# SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT

SOUTH COAST AIR QUALIT Y MANAGEMENT DISTRICT ANNUAL AIR QUALITY MONITORING
NETWORK PLAN

July, 2014

Prepared by

Rene M. Bermudez Principal Air Quality Instrument Specialist

Andrea Polidori Ph. D Quality Assurance Manager

Jason Low Ph. D Atmospheric Measurements Manager

### Air Quality Monitoring Ne twork Plan – July 2014

i 

## Table of Contents

Page

Introduction 1

Public Comments 1 Network Design 1 Special Programs 19 Recent or Proposed Modifications to Network 22 Minimum Monitoring Requirements Data Submittal and Archiving Requirements 37

44

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: 

### PM2.5 Continuous Monitor Comp arability Assessment and Request for Waiver

### Air Quality Monitoring Ne twork Plan – July 2014

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, re locations, or terminations of monitoring sites or instrumentation. This report describes the ne twork of ambient air qua lity monitors in the jurisdiction of and operated by the South Coast Ai r Quality Management Di strict (SCAQMD). It includes a review of actions taken during the 20 13-2014 fiscal year and plans for action in the year ahead. This plan addresses the requirement for an annual network plan as listed in Title 40, Part 58, Section 10 of the Code of Federal Regu lations (40 CFR § 58.10). Regulations require the report be submitted to the U.S. Environmental Protection Agency (EPA) by July 1 of each year after a 30 day public comment period.

The SCAQMD staff, along with the Californi a Air Resources Board (CARB), conducted an extensive review of the air monitoring sites in the South Coast Air Basin (SCAB) in late 1980. During the review, State and Loca l Air Monitoring Stations (SLA MS) designations, site type, and spatial scales of representa tiveness were assigned to the crit eria pollutants monitored at each site. Since that time, the EP A Region IX and CARB staff visite d selected sites to confirm compliance with applicable siting criteria and rela ted requirements. The most recent site visits occurred in 2010 to conduct a comprehensive Tec hnical System Audit (TSA) of the ambient air monitoring network. Each year, SCAQMD staff c onducts an annual review of its air monitoring

network and submits it to the EPA. The review process focuses on current and future network air monitoring strategies an d network changes are made in cons ultation with the EPA and CARB. When re-location of monitoring sites is requir ed, site reports are up dated in the EPA’s Air Quality System (AQS) to document compliance with established siting criteria for the new

locations.



### Public Comments
Pursuant to Federal regulations, a draft plan is made available for public inspection and comment for a period of 30 days prior to submission of the final plan to EPA. Hard copies of the final document are made available on July 1, 2014 at the SCAQMD’s Public Information Desk in Diamond Bar, CA. The document is also available on the SCAQMD as of May 19, 2014 in the drop down menu under the “Library”, “Clean Air Pl ans” and “Air Monitoring Network Plan.” (http://www.aqmd.gov/home/library/clean-air-plans/monitoring-network-plan). The final document is submitted to the EPA on July 1, 2014. Public comments and responses are also submitted to EPA to fulfill Federal regulatory requirements.



### Network Design
The SCAQMD operates 38 permanent, monitoring st ations, and 4 single-pollutant source impact Lead (Pb) air monitoring site s in the SCAB 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 during the MATES IV project to monitor Ozone (O3) and continuous PM2.5 for the Long Beach area.

The newest source Pb sites were added in Ja nuary 2010 as required by EPA regulation. Table 1 provides a list of monitoring locat ions, the EPA AQS site codes, and the pollutants measured at each site. Table 2 provides the spatial scale a nd the site type for each monitor at all sites.

### Air Quality Monitoring Ne twork Plan – July 2014

2 Table 3 describes the monitoring pur pose for the monitors at each site . Table 4 describes the site type, spatial scale and monitori ng purpose for continuous particulat e analyzers at each site. A requirement of the annual network plan implemented in 2007, the monitoring purpose is the reason why a certain pollut ant is being measured at a certain site.

A list and description of monitoring purposes ar e provided below and portions are adapted from the CARB annual network plan for 2007.

Background Level monitoring is used to determine general background levels of air pollutants as they enter the SCAB.

High Concentration monitoring is conducted at sites to determine the highest concentration of an air pollutant in an ar ea within the monitoring networ k. 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 used to asse ss and mitigate upwind areas when transported pollutant affects neighboring downwind areas. Also, transport monitoring is used to determine the extent of regional pollutant transport among populated areas and to rural

areas.

Population Exposure monitoring is conducted to represen t the air pollutant concentrations that 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 ge ographical area. These sites do not necessarily indicate the highest c oncentrations in the area for a particular pollutant.

Source Impact monitoring is used to determine the im pact of significant sources or source categories of air quality emissions on ambient ai r quality. The air pollutant sources may be stationary or mobile.

Trend Analysis monitoring is useful for comp aring and analyzing air pollution concentrations over time. Usually, trend anal yses can be used to assess the progress in improving air quality for an area over a period of many years.

Site Comparison monitoring is used to assess the eff ect 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 pollutant s 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 SCAB.

### Air Quality Monitoring Ne twork Plan – July 2014

3 Multiple purposes for measuring a pollutant at a particular site are possible. There is some overlap between site type and monitoring purposes as defined by EPA and given in Tables 2, 3,

and 4.

### Air Quality Monitoring Ne twork Plan – July 2014

4 TABLE 1. List of Monitoring Sites

Location AQS No. Pollutants Monitored Start

Date

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

2 Anaheim Near Road 060590008 NO2 1/14

3 ATSF (Exide) 060371406 Pb 01/99

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

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

6 Big Bear 060718001 PM2.5 02/99

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

8 Closet World (Quemetco) 060371404 Pb 10/08

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

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

11 Crestline 060710005 O3,PM10 10/73

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

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

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

15 La Habra 060595001 CO,NO2,O3 08/60

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

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

18 Long Beach (Hudson) 060374006 CO, NO2,SO2,O3,PM10 1/10

19 Long Beach (North) 1 060374002 PM2.5 10/62

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

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

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

23 Norco 060650003 PM10 12/80

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

25 Ontario Near Road Unavailable NO2 6/14

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

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

28 Perris 060656001 O3,PM10 05/73

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

30 Pomona 060371701 CO,NO2,O3 06/65

31 Redlands 060714003 O3,PM10 09/86

32 Rehrig (Exide) 060371405 Pb 11/07

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

34 Riverside (Magnolia) 060651003 CO,NO2,Pb,PM10,PM2.5,SO4 10/72

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

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

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

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

39 Temecula 060650016 O3, PM2.5 06/10

40 Uddelholm ( Trojan Battery ) 060371403 Pb 11/92

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

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

1 Some pollutants were discontinued at Long Beach (N orth) on 9/30/2013 due to termination of lease.

### Air Quality Monitoring Ne twork Plan – July 2014

5 TABLE 2. FRM/FEM Criteria Pollutan t Spatial Scales and Site Type

SPATIAL SCALE SITE TYPE MI – Microscale HC – Highest Concentration MS – Middle Scale PE – Population Exposure NS – Neighborhood Scale IM – Source Oriented (Impact) US – Urban Scale BK – General Background

Location CO NO2 SO2 O3 Manual

PM10 Manual

PM2.5 Pb

Anaheim NS/PE US/PE NS/PE NS/PE NS/PE

Anaheim Near Road MI/HC ATSF (Exide) MI/IM

Azusa NS/PE US/PE US/HC NS/PE NS/PE Banning Airport NS/PE NS/PE NS/PE Big Bear NS/PE

Burbank NS/HC NS/PE NS/PE US/HC NS/PE NS/PE Closet World ( Quemetco ) MI/IM Compton MS/HC MS/PE NS/PE NS/PE NS/PE

Costa Mesa NS/PE NS/PE NS/PE NS/PE

Crestline NS/HC NS/PE

Fontana NS/PE US/PE NS/PE US/PE NS/HC NS/PE

Glendora NS/PE NS/PE NS/HC

Indio NS/PE NS/HC NS/PE

La Habra NS/PE US/PE NS/PE

Lake Elsinore NS/PE NS/PE NS/PE LAX Hastings MS/PE/BK MS/PE/BK NS/PE/BK NS /PE/BK NS/PE/BK NS/PE/BK Long Beach (Hudson) NS/HC NS/PE NS/HC NS/PE NS/PE Long Beach (North) 1 NS/HC Los Angeles (Main St.) NS/PE NS/HC NS/PE NS/PE NS/PE NS/HC NS/PE

Mira Loma (Van Buren) NS/PE NS/PE NS/PE NS/HC NS/HC Mission Viejo NS/PE NS/PE NS/PE NS/PE

Norco NS/PE

Ontario Fire Station NS/HC NS/PE

Ontario Etiwanda Near Road MI/HC Palm Springs NS/PE NS/PE NS/PE NS/PE NS/PE

Pasadena MS/PE MS/HC NS/PE NS/PE

Perris NS/PE NS/PE

Pico Rivera #2 NS/PE NS/HC NS/HC NS/PE NS/PE

Pomona MI/PE MS/PE NS/HC

Redlands NS/PE NS/PE Rehrig (Exide) MI/IM

Reseda NS/PE US/PE US/HC NS/PE

Riverside MI/HC US/P E NS/HC MI/HC

Rubidoux NS/PE US/PE NS/PE US/HC NS/HC NS/HC NS/PE

San Bernardino MS/PE US/PE NS/HC NS/HC NS/PE NS/PE

Santa Clarita NS/PE NS/P E US/HC NS/PE NS/PE South Long Beach NS/HC NS/HC NS/HC

Temecula NS/HC Uddelholm ( Trojan Battery ) MI/IM Upland NS/PE NS/PE NS/PE NS/PE West Los Angeles NS/PE MS/HC NS/PE

1 Some pollutants were discontinued at Long Beach (N orth) on 9/30/2013 due to termination of lease.

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6 TABLE 3. FRM/FEM Criteria Poll utant Monitoring Purposes

MONITORING PURPOSE BK – Background RC – Representative Concentration HC – High Concentration RM – Real-Time Reporting/Modeling TP – Pollutant Transport TR – Trend Analysis EX – Population Exposure CP – Site Comparisons SO – Source Impact CO - Collocated

Location CO NO2 SO2 O3 Manual

PM10 Manual

PM2.5 Pb

Anaheim TR TR/RC TR TR/RC TR/EX

Anaheim Near Road EX/HC

ATSF (Exide) SO

Azusa TR TR/RC TR TR TR/EX Banning Airport TP/RC TP TP Big Bear EX/SO/TP

Closet World (Quemetco) SO

Burbank TR TR/RC TR TR TR/RC TR/EX Compton 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/CO 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 (Hudson) TR TR/RC TR/HC TR TR/RC Long Beach (North) 1 EX/HC Los Angeles (Main St.) SO/RC SO/HC TR TR/RC TR /RC/CO EX/HC/CO EX/CO

Mira Loma (Van Buren) TR/RC TR/RC TR/HC HC EX/HC/CO Mission Viejo RC TR/RC TR/RC EX/RC

Norco TR/RC

Ontario Fire Station HC/CO EX/RC

Ontario Etiwanda Near Road EX/HC Palm Springs TP/RC TP/RC TP TP/HC 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 Rehrig (Exide) SO/CO

Reseda RC TR/RC HC EX/RC

Riverside HC TR/RC EX/HC EX/CO

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

San Bernardino 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

Uddelholm (Trojan Battery) SO

Temecula TR/HC Upland RC TR/RC TR/RC EX West Los Angeles RC TR/HC RC

1 Some pollutants were discontinued at Long Beach (N orth) on 9/30/2013 due to termination of lease.

### Air Quality Monitoring Ne twork Plan – July 2014

7 TABLE 4. Continuous PM 10 

### /PM 2.5 

### Monitoring Purpose, Site Type and Spatial Scales

SITE TYPE SPATIAL SCALE INSTRUMENT TYPE

HC – High Concentration MI – Microscale TEOM PE – Population Exposure NS – Neighborhood Scale BAM (NON-FEM) BK - Background BAM (FEM)

MONITORING PURPOSE

SO – Source Impact RM – Real-Time Reporting/Modeling TP – Pollutant Transport SPM – Special Purpose Monitoring TR – Trend Analysis CO - Collocated

Location Continuous PM10 Continuous PM2.5 PM10 – 2.5

Type Purpose Site Type Scale Type Purpose Site Type Scale Operational

Anaheim BAM/FEM RM/TR PE NS BAM/FEM RM/TR PE NS
Banning Airport BAM/NON-FEM RM PE NS

Burbank TEOM/FEM RM/TR PE NS BAM/FEM RM/TR PE NS

Crestline BAM/NON-FEM RM PE NS

Glendora BAM/FEM RM PE NS BAM/NON-FEM RM PE NS

Indio TEOM/FEM RM HC NS

Lake Elsinore TEOM/FEM RM PE NS BAM/NON-FEM RM PE NS
Long Beach

(North) 1
Los Angeles
(Main St.) BAM/FEM RM/TR PE NS BAM/FEM RM HC NS Yes

Mira Loma ( Van Buren ) BAM/FEM RM HC NS BAM/FEM RM HC NS

Palm Springs TEOM/FEM RM/TP HC NS

Reseda BAM/NON-FEM RM PE NS

Riverside BAM/FEM RM HC NS BAM/NON-FEM RM HC NS

Rubidoux TEOM/FEM RM/TR HC NS BAM/FEM &

NON-FEM RM/TR/CO HC NS Yes

San

Bernardino TEOM/FEM RM/TR HC NS

Santa Clarita BAM/NON-FEM RM PE NS
South Long

Beach BAM/FEM RM/SO PE NS

Temecula BAM/NON-FEM RM PE NS
Upland BAM/FEM RM PE NS BAM/NON-FEM RM PE NS

1 Some pollutants were discontinued at Long Beach (N orth) on 9/30/2013 due to termination of lease

### Air Quality Monitoring Ne twork Plan – July 2014

8 A brief description of the criteria pollutant and program monitoring networks are provided

below:

OZONE (O3)

The SCAQMD operates 30 sites where O3 measurements are made as part of the Air Monitoring Network. O3 sites are spre ad throughout the SCAB with highest concentrations measured inland. Figure 1 in Appendix A shows the spatial distribution of

these sites and Table 16 shows the minimum monitoring requirements.

PM10
Size-selective inlet manual high volume sample rs are operated at 21 sites to meet the requirements for PM10 Federal Reference Method (FRM) sampling. The PM10 monitoring network contains on e site within 25% of the Federal NAAQS at Indio, as shown in the 2012 Air Quality Data Table (h ttp://www.aqmd.gov/home/l ibrary/air-qualitydata-studies/historical-data- by-year), Figure 9. The Indio, Rubidoux, and Ontario sites are designated PM10 collocated as shown in Table 24. All PM10 FRM monitors operate on a one day in six day schedule, with the ex ception of Indio and R ubidoux which operate on one day in three day schedule. The Indio and Los Angeles (Main) sites are shown as design value sites in Table 18. Based upon th e design values, the Indio site meets the minimum sampling schedule requirement as do es the Los Angeles (Main) site. The remaining sites meet or exceed the minimum 6 day sample schedule requirement.

PM10 continuous analyzers are ope rated at 12 sampling sites. These real-time devices are capable of making hourly particulate concentr ation measurements. Table 4 describes the monitor type, site type, monitoring purpose, and spatial scale for continuous particulate analyzers. Figure 2 in Appendix A shows the spatial distribution of the sampling sites and Table 18 shows the minimum monitoring requireme nts. Real-time monitors, for the most part, are clustered in the high concentration area s, with two located in the desert area where

wind-blown crustal material ha s caused exceedances of th e twenty-four hour standard during exceptional events. In downwind areas of the SCAB, a large fraction of particulate is formed in the atmosphere; PM10 reaches maximum levels during late summer through early winter months.

Where both 24 hour PM10 FRM samplers and PM10 FEM continuous analyzers are deployed together, they are sited as collocated for data comparison purposes. The 24 hour FRM PM10 sampler remains the primary anal yzer used for attainment purposes.

PM10-2.5
PM10-2.5 (PM Coarse) is required at NCore site s only and is derived from the continuous BAM PM10 and PM2.5 particulate monitors at those sites. The Purpose, Site Type and

Scale are similar to the continuous PM10 an d PM2.5 instruments from which data is calculated. PM Coarse is currently measured at the Los Angeles (Main St.) and Rubidoux

sites and is shown in Table 4.

### Air Quality Monitoring Ne twork Plan – July 2014

9 NITROGEN DIOXIDE (NO2)

The area wide NO2 network consists of 25 sites. These sites are mostly located in areas of highest NO2 concentration. The Near Road monitoring network consists of two sites which began in 2014 and two additional to begin January 1, 2015 which are located adjacent to the most heavily traveled roadwa ys identified in the basin. The spatial

distribution of NO2 monitors is shown in Figure 3 in Appendix A and minimum monitoring requirements are shown in Table 19. Additionally, the Regional Administrator identified 40 NO2 sites nationwide with a primary focus on siting these monitors in locations to protect susceptib le and vulnerable populations. The Regional Administrator in collaboration with SCAQMD indentified the Los Angeles (Main), Long Beach (North) and San Bernardino sites from the existing area -wide monitoring network to meet this requirement (58.10[a][5]). Review of 1992 through 2012 NO2 data shows the State and Federal standards for NO2 were not exceeded. The Long Beach (North) site NO2 was

closed on 9/30/2013 due to termination of the le ase by owner. SCAQMD is in the process of identifying a new monitoring location and potential consolidati on with nearby sites.

On February 9, 2010 EPA promulgated new mi nimum monitoring requirements for NO2 which require state and local agencies to inst all near road monitoring sites. On March 7, 2013 EPA revised the Ambient Nitrogen Diox ide Requirements postponing initial near road monitoring site implementation un til January 1, 2014 and additional site implementation until January 1, 2015. The plan for the near road network is detailed in the section titled, “Recent or Proposed Modifications to Network.”

CARBON MONOXIDE (CO)

Area wide CO monitors measure concentr ations at 22 locations and microscale

measurements are taken at 3 locations w ithin the SCAQMD ambient air monitoring network. Figure 4 in Appendix A shows the sp atial distribution of these sites. CO emissions, primarily from motor vehicles, show a pattern consistent with major freeway

arteries. A review of data for 2013 shows State and Federal standards for CO were not

exceeded.

On August 31, 2011 EPA issued the Final Rule for the Review of National Ambient Air Quality Standards for CO. EPA revised the minimum requirements for CO monitoring by requiring CO monitors to be sited near roads in certain urban areas. EPA requires the collocation of one CO monitor with a near road NO2 monitor in urban areas having populations of 1 million or more. EPA is specifying that required monitors in 

### Core Based

Statistical Areas (CBSA) of 2.5 million or more persons be operational by January 1, 2015.

One near road CO monitoring site is required in each of the 

### Los Angeles-Long Beach-Santa Ana MSA\CBSA (Code 31100) and the Rivers ide-San Bernardino-Ontario MSA\CBSA (Code 40140) areas. Near road CO monitoring is to be implemented concurrently with the near road NO2 monitoring. The minimum mo nitoring requirements are shown in Table 21. The plan for the near road network is detailed in the sectio n titled, “Recent or Proposed Modifications to Network.”

### Air Quality Monitoring Ne twork Plan – July 2014

10 CBSA Population Estimate NEI SO2 Emmissions PWEI Value Minimum Required SO2

31080 13,131,431 12,062.81 158,402 2

40140 4,380,878 2,316.73 10,149 1 

### SULFUR DIOXIDE (SO2)

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 clus tered mostly in the areas wher e these sources are located.

On June 22, 2010 EPA strengthened the SO2 National Ambient Air Quality Standard (NAAQS). Network design requirements included new minimum requirements be determined by the Population Weighted Emissions Index (PWEI).

The PWEI shall be calculated by States for each CBSA they contain or share with

another State or States for use in the im plementation of or adjustment to the SO2 monitoring network. The PW EI shall be calculated by multiplying the population of each CBSA, using the most current census data or estimates, and the total amount of SO2 in tons per year emitted w ithin the CBSA area, using an aggregate of the most recent county level emissions data available in the National Emissions Inventory (NEI) for each county in each CBSA. The resulting product shall be divided by one million, providing a PWEI value, the units of which are million persons-tons per year. For any CBSA with a calculated PWEI value equal to or greater than 1,000,000, a minimum of three SO 2 monitors are required within that CBSA. For any CBSA with a calculated PW EI value equal to or greater than 100,000, but less than 1,000,000, a minimum of two SO2 monitors are required within that CBSA and for any CBSA with a calculated PWEI value equal to or greater than 5,000, but less than 100,000, a minimum of one SO2 monitor is required within that CBSA.

TABLE 5. PWEI Calculatio n and Minimum Required SO2

SCAQMD exceeds the minimum requi rement for SO2 monitors; the Federal standard has not been exceeded for nearly 33 years.

PARTICULATE LEAD
Total Suspected Particulate (TSP) Pb measuremen ts are collected at 13 sites as part of the network; 4 of the sites are Source Impact for Pb, and the remaining 9 sites measure ambient Pb and selected ions such as sulfates (SO4)

.



### In 1990, the EPA requested that the SCAQMD collect ambient air particulate samples near several large Pb handling (battery recycli ng) facilities. Long-term source impacted monitoring began in 1991. A facility in the C ity of Industry exceeded the Federal ambient particulate Pb standard during the second quarter of Fiscal Year 1991-92

. Pb 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

### Air Quality Monitoring Ne twork Plan – July 2014

11 facility in the City of Vernon exceeded the old Federal ambient particulate Pb standard (1.5 ug/m3 quarterly) during the first quarter of 200 8; the other facility was found to remain

below this level.

The Rehrig (Exide) microscale site measur es the highest Pb concentrations in the monitoring network. Upon revi ew of data (2010-2012) Rehrig (Exide) Pb monitoring site measured 0.46 ug/m3 as a 3 month rolling av erage. The Rehrig (Exide) monitoring location has been designated as a collocated monitoring location for th e source oriented Pb monitoring network along with the Los Angeles, and Riverside sites. Collocation requirements are shown in Table 24. Prev iously, the Long Beach (North) site was designated as a collocated site for Pb but on 9/30/2013 the lease was terminated at the owners request. The SCAQMD continue s to exceed the minimum monitoring requirements with the closure of the Long Beach (North) Pb site. The spatial distribution of these sites is shown in Figure 6 in Appendix A.

On November 12, 2008, the EPA issued final re visions to the NAAQS for Pb. Network design requirements included monitoring for so urces of Pb (source oriented monitoring) and urban Pb monitoring (non-source oriented). To meet this requirement, a source oriented site was established on January 1, 201 0 at the Van Nuys Airport and monitoring

continues at the site s surrounding the Exide (V ernon), Quemetco (Indus try), and the Trojan Battery facilities. Existing urban Pb mon itoring conducted at Compton, LAX Hastings, Los Angeles (Main), Pico Rivera, Rivers ide Magnolia, Rubidoux, San Bernardino, South Long Beach, and Upland exceed the minimum monitoring requirements.

The final rule for Pb went into effect on Ja nuary 26, 2011. In the final rule the Van Nuys Airport was no longer included on the list of ai rports where Pb monitoring was required, and a more recent emissions inventory showed Pb emissions less than 1 ton per year. The landowner advised SCAQMD the lease would not be renewed at the end of the three year contract period. Data review from the Van N uys Airport Pb site showed no exceedances of the three month rolling average during the mon itoring period. In cons ultation EPA the site was discontinued on June 4, 2013 based upon conditions cited in 40 CFR 58 Appendix D

4.5. Official notification of site closure for Va n Nuys is to be submitted to EPA separately

from the ANP.

Previous NEI data (2008) showed the Long B each Airport, Daugherty Field just over the requirement for Pb source monitoring at 1.02528004 tpy. Since then, the most recent data published (NEI 2011, http://www.epa.gov/ttnchie1 /net/2011inventory.html ) indicates Pb emissions have dropped below the requirement for Pb source monitoring at 0.80 tpy. As part of the MATES IV program, SCAQMD pl ans to conduct a preliminary study to determine the need for long term Pb source monitoring at the Long Beach Airport. A

determination will be made in consultation w ith EPA Region IX on the need for long term monitoring at the time of the 5 year network assessment in 2015.

Photochemical Assessment Monitoring Stations
The Photochemical Assessment Monitoring Sta tions (PAMS) network was initiated in June 1994 at Pico Rivera and Upland. During 1995 sites were establ ished at Banning and

### Air Quality Monitoring Ne twork Plan – July 2014

12 Azusa to determine speciated hydrocarbon O3 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 leas e. 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.

On October 17, 2006, the EPA issued fina l amendments to PAMS monitoring requirements in 40 CFR § 58. The changes made to the rule were to implement recommendations made by the PAMS workgr oup formed to assess the program. The workgroup recommended changes be made to s ite type and monitoring objectives. During September 2008, a report from the EPA PAMS network assessment project workgroup was issued. The objectives of the workgroup were to asse ss how well the current PAMS network was meeting monitoring objectives, de termine which sites are most useful for meeting objectives, identify poten tially redundant, ineffective, or unnecessary sites, and to assess other enhanced O3 monitoring activities that may prove useful.

To address regulatory change s, site-specific observations from the PAMS network assessment project, and potential synerg ies between programs , SCAQMD made the following changes in June 2009 to the PAMS monitoring network:

 Burbank was reclassified from Type 2/1 to Type 2. This change addressed the

National PAMS Network Assessment observati on that Burbank should be reclassified to a Type 2 precursor site. The recomm endation is consistent with the heavily urbanized/industrialized area, which is im pacted by high levels of O3 precursor

emissions.

 Santa Clarita was reclassified as Type 3 from Type 2. Although the National PAMS

Network Assessment observed that Santa Clar ita was consistent with a Type 2 site, recent data was more consistent with a Type 3 maximum O3 concen tration site rather than a Type 2 O3 precursor site.

 Banning was relocated to Los Angeles (Main). The National PAMS Network Assessment observed that Banning had the lowest O3 concentrations of all the Type 2

sites and should be reclassified to a Type 3 or 4 site. Instead, to create synergies between programs, SCAQMD relocated the Banning PAMS site to the Los Angeles (Main) site as Type 2. This satisfies the EPA recommendation for use of the same monitoring platform and equipment to meet the objectives of multiple programs. Los Angeles (Main) is also a National Ai r Toxics Trends St ation (NATTS), a National Core-Multi-pollutant Monitoring St ation (NCore), and a Speciation Trends Network (STN) site.

 Azusa was reclassified from Type 3 to T ype 2. This proposed change addresses the

National PAMS Network Assessment obs ervation that Azusa has high Volatile Organic Compounds (VOC) and Oxides of Nitrogen (NOX) concentrations, with lower O3 concentrations. The site now more closely resembles a Type 2 O3 precursor site.

### Air Quality Monitoring Ne twork Plan – July 2014

13  Upland was relocated to the Rubidoux site. The National PAMS Network Assessment observed that Upland was no longe r consistent with a Type 4 site and recommended reclassification to Type 3. SCAQMD relocated the Upland PAMS site to Rubidoux as a Type 3 location where s ynergies can be created among the NATTS, NCore, and the STN programs.

 LAX Hastings and Pico Ri vera remained unchanged.

Currently, manual VOC canisters are in opera tion at the Azusa, LAX Hastings, Rubidoux, Los Angeles (Main), and Santa Clarita air mon itoring 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 Octobe r 1 through June 30, twenty-four hour VOC canister samples are run every 6th day.

At Los Angeles (Main) and Santa Clarita ai r monitoring stations , during the intensive season from July 1 until September 30, carbony l samples are run every three hours for a period of twenty-four hours every 3rd day and a twenty-four hour samp le is run every 6th day. During the non-intensive season from October 1 through June 30, twenty-four hour carbonyl samples are run every 6th day.

Automated Gas Chromatography Flame Ionizatio n Detector (GC\FID) VOC systems are in operation at the Pico Rivera and Burbank ai r monitoring stations. During the intensive sampling season from July 1 until September 30, the GC\FID is run to collect daily 3-hour samples and twenty-four hour VOC canisters are run every 6th day. Like the other PAMS sites, carbonyl samples are run every three hours with on e additional tw enty-four hour sample run every 6th day. During the non-inte nsive season from October 1 through June 30, the GC/FID is idle and twenty-four hour VOC canister samples are run every 6th day and twenty-four hour carbonyl samples are r un every 6th day. Rubidoux is a collocated site for VOC canister sampling and Pico Rivera is a collocated site for VOC canister and carbonyl sampling.

During April 2010, a system audit was conduc ted by the EPA, which assessed the SCAQMD NATTS/PAMS programs. The audit found no major issues with the operation of the network but recommended implementati on of blanking and low level concentration challenge samples for the NATTS and PAMS programs. Blanking was implemented in June, 2010 and low level challenge samples we re implemented during October, 2010 and are completed annually.

The first SCAQMD upper air meteorological m onitoring station was established at Los Angeles International Airport (LAX) in 19 94. Subsequent upper ai r stations include Ontario International Airpor t (ONT) installed in 1996, More no Valley (MOV) installed in 2001 at the Moreno Valley Municipal Water Tr eatment Plant in Riverside County, Irvine (IRV) installed at the University of Califor nia Research and Extension Center in 2006, and Pacoima at Whiteman Airport (WHP) insta lled during May of 2007. The upper air

stations use a combination of remote sensi ng and surface meteorological instrumentation, including the Scintec (formerly Radian/URS and Vaisala) LAP-3000 radar wind profiler

### Air Quality Monitoring Ne twork Plan – July 2014

14 with a Radio Acoustic Sounding System (RAS S), the Atmospheric Systems Corporation (formerly AeroVironment Inc.) mini Sodar acoustic wind profile r, and tower-mounted meteorological measurements of wind, pressu re, temperature, relative humidity, solar radiation, and ultraviolet radi ation. Due to the age of th e LAX upper air instrumentation and costly component failures, SCAQMD has replaced the LAX radar wind profiler

instrumentation with that from Whiteman Ai rport. Surface meteorology and mini-Sodar instruments are still operational at th e Whiteman Airport upper air station.

The PAMS network monitoring objectives and requirements are summarized in Table 6, Table 23 and Figure 7 in Appendix A shows the distribution of the PAMS network.Air Quality Monitoring Network Plan – July 201415TABLE 6. PAMS NetworkJuly 1 to September 30October 1 to June 30SiteTypeDateEstablished asPAMSSite / AQS ID#VOCCarbonylVOCCarbonylAdditionalRequirements1 04/01/2004LAX Hastings(replacedHawthorne)8 x 3 hr samples every 3rdday and 1 x 24 hr sampleevery 6thdayNo Sampling1 x 24 hr sampleevery 6thdayNo Sampling2 06/01/1995 Azusa8 x 3 hr samples every 3rdday and 1 x 24 hoursample every 6thdayNo Sampling1 x 24 hr sampleevery 6thdayNo SamplingNo/NOx required2 07/01/1997 BurbankContinuous GC and 1 x24 hr sample every 6thday8 x 3 hr samples everyday and 1 x 24 hrsample every 6thday1 x 24 hr sampleevery 6thday1 x 24 hr sampleevery 6thday2 06/01/2009 Los Angeles (Main)8 x 3 hr samples every 3rdday and 1 x 24 hoursample every 6thday8 x 3 hr samples every3rdday and 1 x 24 hrsample every 6thday1 x 24 hr sampleevery 6thday1 x 24 hr sampleevery 6thdayTrace level CO requiredat one type 2 site.2 08/01/2005 Pico Rivera #2Continuous GC and 1 x24 hr sample every 6thday8 x 3 hr samples everyday and 1 x 24 hrsample every 6thday1 x 24 hr sampleevery 6thday1 x 24 hr sampleevery 6thday3 06/09/2009 Rubidoux8 x 3 hr samples every 3rdday and 1 x 24 hoursample every 6thdayNo Sampling1 x 24 hr sampleevery 6thdayNo Sampling NOy required3 05/01/2001 Santa Clarita8 x 3 hr samples every 3rdday and 1 x 24 hoursample every 6thday8 x 3 hr samples 3rddayand 1 x 24 hr sampleevery 6thday1 x 24 hr sampleevery 6thday1 x 24 hr sampleevery 6thdayMONITORING 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 and one other(type 1 or 3)2 – Maximum O3 precursor emissions impact site One type 2 site required per area Carbonyl only required in areas classified as seriousor above 8 hr zone3 – Maximum O3 concentration site No type 4 required NO/NOx required only at type 24 – Extreme downwind monitoring site NOy required at one site per PAMS area (type 1 or 3)

### Air Quality Monitoring Ne twork Plan – July 2014

16 PM2.5
A network of 17 FRM samplers was first implemented in January 1999. On December 26, 1999, a second Coachella Valley PM2.5 sampling s ite 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 starting date of each sampler is listed in Table 7. In March 2012, a change was made relocatin g the collocated PM2.5 monito r from Indio to the Mira Loma (Van Buren) site. This change was made following approval from EPA. Collocated sampling sites include Rubidoux, Central Los Ange les, and Mira Loma (Van Buren). Of the collocated sites, all three are located at sites which exceed Federal NAAQS as shown in Figure 9, and Appendix A, 2012 Air Quality Data Table (http://www.aqmd.gov/home/library/air-quality-d ata-studies/historical-data-by-year). Manual PM2.5 monitors are neighborhood sc ale and population exposure representing community wide air quality and multiple sites are listed as population exposure. Because all of SCAQMD is in non-attainment for PM2.5, mo st of the sites are in areas of poor air quality therefore multiple sites are listed as population exposure and high concentration. If a PM2.5 network modification were to be implemented for a site that was in exceedence of the PM2.5 NAAQS levels, SCAQMD would notify US EPA Region IX via written

communication. Public notice of network modifications occu rs as part of the annual network plan process which is stated in the an nual network plan. Al l sites in the Network using FRM samplers are suitable for comp arison against the a nnual PM2.5 NAAQS.

During April 2009, SCAQMD completed minor changes to the FRM monitoring schedule to enhance Federal Equiva lent Method (FEM) Beta Attenuation Monitor (BAM) comparisons. On April, 16th, 2009 the Burbank and Mira Loma (Van Buren) FRM samplers changed to daily sampling from th e 1-in-3 day schedule and the Azusa location changed from every day sampling to 1-in-3 day sampling. Daily design value sites are

shown in Table 17a as the Burbank and Mira Loma sites. These sites meet the minimum daily monitoring requirement and exceed the minimum NCore 1 in 3 requirement at the Rubidoux and Los Angeles (Main) s ites. The remaining sites a dhere to the 1 in 3 schedule with the exception of Big Bear which was a pproved at the inception of the PM2.5 program

as a 1 in 6 site. The Federal minimum m onitoring requirements for PM2.5 are being met and/or exceeded by the SCAQMD PM2.5 monitoring network.

On January 15, 2013 EPA issued the Final Rule for the Review of National Ambient Air Quality Standards for Particulate Matter. EPA revised the minimum requirements for PM2.5 monitoring by requiring PM2.5 monitors to be sited near roads in certain urban areas. EPA requires the collocation of one PM2.5 monitor with a near road NO2 monitor in urban areas having populations of 1 million or more. EPA is specifying that required monitors in 

### Core

Based Statistical Areas (CBSA) of 2.5 million or more persons be operational by January 1,

2015.

One near road PM2.5 monitoring site is required in each of the 

### Los Angeles-Long BeachSanta Ana MSA\CBSA (Code 31100) and th e Riverside-San Bernardino-Ontario MSA\CBSA (Code 40140) areas. Near road PM2.5 monitori ng is to be implemented

### Air Quality Monitoring Ne twork Plan – July 2014

17 concurrently with the near ro ad NO2 monitoring. The plan for the near road network is detailed in the section titled, “Recent or Proposed Modifications to Network.”

Continuous PM2.5 Met One BAMs were first de ployed in fiscal year 2001–02. Seventeen monitors are now operating in the SCAB, two at Rubidoux (FEM & Non FEM BAM), and one each at Anaheim, Los Angeles, South L ong Beach, Burbank, Mira Loma (Van Buren), and Banning sites. In January 2006, two addi tional samplers were a dded at Lake Elsinore and Glendora as part of the Children’s H ealth Study. As proposed in the 2008 network plan, FEM BAM monitors were deployed duri ng October 2008, at the Anaheim, Burbank, Long Beach (North), Los Angeles (Main), Mi ra Loma (Van Buren), Rubidoux, and South Long Beach sites. Relocated NON-FEM BAM samplers were installed at Reseda, Riverside Magnolia, Santa Clarita, Crest line, and Upland. A NON-FEM BAM was collocated with a FEM BAM at Rubidoux. An additional NON-FEM BAM sampler was deployed at Temecula during July, 2010. In 2011, all FEM BAMs have been reclassified from special purpose monitors to SLAMS under 40 CFR § 58.20. In 2013, SCAQMD conducted a PM2.5 Continuous Monitor Comparabili ty Assessment in accordance with the PM NAAQS rule published on January 15 th 

### , 2013 (78 FR 3086). Spec ific to the provisions detailed in §58.10 (b)(13) and §58 .11 (e), the assessment results indicate that all of the SCAQMD PM2.5 Continuous Monitors do not meet th e criteria to be co mpared against the NAAQS. Thus, SCAQMD requested a waiver to exclude PM2.5 continuous monitor data from NAAQS comparison. Meanwhile, SCAQMD is conducting comparison studies of newer technology to determine their ability to meet the criteria to be compared against the NAAQS. At such time when the assessment in dicates that the FEM monitors are within the acceptance criteria, then U.S. EPA will be notified of the results and the AQS parameters will be changed to indicate that th e data will be eligible for comparison to the NAAQS upon U.S. EPA approval.

Coarse particulate matter measurements (PM10-2.5) are required at NCore sites. To meet this requirement SCAQMD measures this valu e utilizing the continuous BAM monitors at the Los Angeles (Main) and Rubidoux air monito ring sites. These monitors are shown in

Table 4.

Where both 24 hour FRM PM2.5 samplers and FEM PM2.5 continuous analyzers are deployed together, they are si ted as collocated for data co mparison purposes if the FEM analyzer meets the acceptance criteria under 78 FR 3086.

### Air Quality Monitoring Ne twork Plan – July 2014

18 TABLE 7. Manual PM 2.5 

### 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 AZUS 70060 060370002 01/04/99 1-in-3
Big Bear BGBR 36001 060718001 02/08/99 1-in-6

Burbank BURK 70069 060371002 01/21/99 Daily
Compton COMP 70112 060371302 11/08 1-in-3

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

Indio INDI 33157 060652002 01/30/99 1-in-3
Long Beach ( North ) 1 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

Mira Loma (Van Buren) “A” MRLM 33165 060658005 11/09/05 Daily

Mira Loma (Van Buren) “B” MRLM 33165 060658005 03/08/12 1-in-6
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 Some pollutants were discontinued at Long Beach (N orth) on 9/30/2013 due to termination of lease



### FRM PM2.5 sampler remains the primary analyzer used for attainment purposes and continuous analyzers are desi gnated as audit samplers unless the primary 24 hour FRM

PM2.5 is offline then conti nuous FEM analyzer da ta can be substituted if the FEM analyzer meets the acceptance criteria under 78 FR 3086.

PM2.5 speciation sampling is also a part of the SCAQMD PM2.5 program. Collocated STN and one SCAQMD Met One SASS PM2.5 sample rs were deployed in March 2001 at Rubidoux. An additional STN and collocated SCAQMD SASS samplers were deployed at Central Los Angeles in 2002. In 2003, SC AQMD SASS PM2.5 speciation samplers were installed at Fontana and Anaheim air monitoring sites. Analysis of the filters from the ambient network SASS samplers are being conducted at SCAQMD’s laboratory. The STN filters are shipped to Research Triangle Instit ute (RTI) for analysis. This approach has the concurrence of CARB and EPA, Region IX.

On December 14, 2012 EPA revised NAAQS fo r PM2.5. As part of the revision EPA updated monitoring requirements for PM2.5 in cluding the addition of monitoring near heavily traveled roads in large urban areas. Specifically, EPA is requiring the collocation

of one PM2.5 monitor with a near road NO2 or CO monitor in urban areas having

### Air Quality Monitoring Ne twork Plan – July 2014

19 populations of 1 million or more. EPA is spec ifying that monitors required in CBSAs of 2.5 million or more persons are to be opera tional by January 1, 2015. One near road PM2.5 monitoring site is required in each of the Los Angeles-Long Beach-Anaheim, CA MSA\CBSA (Code 31080) and th e Riverside-San Bernardi no-Ontario MSA\CBSA (Code 40140) areas. Sites are tentat ively proposed on Route 60 in the City of Ontario and on Route 710 in the City of Long Beach. Both sites are to be operational by January 1, 2015.

National Air Toxics Trends Station (NATTS)

The NATTS program was developed to fulf ill the need for long-term Hazardous Air Pollutant (HAP) monitoring data of cons istent quality nationwide. SCAQMD has conducted several air toxics measurement camp aigns in the past, which demonstrated the variety and spatial distributi on of air toxics sources acro ss SCAB. A singl e air toxics

measurement site cannot reflect the levels a nd trends of air toxics throughout the SCAB. For this reason, two NATTS sites are used to characterize the SCAB’s air toxics levels. The first site is a central urban core site in Los Angeles that reflects concentrations and trends due primarily to urban mobile source emi ssions. A second, more ru ral, inland site at Rubidoux captures the transport of pollutant s 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 Los Angeles (Main) and Rubidoux air monitoring sites. During April 2010, a system audit was conducted by the EPA, which assessed the SCAQMD NATTS program. The audit found no major issues with the operation of the network but recommended implementation of blanking and low level concentration challenge samples for the NATTS and PAMS programs. Blanking was implemented in June, 2010 and low level challenge samples we re implemented during October, 2010 and completed annually.

NCore
NCore monitoring rules required that SCAQM D make NCore sites ope rational by January

1 st 

### , 2011. To meet this goal, SCAQMD insta lled trace level analyzers for CO, NOY and SO2 at the Rubidoux and Central Los Angeles sites. Continuous PM10 and PM2.5 BAM

are utilized for PM10-PM2.5 measurements at both sites. Final calibrations were completed at the Rubidoux site January, 2011 an d at the Central Los Angeles during May, 2011. Both the Los Angeles and Rubidoux sites are NATTS and PAMS monitoring

locations.



### Special Programs
Special monitoring programs are conducted for ru le compliance purposes, to characterize the

levels of toxic air contaminants and other criter ia pollutants in sub-regional areas or communities in the SCAB, or to support modeling and planning efforts. The following is a list of special monitoring programs that were activ e during the past year. Note th at this is being provided for informational purposes only.

MATES IV The SCAB is a highly urbanized area home to about seventeen million people who own and operate about eleven million motor vehi cles, and contains some of the highest

concentrations of industrial and commercial operations in the c ountry. In 1986, SCAQMD

### Air Quality Monitoring Ne twork Plan – July 2014

20 conducted the first MATES study to determine th e SCAB-wide risks associated with major airborne carcinogens. At the time, the state of technology was such that only ten known air toxic compounds could be analyzed. In 1998, a second MATES study (MATES II) was conducted; MATES II included a monitoring pr ogram of 40 known air toxic compounds, an updated emissions inventor y of toxic air contaminants , and a modeling effort to

characterize health risks from hazardous air pollutants. In April 2004, the SCAQMD conducted the third MATES study (MATES III) to assess the ambient levels of airborne compounds linked to adverse health effect s in humans. And in June, 2012 SCAQMD began the MATES IV study.

The MATES IV Study included a monitoring pr ogram, an updated emissions inventory of toxic air contaminants, and a modeling effort to characterize risk across the Basin. The Micro-Scale component of the study will contin ue to focus on the carcinogenic risk from exposure to air toxics but will not estimate mort ality or other health e ffects from particulate exposures. A focus of MATES IV is the inclus ion of measurements of ultrafine particle concentrations. In addition, shorter-term measurements ar e being conducted at various locations to assess localized impacts of combustion sources. The focus of these measurements will be on assessing the expos ures to ultrafine part icles and black carbon very near sources such as airports, freeway s, rail yards, busy intersections, and warehouse operations.

The goal of MATES IV is to enhance the spatial resolution of previous studies by characterizing the ambient concentration of selected toxic air co mpounds in communities with varying land-type usage, such as residential, industria l, and commercial, as well as gradients from source areas dow nwind to receptor areas.

For trend analysis the MATES IV study utilized the same te n fixed monitoring sites used in the MATES III study. These monitoring lo cations are the Anaheim, Burbank, Compton, Fontana, Huntington Park, North Long Beach, LA Main Street, Pico Rivera, Rubidoux, and West Long Beach monitoring sites. As of June 2013 monitoring at these ten fixed sites has been completed. MATES IV added Ultr a Fine Particulate (U FP) and Black Carbon (BC) continuous measurements.

The Micro-Scale component to the MATES IV study utilizes mobile monitoring platforms deployed for short term measurements of selected compounds near sources such as airports, freeways, rail yards, busy intersections, and warehouse operations.

Fugitive Dust Study In support of SCAQMD Rule 403 - Fugitive Du st, SSI PM10 samplers are deployed on an episodic basis upwind and downwind of poten tial sources as required under Rule 403. Since 2003, periodic sampling has been con ducted around gravel quarries and other industries which seem to be produc ing large volumes of dust.

Hexavalent Chrome The SCAQMD has an ongoing program to collect ambient hexavalent chromium samples in the vicinity of several chrome pla ting and cement production facilities located

### Air Quality Monitoring Ne twork Plan – July 2014

21 throughout the SCAB. Monitoring continues at Newport Beach, Riverside, and other locations throughout the SCAQMD jurisdiction.

College of the Desert

Because exceedances of the PM10 standard have been recorded at the Torres-Martinez (Indian Reservation) station, SCAQMD conduc ted an independent monitoring study to evaluate the spatial representativeness of such measurements. Continuous PM10 measurements were collected at “College of the Desert” in Mecca from December 2010 to May 2014. Currently the College of the Dese rt monitor is being relocated to a new Coachella Valley monitoring station located at Saul Martinez Elementary School in Mecca.

GERDAU-TAMCO GERDAU North America acquired the TAMC O Rancho Cucamonga steel mini mill in October, 2010. In 2012 Environ Corp. was retain ed to perform an e nvironmental audit and found discrepancies in reporte d emissions. Environ found th at SOx emissions were not accurately reported prior to 2011, NOx emissions were not accurately being measured and Pb emissions may contribute to an exceeden ce of the NAAQS. SCAQMD conducted inspections of the facility to address issues and continues monitoring for Pb, Cr+6, and other metals at the facility. If results of th e monitoring effort show TAMCO as a source of

Pb that could contribute to an exceedence of the NAAQS, it will be added to the source impact Pb monitoring network.

Salton Sea Monitoring On Sunday September 9, 2012, a strong thundersto rm over the Salton Sea caused odors to

be released and trans ported to the northwest, across the Coachella Valley and through the Banning Pass into the SCAB. The odors also cro ssed through the mountain passes west of the Salton Sea and into the Temecula Valley. The following day, SCAQMD received over 235 complaints of sulfur and rotten egg type odors

As the Salton Sea recedes, the potential exists for more of these larg e-scale odor events to occur. SCAQMD has installed air monitors at Saul Martinez Elemen tary School and the Imperial Irrigation District’s Torrez-Martinez s ite to monitor the type of expected nuisance pollutants which are released from the Sa lton Sea. The primary objective of this monitoring network is to place monitoring res ources at a lakeside location where peak hydrogen sulfide concentrations are expected to occur. The monitoring sites will provide data that can be used to assess populati on exposures in case of odor events and for comparison to the state standa rd for hydrogen sulfide.

As the Salton Sea is projected to recede, thes e sites could be enhanced for monitoring the predicted particulate matter (PM) emissions from the Salton Sea area that may influence

the South Coast Air Basin PM levels.

AllenCO

AllenCO is an oil field and gas production facility located in the City of Los Angeles surrounded by residences including low in come housing units, F.D. Lanterman high school, and Mount Saint Mary’s College. Fo r several years SCAQMD Inspectors have

### Air Quality Monitoring Ne twork Plan – July 2014

22 responded to numerous odor complaints from the local community and suspects Allen CO

to be the source of these odors. In Oct ober 2013 the SCAQMD initiated monitoring at

sites around the AllenCO facility. At Mt St Mary’s College regularly scheduled VOC samples are collected, and continuous Non- Methane Hydrocarbon measurements are also being collected. On the roof of the low in come housing building across the street from AllenCo, there is a remote controlled sample r capable of collecti ng a VOC grab sample should an odor complaint be called into th e SCAQMD odor complaint line. In November 2013 AllenCo temporarily shut down operations to repair issues which it believes were the cause of the previous odor complaints.



### Recent or Proposed Modifications to Network

Near Roadway NO2 Monitoring On February 9, 2010, U.S. EPA promulgated ne w minimum monitoring requirements for the NO2 monitoring network in support of newly revised 1-hour NO2 NAAQS and the retained annual NAAQS. In the new monitoring requirements , State and Local air monitoring agencies are required to install near-road NO2 monitoring stations at locations where peak hourly NO2 concentrations are expected to occur within the near-road environment in larger urban areas. On March 7, 2013 EPA revised the new monito ring requirements from the 2010 NO2 NAAQS revision, delaying implementation of the first phas e of the near road network to January 1, 2014 and the second phase to January 1, 2015. As pa rt of the implementation, State and local air agencies are required to consider traffic volum es, fleet mix, roadway design, traffic congestion patterns, local terrain or topography, and meteorology in determ ining where a required near-road NO2 monitor should be placed. In addition to t hose required considerations, there are other factors that impact the selection and implementation of a near-road monitoring station including satisfying siting criteria, site logistics (e.g., gaining access to property and safety), and population exposure.

The near roadway grant guidance directed implementation of near road sites be conducted in phases. The first of the Phase I sites became operational on January 1, 2014 in Anaheim adjacent to the 5 freeway (FE AADT #3, 2013). The Second Phase I site is located in Ontario adjacent to Interstate 10/Interstate 15 (FE A ADT #11, 2013) and is expected to be operational by July 1, 2014. Phase II sites are to be operati onal by January 1, 2015. Phase II sites are currently under consideration along Route 710 in Long B each (FE AADT 22, 2014) and along Route 60 in Ontario (FE AADT #9, 2014). Each phase consists of one site selected from each of the Los Angeles – Long Beach – Anaheim (Metropolitan St atistical Area (MSA) and the Riverside – San

Bernardino – Ontario MSAs.

The primary objective of the near-road NO2 netw ork is to place monitoring resources on nearroad locations where peak, ambient NO2 concentra tions are expected to occur as a result of onroad mobile source emissions. Monitoring at such a location or locations within a particular urban area will provide data that can be used for comparison to the NAAQS and to assess population exposures for those who live, work, pl ay, go to school, or commute within the nearroadway environment. Population density for SCAQMD is shown in Figure A. The near-road NO2 data will provide a clear means to determ ine whether or not the NAAQS is being met within the near-road environment throughout a pa rticular urban area. Since near-road NO2

### Air Quality Monitoring Ne twork Plan – July 2014

23 monitoring sites are to be placed at locations with expected peak NO2 concentrations, the target mobile sources and the roads they travel upon are ubiquitous throug hout urban areas, these monitoring data may be said to represent the relative worst case population exposures that may be occurring in the near-road environment throu ghout an urban area over the averaging times of

interest.

Minimum monitoring requirements are specified in 40 CFR 58 Appendix D. EPA requires state and local air agencies to operate one near-road NO2 monitor in each Core Based Statistical Area (CBSA) with a population of 500,000 or more pe rsons. Further, those CBSAs with 2,500,000 or more persons, or those CBSAs with one or more roadway segments carrying traffic volumes of 250,000 or more vehicles (as measured by annual average daily traffic [AADT] counts), shall have two near-road NO2 monitors. The pr ocess of identifying minimum monitoring requirements is shown in Figure B.

Figure A – SCAQMD Population Density

### Air Quality Monitoring Ne twork Plan – July 2014

24 The SCAQMD jurisdictional boundary enco mpasses two MSAs and two CBSAs whose

boundaries and codes mirror those of the MSAs as defined by the U.S. Office of Management and Budget. The Los Angeles-Long Beach -Anaheim MSA\CBSA (Code 31080) has an estimated population of 13,131,431 and the Ri verside-San Bernardino-Ontario MSA\CBSA (Code 40140) has an estimated population of 4,380,878 according to U.S. Census estimates for 2013. The minimum number of monitors requi red for near road monitoring is based on MSA\CBSA population and shown in Table 8. Figure B - Monitoring Requirements

### Air Quality Monitoring Ne twork Plan – July 2014

25 TABLE 8. Minimum Number of Moni tors Required Near Road NO2

The monitoring site selection pr ocess was in accordance with guidance published in the U.S. EPA Near Roadway NO2 Technica l Assistance Document (TAD) (June, 2012). The process for ranking candidate road segments is outlined in Figure C. CBSA Population

Estimate Highest

AADT

Segment Minimum Required Near

Road NO2 Sites 2014 Minimum Required Near

Road NO2 Sites 2015

31080 13,131,431 396,000 1 1

40140 4,380,878 245,300 1 1



### Figure C – Ranking Candidate Road Segments

### Air Quality Monitoring Ne twork Plan – July 2014

26 The candidate road segment ranking proc ess incorporated the following EPA TAD

considerations:

FE AADT – A s ingle metric to compare road segments, accounting for AADT and fleet mix (Heavy Duty Vehicles). The 

### Fleet-Equivalent AADT value for each ro ad segment is calculated by the following formula:

(FE) AADT = (AADT – HDc) + (HDm * HDc)

Where AADT is the total traffic volume count for a particular road segment, HDc is the total number of heavy-duty vehicles for a particular road segment, and HDm is a multiplier that represents the heavy-duty to li ght-duty NOx emission ratio for a pa rticular road segment. An

HDm of 17 was used instead of the default nationa l average of 10 based on emissions inventories within the SCAQMD jurisdiction (Air Quality Management Plan, Sout h Coast Air Quality Management District, 2012). The top 50 FE AADT segment candidates ar e calculated based on the latest (2012) California Depart ment of Transportation AADT counts ( http://trafficcounts.dot.ca.gov/ ) and are shown in Table 9.Air Quality Monitoring Network Plan – July 201427TABLE 9. Top Fifty FE AADTCandidate Roadway SegmentsFEADDTRankHDRankAADTRankFEAADTAADTTotalTotalTrucks(HD)TotalTruck%CountyPostmileRouteDescription1 15 4 754464 348000 25404 7.3 LA 23.56 60 DIAMOND BAR, JCT. RTE. 572 1 59 705536 260000 27846 10.71 LA 9.612 605 SANTA FE SPRINGS, JCT. 53 2 66 691976 255000 27311 10.71 LA 13.569 605 WHITTIER, JCT. RTE. 724 41 3 680560 362000 19910 5.5 ORA 34 5 SANTA ANA, JCT. RTES. 22 & 575 5 72 678400 250000 26775 10.71 LA 17.407 605 INDUSTRY, JCT. RTE. 606 14 45 674576 266000 25536 9.6 ORA 38.915 5 LINCOLN AVENUE7 24 20 669968 292000 23623 8.09 LA 7.653 605 NORWALK, JCT. RTE. 1058 16 50 669504 264000 25344 9.6 ORA 36.258 5 KATELLA AVENUE9 3 117 656768 222000 27173 12.24 SBD 4.58 60 ONTARIO, JCT. RTE. 8310 4 118 653800 221000 27050 12.24 SBD 2.366 60 CENTRAL AVENUE11 17 78 646804 245300 25094 10.23 SBD 9.936 10 ONTARIO, JCT. RTE. 1512 18 79 646804 245300 25094 10.23 SBD 11.132 10 ETIWANDA AVENUE13 22 67 638048 254000 24003 9.45 LA 11.711 60 INDUSTRY, JCT. RTE. 60514 8 120 636424 217000 26214 12.08 SBD 0 60 LOS ANGELES/SAN BERNARINO COUNTY LINE15 23 64 635304 257000 23644 9.2 ORA 5.258 91 ANAHEIM, STATE COLLEGE BLVD16 10 121 633488 216000 26093 12.08 LA 29.39260 POMONA, JCT. RTE. 71,17 28 31 627616 278000 21851 7.86 LA 44.0145 LOS ANGELES, JCT. RTE. 21018 11 125 625736 215000 25671 11.94 SBD 5.855 60 GROVE AVENUE19 19 109 623760 226000 24860 11 SBD 24.24 10 COLTON, JCT. RTE. 21520 20 105 621920 230000 24495 10.65 LA 20.428 60 ROWLAND HEIGHTS,21 52 5 620400 330000 18150 5.5 ORA 30.263 5 TUSTIN, JCT. RTE. 55,22 6 165 619008 192000 26688 13.9 LA 12.97 710LONG BEACH, JCT. RTE. 9123 34 27 613312 280000 20832 7.44 LA 36.3585 LOS ANGELES, JCT. RTE. 17024 25 85 608520 243800 22795 9.35 ORA 42.1 5 FULLERTON, JCT. RTE. 9125 31 51 605296 264000 21331 8.08 ORA 2.615 91 BUENA PARK, JCT. RTE. 39 BEACH BLVDAir Quality Monitoring Network Plan – July 201428TABLE 9 (continued). Top Fifty FEAADT Candidate Roadway SegmentsFEADDTRankHDRankAADTRankFEAADTAADTTotalTotalTrucks(HD)TotalTruck%CountyPostmileRouteDescription2613 161 603728 194000 25608 13.2 SBD 27.296 10 MOUNTAIN VIEW AVENUE279 175 602640 184000 26165 14.22 LA 10.823 710 LONG BEACH, DEL AMO2836 40 599456 268000 20716 7.73 LA 13.094 91 LONG BEACH, CHERRY2935 43 598936 267000 20746 7.77 LA 39.361 5LOS ANGELES, JCT. RTE. 1183061 8 591552 316000 17222 5.45 LA 17.17 101LOS ANGELES, JCT. RTE. 4053138 52 590512 264000 20407 7.73 LA 11.681 91LONG BEACH, JCT. RTE. 7103212 179 588112 178000 25632 14.4 LA 9.41 710 LONG BEACH, JCT. RTE. 4053340 55 586048 262000 20253 7.73 LA 14.618 91 BELLFLOWER, JCT. RTE. 193447 38 583128 273000 19383 7.1 ORA 3.258 91 FULLERTON, HARBOR3527 112 577376 224000 22086 9.86 LA 25.464 60 DIAMOND BAR, JCT. RTE. 57 NORTH3644 60 573248 260000 19578 7.53 LA 9.87 110LOS ANGELES, JCT. RTE. 913765 22 560512 290000 16907 5.83 LA 5.046 605 CERRITOS, JCT. RTE. 913851 54 560088 263000 18568 7.06 LA 36.41 210 DUARTE, JCT. RTE. 605,3974 16 559736 299000 16296 5.45 LA 19.99 101 ENCINO AVENUE40107 1 558700 377500 11325 3 ORA 20.751 405 JCT. RTE. 22 EAST,4129 139 555744 210000 21609 10.29 SBD 13.16910 FONTANA, CHERRY AVENUE4296 7 552120 321000 14445 4.5 ORA 9.187 91 JCT. RTE. 55 SOUTH4363 32 551104 278000 17069 6.14 ORA 15.6 57 ANAHEIM, JCT. RTE. 91,4432 128 549552 214000 20972 9.8 LA 20.189 605 BALDWIN PARK, JCT. 1045108 2 547600 370000 11100 3 ORA 24.044 405 SEAL BEACH, JCT. RTE. 6054690 14 545400 303000 15150 5 ORA 11.54 91 PERALTA, JCT. RTE. 904767 36 544728 275000 16858 6.13 LA 41.597 5LOS ANGELES, JCT. RTE. 4054821 200 544360 155000 24335 15.7 RIV 0.491 60 JCT. RTE. 154926 174 541076 185300 22236 12 SBD 29.313 10 ALABAMA STREET OC5043 111 539288 225000 19643 8.73 LA 15.692 710LYNWOOD, JCT. RTE. 105

### Air Quality Monitoring Ne twork Plan – July 2014

29 The process of ranking the roadway segments bega n with creating a scori ng matrix incorporating EPA TAD considerations. The scoring matrix was us ed as a tool to determine the most suitable location for monitoring by inco rporating traffic data a nd quantifying station siting considerations. FE AADT was weighted a factor of five due to the major role traffic influences near roadway monitoring. Other important f actors such as roadway design, distance from roadway, meteorology, roadside structures and terrain were taken into consideration and weighted a factor of one each and are defined as follows:

Roadway Design – Considers monitor placement and can affect pollutant transport and dispersion. The most desirable attributes include a monitori ng location at grade with the surrounding terrain and roadway. The least desi rable attributes include deep cut-sections significantly below grade or significantly above grade.

Distance from Roadway - Per 40 CFR Part 58 Appendix E: the site should be “As near as practicable to the outside nearest edge of the traf fic lanes of the target road segment; but shall not be located at a distance greater than 50 meters, in the horizontal, from the outside nearest edge of the traffic lanes of the target road segment.” The TAD recommends the target distance for nearroad NO2 monitor probes be w ithin 20 meters of the target road whenever possible.

Meteorology – Can affect pollution transport and disper sion. The most desirable location is

relative downwind locations – winds from road to m onitor. The least desira ble locations are sites upwind of the target road.

Roadside Structures – Considers monitor placement and can affect pollutant transport and dispersion. The most desirable monitoring location will have no barriers present other than low (< 2m in height) safety barriers or guard rails. The least desirable attributes include the presence of sound walls, mature vegetation (high and thick) or obstructive buildings.

Terrain – Can affect pollutant dispersion and local atmospheric stability. The most desirable terrain is flat or gentle terrain, within a valley, or along road grade. The least desirable terrain is along mountain ridges or peaks, hillsides, or other naturally windswept areas.

A scale normalized to 5 was used to rank each ca ndidate segment; the scoring matrix is shown as

Table 10.

### Air Quality Monitoring Ne twork Plan – July 2014

30 TABLE 10. Candidate Segment Scoring Matrix

Score 5 3 1 0

FE AADT (Weighted 5x) Traffic count of the highest ranked FE

AADT Normalized to the highest ranked FE

AADT Normalized to the highest ranked FE

AADT N/A

Roadway Design At same elevation Slightly higher

elevation Below grade / Under overpass / On bridge Design prevents access

or accurate representation of roadway.

Distance from Roadway Less than or equal to

20 m Normalized distance

from 20 m to 50 m 50 m from roadway >50 m

Meteorology (predominant wind direction) Downwind Parallel Upwind N/A

Roadside Structures No barriers ( < 2 m) Some obstruction (small sound barriers sparse low vegetation) Major obstruction (large sound walls, buildings). Completely blocked

Terrain Flat / mildly sloping Uneven Mountain ridges, Canyons Terrain prevents access

or accurate representation of roadway Weighting Values

FE AADT 5 Roadway Design 1 Distance from Roadway 1 Meteorology 1

Roadside Structures 1

Terrain 1



### The top FE AADT sites were surveyed and ranked according to the scori ng matrix. Some sites had several locations within the road segmen t to consider and each location was scored individually as a sub-site. The results are shown for the Los Angeles-Long Beach-Anaheim MSA\CBSA (Code 31080) and th e Riverside-San Bernardino- Ontario MSA\CBSA (Code 40140) in Tables 11 and 12.Air Quality Monitoring Network Plan – July 201431TABLE 11. Los Angeles-LongBeach-Santa Ana MSA\CBSALocationState CollegeBlvd./Route91 AnaheimRoute710/91Long BeachFE AADT Rank15 22FE AADT635,304 619,008HD Rank23 6HD23,644 26,668AADT Rank64 165AADT257,000 192,000Site1A 1B 1C 2A 2B 3A 3B 4A 4B 5A 5B 5C 5D 6A 6B 7A 7B 8A 8B 8C 13A 13B 13C 13D 15A 22AFE AADT Score 5.00 5.00 5.00 4.68 4.68 4.59 4.59 4.51 4.51 4.50 4.50 4.50 4.50 4.47 4.47 4.44 4.44 4.44 4.44 4.44 4.23 4.23 4.23 4.23 4.21 4.10Roadway Design 4.5 4.0 5.0 4.5 4.5 3.0 5.0 4.0 5.0 5.0 2.0 2.0 4.0 4.0 5.0 1.0 2.0 3.0 3.0 1.0 5.0 2.0 2.0 4.0 1.0 5.0Distance fromRoadway 5.0 5.0 5.0 5.0 2.5 4.0 4.0 1.2 3.6 4.0 3.6 2.6 3.3 3.7 5.0 2.2 0.0 0.0 3.2 2.5 4.0 3.6 2.6 3.3 3.2 5.0Meteorology 5.0 5.0 1.0 1.0 1.0 3.0 3.5 1.0 3.5 1.0 2.5 5.0 3.0 5.0 5.0 3.0 4.0 4.0 4.0 4.0 1.0 2.5 5.0 3.0 4.0 5.0Roadside Structures 4.0 4.0 1.0 3.0 5.0 3.0 4.0 4.0 4.0 4.0 1.0 1.0 1.0 5.0 5.0 1.0 1.0 2.5 2.5 2.5 4.0 1.0 1.0 1.0 1.0 5.0Terrain 3.5 4.0 4.0 4.0 3.0 2.0 5.0 4.0 5.0 5.0 2.0 2.0 3.5 3.0 5.0 4.0 4.0 3.0 3.0 3.0 5.0 2.0 2.0 3.5 3.0 5.0Sum (Out of 50) 4.70 4.70 4.10 4.09 3.94 3.79 4.44 3.68 4.36 4.15 3.36 3.51 3.73 4.31 4.74 3.34 3.32 3.47 3.79 3.52 4.01 3.22 3.38 3.60 3.32 4.55Overall Ranking2 2 8 9 11 12 4 14 5 7 20 17 13 6 1 21 22 18 12 16 10 23 19 15 22 3250,000 266,000 292,000 264,000 254,00072 45 20 50 6726,775 25,536 23,623 25,344 24,003674,576 669,968 669,504 638,0485 14 24 16 22678,400348,000Route5/605Santa FeSpringsRoute605/72WhittierRoute5/22/57Orange705,536 691,976 680,560Route 57/60Diamond Bar1754,4641525,40442 34Route 605/60 City ofIndustryRoute5/LincolnAnaheimRoute605/105Norwalk5 67Route 5/KatellaAnaheimRoute 60/605 Cityof Industry8 13260,000 255,000 362,00059 66 31 2 4127,846 27,311 19,910Air Quality Monitoring Network Plan – July 201432TABLE 12. Riverside-San Bernardino-Ontario MSA\CBSALocationRoute 60/83OntarioRoute10/EtiwandaOntarioRoute 60 LA/SBCounty LineChinoRoute 60/71PomonaGrove Ave/Route60 OntarioFE AADT Rank 9 12 14 16 18FE AADT 656,768 646,804 636,424 633,488 625,736HD Rank 3 18 8 10 11HD 27,173 25,094 26,214 26,093 25,671AADT Rank 117 79 120 121 125AADT222,000 245,300 217,000 216,000 215,000Site9A 10A 10B 10C 11A 11B 12A 14A 16A 18AFE AADT Score 4.35 4.33 4.33 4.33 4.29 4.29 4.29 4.22 4.20 4.15Roadway Design 3.0 2.0 2.0 2.0 4.0 3.0 5.0 1.0 1.0 3.0Distance from Roadway 2.0 3.3 3.3 4.0 0.0 1.7 5.0 2.6 4.0 4.5Meteorology 3.5 2.5 2.5 3.0 3.0 4.0 5.0 3.0 3.0 4.0Roadside Structures 2.5 3.0 4.0 3.0 5.0 1.0 5.0 3.0 1.0 4.0Terrain 3.5 2.0 4.0 4.0 4.0 2.0 5.0 3.0 3.0 4.0Sum (Out of 50) 3.63 3.45 3.75 3.77 3.74 3.31 4.64 3.37 3.30 4.03Ranking6 7 4 3 5 9 1 8 10 2221,000 245,3004 1727,050 25,094118 78Route 60/CentralChinoRoute 10/15Ontario10 11653,800 646,804

### Air Quality Monitoring Ne twork Plan – July 2014

33 Level of Service (congestion) data is considered to differentiate between two comparatively ranked segments as part of the site selection process. Tabl es 13, 14 and 15 show the top congested freeways in the Los Angeles, Oran ge, and the Riverside-San Bernardino-Ontario MSA\CBSA for 2012. As reported by the Calif ornia Department of Transportation ( http://www.dot.ca.gov/hq/tra ffops/sysmgtpl/MPR/index.htm ).

TABLE 13. Top Congested Freeways Los Angeles County

TABLE 14. Top Congested Freeways Orange County

### Air Quality Monitoring Ne twork Plan – July 2014

34 TABLE 15. Top Congested Freeways Riverside & San Bernardino Counties

On June 19, 2014, an Annual Network Plan Workshop was conducted at SCAQMD’s Diamond Bar office. Information regarding the workshop can be found at the SCAQMD website. SCAQMD staff presented and held a discussion on SCAQMD’s progress and announced the first

two sites at the Anaheim and the Ontario near ro ad monitoring locations and proposed additional sites at Route 710 in Long Beach and Route 60 in Ontario. Written comments were received in 2013 by the National Defense Resources Council (N RDC) regarding support for placing a site along the 710 freeway for a Los Angeles-Long Beach-Anaheim CBSA near road monitoring

location.

Sites are selected based on th eir ranking in the scoring matr ix however there are other

considerations involved in the site selection process. Th ese considerations include:

Safety

- Near-road monitoring sites must be accessible to station operators in a safe and legal manner, and not pose safety hazards to drivers, pede strians, or nearby residents. Safety hazards to monitoring site operators include factors which inhibit the safe entrance to or egress from a site and factors that could allow vehicles to encroach upon and damage the site infrastructure.



### Accessibility – ability to access the desired location from the property ow ner or ability to obtain a right of way permit.

Infrastructure – availability of power and data connection at the site.

The projected timeline for installation and operati on of the near roadway monitoring sites is as

follows:

Date Activity January 1, 2014 NO2 Monitoring began at Anaheim near road monitoring

site.

### Air Quality Monitoring Ne twork Plan – July 2014

35 May 1, 2014 Identify location of phase 2 monitoring sites; considering required factors prescribed in 40 CFR Part 58 Appendix D and Near Roadway NO2 Tec hnical Assistance Document along with logistics and availa bility of space at candidate

sites.

June 19, 2014 Annual Network Plan Workshop to discuss the Draft 2014
Annual Network Plan and to discuss proposed locations
along Route 710 in Long Beach and Route 60 in Ontario.

July 1, 2014 Begin NO2 monitoring at Ontario Etiwanda near road monitoring site.

July, 2014 Obtain permission/permits from respective landowners for additional proposed sites. Estimated June, 2014.

August, 2014 Survey site with construction manager.

Purchase equipment for monitoring sites. Estimated three months from receipt of grant award.

November, 2014 Site preparation comp letion – installation of building, foundation, fencing, barriers, me teorological tower, utility and phone lines at proposed sites.

December, 2014 Installation of CO at Ontario Etiwanda and Anaheim near road sites, installation of NO2 and PM2.5 at proposed Route 710 and Route 60 locations, conditioning, calibration and official startup date by January 1, 2015.

Van Nuys Pb Monitoring Site On November 12, 2008, the EPA issued final revi sions to the NAAQS for Pb. Network design requirements included monitoring for sources of Pb (source oriented monitoring) and urban Pb monitoring (non-source oriented). To meet this requirement, a source oriented site was established on January 1, 2010 at the Va n Nuys Airport. The final rule for Pb went into effect on January 26, 2011. In the final rule the Van Nuys Airport was no longer included on the list of airports where Pb monitoring was required, and th e most recent emissions inventory showed Pb emissions less than 1 ton per year. The lando wner advised SCAQMD the lease would not be renewed at the end of the three year contract pe riod. Data review from the Van Nuys Airport Pb

site showed no exceedances of the three month ro lling average during the monitoring period. In

consultation EPA the site was discontinued on June 4, 2013 based upon conditions cited in 40 CFR 58 Appendix D 4.5. Written c onfirmation of site closure to EPA will follow separately

from ANP.

### Air Quality Monitoring Ne twork Plan – July 2014

36 Sulfate Monitoring SCAQMD has been monitoring TSP sulfate data at the Azusa, Fontana, Pasadena, and West Los Angeles monitoring since the in ception of the monitoring site s. In 2003, ARB revised the sulfates monitoring method and standard by de leting the TSP sulfates method, ARB method MLD 033, and replaced it with the existing ARB method and creating a new standard for PM10 sulfates, ARB method MLD 007. ARB conducted a comparison of SCAQMD PM10 and TSP sulfate data for 1999 though 2010 and found good co rrelation between the two methods. TSP

sulfate data was reviewed in consultation with EPA and ARB who determined the need did not exist for continued TSP sulfate monitoring and a waiver was not necessary since the rule no longer exists. TSP sulfate monitors were remove d from the Pasadena and West LA monitoring sites early 2013. The TSP sulfate monitors were removed from the Azusa and Fontana sites in
June, 2013.

Crestline SCAQMD has been operating the Crestline site sin ce 1973. The deteriorating state of the shelter along with compromises made to the siting criteria due to obstructions has made it a candidate for site improvement. As part of regular air mon itoring station maintenance, a new station shelter has been outfitted to replace the ex isting trailer during October, 2014.

West LA SCAQMD has been operating the West LA site sin ce 1983. The deterioratin g state of the shelter along with compromises made to the siting criteria due to obstructions has made it a candidate for site improvement. As part of regular air mon itoring station maintenance, a new station shelter has been outfitted to replace the existing trailer during FY 2014-15.

Riverside Magnolia SCAQMD has been operating the Riverside Magnolia site since 1972. The deteriorating state of the building along with compromises made to the si ting criteria due to obst ructions has made it a candidate for site relocation. SCAQMD in c onsultation with EPA Region IX has located a

candidate site for relocation with in one mile of the current location. Once established, a data comparison is proposed to place to assess that data is representative for the area.

South Long Beach SCAQMD has been operating the South Long B each station as part of the ambient airmonitoring network. Recent cons truction of the buildings adjacent to our air monitoring equipment compromises the siting criteria. Du ring the FY 2014-15 a data comparison between a more centralized monitoring location in Long Beach will be undertaken. If comparison of data

between the two locations demonstrates some co mparability, or if the metropolitan site shows consistently higher levels of PM, the South L ong Beach site may be relocated in consultation with EPA Region IX.

Long Beach (Hudson) The Long Beach (Hudson) site was added as part of the MATES IV study. As part of the action to provide enhanced coverage, the Long Beach (H udson) site will remain in operation collecting Ozone, Carbon Monoxide, Nitrogen Di oxide, Sulfur Dioxide, and part iculate data to represent the Long Beach area.

### Air Quality Monitoring Ne twork Plan – July 2014

37 Long Beach (North) At the request of the owner, the Long Beach (N orth) site lease was terminated on September 30, 2013. As a result some pollutants were discon tinued while a replacement site is sought. Consideration is being given to consolidation with nearby sites to better represent the Long

Beach area and will be addressed in the 5 year network assessment.



### Minimum Monitoring Requirements

The SCAQMD jurisdictional boundary enco mpasses two MSAs and two CBSAs whose

boundaries and codes mirror those of the MSAs as defined by the U.S. Office of Management and Budget. Los Angeles-Long Beach-Anahe im MSA\CBSA (Code 31080) has an estimated population of 13,131,431 and the Riverside-San Bernardino-Ontario MSA\CBSA (Code 40140) has an estimated population of 4,380,878 according to U.S. Census estimates for 2013. The

minimum number of monitors for each pollutant is based on MS A population as described in 40 CFR § 58 Appendix D. The SCAQMD is a Pr imary Quality Assurance Organization (PQAO) and the network exceeds the minimum monitoring requirements for all criteria pollutants. Details are provided below.Air Quality Monitoring Network Plan – July 201438Table 16 Minimum Monitoring Requirements for Ozone.(Note: Refer to section 4.1 and TableD-2 of Appendix D of 40 CFR Part 58.)MSACountiesPopulation andCensus Year8-hr DesignValue (ppb) DV,Years1Design Value Site(name AQS ID0MonitorsRequiredMonitorsActiveMonitorsNeeded30180Los AngelesOrange13,131,431201399,2011-2013Santa Clarita0603760124 17 040140San BernardinoRiverside4,380,8782013107,2011-2013Redlands0607140033 13 01DV Years – The three years over which the design value was calculated.Monitors required for SIP or Maintenance Plan: 30Table 17a Minimum Monitoring Requirements for PM2.5 SLAMS (FRM/FEM/ARM)(Note: Refer to sections 4.71, 4.72, and Table D-5 of Appendix D of 40 CFR Part 58.)MSACountiesPopulationand CensusYearAnnualDesignValue[ug/m3],DV &Years1AnnualDesignValue Site(Name,AQS ID)DailyDesignValue[ug/m3],DV &yearsDailyDesignValue site(nameAQS ID)#RequiredSLAMSMonitors# ActiveSLAMSMonitors#AdditionalSLAMSneeded30180Los AngelesOrange13,131,431201312.20,2011-2013Burbank06037100230.8,2011-2013LosAngeles0603711033 11 040140San BernardinoRiverside4,380,878201314.86,2011-2013Mira Loma06065800536.6,2011-2013Mira Loma0606580053 9 01DV Years – The three years over which the design value was calculated.Monitors required for SIP or Maintenance Plan: 20Air Quality Monitoring Network Plan – July 201439Table 17b Minimum Monitoring Requirementsfor Continuous PM2.5 Monitors (FEM andNon-FEM)*(FEM/ARM and non-FEM see 40 CFR58 Appendix D Section 4.72.)MSACountiesPopulationand CensusYearAnnualDesignValue[ug/m3],DV &Years1AnnualDesignValue Site(Name,AQS ID)DailyDesignValue[ug/m3],DV &yearsDaily DesignValue site(name AQSID)# RequiredContinuousMonitors# ActiveContinuousMonitors#AdditionalContinuousneeded30180Los AngelesOrange13,131,431201319.73,2011-2013Los Angeles06037110345.9,2011-2013Los Angeles06037110324-FEM3-Non FEM040140SanBernardinoRiverside4,380,878201320.47,2011-2013Mira Loma06065800543.0,2011-2013Mira Loma06065800522-FEM6-Non FEM01DV Years – The three years over which the design value was calculated.Monitors required for SIP or Maintenance Plan: 15*Currently all active continuous monitors donot meet acceptance criteria under 78 FR 3086 and is requested to not be comparedto the NAAQS.Table 17c Minimum Monitoring Requirements for Speciated PM2.5 Monitors(Note: Refer to sections 4.74 of Appendix D of 40 CFR Part 58.)MSACountiesPopulationand CensusYearMonitorsRequired1MonitorsActiveMonitorsNeeded30180Los AngelesOrange13,131,43120131 2 040140SanBernardinoRiverside4,380,87820131 2 01Sites designated as part of the PM2.5Speciation Trends Network (STN).Monitors required for SIP or Maintenance Plan: 4Air Quality Monitoring Network Plan – July 201440Table18 Minimum Monitoring Requirements for PM10(Note: Refer to section 4.6 and TableD-4 of Appendix D of 40 CFR Part 58.)MSACountiesPopulation andCensus Year2013 MaxConcentration[ug/m3]MaxConcentrationsite (name AQSID)# RequiredMonitors# ActiveMonitors# AdditionalMonitorsNeeded30180Los AngelesOrange13,131,431201377Anaheim0605900074-8Med Conc9 040140SanBernardinoRiverside4,380,87820131471Mira Loma0606580056-10High Conc12 0Monitors required for SIP or Maintenance Plan: 211Excluding high concentration at Indio (159 ug/m3, on 8/23/2013.)Table 19 Minimum Monitoring Requirements for NO2(Note: Refer to section 4.3 ofAppendix D of 40 CFR Part 58.)CBSAPopulation andCensus YearMaxAADTCounts(2012)1# RequiredNear RoadMonitors2#ActiveNear RoadMonitors3#AdditionalNear RoadMonitorsNeeded4#RequiredArea WideMonitors#ActiveAreaWideMonitors#AdditionalArea wideMonitorsNeeded3018013,131,4312013396,000,20121 1 0 1 16 0401404,380,8782013245,300,20121 1 0 1 9 01Max AADT Counts – 2012 is the latestdata available from CA DOT2Two required beginning January 1, 2014.3Two required sites to be active by January1, 2014. See schedule in Recent or Proposed Changes to Network, Near RoadMonitoring.4One additional site per CBSA to be active by January 1, 2015.See schedule in Recent or Proposed Changes to Network, NearRoad Monitoring.Monitors required for SIP or Maintenance Plan: 15Monitors Required for PAMS: 7EPA Regional Administrator-required monitors per 40 CFR 58, Appendix D 4.3.4: 3Air Quality Monitoring Network Plan – July 201441Table 20 Minimum Monitoring Requirements for SO2(Note: Refer to section 4.4 ofAppendix D of 40 CFR Part 58.)CBSACountiesTotal SO21[tons/year]Population Weighted EmissionsIndex2[million persons-tons per year]#ActiveNear RoadMonitors#RequiredAreaWideMonitors#ActiveAreaWideMonitors#AdditionalArea wideMonitorsNeeded30180Los AngelesOrange6128.19201380,472 0 1 5 040140SanBernardinoRiverside2316.73201310,149 0 1 2 01Using latest NEI data 2011, available on EPA website: http://www.epa.gov/ttn/chief/net/2011inventory.html2Calculated by multiplying CBSA population and total SO2 and dividing product by one million.Monitors required for SIP or Maintenance Plan: 7EPA Regional Administrator-required monitors per 40 CFR 58, Appendix D 4.4.3: 0Table 21 Minimum Monitoring Requirements for CO(Note: Refer to section 4.2 ofAppendix D of 40 CFR Part 58.)CBSAPopulationand CensusYear#RequiredNear RoadMonitors1#ActiveNearRoadMonitors2#RequiredAreaWideMonitors#ActiveAreaWideMonitors3018013,131,43120130 0 0 17401404,380,87820130 0 0 81Required beginning January 1, 20152Required sites to be active by January 1, 2015; tobe collocated with near road NO2 sites.Monitors required for SIP or Maintenance Plan: 25EPA Regional Administrator-required monitors per 40 CFR 58, Appendix D 4.4.2: 0Table 22a Minimum MonitoringRequirements for Pb at NCore(Note: Refer to section 4.5 ofAppendix D of 40 CFR Part 58.)NCore Site(name, AQS ID)CBSAPopulation andCensus Year# RequiredMonitors# Active Monitors# AdditionalMonitors NeededLos Angeles (Main Street)0603711033018013,131,43120131 1 0Rubidoux060658001401404,380,87820131 1 0Air Quality Monitoring Network Plan – July 201442Table 22b Source Oriented Pb Monitoring (Including Airports)(Note: Refer to section 4.5 ofAppendix D of 40 CFR Part 58.)1Consider data frompast three years.2Datafound athttp://www.epa.gov/ttn/chief/net/2011inventory.html(5/1/2014)Monitors Required for SIP or Maintenance Plan: 5EPA Regional Administrator required monitorsper 40 CFR 58, Appendix D 4.5(C) c: 0Table 22c Minimum Monitoring Requirementsfor Pb, Non Source, Non NCore Monitoring(Note: Refer to section 4.5 ofAppendix D of 40 CFR Part 58.)1DV Years – The three years over which the design value was calculated.CBSAPopulation andCensus YearAnnual DesignValue [ug/m3], DV& Years1# Required AreaWide Monitors# Active Area WideMonitors# AdditionalMonitors Needed3018013,131,43120130.01,2011-20130 5 0401404,380,87820130.01,2011-20130 3 0Source Name AddressPb Emissions1(tons per year)Emission InventorySource2and Data YearMax 3-Month DesignValue1[ug/m3]Design ValueDate(third month,year)# RequiredMonitors# ActiveMonitors# AdditionalMonitors NeededLong Beach AirportDaugherty Field4100 E Donald DouglasDr, Long Beach, CA908080.8 NEI 2011 Unavailable UnavailablePending5yearassessment0 1Van Nuys Airport16461 Sherman Way, VanNuys, CA 914060.68 NEI 2011 0.06 7; 201200 0TAMCO12459-B Arrow Route,Rancho Cucamonga, CA917390.42 NEI 2011 Unavailable Unavailable01 0Exide Technologies2700 S Indiana St, Vernon,CA 900580.1 NEI 2011 0.46 7; 201112 0Trojan Battery9440 Ann St., Santa FeSprings, CA 906700.00556 NEI 2011 0.11 4; 201101 0Quemetco Inc.720 S 7th Ave, City OfIndustry, CA 917460.0048 NEI 2011 0.11 7; 201001 0Air Quality Monitoring Network Plan – July 201443Table 23 Minimum Monitoring Requirements for PAMS(Note: Refer to section 4.5 ofAppendix D of 40 CFR Part 58.)Table 24 Collocated Manual PM2.5, PM10, and Non-NCore Pb Networks(Note: Refer to section 3.2.5, 3.3.5, 3.3.1,and 3.3.4.3 of Appendix A, 40 CFR Part 58.)Table 25 Collocated Automated (continuous) PM2.5 Network(Note: Refer to section 3.2.5 & 3.3.5 of Appendix A, 40 CFR Part 58.)1No FEM PM2.5 BAMs are listed as primary monitors; therefore nocollocation requirement existsbut all are collocated withFRM monitors.AreaType# Required PAMSSites# Active PAMSSites# PAMS SitesNeededSCAQMDMonitoring Area1 or 3 1 3 02 1 4 04 0 0 0Upper AirMeteorology1 5 0PollutantMethod Code# PrimaryMonitors# RequiredCollocated Monitors# Active CollocatedMonitorsPM2.5 (RAAS) 780, 120 20 3 3PM10 (SSI Hi-Vol) 063, 102 21 3 3Pb (TSP Hi-Vol) 110 (Non Source) 8 1 2Pb (Tsp Hi-Vol) 110 (Source) 5 1 1Method Code# PrimaryMonitors# RequiredCollocated Monitors# Active CollocatedMonitors1None 0 0 6

### Air Quality Monitoring Ne twork Plan – July 2014

44 

### Data Submittal and Archiving Requirements

As required in 40 CFR 58.16(a), data is reported via AQS including all ambient air quality data and associated quality assurance data for SO 2, CO, O3, NO2, Near Ro ad NO2, NO, NOy, NOX, Pb-TSP mass concentration, Pb-PM10 mass con centration, PM10 mass concentration, PM2.5 mass concentration, filter-based PM2.5 FRM/FEM field blank mass, sampler-generated average daily temperature, and sampler-generated averag e daily pressure, chemically speciated PM2.5 mass concentration data, PM10-2.5 mass concentr ation, meteorological data from NCore and PAMS sites, average daily temperature\averag e daily pressure for Pb sites and metadata records\information as specified by the AQS Data Coding Manual through December 31, 2013.

A data certification letter has been submitted to the EPA Regional Administrator certifying data collected at all SLAMS and at all FRM, FEM, and ARM SPM stations that meet criteria in appendix A, to part 58, for January 1 through December 31, 2013.