SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT 

SOUTH COAST AIR QUALITY MANGEMENT DISTRICT 

ANNUAL AIR QUALITY MONITORING 

NETWORK PLAN 

JULY 2009 

Prepared by 

Rene M. Bermudez 

Principal Air Quality Instrument Specialist 

Philip M. Fine 

Atmospheric Measurements Manager 
Air Quality Monitoring Network Plan – July 2009 

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Table of Contents

 

Page

Introduction 1 

Public Comments 1 

Network Design 1 

Special Programs 6 

Recent or Proposed Modifications to Network 8 

Minimum Monitoring Requirements 13 

Appendix A: Network Depiction Maps 

• Ozone Monitoring Locations A-1 

• PM10 Monitoring Locations A-2 

• Nitrogen Dioxide Monitoring Locations A-3 

• Carbon Monoxide Monitoring Locations A-4 

• Sulfur Dioxide Monitoring Locations A-5 

• Source and Ambient Lead Monitoring Locations A-6 

• PAMS Monitoring Locations A-7 

• PM2.5 Monitoring Locations A-8 

Appendix B: Detailed Site Information 

Appendix C: NCore Monitoring Network Plan 

Appendix D: Lead Monitoring Network Plan 

B-1 

C-1 

D-1 
Air Quality Monitoring Network Plan – July 2009 

1 

Introduction 

An annual review of the Air Quality Monitoring Network is required by Federal Regulations as a 

means to identify and report needs for additions, relocations, or terminations of monitoring sites 

or instrumentation. This report describes the network of ambient air quality monitors in the 

jurisdiction of and operated by the South Coast Air Quality Management District. It includes a 

review of actions taken during the 2008-2009 fiscal year, and plans for action in the year ahead. 

This draft plan addresses the requirements for an annual network plan as listed in Title 40, Part 

58, Section 10 of the Code of Federal Regulations (40 CFR 58.10). The regulations require that 

the report be submitted to the U.S. Environmental Protection Agency (EPA) by July 1 of each 

year. 

The South Coast Air Quality Management District staff, along with the California Air Resources 

Board (CARB), conducted an extensive review of the air monitoring sites in the South Coast Air 

Basin (Basin) in late 1980. National (NAMS) or State and Local (SLAMS) designations, 

monitoring objectives, and spatial scales of representativeness were assigned to the criteria 

pollutants monitored by site. Since that time, EPA Region IX staff and CARB staff visited all 

sites to confirm compliance with applicable siting criteria and related requirements. The most 

recent site visits occurred in 2000 to evaluate the PM2.5 monitoring network. Each year, South 

Coast Air Quality Management District staff conducts an annual review of its air monitoring 

network, and submits it to U.S. EPA. The review process focuses on current and future network 

air monitoring strategies, and all network changes are made in consultation with U.S. EPA and 

CARB. When re-locations are required, site reports are updated in U.S. EPA’s Air Quality 

System (AQS) to document compliance with established siting criteria for the new locations. 

Public Comments 

Pursuant to Federal regulations, this draft plan is to be made available for public inspection and 

comments for at least 30 days prior to submission to U.S. EPA. Hard copies of this document 

were made available on June 1, 2009 at the South Coast Air Quality Management District Public 

Information Desk in Diamond Bar, CA. The document was also posted to the public South 

Coast Air Quality Management District website at www.aqmd.gov on June 1, 2009, with links 

under the South Coast Air Quality Management District home page titled “Current Programs, 

Events and Topics.” Links to the document were also provided in the “Air Quality” area of the 

website. The draft document will also be made available to U.S. EPA during this period for 

review. 

Network Design 

The South Coast Air Quality Management District operates 35 permanent air monitoring sites in 

the South Coast Air Basin and a portion of the Salton Sea Air Basin in Coachella Valley. This 

area includes Orange County and the non-desert portions of Los Angeles, Riverside and San 

Bernardino Counties. The newest permanent site was added in 2008 at Compton to replace the 

Lynwood air monitoring location. Table 1 provides a list of monitoring locations, the U.S. EPA 

AQS site codes, and the pollutants measured at each site. Table 2 provides monitoring objective 

and the spatial scale for each monitor at each site. 

Table 3 describes the monitoring purpose for each monitor at each site. Table 4 describes the 

monitoring objective, purpose, and spatial scale for continuous particulate analyzers at each site. 
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A new requirement of the annual network plan implemented in 2007, the monitoring purpose is 

the reason why a certain pollutant is being measured at a certain site. A list and description of 

monitoring purposes is provided below, and portions are adapted from the CARB annual 

network plan for 2007. 

Background Level monitoring is use to determine general background levels of air 

pollutants as they enter the South Coast Air Basin.

High Concentration monitoring is conducted at sites to determine the highest concentration 

of an air pollutant in an area within the monitoring network. A monitoring network may 

have multiple high concentration sites (i.e., due to varying meteorology year to year). 

Pollutant Transport is the movement of pollutant between air basins or areas within an air 

basin. Transport monitoring is use to assess and mitigate upwind areas when transported 

pollutant affects neighboring downwind areas. Also, transport monitoring is use to 

determine the extent of regional pollutant transport among populated areas and to rural 

areas. 

Population Exposure monitoring is conducted to represent the air pollutant concentrations 

a populated area is exposed to. 

Representative Concentration monitoring is conducted to represent the air quality 

concentrations for a pollutant expected to be similar throughout a geographical area. These 

sites do not necessarily indicate the highest concentrations in the area for a particular 

pollutant. 

Source Impact monitoring is used to determine the impact of significant sources or source 

categories of air quality emissions on ambient air quality. The air pollutant sources may 

be stationary or mobile. 

Trend Analysis monitoring is useful for comparing and analyzing air pollution 

concentrations over time. Usually, trend analyses show the progress or lack of progress in 

improving air quality for an area over a period of many years. 

Site Comparison monitoring is used to assess the effect on measured pollutant levels of 

moving a monitoring location a short distance (usually less than two miles). Some 

monitoring stations become no longer usable due to development, change of lease terms, or 

eviction. In these cases, attempts are made to conduct concurrent monitoring at the old and 

new site for a period of at least one year in order to compare pollutant concentrations. 

Real Time Reporting/Modeling is used to provide data to EPA’s AIRNOW system which 

reports conditions for air pollutants on a real time basis to the general public. Data is also 

used to provide accurate and timely air quality forecast guidance to residents of the South 

Coast basin. 
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Multiple purposes for measuring a pollutant at a particular site are possible. There is some 

overlap between monitoring objectives as defined by EPA and given in Table 2, and the 

monitoring purposes provided in Table 3. 

A brief description of the network for each criteria pollutant monitored is provided below: 

OZONE 

The SCAQMD operates 30 sites where ozone measurements are made as part of the Air 

Monitoring Network. Figure 1 in Appendix A shows the spatial distribution of these sites. 

PM10 

Size-selective inlet high volume samplers are operated at 22 sites to meet the requirements 

for PM10 FRM sampling; at 12 of the sampling sites, PM10 continuous analyzers are also 

operated. These real-time devices are capable of making hourly particulate concentration 

measurements. Figure 2 in Appendix A shows the spatial distribution of the sampling 

sites. Real-time monitors, for the most part, are clustered in the high concentration areas, 

with two located in the desert area where wind-blown crustal material has caused 

exceedences of the 24-hour Standard. In downwind areas of the South Coast Air Basin, a 

large fraction of particulate is formed in the atmosphere. PM10 reaches maximum levels 

during late summer through early winter months. All PM10 FRM monitors operate on a 

one day in six schedule with the exception of Indio and Rubidoux which operate on one 

day in three schedule. 

NITROGEN DIOXIDE 

The nitrogen dioxide (NO2) network consists of 26 sites. These sites are mostly located in 

areas of highest NO2 concentration. The spatial distribution of NO2 monitors is shown in 

Figure 3 in Appendix A. Review of 1992 through 2007 data indicates that the Federal 

annual average standard was not exceeded. 

CARBON MONOXIDE 

Ambient carbon monoxide (CO) monitors measure concentrations at 26 locations. Figure 

4, Appendix A, shows the spatial distribution of these sites. Carbon monoxide emissions, 

primarily from motor vehicles, show a pattern congruent with major freeway arteries. 

SULFUR DIOXIDE 

Sulfur dioxide (SO2) monitors are located at 7 sites. Figure 5 in appendix A shows the 

spatial distribution of the sites. Most SO2 emissions come from federal transportation 

sources such as marine vessels. The monitors are clustered mostly in the areas where these 

sources are located. The federal standard has not been exceeded for nearly 30 years. 

PARTICULATE LEAD 

Total suspected particulate lead measurements are collected at 12 sites as part of the 

network. The spatial distribution of these sites is shown in Figure 6 in Appendix A. With 

the phasing out of lead in gasoline, ambient lead levels decreased to the point that a 

reduction in the network was made—reducing the number of sites from 27 to ten. 
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In 1990, U.S. EPA requested that the South Coast Air Quality Management District collect 

ambient air particulate lead samples near several large lead handling (battery recycling) 

facilities. Long-term source impacted monitoring began in 1991. A facility in the City of 

Industry exceeded the federal ambient particulate lead standard during the second quarter 

of Fiscal Year 1991-92. Lead monitoring at a facility in the City of Torrance ended in 

1993 when measurements were consistently below the ambient standard. Sampling ended 

at a facility in the City of Commerce in 2006 when the business was closed. Out of the 

two facilities currently being monitored, the facility in the City of Vernon exceeded the old 

federal ambient particulate lead standard (1.5 ug/m3 quarterly) during the first quarter of 

2008; the other facility was found to remain below this level. These source-related lead 

sites are also depicted in Figure 6. Changes to the Lead sampling network in response to 

the new Lead NAAQS and monitoring requirements (October 2008) are described later in 

this report. 

PAMS Network Plan 

The PAMS (Photochemical Assessment Monitoring Stations) network was initiated in 

June 1994 at Pico Rivera and Upland, and in 1995 at Banning and Azusa, to determine 

speciated hydrocarbon ozone-precursor compounds in ambient air. PAMS monitoring at 

Hawthorne commenced in June 1997, and the Burbank station became a PAMS site in July 

1997. In May 2001, the Santa Clarita location was established as a PAMS site. In April 

2004, the Hawthorne site was replaced by LAX Hastings, due to the end of a property 

lease. In August 2005, the Pico Rivera station moved to a new location one half mile south 

of the previous site, also due to the end of the property lease. Figure 7 in Appendix A 

shows the distribution of the PAMS network. 

An automated gas chromatography flame ionization detector (GC\FID) VOC system is in 

operation at the Pico Rivera air monitoring station with a VOC canister and carbonyl 

sampling. During the intensive sampling season from July 1, until September 30, GC\FID 

is run continuously; twenty-four hour VOC canisters are run every 6th day, and carbonyl 

samples are run continuously every three hours with one additional twenty-four hour 

sample run every 6th day. During the non-intensive season from October 1, through June 

30, twenty-four hour VOC canister samples are run every 6th day and twenty-four hour 

carbonyl samples are run every 6th day. Pico Rivera is a collocated site for VOC canister 

and carbonyl sampling. 

A similar automated gas chromatography flame ionization detector GC\FID VOC system 

was installed at the Burbank air monitoring station in July 1997. During the intensive 

sampling season from July 1, until September 30, GC\FID is run continuously; twenty-four 

hour VOC canisters are run every 6th day, and carbonyl samples are run continuously every 

three hours with one additional twenty four hour sample run every 6th day. During the 

non-intensive season from October 1, through June 30, twenty-four hour VOC canister 

samples are run every 6th day and twenty four hour carbonyl samples are run every 6th day. 

Manual VOC canister and carbonyl systems are in operation at Banning and Santa Clarita 

air monitoring stations. During the intensive season from July 1, until September 30, VOC 

canisters are run every three hours for a period of twenty-four hours every 3rd day and a 
Air Quality Monitoring Network Plan – July 2009 

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twenty-four hour sample is run every 6th day. Carbonyl samples are run every three hours 

for a period of twenty-four hours every third day and a twenty-four hour sample is run 

every 6th day. During the non-intensive season from October 1, through June 30, twentyfour hour VOC canister samples are run every 6th day and twenty-four hour carbonyl 

samples are run every 6th day. 

 

Manual VOC canister systems are in operation at Azusa, LAX Hastings, and Azusa air 

monitoring stations. During the intensive season from July 1 until September 30, VOC 

canisters are run every three hours for a period of twenty-four hours every 3rd day and a 

twenty-four hour sample is run every 6th day. During the non-intensive season from 

October 1 though June 30, twenty-four hour VOC canister samples are run every 6th day 

The first South Coast Air Quality Management District upper air monitoring station was 

established at Los Angeles International Airport (LAX) in 1994. Subsequent upper air 

stations include Ontario International Airport (ONT), installed in 1996, Moreno Valley 

(MOV) installed in 2001 at the Moreno Valley Municipal Water Treatment Plant in 

Riverside County, Irvine installed at the University of California Research and Extension 

Center in 2006, and Pacoima at Whiteman Airport during May 2007. The upper air 

stations use a combination of remote sensing and surface meteorological instrumentation, 

including the Vaisala (formerly Radian/URS) LAP-3000 radar wind profiler with a Radio 

Acoustic Sounding System (RASS), the Atmospheric Systems Corporation (formerly 

AeroVironment Inc.) mini Sodar acoustic wind profiler, and tower-mounted 

meteorological measurements of wind, pressure, temperature, relative humidity, solar 

radiation and ultraviolet radiation. 

In FY 2009-10 South Coast AQMD plans to make adjustments to the PAMS monitoring 

network based on recent EPA changes to PAMS monitoring requirements in 40 CFR part 

58. Details of proposed changes are included in the section titled, “Recent or Proposed 

Changes to Network.” 

PM2.5 

A network of 17 Federal Reference Method (FRM) samplers was first implemented in 

January 1999. On December 26, 1999, a second Coachella Valley PM2.5 sampling site 

was established in Palm Springs. On June 20, 2003, PM2.5 sampling began at the South 

Long Beach site. The final addition to the PM2.5 FRM network occurred in October 2005, 

at the new Mira Loma site. This brings the total number of PM2.5 FRM sampling sites to 

20. The sites are depicted in Figure 8, Appendix A and the actual starting date of each 

sampler is listed in Table 5. Collocated sampler sites are at Rubidoux, Central Los 

Angeles, and Indio. All sites in the Network using FRM samplers are suitable for 

comparison against the annual PM2.5 National Ambient Air Quality Standard (NAAQS). 

Continuous PM2.5 Met One Beta Attenuation Monitors (BAMs) were first deployed in 

Fiscal Year 2001–02. Thirteen monitors are now operating in the Basin, two at Rubidoux 

(collocated), and one each at Anaheim, Los Angeles, South Long Beach, Burbank, Mira 

Loma (Van Buren), and Banning. In January 2006, two additional samplers were added at 

Lake Elsinore and Glendora as part of the Children’s Health Study. As proposed in the 
Air Quality Monitoring Network Plan – July 2009 

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2008 network plan, FEM BAM monitors were deployed during October 2008, at the 

Anaheim, Burbank, Long Beach (North), Los Angeles (Main), Mira Loma (Van Buren), 

Rubidoux, and Long Beach (South) sites. All FEM BAMs continue to maintain the 

Special Purpose Monitor designation under 40 CFR 58.20 until sufficient data are collected 

for comparison to collocated FRMs. Non-FEM monitors that became available were 

moved to the Reseda and Santa Clarita sites. In the coming year South Coast Air Quality 

Management District will deploy additional non-FEM BAM samplers to enhance wildfire 

response capabilities and the Children’s Health study both described in the section titled, 

“Proposed Modifications to Network.” 

 

PM2.5 speciation sampling is also a part of the South Coast Air Quality Management 

District PM2.5 program. Two Speciation Trends Network (STN) and one South Coast Air 

Quality Management District Met One SASS PM2.5 samplers were deployed in March 

2001 at Rubidoux. One more STN and two SCAQMD SASS samplers were deployed at 

Central Los Angeles in 2002. In 2003, SASS PM2.5 speciation samplers were installed at 

Fontana and Anaheim air monitoring sites. In 2004, a sampler was installed at Long Beach 

as part of the MATES III project, and continues to run as part of the Port Area Monitoring 

Program and the 2009 Air Quality Management Plan (AQMP) Speciation Study (see 

below). In January 2009, two additional South Coast Air Quality Management District 

SASS speciation samplers were installed at Burbank and Upland air monitoring sites, also 

for the 2009 AQMDP Speciation Study. Analysis of the filters from the ambient network 

SASS samplers is being conducted at South Coast Air Quality Management District’s 

laboratory. The STN filters are shipped to RTI for analysis. This approach has the 

concurrence of CARB and U.S. EPA, Region IX. 

National Ambient Toxics Trends Sites (NATTS) 

The National Air Toxics Trends Sites (NATTS) program was developed to fulfill the need 

for long-term hazardous air pollutants (HAPs) monitoring data of consistent quality 

nationwide. South Coast Air Quality Management District has conducted several air toxics 

measurement campaigns in the past which demonstrated the variety and spatial distribution 

of air toxics sources across the South Coast Air Basin. A single air toxics measurement 

site can not reflect the levels and trends of air toxics throughout the South Coast Air Basin; 

because of this, two NATTS sites are used to characterize the South Coast Basin’s air 

toxics levels. The first site is a central urban core site in central Los Angeles that reflects 

concentrations and trends due primary to urban mobile source emissions. A second, more 

rural, inland site at Rubidoux captures the transport of pollutants from a variety of upwind 

mobile and industrial sources in the most populated areas of the air basin. NATTS 

monitoring began in February 2007 and continues at the Central Los Angeles and 

Rubidoux air monitoring sites. 

Special Programs 

Special monitoring programs are conducted for rule compliance purposes or to characterize the 

levels of toxic air contaminants and other criteria pollutants in sub-regional areas or communities 

in the Basin, or to support modeling and planning efforts. The following is a list of special 

monitoring programs that were active during the past year. Note that this is being provided for 
Air Quality Monitoring Network Plan – July 2009 

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informational purposes only. At this time, none of the Special Monitoring Programs are 

designated as a “Special Purpose Monitor” under 40 CFR 58.20. 

Multiple Air Toxics Exposure Study (MATES-III) 

MATES is the most comprehensive urban air quality study to date. In April 2004, the 

South Coast Air Quality Management District initiated the third round of MATES 

(MATES-III) to assess the ambient levels of airborne compounds linked to adverse health 

effects in humans. The previous study, MATES-II, was a year-long intensive sampling 

program. During the study, air toxics were monitored at ten fixed sites and additional 

short-term “micro-scale” monitoring was conducted at 14 sites using five mobile sampling 

platforms. Fixed sites were established to assess regional air toxics, while micro-scale 

sites assess source impacts on a more local level, such as an area of heavy industrial 

activity in close proximity to a residential area. MATES-III incorporated elements of the 

two prior studies to establish trend assessments with similar sampling methodologies. 

Enhancements to the sampling network with the latest air monitoring technologies and 

more frequent sampling schedules were also incorporated. Instrumentation at each site 

measured PM10, speciated PM2.5, VOCs, and air toxics such as heavy metals, hexavalent 

chromium, and carbonyls. 

The 2004-05 winter season in Southern California produced record levels of rainfall in 

most areas of the South Coast Air Basin. As expected, this lead to lower than expected 

levels of airborne constituents including PM concentrations. As a result, MATES-III was 

extended an additional year to collect more representative air toxics data. Sampling at the 

fixed sites was completed in April 2006. Micro-scale sampling has been completed at the 

Indio, San Bernardino, Commerce, La Puente, Santa Ana, and Sun Valley sites. The final 

micro-scale site is located adjacent to Long Beach Airport and was completed in October 

2006. A draft report for the MATES-III study was made available for public review and 

the final draft was published in September 2008. 

Fugitive Dust Study 

In support of South Coast Air Quality Management District Rule 403 - Fugitive Dust, SSI 

PM10 samplers are deployed on an episodic basis upwind and downwind of potential 

sources as required under Rule 403. Since 2003, periodic sampling has been conducted 

around gravel quarries and other industries which seem to be producing large volumes of 

dust. This sampling will continue through 2009 and 2010. A special instrument 

evaluation study was also initiated to assess alternative monitoring methodologies for Rule 

403 compliance testing. 

Hexavalent Chrome 

The South Coast Air Quality Management District has an ongoing program of collecting 

ambient hexavalent chromium in the vicinity of several chrome plating and cement 

production facilities located throughout the basin. Monitoring continues at Newport 

Beach, Riverside, and other locations throughout the South Coast Air Quality Management 

District jurisdiction. 
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Port Area Monitoring Program 

The South Coast Air Quality Management District is conducting an intensive air 

monitoring program in the communities adjacent to the Ports of Los Angeles and Long 

Beach. Monitoring consists of all gaseous criteria pollutants, air toxics compounds as 

measured in MATES-III, as well as continuous PM2.5 and PM2.5 speciation. Sampling 

began at four sites in February 2007. Two more sites began operation in June 2007 and an 

additional site was added during November, 2007. Sampling was completed in January 

2009, and data quality assessment and analysis is ongoing. Monitoring activities are being 

coordinated with the two Ports’ air monitoring programs as well as several CARB 

Research studies in the area. 

2009 Air Quality Management Plan Speciation Study (AQMP)

Every three years, or as required by federal regulation, the South Coast AQMD prepares an 

Air Quality Management Plan (AQMP) outlining planned measures to bring the South 

Coast into attainment with federal and state ambient air quality standards. Once complete, 

the AQMP is submitted to the California Air Resources Board (CARB) for inclusion in the 

state implementation plan (SIP). The next plan is scheduled for completion in late 2010 

and will address the 24-hour PM2.5 NAAQS. In support of the 2010 AQMP analysis and 

modeling efforts, an enhanced speciation network was deployed for calendar year 2009. 

PM2.5 SASS samplers were installed at Burbank and Upland on January 1st, 2009. The 

Long Beach (North) SASS sampler originally installed in 2004 as part of the MATES-III 

program and then the Port Area Monitoring Program continues to run in support of the 

AQMP. During calendar year 2009, the South Coast AQMD PM2.5 SASS network (seven 

sites) continues to collect samples on a 1-in-3 day basis. 

Recent or Proposed Modifications to Network 

Temecula AMS 

During October 2007, Southern California experienced some of the most severe wildfires 

in recent history. To measure particulate matter for comparison to NAAQS, South Coast 

AQMD has used twenty-four hour FRM filter-based PM measurements. However, 

providing public information based on real-time hourly data is more appropriate for fire 

events. Currently South Coast Air Quality Management District does not have a location 

to represent the Temecula Valley. During FY 2009-10, South Coast Air Quality 

Management District proposes the establishment of a location in the Temecula Valley to 

monitor PM2.5 on a continuous basis. 

Crestline 

South Coast AQMD has been operating the Crestline station since 1973. The deteriorating 

state of the shelter along with compromises made to the siting criteria due to obstructions 

has made it a candidate for relocation. As part of regular air monitoring station 

improvements a new station shelter as been ordered to replace the existing trailer. South 

Coast proposes relocation of the site to a location which more adequately represents the 

area. Concurrent monitoring will take place for data comparison prior to any permanent 

move to a new site. 
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Lynwood

South Coast Air Quality Management District has been operating the Lynwood station 

since 1973. The deteriorating state of the leased building has made it necessary to relocate 

the station to nearby Compton, a former MATES-III site, located two miles from current 

site. Concurrent CO monitoring began at the new site in May 2005. A comparison 

between the two sites found data trends to be comparable. On October 30th, 2008 the 

Lynwood station permanently closed and on November 5

th 2008, the Compton site began 

monitoring as a permanent network site. 

Mira Loma 

South Coast Air Quality Management District has been operating the Mira Loma (Jurupa) 

station as part of the Children’s Health Study. The deteriorating state of the leased trailer 

along with the compromises made to the siting criteria because of school expansion makes 

it a candidate for relocation to a more representative site. Concurrent monitoring began at 

the Mira Loma (Van Buren) station in November, 2005. Comparisons between the two 

sites found data trends to be comparable. Closure of the Mira Loma (Jurupa) is planned 

during FY 2009-10. 

Long Beach (South) 

South Coast Air Quality Management District has been operating the Long Beach (South) 

station as part of the ambient air monitoring network. Recent construction of the buildings 

adjacent to our air monitoring equipment compromises the siting criteria. Monitoring 

began at the Long Beach (Anaheim St.) site as part of the Port Area Monitoring Project 

during 2007. If comparison of concurrent data between the two locations demonstrates 

some comparability, or if the Anaheim St. site shows consistently higher levels of PM, the 

Long Beach (South) site may be relocated to Anaheim St. in FY 2009-10. 

PM2.5 Monitoring Network 

As part of the actions to enhance continuous data collection capability for wild fire events 

as well as health studies, South Coast AQMD began the process of adding of seven 

continuous PM2.5 Beta Attenuation monitors (BAM) in October of 2008. The seven new 

BAMs are Met One BAM 1020 Federal Equivalency Method (FEM) approved monitors. 

FEM Monitors were installed at Anaheim, Burbank, Long Beach, Los Angeles, Mira Loma 

(Van Buren), Rubidoux, and South Long Beach. Relocated Non-FEM BAM monitors 

were installed at Reseda and Santa Clarita. Additional relocated samplers are to be 

installed during 2009 at the Crestline, Riverside Magnolia, Temecula, and Upland sites. 

Rubidoux will have a non-FEM BAM 1020 collocated with a FEM BAM 1020. FEM 

BAMS are designated as Special Purpose Monitors (SPM) for a period of two years to 

assess comparability to FRM samples. 

South Coast AQMD also completed minor changes to the current FRM monitoring 

schedule to enhance FEM BAM comparisons. On April, 16th, 2009 the Burbank and Mira 

Loma (Van Buren) FRM samplers changed to daily sampling from the current 1-in-3 day 

schedule and the Azusa location changed from every day sampling to 1-in-3 day sampling. 

Federal minimum monitoring requirements for PM2.5 are still being met and/or exceeded. 
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In 2009, South Coast Air Quality Management District began enhanced speciated PM2.5

sampling in support if the AQMP (see Special Studies above). Met One speciation 

samplers (SASS) began 1-in-3 day operation on January 1st 2009 for a period of one year 

at the Burbank, Long Beach (North) and Upland sites. Existing speciation sites at Central 

Los Angeles, Rubidoux, Fontana, and Anaheim increased sampling frequently from 1-in-6 

day to 1-in-3 day for calendar year 2009. 

NCore 

NCore monitoring rules require that South Coast Air Quality Management District make 

NCore stations operational by January 1st, 2011. To meet this goal, South Coast Air 

Quality Management District has purchased trace level analyzers for CO, NOy and SO2. 

NCore stations will be located at Rubidoux and Central Los Angeles, which are both 

existing STN and NATTS sites. See Appendix C for the complete NCore network plan. 

PAMS 

On October 17th, 2006, EPA issued final amendments to PAMS monitoring requirements 

in 40 CFR part 58. The changes were to implement the recommendations of the PAMS 

workgroup. Changes reflected site type and monitoring objectives defined as: 

Type 1 – Upwind and background characterization site. Type 1 sites are intended to 

characterize upwind, background and transported ozone and its precursor concentrations 

entering the area. Type 1 sites are located in the predominant morning upwind direction 

from the local area of maximum precursor emissions and at a distance sufficient to obtain 

urban scale measurements. 

Type 2 – Maximum ozone precursor emissions impact sites. Type 2 sites are intended to 

monitor the magnitude and type of precursor emissions in the area where maximum 

precursor emissions representative of the metropolitan statistical area (MSA) are expected 

to impact. Type 2 sites are located immediately downwind of the area of maximum 

precursor emissions. They are typically placed near the downwind boundary of the central 

business district or primary area of precursor emissions mix to obtain neighborhood-scale 

measurements. If additional Type 2 monitoring is required, Type 2A sites are placed in the 

second most predominant morning wind direction. 

Type 3 – Maximum ozone concentration sites. Type 3 sites are intended to monitor 

maximum ozone concentrations occurring downwind from the area of maximum precursor 

emissions. Typically, these sites are located 10 to 30 miles from the fringe of the urban 

area. 

Type 4 – Extreme downwind monitoring sites. Type 4 sites are intended to characterize 

the extreme downwind transported ozone and its precursor concentrations exiting the area. 

Type 4 sites are located in the predominant afternoon downwind direction from the local 

area of maximum precursor emissions at a distance sufficient to obtain urban-scale 

measurements. 

EPA final amendments to PAMS monitoring requirements proposed a reduction in the 

number of required PAMS sites as follows: 

 Only one Type 2 site would be required per area regardless of population. 
Air Quality Monitoring Network Plan – July 2009 

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 Type 4 sites would no longer be required. 

 Only one Type 1 or one Type 3 site would be required per area. 

 Speciated VOC measurements would only be required at Type 2 sites and one other 

site (either Type 1 or Type 3) per PAMS area. 

 Carbonyl sampling would only be required in areas classified as serious or above 

for the 8-hour O3 standard. 

 Conventional NO2/NOx monitors would only be required at Type 2 sites. 

 High sensitivity NOy monitors would be required at one site per PAMS area (either 

Type 1 or Type 3). 

 High sensitivity CO monitor would be required at one Type 2 sites per PAMS area. 

EPA also suggested that where possible, NCore multipollutant stations should be 

collocated, with other multipollutant air monitoring stations including PAMS, National Air 

Toxic Trends Station sites (NATTS), and the PM2.5 Speciation Trends Network sites 

(STN). Collocation allows use of the same monitoring platform and equipment to meet the 

objectives of multiple programs. 

In September 2008, a report from the EPA PAMS network assessment project was issued 

whose objectives were to assess how well the current PAMS network was meeting its 

monitoring objectives, to determine which sites are most useful for meeting these 

objectives, to identify potentially redundant, ineffective, or unnecessary sites, and to assess 

other enhanced ozone monitoring activities that may prove useful. South Coast PAMS 

network site specific observations include: 

 Burbank – highest concentrations in country; reclassify as a type 2 site. 

 Santa Clarita – high ozone, VOC, and NOx concentrations; consistent with Type 2 

site characteristics. 

 Banning – lowest concentrations in South Coast Air Basin among type 2 sites; data 

more consistent with Type 3 or 4 site when entire LA basin is considered; consider 

reclassifying site. 

 Azusa – high VOC and NOx concentrations, low ozone concentrations; site now 

more closely resembles a Type 2 site and evaluate its usefulness. 

 Upland – no longer consistent with Type 4 site characteristics; consider classifying 

as Type 3. 

 LAX Hastings – high absolute concentrations, low relative to other sites; 

characteristic of a Type 1 site under typical wind conditions. 

 Pico Rivera – very high NOx concentrations; consistent with type 2 site 

characteristics. 

To address regulatory changes, site specific observations from the PAMS network 

assessment project, and potential synergies between programs, South Coast proposes the 

following changes to the current PAMS monitoring network: 

 Burbank to be reclassified from Type 2/1 to Type 2. This proposed change 

addresses the PAMS network assessment project observation that Burbank has the 
Air Quality Monitoring Network Plan – July 2009 

12 

highest concentrations for ozone in the country and that it should be reclassified as 

a Type 2 site. 

 Santa Clarita to be reclassified as Type 3 from Type 2. Although the PAMS 

network assessment project observed that Santa is consistent with Type 2 site, data 

is more consistent with a Type 3 maximum ozone concentration site than a Type 2 

ozone precursor site. 

 Banning to be relocated to Los Angeles (Main). The PAMS network assessment 

project observed that Banning was the lowest of all the Type 2 sites and should be 

reclassified to a Type 3 or 4 site. Considering regulatory changes, and EPA desire 

to have multipollutant stations collocated among PAMS, NATTS, NCore, and STN 

programs, South Coast proposes relocation of the Banning PAMS site to the Los 

Angeles (Main) site as a Type 2 site. This satisfies the EPA recommendation for 

use of the same monitoring platform and equipment to meet the objectives of 

multiple programs. 

 Azusa to be reclassified from Type 3 to Type 2. This proposed change addresses 

the PAMS network assessment project observation that Azusa has high VOC, and 

NOx concentrations, while also having low ozone concentrations. The site now 

more closely resembles a Type 2 ozone precursor site. 

 Upland to be relocated to Rubidoux site. The PAMS network assessment project 

observed that Upland was no longer consistent with a Type 4 site and 

recommended reclassification to Type 3. Considering regulatory changes and EPA 

desire to have multipollutant stations collocated among PAMS, NATTS, NCore, 

and STN programs; South Coast proposes relocation of the Upland PAMS site 

further inland to the Rubidoux site as a more appropriate Type 3 location. 

 LAX Hastings and Pico Rivera are to remain unchanged. 

The proposed PAMS network changes, monitoring objectives and requirements are 

summarized in TABLE 6. 

Lead Monitoring Network 

On October 15th, 2008 EPA issued the final rule for Lead National Ambient Air Quality 

Standards (NAAQS). The rule lowered the level and form of the NAAQS for ambient 

Lead, and requires state monitoring network plans to be submitted to EPA by July 1st, 2009 

as part of the annual network plan. Implementation of newly-required source oriented 

monitors must occur by January 1st, 2011. South Coast AQMD currently operates a 

particulate lead network which consists of 10 non-source-oriented monitors and 4 source 

specific locations (at three sources). The spatial distribution of these sites is shown in 

Figure 6 in Appendix A; please see Appendix D for the complete Lead Network Plan. 

Air Monitoring Station Improvements 

As part of the actions to enhance quality of data collected; SCAQMD will replace existing 

deteriorated shelters at the Crestline, Indio, La Habra, Pasadena, Redlands, Rubidoux, San 

Bernardino, and West Los Angeles sites. The new shelters will be installed at the same 

locations as the existing structures. 

 
Air Quality Monitoring Network Plan – July 2009 

13 

Minimum Monitoring Requirements 

The SCAQMD jurisdictional boundary encompasses two Metropolitan Statistical Areas (MSA) 

as defined by the U.S. Office of Management and Budget and the U.S. Census Bureau. The Los 

Angeles-Long Beach-Santa Ana MSA (Code 31100) had a population of 12,365,627 based on 

the year 2000 U.S. Census. The Riverside-San Bernardino-Ontario MSA (Code 40140) had a 

population of 3,254,821 in 2000. The minimum number of monitors for each pollutant is based 

on MSA population as described in 40 CFR 58 Appendix D. The SCAQMD network exceeds 

the minimum monitoring requirements for all criteria pollutants. Details are provided below. 

Ozone

MSA Min. # 

Monitors 

Required

# 

Monitors 

Active 

31100 4 17 

40140 2 13 

PM2.5

MSA Min. # 

Monitors 

Required

# 

Monitors 

Active 

31100 3 12 

40140 3 11 

PM10

MSA Min. # 

Monitors 

Required

# 

Monitors 

Active 

31100 4-8 9 

40140 6-10 16 

NO2

MSA Min. # 

Monitors 

Required

# 

Monitors 

Active 

31100 0 16 

40140 0 9 

SO2

MSA Min. # 

Monitors 

Required

# 

Monitors 

Active 

31100 0 5 

40140 0 2 
Air Quality Monitoring Network Plan – July 2009 

14 

CO

MSA Min. # 

Monitors 

Required

# 

Monitors 

Active 

31100 0 17 

40140 0 9 

Pb

MSA Min. # 

Monitors 

Required

# 

Monitors 

Active 

31100 2 7 

40140 0 5 

Minimum PAMS Monitoring 

South Coast AQMD 

Monitoring Area 

Min. # 

Monitors Sites 

Required 

# Monitoring 

Sites Active 

Type 1 or 3 1 3 

Type 2 2 4 

Type 4 0 0 
Air Quality Monitoring Network Plan – July 2009 

15 

TABLE 1. List of Monitoring Sites 

Location AQS No. Pollutants Monitored Start Date 

Anaheim 060590007 CO,NO2,O3,PM10,PM2.5 08/01 

Azusa 060370002 CO,NO2,O3,PM10,PM2.5,SO4 01/57 

Banning Airport 060650012 NO2,O3,PM10, PM2.5 04/97 

Big Bear 060718001 PM2.5 02/99 

Burbank 060371002 CO,NO2,SO2,O3,PM10,PM2.5 10/61 

Compton 3

060371302 CO,NO2,O3,Pb,PM2.5 01/04 

Costa Mesa 060591003 CO,NO2,SO2,O3 11/89 

Crestline 060710005 O3,PM10 10/73 

Fontana 060712002 CO,NO2,SO2,O3,PM10,PM2.5,SO4 08/81 

Glendora 060370016 CO,NO2,O3,PM2.5,PM10 08/80 

Indio 060652002 O3,PM10,PM2.5 01/83 

La Habra 060595001 CO,NO2,O3 08/60 

Lake Elsinore 060659001 CO,NO2,O3,PM2.5,PM10 06/87 

LAX Hastings 060375005 CO,NO2,O3,PM10,Pb,SO4 04/04 

Long Beach (Anaheim St.) 1 TBD 

Long Beach (Hudson) 1 TBD 

Long Beach (North) 060374002 CO,NO2,SO2,O3,PM10,PM2.5,Pb,SO4 10/62 

Los Angeles (Main St.) 060371103 CO,NO2,SO2,O3,PM10,Pb,PM2.5,SO4 09/79 

Lynwood 2

060371301 CO,NO2,O3,Pb.PM2.5 10/73 

Mira Loma (Jurupa) 4 N/A CO,NO2,O3,PM10 10/93 

Mira Loma (Van Buren) 060658005 CO,NO2,O3,PM10,PM2.5 11/05 

Mission Viejo 060592022 CO,O3,PM10,PM2.5 06/99 

Norco 060650003 PM10 12/80 

Ontario Fire Station 060710025 PM10,PM2.5 01/99 

Palm Springs 060655001 CO,NO2,O3,PM10,PM2.5 04/71 

Pasadena 060372005 CO,NO2,O3,PM2.5,SO4 04/82 

Perris 060656001 O3,PM10 05/73 

Pico Rivera #2 060371602 CO,NO2,O3,Pb,PM2.5,SO4,PM10 09/05 

Pomona 060371701 CO,NO2,O3 06/65 

Redlands 060714003 O3,PM10 09/86 

Reseda 060371201 CO,NO2,O3,PM2.5 03/65 

Riverside 060651003 CO,Pb,PM2.5,SO4 10/72 

Rubidoux 060658001 CO,NO2,SO2,O3,PM10,Pb,PM2.5,SO4 09/72 

San Bernardino 060719004 CO,NO2,O3,PM10,Pb,PM2.5 05/86 

Santa Clarita 060376012 CO,NO2,O3,PM10,PM2.5 05/01 

South Long Beach 060374004 PM10,Pb,PM2.5,SO4 06/03 

Temecula 1

TBD 

Upland 060711004 CO,NO2,O3,Pb,PM2.5,PM10,SO4 03/73 

West Los Angeles 060370113 CO,NO2,O3,SO4 05/84 

1

 Site to begin operation in Fiscal Year 2009-2010 

2

 Site closed 10/30/08 

3

 Site replaced Lynwood AMS 11/05/08 

4

 Site to be closed in Fiscal Year 2009-2010
Air Quality Monitoring Network Plan – July 2009 

16 

TABLE 2. FRM/FEM Criteria Pollutant Monitoring Objective and Spatial Scales 

MONITORING OBJECTIVE SPATIAL SCALE 

HC – High Concentrations MI – Microscale 

RC – Representative Concentrations MS – Middle Scale 

IM – Impact NS – Neighborhood Scale 

BL – Background US – Urban Scale 

Location CO NO2 SO2 O3 PM10 PM2.5 Pb 

Anaheim NS/RC US/RC NS/RC NS/RC NS/RC 

Azusa NS/RC US/RC US/HC NS/RC NS/RC 

Banning Airport NS/RC NS/RC NS/RC 

Big Bear NS/RC 

Burbank NS/HC NS/RC NS/RC US/HC NS/RC NS/RC 

Compton 3 MS/HC MS/RC NS/RC NS/RC NS/RC 

Costa Mesa NS/RC NS/RC NS/RC NS/RC 

Crestline NS/HC NS/RC 

Fontana NS/RC US/RC NS/RC US/RC NS/HC NS/RC 

Glendora NS/RC NS/RC NS/HC 

Indio NS/RC NS/HC NS/RC 

La Habra NS/RC US/RC NS/RC 

Lake Elsinore NS/RC NS/RC NS/RC 

LAX Hastings MS/RC MS/RC NS/RC MS/RC NS/RC NS/RC 

Long Beach (Anaheim St)

1

 

Long Beach (Hudson) 

Long Beach (North)

6 MI/HC MS/RC NS/HC MS/RC MI/RC NS/HC MI/RC 

Los Angeles (Main St.) NS/RC NS/HC NS/RC NS/RC NS/RC NS/HC NS/RC 

Lynwood 2 MS/HC MS/RC NS/RC NS/RC NS/RC 

Mira Loma (Jurupa) 4 NS/RC NS/RC NS/RC NS/HC 

Mira Loma (Van Buren) NS/RC NS/RC NS/RC NS/HC NS/RC 

Mission Viejo NS/RC NS/RC NS/RC NS/RC 

Norco NS/RC 

Ontario Fire Station NS/HC NS/RC 

Palm Springs NS/RC NS/RC NS/RC NS/RC NS/RC 

Pasadena MS/RC MS/HC NS/RC NS/RC 

Perris NS/RC NS/RC 

Pico Rivera #2 NS/RC NS/HC NS/HC NS/RC NS/RC 

Pomona MI/RC MS/RC MS/HC 

Redlands NS/RC NS/RC 

Reseda NS/RC US/RC US/HC NS/RC 

Riverside 5,6 MI/HC US/RC NS/RC MI/HC 

Rubidoux MS/RC US/RC NS/RC US/HC NS/HC NS/HC NS/RC 

San Bernardino6 MS/RC US/RC NS/HC NS/HC NS/RC NS/RC 

Santa Clarita NS/RC NS/RC US/HC NS/RC NS/RC 

South Long Beach NS/HC NS/RC NS/HC 

Temecula 1 

Upland NS/RC NS/RC NS/RC NS/RC 

West Los Angeles NS/RC MS/HC MS/RC 

1

 Site to begin operation in Fiscal Year 2009-2010 

2

 Site closed 10/30/08 

3

 Site replaced Lynwood AMS 11/05/08

4

 Site to be closed Fiscal Year 2009-2010 

5

 NO2 monitor installed 10/02/08 as SPM 

6 Pb to be discontinued FY 2009-2010
Air Quality Monitoring Network Plan – July 2009 

17 

TABLE 3. FRM/FEM Criteria Pollutant Monitoring Purposes 

MONITORING PURPOSE

BK – Background Level RC – Representative Concentration 

HC – High Concentration SPM – Special Purpose Monitoring 

TP – Pollutant Transport TR – Trend Analysis 

EX – Population Exposure CP – Site Comparisons 

SO – Source Impact 

Location CO NO2 SO2 O3 PM10 PM2.5 Pb 

Anaheim TR TR/RC TR TR TR/EX

Azusa TR TR/RC TR TR TR/EX 

Banning Airport TP/RC TP TP 

Big Bear EX/SO/TP 

Burbank TR TR/RC TR TR TR TR/EX 

Compton 3 TR/HC TR/RC TR/RC EX/RC EX 

Costa Mesa RC TR/RC TR RC 

Crestline HC TP/RC 

Fontana RC TP/RC TR RC HC EX/TP 

Glendora RC TR/RC HC 

Indio TP HC TP/EX 

La Habra RC TR/RC RC 

Lake Elsinore TP/RC TP/RC TP/RC 

LAX Hastings BK BK BK BK BK BK 

Long Beach (Anaheim St)

1

 

Long Beach (Hudson) 

Long Beach (North)

6

 HC TR/RC TR/HC TR TR/RC EX/HC EX 

Los Angeles (Main St.) SO/RC SO/HC TR TR/RC TR/RC EX/HC EX 

Lynwood 2 TR/HC TR/RC TR/RC EX/RC EX 

Mira Loma (Jurupa) 4 TP/RC TP/RC TR/RC HC/CP 

Mira Loma (Van Buren) CP CP CP HC/CP CP 

Mission Viejo RC TR/RC TR/RC EX/RC 

Norco TR/RC 

Ontario Fire Station HC EX/RC 

Palm Springs TP/RC TP/RC TP TP/RC EX/TP 

Pasadena TR/RC TR/HC TR/RC EX/RC 

Perris TP TR 

Pico Rivera #2 RC HC HC EX/RC EX 

Pomona RC RC HC 

Redlands TP/RC TP/RC 

Reseda RC TR/RC HC EX/RC 

Riverside 5,6 HC TR/RC EX/RC EX 

Rubidoux TR/RC TR/RC TR TR/HC TR/HC EX/TR/HC EX 

San Bernardino6 TR/RC TP/RC TR/HC TR/HC EX/TR EX 

Santa Clarita RC TP/RC TP/HC RC EX/RC 

South Long Beach HC EX/SO EX 

Temecula 1 

Upland RC TR/RC TR/RC EX 

West Los Angeles RC TR/HC RC 

1

 Site to begin operation in Fiscal Year 2009-2010 

2

 Site closed 10/30/08 

3

 Site replaced Lynwood AMS 11/05/08 

4 Site to be closed Fiscal Year 2009-2010 

5

 NO2 installed as SPM on 10/02/08 

6

 Pb to be discontinued FY 2009-2010
Air Quality Monitoring Network Plan – July 2009 

18 

TABLE 4. Continuous PM10/PM2.5 Monitoring Purpose, Objective and Spatial Scales 

MONITORING OBJECTIVE SPATIAL SCALE TYPE

HC – High Concentrations MI – Microscale BAM (NON-FEM) 

RC – Representative Concentrations NS – Neighborhood Scale TEOM BAM (FEM) 

 MONITORING PURPOSE 

SO – Source Impact RM – Real-Time Reporting/Modeling 

TP – Pollutant Transport SPM – Special Purpose Monitoring 

TR – Trend Analysis 

 

Location Continuous PM10 Continuous PM2.5 

Type Purpose Objective Scale Type Purpose Objective Scale 

Anaheim 1 TEOM RM RC NS BAM/FEM SPM RC NS 

Banning Airport BAM/NON-FEM RM RC NS 

Burbank 1 TEOM RM RC NS BAM/FEM SPM RC NS 

Crestline 3 BAM/NON-FEM RM 

Glendora TEOM RC NS BAM/NON-FEM RM RC NS 

Indio 5 BAM RM HC NS 

Lake Elsinore TEOM RC NS BAM/NON-FEM RM RC NS 

Long Beach (Anaheim St) 4 

Long Beach (Hudson) 

Long Beach (North) 1 TEOM RC MI BAM/FEM SPM 

Los Angeles (Main St.)

 1,5 BAM RM RC NS BAM/FEM SPM HC NS 

Mira Loma (Jurupa) 6 TEOM RM HC NS RC NS 

Mira Loma (Van Buren)

 1 BAM/FEM SPM RC NS 

Palm Springs 5 BAM RM HC NS 

Reseda 2 BAM/NON-FEM 

Riverside 3 BAM/NON-FEM RM 

Rubidoux 1 TEOM RM HC NS BAM/FEM SPM HC NS 

San Bernardino TEOM RM RC NS 

Santa Clarita 2 BAM/NON-FEM RM 

South Long Beach 1 BAM/FEM SO/RM/SPM RC NS 

Temecula 3,4 BAM/NON-FEM RM 

Upland 3 TEOM RM RC NS BAM/NON-FEM RM 

1

 FEM BAM Samplers replaced NON-FEM Samplers during FY 2008-2009 and designated as special purpose 

 monitors 

2

 NON-FEM BAM Samplers deployed during Fiscal Year 2008-2009 

3

 NON-FEM BAM Samplers to be deployed during Fiscal Year 2009-2010 

4

 Site planned during Fiscal Year 2009-2010 

5

 To be replaced with TEOM Fiscal Year 2009-2010 

6

 To be closed Fiscal Year 2009-2010
Air Quality Monitoring Network Plan – July 2009 

19 

TABLE 5. PM2.5 FRM Monitoring Stations Assigned Site Numbers 

Location Site Code ARB No. AQS No. Start Date Schedule 

Anaheim ANAH 30178 060590007 01/03/99 Daily 

Azusa 1 AZUS 70060 060370002 01/04/99 1-in-3

Big Bear BGBR 36001 060718001 02/08/99 1-in-6 

Burbank 2

BURK 70069 060371002 01/21/99 Daily

Compton 3

COMP 70112 060371302 11/08 1-in-3 

Fontana FONT 36197 060712002 01/03/99 1-in-3 

Indio “A” INDI 33157 060652002 01/30/99 1-in-3 

Indio “B” INDI 33157 060652002 05/12/00 1-in-6 

Long Beach (Anaheim St.) TBD 

Long Beach (North) LGBH 70072 060374002 01/03/99 Daily 

Los Angeles “A” (Main St.) CELA 70087 060371103 01/03/99 Daily 

Los Angeles “B” (Main St.) CELA 70087 060371103 01/06/99 1-in-6 

Lynwood 4

LYNN 70084 060371301 01/03/99 1-in-3 

Mira Loma (Van Buren) 2 MRLM 33165 060658005 11/09/05 Daily 

Mission Viejo MSVJ 30002 060592022 06/15/99 1-in-3 

Ontario Fire Station ONFS 36025 060710025 01/03/99 1-in-3 

Palm Springs PLSP 33137 060655001 12/26/99 1-in-3 

Pasadena PASA 70088 060372005 03/04/99 1-in-3 

Pico Rivera #2 PICO 70185 060371602 09/12/05 1-in-3 

Reseda RESE 70074 060371201 01/24/99 1-in-3 

Riverside RIVM 33146 060651003 01/06/99 1-in-3 

Rubidoux “A” RIVR 33144 060658001 01/03/99 Daily 

Rubidoux “B” RIVR 33144 060658001 01/03/99 1-in-6 

San Bernardino SNBO 36203 060719004 01/03/99 1-in-3 

South Long Beach SLGB 70110 060374004 06/20/03 Daily 

1 Change to 1-in-3 on 04/16/09 

2

 Change to daily on 04/16/09 for comparison to FEM BAM 

3

 Replaced Lynwood AMS on 11/05/08 

4

 Site closed 10/30/08 
Air Quality Monitoring Network Plan – July 2009 

20 

TABLE 6. PAMS Proposed Network 

July 1 to September 30 October 1 to June 30 

Site 

Type 

Date 

Established as 

PAMS 

Site / AQS ID# VOC Carbonyl VOC Carbon

1 04/01/2004 

LAX Hastings (replaced Hawthorne) 

8 x 3 hr samples every 3rd

day and 1 x 24 hr sample every 6th day 

No Sampling 1 x 24 hr sample every 6th day No Samplin

2 06/01/1995 Azusa 

8 x 3 hr samples every 3rd

day and 1 x 24 hour sample every 6th day 

No Sampling 1 x 24 hr sample every 6th day No Samplin

2 07/01/1997 Burbank 

Continuous GC and 1 x 24 hr sample every 6th

day 

8 x 3 hr samples every day and 1 x 24 hr sample every 6th day 

1 x 24 hr sample every 6th day 

1 x 24 hr saevery 6th da

2 06/01/2009 Los Angeles (Main) 

8 x 3 hr samples every 3rd

day and 1 x 24 hour sample every 6th day 

8 x 3 hr samples every 3rd day and 1 x 24 hr 

sample every 6th day 

1 x 24 hr sample every 6th day 

1 x 24 hr saevery 6th da

2 08/01/2005 Pico Rivera #2 

Continuous GC and 1 x 24 hr sample every 6th

day 

8 x 3 hr samples every day and 1 x 24 hr sample every 6th day 

1 x 24 hr sample every 6th day 

1 x 24 hr saevery 6th da

3 06/09/2009 Rubidoux 

8 x 3 hr samples every 3rd

day and 1 x 24 hour sample every 6th day 

No Sampling 1 x 24 hr sample every 6th day No Samplin

3 05/01/2001 Santa Clarita 

8 x 3 hr samples every 3rd

day and 1 x 24 hour sample every 6th day 

8 x 3 hr samples 3rd day 

and 1 x 24 hr sample every 6th day 

1 x 24 hr sample every 6th day 

1 x 24 hr saevery 6th da

MONITORING OBJECTIVES: MONITORING REQUIREMENTS: REDUCED REQUIREMENTS: 

1 – Upwind and background characterization site One type 1 or type 3 site required per area Speciated VOC only required at type 2 – Maximum ozone precursor emissions impact site One type 2 site required per area Carbonyl only required in areas clas3 – Maximum ozone concentration site No type 4 required NO/NOx required only at type 2 

4 – Extreme downwind monitoring site NOy required at one site per PAMS