Area for the 2006 Fine Particle 

Standard; California; Determination Regarding Applicability of Clean Air Act Requirements, 78 FR2211, January 10, 

2013.

4 Clean Data Request, James N. Goldstene, Air Resources Board, June 8, 2010.

5

Procedures for Processing Requests to Redesignate Areas to Attainment, Calcagni memo, Sept 4, 1992, page 3
Feather River Air Quality Management District April 1, 2013

III-4 Chapter III: Regulatory History and Plan Elements

PM2.5 Redesignation Request/Maintenance Plan

and redesignate the Yuba City-Marysville area to attainment for the 24-hour PM2.5 

NAAQS.

Table III-1 CAA Requirements for PM2.5 Nonattainment Areas and Areas with Clean Data

General 

Requirements

Federal 

CAA

PM2.5 

Implementation 

Rule

Description Required for 

area with 

clean data?

Location 

in Plan

Attainment Date 172(b)(2) 72 FR 20601 Nonattainment areas should 

reach attainment as 

expeditiously as practicable, but 

no later than 5 years from 

designation.

No-areas with 

clean data 

have already 

met standard.

Not 

Applicable

RACT/RACM 172(c)(1) 72 FR 20609-

20633

SIP provisions should provide 

for the implementation of 

reasonably available control 

measures and reasonably 

available control technologies.

No-suspended 

(72 FR 20665 

section 

51.1004(c)

Not 

Applicable

RFP 172(c)(2) 72 FR20633-

20645

SIP provisions must provide for 

reasonable further progress.

No-suspended 

(72 FR 20665 

section 

51.1004(c)

Not 

Applicable

Contingency 

Provisions

172(c)(1) 72 FR 20642-

20645

The SIP must provide for the 

implementation of specific 

measures that would take effect 

without further action by the 

State and that would be 

undertaken if the area fails to 

make RFP or attainment on 

time.

No-suspended 

(72 FR 20665 

section 

51.1004(c)

Not 

Applicable

Emissions

Inventory

172(c)(3) 72 FR 20647-

20651

The SIP must include a

comprehensive, current 

inventory of actual emissions 

from all sources of the relevant 

pollutants in the area.

Yes Chapter V

NSR 172(c)(4-5) 72 FR The SIP must identify and 

quantify the emissions of 

pollutants that will be allowed 

(in accordance with section 

173(a)(1)(B), from the 

construction and operation of 

major new or modified 

stationary sources in the area. 

The SIP must require permits 

for new or modified stationary 

sources.

Yes Chapter 

VI
Feather River Air Quality Management District April 1, 2013

IV-1 Chapter IV: Air Quality

PM2.5 Redesignaion Request/Maintenance Plan

IV. Air Quality

The Yuba City-Marysville Planning Area, designated nonattainment for the 2006 24-hr

PM2.5 National Ambient Air Quality Standard (NAAQS), has attained the standard. This 

determination is based upon complete, quality assured, quality controlled, and certified 

ambient air monitoring data that show that this area has monitored attainment of the 

2006 PM2.5 NAAQS during the 2006-2008 monitoring period. Furthermore, 2009, 2010, 

2011 and preliminary 2012 data demonstrates continued attainment of the standard. 

The ARB requested the EPA find the Yuba City-Marysville Planning Area in attainment 

for the 2006 24-hour fine particulate NAAQS on June 8, 20106. The request was based 

on review of quality assured and certified PM2.5 data that show attainment of the 

NAAQS during the 2006-2008 period. The data shows continued attainment through 

the 2009-2011 period. Preliminary data for 2012 indicate that the area continues to 

meet the standard.

On January 10, 2013, the EPA determined that the area has attained the standard 

based on 2009-2011 monitoring data. The final action also included a review of the 

quality assured, and certified PM2.5 ambient air monitoring data and found the data to be 

complete7.

a. Monitoring Site Information

The Yuba City-Maysville Planning Area has one monitoring site, Yuba City-Almond 

Street (site number 06-101-0003), that collects PM2.5 air quality data for a comparison to 

the NAAQS. The monitoring site is equipped with a Federal Reference Monitor (FRM). 

Through January 18, 2007, the monitor collected samples on a one in six days 

schedule. Starting on January 19, 2007, the sampling frequency was increased to daily.

PM2.5 data are submitted to the EPA database, Air Quality System (AQS). The data are 

available to the public via AQS (http://www.epa.gov/ttn/airs/airsaqs/aqsweb/) or via 

ARB’s web site: http://www.arb.ca.gov/html/ds.htm).

 

6

June 8, 2010 letter from James N. Goldstene, Executive Officer, ARB, to Jared Blumenfeld, Regional Administrator, 

U.S. EPA Region 9.

7

Determination of Attainment for the Yuba City-Marysville Nonattainment Area for the 2006 Fine Particle 

Standard; California; Determination Regarding Applicability of Clean Air Act Requirements, 78 FR 2211, January 10, 

2013.
Feather River Air Quality Management District April 1, 2013

IV-2 Chapter IV: Air Quality

PM2.5 Redesignaion Request/Maintenance Plan

Figure IV-1 Yuba City-Almond Street Monitor

b. Design Values and Monitoring Data

A monitoring site is considered to be in attainment of the 24-hour standard when the 24-

hour design value is less than or equal to 35 μg/m3. The 24-hour design value is the 

three year average of annual 98th percentile of 24-hour values recorded at each site. 

The design values for the Yuba City-Almond Street monitor for 2000 through 2011 are 

summarized in Table IV-1. The U.S. EPA regulations require at least 75 percent of data 

capture in each quarter of a consecutive 3-year period in order for a design value to be 

valid. The data meet the completeness requirements, therefore, the design values are 

considered valid. 

The 24-hour design values provided in Table IV-1 are calculated in accordance with 40 

CFR part 50, Appendix N (2006, amended 2007). Table IV-2 shows the top values and 

98th percentiles for 2007, 2009, 2010, and 2011. 2008 data are shown separately in 

Table IV-3. The 2008 data include exceptional events captured during summer 2008 

Northern California wildfires, for which documentation has been submitted to the EPA8. 

Data that have been flagged for exceptional events were excluded from the design 

value calculations. 

 

8

PM2.5 and PM10 Natural Event Document, Summer 2008 Northern California Wildfires, June/July/August 2008, 

August 28, 2009
Feather River Air Quality Management District April 1, 2013

IV-3 Chapter IV: Air Quality

PM2.5 Redesignaion Request/Maintenance Plan

Table IV-1 Summary Statistics for Yuba City, 2000-2011

24-hr Standard μg/m3

Annual Standard

μg/m3Percent Number of 

Year

Yearly 

98th 

Percentile

Design 

Value

Annual 

Average

Design 

Value

Data Capture Samples

Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Total

2000 38 53 10.6 23.7 94 93 87 93 15 17 14 16 62

2001 54 49 11.9 12.9 100 100 100 100 15 18 15 15 63

2002 34 42 13.6 12 87 87 100 80 14 15 18 15 62

2003 29 39 9.5 11.6 100 100 100 93 15 16 16 15 62

2004 38 34 10 11 100 100 100 93 15 15 16 15 61

2005 42 36 9.5 9.6 87 100 100 100 15 16 25 16 72

2006 41 40 11.3 10.3 87 93 93 100 16 15 16 17 64

2007 34 39 8.2 9.7 93 100 93 83 63 80 86 76 305

2008 23.1 33 8.4 9.3 79 97 90 85 72 88 83 78 321

2009 27.5 28 7.9 8.2 92 99 91 97 83 90 84 89 346

2010 17.1 23 5.9 7.4 77 93 89 96 69 85 82 88 324

2011 37.1 27 8.0 7.3 79 82 96 92 71 75 87 85 318

Data Affected by Summer 2008 Northern California Wildfires 
Feather River Air Quality Management District April 1, 2013

IV-4 Chapter IV: Air Quality

PM2.5 Redesignaion Request/Maintenance Plan

Table IV-2 Top PM2.5 measurements during 2007-2011

Rank PM2.5 (μg/m3) Date Comments

2007*

1 45 1/27/07

2 42 12/15/07

3 40 2/2/07

4 38 2/3/07

5 37 2/4/07

6 36 12/14/07

7 34 1/28/07 98th percentile, 7th highest value

8 34 2/1/07

9 33.7 11/25/07

10 31.6 11/26/07

2008 98th Percentile addressed in Table 3.

2009

1 41.8 12/25/09

2 36.3 12/26/09

3 35.2 12/4/09

4 30.8 1/14/09

5 30.2 12/20/09

6 29 1/30/09

7 27.5 12/27/09 98th Percentile 7th highest value

8 27.2 1/13/09

9 26.5 1/16/09

10 26.3 1/17/09

2010

1 72.2 7/4/10

2 26.9 12/4/10

3 23 11/5/10

4 20.4 12/24/10

5 18.3 1/29/10

6 18.2 2/4/10

7 17.1 1/6/10 98th Percentile 7th highest value

8 15.9 2/19/10

9 15.7 1/28/10

10 14.7 10/20/10

2011

1 57 7/4/11

2 46.4 12/29/11

3 41.9 12/9/11

4 41.5 12/25/11

5 40.4 12/20/11

6 39.1 12/24/11

7 37.1 12/10/11 98th Percentile 7th highest value

8 37.1 12/26/11

9 35.2 12/18/11

10 31.3 12/28/11

* Two sampling frequencies in 2007
Feather River Air Quality Management District April 1, 2013

IV-5 Chapter IV: Air Quality

PM2.5 Redesignaion Request/Maintenance Plan

c. Air Quality Trends

Ambient PM2.5 air quality has improved dramatically since the District began monitoring 

for PM2.5 in 1998. Between 2001 and 2011, the 24-hour and the annual average design 

values declined 45 to 50 percent due to emission reductions (see Figure IV-2).

Figure IV-2 PM2.5 Trends in the Planning Area

*Fire impacted days have been removed from the calculated design values.

d. Components of PM2.5 in the Planning Area

Analysis by the District and EPA indicates the key components of PM2.5 in the Planning 

Area are ammonium nitrate and organic carbon. Organic carbon is the significant PM2.5 

species and is localized. Historically, PM2.5 pollution is dominated during the winter 

months by smoke from residential wood burning stoves and fireplaces. The winter 

months of November through February are when the exceedences of the standard 

typically occur, as shown in Figure IV-3. Agricultural and residential open burning also 

contributes to the PM2.5 problem in the Planning Area. Due to meteorological conditions, 

smoke collects in localized, concentrated pockets. This means that the smoke from just 

one fire can cause a significant problem for the entire neighborhood. Because airborne 

particles take time to settle, the problem intensifies quickly. Additionally, smoke particles 

are so tiny that they may seep into homes despite closed doors and windows. 

Neighbors of wood burners may be breathing unhealthy particles, even if they are not 

using their own wood burning stoves or fireplaces. Emissions of residential wood 

0

2

4

6

8

10

12

14

0

10

20

30

40

50

60

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

Annual Average Design Value (ug/m3)

24-hr Design Value (ug/m3)

Year

Trends in 24-hr and Annual Average Design Values*

Natl 24HrDV Natl Ann Avg DV
Feather River Air Quality Management District April 1, 2013

IV-6 Chapter IV: Air Quality

PM2.5 Redesignaion Request/Maintenance Plan

burning stoves and fireplaces, agricultural and residential open burning, and other 

sources are included in Chapter V Emission Inventory.

Figure IV-3: Number of PM2.5 Exceedences by Month

i. Speciation Data

Chemical composition data are helpful in understanding the types of emission sources 

that contribute to ambient PM2.5. Since these kinds of data are not collected in the Yuba 

City-Marysville nonattainment area, the EPA arraigned for having the limited chemical

analysis performed on FRM Teflon filters

9

. These new data were intended to assist EPA 

and the States with the identification of boundaries for potential NA areas and to also 

assist with development of future control strategies if the areas are designated as 

nonattainment.

A total of 14 filters were analyzed from the Yuba City-Almond Street monitor 

representing sampling days occurring during the months of October through April from 

the years 2004, 2005, and 2006. Archived Teflon filters were analyzed by a 

combination of X-ray Fluorescence (XRF) to provide elemental concentrations and Ion 

Chromatography (IC) to estimate ions (sulfate, nitrate, potassium, ammonium, etc.). No 

measure of elemental carbon or organic carbon were made as part of this project as 

these carbon species cannot be measured on Teflon filters using the thermal optical 

procedures that are standard in speciation analysis. Carbonaceous mass was 

estimated by material balance following the SANDWICH method. 

 

9 Availability of New Speciation Data for Some Areas that EPA Intends to Designate as Nonattainment, Neil 

Frank, Office of Air Quality Planning and Standards, September 18, 2008

0

5

10

15

20

25

30

35

40

Nov Dec Jan Feb

PM2.5 Exceedences 2000-2011
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IV-7 Chapter IV: Air Quality

PM2.5 Redesignaion Request/Maintenance Plan

The speciation data (summarized in Figure IV-4) show that on high PM2.5 days, total 

carbonaceous mass (TCM) and ammonium nitrate comprise over 90 percent of PM2.5 

mass. Sulfates and crustal material compose a small portion on high PM2.5 days (6% 

and 2% respectively).

Figure IV-4 Speciation Results

The results from speciation data were also included in EPA’s Technical Support 

document (TSD) for the designations10. The TSD concluded that the speciation data 

support the idea that localized residential wood combustion on stagnant winter nights is 

what pushes the monitor into violation. This conclusion is consistent with observed 

hourly monitoring data and emissions inventory data in that residential wood 

combustion is a main contributor to wintertime PM2.5 exceedences in the Planning Area.

 

10 Technical Support for State and Tribal Air Quality 24-hour Fine Particle (PM2.5) Designations, U.S.EPA Office 

of Air Quality Planning and Standards, December, 2008.
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IV-8 Chapter IV: Air Quality

PM2.5 Redesignaion Request/Maintenance Plan

e. Exceptional Event Documentation

During the summer of 2008, wild fires resulted in high PM2.5 concentrations in northern 

and central California. Between June 22 and July 19, 2008, the Yuba City-Almond 

Street monitoring site captured 17 days with concentrations so high that they would 

have been considered for the selection of the 98th percentile for 2008, even though the 

typical concentrations for this time of the year are between 5 and 10 μg/m3. With 321 

data points collected in 2008, the 7th highest value would correspond to a 98th

percentile. Table IV-3 illustrates the top 30 concentrations for 2008, including 17 

concentrations that were captured during the wildfires. Table IV-3 also shows that all 17 

days affected by the fires have to be excluded from 98th percentile selection in order to 

reach the 7th highest value not impacted by the fire. The magnitude of concentrations 

captured during fire is further illustrated in Figure IV-5. These data have been flagged 

in U.S. EPA’s AQS database and the documentation was submitted to U.S. EPA on 

August 28, 2009

11

.

In addition to the Summer 2008 Northern California Wildfires exceptional event, there 

are two additional exceptional events that the District has requested be flagged in the 

database. The two dates are July 4, 2010, and July 4, 2011. Both of these 

exceedences were caused by firework events. The July 4, 2010, exceptional event 

impacted the 2010 design value by a small amount (17.1 μg/m3vs. 15.9 μg/m3). The 

July 4, 2011, exceptional event did not have an impact on the 2011 design value as the 

98th percentile with or without the event is 37.1 μg/m3. 

Figure IV-5 2008 PM2.5 Concentrations at Yuba City-Almond Street Monitor

 

11 PM2.5 and PM10 Natural Event Document, Summer 2008 Northern California Wildfires, June/July/August 2008, 

August 28, 2009

2008 PM2.5 Concentrations at Yuba

0

20

40

60

80

100

120

140

1/14/082/14/083/14/084/14/085/14/086/14/087/14/088/14/089/14/08

10/14/0811/14/0812/14/08

PM2.5 Concentrations (ug/m3)

Avg24HrNatl

Exceptional Events
Feather River Air Quality Management District April 1, 2013

IV-9 Chapter IV: Air Quality

PM2.5 Redesignaion Request/Maintenance Plan

Table IV-3 Top 30 PM2.5 FRM Concentrations during 2008

Rank (EE Excluded) PM2.5 (μg/m3) Date Exceptional Event

127.3 7/10/08 Summer 2008 Northern California Wildfires

105.5 6/27/08 Summer 2008 Northern California Wildfires

99 7/9/08 Summer 2008 Northern California Wildfires

94 6/25/08 Summer 2008 Northern California Wildfires

68.8 6/24/08 Summer 2008 Northern California Wildfires

68.5 6/26/08 Summer 2008 Northern California Wildfires

1 64.6 10/30/08

54.2 7/7/08 Summer 2008 Northern California Wildfires

45.4 6/23/08 Summer 2008 Northern California Wildfires

34.8 7/5/08 Summer 2008 Northern California Wildfires

31.7 7/8/08 Summer 2008 Northern California Wildfires

2 29.2 11/25/08

29.1 6/28/08 Summer 2008 Northern California Wildfires

29 7/6/08 Summer 2008 Northern California Wildfires

3 26.2 11/23/08

4 25.3 11/26/08

25.1 6/22/08 Summer 2008 Northern California Wildfires

5 25 2/9/08

25 7/19/08 Summer 2008 Northern California Wildfires

24.7 7/1/08 Summer 2008 Northern California Wildfires

24.5 7/4/08 Summer 2008 Northern California Wildfires

24.5 7/11/08 Summer 2008 Northern California Wildfires

6 23.9 1/20/08

7 23.1 1/14/08

22.9 11/15/08

21.7 11/27/08

21.7 11/22/08

21.5 8/14/08

21.2 7/2/08

20.7 2/10/08
Feather River Air Quality Management District April 1, 2013

V-1 Chapter V: Attainment Emission Inventory

PM2.5 Redesignaion Request/Maintenance Plan

V. Emission Inventory

This chapter summarizes emissions that occurred in the Planning Area during the 

attainment year of 2011. This inventory year has been selected to comply with CAA

requirements. The winter inventory has been prepared due to the nature of the PM2.5 

exceedences, as explained in Chapter IV.

The emission inventory is divided into four main categories: stationary sources, area 

sources, off-road mobile sources, and on-road mobile sources. The 2011 stationary 

source emissions are estimated based on reported data from facilities. The area source 

emissions are estimated jointly by ARB and the District. The on-road mobile source 

emissions are calculated using ARB’s EMFAC2011. The off-road mobile source 

emissions in the past were calculated using ARB’s OFFROAD model. The model has 

now been replaced by category specific methods and inventory models, available at 

http://www.arb.ca.gov/msei/categories.htm#offroad_motor_vehicles. For unlisted 

categories, OFFROAD2007 was used to calculate emissions.

Stationary sources are emitters with one or more emission sources at a permitted 

facility with an identified location (e.g. power plant, rice dryer). The District collects 

throughput data annually from all permitted facilities and reports emissions from 

facilities that exceed 10 tons per year of the criteria pollutants carbon monoxide, 

nitrogen oxides, sulfur dioxide, and particulate matter, and emissions that exceed 5 tons 

per year of lead. As of June 12, 2012, the District had 592 active permits, of which 

almost all reside within the Planning Area.

Area sources generally consist of many small emission sources (e.g. residential fuel 

combustion, architectural coatings) which are distributed across the District. Area 

source emissions were developed by ARB and the District. An example of specific 

categories that were updated for this Plan include residential fuel combustion, managed 

burning, pesticides and fertilizers, and paved/unpaved road dust. For more information 

on area source methodologies, visit www.arb.ca.gov. 

Mobile sources include on-road and off-road sources. On-road mobile source 

emissions are calculated using socio-economic data and transportation models provide 

by Sacramento Area Council of Governments (SACOG), and EMFAC2011 inventories 

provided by ARB. The inventory reflects SACOG’s revised activity data from the 

Metropolitan Transportation/Sustainable Communities Strategy Plan for 2035. The offroad mobile source emissions were calculated based on the methodologies listed on 

http://www.arb.ca.gov/msei/categories.htm#offroad_motor_vehicles.

Tables V-1 presents the 2011 winter emission inventory by major source category. 
Feather River Air Quality Management District April 1, 2013

V-2 Chapter V: Attainment Emission Inventory

PM2.5 Redesignaion Request/Maintenance Plan

Table V-1: Summary of Emissions by Major Source Category

2011 Winter Emissions (tons/day)

Emission Source Type PM2.5 NOx ROG NH3 SOx

Stationary 0.87 4.391 4.03 0.36 0.125

Fuel Combustion 0.28 4.38 0.41 0.01 0.13

Waste Disposal 0 0 0 0.35 0

Cleaning & Surface Coating 0.004 0.001 0.77 0 0

Petroleum Production & Marketing 0 0.0001 2.84 0 0

Industrial Processes 0.59 0.011 0.01 0 0.001

Area 3.83 1.09 5.46 4.50 0.15

Solvent Evaporation 0 0 2.22 2.92 0

Misc. Processes Total 3.83 1.09 3.2 1.57 0.15

Residential Fuel Combustion 1.60 0.58 2.13 0.10 0.06

Farming Operations 0.91 0 0.43 1.07 0

Managed Burning & Disposal 0.82 0.51 0.66 0.10 0.09

Other Misc. Processes 0.51 0.001 0.02 0.31 0

On-Road Motor Vehicles 0.27 8.38 2.80 0.19 0.03

Other Mobile 0.88 5.43 2.35 0.002 0.06

Total 5.26 19.29 14.64 5.05 0.35

Mobile sources account for 72% of the NOx emissions and 38% of the ROG emissions 

in 2011. However, mobile sources only account for a small portion of the emissions of 

SOx (23%), PM2.5 (11%), and ammonia (4%).

Stationary sources contribute the most to the SOx inventory at 36%. They account for 

26% of the ROG emissions, 23% of the NOx emissions, 17% of PM2.5 emissions, and 

7% of the ammonia emissions.

Area sources account for the majority of ammonia emissions (89%) and PM2.5 

emissions (72%). The area sources that contribute the most to ammonia emissions are 

solvent evaporation (pesticides and fertilizers). Area sources contribute a smaller 

portion to NOx (5%), ROG (36%), and SOx (41%).

The Planning Area observes the highest concentrations of PM2.5 during the winter 

months. Area sources contribute the greatest portion of directly emitted PM2.5 during 

the winter (72%). Figure V-2 provides the contribution of the major area sources to the 

2011 winter emission inventory. Of the major area sources, residential fuel combustion 

accounts for 42% of the PM2.5. Managed burning accounts for 24% and farming 

operations account for 21%. 

Area sources also account for the greatest portion of ammonia emissions (89%). Figure 

V-3 provides the contribution of the major area sources to the 2011 winter emission 

inventory. The majority of the winter ammonia emissions are due to solvent 

evaporation, specifically pesticides and fertilizers, which account for 65% of the 

emissions. Farming operations account for 24% of the winter ammonia emissions.
Feather River Air Quality Management District April 1, 2013

V-3 Chapter V: Attainment Emission Inventory

PM2.5 Redesignaion Request/Maintenance Plan

Figure V-1: Contribution by Source Category to 2011 Winter Emissions

 

 

 

 

23%

5%

42%

30%

NOx Emissions: 19.29 tons/day

26%

36%

18%

20%

ROG Emissions: 14.64 tons/day

17%

72%

5% 6%

PM2.5 Emissions: 5.26 tons/day

36%

41%

7%

16%

SOx Emissions: 0.35 tons/day 

7%

89%

4% 0%

NH3 Emissions: 5.05 tons/day

38%

38%

7%

17% Stationary Sources

Area Sources

On-Road Motor Vehicles

Other Mobile Sources
Feather River Air Quality Management District April 1, 2013

V-4 Chapter V: Attainment Emission Inventory

PM2.5 Redesignaion Request/Maintenance Plan

Figure V-2: Contribution of Major Area Sources to Winter PM2.5 Emission Inventory

Figure V-3: Contribution of Major Area Sources to Winter NH3 Emission Inventory

42%

24%

21%

13%

Area Source PM2.5 Emissions: 3.83 tons/year

Residential Fuel

Combustion

Farming Operations

Managed Burning &

Disposal

Other Misc Processes

65%

2%

24%

2%

7%

Area Source NH3 Emissions: 4.50 tons/day

Solvent Evaporation

Residential Fuel

Combusion

Farming Operations

Mananged Burning &

Disposal

Other Misc Processes
Feather River Air Quality Management District April 1, 2013

VI-1 Chapter VI: Maintenance Demonstration

PM2.5 Redesignation Request/Maintenance Plan

VI. Maintenance Demonstration

The required Maintenance Plan must provide for maintenance of the air quality in the 

affected area for 10 years after the USEPA’s expected approval. To achieve this, the 

District and ARB developed an inventory for the attainment year 2011, and developed 

projections for an intermediate year of 2017 and the final year of the maintenance 

period, 2024. The attainment year, intermediate year, and final year inventories use 

winter-time emissions due to the seasonality of the PM2.5 exceedences, as described in 

Chapters IV and V. The maintenance demonstration includes emissions of directly 

emitted PM2.5, NOx, and SOx.

The EPA PM2.5 implementation rule specifies that a precursor is considered “significant” 

for control strategy development purposes when a significant reduction in the emission 

of that precursor pollutant leads to a significant decrease in PM2.5 concentration. Such 

pollutants are known as “PM2.5 attainment plan precursors” (72 FR 20586). The PM2.5 

implementation rule also established a presumption that PM2.5, NOx, and SOx are 

attainment plan precursors, while VOCs and ammonia are not unless they are needed 

for attainment demonstration or are significant for maintaining the NAAQS. Since the

area has maintained the standard for the past four years, without additional VOCs or 

ammonia controls, these two precursors are not significant in order for the area to 

maintain the NAAQS. Therefore, the maintenance demonstration includes emissions of 

direct PM2.5, SOx, and NOx. The emission projections for 2017 and 2024 are presented 

in Table VI-1. The change in emissions from 2011 to 2024 is presented in Table VI-2.

The District issues emission reduction credits (ERCs) for pollutant emission reductions 

due to equipment shutdown or voluntary control. These ERCs may then be used as 

“offsets” to compensate for an increase in emissions from a new or modified major 

emission source regulated by the District. Since ERCs represent potential emissions, 

they need to be taken into account in the future emission inventories. To ensure that 

the use of ERCs will not jeopardize the District’s PM2.5 maintenance goals, the amount 

of ERCs issued for reductions of NOx, SOx, and PM10 that occurred prior to 2011 are 

added to the emission inventory projections for 2017 and 2024 in the maintenance 

demonstration. The District only issues ERCs for PM10 and has not identified the PM2.5 

portion of the ERC. When creating the future year inventories for the Maintenance 

Demonstration, the District applied the amount of PM10 ERCs to the future year 

inventories of PM2.5. As PM2.5 is a portion of PM10, this approach conservatively 

estimates the maximum pollutant increase if all ERCs were redeemed within the District 

during the Maintenance Period.
Feather River Air Quality Management District April 1, 2013

VI-2 Chapter VI: Maintenance Demonstration

PM2.5 Redesignation Request/Maintenance Plan

Table VI-1: Projected Wintertime Emissions for Maintenance Demonstration, tons/day

PM2.5 NOx SOx

Emission Source Type 2017 2024 2017 2024 2017 2024

Stationary 1.045 1.125 4.772 4.324 0.237 0.239

Fuel Combustion 0.286 0.269 4.755 4.306 0.234 0.235

Waste Disposal 0 0 0 0 0 0

Cleaning & Surface Coating 0.005 0.006 0.001 0.001 0 0

Petroleum Production & Marketing 0 0 0 0 0 0

Industrial Processes 0.754 0.850 0.016 0.019 0.003 0.004

Area 4.073 3.964 1.279 1.275 0.252 0.247

Solvent Evaporation 0 0 0 0 0 0

Misc. Processes Total 4.073 3.964 1.279 1.275 0.252 0.247

Residential Fuel Combustion 1.698 1.656 0.705 0.718 0.083 0.084

Farming Operations 0.932 0.878 0 0 0 0

Managed Burning & Disposal 0.854 0.823 0.573 0.556 0.169 0.163

Other Misc. Processes 0.589 0.607 0.001 0.001 0 0

On-Road Motor Vehicles* 0.2 0.2 5.3 3.1 0.028 0.028

Other Mobile 0.218 0.144 4.618 3.359 0.056 0.057

Total 5.536 5.433 15.969 12.058 0.574 0.571

ERC’s That Have Been Included in the 

Above Inventory: 1.292 1.292 0.888 0.888 0.224 0.224

*On-Road Motor Vehicle PM2.5 and NOx inventory has been replaced with Motor Vehicle Emission 

Budgets

Table VI-2: Projected Change by Pollutant, tons/day

Pollutant 2011 2017 2024 Projected Change % Change

NOx 19.287 15.969 12.058 - 7.229 - 37%

PM2.5 5.259 5.536 5.433 + 0.174 + 3%

SOx 0.354 0.574 0.571 + 0.217 + 61%

Emissions of NOx are projected to decline by 37% between 2011 and 2024. However, 

emissions of SOx and directly emitted PM2.5 are projected to rise by 61% and 3%, 

respectively. Therefore, further evaluation was needed to determine whether the area 

would continue to meet the standard in 2024.

The combined impact of the decrease in NOx emissions and the increase in SOx and 

PM2.5 emissions was considered according to the air quality impact of the respective 

pollutants on the nonattainment area. The speciation data collected from the Yuba CityAlmond Street monitor was used to determine the relative contribution toward the 2011 

design value, as shown in Table VI-3.
Feather River Air Quality Management District April 1, 2013

VI-3 Chapter VI: Maintenance Demonstration

PM2.5 Redesignation Request/Maintenance Plan

Table VI-3: Contribution toward 2011 Design Value

Percent 

of mass

Contribution toward 

2011 DV of 27 μg/m3

Carbonaceous aerosols 54% 14.6 μg/m3

Nitrate 38% 10.3 μg/m3

Sulfate 6% 1.6 μg/m3

Crustal material 2% 0.5 μg/m3

Assuming that all of the carbonaceous aerosols and crustal material are from directly 

emitted PM2.5, the projected increase in direct PM2.5 emissions will cause a 

corresponding 3% or 0.45 μg/m3increase in the ambient concentrations of direct PM2.5 

component. The projected 61% increase in SOx would increase the sulfate 

contribution from 1.6 μg/m3to 2.6 μg/m3. The projected 37% reduction in NOx will 

cause a corresponding 3.8 μg/m3decrease in the design value concentrations. The 

overall impact to the 2024 design value is expected to be a decrease of 2.4 μg/m3, from 

27 μg/m3to 24.6 μg/m3, which is well below the standard of 35 μg/m3. Therefore, 

maintenance of the standard is demonstrated. The resultant changes to the 2024 

design value are summarized in Table VI-4.

Table VI-4: Projected Pollutant Impact to 2024 Design Value

Pollutant Contribution 

toward 2011 DV

Change from 

2011 to 2024

Resultant change to 

2024 DV

Directly emitted 

PM2.5

15.1 μg/m3 +3% Increase by 0.45 μg/m3

SOx 1.6 μg/m3 +61% Increase by 1.0 μg/m3

NOx 10.3 μg/m3-37% Decrease by 3.8 μg/m3

Overall change to 2024 design value expected Decrease by 2.4 μg/m3

In addition, the application of PM10 ERCs to the future year inventories overestimates 

the amount of PM2.5 in 2017 and 2024 should every ERC be redeemed.

a. Control Strategy

To prevent new facilities from causing PM2.5 emissions impact on the Yuba CityMarysville area, any new facilities that may emit PM2.5 will be subject to the District’s 

New Source Review rule (Rule 10.1). New major sources of PM2.5 would be required to 

implement Best Available Control Technology, and supply offsets for emissions 

increases. After the area is redesignated to attainment, new and modified major 

sources with significant PM2.5 emissions may be subject to Prevention of Significant 

Deterioration (PSD) permitting requirements and review (40 CFR 51.166 and 52.21). 

Additionally, Table VI-5 shows District rules and regulations adopted or amended since 

designation that control sources of PM2.5.
Feather River Air Quality Management District April 1, 2013

VI-4 Chapter VI: Maintenance Demonstration

PM2.5 Redesignation Request/Maintenance Plan

Table VI-5 District PM2.5 Rules and Regulations Adopted/Amended Since Nonattainment Designation

Rule Version Title Description

2.0.F.1

10/6/2008

Open Burning Prohibits open fires for purpose of disposal or waste or other material.

2.0.F.2 Open Burning Prohibits sources of air pollution from causing a nuisance to the public 

or endangering public health and safety.

2.0.H Open Burning Requires permits for any open burning.

2.0.J Open Burning Restricts agricultural burning hours based on air quality conditions.

2.0.J.7 Open Burning Requires Rice Straw Burning to comply with Smoke Management 

Program.

2.0.J.8 Open Burning

Requires Wildland vegetation and forest management burning to 

comply with Sacramento Valley Air Basin Smoke Management 

Program.

2.0.L.3 Open Burning Limits Residential burning to specific days providing it is a permissible 

burn day.

2.0.L.4 Open Burning Limits Residential burning to specific hours providing it is a 

permissible burn day.

3.17 October 

2009

Wood Heating 

Devices

Requires newly installed residential wood heating devices to meet 

EPA Phase II emission standards. Also establishes voluntary no-burn 

advisory program. Also prohibits burning unseasoned wood

3.19 6/6/2011 Vehicle & Mobile 

Equipment Coating Limits particulate matter emissions by requiring spray booths.

The ARB has also adopted measures to reduce direct emissions of PM2.5 as well as 

precursor emissions. These measures are described in Table VI-6.
Feather River Air Quality Management District April 1, 2013

VI-5 Chapter VI: Maintenance Demonstration

PM2.5 Redesignation Request/Maintenance Plan

Table VI-6 State Strategy that Provides PM2.5 Reductions

Agency Actions Implementation

Passenger Vehicles

Smog Check Improvements BAR 2007-2009 2008-2010;20131

Expanded Vehicle Retirement (AB 118) ARB/BAR 2007 2009

Trucks

Modifications to Reformulated Gasoline Program ARB 2007 2010

Cleaner In-Use Heavy-Duty Trucks ARB 2007, 2008, 2010 2011-2015

Goods Movement Sources

Auxiliary Ship Engine Cold Ironing & Other Clean Tech

EPA/ARB/

Local

2007, 2008 2010

Cleaner Main Ship Engines and Fuel2Fuel: 2008-2011 2009-2015

Engines: 2008 2011

Port Truck Modernization ARB, Local 2007,2008,

2010

2008-2020

Accelerated Intro. of Cleaner Line-Haul Locomotives3EPA/ARB 2008 2012

Clean Up Existing Harbor Craft ARB 2007, 2010 2009-2018

Off-Road Equipment

Cleaner In-Use Off-Road Equipment4ARB 2007, 2010 2009

Other Off-Road Sources

New Emission Standards for Recreational Boats5ARB See notes See notes

Expanded Off-Road Recreational Vehicle Emission 

Standards5

ARB See notes See notes

Enhanced Vapor Recovery for Above-Ground Storage 

Tanks

ARB 2008 2009-2016

Additional Evaporative Emission Standards52009 2010-2012

See notes See notes

Areawide Sources

Consumer Products Program ARB 2008 2010

2009 2013-2014

2011 2014

Pesticide Regulation DPR 2008, 2009 2009

1

In 2010, the State Legislature improved the effectiveness of the Smog Check program (AB 2289), 

requiring the Bureau of Automotive Repair to direct older vehicles to high performing auto technicians and 

test stations for inspection and certification. This new program will be effective in 2013.

2 In July 2008, ARB adopted a regulation that applies to ships operating within 24 nautical miles (nm) of 

the California Coastline and visiting California ports. These vessels must use less polluting marine 

distillate fuel for their main engines, auxiliary engines, and boilers instead of heavy fuel oil. The first phase 

of cleaner fuel for ship main engines took effect in 2009, with a second phase currently scheduled in 

2012. By 2015, the International Maritime Organization's fuel sulfur requirements for the North American 

Emission Control Area will match ARB’s phase 2 standards and extend out to 200 miles from California 

Coastline.

3

In 2008, ARB awarded Prop 1B bond funds to upgrade line-haul locomotive engines not already 

accounted for by enforceable agreements with the railroads. Those cleaner line-hauls will begin operation 

by 2012.

4Reductions begin in 2014.

5 Expected action in 2013, with implementation schedules to be determined in rulemaking process.
Feather River Air Quality Management District April 1, 2013

VII-1 Chapter VII: Contingency Measures

PM2.5 Redesignation Request/Maintenance Plan

VII. Maintenance Plan Contingency Measures 

a. Measures to be adopted and “action level”

The District will use the 24-hour design value as the contingency plan trigger. The 

action levels will be prompted by the monitored levels at the Yuba City-Almond Street 

monitoring station. In the event that the 24-hour design value (the 3-year average of the 

98th percentile) at this site exceeds the level of the 2006 PM2.5 NAAQS, within 60 days 

the District shall commence analyses including meteorological evaluation of high PM2.5 

days and emissions inventory assessment. The analyses will also include whether the 

exceedence was caused by an exceptional event or an instrument malfunction.

Once the analyses are complete, the District will consult with interested parties, 

community organizations, and industry to identify voluntary and incentive based 

measures to reduce directly emitted PM2.5 or precursors that can be implemented prior 

to the next January 1. The District will make its analyses and summary of voluntary 

measures available to the public at a Board Meeting.

If it is determined that the violation or exceedence occurred due to sources within the 

District, then by November 1 of the year following the year in which the trigger has been 

activated, the District will complete sufficient analyses to begin adoption of necessary 

rules for ensuring attainment and maintenance of the 24-hour PM2.5 NAAQS. If new

rules are necessary, then they would be adopted by the following August 31. Each 

adopted rule will include a schedule that will require compliance with the rule no later 

than 2 years after adoption of the rule.

The measures that will be considered for adoption upon a trigger of the contingency 

plan include: Reasonably Available Control Technology on stationary sources in the 

nonattainment area, open burning restrictions, fugitive dust and opacity restrictions, and 

restrictions on residential wood burning devices.

b. Commitment to continue to operate monitoring network

The existing PM2.5 monitoring network in the Yuba City-Marysville nonattainment area 

includes a PM2.5 FRM monitor located at 773 Almond Street in Yuba City operating on a 

daily schedule and a non-Federal Equivalence Method (non-FEM) Beta Attenuation 

Monitor (BAM) running in parallel to the FRM. The two instruments complement each 

other in the monitoring network as the FRM monitor provides accurate and precise data 

for purposes of area designation, while the BAM provides real time data used for Air 

Quality Index reporting, forecasting, and the allocation of agricultural burning. The 

District is committed to working with the ARB in the continued operation of the Yuba 

City-Almond Street monitoring station and maintaining compliance with federal law on 

Ambient Air Quality Surveillance (40 CFR Part 58).

c. Verification of Continued Attainment

The ARB is responsible for monitoring PM2.5 in the Yuba City-Marysville Planning Area. 

The ARB also oversees the quality assurance of PM2.5 data and submits annual 
Feather River Air Quality Management District April 1, 2013

VII-2 Chapter VII: Contingency Measures

PM2.5 Redesignation Request/Maintenance Plan

monitoring network plans to the EPA on behalf of the District. The ARB commits to 

maintaining an appropriate PM2.5 monitoring network through the maintenance period, 

with any potential changes to be developed in collaboration with the EPA and subject to 

stakeholder review. To verify continued attainment of the PM2.5 standard, the ARB will 

continue to conduct PM2.5 monitoring and expeditiously review data as it becomes 

available. The District will track the progress of the maintenance plan through the 

acquisition of ambient and source emission data. All permitted stationary sources within 

the District are required to submit annual throughput data that the District uses to 

compile the emission inventory. The District will commit to review the emission 

inventory for unexpected growth in primary PM2.5 or NOx that may jeopardize the 

maintenance of the 2006 PM2.5 NAAQS.

The District develops a comprehensive stationary source emission inventory every three 

years to the ARB for submission under 40 CFR Part 51, Subpart A.
Feather River Air Quality Management District April 1, 2013

VIII-1 Chapter VIII: MVEBs

PM2.5 Redesignation Request/Maintenance Plan

VIII. Motor Vehicle Emission Budgets

Transportation conformity requirements contained in District Rule 10.5-Transportation 

Conformity require that federal actions and federally funded transportation projects 

conform to the State Implementation Plan and that they do not interfere with efforts to 

attain federal air quality standards. 

The Sacramento Area Council of Governments (SACOG) is the local Metropolitan 

Planning Organization (MPO) responsible for making the conformity determinations and 

redeterminations as required in the Planning Area. Table VIII-1 provides the motor 

vehicle emissions budgets (MVEB) which will be used in the conformity process. The 

MVEBs were considered and approved at the February 27, 2013, meeting of the 

Regional Planning Partnership.

Table VIII-1: MVEBs

Pollutant 2017 2024

NOx 5.3 3.1

PM2.5 0.2 0.2

The PM2.5 precursor NOx is presumed to be a significant contributor to the PM2.5 

nonattainment area emissions by the U.S.EPA. The District is establishing MVEB for 

NOx. No MVEB are being established for VOC, SOx, ammonia, or re-entrained road 

dust.

a. Ammonia and VOCs

The PM2.5 implementation rule (72 FR 20586) established a presumption that PM2.5, 

NOx, and SOx are attainment plan precursors, while VOCs and ammonia are not unless 

they are needed for attainment demonstration or are significant for maintaining the 

NAAQS. Since Yuba City-Marysville nonattainment area has maintained the standard 

for the past four years, without additional VOCs or ammonia controls, these two 

precursors are not significant in order for the area to maintain the NAAQS for the next 

ten years. The ammonia and VOCs controls are not needed for demonstrating 

attainment or maintaining the NAAQS, therefore they are not included in the Motor 

Vehicle Emission Budgets for conformity purposes.

b. SOx 

Winter on-road SOx emissions are 0.025 tons per day, which equates to about 7% of 

the total SOx emission inventory. Based on the chemical speciation data12, sulfate 

 

12 Chapter IV section C. Components of PM2.5 in the Planning Area, page 4-5 of this Redesignation 

Request/Maintenance Plan.
Feather River Air Quality Management District April 1, 2013

VIII-2 Chapter VIII: MVEBs

PM2.5 Redesignation Request/Maintenance Plan

comprised 6% of the total mass on high PM2.5 days. Since the on-road portion is only 

7% of the total SOx emissions, it contributes 7% of 6%, or less than 0.5%, of the PM2.5 

mass on the days measuring high PM2.5. As a result, motor vehicle SOx emissions are 

not considered significant and are not included in the motor vehicle emission budgets 

for conformity purposes.

c. Geologic Sources

Re-entrained road dust only needs to be considered in the conformity determination if 

the State air agency and/or the EPA have deemed the pollutant as a significant 

contributor to the PM2.5 nonattainment problem. 

Wintertime paved road dust PM2.5 emissions in 2011 are estimated at 0.13 tons per day, 

which equates to 2.5% of the total PM2.5 emissions. As noted in Chapter IV, all geologic 

and construction source categories combined represent only about 2% of the PM2.5 

concentrations on high days, as represented by the crustal portion of the filter mass. 

Since paved road dust is about 10% of the total geologic and construction emissions 

shown in the area-wide categories in the inventory, the contribution of paved road dust 

to ambient PM2.5 concentration is about 0.2% (assuming that relative ambient

contributions reflect relative emissions contributions). 

Wintertime unpaved road dust PM2.5 emissions in 2011 are 0.16 tons per day or about 

3% of the total PM2.5 emissions. As noted above, all geologic and construction source 

categories combined represent only about 2% of the PM2.5 concentrations on high PM2.5 

days. Since unpaved road dust is about 12% of the geologic and construction 

emissions shown in the area-wide categories in the inventory, the contribution of 

unpaved road dust to ambient PM2.5 concentration is about 0.24% (assuming that 

relative ambient contributions reflect relative emissions contributions).

Since the re-entrained road dust is not a significant contributor to the PM2.5 

nonattainment problem, the District will not be establishing MVEB for this source 

category. An affirmative insignificance finding by EPA only relieves SACOG from a 

regional emissions analysis for re-entrained road dust emissions and does not relieve 

them of the other transportation conformity requirements.

Total construction and demolition direct PM2.5 emissions are 0.08 tons per day during 

winter or about 2% of the total PM2.5 emissions. As noted above, all geologic and 

construction source categories combined represent only about 2% of the PM2.5

concentrations on high days. Since construction and demolition is about 6% of the 

geologic and construction emissions shown in the area-wide categories in the inventory, 

the contribution of construction and demolition to ambient PM2.5 concentration is about 

0.12% (assuming that relative ambient contributions reflect relative emissions 

contributions).
Feather River Air Quality Management District April 1, 2013

VIII-3 Chapter VIII: MVEBs

PM2.5 Redesignation Request/Maintenance Plan

Table VIII-2 summarizes the geologic source emission inventory for 2011 and projected 

inventories for 2017 and 2024, and their contributions to the crustal portion of observed 

PM2.5 and the PM2.5 inventory as a whole. Due to their small contribution to PM2.5 

emissions in the Planning Area, geologic sources are not considered in the conformity 

determination.

Table VIII-2: Geologic Sources’ Contribution to PM2.5

SUMMARY CATEGORY NAME 2011 2017 2024

Farming Operations 0.913 0.932 0.878

Construction and Demolition 0.08 0.091 0.092

Paved Road Dust 0.132 0.175 0.192

Unpaved Road Dust 0.162 0.173 0.17

Fugitive Windblown Dust 0.084 0.088 0.085

All geologic sources-Winter 1.371 1.459 1.417

All PM2.5 sources-Winter 5.259 5.507 5.406

Paved Road Dust as % of Crustal 10 12 14

Paved Road Dust as % of Winter PM2.5 

Emissions 2.5 3.2 3.6

Unpaved Road Dust as % of Crustal 12 12 12

Unpaved Road Dust as % of Winter PM2.5 

Emissions 3.1 3.1 3.1

Construction Dust as % of Crustal 6 6 6

Construction Dust as % of Winter PM2.5 

Emissions 1.5 1.7 1.7
Feather River Air Quality Management District April 1, 2013

IX-1 Chapter IX: Conclusion

PM2.5 Redesignation Request/Maintenance Plan

IX. Conclusion

The Yuba City-Marysville Nonattainment area attained the 2006 24-hour PM2.5 standard 

during the 2006-2008 monitoring period, and continued to monitor attainment through 

2011. The determination is based on complete, quality assured, and certified 

monitoring data from the Yuba City-Almond Street monitor.

The area has attained the standard through the implementation of permanent and 

enforceable measures adopted by the Feather River Air Quality Management District 

and the California Air Resources Board.

The area demonstrates maintenance of the standard for ten years through the 

development of future year inventories and projecting the resultant pollutant 

contributions to future PM2.5 concentrations.

The Maintenance Plan has been prepared to incorporate all of the requirements in 

section 175A of the CAA. The District requests that EPA find all of the requirements 

applicable under section 110 and Part D are met and redesignate the Yuba CityMarysville area to attainment for the 2006 24-hour PM2.5 NAAQS.
Feather River Air Quality Management District April 1, 2013

A-1 Appendix A

PM2.5 Redesignation Request/Maintenance Plan

Appendix A

Yuba City-Marysville CA Nonattainment Area (as defined in 74 FR 58688)

Sutter County- All

Yuba County-That portion of Yuba County which lies west of the line described as 

follows: (Mount Diablo Base and Meridian) Beginning at the intersection of the YubaNevada county line and the range line common to ranges R7E and R8E, north to the 

southeast corner of township T18N R7E, then west along the township line common to 

T17N and T18N, then north along the range line common to ranges R6E and R7E, then 

west along the township line common to T19N and T18N to the Yuba-Butte County 

boundary.
Feather River Air Quality Management District April 1, 2013

B-1 Appendix B

PM2.5 Redesignation Request/Maintenance Plan

Appendix B: Emission Inventory

Table B-1 2011 Inventory

EIC SUMMARY CATEGORY NAME PM2.5 NOx ROG NH3 SOx

10 ELECTRIC UTILITIES 0.1129 0.9663 0.0495 0 0.0282

20 COGENERATION 0.0021 0.0046 0.0003 0 0.0002

30 OIL AND GAS PRODUCTION (COMBUSTION) 0.0418 1.7996 0.2646 0 0.0012

50 MANUFACTURING AND INDUSTRIAL 0.0179 0.5476 0.0194 0 0.0589

52 FOOD AND AGRICULTURAL PROCESSING 0.0224 0.4779 0.0409 0 0.0027

60 SERVICE AND COMMERCIAL 0.0756 0.3814 0.0331 0 0.0217

99 OTHER (FUEL COMBUSTION) 0.0069 0.2017 0.0038 0.0098 0.0111

110 SEWAGE TREATMENT 0 0 0 0.0018 0

120 LANDFILLS 0 0 0 0.0326 0

199 OTHER (WASTE DISPOSAL) 0 0 0 0.3133 0

210 LAUNDERING 0 0 0.0081 0 0

220 DEGREASING 0 0 0.2601 0 0

230 COATINGS AND RELATED PROCESS SOLVENTS 0.0042 0 0.299 0 0

240 PRINTING 0 0 0.0188 0 0

250 ADHESIVES AND SEALANTS 0 0 0.0366 0 0

299 OTHER (CLEANING AND SURFACE COATINGS) 0.0002 0.0007 0.1443 0 0

310 OIL AND GAS PRODUCTION 0 0.0001 2.4634 0 0

320 PETROLEUM REFINING 0 0 0.0139 0 0

330 PETROLEUM MARKETING 0 0 0.356 0 0

399 OTHER (PETROLEUM PRODUCTION AND MARKETING) 0 0 0.0075 0 0

410 CHEMICAL 0 0 0.0001 0 0

420 FOOD AND AGRICULTURE 0.3985 0 0.0058 0 0

430 MINERAL PROCESSES 0.0938 0.0109 0 0 0.0014

450 WOOD AND PAPER 0.0806 0 0 0 0

499 OTHER (INDUSTRIAL PROCESSES) 0.0163 0 0 0 0

510 CONSUMER PRODUCTS 0 0 0.9553 0 0

520 ARCHITECTURAL COATINGS AND RELATED PROCESS SOLVENTS 0 0 0.4725 0 0

530 PESTICIDES/FERTILIZERS 0 0 0.1927 2.9231 0

540 ASPHALT PAVING / ROOFING 0 0 0.6042 0 0

610 RESIDENTIAL FUEL COMBUSTION 1.5909 0.5788 2.1301 0.0971 0.0551

620 FARMING OPERATIONS 0.9125 0 0.4316 1.0661 0

630 CONSTRUCTION AND DEMOLITION 0.0803 0 0 0 0

640 PAVED ROAD DUST 0.132 0 0 0 0

645 UNPAVED ROAD DUST 0.162 0 0 0 0

650 FUGITIVE WINDBLOWN DUST 0.084 0 0 0 0

660 FIRES 0.003 0.0006 0.002 0 0

670 MANAGED BURNING AND DISPOSAL 0.8155 0.5082 0.6564 0.0994 0.0927

690 COOKING 0.0486 0 0.0179 0 0

699 OTHER (MISCELLANEOUS PROCESSES) 0 0 0 0.3088 0

710 LIGHT DUTY PASSENGER (LDA) 0.0396 0.6751 0.7538 0.0597 0.0063

722 LIGHT DUTY TRUCKS - 1 (LDT1) 0.0045 0.1342 0.1989 0.0063 0.0007

723 LIGHT DUTY TRUCKS - 2 (LDT2) 0.0201 0.74 0.5654 0.0432 0.0042

724 MEDIUM DUTY TRUCKS (MDV) 0.0174 0.7769 0.487 0.0547 0.0047

732 LIGHT HEAVY DUTY GAS TRUCKS - 1 (LHDV1) 0.0038 0.2487 0.2061 0.0168 0.0016

733 LIGHT HEAVY DUTY GAS TRUCKS - 2 (LHDV2) 0.0002 0.014 0.013 0.0012 0.0001

734 MEDIUM HEAVY DUTY GAS TRUCKS (MHDV) 0.0002 0.0453 0.0729 0.0005 0

736 HEAVY HEAVY DUTY GAS TRUCKS (HHDV) 0 0.0283 0.0232 0.0002 0

742 LIGHT HEAVY DUTY DIESEL TRUCKS - 1 (LHDV1) 0.0175 1.0665 0.0497 0.0006 0.001

743 LIGHT HEAVY DUTY DIESEL TRUCKS - 2 (LHDV2) 0.0026 0.1526 0.0068 0 0.0002
Feather River Air Quality Management District April 1, 2013

B-2 Appendix B

PM2.5 Redesignation Request/Maintenance Plan

PM2.5 NOx ROG NH3 SOx

744 MEDIUM HEAVY DUTY DIESEL TRUCKS (MHDV) 0.028 0.7189 0.0391 0.0018 0.0009

746 HEAVY HEAVY DUTY DIESEL TRUCKS (HHDV) 0.1273 3.5449 0.2071 0.0067 0.0048

750 MOTORCYCLES (MCY) 0.0005 0.0468 0.1533 0.0002 0

760 HEAVY DUTY DIESEL URBAN BUSES (UB) 0.0017 0.0325 0.0012 0.0001 0.0001

762 HEAVY DUTY GAS URBAN BUSES (UB) 0 0.0084 0.0026 0 0

771 SCHOOL BUSES - GAS (SBG) 0 0.0032 0.0029 0 0

772 SCHOOL BUSES - DIESEL (SBD) 0.0029 0.0481 0.0031 0.0001 0

777 OTHER BUSES - GAS (OBG) 0 0.0083 0.0061 0.0001 0

778 OTHER BUSES - MOTOR COACH - DIESEL (OBC) 0.0008 0.0266 0.0015 0 0

779 ALL OTHER BUSES - DIESEL (OBD) 0.0008 0.0185 0.0012 0 0

780 MOTOR HOMES (MH) 0.0009 0.0385 0.0068 0.0004 0

810 AIRCRAFT 0.039 0.3706 0.7743 0 0.0519

820 TRAINS 0.0323 1.2534 0.0791 0 0.001

840 RECREATIONAL BOATS 0.0145 0.0536 0.2755 0 0

850 OFF-ROAD RECREATIONAL VEHICLES 0.0012 0.0054 0.1572 0 0

860 OFF-ROAD EQUIPMENT 0.0586 1.1788 0.4488 0.0001 0.0003

870 FARM EQUIPMENT 0.1424 2.5708 0.5383 0.0019 0.0028

890 FUEL STORAGE AND HANDLING 0 0 0.076 0 0

GRAND TOTAL FOR Yuba City-Marysville PM2.5 Nonattainment Area 5.2589 19.2873 14.6386 5.0466 0.3539
Feather River Air Quality Management District April 1, 2013

B-3 Appendix B

PM2.5 Redesignation Request/Maintenance Plan

Table B-2: 2017 Projected Inventory

EIC SUMMARY CATEGORY NAME PM2.5 NOx SOx

10 ELECTRIC UTILITIES 0.1166 1.0841 0.0508

20 COGENERATION 0.0024 0.0073 0.0004

30 OIL AND GAS PRODUCTION (COMBUSTION) 0.0401 2.0267 0.0021

50 MANUFACTURING AND INDUSTRIAL 0.0196 0.6539 0.113

52 FOOD AND AGRICULTURAL PROCESSING 0.0129 0.2852 0.0021

60 SERVICE AND COMMERCIAL 0.0861 0.4712 0.0428

99 OTHER (FUEL COMBUSTION) 0.008 0.2262 0.0228

110 SEWAGE TREATMENT 0 0 0

120 LANDFILLS 0 0 0

199 OTHER (WASTE DISPOSAL) 0 0 0

210 LAUNDERING 0 0 0

220 DEGREASING 0 0 0

230 COATINGS AND RELATED PROCESS SOLVENTS 0.0052 0 0

240 PRINTING 0 0 0

250 ADHESIVES AND SEALANTS 0 0 0

299 OTHER (CLEANING AND SURFACE COATINGS) 0.0002 0.0008 0

310 OIL AND GAS PRODUCTION 0 0.0001 0

320 PETROLEUM REFINING 0 0 0

330 PETROLEUM MARKETING 0 0 0

399 OTHER (PETROLEUM PRODUCTION AND MARKETING) 0 0 0

410 CHEMICAL 0 0 0

420 FOOD AND AGRICULTURE 0.4928 0 0

430 MINERAL PROCESSES 0.1307 0.0162 0.0035

450 WOOD AND PAPER 0.0977 0 0

499 OTHER (INDUSTRIAL PROCESSES) 0.0323 0 0

510 CONSUMER PRODUCTS 0 0 0

520 ARCHITECTURAL COATINGS AND RELATED PROCESS SOLVENTS 0 0 0

530 PESTICIDES/FERTILIZERS 0 0 0

540 ASPHALT PAVING / ROOFING 0 0 0

610 RESIDENTIAL FUEL COMBUSTION 1.6979 0.7053 0.083

620 FARMING OPERATIONS 0.9317 0 0

630 CONSTRUCTION AND DEMOLITION 0.091 0 0

640 PAVED ROAD DUST 0.1752 0 0

645 UNPAVED ROAD DUST 0.1732 0 0

650 FUGITIVE WINDBLOWN DUST 0.0885 0 0

660 FIRES 0.0041 0.001 0

670 MANAGED BURNING AND DISPOSAL 0.8538 0.5728 0.1688

690 COOKING 0.0578 0 0

699 OTHER (MISCELLANEOUS PROCESSES) 0 0 0

ON-ROAD MOTOR VEHICLES* 0.2 5.3 0.028

810 AIRCRAFT 0.039 0.3704 0.0518

820 TRAINS 0.0303 1.3433 0.0014

840 RECREATIONAL BOATS 0.0115 0.0522 0

850 OFF-ROAD RECREATIONAL VEHICLES 0.0012 0.0067 0

860 OFF-ROAD EQUIPMENT 0.0535 1.1912 0.0003

870 FARM EQUIPMENT 0.0827 1.6541 0.0028

890 FUEL STORAGE AND HANDLING 0 0 0

GRAND TOTAL FOR Yuba City-Marysville PM2.5 Nonattainment Area 5.536 15.9687 0.5736

*ON-ROAD MOTOR VEHICLE inventory has been replaced with Motor Vehicle Emission Budgets
Feather River Air Quality Management District April 1, 2013

B-4 Appendix B

PM2.5 Redesignation Request/Maintenance Plan

Table B-3: 2024 Projected Inventory

EIC SUMMARY CATEGORY NAME PM2.5 NOx SOx

10 ELECTRIC UTILITIES 0.1089 1.0276 0.0481

20 COGENERATION 0.0026 0.0086 0.0004

30 OIL AND GAS PRODUCTION (COMBUSTION) 0.0343 1.7016 0.0017

50 MANUFACTURING AND INDUSTRIAL 0.0193 0.6569 0.1142

52 FOOD AND AGRICULTURAL PROCESSING 0.0081 0.2018 0.0014

60 SERVICE AND COMMERCIAL 0.0878 0.4879 0.0444

99 OTHER (FUEL COMBUSTION) 0.0084 0.2198 0.0246

110 SEWAGE TREATMENT 0 0 0

120 LANDFILLS 0 0 0

199 OTHER (WASTE DISPOSAL) 0 0 0

210 LAUNDERING 0 0 0

220 DEGREASING 0 0 0

230 COATINGS AND RELATED PROCESS SOLVENTS 0.0055 0 0

240 PRINTING 0 0 0

250 ADHESIVES AND SEALANTS 0 0 0

299 OTHER (CLEANING AND SURFACE COATINGS) 0.0002 0.0008 0

310 OIL AND GAS PRODUCTION 0 0.0001 0

320 PETROLEUM REFINING 0 0 0

330 PETROLEUM MARKETING 0 0 0

399 OTHER (PETROLEUM PRODUCTION AND MARKETING) 0 0 0

410 CHEMICAL 0 0 0

420 FOOD AND AGRICULTURE 0.5519 0 0

430 MINERAL PROCESSES 0.1528 0.0188 0.0039

450 WOOD AND PAPER 0.0998 0 0

499 OTHER (INDUSTRIAL PROCESSES) 0.0452 0 0

510 CONSUMER PRODUCTS 0 0 0

520 ARCHITECTURAL COATINGS AND RELATED PROCESS SOLVENTS 0 0 0

530 PESTICIDES/FERTILIZERS 0 0 0

540 ASPHALT PAVING / ROOFING 0 0 0

610 RESIDENTIAL FUEL COMBUSTION 1.6562 0.7179 0.0839

620 FARMING OPERATIONS 0.8785 0 0

630 CONSTRUCTION AND DEMOLITION 0.0922 0 0

640 PAVED ROAD DUST 0.1916 0 0

645 UNPAVED ROAD DUST 0.17 0 0

650 FUGITIVE WINDBLOWN DUST 0.0845 0 0

660 FIRES 0.0049 0.0012 0

670 MANAGED BURNING AND DISPOSAL 0.8226 0.5557 0.1632

690 COOKING 0.0637 0 0

699 OTHER (MISCELLANEOUS PROCESSES) 0 0 0

ON-ROAD MOTOR VEHICLES* 0.2 3.1 0.028

810 AIRCRAFT 0.039 0.3704 0.0518

820 TRAINS 0.0239 1.1611 0.0016

840 RECREATIONAL BOATS 0.0089 0.0522 0

850 OFF-ROAD RECREATIONAL VEHICLES 0.0012 0.0083 0

860 OFF-ROAD EQUIPMENT 0.034 0.8445 0.0005

870 FARM EQUIPMENT 0.0368 0.9228 0.0028

890 FUEL STORAGE AND HANDLING 0 0 0

GRAND TOTAL FOR Yuba City-Marysville PM2.5 Nonattainment Area 5.4328 12.058 0.5705

*On-Road Motor Vehicle Inventory has been replaced with Motor Vehicle Emission Budgets