1

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Definition of important terms used in this document:

1) Designated “unclassifiable” – an area where EPA could not determine if there was a 

violation of the 2008 Lead National Ambient Air Quality Standard (NAAQS) or a contribution to 

a violation in a nearby area, because there was insufficient air quality data for both 2006-2008 

and 2007-2009 and where additional monitoring data for 2010 could not result in a different 

designation.

2) Designated “attainment” – an area which EPA has determined, based on the most recent 3 

years of certified air quality data from 2006-2008 or 2007-2009, has no violations of the 2008 

Lead NAAQS during 36 consecutive valid 3-month site means; and which EPA has further 

determined does not contribute to a violation of the 2008 Lead NAAQS in a nearby area and that 

additional monitoring data from 2010 could not result in a different designation.

3) Designated nonattainment area – an area which EPA has determined, based on a State 

recommendation and/or on the technical analysis included in this document, has a violation of 

the 2008 Lead NAAQS during the most recent three consecutive years of quality-assured, 

certified air quality data. 

4) Prior nonattainment area – an area that is currently designated as nonattainment or 

maintenance for the 1978 Lead Standard (including both current nonattainment areas and 

maintenance areas).

5) Recommended nonattainment area – an area a State or Tribe has recommended to EPA be 

designated as nonattainment.

6) Violating monitor – an ambient air monitor whose design value exceeds 0.15 micrograms per 

cubic meter (μg/m3). As described in Appendix R of part 50, a violation can be based on either 

Pb-TSP or Pb-PM10 data and only three months of data are necessary to produce a valid 

violating design value. 

7) 1978 Lead NAAQS – 1.5 μg/m3, National Ambient Air Quality Standard for lead

promulgated in 1978. Based on Pb-TSP indicator and averaged over a calendar quarter.

8) 2008 Lead NAAQS - 0.15 μg/m3, National Ambient Air Quality Standard for lead

promulgated in 2008. Based on Pb-TSP indicator and a three-month rolling average. Pb-PM10 

data may be used in limited instances, including to show nonattainment.
2

CALIFORNIA

Area Designations For the

2008 Lead National Ambient Air Quality Standards

The Environmental Protection Agency (EPA) has revised the level of the primary (health-based) 

National Ambient Air Quality Standard (NAAQS) for lead (Pb) from 1.5 micrograms per cubic 

meter (μg/m3) to 0.15 μg/m3 measured as total suspended particles (TSP). EPA has revised the 

secondary (welfare-based) standard to be identical in all respects to the primary standard.

Pursuant to section 107(d) of the Clean Air Act, EPA must designate as “nonattainment” those 

areas that violate the NAAQS and those nearby areas that contribute to violations. The table

below identifies the portion of counties in California (CA) that EPA intends to designate

“nonattainment” for the 2008 lead national ambient air quality standard (2008 Lead NAAQS). 

Table 1. Designation Recommendations

Area 

CA Recommended 

Nonattainment 

Counties

EPA’s Designated 

Nonattainment 

Counties

Nonattainment 

area for 1978

Lead NAAQS

Los Angeles County within the South Coast Air 

Basin, excluding San Clemente and Santa Catalina 

Islands (Southern Los Angeles County)

Los Angeles

(partial) 

Los Angeles (partial) na

Technical Analysis for Los Angeles County 

within the South Coast Air Basin, excluding San Clemente and Santa Catalina 

Islands (Southern Los Angeles County)

Introduction 

This technical analysis for Los Angeles County identifies the partial county area within the South 

Coast Air Basin (Southern Los Angeles County) with monitors that violate the 2008 Lead

NAAQS and evaluates nearby areas for contributions to ambient lead concentrations in the area. 

EPA has evaluated the surrounding area based on the weight of evidence of the following factors 

recommended in previous EPA guidance: 

Air quality in potentially included versus excluded areas;

Emissions and emissions-related data in areas potentially included versus excluded from 

the nonattainment area, including population data, growth rates and patterns and 

emissions controls;

Meteorology (weather/transport patterns);

Geography/topography (mountain ranges or other air basin boundaries);

Jurisdictional boundaries (e.g., counties, air districts, reservations, etc.); and

Any other relevant information submitted to or collected by EPA (e.g., modeling where 

done appropriately).
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4

In October 2009, California Air Resources Board (CARB) recommended that the Los Angeles 

County portion of the South Coast Air Basin be designated as nonattainment for the 2008 Lead

NAAQS based on air quality data from 2006-2008. CARB clarified its recommendation to be 

the Los Angeles County portion of the South Coast Air Basin, excluding San Clemente and 

Santa Catalina Islands, in May 2010.1 CARB’s recommendation was based on data from Federal 

Reference Method (FRM) or Federal Equivalent Method (FEM) monitors located in the state.

2

The Pb air monitors operated by South Coast Air Quality Management District (AQMD) are 

FEM monitors. South Coast AQMD analyzed the filters using a modified analysis FEM. As 

additional checks on the analysis method, EPA is reviewing results from filter strip audits and 

also having filters that contributed to the area’s design value analyzed by an independent lab 

following a different FEM. Based on EPA’s technical review of the methods, EPA expects to 

move forward with the nonattainment designation described in this document.

Based on EPA's technical analysis and currently available information, which is described 

below, EPA is intending to designate the Los Angeles County portion of the South Coast Air 

Basin, excluding San Clemente and Santa Catalina Islands (Southern Los Angeles County) as

nonattainment for the 2008 Lead NAAQS.

Air Quality Data 

This factor considers the lead design values (in μg/m3) for air quality monitors in Southern Los 

Angeles County and surrounding areas based on data from 2006-2008. A monitor’s design value 

indicates whether that monitor attains a specified air quality standard. The 2008 Lead NAAQS 

are met at a monitoring site when the identified design value is valid and less than or equal to 

0.15 μg/m3. A design value is only valid if minimum data completeness criteria are met. A lead

design value that meets the NAAQS is generally considered valid if it encompasses 36 

consecutive valid 3-month site means (specifically for a 3-year calendar period and the two 

previous months). For this purpose, a 3-month site mean is valid if valid data were obtained for 

at least 75 percent of the scheduled monitoring days in the 3-month period. For purposes of 

assessing data capture, data collected before January 1, 2009 will be treated with an assumed 

scheduled sampling frequency of every sixth day, as specified by 40 CFR part 50 Appendix R, 

section 4(c)(i). A lead design value that does not meet the NAAQS is considered valid if at least 

one 3-month mean that meets the same 75 percent requirement is above the NAAQS. That is, a 

site does not have to monitor for three full calendar years in order to have a valid violating 

design value; a site could monitor just three months and still produce a valid (violating) design 

value.

The 2008 Lead NAAQS design values for Southern Los Angeles County and surrounding areas

are shown in Table 2.

 

1 May 12, 2010 CARB Supplemental Information

2 October 2009 CARB Recommendation 
5

Table 2. Air Quality Data – Pb Monitors in Southern California 

County State 

Recommended 

Nonattainment?

Monitor Name Monitor Air 

Quality

System (AQS) 

ID

Monitor Location Lead Design

Value,

2006 - 2008

(μg/m3)

Los 

Angeles, CA

Yes (Partial 

County)

Exide – Vernon, 

Rehrig

06-037-1405-01 4010 E. 26th Street, 

Vernon

2.49

Exide – Vernon, 

Railyard

06-037-1406-01 Rail Road Yard, 

Washington Blvd, 

Commerce

0.552

Trojan 06-037-1403-01 9440 Ann St., Santa 

Fe Springs

0.181

Exide – Commerce

(formerly Quenell)

na

3

LA Paper Box, 61st St, 

City of Commerce

0.143

Quemetco 06-037-1404-01 500 S. 7th St, City of 

Industry

0.091

Los Angeles - Main 

St. 06-037-1103-02

1630 N. Main St, Los 

Angeles 0.03

Pico Rivera 06-037-1602-01

4144 San Gabriel 

River Pkwy, Pico 

Rivera 0.03

Lynwood 06-037-1301-01

11220 Long Beach 

Blvd, Lynwood 0.03

Long Beach (South) 06-037-4004-02

1305 E. Pacific Coast 

Hwy, Long Beach 0.02

Long Beach (North) 06-037-4002-02

3648 N. Long Beach 

Blvd, Long Beach 0.01

LAX - Westchester 

Pkwy 06-037-5005-01

7201 W. 

Westchester 

Parkway, Los Angeles 0.01

Riverside 

County, CA

No

Rubidoux 06-065-8001-03

5888 Mission Blvd, 

Rubidoux 0.02

Riverside 06-065-1003-02

7002 Magnolia Ave, 

Riverside 0.01

San 

Bernadino 

County, CA

No

San Bernadino 06-071-9004-01

24302 4th St, San 

Bernadino 0.02

Upland 06-071-1004-01

1350 San Bernadino 

Rd, Upland 0.02

Monitors in Bold have the highest 2006-2008 design value in the respective county.

Table includes monitors with at least one three-month average between 2006-2008. Monitors may not have a full 36 

months worth of valid data, 2006-2008.

1 Recent data are entered into AQS. Complete historic data are not available in AQS, however, the 06-08 design 

value as supplied in October 2009 CARB Recommendation, p E4-2, is included in the table as it is being used to 

inform these designations.

2 Recent data are entered into AQS. Complete historic data are not available in AQS, however, the 06-08 design 

value as supplied by South Coast AQMD is included in the table as it is being used to inform these designations.

3 Data for this monitor have not been entered into AQS. The 06-08 design value as supplied in October 2009 CARB 

Recommendation, p E4-2, is included in the table as it is being used to inform these designations.

Within Los Angeles County and nearby counties, ten non-source oriented sites have collected at 

least three consecutive months of Pb data between 2006-2008. The highest three-month average 

for any of these ten non-source oriented sites is 0.03 μg/m3. Higher three-month averages have 

been measured at five source-oriented sites. South Coast AQMD has collected at least three 

consecutive months of Pb data between 2006-2008 at sites near Exide Technologies in Vernon, 
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7

Three monitors in Los Angeles County show violations of the 2008 Lead NAAQS. Therefore 

some area in Los Angeles County and possibly additional areas in surrounding counties must be 

designated nonattainment. We evaluate nearby counties because for each monitor or group of 

monitors that exceed a standard, nonattainment boundaries must cover a large enough area to 

include not only the area judged to be violating the standard but also the source areas that are 

determined to be contributing to the violations. Each area has been evaluated based on the 

weight of evidence of eight factors and other relevant information. 

Emissions and Emissions-Related Data

Evidence of lead emissions sources surrounding a violating monitor are an important factor for 

determining whether a nearby area is contributing to a monitored violation. For this factor, EPA 

evaluated county level emission data for lead, population data, and emissions controls.

Emissions

Emissions data were derived from the 2005 National Emissions Inventory, version 2 (NEIv2), 

which is the most up-to-date version of the national inventory. See 

http://www.epa.gov/ttnchie1/net/2005inventory.html. EPA recognizes that for certain counties, 

emissions may have changed since 2005. For example, certain large sources of emissions in or 

near this area may have installed emission controls or otherwise significantly reduced emissions 

since 2005. EPA therefore also considered 2008 Toxics Release Inventory (TRI) information for 

California.4 In addition, South Coast AQMD provided some updated emissions information with 

their 2009 monitoring network plan.5 Table 3 reflects data from South Coast AQMD, the 2005 

NEI, and the 2008 TRI.

There are approximately 20,000 airport facilities in the U.S. at which leaded aviation gasoline is 

consumed. To evaluate the potential impact of emissions at and near these facilities, EPA 

recommends that States use the draft 2008 NEI. Airports in Los Angeles County and 

surrounding counties emitting over 0.10 tons per year of Pb according to the draft 2008 NEI are 

listed in Appendix A.

 

4 TRI available at http://www.epa.gov/triexplorer/

5

South Coast AQMD 2009 Pb Network Plan, p D-9.
8

Table 3. California Facilities with Pb Emissions > 0.10 tpy.*

County

Facility in State 

Recommended 

Nonattainment

Area? Facility Address City

Facility Total 

Air Releases 

(tpy)

Kern No CalPortland Co Mojave Plant 9350 Oak Creek Rd Mojave 0.22

Los Angeles Yes Exide Technologies 2700 S Indiana St Los Angeles 2.00

Los Angeles Yes 

BP West Coast Products LLC 

Carson 1801 Sepulveda Bl Carson 0.79

Los Angeles Yes Quemetco INC 720 S Seventh St City of Industry 0.32

Los Angeles Yes Tesoro Los Angeles Refinery

2101 E Pacific Coast 

Hwy Wilmington 0.15

Orange No Johnson Controls Battery Group 1550 Kimberly Ave Fullerton 0.45

San Bernadino No TAMCO 12459 Arrow Rte

Rancho 

Cucamonga 0.12

San Bernadino No

TXI Riverside Cement Oro 

Grande Plant

19409 National 

Trails Hwy Oro Grande 0.10

San Joaquin No

Owens-Brockway Glass 

Container Inc Plant #22 14700 W Schulte Rd Tracy 0.26

San Joaquin No Pilkington NA INC 500 E Louise Ave Lathrop 0.12

*Emissions reflect highest values from South Coast AQMD, 2008 TRI, and 2005 NEI version 2.

Figure 4 shows airports and point sources in the area near the violating monitors. 

As shown in Figure 4, there are a few airports in the northern Mojave Desert part of Los Angeles 

County, the closest located more than 40 miles from a violating monitor. There are no known Pb 

sources emitting 0.1 tons of lead per year (tpy) or more on Santa Catalina Island. There is one 

small airport on San Clemente estimated to emit 0.17 tpy according to the draft 2008 NEI. 

Geography and meteorology related to the northern Mojave Desert portion of Los Angeles 

County and the islands are discussed below.
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Environmental Protection Agency, Docket Center 

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10

Population Data, Growth Rates and Patterns

Table 4 shows the 2008 population for each county in the area being evaluated, as well as the 

population density and change for each county in that area. These data help assess the extent to 

which the concentration of human activities in the area and concentration of population-oriented 

commercial development may indicate emissions-based activity contributing to elevated ambient 

lead levels. This may include ambient lead contributions from activities that would disturb lead 

that has been deposited on the ground or on other surfaces. Re-entrainment of historically 

deposited lead is not reflected in the emissions inventory.

Table 4. Population Data

County State 

Recommended 

Nonattainment?

2008 

Population

2008

Population 

Density 

(pop/sq mi)

Population 

Change 

2000-2008

Population 

% Change 

2000-2008

Kern No 800,458 98 136,948 21

Los Angeles Yes (partial) 9,862,049 2,410 317,937 3

Orange No 3,010,759 3,761 153,841 5

Riverside No 2,100,516 288 541,239 35

San Bernardino No 2,015,355 100 296,680 17

Ventura No 797,740 429 41,326 5

Source of data:U.S. Census Bureau estimates for 2008 

(http://www.census.gov/popest/datasets.html) and estimation of the area of U.S. Counties

CARB’s March 2010 supplemental information highlights population, urbanization, and 

expected growth in the South Coast portion of Los Angeles County versus the Mojave Desert 

portion in northern Los Angeles County. 

Similar to air quality and emissions, there are vast differences between the population and 

degree of urbanization in the two portions of Los Angeles County. Based on estimates for 

2010, the highly urbanized South Coast portion of the County has a population of more 

than 10 million, compared with a population of 328,000 in the Mojave Desert portion. 

This means that nearly 97 percent of the County population lives in the South Coast 

portion, compared with only 3 percent in the Mojave Desert portion of the County. In 

terms of urbanization, the South Coast portion of Los Angeles County is part of the 

largest metropolitan area in California. In contrast, the Lancaster-Palmdale area is the 

only urbanized area in the Mojave Desert portion of the County. In terms of size, the 

South Coast portion of Los Angeles County is a little more than one and a half times 

larger than the Mojave Desert portion (2538 square miles versus 1522 square miles).

However, the population density is 3,992 people per square mile, compared with only 

216 people per square mile in the Mojave Desert portion. Over the last decade, the South 

Coast and Mojave Desert portions of Los Angeles County have realized similar growth 

rates, with population in both areas showing a seven percent increase from 2000 to 2005 

and a two percent increase from 2005 to 2010. These trends are expected to continue, 

thereby maintaining the significant differences in population between the two sub-county

areas.

6

 

6 March 8, 2010 CARB Supplemental Information, p 6.
11

CARB’s May 2010 supplemental information highlights population, urbanization, and expected 

growth in the South Coast mainland portion of Los Angeles County versus the two Channel 

Islands in Los Angeles County.

Based on estimates for 2010, the highly urbanized South Coast mainland portion of the 

County has a population of more than 10 million. The population of Santa Catalina Island 

is less than 5,000, while San Clemente Island, owned and operated by the United States 

Navy, is virtually uninhabited. This means that more than 99 percent of the population 

lives in the South Coast mainland portion of the County. In terms of size, the South Coast

mainland portion of Los Angeles County is close to 20 times larger than both islands 

combined. However, the population density is 3,992 people per square mile, compared 

with about 50 people per square mile on Santa Catalina. Given the limited size of Santa 

Catalina Island and the military function of San Clemente Island, this discrepancy in 

population between the mainland and island portions of South Coast Los Angeles County 

is not expected to change.7

The northern, Mojave Desert portion and the offshore, islands portion of Los Angeles County 

vary drastically from the South Coast, mainland portion in terms of population density and 

degree of urbanization. Differences in terms of geography and meteorology are discussed below.

EPA has considered the population growth rate for this area and does not believe that it affects 

the boundary recommendation. 

Emissions Controls

Under this factor, the existing level of control of emission sources is taken into consideration. 

The emissions data used by EPA in this technical analysis and provided in Table 3 and Appendix 

A represent emissions levels taking into account any control strategies implemented in Southern 

Los Angeles County on stationary sources prior to the relevant data collection. 

In September 1992, South Coast AQMD adopted Rule 1420 (Emissions Standard for Lead). 

Aimed at reducing lead emissions from stationary sources, the rule requires specific emissions 

controls for gas streams and fugitive lead-dust emissions, submittal of compliance plans, and 

monitoring by sources emitting more than 10 tons of lead per year.8 CARB’s submittal states 

that this rule has been very effective in reducing lead emissions.9

 

7 May 12, 2010 CARB Supplemental Information, p 3.

8

“Rule 1420. Emissions Standard for Lead,” South Coast Air Quality Management District, September 11, 1992.

9 March 8, 2010 CARB Supplemental Information, p 5.
12

Meteorology and Geography / Topography

The geography/topography analysis evaluates the physical features of the land that might have an 

effect on the air shed and, therefore, on the distribution of lead over Los Angeles County. Figure 

5 shows air basins in southern California. The State of California supplemental information 

supports including the South Coast Air Basin portion of Los Angeles County, and excluding the 

Mojave Desert portion of the county, based on the substantially different meteorological 

conditions in the South Coast Basin and Mojave Desert, and the presence of the mountain range 

which act as a barrier to airflow between the South Coast and Mojave Desert. 

Meteorological conditions in the South Coast and Mojave Desert portions of Los Angeles 

County are substantially different. The South Coast portion is bounded by the Pacific 

Ocean, which makes for a more temperate climate with cooler temperatures and a diurnal 

pattern of on-shore / off-shore air flow. Temperatures generally average in the 70s during 

the summertime and the 50s during the wintertime. Average annual precipitation is about 

15 inches per year. In contrast to the coastal area, the Mojave Desert portion of Los 

Angeles County is a high desert area with average temperatures in the 80s during summer 

and the 40s during the winter. This desert portion of the County receives half as much 

rainfall, averaging about 7 inches per year.

The South Coast portion of Los Angeles, where the major lead emissions sources are 

located, is surrounded by mountains which act as barriers to airflow between the South 

Coast and Mojave Desert.... Although there are a limited number of gaps in these 

mountains where transport has been documented, transport of lead emissions from the 

South Coast into the Mojave Desert is highly unlikely, given the weight of lead particles 

and the rapid decrease in concentration with distance from a source. As a result, 

emissions sources in the South Coast are not expected to have an impact on lead 

concentrations in the Mojave Desert portion of the County.10

 

10 March 8, 2010 CARB Supplemental Information, p 6.
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14

the Salton Sea Air Basin, as well as the Mojave Desert Air Basin. Concentrations of 

primary pollutants (those emitted directly into the air) are typically highest close to the 

sources which emit them. However, secondary pollutants (those formed in the air by 

chemical reaction of precursors) reach maximum concentrations some distance 

downwind of the sources that emit the precursors, due to the fact that the polluted air 

mass is moved inland many miles by the prevailing winds before maximum 

concentrations are reached.

12

CARB supplied additional justification for excluding the two Channel Islands from the 

nonattainment area. Santa Catalina and San Clemente Islands are part of Los Angeles County, 

and fall within the South Coast Air Basin. Approximately 20 miles and 50 miles from the 

southern border of Los Angeles County (see Figure 5), respectively, Santa Catalina and San 

Clemente are isolated areas surrounded by water. CARB’s explanation states, “Although an

onshore/offshore air flow regime impacts both areas, the distance between the mainland South 

Coast portion of the County and the islands offshore precludes any significant contribution to 

lead concentrations from the mainland to the islands.”

13

The wind direction frequencies for Los Angeles, shown below, indicate that the predominant 

wind direction is from the WNW for winter and from the WSW for spring, summer, and autumn. 

Although this indicates a potential for transport to the northeastern portion of the county, the air 

monitoring data (see Figure 2) indicate that the measured ambient air concentration values for 

lead decrease to below the standard relatively near the source, which is consistent with excluding 

the Mojave Desert Air Basin portion and the Channel Islands portion of Los Angeles County 

from the non-attainment area, and not extending the nonattainment boundary beyond Los 

Angeles County.

Figure 6: Average Wind Direction Frequencies in Los Angeles County, CA

Source: A three-dimensional bar chart shows the wind frequencies in eight directions for the four seasons. This data 

is taken from 1960-1992 Solar and Meteorological Surface Observation Network information issued jointly by the 

 

12 “Final 2007 AQMP Appendix II: Current Air Quality,” South Coast Air Quality Management District, June 2007. 

p II-2-1.

13 May 12, 2010 CARB Supplemental Information, p 3.
15

U.S. Department of Commerce: National Climatic Data Center and the U.S. Department of Energy: National 

Renewable Energy Laboratory. The chart frequencies reflect the directions from which the winds come.

Based on EPA’s technical analysis of the information provided by CARB, the South Coast 

AQMP, and the wind frequencies, EPA believes this information supports the Southern Los 

Angeles County as the appropriate boundary for the nonattainment area.

Jurisdictional boundaries 

Existing jurisdictional boundaries may be helpful in articulating a boundary for purposes of 

nonattainment designations, and for purposes of carrying out the governmental responsibilities of 

planning for attainment of the lead NAAQS and implementing control measures. These existing 

boundaries may include an existing nonattainment or maintenance area boundary, a county or 

township boundary, a metropolitan area boundary, an air management district, or an urban 

planning boundary established for coordinating business development or transportation activities.

As noted in CARB’s supplemental information submittal: 

...Los Angeles County is divided between two air basins. The southern two-thirds of the 

County is located in the South Coast Air Basin (South Coast) and falls under the 

jurisdiction of the South Coast Air Quality Management District (South Coast AQMD or 

District). The northern third of the County is located in the Mojave Desert Air Basin 

(Mojave Desert) and falls under the jurisdiction of the Antelope Valley Air Quality 

Management District... The jurisdictional differences, along with the disparity among 

emissions sources and other factors, justify limiting the lead nonattainment area to the 

South Coast portion of Los Angeles County.14

The jurisdictional split described above is illustrated in Figures 7 and 8. The intended 

nonattainment area lies entirely within the portion of Los Angeles County that is solely under the 

jurisdiction of the South Coast AQMD. No tribal lands are located within or adjacent to the 

recommended nonattainment area. The District will be responsible for developing the Pb state 

implementation plan and required control strategies. 

 

14 March 8, 2010 CARB Supplemental Information, p 1.
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17

Other Relevant Information

Additional information may be found in CARB’s October 2009, March 2010, and May 2010

submittals.

Conclusion

After considering the factors described above, EPA believes it is appropriate for the partial

county listed in Table 1 to comprise the Southern Los Angeles County 2008 Lead NAAQS 

nonattainment area. 

Three air quality monitors in Southern Los Angeles County show violations of the 2008 Lead 

NAAQS, based on 2006-2008 air quality data. All three monitors are located near sources. The 

ring of non-source oriented monitors surrounding the three violating monitors show 

concentrations well below the standard. Additionally, the South Coast and Mojave Desert 

portions of Los Angeles County are separated by a mountain range, and differ in population, 

degree of urbanization, number of sources, meteorology and topography. The mainland South 

Coast and offshore islands portions of Los Angeles County are separated by twenty miles or 

more of water, and differ vastly in population, urbanization, and number of sources. The 

southern mainland portion of Los Angeles County contains the violating monitors, the majority 

of the county’s Pb sources, the majority of the population, and falls under one air quality 

management district’s purview. Based on its consideration of all the relevant, available 

information, as described above, EPA believes that the boundaries described herein encompass 

the entire area that does not meet (or that contributes to ambient air quality in a nearby area that 

does not meet) the 2008 lead NAAQS. 
18

Citations

October 2009 CARB Recommendation Letter from James N. Goldstene, Air Resources 

Board, to Laura Yoshii, U.S. Environmental Protection Agency Region 9, October 14, 2009 

transmitting recommendations for the 2008 Pb NAAQS, with enclosures.

March 8, 2010 CARB Supplemental Information “State of California Supplemental 

Information for Recommended Lead Nonattainment Area, South Coast Air Basin Portion of Los 

Angeles County: Eight Factor Analysis,” California Air Resources Board, March 8, 2010.

May 12, 2010 CARB Supplemental Information “State of California Supplemental 

Information for Recommended Lead Nonattainment Area, South Coast Air Basin Portion of Los 

Angeles County Excluding the Channel Islands: Eight Factor Analysis,” California Air 

Resources Board, May 12, 2010.

South Coast AQMD 2009 Pb Network Plan “Appendix D: South Coast Air Quality 

Management District Lead (Pb) Monitoring Network Plan,” South Coast Air Quality 

Management District, July 2009.
19

Appendix A

Los Angeles County and Neighboring Counties: Airports Emitting 0.1 tons per year of Pb or 

more, according to the Draft 2008 National Emissions Inventory
20

Appendix A. Los Angeles County and Neighboring Counties: Airports Emitting > 0.10 tpy Pb according to 

the draft 2008 NEI.

County

Airport in State 

Recommended 

Nonattainment

Area? Facility Type City

Facility Total 

Air Releases 

(tpy)

Kern No MEADOWS FIELD AIRPORT BAKERSFIELD 0.34

Kern No MOUNTAIN VALLEY AIRPORT TEHACHAPI 0.14

Kern No SHAFTER-MINTER FIELD AIRPORT SHAFTER 0.13

Kern No CALIFORNIA CITY MUNI AIRPORT CALIFORNIA CITY 0.10

Kern No INYOKERN AIRPORT INYOKERN 0.10

Los Angeles Yes 

LONG BEACH /DAUGHERTY 

FIELD/ AIRPORT LONG BEACH 1.07

Los Angeles Yes VAN NUYS AIRPORT VAN NUYS 0.91

Los Angeles Yes ZAMPERINI FIELD AIRPORT TORRANCE 0.59

Los Angeles Yes LOS ANGELES INTL AIRPORT LOS ANGELES 0.54

Los Angeles No GRAY BUTTE FIELD AIRPORT PALMDALE 0.49

Los Angeles Yes SANTA MONICA MUNI AIRPORT SANTA MONICA 0.34

Los Angeles Yes BRACKETT FIELD AIRPORT LA VERNE 0.33

Los Angeles Yes EL MONTE AIRPORT EL MONTE 0.24

Los Angeles Yes WHITEMAN AIRPORT LOS ANGELES 0.20

Los Angeles Yes COMPTON/WOODLEY AIRPORT COMPTON 0.18

Los Angeles Yes BOB HOPE AIRPORT BURBANK 0.17

Los Angeles No SAN CLEMENTE ISLAND NALF AIRPORT SAN CLEMENTE ISLAND 0.17

Los Angeles No GENERAL WM J FOX AIRFIELD AIRPORT LANCASTER 0.16

Los Angeles Yes 

JACK NORTHROP 

FIELD/HAWTHORNE MUNI AIRPORT HAWTHORNE 0.16

Los Angeles No BOHUNK'S AIRPARK AIRPORT LANCASTER 0.13

Los Angeles No

LITTLE BUTTES ANTIQUE 

AIRFIELD AIRPORT LANCASTER 0.12

Los Angeles Yes QUAIL LAKE SKY PARK AIRPORT GORMAN/LANCASTER 0.11

Los Angeles Yes GOODYEAR BLIMP BASE AIRPORT CARSON 0.11

Los Angeles No NICHOLS FARMS AIRPORT PALMDALE 0.11

Orange No

JOHN WAYNE AIRPORTORANGE COUNTY AIRPORT SANTA ANA 0.79

Orange No FULLERTON MUNI AIRPORT FULLERTON 0.19

Orange No MC CONVILLE AIRSTRIP AIRPORT LAKE ELSINORE 0.17

Orange No LOS ALAMITOS AAF AIRPORT LOS ALAMITOS 0.17

Riverside No FRENCH VALLEY AIRPORT MURRIETA/TEMECULA 0.27

Riverside No JACQUELINE COCHRAN RGNL AIRPORT PALM SPRINGS 0.21

Riverside No HEMET-RYAN AIRPORT HEMET 0.21

Riverside No RIVERSIDE MUNI AIRPORT RIVERSIDE 0.21

Riverside No CORONA MUNI AIRPORT CORONA 0.19

Riverside No PALM SPRINGS INTL AIRPORT PALM SPRINGS 0.17

Riverside No BERMUDA DUNES AIRPORT PALM SPRINGS 0.11
21

Riverside No FLABOB AIRPORT RIVERSIDE/RUBIDOUX/ 0.11

Riverside No

JULIAN HINDS PUMP PLANT 

AIRSTRIP AIRPORT DESERT CENTER 0.11

Riverside No MARCH ARB AIRPORT RIVERSIDE 0.11

Riverside No LAKE MATHEWS AIRPORT RIVERSIDE 0.11

Riverside No BILLY JOE AIRPORT TEMECULA 0.11

Riverside No PERRIS VALLEY AIRPORT PERRIS 0.10

San Bernardino No CHINO AIRPORT CHINO 0.38

San Bernardino No CABLE AIRPORT UPLAND 0.26

San Bernardino No ONTARIO INTL AIRPORT ONTARIO 0.15

San Bernardino No

SOUTHERN CALIFORNIA 

LOGISTICS AIRPORT VICTORVILLE 0.13

San Bernardino No REDLANDS MUNI AIRPORT REDLANDS 0.12

San Bernardino No GOLDSTONE /GTS/ AIRPORT BARSTOW 0.12

San Bernardino No CADIZ AIRSTRIP AIRPORT CADIZ 0.12

San Bernardino No DANBY AIRSTRIP AIRPORT DANBY 0.12

San Bernardino No

IRON MOUNTAIN PUMPING 

PLANT AIRPORT DESERT CENTER 0.12

San Bernardino No BICYCLE LAKE AAF AIRPORT FORT IRWIN/BARSTOW 0.12

San Bernardino No CAMINO AIRSTRIP AIRPORT GOFFS 0.12

San Bernardino No PALISADES RANCH AIRPORT HELENDALE 0.12

San Bernardino No HART MINE AIRPORT IVANPAH 0.12

San Bernardino No RABBIT RANCH AIRPORT LUCERNE 0.12

San Bernardino No CONES FIELD AIRPORT TWENTYNINE PALMS 0.12

San Bernardino No TWENTYNINE PALMS (SELF) AIRPORT TWENTYNINE PALMS 0.12

San Bernardino No B & E RANCH AIRPORT YUCCA VALLEY 0.12

San Bernardino No APPLE VALLEY AIRPORT APPLE VALLEY 0.10

Ventura No CAMARILLO AIRPORT CAMARILLO 0.42

Ventura No SANTA PAULA AIRPORT SANTA PAULA 0.27

Ventura No OXNARD AIRPORT OXNARD 0.25