ATTACHMENT C

SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT

PLANNING, RULE DEVELOPMENT, AND AREA SOURCES

FINAL

PM10 REDESIGNATION REQUEST AND 

MAINTENANCE PLAN FOR THE SOUTH 

COAST AIR BASIN

December, 2009
SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT

GOVERNING BOARD

Chairman: WILLIAM A. BURKE, Ed.D.

Speaker of the Assembly Appointee

Vice Chairman: DENNIS YATES

Mayor, City of Chino

Cities Representative, San Bernardino County

MEMBERS:

MICHAEL D. ANTONOVICH

Supervisor, Fifth District

Los Angeles County Representative

MARION ASHLEY

Supervisor, Fifth District

Riverside County Representative

MICHAEL CACCIOTI

Council Member, City of South Pasadena

Cities Representative, Los Angeles County/Eastern Region

BILL CAMPBELL

Supervisor, Third District

Orange County Representative

JANE W. CARNEY

Senate Rules Committee Appointee

RONALD O. LOVERIDGE

Mayor, City of Riverside

Cities Representative, Riverside County

JOSEPH K. LYOU, PH.D.

Governor’s Appointee

JOSIE GONZALES

Supervisor, Fifth District

San Bernardino County Representative

JAN PERRY

Council Member, City of Los Angeles

City of Los Angeles

MIGUEL PULIDO

Mayor, City of Santa Ana

Cities Representative, County of Orange

TONIA REYES URANGA

Council Member, City of Long Beach

Cities Representative, Los Angeles County/Western Region

EXECUTIVE OFFICER:

BARRY R. WALLERSTEIN, D.Env.
South Coast Air Quality Management District

Barry R. Wallerstein, D.Env.

Executive Officer

Elaine Chang, DrPH

Deputy Executive Officer

Planning, Rule Development and Area Sources

Laki Tisopulos, Ph.D., P.E.

Assistant Deputy Executive Officer

Planning, Rule Development and Area Sources

Joseph Cassmassi 

Planning and Rules Manager

Planning, Rule Development and Area Sources

SCAQMD Contributors

Barbara Baird, District Counsel

Philip Fine, Atmospheric Measurements Manager

Xinqiu Zhang, Air Quality Specialist
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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CONTENTS

1.0 PURPOSE

2.0 REDESIGNATION REQUEST

3.0 PM10 MAINTENANCE PLAN

4.0 SUMMARY CHECKLIST

Attachment 1 Data Certifications

Attachment 2 Time Series of Preliminary Continuous Monitored 

PM10 24-Hour Average Concentrations (2005-2007)

Attachment 3 Preliminary 2007 Continuous PM10 Monitoring Data

Attachment 4 PM10 Attainment Demonstration

Attachment 5 U.S. EPA Approval of the South Coast Air Basin PM10 State 

Implementation Plan
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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List of Tables

Table 2-1 Air Quality Monitoring Network Review Summary 8

Table 2-2 South Coast Air Basin Certified PM10: 2005-2007 9

Table 2-3 Summary of Glendora and Mira Loma TEOM PM10 Continuous Monitoring 

Data

14

Table 3-1 2007 AQMP Updated Basin Annual Average Day Baseline Emission 

Inventories (TPD) 

21

Table 3-2 2007 AQMP Updated Basin PM10 Attainment Annual Average Day Baseline

Emission Inventory (TPD) By Particulate Category

22

Table 3-3 PM10 Observed and Predicted Concentrations 23

Table 3-4 2003 AQMP PM10 Basin Transportation Conformity Emissions Budget for 

2003, 2006 and Post Attainment Years (Annual Average Emissions in TPD)

24

Table 3-5 Summary of Predicted 24-Hour Average PM10 Concentrations Assuming an

20 TPD Increase in Baseline Basin PM10 Emissions

26

Table 4-1 Summary Checklist of Document References 30

List of Figures

Figure 1-1 Basin Maximum 24-hour Average PM10 Concentration

(1998-2007)

2

Figure 2-1 Quarterly Average Basin Rainfall Measured at Downtown 

Los Angeles

10

Figure 2-2 Quarterly Average Wind Speed Measured at Ontario Airport 10

Figure 2-3 Standardized Annual Average Basin Daily Maximum PM10 

Potential 

11

Figure 2-4 District 24-Hour Average Glendora TEOM Continuous PM10 (2005-2007) 13

Figure 2-5 District 24-Hour Average Mira Loma TEOM Continuous PM10 (2005-2007) 13

Figure 2-6 Comparison of the 2005-2007 24-Hour Average Rubidoux TEOM 

Continuous PM10 Concentrations with the FRM Selective Sized Inlet (SSI) 

Filter PM10 Measurements

15
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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1.0 PURPOSE

The South Coast Air Basin (Basin) is currently designated as serious nonattainment 

area for 24-hour average PM10. Under the Federal Clean Air Act (CAA), an area 

can be redesignated as attainment if, among other requirements, the U.S. 

Environmental Protection Agency (U.S. EPA) determines that the national ambient 

air quality standards (NAAQS) have been attained. The NAAQS allows for one 

exceedance of the 24-hour average PM10 standard per year averaged over a three

consecutive calendar year period measured at each monitoring site within an area 

based on quality assured Federal Reference Method (FRM) air quality monitoring 

data. 

The Basin has not violated the federal 24-hour PM10 standard (150 μg/m3) during 

the period including 2004 through 2007. Figure 1-1 depicts the recent trend of 

Basin maximum 24-hour average concentrations for the period 2004 through 2008. 

Analysis of the monitoring data indicates that the Basin has not violated the 24-

hour PM10 standard in 2008. Prior to 2006, elevated PM10 events have associated 

with high wind driven dust storms, and wildfires were not flagged for exclusion 

from the NAAQS. Since 2006, dust storms, wildfires and fireworks impacted 

observations have been flagged, documented and excluded from NAAQS 

determination under U.S. EPA’s Exceptional Events Policy. Per the criteria 

specified in the NAAQS, the Basin has been in compliance with the 24-hour PM10

standard from 2006 (based on 2004-2006 data) and has maintained compliance 

since. More specifically, this redesignation request is based on the last complete 

three-year period of PM10 monitoring data including 2005, 2006 and 2007. 

Accordingly, the purpose of this document is to revise the previous PM10 State 

Implementation Plans (SIP) to request redesignation of the Basin to attainment for 

PM10 and to submit the attendant maintenance plan and other required actions to 

qualify for such redesignation by U.S. EPA.

The draft version of this document was made available for public review and 

comment on October 30, 2009. The South Coast Air Quality Management District 

(District) coordinated with other agencies for input and additional comments and 

has made changes in response to the comments in the final PM10 redesignation 

request and proposed maintenance plan, accordingly. As part of the public process, 

regional Public Hearings were held in each of the four counties in the District 

jurisdiction during the week of December 15-18, 2009. 

As noted in Section 3.1 of the maintenance plan, at the request of the California Air 

Resources Board (CARB), the proposed transportation conformity emissions 

budget has been withdrawn from the final plan. CARB will provide the revisions 

to the Basin transportation conformity emissions budget for consideration by the 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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state board in the first quarter of 2010. As required by law, the proposed revised

transportation conformity emissions budget will be noticed 30 days prior to the 

CARB Public Hearing.

FIGURE 1-1

Basin Maximum 24-hour Average PM10 Concentration: 2004 through 2008

(Excluding U.S. EPA Concurred Exceptional Events in 2006 and 2007)

South Coast Air Basin

0

50

100

150

200

2004 2005 2006 2007 2008

ug/m

3

3

Federal Standard
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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2.0 REDESIGNATION REQUEST

The District is requesting redesignation of the Basin from serious nonattainment to 

attainment of the PM10 NAAQS under CAA Section 107 (d)(3)(E) protocol.

Section 107 (d)(3)(E) of the CAA requires the U.S. EPA administrator to make five 

findings prior to granting a request for redesignation:

1. The U.S. EPA has determined that the NAAQS have been attained.

2. The applicable implementation plan has been fully approved by U.S. 

EPA under section 110(k).

3. The U.S. EPA has determined that the improvement in air quality is due 

to permanent and enforceable reductions in emissions.

4. The State has met all applicable requirements for the area under Section 

110 and Part D.

5. The U.S. EPA has fully approved a maintenance plan, including a 

contingency plan, for the area under Section 175A.

As described in the previous section of this document, PM10 air quality in the 

Basin, excluding exceptional events, has not violated the NAAQS for the past 

decade. Section 2.1.1 provides the confirmation that the Basin 2005-2007 PM10 

FRM air quality data is certified, has met quality assurance requirements and has 

attained the NAAQS. (Certification letters are provide in Attachment 1). The 

section offers a supplemental discussion of the three years’ annual meteorological 

profiles with reference to long-term climatic mean conditions as well as trends in 

vehicle miles traveled to further characterize PM10 air quality in light of weather 

variability and regional growth. Section 2.1.2 presents the 2005-2007 Basin PM10 

air quality based on “real-time” Beta Attenuation Monitor (BAM) and Tapered 

Element Oscillating Microbalance (TEOM ) data. The BAM and TEOM monitors 

are not designated as federal equivalent monitors (FEM) and as such, the data 

acquired from the samplers is not used as the basis of the attainment demonstration. 

The data, however, does support the FRM NAAQS attainment finding. 

Furthermore, the BAM and TEOM monitors will provide daily PM10 sampling to 

support the monitoring requirements specified in the maintenance plan presented in 

Sections 3.2 and 3.3. Combined, these analyses satisfy finding number 1 of CAA 

Section 107.

Sections 2.2 and 2.3 characterize the Basin PM10 SIP and provide reference to 

U.S. EPA’s approval of the 2003 SIP including the rules defining the permanent 

and enforceable emissions reductions. Sections 2.4 and 2.5 address the applicable 

requirements under Section 110 Part D and preface the requirements for a 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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maintenance plan. Together these sections directly address and satisfy findings (2, 

3, 4 and 5) of CAA Section 107. 

The following paragraphs provide the additional information necessary for the U.S. 

EPA to make the above findings.

2.1 Attainment of the Standard

According to U.S. EPA guidance, the demonstration of attainment with the PM10 

standard must rely on three complete, consecutive calendar years of quality-assured 

air quality monitoring data collected in accordance with 40 CFR 50, Appendix J. 

The NAAQS allows for one exceedance of the 24-hour PM10 standard per year 

averaged over a three consecutive calendar year period. 

2.2.1 Monitoring Network and Data Certification

The District operates nineteen (19) air quality monitoring stations in the Basin 

where PM10 is monitored in accordance with 40 CFR 50, Appendix J. The 19

stations are components of the twenty one station PM10 District monitoring 

network that is designed to meet the program requirements of National Air 

Monitoring Stations (NAMS) and State and Local Air Monitoring Stations 

(SLAMS) and to provide special monitoring in support of air quality research and 

health studies. PM10 monitoring is conducted at each station using FRM high 

volume filter samplers with a size selective inlet. Each station is designated on the 

basis of the major program requirements as well as the monitoring objective and 

the representative spatial scale of sampling. Table 2-1 lists the 19 air monitoring 

stations that sample PM10 in the Basin, provides the U.S. EPA Aerometric 

Informational Retrieval System (AIRS), and California Air Resources Board 

(CARB) identification numbers, the District identification code, as well as the 

equipment designation, monitoring objectives and monitoring scales. The PM10

monitoring data are subjected to validation and are submitted to CARB and U.S. 

EPA for inclusion in the AIRS data base.

As required by Federal Regulations (40 CFR Part 58), the District conducts an 

annual review of the air quality monitoring network that is forwarded to ARB and 

U.S. EPA for evaluation. In addition, the District provides annual certification to 

U.S. EPA to confirm that the data has been monitored and validated in accordance 

with Federal Regulations and that they are complete and accurate. Certification 

letters to U.S. EPA for the 2005-2007 monitoring years are provided as 

Attachment-1 to this document.
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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2.1.2 Certified Ambient PM10 Air Quality: 2005 - 2007

Table 2-2 provides a summary of the certified ambient PM10 data measured in the 

Basin by the District for the period including 2005 through 2007. Listed for each 

station are the number of days of valid data, the annual maximum 24-hour average 

concentration, the annual number of days exceeding the federal standard and the 

consecutive three-year total number of days exceeding the standard for the 2005–

2007 time period. During the three year period (2005-2007), the PM10 24-hour 

standard was not exceeded in the Basin. The location of the maximum measured

PM10 concentration varied in each of the three years. The 2005 annual maximum 

concentration of 131 μg/m3 was measured at the South Coastal LA County-2

monitor in the city of Long Beach. The annual maximum concentrations for the 

following two years occurred at the Central San Bernardino Valley-1 monitor in 

the city of Fontana in 2006 and at the Mira Loma air monitoring station in 2007. 

The peak 24-hour average concentration measured in each year was 142 μg/m3. 

Data from three days in 2007 were flagged for exceptional events exclusion 

including: April 12th at Perris ( “Santa Ana” high wind event), July 5th at the East 

San Gabriel Valley-1 and Central San Bernardino Valley-1 sites (following the 

Independence Day regional fireworks), and October 21st (high winds and wildfire 

event). Documentation supporting the exceptional event exclusions has been 

publicly noticed and submitted to the California Air Resources Board (CARB) for

review and forwarding to US EPA Region IX for a concurrence determination.

The Basin PM10 24-hour and annual average concentration profiles have been 

extensively characterized in the 2007 Air Quality Management Plan (AQMP). The 

primary 24-hour average PM10 impact occurs in the eastern portion of the Basin in 

areas subjected to fugitive dust from agricultural and dairy activities and secondary 

aerosol formation. The stations that typically report the highest 24-hour average 

PM10 values include Rubidoux, Mira Loma, Perris, and Central San Bernardino 

Valley 1 (Fontana). Approximately 56 percent of the average peak PM10 mass is 

attributable to the fine portion (PM2.5) of the total mass and the coarse portion,

which is dominated by fugitive dust, accounts of the remaining 44 percent. When 

averaged for all Basin PM10 monitoring stations during the 2005-2007 period, the 

annual daily peak concentration was approximately 25 percent higher than the 

second highest measurement. 

The highest PM10 concentrations observed in the Basin are associated with “Santa 

Ana” high wind events, wildfires, and national holiday fireworks demonstrations. 

These days are typically flagged as natural or exceptional events. Santa Ana high 

wind events occur between five and ten times a year. Peak values of PM10 in the 

Basin associated with Santa Ana wind conditions occur in the spring and fall as 

surface high pressure builds into the Great Basin (Northern Nevada) in the wake of 

dry migratory weather systems moving through southern California. In the fall, 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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the high winds accompanied by single digit humidity are also primary contributors 

to wildfire events. 

The beneficial impacts of rainfall to Basin PM10 are twofold: frequent measurable 

rainfall scavenges aerosol particles and wet soil minimizes fugitive dust 

entrainment. Figure 2.1 depicts the quarterly average Basin rainfall for 2005-2007 

and the preceding 15-years (1985-2004). The 2005-2007 second quarter spring 

rainfall roughly doubled the long term average giving rise to a lower than average 

potential for fugitive dust. Spring rains in 2005 contributed significantly to the 

lower average PM10 potential. In contrast, average rainfall during the fall quarter 

of 2005-2007 was significantly lower than average and as a consequence wildfire 

activity increased, particularly in 2005 and 2007. On balance, rainfall during 2005-

2007 in the Basin did not significantly alter the average potential for higher 24-

hour average concentrations of PM10.

Average wind speeds measured at Ontario Airport, located in the eastern half of the 

Basin, provide a second measure of the Basin daily PM10 potential. Higher 

average winds are indicative of more frequent fugitive dust events. Overall, the 

2005-2007 annual 24-hour average surface wind speed of 6.2 mph at Ontario was 

equal to the 1996-2004 historical average. Hourly winds speeds at Ontario have 

been measured by the National Weather Service (NWS) as part of their Automated 

Surface Observation System (ASOS) since 1996. Basin winds in the winter quarter 

(Figure 2-2) for 2005-2007 were higher than the long term average however, these 

were concurrent with higher than average rainfall and thus had little impact for 

enhanced fugitive dust emissions. Spring and summer wind speeds were consistent 

with the long term average while winds for fall were below average, lending to 

stagnation and greater photochemical aerosol formation potential. 

As a component of the PM10 attainment demonstration provided in the 1997 

AQMP, classification and regression tree analysis (CART) was used to categorize 

the daily PM10 readings measured at the Rubidoux air monitoring station. The 

CART analysis was used as the foundation of an index to define the daily PM10 

formation potential solely using meteorological variables. (The meteorological 

variables evaluated stagnation potential, and did not specifically include wind 

speed or rainfall). The daily index was aggregated into a standardized annual 

value and calculated for the years PM10 has been monitored in the Basin (Figure 2-

3) to provide a tool for comparing annual variations in PM10 potential. An index 

of 0.0 represents an average year. 

The standardized index for 2005 was slightly lower than average indicating less 

potential. However, the 2006 index was essentially average and 2007 was 

nominally higher than average. Taken together as a three-year period, 2005-2007 

was essentially average compared to the long-term trend. (Note: the two periods in 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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the standardized trend that exceed “-2” in index value were significantly strong “El 

Nino” weather events that were characterized by enhanced regional dispersion).

Overall, the three measures of meteorological potential (rainfall, wind and 

stagnation) of Basin PM10 formation indicate that the 2005-2007 period was 

consistent with the long-term average and did not contribute to lowering peak 

particulate concentrations. 

Profiles of daily vehicle miles traveled (VMT) in the Basin are provided by 

CARB’s EMFAC2007 emissions model. The EMFAC2007 data indicated that 

daily VMT decreased nominally from 394 million miles in 2005, to 381 million 

miles in 2006 to 368 million miles in 2007. Future year estimates of VMT using 

2005 as a base year, project a growth pattern for the Basin of approximately five 

(5) percent out to 2020 and fifteen (15) percent out to 2030.

Based on the criteria specified in the CAA (which allows for one violation at one 

location in three consecutive years) the Basin has attained the federal standard. 

Furthermore, the analysis shows that the finding of attainment was not biased by 

favorable weather or unusual variations in annual VMT during 2005 through 2007.

2.1.3 Basin PM10 Air Quality From District Operated Continuous Monitors 

The District has operated a network of continuous “real-time” PM10 BAM and 

TEOM monitors in the Basin for more than a decade. The instruments are colocated with the FRM monitors at ten of the monitoring stations. Although these 

monitors are considered an equivalent monitoring methodology to the FRM, the 

District relies solely on the FRM for compliance determination with the federal and 

California PM10 standards. The primary functions of the TEOMs and BAM are to 

measure real-time PM10 concentrations to inform the public and for the issuance of 

health based PM10 advisories. The continuous monitoring data provide supporting 

documentation for compliance and enforcement activities under District Rule 403. 

The data acquired from the network also provides supporting documentations of 

exceptional PM10 events and assists in the characterization of the long-term trends 

of air quality in the Basin.

While the TEOM and BAM monitoring instruments are routinely calibrated, 

subjected to flow checks and are subject to an annual audit, extensive screening of 

the hourly data is not as rigorously performed as for the FRM data. As a 

consequence, isolated hourly concentrations reading zero or depicting substantial 

shifts in concentration or “spikes” from one hour to the following hour are not 

flagged or extracted from the data stream. 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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TABLE 2-1

South Coast Air Basin PM10 Air Quality Monitoring Network Review Summary

Monitoring Location AQS

Station 

No.

ARB 

Station 

No.

SCAQMD 

Site Code

Equipment 

Designation

Objective* Spatial 

Scale**

Los Angeles County

Central LA 060371103 70087 CELA SLAMS RC NS

Southwest Coastal LA County 060375001 70094 HAWT SLAMS RC MS

South Coastal LA County 1 060374002 70072 LGBH SLAMS HC MI

South Coastal LA County 2 060374004 70110 SLGB SLAMS HC MI

East San Fernando Valley 060371002 70069 BURK SLAMS HC NS

East San Gabriel Valley 1 060370002 70060 AZUS SLAMS RC NS

Santa Clarita Valley 060376012 70090 SCLR SLAMS RC NS

Orange County

Central Orange County 060590001 30176 ANAH NAMS RC NS

Saddleback Valley 1 060592022 30812 MSVJ SLAMS RC NS

Riverside County

Norco/Corona 060650003 33155 NORC SLAMS RC NS

Metropolitan Riverside County 1 060658001 33144 RIVR SLAMS HC NS

Mira Loma 060658005 33165 MLOM SPECIAL HC NS

Perris Valley 060656001 33149 PERI SPECIAL RC NS

Banning Airport 060650012 33164 BNAP SPECIAL RC NS

San Bernardino County

Southwest San Bernardino Valley 060710025 36025 ONFS SPECIAL HC NS

Central San Bernardino Valley 1 060712002 36197 FONT NAMS HC NS

Central San Bernardino Valley 2 060719004 36202 SNBO NAMS RC NS

East San Bernardino Valley 060714003 36203 REDL NAMS RC NS

Central San Bernardino Mountains 060710005 32181 CRES NAMS RC NS

* RC - Representative Concentrations, HC - High Concentrations

** MI - Microscale, MI - Middle Scale, NS - Neighborhood Scale
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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TABLE 2-2

South Coast Air Basin Certified PM10: 2005-2007

Monitoring Location Maximum 24-Hour 

Average Concentration 

(μg/m3)

Number of Samples Number of Days 

Exceeding Federal 24-

Hour Average Standard 

(≥150 (μg/m3)

Three-Year Total 

Number of Days 

Exceeding the Standard

2005 2006 2007 2005 2006 2007 2005 2006 2007 2005-2007

Los Angeles County

Central LA 70 59 78 61 59 56 0 0 0 0

Southwest Coastal LA County 44 45 128 54 51 56 0 0 0** 0

South Coastal LA County 1 66 78 75 59 61 57 0 0 0 0

South Coastal LA County 2 131 117 123 59 58 29* 0 0 0 0

East San Fernando Valley 92 71 109 61 54 27* 0 0 0 0

East San Gabriel Valley 1 76 81 83 55 58 55 0 0 0+ 0

Santa Clarita Valley 55 53 131 60 58 57 0 0 0** 0

Orange County

Central Orange County 65 104 75 61 56 58 0 0 0** 0

Saddleback Valley 1 41 57 74 55 50 57 0 0 0 0

Riverside County

Norco/Corona 79 74 93 58 57 58 0 0 0 0

Metropolitan Riverside County 1 123 109 118 123 118 116 0 0 0** 0

Mira Loma -- 124 142 -- 59 55 -- 0 0 N/A

Perris Valley 80 125 120 60 54 57 0 0 0**# 0

Banning Airport 76 75 78 58 55 48* 0 0 0 0

San Bernardino County

Southwest San Bernardino Valley 74 78 115 60 62 58 0 0 0** 0

Central San Bernardino Valley 1 108 142 111 60 60 56 0 0 0**+ 0

Central San Bernardino Valley 2 72 92 136 60 57 57 0 0 0** 0

East San Bernardino Valley 61 103 97 58 60 60 0 0 0 0

Central San Bernardino Mountains 49 63 89 56 58 46* 0 0 0 0

* Less than 12 months of data

Flagged Exceptional Events

** October 21, 2007 Southern California Wildfires

# April 12, 2007 “Santa Ana” high winds event where localized wind gusts 40 mph and sustained hourly winds exceeded 30 mph

+ July 5, 2007 following Fourth of July fireworks demonstrations. 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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0.0

2.0

4.0

6.0

8.0

10.0

12.0

Q1 Q2 Q3 Q4

Inches of Rainfall

Basin 2005-2007

Basin 1985-2004

FIGURE 2-1

Quarterly Average Basin Rainfall Measured at Downtown Los Angeles 

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

Q1 Q2 Q3 Q4

Miles Per Hour

Basin 2005-2007

Basin 1996-2004

FIGURE 2-2

Quarterly Average Wind Speed Measured at Ontario Airport
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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Annual Standardized Daily PM10 Potential

-4

-3

-2

-1

0

1

2 1981

1983198519871989199119931995199719992001200320052007

PM10 Index

FIGURE 2-3

Standardized Annual Average Basin Daily PM10 Potential 

For this supporting analysis, two cursory data screening tests were applied to each

TEOM and BAM hourly data set: First, all hours having zero concentration were 

set to missing and excluded from the 24-hour average calculation. Second, the 3-

year standard deviation of the hourly data was calculated (all hours), then 

multiplied by a factor of six to provide an extreme benchmark to evaluate and

compare spikes in consecutive hourly data values. If the change between hours 

exceeded 6 standard deviations then the latest hour was excluded from the analysis. 

This analysis mainly targets random fluctuations in the 24-hour PM10 profile 

rather than high wind events characterized by multiple successive hours of elevated 

concentrations. The greatest standard deviation of any station for the 2005-2007 

hourly PM10 data was calculated to be 35 μg/m3 at Mira Loma, and the 6-standard 

deviation benchmark was set at 210 μg/m3. A valid daily 24-hour average 

concentration required 18 hours of data (75 percent rule) to be included in the 

assessment.

Figures 2-4 and 2-5 depict the trend of 24-hour average concentration for PM10 at 

Glendora and Mira Loma, respectively for the period including January 1, 2005 

through December 31, 2007. Overall, Basin maximum PM10 concentrations 

(highest reading observed at the daily ten real-time stations) using the continuous 

monitors exceeded the federal standard on only seven days during the three year 

period. The TEOM data monitored at Glendora and Mira Loma captured five of 

the seven days when PM10 concentrations exceeded the standard during the three 

year period. The Glendora TEOM registered PM10 24-hour averages exceeding 

the federal standard in 2005 and 2006 on July 5th (Julian day number 186) 

following fireworks displays that occurred after sunset on the July 4th national 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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holiday. PM10 concentrations on July 5, 2007 reached 135 μg/m3. 

Concentrations exceeded 150 μg/m3at Mira Loma on two days: (1) December 2, 

2006 during a local brush fire documented by the county fire department and (2) 

during a Santa Ana high wind dust storm and concurrent wildfire event that 

occurred on October 21-22, 2007. In each case, the data from the days exceeding

the standard would qualify as candidates for exceptional event exclusion. The 

additional two days having TEOM measurements that exceeded the federal 

standard included July 5, 2007 (fireworks at Upland and Rubidoux) and December 

25, 2007 when a brief, but strong Santa Ana generated elevated levels of wind 

blown fugitive dust at Rubidoux. The three year trends of daily 24-hour averaged 

PM10 measured at the continuous monitoring sites are proved in Appendix-2.

Table 2-3 summarizes the exercise if U.S. EPA’s criteria for calculating the 

expected number of days that would exceed the 24-hour standard had been applied 

to the Glendora and Mira Loma data. As indicated, without screening for 

exceptional events, both sites would be projected to have less than one day per year 

with 24-hour average concentrations exceeding 150 μg/m3. If the days identified 

as exceptional events were excluded, the tally would be zero days in the three year 

period for each station.

 

Figure 2-5 provides the 2005-2007 data correlation between the TEOM PM10 24-

hour average concentrations and the corresponding filter based FRM measurements 

for Rubidoux (excluding the exceptional event). The correlation coefficient 

between the two measurement techniques is 0.84 (R2= 0.704) with the TEOM

exhibiting a tendency for under estimating the upper end of the PM10 distribution. 

Given the instruments are based on fundamentally different technologies and do 

not share a common intake manifold, the correlation is strong for ambient air 

quality monitoring. (Preliminary 24-hour average TEOM and BAM concentrations 

for 2007 are provided for each Basin continuous monitoring site in Attachment-3 

of this document).

The results of this analysis support the FRM data analysis that the Basin has met 

the 24-hour average federal standard for the period 2005-2007. Furthermore, the 

analysis provides confidence that the real-time TEOM and BAM monitors will be 

reliable and can meet the requirement for daily PM10 monitoring prescribed by the 

Clean Air Act. 

 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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Glendora

0

50

100

150

200

250

1 92 183 274 365 91 182 273 364 90 181 272 363

Julian Day

ug/m3

FIGURE 2-4

District 24-Hour Average Glendora TEOM Continuous PM10 (2005-2007)

Mira Loma

0

50

100

150

200

250

91 182 273 364 90 181 272 363 89 180 271 362

Julian Day

ug/m3

FIGURE 2-5

District 24-Hour Average Mira Loma TEOM Continuous PM10 (2005-2007)
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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TABLE 2-3

Summary of Glendora and Mira Loma TEOM PM10 Continuous Monitoring Data

Year Quarter

Days

Complete 

Data Normal

No. Days 

> 150 

μg/m3

Expected

Exceedances

No. 

Exceptional

Expected 

Exceedances 

Excluding 

Exceptional 

Events

Glendora TEOM

2005 1 90 90 0 0 0 0

2 91 91 0 0 0 0

3 73 92 1 1.26 1 0

4 91 92 0 0 0 0

2006 1 86 90 0 0 0 0

2 87 91 0 0 0 0

3 92 92 1 1.00 1 0

4 92 92 0 0 0 0

2007 1 90 90 0 0 0 0

2 91 91 0 0 0 0

3 92 92 0 0 0 0

4 92 92 0 0 0 0

Total 2.26 0

3-Year 

Average 0.75 0

2005 1 90 90 0 0 0 0

Mira Loma TEOM

Year Quarter

Days

Complete 

Data Normal

No. Days 

> 150 

μg/m3

Expected

Exceedances

No. 

Exceptional

Expected 

Exceedances 

Excluding 

Exceptional 

Events

2005 1 89 90 0 0 0 0

2 89 91 0 0 0 0

3 92 92 0 0 0 0

4 89 92 0 0 0 0

2006 1 84 90 0 0 0 0

2 83 91 0 0 0 0

3 92 92 0 0 0 0

4 89 92 1 1.03 1 0

2007 1 90 90 0 0 0 0

2 91 91 0 0 0 0

3 92 92 0 0 0 0

4 78 92 1 1.18 1 0

Total 2.21 0

3-Year 

Average 0.74 0
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

15

y = 0.6339x + 7.3024

R

2

 = 0.7044

0

20

40

60

80

100

120

140

160

0 20 40 60 80 100 120 140 160

SSI (ug/m3) 

TEOM (ug/m3)

FIGURE 2-6

Comparison of the 2005-2007 24-Hour Average Rubidoux TEOM Continuous PM10 

Concentrations with the FRM Selective Sized Inlet (SSI) Filter PM10 Measurements
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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2.2 Basin PM10 State Implementation Plan 

On November 14, 2005, U.S. EPA approved the 2003 State Implementation Plan (SIP) 

submitted by the State of California to provide for the attainment of the PM10 NAAQS 

for the Basin (Federal Register,: November 14, 2005 [Volume 70, Number 218], pp. 

69081-69085). Based on this approval, finding number 2 of the CAA Section 107 

requirements for an approved implementation plan under CAA Section 110(k) is 

therefore satisfied.

The initial 1991 Basin PM10 plan provided a blueprint for dust control containing 

measures to address fugitive emissions from paved and unpaved roads, agricultural and 

construction/demolition activities and open area wind erosion. The plan was 

subsequently revised in 1994, 1997, and 2003 to provide control program enhancements 

and CAA requirements for an extension of the PM10 attainment date to 2006. (Note: 

while Basin 24-hour average concentrations of PM10 were meeting the federal standard, 

annual average concentrations were in excess of the respective standard. U.S. EPA

revoked the annual PM10 standard in 2006). The 2003 AQMP included enhancements 

to the District dust program including revisions to existing Rules 403 Fugitive Dust 

(2004), and 1186 PM10 Emissions from Paved and Unpaved Roads, and Livestock 

Operations (2004). 

Several additional control measures in the 2003 AQMP that addressed directly emitted 

and precursor emissions that contribute to primary and secondary PM10 formation, have 

since been adopted as District rules. These include rules: 1105.1 -- Reduction of PM10

and Ammonia Emissions from Fluid Catalytic Cracking Units (2003); 1118 -- Control of 

Emissions from Refinery Flares (2005); 1127 -- Emissions Reductions From Livestock 

Waste (2004); 1133.2 – Emissions Reductions From Co-Composting Operations (2003); 

1156 -- PM10 Emission Reductions from Cement Manufacturing Facilities (2005); and 

1157 -- PM10 Emission Reductions from Aggregate and Related Operations (2005). 

The 2007 revisions to the Air Quality Management Plan provided an update to the Basin 

emissions inventory, the 8-hour ozone, annual PM2.5 and 24-hour average PM10

attainment demonstrations and transportation conformity budgets. The 2007 AQMP 24-

hour average PM10 attainment demonstration indicated that the Basin would remain in 

attainment of the standard through 2020 and beyond. Further reductions in PM10 

(approximately 14 percent) would occur by 2015 as a result of control measures being 

implemented to reduce regional PM2.5 concentrations to attain the federal annual 

average standard.
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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2.3 Permanent and Enforceable Emission Reductions

The Basin has attained the 24-hour PM10 standard since 2000 despite regional growth 

and increases in construction activities. The 2003 AQMP revison committed to a 2.2

ton per day (TPD) PM10 emissions reduction through rule adoption of new control 

measures by 2006 with implementation scheduled out through 2010. Implementation of 

the PM10 control measures were committed to achieve 1.0 TPD reduction through 2006. 

Similarly, the 2003 AQMP committed to emissions reduction through rule adoption of 

new control measures by 2006 of 2.1 TPD of SOx (implemention through 2005), 4.0

TPD of VOC (implemention through 2006) and 5.1 TPD of NOx (implemention in 

2007). Through June 2006, rule adoption and implementation of the the 2003 AQMP 

control measures (listed in Section 2.2) had resulted in 2.4 TPD of PM10, 3.8 TPD SOx, 

and 8.2 TPD of VOC of permanent and enforceable emission reductions. 

2.4 Section 110 and Part D Requirements

CAA section 107(d)(3)(E) requires that U.S. EPA determine that the improvement in air 

quality is due to permanent and enforceable reductions in emissions resulting from

implementation of the SIP and/or applicable federal measures. CAA section 110 

contains the general requirements for SIPs and Part D specifies additional requirements 

applicable to nonattainment areas. Both Section 110 and Part D describe the elements of 

a SIP and include, among other things, emission inventories, a monitoring network, an 

air quality analysis, modeling, attainment demonstrations, enforcement mechanisms, and 

regulations which have been adopted by the State to attain or maintain the NAAQS. 

In its rulemaking on the PM10 portion of the 2003 AQMP, U.S. EPA fully approved the 

applicable requirements for the Basin (Federal Register: November 14, 2005 [Volume 

70, Number 218], pp. 69081-69085). Thus, the State has met all SIP requirements 

applicable to the area under section 110 and part D, as required by CAA section 

107(d)(3)(E). 

2.5 Maintenance Plan

The District is submitting its Basin PM10 Maintenance Plan (Section 3.0 of this 

document) concurrently with this redesignation request. The District requests U.S. EPA 

to expeditiously review the Plan, and if determined to meet the provisions of the CAA, 

approve the maintenance plan as part of the redesignation process.
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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3.0 BASIN PM10 MAINTENANCE PLAN

Section 107(d)(3)(E) of the CAA specifies that for an area to be redesignated as 

attainment, the U.S. EPA must approve a maintenance plan that meets the requirements 

of Section 175A. The purpose of the maintenance plan is to provide for the maintenance 

of the 24-hour PM10 NAAQS for at least ten years after the redesignation (not ten years 

after the redesignation submittal). CAA Section 107 (d)(3)(D) allows the U.S. EPA 

Administrator up to 18 months from receipt of a complete submittal to process a 

redesignation request. To accommodate the U.S. EPA's review time and to be consistent 

with other District planning timelines, the maintenance plan will cover the period 

beginning U.S. EPA’s approval (2010 to 2012) through the following ten years. The 

maintenance plan requires a maintenance demonstration, a commitment to a future 

monitoring network, verification of continued attainment, a contingency plan, and 

provisions for contingency plan implementation. 

This section provides the proposed Basin PM10 Maintenance Plan. In Section 3.1, the 

2003 PM10 AQMP attainment inventory and modeling demonstration as well as the 

transportation conformity budgets are updated to include the latest planning assumptions 

and emissions inventory used in the 2007 AQMP. The maintenance plan also provides a 

commitment to maintain a future PM10 monitoring network in the Basin to verify 

continued attainment of the NAAQS (Sections 3.2 and 3.3). Finally, Section 3.4 

provides a contingency plan that commits the District to evaluate amending rules to 

further strengthen prohibitions on particulate emissions. The section also discusses the 

impact of implementation of adopted 2007 AQMP District and CARB measures that are 

projected to reduce directly emitted particulates and aerosol precursors. The Basin 

PM10 Maintenance Plan defined in Section 3.0 of this document meets the criteria 

specified in CAA Sections 107 and 175A and upon approval by U.S. EPA will complete 

the five findings needed for granting the Basin request for redesignation to attainment of 

the PM10 NAAQS.

3.1 Maintenance Demonstration

According to U.S. EPA guidance, a maintenance plan may demonstrate future 

maintenance of the NAAQS by either showing that future emissions will not exceed the 

level of the attainment inventory or by modeling to show that the future mix of sources 

and emissions rates will not cause a violation of the NAAQS. The District will use the 

second approach to demonstrate that modeling will assure future maintenance of the 

PM10 standards. 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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3.1.1 Attainment Inventory and Modeling Demonstration

The primary focus of the 2003 Basin attainment demonstration was the now revoked 

annual PM10 standard previously required to be attained by 2006. By 2003, the Basin

had not violated the federal 24-hour PM10 standard (excluding exceptional events) for 

more than a decade. The update of the 24-hour PM10 standard attainment demonstration 

for 2006 presented in the 2003 AQMP used speciated linear rollback modeling to 

determine the future year PM10 concentrations at five representative Basin sites. The 

five sites evaluated included Anaheim, Diamond Bar, Fontana, Los Angeles and 

Rubidoux. Comprehensive monitoring through the PM10 Technical Enhancement 

Program (PTEP) provided data on the component species at each site for the year 1995. 

Rollback by species was conducted using the 1995 maximum 24-hour average PM10 

concentration at each site to estimate 2006 and 2010 future year PM10 concentrations 

with and without implementation of the 2003 AQMP control program. Model output 

was extrapolated throughout the Basin modeling domain. The modeling demonstration 

also included a comprehensive grid level “hot spot’ impact analysis. The 2003 AQMP

attainment demonstration relied on a 1997 baseline PM10 inventory back cast to 1995 

and projected for 2006 and 2010 baseline and controlled emissions. The attainment 

demonstration showed that with implementation of the 2003 AQMP, the federal 24-hour 

standard would be met by 2006 and maintained through 2010 (the attainment date for the 

1-hour ozone NAAQS). As outlined in Section 2.3, the control measures proposed in the 

2003 AQMP for 2006 have been fully adopted and are in effect and enforceable.

The proposed maintenance plan incorporates the 2007 AQMP’s most current update of 

the Basin baseline attainment emissions inventory as well as an updated modeling 

attainment demonstration. As with the 2003 AQMP, the 2007 AQMP inventory 

provides the District’s latest point and areas source emissions, as well as CARB’s 

EMFAC2007 updated mobile source emissions model output, and SCAG’s Interim 2007 

RTP assumptions. The 2007 AQMP relies on a 2002 baseline PM10 inventory. Futureyear baseline projections are provided for several milestone years including the 2002 

base-year, 2006 (the 2003 AQMP attainment-year), 2008, 2010 through 2012 (the start 

of the maintenance period dependent upon plan approval by U.S. EPA), 2014 (the Basin 

attainment date for annual average PM2.5), 2020 and 2023 (bracketing the expected 

horizon-year), and 2030.

The 2007 AQMP PM10 attainment demonstration included efforts to control Basin 

PM2.5 to project future year improvements to maximum 24-hour average 

concentrations. As a conservative analysis, only emissions reductions associated with 

the PM2.5 portion of the 24-hour PM10 concentration were assumed to be impacted by 

future year emission controls. The 2007 AQMP analysis used the average of the 2003-

2005 reported annual maximum 24-hour PM10 concentrations at each station where colocated PM10 and PM2.5 where sampled. The site specific PM2.5 fraction of the PM10 

mass was determined by ratio. Site specific PM2.5 relative reductions factors (RRF), 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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were generated from the regional modeling analyses and then used to project the 2015 

and 2020 PM2.5 reductions to the total mass due to the implementation of regional 

emissions controls. The projected 2015 and 2020 maximum 24-hour average maximum 

PM10 concentrations were estimated by adding the projected 24-hour average maximum 

PM2.5 concentrations to the average 2003-2005 PM10-2.5 “coarse” portion of the mass 

(that was held constant). The modeling methodology is discussed further in Chapter 3 of 

Appendix V of the 2007 AQMP. 

Updated Attainment Inventory

Table 3-1 presents the updated Basin 2007 AQMP annual average day baseline 

emissions inventories for PM10, PM2.5, NOx, VOC and SOX. The inventory includes

the 2002 base-year, 2006 (the 2003 AQMP attainment-year), 2008, 2010 through 2012

(the start of the maintenance period dependent upon plan approval by U.S. EPA), 2014 

(the Basin attainment date for annual average PM2.5), 2020 and 2023 (bracketing the 

expected horizon-year), and 2030. Table 3-2 provides a detailed breakout of the 

updated baseline attainment inventory for the PM10 emission subcategories.

Future PM10 emissions are projected to nominally increase from the 2002 base-year 

inventory due to growth in the construction/demolition source categories offsetting 

emissions reductions from mobile sources. Overall, the PM10 baseline emissions 

inventory will increase approximately seven (7) percent from 2010 to 2020 and ten (10) 

percent from 2020 to 2030. 

Modeling Demonstration

Table 3-3 presents the results of the updated 2007 AQMP 24-hour PM10 attainment 

demonstration. Whereas the 2007 AQMP used the average of the 2003-2005 daily 

maximum PM10 concentrations (by station) as the basis of the attainment demonstration,

this update conservatively selects the highest 24-hour average PM10 concentration by 

county for the 2005-2007 monitoring period as the basis for projecting future year 

PM10. The model simulations for baseline PM10 emissions indicate that despite 

growth, the Basin will continue to attain the federal 24-hour PM10 standard. A 

comprehensive discussion of the current updated attainment modeling demonstration is 

provided in Attachment-4 of this document.
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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TABLE 3-1

2007 AQMP Updated Basin Annual Average Day Attainment Baseline Emission Inventories (TPD)

CATEGORY 2002 2006 2008 2010 2011 2012 2014 2020 2023 2030

PM10 274.7 282.8 277.5 280.9 283.0 284.8 288.7 300.3 307.8 329.6

PM2.5 99.1 104.2 101.5 101.4 101.5 101.6 101.6 103.2 105.2 113.6

NOX 1093.2 970.7 853.7 774.7 742.9 711.6 653.6 525.2 506.4 511.8

VOC 844.2 695.9 608.0 572.4 559.4 547.9 527.7 498.5 496.0 508.4

SOX 53.3 54.8 40.9 39.2 40.1 40.7 42.8 51.4 55.1 71.7
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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TABLE 3-2

2007 AQMP Updated Basin PM10 Attainment Annual Average Day Baseline Emission Inventory (TPD)

CATEGORY 2002 2006 2008 2010 2011 2012 2014 2020 2023 2030

Stationary-Point Sources 21.1 20.1 17.1 17.3 17.4 17.6 17.9 18.9 19.5 20.9

Construction/Demolition 39.9 46.9 49.8 52.9 54.3 55.8 58.7 66.0 69.7 78.9

Entrained Road 

Dust/Paved 125.4 123.5 122.3 123.4 124.0 124.5 125.8 129.3 131.1 135.2

Entrained Road 

Dust/Unpaved 13.6 11.5 10.3 10.3 10.3 10.3 10.3 10.2 10.2 10.2

Farming Operations 0.8 0.7 0.6 0.6 0.6 0.6 0.5 0.4 0.4 0.3

Fugitive Windblown 

Dust 2.8 2.4 2.3 2.2 2.2 2.1 2.0 1.8 1.7 1.6

Other Area Sources 23.3 28.8 29.4 30.0 30.3 30.6 31.2 32.6 33.3 35.0

On-Road Mobile 

Sources 24.8 26.5 24.9 24.3 24.3 24.2 24.0 23.6 23.6 24.7

Off-Road Mobile 

Sources 23.1 22.5 20.7 19.9 19.6 19.2 18.4 17.4 18.1 22.7

Total PM10 274.7 282.8 277.5 280.9 283.0 284.8 288.7 300.3 307.7 329.6
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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TABLE 3-3

PM10 Observed and Predicted Concentrations (using baseline emissions)

Year/

Emissions 

Scenario

Observed County

24-hr Maximum

Concentration

(μg/m3)

Predicted County

24-hr Maximum

Concentration

(μg/m3)

Los 

Angeles Orange Riverside San Bernardino

Los 

Angeles Orange Riverside San Bernardino

2005 131 65 123 108

2006 117 104 125 142

2007 131 75 142 136

3-Year 

Maximum 131 104 142 142

2010 102 79 120 126

2011 101 79 119 125

2012 101 78 118 125

2014 102 79 117 126

2020 102 80 117 126

2023 103 81 118 128

2030 109 86 125 136

3.1.2 Transportation Conformity Requirements

The federal transportation conformity regulation requires SIPs to specify the level of onroad motor vehicle emissions that are consistent with attainment and maintenance of air 

quality standards. To receive federal approval and funding, transportation agencies must 

demonstrate that emissions from new transportation plans, programs and projects 

conform to these “emission budgets.” 

Budget Approach

As part of its approval of the 2003 revisions to the AQMP (Federal Register: November 

14, 2005 [Volume 70, Number 218]), U.S. EPA approved the Basin PM10 motor vehicle 

emissions budgets. The approved PM10 motor vehicle emissions budgets (Table 3-4) 

incorporated emissions of PM10, NOx and VOC. As described earlier in this chapter, 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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the mobile source portion of the 2003 AQMP emissions inventory was based on 

EMFAC2002. Road construction emissions were based on SCAG’s 2001 Regional 

Transportation Plan (RTP). The proposed maintenance plan seeks to update the Basin 

motor vehicle emissions budgets using the 2007 AQMP’s most current update of the Basin 

attainment emissions inventory based on EMFAC2007 and SCAG’s Interim 2007 RTP 

assumptions.

TABLE 3-4

2003 AQMP PM10 Basin Transportation Conformity Emissions Budget for 2003, 2006 

and Post Attainment Years (Annual Average Emissions in TPD)

Year PM10 NOx VOC

2003 168 635 311

2006, and Post 

Attainment Years 166 549 251

U.S. EPA's transportation conformity rule, found in 40 CFR parts 51 and 93, details the 

requirements for establishing motor vehicle emissions budgets in SIPs for the purpose of 

ensuring the conformity of transportation plans and programs with the SIP attainment 

demonstration. The on-road motor vehicle emissions budgets act as a "ceiling" for 

future on-road mobile source emissions. Exceedances of the budget indicate an 

inconsistency with the SIP, and could jeopardize the flow of federal funds for 

transportation improvements in the region. As required by the CAA, a comparison of 

regional on-road mobile source emissions to these budgets will occur during the periodic 

updates of regional transportation plans and programs. The proposed maintenance plan 

substitutes EMFAC2007 on-road motor vehicle emissions estimates for the previous 

emissions factor model and SCAG’s Interim 2007 RTP assumptions (to reflect the most 

current motor vehicle activity data). It is important to note that as presented in Table 3-

2, entrained paved road dust emissions are projected to increase from 2010 through 

2030.

The 2003 AQMP was required to address both the 24-hour and now revoked annual 

average NAAQS. As such, the attainment demonstration was required to satisfy both 

standards by 2006. In the Basin, the federal annual average standard of 50 μg/m3 was 

the more difficult of the two PM10 standards to meet and therefore controlled the 

attainment demonstration. The PM10 attainment demonstration based on the 2003 

AQMP emissions resulted in maximum simulated levels of 47.6 μg/m3and 150 μg/m3

for the annual and 24-hour average standards, respectively. Based on this analysis, (as

listed in Table 3-4), the 2006 PM10 transportation conformity budget was approved at 

166 TPD PM10 emissions.
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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The revised attainment demonstration based on the 2007 AQMP baseline inventory, 

presented in Section 3.1.1 and Appendix A-4 of this document, projected that Basin 

maximum 24-hour average PM10 concentrations for 2010 (126 μg/m3) would be 

approximately 16 percent below the federal standard. The peak concentration predicted 

for 2023 and 2030 again occurs in San Bernardino at concentrations of 128 and 136 

μg/m3respectively. The respective predicted PM10 concentrations would be 85 and 91 

percent of the standard. 

Attainment Modeling Sensitivity Analysis

A PM10 modeling sensitivity analysis was conducted for the years from 2010 through 

2030 to test the assumption that controlled directly emitted annual day PM10 emissions 

from motor vehicles could be conservatively raised by up to 20 TPD without causing a

violation of the 24-hour average PM10 standard in the Basin. The analysis is discussed 

in Appendix A-4 of this document and the results of the modeling are summarized in 

Table 3-5. 

With the additional 20 TPD PM10 emissions added to the baseline inventory, all 

counties continue meet the federal PM10 standard of 150 μg/m3in all years. Nominal 

PM10 concentration increases of 3-5 μg/m3are projected with the additional emissions 

however the spatial pattern remains unchanged with the maximum predicted impact 

occurring in San Bernardino County. The 2010 through 2012 predicted highest 

maximum concentrations in the Basin occur in San Bernardino County (131 μg/m3). 

The concentration is projected to be 87 percent of the federal standard. The peak 

concentration predicted for 2023 and 2030 again occurs in San Bernardino at 133 μg/m3

in 2023 and 141 μg/m3in 2030. The predicted PM10 concentration would be 89 percent 

of the standard in 2023 and 94 percent of the standard in 2030. The results of the 

sensitivity analyses demonstrates that 20 TPD additional PM10 emissions inventory in 

can be added as a “modeling margin” to the baseline inventory without causing 

concentrations to exceed 150 μg/m3 during the period 2010 through 2030. 

Transportation Conformity Emissions Budget

At the request of CARB, the proposed transportation conformity emissions budget has 

been withdrawn from this plan. CARB will provide the transportation conformity 

emissions budget as a component of their notice of public hearings, 30 days prior to 

CARB Public Hearing (tentatively scheduled for the first quarter 2010). The revised 

transportations emissions will reflect the EMFAC2007 annual average day baseline 

mobile source emissions with the addition of the 20 TPD PM10 modeling margin. 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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TABLE 3-5

Summary of Predicted 24-Hour Average PM10 Concentrations Assuming an 20 TPD 

Increase in Baseline Basin PM10 Emissions 

Year/

Emissions 

Scenario

Predicted County

24-hr Maximum

Concentration

(μg/m3)

Los Angeles Orange Riverside San Bernardino

2010 105 81 124 131

2011 105 82 123 131

2012 105 81 122 130

2014 105 82 121 131

2020 106 83 121 132

2023 107 84 123 133

2030 113 89 129 141

3.2 Future Monitoring Network

U.S. EPA guidance states that once an area has been redesignated, the State should 

continue to operate an appropriate air quality monitoring network in accordance with 40 

CFR Part 58, to verify the attainment status of the area. More specifically, daily PM10 

sampling is required in the area reporting the peak PM10 concentration. The District has 

been submitting its continuously monitored hourly TEOM and BAM data to US EPA’s 

AirNow data base since 2004. The preliminary 2007 non-certified TEOM and BAM 24-

hour average concentrations from at each of the District stations measuring continuous 

PM10 are provided in Appendix 3. 

As discussed in Section 2.2.1, the District presently operates FRM samplers at nineteen

air quality monitoring stations in accordance with 40 CFR, part 58. The network

monitors operate on a one-in-six day cycle with the exception of the Rubidoux FRM 

monitor which operates on an enhanced one-in-three day sampling schedule. In 

accordance with the requirements outlined in U.S. EPA guidance, the District will 

conduct a more rigorous quality assurance review of the 2007 TEOM and BAM data and 

submit that data with more current updates (e.g. 2008) to AQS, thus designating the 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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monitors as FEM. Furthermore, the District will begin phase-in upgraded TEOM PM10 

monitors at each site as FEM samplers to fulfill the daily monitoring requirements 

specified in U.S. EPA guidance.

The District will assure the on-going quality of the measured data by performing the 

operational procedures for data collection including routine calibrations, pre-run and 

post-run test procedures, and routine service checks. An annual review of the District's 

entire air quality monitoring network is required by federal regulations as a means to 

determine if the network is effectively meeting the objectives of the monitoring program. 

If relocation or a closure is recommended in the annual network review, reports are 

submitted to the U.S. EPA and the ARB to document compliance with siting criteria. 

The data collection procedures already in place, in conjunction with the annual review 

program, will ensure that future PM10 ambient concentrations are monitored throughout 

the Basin. 

The District is committed to continue operating the FRM and the continuous TEOM and 

BAM PM10 network in the Basin to verify the attainment status of the area. 

3.3 Verification of Continued Attainment

U.S. EPA guidance requires the District to periodically review the assumptions and data 

for the attainment inventory and demonstration. This guidance further suggests that the 

reevaluation take place every three years and include a complete review of the modeling 

assumptions and input data. The purpose of the reevaluation is to determine the 

effectiveness of the control strategy. The District will conduct a reevaluation of the 

Basin PM10 Maintenance Plan as part of the AQMP process. In accordance with U.S. 

U.S. EPA guidance, a revision to the PM10 Maintenance Plan for the subsequent ten 

year maintenance planning period will submitted to U.S. EPA prior to the horizon date 

(to be determined upon U.S. EPA approval of the maintenance plan). 

In addition to the verification actions listed above, the District will analyze the PM10 air 

quality data collected on a daily basis using the TEOMs and BAM and on a one-in-three 

(Rubidoux) or one-in-six (other Basin stations) sampling schedule using the FRM 

analyzers. Specifically, daily PM10 24-hour average concentrations will be compared 

directly with the 24-hour PM10 NAAQS. 

3.4 Contingency Plan

CAA Section 175A(d) requires maintenance plans to identify contingency provisions to 

offset any unexpected increases in emissions and ensure maintenance of the standard. 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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3.4.1 Emissions Reductions

Contingency provisions are traditionally held in reserve and implemented only if an area 

violates the standard. Implementation of District Rules 403 and 1186, in particular, have 

been effective measures to abate fugitive dust emissions from anthropogenic source 

activities such as construction and farming. Concentrations of 24-hour average PM10 

exceed the NAAQS in the Basin only under selected exceptional conditions such as the 

October 21, 2007 wildfires, the April 12, 2007 “Santa Ana” high winds event where 

localized wind gusts 40 mph and sustained hourly winds exceeded 30 mph, and finally, 

July 5, 2007 following Fourth of July fireworks demonstrations. During the period 

2005-2007, excluding documented exceptional events, PM10 24-hour average 

concentrations have exceeded 125 μg/m3on only six days. When all daily FRM PM10 

data are evaluated (including severe dust, fire and fireworks events) from January 1990 

through June of 2008, the 99.5th percentile Basin PM10 concentration was 140 μg/m3, 93 

percent of the NAAQS. Furthermore, the 97.5th percentile PM10 concentration was 101 

μg/m3, only 67 percent of the NAAQS. Barring an exceptional event, which will be 

flagged, the PM10 24-hour average NAAQS is not likely to be violated in the Basin.

Emissions reductions from the implementation of the 2007 AQMP revision including 

measures from CARB to attain the annual PM2.5 standard are estimated to reduce the 

Basin maximum PM10 24-hour average concentrations by 14 percent in 2015 and an 

additional 6 percent by 2020. Implementation of the AQMP serves as an “ongoing 

contingency measure” since emissions reductions designed to attain the PM2.5 and 

ozone standards will effectively reduce ambient PM10. 

Existing District BARCT rules will continue to control local PM10 emissions despite 

growth in the Basin. While 24-hour averaged PM10 concentrations are not expected to 

exceed the standard, the District will commit to 

(1) annual reviews of the effectiveness of Rules 403, 1157, 1158 and 1186; 

(2) establish a trigger to implement a contingency action; whereby;

(3) if the 24-hour average PM10 standard is violated in the Basin, excluding 

exceptional events; then,

(4) the District will evaluate amending BARCT Rules 403, 444, 1157, 1158 and 

1186 to further strengthen prohibitions on particulate emissions. 

3.4.2 Implementing Agency

The CARB has the authority to set vehicle emissions standards and fuel formulation 

requirements for California.
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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The District has the authority and is the agency responsible for developing and enforcing 

air pollution control BARCT rules in the Basin for stationary and areawide sources. 

3.5 Contingency Plan Implementation

The District is committed to a formal review of the Basin PM10 Maintenance Plan as a 

component of its next AQMP revision. Subsequent plan revisions to address the latest 

updates to the federal ozone standard and meet the California tri-annual reporting will 

serve as opportunities to conduct reviews of the Basin PM10 Maintenance Plan. Also, 

the District will review ambient PM10 daily monitoring data to assess continued 

maintenance of the 24-hour standard. If either of these mechanisms indicates that 

additional emissions reductions are needed or the adopted rules are not achieving the 

committed reductions, the District will ensure that enhancements to existing BARCT 

rules or additional measures are developed and adopted to achieve the necessary 

reductions as expeditiously as possible.

The District also commits to submit a second maintenance plan 8 years after redesignation

to show maintenance for at least the next 10 year period.

3.6 Authority

The CARB has the authority to set vehicle emissions standards and fuel formulation for 

California.

The District has the authority and is the agency responsible for developing and enforcing 

air pollution control BARCT rules in the Basin for stationary and areawide sources. 

4.0 SUMMARY CHECKLIST

Table 4-1 summarizes the status of the elements that need to be satisfied in order to meet 

CAA requirements as well as conform to the guidance documents prepared by the U.S. 

EPA (e.g., request for redesignation and maintenance plan). 
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

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TABLE 4-1

Summary Checklist of Document References

Plan Components CAA/U.S. EPA 

Requirements

Status Document 

Reference

Redesignation 

Request

Attainment with NAAQS Conditions met Section 2.1.2

U.S. EPA approval of 

State Implementation 

Plan*

Conditions met Section 2.2 

Air quality improvements 

due to permanent and 

enforceable emissions 

reductions

Conditions met Section 2.3

Section 110 and Part D 

requirements have been 

meet

Conditions met Section 2.4 

U.S. EPA approval of a 

maintenance plan and 

contingency plan

Pending (as part of this 

submittal)

Section 3

Maintenance Plan Attainment inventory Conditions met Section 3.1.1

Maintenance 

demonstration

Conditions met Sections 3.1.1, 

and 3.1.2

Monitoring network Commitment established Sections 2.3 

and 3.2

Verification of continued 

attainment

Commitment established Section 3.3

Contingency Plan Commitment established Sections 3.4, 

3.5 and 3.6
Final South Coast Air Basin PM10 Redesignation Request and Maintenance Plan

-31-

References

SCAQMD, 2003, “Final 2003 Air Quality Management Plan”.

SCAQMD, 2007, “Final 2007 Air Quality Management Plan.”
ATTACHMENT - 1

Air Quality Data Certification Letters to U.S. EPA





Federal 24-Hour PM10 Attainment Plan and Visibility Assessment

V - 3- 0

ATTACHMENT - 2

Time Series of Preliminary Continuous Monitored 

PM10 24-Hour Average Concentrations (2005-2007)
Los Angeles

0

50

100

150

200

250

91 182 273 364 90 181 272 363 89 180 271 362

Julian Day

ug/m3

Figure A-3-1

District 24-Hour Average Los Angeles BAM Continuous PM10 (2005-2007)

Anaheim

0

50

100

150

200

250

91 182 273 364 90 181 272 363 89 180 271 362

Julian Day

ug/m3

Figure A-3-2

District 24-Hour Average Anaheim TEOM Continuous PM10 (2005-2007)
Burbank

0

50

100

150

200

250

91 182 273 364 90 181 272 363 89 180 271 362

Julian Day

ug/m3

Figure A-3-3

District 24-Hour Average Burbank TEOM Continuous PM10 (2005-2007)

Elsinore

0

50

100

150

200

250

1 92 183 274 365 91 182 273 364 90 181 272 363

Julian Day

ug/m3

Figure A-3-4

District 24-Hour Average Elsinore TEOM Continuous PM10 (2005-2007)
Glendora

0

50

100

150

200

250

1 92 183 274 365 91 182 273 364 90 181 272 363

Julian Day

ug/m3

Figure A-3-5

District 24-Hour Average Glendora TEOM Continuous PM10 (2005-2007)

North Long Beach

0

50

100

150

200

250

91 182 273 364 90 181 272 363 89 180 271 362

Julian Day

ug/m3

Figure A-3-6

District 24-Hour Average North Long Beach TEOM Continuous PM10 (2005-2007)
Mira Loma

0

50

100

150

200

250

91 182 273 364 90 181 272 363 89 180 271 362

Julian Day

ug/m3

Figure A-3-7

District 24-Hour Average Mira Loma TEOM Continuous PM10 (2005-2007)

Rubidoux

0

50

100

150

200

250

91 182 273 364 90 181 272 363 89 180 271 362

Julian Day

ug/m3

Figure A-3-8

District 24-Hour Average Rubidoux TEOM Continuous PM10 (2005-2007)
San Bernardino

0

50

100

150

200

250

91 182 273 364 90 181 272 363 89 180 271 362

Julian Day

ug/m3

Figure A-3-9

District 24-Hour Average San Bernardino TEOM Continuous PM10 (2005-2007)

Upland

0

50

100

150

200

250

91 182 273 364 90 181 272 363 89 180 271 362

Julian Day

ug/m3

Figure A-3-10

District 24-Hour Average Upland TEOM Continuous PM10 (2005-2007)
ATTACHMENT - 3

Preliminary 2007 Continuous PM10 Monitoring Data
Table A-3-1

Preliminary* 2007 Downtown Los Angeles BAM Continuous 24-Hour Average 

PM10 Monitoring Data** (μg/m3)

Daily Concentrations Exceeding the Federal Standard (150 μg/m3) are in Bold Type

Day Month

1 2 3 4 5 6 7 8 9 10 11 12

1 47 28 28 42 30 36 38 37 40 34 42 26

2 39 38 31 43 29 37 43 32 43 41 49 26

3 39 36 28 37 30 31 46 41 44 39 51 30

4 32 32 28 46 33 35 57 34 45 34 34 41

5 34 36 28 54 25 25 69 24 39 31 38 45

6 46 49 37 34 25 34 39 26 31 33 38 32

7 38 49 39 25 33 42 38 31 30 31 42 22

8 43 50 44 23 30 39 28 34 30 32 36 23

9 39 47 34 30 36 37 30 35 27 37 30 18

10 49 43 43 36 40 37 28 35 32 31 29 25

11 32 18 43 40 39 38 25 35 40 32 29 27

12 20 26 39 104 37 42 28 32 44 33 33 26

13 27 22 43 46 38 40 31 37 39 17 38 30

14 32 31 34 36 43 38 34 43 44 29 37 44

15 44 36 52 26 40 36 29 42 37 28 34 40

16 44 40 44 39 41 33 35 44 33 24 44 30

17 35 34 46 41 37 35 36 43 27 33 52 37

18 39 28 27 26 35 41 27 45 39 39 52 20

19 39 20 26 28 35 37 31 40 31 38 57 13

20 26 28 25 13 34 37 36 45 23 36 58 18

21 33 36 24 28 38 35 49 29 50 53 23

22 38 17 32 24 32 44 36 33 14 108 43 30

23 40 20 35 23 30 37 37 31 19 69 31 26

24 50 27 29 31 33 42 31 33 28 50 40 24

25 42 30 30 40 32 43 37 27 37 56 31 46

26 40 36 29 35 37 50 53 28 35 77 44 44

27 20 18 37 47 35 50 34 31 40 49 46 21

28 23 18 24 43 29 51 32 30 27 34 50 27

29 34 35 33 31 43 28 40 28 42 44 25

30 24 41 39 33 38 30 48 36 32 36 37

31 22 39 38 33 46 39 37

Max 50 50 52 104 43 51 69 49 45 108 58 46

Days/Mth 31 28 30 30 31 30 31 31 30 31 30 31

Days/Qtr 89 91 92 92

* Data is preliminary and has not been certified or submitted to AQS

** Day required 18 hours of valid data 
Table A-3-2

Preliminary* 2007 Anaheim TEOM Continuous 24-Hour Average 

PM10 Monitoring Data** (μg/m3)

Daily Concentrations Exceeding the Federal Standard (150 μg/m3) are in Bold Type

Day Month

1 2 3 4 5 6 7 8 9 10 11 12

1 23 24 33

2 29 30 26

3 29 38 29

4 31 33 37

5 42 40 36

6 30 40 29

7 35 35 23

8 35 28 18

9 42 31 22

10 26 37 32

11 24 13 38 30

12 18 14 54 56

13 22 38 48

14 18 24 22

15 40 35 44 22

16 27 37 48 31

17 28 34 36 28

18 32 21 20 15

19 28 15 21 20

20 26 25 20 7

21 30 35 19 14

22 46 11 31 12

23 36 13 28 11

24 42 21 26 23

25 28 25 34 24

26 34 29 23 24

27 12 14 32 34

28 15 12 31 31

29 25 35 20

30 14 42 22

31 16 37

Max 46 42 54 56

Days/Mth 21 26 31 30 0 0 0 0 0 0 0 0

Days/Qtr 78 30 0 0

* Data is preliminary and has not been certified or submitted to AQS

** Day required 18 hours of valid data
Table A-3-3

Preliminary* 2007 Burbank TEOM Continuous 24-Hour Average 

PM10 Monitoring Data** (μg/m3)

Daily Concentrations Exceeding the Federal Standard (150 μg/m3) are in Bold Type

Day Month

1 2 3 4 5 6 7 8 9 10 11 12

1 30 20 11 31 29 36 30 39 31 24 33 26

2 29 27 24 42 21 30 42 35 30 29 35 25

3 39 25 25 36 20 26 44 33 31 24 27 30

4 24 18 22 43 28 28 49 32 28 28 25 40

5 33 28 21 44 16 25 76 21 30 20 29 36

6 41 44 24 34 14 29 38 24 23 19 27 29

7 29 40 30 24 17 36 26 23 20 18 32 11

8 31 33 28 20 20 34 22 28 18 21 28 16

9 34 41 31 24 41 34 27 31 15 30 21 7

10 40 22 35 33 24 37 31 32 23 33 18 21

11 21 11 24 36 36 37 22 31 26 28 25 32

12 9 16 28 69 31 42 22 26 31 28 23 13

13 14 11 40 29 31 45 34 30 33 15 36 29

14 18 15 30 27 39 46 41 42 35 19 43 32

15 36 29 41 18 38 43 31 42 27 26 33 31

16 39 29 38 35 32 33 41 40 24 22 41 25

17 33 17 31 37 28 30 39 43 25 28 37 26

18 10 21 25 16 25 39 28 36 31 41 33 11

19 29 12 22 21 25 37 31 37 23 35 44 7

20 25 22 16 13 26 39 44 33 10 45 50 10

21 20 27 12 15 22 39 39 36 20 34 42 17

22 37 8 20 13 29 42 35 38 10 93 30 28

23 34 5 22 12 29 35 35 29 14 58 28 26

24 42 13 21 23 30 38 38 32 20 56 36 17

25 30 25 24 27 37 43 38 24 23 64 35 32

26 36 25 25 36 34 46 45 19 27 81 44 33

27 11 9 20 43 30 40 30 24 26 41 47 16

28 14 7 15 40 23 41 32 28 20 29 49 26

29 27 23 32 28 40 27 44 15 34 45 24

30 15 44 35 29 36 33 67 22 32 34 29

31 10 29 30 34 48 34 25

Max 42 44 44 69 41 46 76 67 35 93 50 40

Days/Mth 31 28 31 30 31 30 31 31 30 31 30 31

Days/Qtr 90 91 92 92

* Data is preliminary and has not been certified or submitted to AQS

** Day required 18 hours of valid data
Table A-3-4

Preliminary* 2007 Lake Elsinore TEOM Continuous 24-Hour Average 

PM10 Monitoring Data** (μg/m3)

Daily Concentrations Exceeding the Federal Standard (150 μg/m3) are in Bold Type

Day Month

1 2 3 4 5 6 7 8 9 10 11 12

1 15 14 16 29 26 46 44 56 39 55 23

2 21 21 17 32 21 40 69 54 35 52 21

3 25 21 44 32 19 34 55 43 42 37 29

4 22 16 20 60 19 51 56 34 41 45 29

5 56 23 29 41 22 22 76 28 26 67 36

6 19 23 33 23 22 26 57 27 25 64 30

7 22 23 32 15 39 40 42 27 26 56 12

8 47 22 31 13 30 47 29 44 45 43 41 13

9 25 29 46 22 37 42 36 43 36 54 30 9

10 29 25 40 32 41 40 34 47 43 36 27 16

11 16 11 22 35 40 41 31 51 44 31 27 17

12 12 11 34 83 32 55 36 60 65 20 38 23

13 13 16 40 46 32 64 48 57 48 14 40 29

14 14 20 42 28 40 49 51 52 47 20 40 33

15 20 48 16 46 36 54 41 25 46 22

16 19 55 29 42 39 58 34 18 48 27

17 23 40 39 32 34 49 58 32 16 38 36

18 19 22 19 25 42 58 43 40 35 51 23

19 23 10 17 34 33 50 39 43 29 54 63 12

20 21 16 15 13 31 54 42 55 18 45 63 12

21 52 22 10 16 17 44 50 48 27 382 59 14

22 19 10 9 14 25 47 44 48 14 579 38 18

23 28 10 13 15 40 51 52 41 16 55 78 20

24 26 14 16 25 39 41 43 57 29 51 39 24

25 24 18 24 27 43 49 38 53 33 136 48 67

26 25 14 14 31 35 48 43 40 36 130 60 37

27 15 9 20 44 29 48 38 39 43 69 59 26

28 15 10 26 40 22 44 27 51 21 55 86 30

29 24 38 30 26 50 34 60 25 54 69 30

30 10 31 35 39 50 47 66 28 37 24 28

31 10 27 35 47 49 63

Max 56 40 55 83 43 64 76 66 65 579 86 67

Days/Mth 31 26 31 30 27 30 31 30 23 31 30 31

Days/Qtr 88 87 84 92

* Data is preliminary and has not been certified or submitted to AQS

** Day required 18 hours of valid data
Table A-3-5

Preliminary* 2007 Glendora TEOM Continuous 24-Hour Average 

PM10 Monitoring Data** (μg/m3)

Daily Concentrations Exceeding the Federal Standard (150 μg/m3) are in Bold Type

Day Month

1 2 3 4 5 6 7 8 9 10 11 12

1 16 22 11 27 30 31 38 45 37 27 35 19

2 12 21 12 33 23 27 41 36 37 27 34 10

3 17 17 14 32 24 21 46 38 32 27 29 10

4 18 7 13 42 22 26 59 31 32 27 26 10

5 17 20 18 44 18 24 135 24 34 28 35 20

6 24 24 17 30 17 27 44 25 27 15 33 21

7 18 34 23 17 13 34 35 26 27 10 41 12

8 17 27 28 15 17 35 22 33 28 20 35 10

9 20 36 30 19 30 36 27 37 20 28 21 5

10 25 25 34 28 28 35 23 39 25 20 17 8

11 21 10 13 32 31 36 23 36 28 22 21 9

12 10 10 18 68 38 41 22 30 34 21 13 9

13 8 10 25 28 35 45 27 32 34 10 13 12

14 9 15 31 22 40 43 33 51 32 15 17 15

15 18 20 46 15 37 34 27 47 29 20 22 9

16 15 12 54 29 34 35 36 52 29 18 36 11

17 13 12 34 34 32 29 36 48 27 18 34 19

18 15 13 23 15 29 32 33 37 32 18 33 9

19 19 9 18 20 30 39 28 37 21 20 33 6

20 18 17 15 10 26 39 36 33 14 29 41 8

21 22 25 12 11 13 33 36 39 15 43 31 11

22 24 10 17 10 23 43 35 39 8 61 27 9

23 17 6 24 8 27 36 32 33 10 39 20 6

24 17 11 24 18 28 37 32 38 18 28 17 10

25 14 18 26 22 30 44 36 29 25 57 16 40

26 23 21 22 32 29 44 35 23 22 78 21 22

27 16 10 15 40 26 41 31 27 30 50 29 15

28 14 6 18 41 18 41 23 27 22 18 50 15

29 24 23 33 22 40 27 41 19 35 31 21

30 15 23 33 26 40 33 53 14 26 14 19

31 12 23 31 36 48 32 14

Max 25 36 54 68 40 45 135 53 37 78 50 40

Days/Mth 31 28 31 30 31 30 31 31 30 31 30 31

Days/Qtr 90 91 92 92

* Data is preliminary and has not been certified or submitted to AQS

** Day required 18 hours of valid data
Table A-3-6

Preliminary* 2007 Long Beach TEOM Continuous 24-Hour Average 

PM10 Monitoring Data** (μg/m3)

Daily Concentrations Exceeding the Federal Standard (150 μg/m3) are in Bold Type

Day Month

1 2 3 4 5 6 7 8 9 10 11 12

1 44 29 15 37 23 29 32 34 33 27 35 22

2 33 34 24 32 23 24 37 30 35 32 39 23

3 35 33 28 35 26 23 36 37 37 38 35 22

4 26 23 21 43 27 31 52 22 34 24 24 54

5 36 36 28 42 21 18 42 17 26 55 26 45

6 55 31 35 28 23 36 37 19 22 28 27 27

7 41 30 30 23 25 36 35 20 21 23 38 18

8 40 36 29 18 40 34 21 24 19 25 24 21

9 39 28 30 23 38 31 21 28 17 29 20 14

10 63 18 34 33 33 32 18 32 23 17 21 21

11 40 12 35 36 31 31 15 39 29 23 24 18

12 20 15 39 82 37 38 18 32 31 21 25 23

13 27 17 28 46 35 39 27 37 37 10 29 31

14 33 28 24 25 39 30 25 38 37 15 37 32

15 49 28 39 30 36 27 24 38 33 19 42 32

16 42 40 37 35 36 29 25 39 24 19 23 24

17 29 25 31 33 24 28 27 34 24 22 25 24

18 37 23 15 36 23 27 22 35 30 37 33 9

19 35 14 17 30 24 30 22 35 29 40 43 7

20 26 22 16 16 21 36 26 36 18 32 25 11

21 33 29 18 17 20 31 26 28 18 205 29 21

22 42 15 29 14 28 27 25 24 14 138 31 24

23 40 10 22 17 27 28 26 27 15 69 31 19

24 45 18 23 28 27 33 21 29 22 63 30 20

25 38 25 28 33 29 33 31 18 34 74 31 77

26 45 28 20 30 26 38 34 17 33 50 41 29

27 16 13 37 43 21 42 31 21 28 41 49 18

28 19 11 34 31 16 34 24 24 24 32 49 25

29 29 39 24 20 33 21 35 21 34 49 24

30 19 37 23 27 31 22 37 26 25 24 27

31 20 35 27 25 37 36 26

Max 63 40 39 82 40 42 52 39 37 205 49 77

Days/Mth 31 28 31 30 31 30 31 31 30 31 30 31

Days/Qtr 90 91 92 92

* Data is preliminary and has not been certified or submitted to AQS

** Day required 18 hours of valid data
Table A-3-7

Preliminary* 2007 Mira Loma TEOM Continuous 24-Hour Average 

PM10 Monitoring Data** (μg/m3)

Daily Concentrations Exceeding the Federal Standard (150 μg/m3) are in Bold Type

Day Month

1 2 3 4 5 6 7 8 9 10 11 12

1 35 24 26 54 34 40 57 48 55 49 55 24

2 43 38 33 51 28 33 67 48 80 47 53 27

3 51 39 41 43 31 28 69 50 50 51 50 45

4 35 29 23 58 30 42 69 40 51 46 52 63

5 70 49 44 50 26 23 112 25 50 40 41 45

6 41 56 56 33 41 27 59 35 39 24 43 37

7 99 56 51 19 49 44 50 36 47 56 44 13

8 32 51 44 21 54 49 35 44 45 47 39 14

9 55 68 40 27 58 44 41 49 41 61 29 8

10 62 50 55 39 51 46 38 43 45 40 27 19

11 38 16 56 42 48 45 35 44 59 27 37

12 14 16 60 88 48 58 46 49 65 27 47

13 22 18 60 67 48 61 56 56 59 9 54

14 23 25 37 44 47 52 59 95 61 18 51

15 77 37 56 21 43 49 38 57 55 18 54

16 40 38 70 37 39 45 52 60 47 20 61

17 52 33 37 45 42 37 56 70 30 19 43

18 37 28 24 35 40 42 50 116 43 36 47

19 33 12 21 43 38 53 47 60 24 55 64 9

20 34 28 26 16 31 60 47 74 18 48 69 12

21 65 35 17 19 15 61 45 61 28 581 49

22 36 12 35 18 25 55 45 45 14 145 36

23 57 16 38 15 38 48 43 38 14 55 60

24 69 24 32 33 45 44 40 44 28 82 42

25 55 26 40 37 42 54 44 41 40 108 54

26 55 24 30 37 36 56 51 37 47 123 69

27 28 12 35 57 30 55 51 39 49 97 78 29

28 31 15 40 47 22 60 50 46 21 65 88 38

29 52 50 33 30 63 39 61 26 65 81 42

30 22 51 35 35 61 45 68 33 39 28 40

31 15 47 38 41 62 53 49

Max 99 68 70 88 58 63 112 116 80 581 88 63

Days/Mth 31 28 31 30 31 30 31 31 30 31 30 17

Days/Qtr 90 91 92 78

* Data is preliminary and has not been certified or submitted to AQS

** Day required 18 hours of valid data
Table A-3-8

Preliminary* 2007 Rubidoux TEOM Continuous 24-Hour Average 

PM10 Monitoring Data** (μg/m3)

Daily Concentrations Exceeding the Federal Standard (150 μg/m3) are in Bold Type

Day Month

1 2 3 4 5 6 7 8 9 10 11 12

1 41 21 21 42 33 33 57 52 60 51 62 28

2 31 33 19 46 27 30 71 65 55 57 32

3 43 37 21 32 24 28 73 55 47 61 52 48

4 34 26 25 48 24 34 78 44 50 56 63 44

5 22 40 30 42 23 104 31 52 36 46 56

6 27 45 44 29 31 66 34 41 30 48 49

7 40 44 41 20 39 57 56 36 44 58 16

8 34 43 37 22 42 69 42 45 52 46 16

9 45 46 32 24 47 54 48 53 36 66 34 10

10 49 40 48 30 42 60 45 51 47 44 32 17

11 31 15 35 38 40 57 36 57 76 37 44 26

12 12 14 52 75 39 67 39 55 28 46 34

13 15 15 48 42 39 72 51 65 62 16 57 39

14 22 23 29 41 38 63 58 81 63 22 50

15 67 31 49 18 35 58 40 72 63 22 35

16 41 25 65 29 32 51 52 73 55 21 75 37

17 41 21 38 36 36 45 52 64 37 21 55 42

18 24 24 26 23 34 52 47 53 51 45 63 31

19 27 12 22 38 31 63 52 59 32 58 10

20 39 21 20 15 28 65 69 22 69 12

21 30 30 12 20 15 68 49 74 275 61 13

22 43 12 23 18 22 69 45 56 107 42 17

23 47 13 26 17 33 61 43 44 68 54 22

24 49 19 27 30 35 49 46 52 79 57 33

25 35 24 36 34 35 57 48 47 116 51 168

26 39 21 26 32 33 72 53 39 54 145 69 45

27 25 12 21 47 31 68 61 48 56 96 80 22

28 25 14 29 46 24 60 44 45 29 65 87 48

29 38 38 33 28 64 40 74 28 72 73 44

30 19 44 32 31 66 43 71 34 41 38 40

31 14 44 32 44 62 45

Max 67 46 65 75 47 72 104 81 76 275 87 168

Days/Mth 31 28 31 30 31 28 30 29 22 31 26 31

Days/Qtr 90 89 81 88

* Data is preliminary and has not been certified or submitted to AQS

** Day required 18 hours of valid data
Table A-3-9

Preliminary* 2007 San Bernardino TEOM Continuous 24-Hour Average 

PM10 Monitoring Data** (μg/m3)

Daily Concentrations Exceeding the Federal Standard (150 μg/m3) are in Bold Type

Day Month

1 2 3 4 5 6 7 8 9 10 11 12

1 29 24 16 38 37 51 45 55 42 39 58 21

2 27 36 16 44 27 40 55 50 46 40 25 18

3 32 28 21 44 24 36 58 49 38 39 37 29

4 40 17 18 57 27 47 65 41 42 43 49 24

5 18 29 30 55 18 38 90 31 44 32 68 40

6 22 38 41 40 23 30 56 37 44 30 70 38

7 43 43 23 32 42 37 41 21 64 13

8 39 39 22 38 47 40 37 39 49 14

9 49 44 29 49 44 50 33 51 32 9

10 40 41 36 42 45 50 40 44 25 18

11 29 15 18 45 41 45 30 50 45 37 35 18

12 11 14 41 99 47 52 32 45 43 32 25 22

13 14 14 47 40 40 59 46 44 53 14 36 22

14 16 19 47 33 47 67 53 60 53 22 38 40

15 18 27 52 14 41 44 37 56 45 31 41 24

16 22 17 67 29 38 41 47 64 37 22 49 20

17 33 13 51 38 39 37 56 57 33 24 52 36

18 25 20 35 22 38 48 44 39 47 34 57 25

19 24 9 30 33 35 47 42 46 26 40 61 11

20 30 21 27 14 30 44 46 51 17 44 66 13

21 27 27 15 17 16 49 47 52 28 171 37 12

22 16 11 21 16 23 46 46 60 14 152 37 19

23 39 8 31 15 42 51 46 46 16 99 44 16

24 36 13 31 30 44 42 47 49 28 114 36 21

25 34 19 37 31 45 51 43 48 36 89 33 49

26 35 20 37 39 41 50 45 38 37 109 47 34

27 23 9 35 47 36 53 44 38 46 88 51 19

28 24 10 32 50 30 48 32 43 25 44 55 32

29 40 35 44 38 51 37 50 24 49 60 33

30 13 39 44 48 48 44 57 27 36 24 31

31 13 40 44 48 58 50 26

Max 40 49 67 99 49 67 90 64 53 171 70 49

Days/Mth 27 28 31 30 31 30 27 31 30 31 30 31

Days/Qtr 86 91 88 92

* Data is preliminary and has not been certified or submitted to AQS

** Day required 18 hours of valid data
Table A-3-10

Preliminary* 2007 Upland TEOM Continuous 24-Hour Average 

PM10 Monitoring Data** (μg/m3)

Daily Concentrations Exceeding the Federal Standard (150 μg/m3) are in Bold Type

Day Month

1 2 3 4 5 6 7 8 9 10 11 12

1 42 38 33 69 70 72 91 90 40 25 37 19

2 41 62 39 74 46 69 105 81 44 33 29 18

3 49 48 40 69 46 59 106 80 31 31 25 21

4 49 33 34 98 50 70 112 65 29 29 28 21

5 62 54 52 93 32 49 230 48 34 28 36 22

6 73 60 57 64 44 53 94 54 30 20 42 23

7 50 72 51 37 46 69 80 56 31 18 46 11

8 64 77 69 36 55 76 52 32 25 32 11

9 60 104 73 43 71 73 58 32 26 31 18 9

10 67 74 89 63 73 72 56 40 34 23 15 10

11 48 20 42 74 82 78 43 39 36 22 24 15

12 40 26 58 135 83 89 52 38 35 20 17 16

13 37 30 63 92 79 96 70 33 38 10 19 18

14 29 41 70 56 83 101 78 45 39 17 23 28

15 55 46 104 37 82 81 55 46 39 19 24 21

16 49 41 119 64 75 71 69 55 31 19 36 20

17 53 29 89 74 74 62 75 48 26 17 39 22

18 44 34 54 51 72 69 62 37 34 25 40 15

19 47 21 44 50 66 82 60 39 23 29 27 7

20 48 42 35 24 59 90 71 42 14 31 40 8

21 55 67 22 35 32 78 72 37 19 70 38 14

22 68 22 37 34 51 85 70 41 11 82 30 17

23 53 21 58 26 66 83 74 32 12 55 29 13

24 72 30 52 50 72 77 70 39 21 45 23 17

25 52 42 67 54 73 86 72 34 28 73 23 32

26 53 44 48 65 69 99 71 26 30 91 30 22

27 40 36 93 62 89 71 29 33 57 35 20

28 42 58 93 48 90 53 29 20 23 53 21

29 63 59 72 55 79 51 38 19 35 39 28

30 40 68 70 64 94 64 53 17 21 18 24

31 25 67 69 69 47 32 23

Max 73 104 119 135 83 101 230 90 44 91 53 32

Days/Mth 31 26 31 30 31 30 31 30 30 31 30 31

Days/Qtr 88 91 91 92

* Data is preliminary and has not been certified or submitted to AQS

** Day required 18 hours of valid data
ATTACHMENT - 4

PM10 Attainment Demonstration
INTRODUCTION

The analysis provided in this attachment updates the Basin PM10 attainment 

demonstration presented in the 2007 AQMP. The modeling methodology used to 

estimate future year PM10 is essentially the same as that listed in the 2007 AQMP, 

Appendix V, Chapter 2 with three modifications. First, the modeling is conducted to 

estimate the more conservative annual maximum concentration as opposed to the 

annual second maximum concentration predicted for the attainment demonstration. 

Second, in the 2007 PM10 attainment demonstration, growth in the directly emitted 

coarse fraction of PM10 was treated as a constant from the 2005 base-year through 

2015. This reflected the minimal change in Basin annual average day PM10 

emissions through the period. The scope of this analysis extends beyond 2015. 

Projected growth in the PM10 baseline emissions through 2030 will impact the future 

year coarse fraction of the particulate mass and as such is incorporated in the 

estimated maximum PM10 concentrations. Lastly, the 2007 AQMP attainment 

demonstration was conducted for individual stations for a 2003-2005 design value. 

The Rubidoux monitoring site was selected as the design site for the attainment 

demonstration. This analysis evaluates the maximum future-year PM10 

concentrations for each of the four counties in the Basin. The base-year design 

concentration is replaced by the maximum concentration observed in each of the 

counties for the period 2005 through 2007. 

MODELING INVENTORIES

Table A-4-1 provides the modeling attainment inventories used to determine the 

future year PM10 concentrations. The inventories include for 2005 the annual 

average day emissions for PM2.5, NOx, SOx and VOC and the respective baseline 

emissions 2010 through 2012 (the start of the maintenance period dependent upon 

plan approval by U.S. EPA), 2014 (the Basin attainment date for annual average 

PM2.5), 2020 and 2023 (bracketing the expected horizon-year), and 2030. These 

emissions were used in the CAMx regional PM2.5 annual simulations to determine 

the relative reduction factors (RRFs) for estimating baseline future year PM2.5.

Two sets of PM10 emissions are included in Table V-4-1: the 2005 annual average 

day baseline emissions and the baseline for 2010 through 2030. The second set, 

adds 20 TPD PM10 emissions to the baseline emissions inventory for 2010 through 

2030. The additional emissions are used to test the Basin capacity to maintain

attainment for scenarios where additional mobile source emissions are included in the 

future year projections. Emissions based rollback is used to determine rollback 

factors (similar to RRF’s) to be applied to the coarse portion of the PM10 (PM10-

PM2.5) mass for future year coarse particulate estimation. 
MODELING METHODOLOGY

Future year PM10 concentrations were calculated using a combination of two 

modeling methodologies: (1) the regional simulations of PM2.5 for baseline 

emissions to develop relative reductions factors (RRF) to estimate the “fine portion” 

of the PM10 mass and (2) baseline PM10 emissions rollback to project the “coarse 

portion” of the PM10 mass. The following steps summarize he analysis: 

Step-1: Selection of the Alternate Design Values. 

The design values used in the updated attainment modeling analyses were determined 

from the annual maximum concentrations monitored at FRM monitoring sites in the 

Basin from 2005 through 2007. The highest annual maximum PM10 concentration 

observed during the three years 2005 through 2007 was selected from each site to 

conservatively represent the potential peak concentration. (Data flagged as an 

exceptional event were excluded from the analysis). The data were aggregated by 

county and the peak concentration observed over the three year period for each 

county was designated as the alternate PM10 design value. The 2005 maximum 

PM10 concentration (131 μg/m

3

) observed at the South Coastal LA County-2

monitoring station was designated as the design value for Los Angeles County. 

Similarly, the 2006 maximum concentrations observed at the Central Orange County 

(104 μg/m3) and Central San Bernardino Valley-1 (142 μg/m3) monitoring sites 

served as the representative alternate design concentrations for Orange and San 

Bernardino Counties respectively. The 2007 maximum PM10 concentration 

observed at the Mira Loma (142 μg/m3) monitoring station was designated as the 

design value for Riverside county. Table A-4-2 summarizes the design value 

selection. 

Step-2: Defining the PM Fine and PM Coarse of the PM10 Mass

The fine and coarse fractions of the site specific PM10 mass were determined by a 

county averaged ratio between co-located PM2.5 and PM10 annual maximum 

concentrations. The ratio of PM2.5 to PM10 (PM2.5/PM10) was then aggregated 

from station estimates to develop a county level split profile. The highest annual 

maximum PM10 concentration observed during the three years 2005 through 2007 

for each county were then multiplied by the county level ratios of PM2.5/PM10 

design values to determine the fine and coarse portion of the design mass. Table A4-3 lists the PM2.5/PM10 ratio and the estimated fine and coarse mass for the county 

design values. 

Step-3 Define the PM2.5 RRFs

Future year predictions of the PM2.5 portion of the maximum 24-hour average PM10 

were calculated using the RRFs developed from the annual PM2.5 simulations using 
the baseline emissions inventories for 2005, 2010, 2011, 2012 2014, 2020, 2023 and

2030. The PM2.5 RRFs were calculated from the CAMx regional modeling output

for the eight sites in the Basin where speciated PM2.5 data were measured in 2005. 

(Appendix V of the 2007 AQMP describes the CAMx regional modeling and the 

development of the RRFs for the eight sites and the spatial interpolation throughout 

the Basin). The comprehensive site specific RRFs reflect the reductions due to 

emissions reductions in the baseline inventories applied to the individual PM2.5 

species. The RRFs at Anaheim, Rubidoux and Fontana served as county RRF’s for 

Orange, Riverside and San Bernardino Counties respectively. The average of the 

five Los Angeles County stations calculated RRFs (including Los Angeles, Long 

Beach, Burbank, Compton, and Wilmington) was used as representative of the Los 

Angeles County RRF. Future year PM2.5 was calculated by multiplying the 

estimated base year county maximum annual maximum PM2.5 concentration by 

county RRF for the milestone years. Tables A-4-4 and A-4-5 provides the station 

and representative county RRF’S for the milestone years. 

Step-4: Define the PM10 “Coarse” Rollback Factors

As a conservative approach, the 2007 AQMP held the coarse portion of the Basin 

particulate mass constant for the 2015 update to the PM10 attainment demonstration. 

This modeling update extends the analysis out to 2030. The inventory projections of 

baseline PM10 emissions from the 2005 baseline emissions levels show nominal 

reductions by about 1 percent by 2010 but increases for simulation years beyond 

2012. Baseline PM10 emissions for 2020, 2023 and 2030 show 5, 8 and 15 percent 

increases respectively over 2005 emissions levels. Emissions based rollback factors, 

calculated as the future year baseline emissions divided by 2005 emissions were 

generated to estimate the future year expected impacts to the coarse portion of the 

PM10 from directly emitted particulates. Estimation of the future year PM10 coarse 

particulate concentrations was conducted by multiplying the factors to the coarse 

portion of the design concentrations. Table A-4-6 provides the emissions rollback 

factors for the future year baseline emissions and the assumption where 20 TPD 

PM10 is added to the 2010, 2011, 2012 2014, 2020, 2023 and 2030 baseline 

emissions inventories.

Step-5: Calculation of the Future Year Air Quality

Future year PM10 air quality was directly calculated as the sum of the future year 

“fine” concentration (RRF X PM2.5 portion of the design .concentration) and the 

future year “coarse” concentration (rollback factor X coarse portion of the design 

concentration). 
FUTURE YEAR AIR QUALITY SUMMARY

Revised PM10 Baseline Attainment Demonstration

Table A-4-7 summarizes the revised 24-hour average PM10 attainment 

demonstration for the baseline emissions. All counties meet the federal PM10 

standard of 150 μg/m3in all years. The 2010 predicted highest maximum 

concentration in the Basin occurs in San Bernardino County (126 μg/m3). The 

concentration is projected to be 84 percent of the federal standard. The peak 

concentration predicted for 2023 and 2030 again occurs in San Bernardino at values

of 128 and 136 μg/m3respectively. The respective predicted PM10 concentrations 

would be 85 and 91 percent of the standard.

PM10 Baseline with 20 Additional TPD 

Table A-4-8 summarizes the 24-hour average PM10 baseline attainment 

demonstration when the additional PM10 emissions from mobile sources (20 TPD in 

2010 through 2030) are added to the future year baseline emissions. All counties 

continue meet the federal PM10 standard of 150 μg/m3in all years. Nominal 

increases of 3-5 μg/m3are projected for each county and year with the additional 

emissions however the spatial pattern remains unchanged. The 2010 through 2012 

predicted highest maximum concentrations in the Basin occur in San Bernardino 

County (131 μg/m3). The concentration is projected to be 87 percent of the federal 

standard. The peak concentration predicted for 2023 and 2030 again occurs in San 

Bernardino at 133 μg/m3in 2023 and 141 μg/m3in 2030. The predicted PM10 

concentration would be 89 percent of the standard in 2023 and 94 percent of the 

standard in 2030.
TABLE A-4-1

2007 AQMP Updated Basin Annual Baseline Average Day Attainment

Emission Inventories (TPD)

CATEGORY 2005 2010 2011 2012 2014 2020 2023 2030

PM2.5 99.1 101.4 101.5 101.6 101.6 103.2 105.2 113.6

NOX 1093.2 774.7 742.9 711.6 653.6 525.2 506.4 511.8

VOC 844.2 572.4 559.4 547.9 527.7 498.5 495.7 508.4

SOX 53.3 39.2 40.1 40.7 42.8 50.4 55.1 71.7

PM10 Baseline 285.4 280.9 283.0 284.8 288.7 300.3 307.7 329.6

PM10 Baseline with 

20 Additional TPD 285.4 300.9 303.0 304.8 308.7 320.3 327.7 349.6
TABLE A-4-2

PM10 Design Value Selection

(3-Year County Maximum in Bold)

Monitoring Location Maximum 24-Hour Average Concentration 

(μg/m3)

2005 2006 2007

Los Angeles County

Central LA 70 59 78

Southwest Coastal LA County 44 45 128

South Coastal LA County 1 66 78 75

South Coastal LA County 2 131 117 123

East San Fernando Valley 92 71 109

East San Gabriel Valley 1 76 81 83

Santa Clarita Valley 55 53 131

Orange County

Central Orange County 65 104 75

Saddleback Valley 1 41 57 74

Riverside County

Norco/Corona 79 74 93

Metropolitan Riverside County 1 123 109 118

Mira Loma -- 124 142

Perris Valley 80 125 120

Banning Airport 76 75 78

San Bernardino County

Southwest San Bernardino 

Valley

74 78 115

Central San Bernardino Valley 1 108 142 111

Central San Bernardino Valley 2 72 92 136

East San Bernardino Valley 61 103 97

Central San Bernardino 

Mountains

49 63 89
TABLE A-4-3

PM2.5/PM10 Ratio and Estimated Fine and Coarse Mass

County Peak PM10

2005-2007

(μg/m3)

Design

PM2.5/PM10

Fine

Mass

(μg/m3)

Coarse

Mass

(μg/m3)

Los Angeles 131 0.603 79 52

Orange 104 0.595 62 42

Riverside 142 0.573 81 61

San Bernardino 142 0.486 69 73

TABLE A-4-4

PM2.5 Station Relative Response Factors (RRF) Baseline Emissions Simulations

Station Baseline RRF Fine

2010 2011 2012 2014 2020 2023 2030

Burbank 0.87 0.86 0.85 0.84 0.80 0.80 0.81

Compton 0.58 0.58 0.57 0.57 0.56 0.56 0.57

Los Angeles 0.60 0.60 0.59 0.59 0.57 0.57 0.58

Long Beach 0.55 0.54 0.54 0.53 0.52 0.52 0.54

Wilmington 0.58 0.57 0.57 0.56 0.56 0.56 0.59

Anaheim 0.60 0.60 0.59 0.59 0.58 0.58 0.60

Rubidoux 0.74 0.72 0.70 0.68 0.65 0.65 0.67

Fontana 0.78 0.77 0.76 0.75 0.72 0.72 0.75
TABLE A-4-5

PM2.5 “Fine” Baseline County Average Relative Response Factors (RRF)

County

Baseline RRF Fine

2010 2011 2012 2014 2020 2023 2030

Los Angeles 0.64 0.63 0.62 0.62 0.60 0.60 0.62

Orange 0.60 0.60 0.59 0.59 0.58 0.58 0.60

Riverside 0.74 0.72 0.70 0.68 0.65 0.65 0.67

San Bernardino 0.78 0.77 0.76 0.75 0.72 0.72 0.75

TABLE A-4-6

Particulate “Coarse” Baseline Emissions Based Rollback Factors 

Year Rollback Factor

Baseline Attainment 

Demonstration

Baseline Attainment 

Demonstration

With Additional 20 TPD 

PM10

2010 0.98 1.05

2011 0.99 1.06

2012 1.00 1.07

2014 1.01 1.08

2020 1.05 1.12

2023 1.08 1.15

2030 1.15 1.22
TABLE A-4-7

Revised 24-Hour Average PM10 (μg/m3) Baseline Attainment Demonstration

County 2010 2011 2012 2014

Fine Coarse Total 

Mass

Fine Coarse Total 

Mass

Fine Coarse Total 

Mass

Fine Coarse Total 

Mass

Los 

Angeles 51 51 102 50 52 101 49 52 101 49 53 102

Orange

37 41 79 37 42 79 37 42 78 37 43 79

Riverside

60 60 120 58 60 119 57 61 118 55 62 117

San 

Bernardino 54 72 126 53 72 125 52 73 125 52 74 126

County 2020 2023 2030

Fine Coarse Total 

Mass

Fine Coarse Total 

Mass

Fine Coarse Total 

Mass

Los 

Angeles 47 55 102 47 56 103 49 60 109

Orange

36 44 80 36 45 81 37 48 86

Riverside

53 64 117 53 66 118 54 70 125

San 

Bernardino 50 77 126 50 79 128 52 84 136
TABLE A-4-8

Revised 24-Hour Average PM10 (μg/m3) Attainment Demonstration with 20 TPD PM10 

Added to the Baseline Emissions

County 2010 2011 2012 2014

Fine Coarse Total 

Mass

Fine Coarse Total 

Mass

Fine Coarse Total 

Mass

Fine Coarse Total 

Mass

Los 

Angeles 51 55 105 50 55 105 49 56 105 49 56 105

Orange

37 44 81 37 45 82 37 45 81 37 45 82

Riverside

60 64 124 58 65 123 57 65 122 55 66 121

San 

Bernardino 54 77 131 53 78 131 52 78 130 52 79 131

County 2020 2023 2030

Fine Coarse Total 

Mass

Fine Coarse Total 

Mass

Fine Coarse Total 

Mass

Los 

Angeles 47 58 106 47 60 107 49 64 113

Orange

36 47 83 36 48 84 37 51 89

Riverside

53 68 121 53 70 123 54 75 129

San 

Bernardino 50 82 132 50 84 133 52 89 141
ATTACHMENT -5

U.S. EPA Approval of the South Coast Air Basin PM10 State 

Implementation Plan
Federal Register Environmental Documents

 Approval and Promulgation of State Implementation Plans for Air Quality Planning Purposes; California--South Coast and Coachella 

APPROVAL AND PROMULGATION OF STATE IMPLEMENTATION PLANS FOR AIR QUALITY PLANNING PURPOSES; CALIFORNIA--SOUTH 

COAST AND COACHELLA

[Federal Register: November 14, 2005 (Volume 70, Number 218)]

[Rules and Regulations]

[Page 69081-69085]

From the Federal Register Online via GPO Access [wais.access.gpo.gov]

[DOCID:fr14no05-20]

=======================================================================

-----------------------------------------------------------------------

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[CA-314-0483; FRL-7975-7]

Approval and Promulgation of State Implementation Plans for Air 

Quality Planning Purposes; California--South Coast and Coachella

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: EPA is taking final action to approve state implementation 

plan (SIP) revisions submitted by the State of California to provide 

for attainment of the particulate matter (PM-10) national ambient air 

quality standards (NAAQS) in the Los Angeles-South Coast Air Basin and 

the Coachella Valley Area, and to establish emissions budgets for these 

areas for purposes of transportation conformity. EPA is also approving 

revisions to fugitive dust regulations and ordinances for the areas. 

EPA is approving these SIP revisions under provisions of the Clean Air 

Act (CAA) regarding EPA action on SIP submittals, SIPs for national

primary and secondary ambient air quality standards, and plan 
requirements for nonattainment areas.

DATES: This rule is effective on December 14, 2005.

ADDRESSES: You can inspect copies of the docket for this action at 

EPA's Region IX office during normal business hours by appointment at 

the following location: EPA Region IX, 75 Hawthorne Street, San 

Francisco, CA 94105-3901. A reasonable fee may be charged for copying 

parts of the docket.

 Copies of the SIP materials are also available for inspection at 

the following locations: California Air Resources Board, 1001 I Street, 

Sacramento, California, 95812. South Coast Air Quality Management 

District, 21865 E. Copley Drive, Diamond Bar, California, 91765.

 The 2003 Air Quality Management Plan, which includes the South 

Coast PM10 plan, is electronically available at: 

http://www.aqmd.gov/aqmp/AQMD03AQMP.htm

 The 2003 Coachella Valley PM10 State Implementation Plan is at: 

http://www.aqmd.gov/aqmp/docs/f2003cvsip.pdf

 The fugitive dust rules are at: 

http://www.aqmd.gov/rules/rulesreg.html

FOR FURTHER INFORMATION CONTACT: Dave Jesson, EPA Region IX, at (415) 

972-3957, or jesson.david@epa.gov.

SUPPLEMENTARY INFORMATION: Throughout this document, ``we,'' ``us,'' 

and ``our'' refer to EPA.

Table of Contents

I. Summary of Proposed Action

II. Public Comments

III. EPA Action

IV. Administrative Requirements

I. Summary of Proposed Action

 On July 28, 2005 (70 FR 43663), we proposed to approve 2003 plan 

amendments for the South Coast Air Basin (or ``South Coast''), as the 

plan amendments pertain to attainment of the 24-hour and annual PM-10 
NAAQS.\1\ We also proposed to approve revisions to the PM-10 plan for 

the Coachella Valley Planning Area (``Coachella Valley'').\2\ We 

proposed to approve the plans'' PM-10 motor vehicle emissions budgets 

for purposes of transportation conformity. Finally, we proposed to 

approve revisions to Rules 403, 403.1, and 1186 of the South

[[Page 69082]]

Coast Air Quality Management District (SCAQMD) regulating fugitive dust 

emissions, and revised fugitive dust ordinances for Coachella Valley 

jurisdictions. These revisions update, improve, strengthen, and 

supplement the approved SIP provisions for control of PM-10 and PM-10 

precursors in the two areas.

---------------------------------------------------------------------------

 \1\ The nonattainment area includes all of Orange County and the 

more populated portions of Los Angeles, San Bernardino, and 

Riverside Counties. For a description of the boundaries of the Los 

Angeles-South Coast Air Basin Area, see 40 CFR 81.305.

 \2\ The Coachella Valley Planning Area is in central Riverside 

County in the Salton Sea Air Basin. The boundary is defined at 40 

CFR 81.305.

---------------------------------------------------------------------------

 Our proposal was based on the following SIP submittals by the State 

of California:

 (1) That portion of the 2003 South Coast Air Quality Management 

Plan (``2003 South Coast AQMP''), including motor vehicle emissions 

budgets, adopted by the SCAQMD on August 1, 2003, and submitted to us 

on January 9, 2004, that pertains to PM-10;

 (2) the 2003 Coachella Valley PM10 State Implementation Plan 

(``2003 Coachella Valley Plan''), including motor vehicle emissions 

budgets, adopted by the SCAQMD on August 1, 2003, and submitted to us 

on January 9, 2004;

 (3) revisions to Rules 403, 403.1, and 1186, adopted by SCAQMD on 

April 2, 2004, and submitted by CARB on July 29, 2004;

 (4) revisions to the implementation handbooks for Rules 403 and 

403.1, adopted by SCAQMD on April 2, 2004, and submitted by CARB on 

November 16, 2004; and

 (5) revised Coachella Valley ordinances, which were adopted by the 

local jurisdictions on various dates in 2003 and 2004, and submitted by 
CARB on November 16, 2004.

 Our proposal contains detailed information on these SIP submittals 

and our evaluation of the submittals against applicable CAA provisions 

and EPA policies relating to serious area PM-10 SIPs.

II. Public Comments

 We received two public comments. The first comment was from SCAQMD 

(e-mail from Jill Whynot, dated August 26, 2005), requesting that we 

annotate Table 1 (``South Coast PM-10 Control Measures''), with a 

footnote updating information on certain of the measures, and Table 2 

(``South Coast Emission Reduction Commitments), with a footnote 

providing an update on the implementation of measure CMB-07. We have 

inserted new footnote 3 in Table 1 and new footnote 1 in Table 2, 

below, as requested by SCAQMD.

 With respect to the note on Table 1, the SCAQMD referenced material 

provided on Agenda Item #39 for the December 3, 2004 Governing 

Board meeting.\3\ The PRC-03 emission reduction commitment for underfired charbroilers was projected to be 0.2 tons per day (tpd) of PM-10 

by 2006 and 1.0 tpd by 2010. Substitute reductions come from the 

implementation of Rules 1186 and 403. The reductions in excess of the 

AQMP commitment are estimated to be 0.7 tpd starting in 2005 for Rule

403 and 0.28 tpd for Rule 1186 starting in 2006, for a total of 0.98 

tpd of PM-10. With growth factors applied, the reduction is estimated 

to be 1.04 tpd of PM-10 in 2010. Emission reductions from these two 

rules are not counted in the 2003 South Coast AQMP, and thus 0.28 tpd 

in 2006 and 1.0 tpd of PM-10 reductions in 2010 may be substituted for 

the SIP commitment for PRC-03. This ensures that the plan will continue 

to meet the requirements for reasonable further progress and attainment.

---------------------------------------------------------------------------

 \3\ This supplemental information is incorporated in the Docket 

for this rulemaking and it is also available electronically at: 

http://www.aqmd.gov/hb/2004/041239a.html

 Table 1.--South Coast PM-10 Control Measures

 [Source: South Coast 2003 AQMP, Appendix IV-A]

------------------------------------------------------------------------

 2006 reduction

 Control measure No. Control measure title target in tons

 per day
------------------------------------------------------------------------

 Remaining 2002 SIP Control Measures

------------------------------------------------------------------------

CMB-07......................... Emission Reductions 2.1

 from Petroleum

Refinery Flares (SOx).

CMB-09 \1\..................... Petroleum Refinery 0.1, 0

 Fluid Catalytic

Cracking Units (PM-10,

NH3).

WST-01 \1\..................... Emission Reductions 4.2, 8.7

 from Livestock Waste

(VOC, NH3).

WST-02 \1\..................... Emission Reductions 1.2, 1.9

 from Composting (VOC,

 NH3).

PRC-03 (P2).................... Emission Reductions 0.2

 from Restaurant

Operations (PM-10) \3\.

--------------------------------

 New Control Measures

------------------------------------------------------------------------

BCM-07 \1\..................... Further PM10 Reductions TBD

 from Fugitive Dust

 Sources (PM-10).

BCM-08 \1\..................... Further Emission 0.6

 Reductions from

Aggregate and Cement

Manufacturing

 Operations (PM-10).

MSC-04......................... Miscellaneous Ammonia TBD

 Sources (NH3).

MSC-06......................... Wood-Burning Fireplaces TBD

 and Wood Stoves (PM-

 10).

TCB-01 \2\..................... Transportation 0

 Conformity Backstop

Measure (PM-10).

------------------------------------------------------------------------

\1\ These measures have already been adopted by SCAQMD. Revisions to

 Rules 403 and 1186 fulfill BCM-07; new Rule 1127 (Emission Reductions
 from Livestock Waste, adopted 8/6/04) addresses WST-01; new Rule

 1133.2 (Emission Reductions from Co-Composting Operations, adopted 1/

 10/03) responds to WST-02 commitments; new Rule 1105.1 (Reduction of

 PM-10 and Ammonia Emissions from Fluid Catalytic Cracking Units,

 adopted 11/7/03) meets the CMB-09 commitment; and new Rule 1157 (PM-10

 Emissions Reductions from Aggregate and Related Operations, adopted 1/

 07/05) fulfills the BCM-08 commitment.

\2\ This measure, which is intended to achieve reductions in PM-10 after

 the 2006 attainment date, is discussed below and in Section II.G.,

 Motor Vehicle Emission Budgets.

\3\ In December 2004, the SCAQMD Governing Board made a finding at a

 public hearing that further reductions for this category were

 infeasible at this time. Emission reductions from Rules 403--Fugitive

 Dust, and 1186--PM-10 Emissions from Paved and Unpaved Roads, and

 Livestock Operations, were substituted for the emission reduction

 commitments for PRC-03.

[[Page 69083]]

Table 2.--South Coast Emission Reduction Commitments--Commitments To Adopt and Implement New Measures To Achieve

 Emission Reductions in Tons per Day From 2010 Planning Inventory

 [Source: South Coast 2003 AQMP, Table 4-8A]

----------------------------------------------------------------------------------------------------------------

 VOC PM-10 NOX SOX\1\

 Year -------------------------------------------------------------------------------

 Adopt Impl Adopt Impl Adopt Impl Adopt Impl

----------------------------------------------------------------------------------------------------------------

2004............................ 2.0 0 1.7 0 3.0 0 2.1 0

2005............................ 2.0 0 0 0.16 2.1 0 0 2.1

2006............................ 0 4.8 0 0.86 0 0 0 0

----------------------------------------------------------------------------------------------------------------

\1\ Compliance reports from the current version of Rule 1118--Emissions from Refinery Flares, show that these

 emission reductions have already been achieved since 2003. Amendments to Rule 1118 currently being developed,

 and scheduled for consideration by the SCAQMD Governing Board in 2005, would maintain the current reductions

 and seek additional reductions.

 As noted in our proposal, the 2003 Coachella Valley Plan contains 

no new control measure commitments, but relies on the adopted revisions 

to Rules 403 and 403.1 and the local ordinances.

 The second comment was from CARB (letter from Cynthia Marvin, dated 

August 29, 2005). CARB pointed out that Table 8 (``Proposed Approvals 
of South Coast and Coachella Valley PM-10 Attainment Plan Submittals'') 

contains a typographical error, in referencing contingency measure CTY04. We have corrected this error in Table 3 (``Approvals of South Coast 

and Coachella Valley PM-10 Attainment Plan Submittals'') in section III 

below, by indicating that the approved contingency measure is CTY-14.

 CARB also asked that we note that the 2003 South Coast AQMP 

description of contingency measures CTY-01--Accelerated Implementation 

of Control Measures, and TCB-01--Transportation Conformity Budget 

Backstop Measure incorrectly lists CARB as an implementing agency. We 

have added a new footnote 1 to Table 3 below, to indicate that these 

two contingency measures do not apply to CARB.

III. EPA Action

 In this document, we are finalizing the actions on the submittals 

referenced above. We are approving revisions to SCAQMD Rules 403 

(except for subdivision h), 403.1 (except for subdivision j), and 1186 

regulating fugitive dust emissions; revisions to the implementation 

handbooks for the rules (Rule 403 Implementation Handbook, Chapters 5, 

7, and 8; Rule 403 Coachella Valley Agricultural Handbook; Rule 403.1 

Implementation Handbook, Chapters 2, 3, 4, and 7); and revisions to the 

fugitive dust ordinances for 10 Coachella Valley jurisdictions. These 

revisions update, improve, strengthen, supplement, and replace the SIP 

provisions for control of PM-10 and PM-10 precursors in the two areas.

 We are approving the 2003 plan amendments to the 2002 SIPs for the 

South Coast and Coachella Valley serious nonattainment areas, as the 

plan amendments pertain to CAA provisions applicable to attainment SIPs 

for the 24-hour and annual PM-10 NAAQS. Specifically, we are approving 

under section 110(k)(3) the PM-10 portions of the 2003 South Coast AQMP 

and the 2003 Coachella Valley Plan with respect to the CAA requirements 

for emissions inventories under section 172(c)(3); control measures, as 

meeting the requirements of sections 110(a), 188(e), and 189(b)(1)(B); 

reasonable further progress under section 189(c)(1); contingency 

measures under section 172(c)(9); demonstration of attainment under 

section 189(b)(1)(A); and motor vehicle emissions budgets under section 

176(c)(2)(A).

 The South Coast and Coachella Valley budgets are displayed in our 

proposed approval as tables 6 and 7 respectively, at 70 FR 43672. We 

have previously determined that these budgets are adequate (see 69 FR 

15325, March 25, 2004), following posting of the budgets on EPA's 

conformity Web site: http://www.epa.gov/otaq/transp/conform/reg9sips.htm.
 We show the plan approvals in Table 3--``Approvals of South Coast 

and Coachella Valley PM-10 Attainment Plan Submittals.''

 Table 3.--Approvals of South Coast and Coachella Valley PM-10 Attainment Plan Submittals

----------------------------------------------------------------------------------------------------------------

 Plan Citation

 CAA Section Provision -------------------------------------------------

 South Coast Coachella Valley

----------------------------------------------------------------------------------------------------------------

172(c)(3)............................ Emission Inventories... 2003 South Coast AQMP, 2003 Coachella Valley

 Chapter 3 (Tables 3-1A Plan, Tables 2-2, 2-3,

 and 3-3A); Appendix 2-4, and 2-5.

 III (Tables A-1, A-2,

 A-3, A-5, and A-7);

 and Appendix V

 (Attachment 4).

110(a), 188(e), and 189(b)(1)(B)..... Control Measures....... Table 1 (derived from No new measures.

 2003 South Coast AQMP,

 Appendix IV-A) and

Table 2 (derived from

 2003 South Coast AQMP,

 Table 4-8A).

172(c)(2), 189(c)(1)................. Reasonable Further 2003 South Coast AQMP, Table 5 at 70 FR 43671

 Progress. Table 6-1. (derived from 2003

 Coachella Valley Plan,

Tables 2-9 and 2-7).

172(c)(9)............................ Contingency Measures... 2003 South Coast AQMP, No new measures.

 Appendix IV-A, Section

 2 (CTY-01, CTY-14, TCB-

 01)\1\.

189(b)(1)(A)......................... Attainment 2003 South Coast AQMP, 2003 Coachella Valley

 Demonstration. Chapter 5; Appendix V, Plan, Chapter 3.

 Chapter 2.

[[Page 69084]]

176(c)(2)(A)......................... Motor Vehicle Emissions Table 6 at 70 FR 43672 Table 7 at (derived 70

 Budgets. (derived from ``2003 FR 43672 from ``2003

 South Coast AQMP On- Coachella Valley PM-10

 Road Motor Vehicle SIP On-Road Motor

 Emissions Budgets''). Vehicle Emissions
 Budgets'').

----------------------------------------------------------------------------------------------------------------

\1\ The contingency measures do not contain a commitment by CARB.

IV. Administrative Requirements

 Under Executive Order 12866 (58 FR 51735, October 4, 1993), this 

action is not a ``significant regulatory action'' and therefore is not 

subject to review by the Office of Management and Budget. For this 

reason, this action is also not subject to Executive Order 13211, 

``Actions Concerning Regulations That Significantly Affect Energy

Supply, Distribution, or Use'' (66 FR 28355, May 22, 2001). This action 

merely approves state law as meeting Federal requirements and imposes 

no additional requirements beyond those imposed by state law. 

Accordingly, the Administrator certifies that this rule will not have a 

significant economic impact on a substantial number of small entities 

under the Regulatory Flexibility Act (5 U.S.C. 601 et seq.). Because 

this rule approves pre-existing requirements under state law and does 

not impose any additional enforceable duty beyond that required by 

state law, it does not contain any unfunded mandate or significantly or 

uniquely affect small governments, as described in the Unfunded 

Mandates Reform Act of 1995 (Pub. L. 104-4).

 This rule also does not have tribal implications because it will 

not have a substantial direct effect on one or more Indian tribes, on 

the relationship between the Federal Government and Indian tribes, or 

on the distribution of power and responsibilities between the Federal 

Government and Indian tribes, as specified by Executive Order 13175 

(59 FR 22951, November 9, 2000). This action also does not have Federalism 

implications because it does not have substantial direct effects on the 

States, on the relationship between the national government and the 

States, or on the distribution of power and responsibilities among the 

various levels of government, as specified in Executive Order 13132 

(64 FR 43255, August 10, 1999). This action merely approves a state rule 

implementing a Federal standard, and does not alter the relationship or 

the distribution of power and responsibilities established in the Clean 

Air Act. This rule also is not subject to Executive Order 13045 

``Protection of Children from Environmental Health Risks and Safety 

Risks'' (62 FR 19885, April 23, 1997), because it is not economically 

significant.

 In reviewing SIP submissions, EPA's role is to approve state 

choices, provided that they meet the criteria of the Clean Air Act. In 
this context, in the absence of a prior existing requirement for the 

State to use voluntary consensus standards (VCS), EPA has no authority 

to disapprove a SIP submission for failure to use VCS. It would thus be 

inconsistent with applicable law for EPA, when it reviews a SIP 

submission, to use VCS in place of a SIP submission that otherwise 

satisfies the provisions of the Clean Air Act. Thus, the requirements 

of section 12(d) of the National Technology Transfer and Advancement 

Act of 1995 (15 U.S.C. 272 note) do not apply. This rule does not 

impose an information collection burden under the provisions of the 

Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.).

List of Subjects in 40 CFR Part 52

 Environmental protection, Air pollution control, Intergovernmental 

relations, Nitrogen dioxide, Particulate matter, Reporting and 

recordkeeping requirements, Volatile organic compounds.

 Dated: September 16, 2005.

Laura Yoshii,

Acting Regional Administrator, Region IX.

? Part 52, chapter I, title 40 of the Code of Federal Regulations is 

amended as follows:

PART 52--[AMENDED]

? 1. The authority citation for part 52 continues to read as follows:

 Authority: 42 U.S.C. 7401 et seq.

Subpart F--California

? 2. Section 52.220 is amended by adding paragraphs (c)(333)(i)(A)(2), 

(c)(339), and (c)(340) to read as follows:

Sec. 52.220 Identification of plan.

* * * * *

 (c) * * *

 (333) * * *

 (i) * * *
 (A) * * *

 (2) Amended Rules 403 (except for subdivision h), 403.1 (except for 

subdivision j), and 1186, as adopted on April 2, 2004.

* * * * *

 (339) New and amended plans for the following agency were submitted 

on January 9, 2004, by the Governor's designee.

 (i) Incorporation by reference.

 (A) South Coast Air Quality Management District (SCAQMD).

 (1) South Coast 2003 Air Quality Management Plan (AQMP), as adopted 

by SCAQMD on August 1, 2003, and by California Air Resources Board on 

October 23, 2003.

 (i) Baseline and projected emissions inventories in AQMP Chapter 

III Tables 3-1A and 3-3A, in Appendix III Tables A-1, A-2, A-3, A-5, 

and A-7, and in Appendix V Attachment 4; SCAQMD commitment to adopt and 

implement control measures CMB-07, CMB-09, WST-01, WST-02, PRC-03, BCM07, BCM-08, MSC-04, MSC-06, TCB-01 in AQMP Chapter 4 Table 4-8A, and in 

Appendix IV-A); PM-10 reasonable further progress in AQMP Chapter 6, 

Table 6-1 and in Appendix V Chapter 2; contingency measures CTY-01, 

CTY-14, TCB-01 in Appendix IV-A Section 2; PM-10 attainment 

demonstration in AQMP Chapter 5, and in Appendix V Chapter 2; and motor 

vehicle emissions budgets in ``2003 South Coast AQMP On-Road Motor 

Vehicle Emissions Budgets.''

 (2) 2003 Coachella Valley PM-10 State Implementation Plan, as 

adopted by SCAQMD on August 1, 2003, and by California Air Resources 

Board on October 23, 2003.

 (i) Baseline and projected emissions inventories in Tables 2-2, 2-

3, 2-4, and 2-5; reasonable further progress in Tables 2-9 and 2-7; 

attainment demonstration in Chapter 3; and motor vehicle emissions 

budgets in ``2003 Coachella Valley PM-10 SIP On-Road Motor Vehicle 

Emissions Budgets.''

* * * * *

 (340) New and amended rules for the following agencies were 

submitted on November 16, 2004, by the Governor's designee.

[[Page 69085]]

 (i) Incorporation by reference.

 (A) South Coast Air Quality Management District (SCAQMD).

 (1) Amended Handbooks for Rules 403 (Chapters 5, 7, and 8) and 

403.1 (Chapters 2, 3, 4, and 7), as adopted on April 2, 2004.

 (B) Plan revisions for the Coachella Valley Planning Area.
 (1) Fugitive dust control ordinances for: City of Cathedral City 

Ordinance No. 583 (1/14/04), City of Coachella Ordinance No. 896 (10/8/

03), City of Desert Hot Springs Ordinance No. 2003-16 (10/7/03), City 

of Indian Wells Ordinance No. 545 (11/6/03), City of Indio Ordinance 

No. 1357 (12/3/03), City of La Quinta Ordinance No. 391 (12/2/03), City 

of Palm Desert Ordinance No. 1056 (11/13/03), City of Palm Springs 

Ordinance No. 1639 (11/5/03), City of Rancho Mirage Ordinances No. 855 

(12/18/03) and No. 863 (4/29/04), and County of Riverside Ordinance No. 

742.1 (1/13/04).

[FR Doc. 05-22463 Filed 11-10-05; 8:45 am]

BILLING CODE 6560-50