# Annual Monitoring Network Report for Twenty-three Districts in California

July 2013

# ANNUAL MONITORING NETWORK REPORT
FOR 

# TWENTY-THREE DISTRICTS IN CALIFORNIA

California Air Resources Board

July 2013

### _______________________________________________________________________ i Annual M onitoring Network Report for Twenty- three Districts in California 

# Table of Contents

Section 1. Introduction...

............................. .............. ............................... 1
Section 2. Monitoring network overview

.................. .................................. 6
Section 3. Site and monitoring information........................................... 7

Section 4. Additional info rmation about the monitors............................. 18

Section 5. Federal minimum moni toring requirements............................. 26
Section 6. Federal monitoring requirem ents at State-level or by PQAO or Area............

...................................................... ............... ............ 33
6.1 Collocation requirements................................................... 34
Section 7. Federal air quality assurance........................................... 38
Section 8. Operating schedules.......................................................... 42

Section 9. Additional information on PM 2.5 

### monitors............................. 45
9.1 Suitability for comparison to the annual PM 2.5 

### NAAQS........... 45
9.2 Review of changes to PM 2.5 

### network.................................. 45
Section 10. Proposed and recently impl emented monitoring site changes.. 47

Section 11. Access to more in formation about the network................... 51
Appendix A. Regulatory l anguage of 40 CFR 58.10.............................. 55
Appendix B. Minimum moni toring requirements for O 3 

### , PM 2.5 

### and PM 10 

### .... 59
Appendix C. Supporting docum ents included in the network plan............... 63
Appendix D. Acronymns...........

...................................................... .............. 76

### _______________________________________________________________________ ii Annual Monitoring Network Report for Twenty-three Districts in California 

# List of Tables

Table 1. Districts Included in the ARB PQAO......................................... 3

Table 2. Location of Information R equired for Annual Network Plan......... 5
Table 3. Site and Monitoring In formation............................................... 11

Table 4. Additional Information A bout the Monitors.................................. 19

Table 5. Numbers of Required and Existing Sites by Core-based Statistical Area (CBSA)......................................................... 27

Table 5a. Core-Based Statistical Areas in California............... ..................... 28

Table 6. Near-road NO 2 

### Monitoring Requirements in California.................. 30

Table 7. Minimum Moni toring Requirements for SO 2 

### ............................ 31
Table 8. NCore Monitoring in California......

.................................... ............. 33
Table 9. Collocation Requirements for PM 2.5 

### FRM................................ 34
Table 10. Collocation Requirements for continuous PM 2.5 

### FEM............... 35

Table 11. 2012 Audit Date Information for the Monitors in this Plan............. 40

Table 12. Current PM 2.5 

### FRM Operating Schedules............................ 43
Table 13. ARB Proposed and Implem ented Network Changes................. 48



# List of Figures

Figure 1. The ARB PQAO...........

.................... ...................................... 4

### _______________________________________________________________________ 1 Annual Monito ring Network Report for Twenty-th ree Districts in California Section 1. Introduction
Federal regulations require State and local agencies that conduct ambient air monitoring for regulatory purposes to submit an Annual Monitoring Network Report, beginning in 2007. The report must contain specific monitoring network information and be available for a 30-day public inspection period prior to submittal to the U.S. Environmental Pr otection Agency (U.S. EPA). This report meets the requirements specified in Title 40, Code of Federal Regulations, Part 58.10 (40 CFR 58.10) fo r a subset of the California monitoring network.
This report covers the monitoring network for 23 of the 32 air districts within the Air Resources Board (ARB) Primary Qua lity Assurance Organization (PQAO). A PQAO is the umbrella under which m onitoring agencies are organized to ensure that monitoring is conducted accordi ng to a common set of procedures, using common calibration facilities and standar ds, and that oversight is conducted by one air quality organization. Most of the dist ricts in California are included in the ARB PQAO. The exceptions are the South Coast, San Diego, and Bay Area districts, which each comprise their own PQAO. Each PQAO is responsible for their monitoring network and reports direct ly to U.S. EPA on monitoring network requirements.

Table 1 lists the districts in the ARB PQAO that are incl uded within the scope of this report, as well as those districts t hat are preparing their own report. This report covers documentation of the moni toring network for the period of January 1 through December 31, 2012, along with a discussion of proposed changes to the network. Consistent with di rection from the U.S. EPA, this report includes monitors operated by the local districts, ARB, and other agencies within the jurisdiction of the region included in this report. This includes monitors designated as State and Local Air Moni toring Sites (SLAMS), National Core (NCore) multi-pollutant monitoring stati ons, Special Purpose Monitoring (SPM), and other types of monitors operated by ARB, air districts, and National Park Service (NPS). This report also includes the Federal Reference Method (FRM) monitors and Federal Equivalent Method (FEM) monitors.
This report documents that t he area covered by this report complies with federal monitoring requirements, which are s pecified in 40 CFR 58, Appendices A through E. Table 2 identifies the elem ents from 40 CFR 58 t hat are required to be included in the annual report. The requirements are co mprehensive and include information on items such as mi nimum monitoring requirements, monitor operation, monitor siting, sampling sc hedule, and quality assurance activities.

### _______________________________________________________________________ 2 Annual Monito ring Network Report for Twenty-th ree Districts in California Overview of Report
Table 1 and Figure 1 identify the 23 air districts within the ARB PQAO covered in this report as well as the 9 districts in the ARB PQAO that are preparing their own report. A brief summary of elements incl uded in this report is listed below.

 Summary of CFR elements required for inclusion in the report

 Detailed information on each monitor

 Minimum monitoring requirements and compliance with these requirements

 PM collocation requirements

 PM 2.5 

### FRM operating schedules

 Proposed and implemented network changes
In compiling this report, ARB solicited input from and review by the local air districts whose jurisdictions are included. Also, the report was available for a 30 day public inspection period prior to its s ubmittal to the U.S. EPA. This report can be downloaded from the internet at www.arb.ca.gov/aqd/amnr/amnr.htm

.

### _______________________________________________________________________ 3 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 1 Districts Included in the ARB Primary Q uality Assurance Organization (PQAO)

Air districts that are Air districts drafting included in this ARB report their own Annual Network Plans Amador County APCD Great Basin Unified APCD Antelope Valley APCD Imperial County APCD Butte County AQMD Monterey Bay Unified APCD Calaveras County APCD North Coast Unified AQMD Colusa County APCD Sacramento Metropolitan AQMD Eastern Kern APCD San Joaquin Valley APCD El Dorado County AQMD San Luis Obispo County APCD Feather River AQMD Santa Barbara County APCD Glenn County APCD Ventura County APCD Lake County AQMD Lassen County APCD Mariposa County APCD Mendocino County AQMD Modoc County APCD Mojave Desert AQMD Northern Sierra AQMD Northern S onoma County APCD Placer County APCD Shasta County AQMD Siskiyou County APCD Tehama County APCD Tuolumne County APCD Yolo-Solano AQMD Notes: APCD stands for Air Pollution Control District. AQMD stands for Air Quality Management District. The South Coast, San Diego and Bay Area distri cts are not included in this table. These three districts are drafting their own network plan because they are designated PQAOs.

### _______________________________________________________________________ 4 Annual Monito ring Network Report for Twenty-th ree Districts in California Figure 1 The ARB PQAO

### _______________________________________________________________________ 5 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 2 Location of Information Requi red for Annual Network Plan

Elements required by 40 CFR 58.10 Location in Annual Network Plan Monitoring purpose information Section 3 Evidence that siting and operation criteria are met: 40 CFR 58, Appendix A Section 6 & 7 40 CFR 58, Appendix B Section 7 40 CFR 58, Appendix D Section 5 & 6 40 CFR 58, Appendix E Section 7 Air Quality System Site Identification Number (AQS Site ID) Section 3, Table 3 Section 4, Table 4 Location of sites Street address Section 3, Table 3 Geographic coordinat es Section 4, Table 4 Sampling and analysis methods of monitors Section 4, Table 4 Operating schedules for monitors Section 8 Proposals to move/remove stations Section 10 Monitoring objectives and spatial scale Sections 3 & 4, Tables 3 & 4 Sites suitable or not for comparison to the annual PM2.5 National Ambient Air Section 9.1 Quality Standard Core-Based statistical area information Section 3, Tables 3 (MSA and micropolitan) Section 4, Table 4 Section 5, Tables 5, 5a, 6 & 7 Appendix B Review of changes to PM2.5 Network Section 9.2

### _______________________________________________________________________ 6 Annual Monito ring Network Report for Twenty-th ree Districts in California Section 2. Monitori ng Network Overview
California’s ambient air monitoring network is one of the most extensive in the world, consisting of over 250 sites where air pollution levels are monitored and more than 700 monitors used to measure the pollutant levels. A monitoring network this large is needed to cover the diverse range of topography, meteorology, emissions, and air qua lity in California, while adequately representing a large popul ation. The monitoring network is critical in assessing the State’s clean air progress and in determining pollutant exposures in California.
The network of monitoring sites for a pollu tant tends to be denser where the air quality problem is worse and where the popul ation is greater. The monitoring network also strives to provide repr esentative data to all the broad geographical areas in California, includi ng the coastal areas, the in terior valleys, the desert regions, and the mountainous areas. M onitoring is also conducted in Mexico, across the border from San Diego and Imperial counties. Monitors are operated by ARB, some by local air districts, and a few by other entities including the National Park Service, private contractors, a nd tribal authorities. Note that tribal monitors are not included in this report.

Ambient concentration data are collected for a wide variety of pollutants. The most prevalent of these are ozone (O 3 

### ), particulate matter with a diameter of 2.5 microns or less (PM 2.5 

### ), particulate matter with a diameter of 10 microns or less (PM 10 

### ), and a number of toxic compounds. While toxics monitoring plays an integral part in air monitoring programs , this report only covers those pollutants specified by federal requirements to be included in the annual monitoring network plans. Monitoring for meteorological pa rameters is also conducted at a number of sites. The data is needed to bette r understand and inform the public about the nature of the ambient air qualit y problems in California.
Not all pollutants are monitored at all si tes. Most sites m onitor for multiple pollutants; other sites monitor for only one or two. The State and local air quality agencies in California make the effort to only collect data that is needed from each site. The needs for the monitoring data are varied. A sense of this can be gathered from the information on monitori ng objectives and purposes in the next section of this report. A fundamental pur pose of monitoring is to distinguish between areas where pollutant levels vi olate the ambient air quality standards and areas where they do not. Health-bas ed ambient air quality standards are set at levels of pollutant concentrations t hat result in adverse impacts to human health. Evidence of a standard being violat ed in an area leads to efforts to reduce the sources of polluti on that result in the exc eedances. In other words, air quality agencies develop strategi es and regulations to achieve needed emission reductions. Data from the ambi ent monitoring network are then used to indicate the success of this, in terms of the rate of progress towards attaining the standards or to show that standards have been attained.

### _______________________________________________________________________ 7 Annual Monito ring Network Report for Twenty-th ree Districts in California Section 3. Site and Monitoring Information
This section details monitoring informati on for the sites and monitors that fall within the geographical scope of this repor t. U.S. EPA requires three types of information to be included in the annual network plans. These are: federal site type, federal monitoring objective, and f ederal monitor type. The first three subsections, below, describe these federal monitoring requirements. The fourth subsection provides detail on state and local monitoring purposes, which encompass a broader scope of active progr am areas than the federal monitoring requirements.
Federal Site type
Monitoring sites must be capable of informing air quality program managers about many things including the peak air pollution levels, typical levels in populated areas, air pollution transported into and outside of a city or region, air pollution levels near specific sources and so on. For these reasons, U.S. EPA requires that each monitor at a site be designated, at a mini mum, with one of the twelve site types that are established in the AQS database. The site type is monitor dependent. The twelve site types are:

 Extreme Downwind  Max Ozone Concentration  Highest Concentration  Max Precursor Emissions Impacts  Population Exposure  Source Oriented  Upwind Background  Welfare Related Impacts  Regional Transport  General  Quality Assurance  Other
While most of the site types are specif ic to a monitoring purpose, for example population exposure, two site types are general in nature and could be used for broad purposes (i.e., General and Other). U.S. EPA requires that a monitor be properly designated with an appropriate site type so that the data collected by the monitor at a site can be used to suppor t the three basic federal monitoring objectives, which are discussed in more detail below. The site type of the monitors covered in this report is included in Table 3.
Federal Monitoring Objective
An ambient air monitoring network must be designed to meet three basic federal monitoring objectives, which are:
1) to provide air quality data to the public in a timely manner, 2) to support compliance with nat ional air quality standards and 3) to support air quality research studies.

### _______________________________________________________________________ 8 Annual Monito ring Network Report for Twenty-th ree Districts in California For the purpose of this report, the monitoring objectives are the federal monitoring objectives defined in Appendix D of 40 CFR 58. Federal monitoring regulations required that each monitor measuring criteria pollutants have at least one monitoring objective. However, many air quality agencies operate monitors with multiple objectives in mind. For ex ample, monitoring is conducted to provide both air quality data to the public as well as to support air quality standards. The federal monitoring objective of the monitors covered in this report is included in Table 3.
Federal Monitor Type
U.S. EPA requires that every state estab lish a network of air monitoring stations for criteria pollutants, using criteria se t in the CFR for the monitoring stations’ location and operation. The monitoring stat ions in this network are called the State and Local Air Monitoring Stations (SLA MS). In addition, U.S. EPA requires state and local monitoring agencies to est ablish monitoring stations to measure approximately 60 volatile hydrocarbons and carbonyls, which plays an integral role in ozone studies. These stations are called the Photochemical Assessment Monitoring Stations (PAMS). A third type of monitor, the Special Purpose Monitor (SPM), is used by state and local monito ring agencies to fulfill very specific or short-term monitoring goals. While ther e are a total of fifteen monitor types established by U.S. EPA, SLAMS, PA MS, and SPM are the three most common monitor types used by state and local monitoring agencies in California. Table 3 lists the monitor type of each monitor that is covered in this report. The majority of the monitors included in this report are part of the SLAMS network in California. The completed list of monitor types is listed at the end of Table 3.
State and Local Monitoring Purposes
There are a number of monitoring purposes besides the federal classifications. These are directly related to the needs of state and local agencies. California has a very comprehensive monitoring netwo rk that is needed for implementing a variety of programs. List ed below are some of the most common state and local monitoring purposes:

 Agricultural Burning refers to the intentional use of fire for vegetation management, both in agricultural settings, such as fields and orchards, as well as in wildlands, including rangelan d and forests, to improve land for wildlife and game habitat or as a tool for disease or pest prevention. Monitors with this purpose are used to assess when and where burning
can occur.

 Expected High Concentration monitoring is used to measure pollutant concentrations in areas where air polluti on is expected to be at its highest. The State designation criteria contai n the requirement for this type of monitoring in order to show that an area attains the State air quality

### _______________________________________________________________________ 9 Annual Monito ring Network Report for Twenty-th ree Districts in California standards. During the State area designa tion process, the data from all monitors in an area are examined, but only the data from the monitors with the highest concentrations will dete rmine the designation of the area.

 The Geyser Air Monitoring Program (GAMP) was established to monitor ambient air quality in geothermal ar eas, mainly monitoring for hydrogen sulfide.

 Residential Burning or backyard burning is the open burning of yard wastes by household residents. Ba ckyard burning includes dry weeds, plant pruning, shrubbery, tree trimmi ngs, and branches. Data from monitors with this purpose help gu ide decisions regarding appropriate times to allow residential burning.

 Representative Concentration means locating a site to represent a geographical region with common topogr aphy and meteorology. These sites do not necessarily indicate the highest concentrations in the area for a particular pollutant. This is a purpose listed by the U.S. EPA.

 State Area Designation monitoring is used to determine compliance with the State ambient air quality standards fo r a particular pollutant. Using the monitors with the highest concentrations of a particular pollutant, the ARB determines if the area is in attainment or non-atta inment of the State air quality standards, as already described in the discussion of Expected High Concentration Monitoring.

 State Implementation Plan (SIP) and/or Maintenance Plan Requirement is monitoring conducted to demonstrate co mpliance with SIP requirements. The SIP is a plan prepared by stat es and submitted to the U.S. EPA describing how each area will attain and maintain federal air quality standards. Once an area attains a st andard, the area is required to show and maintain that status, which require s continued monitoring in the area.

 Trend Analysis monitoring is useful for comparing and analyzing air pollution concentrations over time and distance. Usually, trend analyses show the progress or lack of progre ss in improving air quality for an area over a period of years. Some site s are more useful than others for trend analyses. For example, it is better to have a history of m onitoring at a site that includes the full time period of a trend analysis.
This is not a comprehensive list of a ll state and local monitoring purposes, but only includes the most common purposes used for monitoring by air quality agencies in California. Note that whil e the terms “objecti ve” and “purpose” are almost analogous to one another and could be used interchangeably, to avoid confusion, this report separates the m onitoring objectives from the monitoring purposes by limiting the monitoring objecti ves to the three federal objectives as defined above and the monitoring purposes to the state and local monitoring

### _______________________________________________________________________ 10 Annual Monito ring Network Report for Twenty-th ree Districts in California purposes. The state and local monitoring purposes are more comprehensive than the federal monitoring objectives. T he state and local monitoring purpose of the monitors covered in this report is included in Table 3.
Summary of Table 3
Table 3 lists the federal site type, federal monitoring objecti ve, federal monitor type, and state and local monitoring purposes of each monitor covered in this report. In addition, Table 3 lists other si te and monitoring information, such as the Air Quality System (AQS) Site ID, site address, site name, po llutants monitored, and parameter codes. Note that the term “site type” refers to the individual monitor(s) at a site and not the site itsel f. U.S. EPA has determined that a single site type may not describe all of the moni tors at a particular site; therefore, U.S. EPA established the site type designat ions at the monitor level, rather than the site level. Also note that a monito r can have multiple site type, monitoring objective, monitor type, or m onitoring purpose designations.
Finally, Table 3 also lists the location of each monitor, including the Core-Based Statistical Area (CBSA) in which the moni tor is located. CBSAs are defined by the United States Office of M anagement and Budget (OMB) and provide a consistent set of geographical areas for Federal agencies to use in collecting, tabulating, and publishing statistical data. Two types of areas are included as CBSAs: Metropolitan Statistical Areas and Micropolitan Statistical Areas. The difference between a Metropolitan and Micropolit an statistical area is the level of population. A Metropolitan Statistical Ar ea has an urban core with a population of 50,000 or more, whereas a Micropolitan Statistical Area has an urban core with a population of at least 10,000, but less than 50,000. Both Metropolitan and Micropolitan statistical areas comp rise one or more counties.
U.S. EPA specifies the number of monito rs required for each pollutant based on the OMB statistical areas. Older standards, such as t he federal ozone standard, specify required monitors based on Metropo litan Statistical Area and Micropolitan Statistical Area. More recent standards, such as the federal SO 2 

### standard, use the newer collective term, CBSA. Because it is more current, the term CBSA is used in this report, as well. A compr ehensive CBSA list for California is provided in Table 5a in Section 5 of this repor t. Also in Table 5a is information about CBSAs that are not covered in this plan, but are covered either in part or in whole, in other indivi dual district plans.

### _______________________________________________________________________ 11 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 3 Site and Monitoring Information (Monitors reporting data in 2012)

OZONE CO NO2 SO2 PM2.5* PM10* Station/Address/AQS Site # 44201 42101 42602 42401 88101/88501 81102

LAKE COUNTY AIR BASIN Lake County / CBSA: Clearlake Micropolitan Statistical Area Middletown-Anderson Springs Road Site Type: Gnrl 11270 Anderson Springs Road, Middletown Monitoring Obj.: RSupport 060333010 Monitoring Purp.: StateD, GAMP Monitor Type: SLAMS

Glenbrook-High Valley Road Site Type: Gnrl 8276 High Valley Road, Cobb Monitoring Obj.: RSupport 060333011 Monitoring Purp.: StateD, GAMP Monitor Type: SLAMS

Lakeport-Lakeport Blvd Site Type: Gnrl Gnrl Gnrl 905 Lakeport Blvd, Lakeport Monitoring Obj.: NAAQS NAAQS NAAQS 060333001 Monitoring Purp.: StateD StateD StateD Monitor Type: SLAMS SLAMS SLAMS

LAKE TAHOE AIR BASIN El Dorado County / CBSA: Sacramento-Arden-Arcade-Roseville Metropolitan Statistical Area South Lake Tahoe-Sandy Way Site Type: (PopEx) 3337 Sandy Way, South Lake Tahoe Monitoring Obj.: (PublicR) 060170011 Monitoring Purp.: (RConc) Monitor Type: (SLAMS)

MOJAVE DESERT AIR BASIN Kern County / CBSA: Bakersfield Metropolitan Statistical Area Canebrake-3147 Highway 178 Site Type: PopEx 3147 Highway 178, Canebrake Monitoring Obj.: NAAQS 060290017 Monitoring Purp.: RConc Monitor Type: SLAMS

Mojave-923 Poole Street Site Type: HConc (PopEx) (PopEx) 923 Poole Street, Mojave Monitoring Obj.: NAAQS (NAAQS) (NAAQS) 060290011 Monitoring Purp.: SIPMain, Trans (StateD) (StateD) Monitor Type: SLAMS (SLAMS) (SLAMS)

Ridgecrest-100 West California Avenue Site Type: PopEx PopEx 100 West California Avenue, Ridgecrest Monitoring Obj.: NAAQS NAAQS 060290015 Monitoring Purp.: StateD, RConc SIPMain, StateD Monitor Type: SLAMS SLAMS

Los Angeles County / CBSA: Los Angeles-Long Beach-Anahiem Metropolitan Statistical Area Lancaster-43301 Division Street Site Type: Trans Gnrl Gnrl Gnrl Gnrl:(Gnrl) 43301 Division Street, Lancaster Monitoring Obj.: NAAQS NAAQS NAAQS NAAQS NAAQS:(PublicR) 060379033 Monitoring Purp.: Trnds RConc RConc RConc Rconc:(RConc) Monitor Type: SLAMS SLAMS SLAMS SLAMS SLAMS:(SLAMS)

Riverside County / CBSA: Riverside-San Bernardino-Ontario Metropolitan Statistical Area Blythe-445 W Murphy Street Site Type: Gnrl 445 W Murphy Street, Blythe Monitoring Obj.: PublicR 060659003 Monitoring Purp.: RConc Monitor Type: SLAMS

San Bernardino County / CBSA: Riverside-San Bernardino-Ontario Metropolitan Statistical Area
Barstow-200 E Buena Vista Road Site Type: Trans Gnrl Gnrl Gnrl 200 E Buena Vista Road, Barstow Monitoring Obj.: NAAQS NAAQS NAAQS NAAQS 060710001 Monitoring Purp.: StateD StateD StateD StateD Monitor Type: SLAMS SLAMS SLAMS SLAMS

Hesperia-Olive Street Site Type: Trans Gnrl 17288 Olive Street, Hesperia Monitoring Obj.: NAAQS NAAQS 060714001 Monitoring Purp.: StateD StateD Monitor Type: SLAMS SLAMS

### _______________________________________________________________________ 12 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 3 (cont.) Site and Monitoring Information (Monitors reporting data in 2012)

OZONE CO NO2 SO2 PM2.5* PM10* Station/Address/AQS Site # 44201 42101 42602 42401 88101/88501 81102

Joshua Tree National Monument Site Type: PopEx 060719002 Monitoring Obj.: PublicR Monitoring Purp.: RConc

Monitor Type: SLAMS

Lucerne Valley-Middle School Site Type: Gnrl 8560 Aliento-Middle School, Lucerne Valley Monitoring Obj.: NAAQS 060710013 Monitoring Purp.: StateD Monitor Type: SLAMS

Phelan-Beekley and Phelan Roads Site Type: Trans Beekley Road and Phelan Road, Phelan Monitoring Obj.: NAAQS 060710012 Monitoring Purp.: StateD Monitor Type: SLAMS

Trona-Athol and Telescope Site Type: Gnrl Gnrl Gnrl Gnrl:(HConc) Corner of Athol and Telescope, Trona Monitoring Obj.: NAAQS NAAQS NAAQS NAAQS:(NAAQS) 060711234 Monitoring Purp.: StateD StateD StateD StateD:(StateD) Monitor Type: SLAMS SLAMS SLAMS SLAMS:(SLAMS)

Victorville-14036 Park Avenue Site Type: Trans Gnrl Gnrl Gnrl Gnrl Gnrl:(PopEx) 14036 Park Avenue, Victorville Monitoring Obj.: NAAQS NAAQS NAAQS NAAQS NAAQS NAAQS:(NAAQS) 060710306 Monitoring Purp.: StateD StateD StateD StateD StateD StateD:(StateD) Monitor Type: SLAMS SLAMS SLAMS SLAMS SLAMS SLAMS:(SLAMS)

MOUNTAIN COUNTIES AIR BASIN Amador County / Not in a CBSA Jackson-201 Clinton Road Site Type: Gnrl/Trans 201 Clinton Road, Jackson Monitoring Obj.: NAAQS 060050002 Monitoring Purp.: StateD/SIPMain Monitor Type: SLAMS

Calaveras County / Not in a CBSA San Andreas-501 Gold Strike Road Site Type: Gnrl/Trans (Gnrl) Gnrl 501 Gold Strike Road, San Andreas Monitoring Obj.: NAAQS (PublicR) NAAQS 060090001 Monitoring Purp.: StateD/SIPMain (RConc) StateD Monitor Type: SLAMS (SPM) SLAMS

El Dorado County / CBSA: Sacramento-Arden-Arcade-Roseville Metropolitan Statistical Area Cool-Highway 193 Site Type: HConc 1400 American River Trail, Cool Monitoring Obj.: NAAQS 060170020 Monitoring Purp.: SIPMain Monitor Type: SLAMS

Echo Summit Site Type: Trans 21200 Highway 50-Little Norway Monitoring Obj.: NAAQS 060170012 Monitoring Purp.: StateD Monitor Type: SLAMS

Placerville-Gold Nugget Way Site Type: HConc/Trans 3111 Gold Nugget Way, Placerville Monitoring Obj.: NAAQS 060170010 Monitoring Purp.: StateD Monitor Type: SLAMS

Mariposa County / Not in a CBSA Jerseydale-6440 Jerseydale Site Type: Trans 6440 Jerseydale Road, Jerseydale Monitoring Obj.: NAAQS 060430006 Monitoring Purp.: StateD Monitor Type: SLAMS

Yosemite National Park-Turtleback Dome Site Type: HConc/Trans 060430003 Monitoring Obj.: NAAQS Monitoring Purp.: StateD

Monitor Type: SLAMS

Yosemite Village-Visitor Center Site Type: (Gnrl) Gnrl 060431001 Monitoring Obj.: (PublicR) NAAQS Monitoring Purp.: (RConc) StateD

Monitor Type: (SPM) SLAMS

### _______________________________________________________________________ 13 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 3 (cont.) Site and Monitoring Information (Monitors reporting data in 2012)

OZONE CO NO2 SO2 PM2.5* PM10* Station/Address/AQS Site # 44201 42101 42602 42401 88101/88501 81102

Nevada County / CBSA: Truckee-Grass Valley Micropolitan Statistical Area Grass Valley-Litton Building Site Type: HConc/Trans HConc:(Gnrl) 200 Litton Drive, Grass Valley Monitoring Obj.: NAAQS NAAQS:(NAAQS) 060570005 Monitoring Purp.: StateD/Trnds StateD:(StateD) Monitor Type: SLAMS SLAMS:(SLAMS)

Truckee-Fire Station Site Type: HConc:(Gnrl) 10049 Donner Pass Road, Truckee Monitoring Obj.: NAAQS:(NAAQS) 060571001 Monitoring Purp.: StateD:(StateD) Monitor Type: SLAMS:(SLAMS)

White Cloud Mountain Site Type: Gnrl 26533 State Highway 20, White Cloud Mtn. Monitoring Obj.: NAAQS 060570007 Monitoring Purp.: StateD Monitor Type: SLAMS

Placer County / CBSA: Sacramento-Arden-Arcade-Roseville Metropolitan Statistical Area Colfax-City Hall Site Type: Gnrl (Gnrl) Gnrl 33 South Main Street, Colfax Monitoring Obj.: NAAQS (PublicR) NAAQS 060610004 Monitoring Purp.: StateD (StateD) StateD Monitor Type: SLAMS (SLAMS) SLAMS

Plumas County / Not in a CBSA Chester-222 1st Avenue Site Type: (Gnrl) 222 1st Avenue, Chester Monitoring Obj.: (NAAQS) 060631007 Monitoring Purp.: (StateD) Monitor Type: (SLAMS)

Portola-161 Nevada Street Site Type: HConc:(Gnrl) 420 N Gulling Street, Portola Monitoring Obj.: NAAQS:(NAAQS) 060631009 Monitoring Purp.: StateD:(StateD) Monitor Type: SLAMS:(SLAMS)

Quincy-N Church Street Site Type: HConc:(Gnrl) 267 North Church Street, Quincy Monitoring Obj.: NAAQS:(NAAQS) 060631006 Monitoring Purp.: StateD:(StateD) Monitor Type: SLAMS:(SLAMS)

Tuolumne County / CBSA: Phoenix Lake-Cedar Ridge Micropolitan Statistical Area Sonora-Barretta Street Site Type: Gnrl 251 South Barretta Street, Sonora Monitoring Obj.: NAAQS 061090005 Monitoring Purp.: StateD/SIPMain Monitor Type: SLAMS

NORTH COAST AIR BASIN Mendocino County / CBSA: Ukiah Micropolitan Statistical Area Fort Bragg-Dana Street Site Type: (Gnrl) 300 Dana Street, Fort Bragg Monitoring Obj.: (NAAQS) 060450010 Monitoring Purp.: (RConc) Monitor Type: (SLAMS)

Ukiah-County Library Site Type: (Gnrl) 105 North Main Street, Ukiah Monitoring Obj.: (NAAQS) 060450006 Monitoring Purp.: (RConc) Monitor Type: (SLAMS)

Ukiah-East Gobbi Street Site Type: Trans 306 East Gobbi Street, Ukiah Monitoring Obj.: NAAQS 060450008 Monitoring Purp.: StateD Monitor Type: SLAMS

Willits-125 East Commercial Street Site Type: (Gnrl) 125 East Commercial Street, Willits Monitoring Obj.: (NAAQS) 060452002 Monitoring Purp.: (RConc) Monitor Type: (SLAMS)

Sonoma County / CBSA: Santa Rosa Metropolitan Statistical Area Cloverdale-100 Washington Street Site Type: Gnrl 100 Washington Street, Colverdale Monitoring Obj.: NAAQS 060970001 Monitoring Purp.: AgBn, ResBn Monitor Type: SLAMS

### _______________________________________________________________________ 14 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 3 (cont.) Site and Monitoring Information (Monitors reporting data in 2012)

OZONE CO NO2 SO2 PM2.5* PM10* Station/Address/AQS Site # 44201 42101 42602 42401 88101/88501 81102

Guerneville-Church and 1st Site Type: Gnrl 16255 1st Street, Guerneville Monitoring Obj.: NAAQS 060973002 Monitoring Purp.: AgBn, ResBn Monitor Type: SLAMS

Healdsburg-133 Matheson Street Site Type: Gnrl 133 Matheson Street, Healdsburg Monitoring Obj.: NAAQS 060970002 Monitoring Purp.: AgBn, ResBn Monitor Type: SLAMS

Healdsburg-Municipal Airport Site Type: Gnrl 200a Heidelberg Way, Healdsburg Monitoring Obj.: NAAQS 060971003 Monitoring Purp.: StateD Monitor Type: SLAMS

NORTHEAST PLATEAU AIR BASIN Siskiyou County / Not in a CBSA
Yreka-Foothill Drive Site Type: Gnrl/Trans Gnrl Gnrl 528 Foothill Drive, Yreka Monitoring Obj.: NAAQS NAAQS NAAQS 060932001 Monitoring Purp.: StateD StateD AgBn/StateD Monitor Type: SLAMS SLAMS SLAMS

SACRAMENTO VALLEY AIR BASIN Butte County / CBSA: Chico Metropolitan Statistical Area Chico-East Site Type: Gnrl Gnrl Gnrl Gnrl:(Gnrl) Gnrl 984 East Avenue, Chico Monitoring Obj.: NAAQS NAAQS NAAQS NAAQS:(PublicR) NAAQS 060070008 Monitoring Purp.: StateD/AgBn StateD StateD StateD:(AgBn) StateD/AgBn Monitor Type: SLAMS SLAMS SLAMS SLAMS:(SPM) SLAMS

Gridley-Cowee Avenue Site Type: (Gnrl) 608 Cowee Avenue, Gridley Monitoring Obj.: (PublicR) 060074001 Monitoring Purp.: (AgBn) Monitor Type: (SPM)

Paradise-4405 Airport Road Site Type: Gnrl/HConc 4405 Airport Road, Paradise Monitoring Obj.: NAAQS 060070007 Monitoring Purp.: StateD/AgBn Monitor Type: SLAMS

Paradise-6701 Clark Road Site Type: (Gnrl) 6701 Clark Road, Paradise Monitoring Obj.: (PublicR) 060072002 Monitoring Purp.: (AgBn) Monitor Type: (SPM)

Colusa County/ Not in a CBSA Colusa-Sunrise Blvd Site Type: Gnrl Gnrl:(Gnrl) Gnrl 100 Sunrise Blvd, Colusa Monitoring Obj.: NAAQS NAAQS:(PublicR) NAAQS 060111002 Monitoring Purp.: StateD/AgBn StateD:(AgBn) StateD/AgBn Monitor Type: SLAMS SLAMS:(SPM) SLAMS

Glenn County / Not in a CBSA Willows-E Laurel Street Site Type: Gnrl (Gnrl) Gnrl 720 N Colusa Street, Willows Monitoring Obj.: NAAQS (PublicR) NAAQS 060210003 Monitoring Purp.: StateD/AgBn (AgBn) StateD/AgBn Monitor Type: SLAMS (SPM) SLAMS

Placer County / CBSA: Sacramento-Arden-Arcade-Roseville Metropolitan Statistical Area
Auburn-Atwood Site Type: Gnrl (Gnrl) 11645 Atwood Road, Auburn Monitoring Obj.: NAAQS (NAAQS) 060610003 Monitoring Purp.: StateD (StateD) Monitor Type: SLAMS (SLAMS)

Auburn-B Avenue Site Type: Gnrl 11464 B Ave, Auburn Monitoring Obj.: NAAQS 060610002 Monitoring Purp.: StateD Monitor Type: SLAMS

Lincoln-1st Street Site Type: Gnrl (Gnrl) 1445 1st Street, Lincoln Monitoring Obj.: NAAQS (NAAQS) 060612002 Monitoring Purp.: StateD (StateD) Monitor Type: SLAMS (SLAMS)

### _______________________________________________________________________ 15 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 3 (cont.) Site and Monitoring Information (Monitors reporting data in 2012)

OZONE CO NO2 SO2 PM2.5* PM10* Station/Address/AQS Site # 44201 42101 42602 42401 88101/88501 81102

Roseville-N Sunrise Blvd Site Type: Gnrl Gnrl Gnrl:(Gnrl) Gnrl 151 N Sunrise Blvd, Roseville Monitoring Obj.: NAAQS NAAQS NAAQS:(PublicR) NAAQS 060610006 Monitoring Purp.: StateD/AgBn StateD StateD:(AgBn) StateD/AgBn Monitor Type: SLAMS SLAMS SLAMS:(SPM) SLAMS

Shasta County / CBSA: Redding Metropolitan Statistical Area Anderson-North Street Site Type: Gnrl Gnrl 2220 North Street, Anderson Monitoring Obj.: NAAQS NAAQS 060890007 Monitoring Purp.: StateD StateD Monitor Type: SLAMS SLAMS

Lassen Volcanic Natl Park-Manzanita Lake Site Type: Gnrl 060893003 Monitoring Obj.: NAAQS Monitoring Purp.: StateD

Monitor Type: SLAMS

Redding-Health Department Roof Site Type: Gnrl Gnrl Gnrl 2630 Hospital Lane, Redding Monitoring Obj.: NAAQS NAAQS NAAQS 060890004 Monitoring Purp.: StateD StateD StateD Monitor Type: SLAMS SLAMS SLAMS

Shasta Lake-13791 Lake Blvd Site Type: Gnrl 13791 Lake Blvd, Shasta Lake Monitoring Obj.: NAAQS 060890009 Monitoring Purp.: StateD Monitor Type: SLAMS

Shasta Lake-4066 La Mesa Avenue Site Type: Gnrl 4066 La Mesa Avenue, Shasta Lake Monitoring Obj.: NAAQS 060890008 Monitoring Purp.: StateD Monitor Type: SLAMS

Solano County / CBSA: Vallejo-Fairfield Metropolitan Statistical Area Vacaville-Merchant Street Site Type: Gnrl 650 Merchant Street, Vacaville Monitoring Obj.: NAAQS 060953001 Monitoring Purp.: StateD Monitor Type: SLAMS

Vacaville-Ulatis Drive Site Type: Gnrl 2012 Ulatis Drive, Vacaville Monitoring Obj.: NAAQS 060953003 Monitoring Purp.: StateD Monitor Type: SLAMS

Sutter County / CBSA: Yuba City Metropolitan Statistical Area Sutter Buttes-S Buttes Site Type: HConc/Trans 061010004 Monitoring Obj.: NAAQS Monitoring Purp.: AgBn

Monitor Type: SLAMS

Yuba City-Almond Street Site Type: Gnrl Gnrl Gnrl:(Gnrl) Gnrl 773 Almond Street, Yuba City Monitoring Obj.: NAAQS NAAQS NAAQS:(PublicR) NAAQS 061010003 Monitoring Purp.: StateD/AgBn StateD StateD:(AgBn) StateD Monitor Type: SLAMS SLAMS SLAMS:(SPM) SLAMS

Tehama County / CBSA: Red Bluff Micropolitan Statistical Area Red Bluff-Main Street Site Type: (Gnrl) 301 S Main Street, Red Bluff Monitoring Obj.: (NAAQS) 061030006 Monitoring Purp.: (RConc) Monitor Type: (SLAMS)

Red Bluff-Oak Street Site Type: Gnrl 502 Oak Street, Red Bluff Monitoring Obj.: NAAQS 061030005 Monitoring Purp.: StateD Monitor Type: SLAMS

Red Bluff-Messer Drive Site Type: Gnrl 700 Messer Drive, Red Bluff Monitoring Obj.: NAAQS 061030002 Monitoring Purp.: StateD Monitor Type: SLAMS

### _______________________________________________________________________ 16 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 3 (cont.) Site and Monitoring Information (Monitors reporting data in 2012)

OZONE CO NO2 SO2 PM2.5* PM10* Station/Address/AQS Site # 44201 42101 42602 42401 88101/88501 81102

Tuscan Butte Site Type: Gnrl/Trans 061030004 Monitoring Obj.: NAAQS Monitoring Purp.: StateD

Monitor Type: SLAMS

Yolo County / CBSA: Sacramento-Arden-Arcade-Roseville Metropolitan Statistical Area Davis-UCD Campus Site Type: Gnrl Gnrl (Gnrl) 061130004 Monitoring Obj.: NAAQS NAAQS (PublicR) Monitoring Purp.: StateD/AgBn StateD (AgBn)

Monitor Type: SLAMS SLAMS (SPM)

West Sacramento-15th Street Site Type: Gnrl 132 15th Street, West Sacramento Monitoring Obj.: NAAQS 061132001 Monitoring Purp.: StateD Monitor Type: SLAMS

Woodland-Gibson Road Site Type: Gnrl Gnrl Gnrl 41929 E Gibson Road, Woodland Monitoring Obj.: NAAQS NAAQS NAAQS 061131003 Monitoring Purp.: StateD StateD StateD/AgBn Monitor Type: SLAMS SLAMS SLAMS



### Footnotes: This table only lists sites and monitors that have reported data in 2012. Lead monitors are not included in this list because there is no lead monitoring in the areas included in this report.
After a county name, the table lists t he U.S. Office of Management and Budget's Core-Based Statistical Area (CBSA) that includes the county. The term CBSA includes both Metropolitan Statistical Areas and Micropolitan Statistical Areas. A Metropolitan Statistical Area has at least one urban area with a popula tion of 50,000 or more. A Micropolitan Statistical Area has at least one urban area with a population of 10,000 to less than 50,000. *Site and monitoring information inside a parent hesis ( ) in a PM column denotes that a continuous PM monitor is located at t he site. Site and moni toring information without a parenthesis reflects the filter-bas ed PM monitor. For sites that have both continuous and filter-based PM monitors, the monitoring information are shown in the same column, separated by a colon (for ex ample, SLAMS:(SPM)). Note that not all continuous PM 2.5 

### monitors are Federal Equivalent Methods (FEMs). While some continuous PM 2.5 

### monitors are non-FEMs, they ar e California Approved Samplers (CAS) and the data are used for State purposes. For example, the PM 2.5 

### data (88501) from the BAM 1020, method c ode 731, are considered non-FEMs but these data are used in State designation calculations. Inversely, the continuous FEM PM 2.5 

### data (88101) from the Met One BAM , method code 170, are considered FEMs but these data are not used in State calculations. The table lists both types of continuous PM 2.5 

### monitors. PM 2.5 

### FEM monitors are purposely BOLD and italicized to distinguish them from the non-FEM monitors. All continuous PM 10 

### monitors are FEMs (i.e., TEOMs or BAMs).

### _______________________________________________________________________ 17 Annual Monito ring Network Report for Twenty-th ree Districts in California Codes used in Table 3

ExDwn Extreme downwind HConc Highest concentration MaxO3 Max ozone concentration MaxEm Max precursor emmissions impact PopEx Population Exposure Sourc Source oriented UpWin Upwind background Gnrl General/Background Trans Regional transport Welf Welfare related impacts QA Quality Assurance Other Other

Federal Monitoring Objectives PublicR Provide air pollution data to public in a timely manner NAAQS NAAQS comparison RSupport Research support

EHConc Monitoring at expected high concentration sites relative to California Ambient Air Quality Standards RConc Representative concentrations AgBn Support agricultural/prescribed burn decisions ResBn Support residential burn program Trnds Trends analysis StateD Support State area designation SIPMain State Implementation Plan (SIP) maintance requirement GAMP Geyser Air Monitoring Program

Monitor Types Impr Improve Indx Index site Indus Industrial NATTS NATTS NonEPA Non-EPA federal NonReg Non-regulatory PAMS PAMS NCore Proposed Ncore QAcoll QA collocated SLAMS SLAMS SPM Special purpose SupSP Supplemental speciation TrnSP Trends speciation Tribal Tribal monitors UnPAMS Unofficial PAMS Monitoring Purposes Site Types

### _______________________________________________________________________ 18 Annual Monito ring Network Report for Twenty-th ree Districts in California Section 4. Additional Info rmation about the Monitors
U.S. EPA regulations require that the annual network plan list specific additional information about the monitors that char acterize the nature and location of the monitoring. Table 4 lists the spatial scales, sampling methods, method codes, parameter occurrence codes (POC) and star t dates of the monitors that are included in this report. Also included in Table 4 are the geographical coordinates of the monitoring sites. Note that t he continuous PM monitors are listed in parenthesis in the PM columns in Table 4. Moreover, continuous PM 2.5 

### FEM monitors are purposely bold and italicized in the PM 2.5 

### column to differentiate them from the continuous PM 2.5 

### non-FEM monitors. At the end of Table 4, the codes used for the spatial scales, sampling methods, and method codes are defined. Also, a brief explan ation of the POC is given.
The regulations also require that the annual network plan list the laboratory analysis methods of the monitors. Howe ver, there is no separate analysis method for the gaseous monitors and continuous PM monitors . For the filter-based PM monitors, only simple mass weighing is done. Finally, the regulations require that the network pl an include distance from road information, groundcover of the monitoring sites, probe heights of the monitoring instruments, materials used for monitoring, residence time, and distance from obstructions information.
The monitoring information for groundcover, distance from road/obstruction, probe heights, monitoring instrument/mater ial and residence time is not included at this time. Previous network plans includ ed this information; however, U.S. EPA determined that some of t he information was inadequate and needs to be updated. For this reason, U.S. EPA, ARB, districts, and a contractor are in the process of developing a statewide database to collect and store current site and monitoring information for all of the monitoring sites in California. Once this database is complete, which is anticipat ed to be available for use in 2014, this required site and monitoring information will be included in the ARB network plan. In the interim, older information can be viewed via ARB’s site surveys at: www.arb.ca.gov/qaweb/site.php

.

### _______________________________________________________________________ 19 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 4 Additional Information about the Monitors (Monitors reporting data in 2012)

OZONE CO NO2 SO2 PM2.5* PM10* Station/Geographical Coordinates/AQS Site # 44201 42101 42602 42401 88101/88501 81102

LAKE COUNTY AIR BASIN Lake County / CBSA: Clearlake Micropolitan Statistical Area Middletown-Anderson Springs Road Spatial Scale: NGH 38.7744, -122.6994 Samp. Method: SCH, XG 060333010 Mthd. Code/POC: 098 / 1 Start Date: 1-1-2005

Glenbrook-High Valley Road Spatial Scale: NGH 38.8502, -122.7361 Samp. Method: SCH, XG 060333011 Mthd. Code/POC: 098 / 1 Start Date: 1-1-2005

Lakeport-Lakeport Blvd Spatial Scale: URB URB URB 39.0330, -122.9219 Samp. Method: UV SCH SCH 060333001 Mthd. Code/POC: 087 / 1 117 / 1 098 / 2 Start Date: 1-1-1980 1-1-1999 4-1-2001

LAKE TAHOE AIR BASIN El Dorado County / CBSA: Sacramento-Arden-Arcade-Rosev ille Metr opolitan Statistical Area South Lake Tahoe-Sandy Way Spatial Scale: (NGH) 38.9450, -119.9703 Samp. Method: (BAM) 060170011 Mthd. Code/POC: (122 / 2) Start Date: (6-1-2001)

MOJAVE DESERT AIR BASIN Kern County / CBSA: Bakersfield Metropolitan Statistical Area Canebrake-3147 Highway 178 Spatial Scale: REG 35.7277, -118.1393 Samp. Method: SI 060290017 Mthd. Code/POC: 141 / 1 Start Date: 1/1/2009

Mojave-923 Poole Street Spatial Scale: REG (NGH) (REG) 35.0503, -118.1478 Samp. Method: UV (BAM) (BAM) 060290011 Mthd. Code/POC: 087 / 1 (170 / 3) (122 / 3) Start Date: 8-1-1993 (4-1-2011) (4-1-2011)

Ridgecrest-100 West California Avenue Spatial Scale: NGH NGH 35.6211, -117.6731 Samp. Method: SI SI 060290015 Mthd. Code/POC: 118 / 1 063 / 1 Start Date: 6-1-1999 12-15-1999

Los Angeles County / CBSA: Los Angeles-Long Beach-Anahiem Metropolitan Statistical Area Lancaster-43301 Division Street Spatial Scale: MID MID MID NGH NGH:(NGH) 34.6713, -118.1305 Samp. Method: UV IR CL SQ SI:(BAM) 060379033 Mthd. Code/POC: 087 / 1 093 / 1 099 / 1 117 / 1 063 / 1:(122 / 2) Start Date: 11-1-2001 11-1-2001 11-1-2001 11-1-2001 11-1-01:(11-1-01)

Riverside County / CBSA: Riverside-San Bernardino-Ontario Metropolitan Statistical Area Blythe-445 W Murphy Street Spatial Scale: NGH 33.6119, -114.6000 Samp. Method: UV 060659003 Mthd. Code/POC: 087 / 1 Start Date: 5-1-2003

San Bernardino County / CBSA: Riverside-San Bernardino-Ontario Metropolitan Statistical Area
Barstow-200 E Buena Vista Road Spatial Scale: NGH NGH NGH NGH 34.8938, -117.0244 Samp. Method: UV IR CL SI 060710001 Mthd. Code/POC: 087 / 1 093 / 1 099 / 1 063 / 2 Start Date: 1-1-1974 1-1-1973 1-1-1973 4-20-1988

Hesperia-Olive Street Spatial Scale: NGH NGH 34.4158, -117.2861 Samp. Method: UV SI 060714001 Mthd. Code/POC: 087 / 1 063 / 1 Start Date: 1-1-1980 1-1-1989

### _______________________________________________________________________ 20 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 4 (cont.) Additional Information about the Monitors (Monitors reporting data in 2012)

OZONE CO NO2 SO2 PM2.5* PM10* Station/Geographical Coordinates/AQS Site # 44201 42101 42602 42401 88101/88501 81102

Joshua Tree National Monument Spatial Scale: REG 34.0694, -116.3888 Samp. Method: UV 060719002 Mthd. Code/POC: 047 / 1 Start Date: 10/1/1993

Lucerne Valley-Middle School Spatial Scale: NGH 34.4103, -116.9067 Samp. Method: SI 060710013 Mthd. Code/POC: 063 / 1 Start Date: 6-1-1989

Phelan-Beekley and Phelan Roads Spatial Scale: NGH 34.4250, -117.5897 Samp. Method: UV 060710012 Mthd. Code/POC: 087 / 1 Start Date: 7-1-1987

Trona-Athol and Telescope Spatial Scale: REG NGH REG NGH:(NGH) 35.7744, -117.3722 Samp. Method: UV CL FL SI:(BAM) 060711234 Mthd. Code/POC: 087 / 1 099 / 1 077 / 1 063 / 1:(122/ 2) Start Date: 4-1-1997 4-1-1997 4-1-1997 4/1/97:(6-1-97)

Victorville- 14036 Park Avenue Spatial Scale: NGH NGH NGH NGH NGH NGH:(NGH) 34.5122, -117.3250 Samp. Method: UV IR CL FL SQ SI:(BAM) 060710306 Mthd. Code/POC: 087 / 1 093 / 1 099 / 1 077 / 1 117 / 1 063 / 1 (122 / 2) Start Date: 1-1-2000 1-1-2000 1-1-2000 1/1/2000 1-1-2000 4-1-2000

MOUNTAIN COUNTIES AIR BASIN Amador County / Not in a CBSA
Jackson- 201 Clinton Road Spatial Scale: URB 38.3427, -120.7644 Samp. Method: UV 060050002 Mthd. Code/POC: 087 / 1 Start Date: 5-1-1992

Calaveras County / Not in a CBSA San Andreas-501 Gold Strike Road Spatial Scale: REG (REG) REG 38.2019, -120.6802 Samp. Method: UV (BAM) SI 060090001 Mthd. Code/POC: 087 / 1 (170 / 3) 063 / 1 Start Date: 5-1-1994 (6-15-2010) 4-1-1994

El Dorado County / CBSA: Sacramento-Arden-Arcade-Rosev ille Metropolitan Statistical Area Cool-Highway 193 Spatial Scale: REG 38.8906, -121.0000 Samp. Method: UV 060170020 Mthd. Code/POC: 087 / 1 Start Date: 6-1-1996

Echo Summit Spatial Scale: REG 38.8117, -120.0331 Samp. Method: UV 060170012 Mthd. Code/POC: 087 / 1 Start Date: 5-7-2006

Placerville-Gold Nugget Way Spatial Scale: REG 38.7247, -120.8219 Samp. Method: UV 060170010 Mthd. Code/POC: 087 / 1 Start Date: 2-1-1992

Mariposa County / Not in a CBSA Jerseydale-6440 Jerseydale Spatial Scale: REG 37.5466, -119.8416 Samp. Method: UV 060430006 Mthd. Code/POC: 087 / 1 Start Date: 7-1-1995

Yosemite National Park-Turtleback Dome Spatial Scale: REG 37.7133, -119.7058 Samp. Method: UV 060430003 Mthd. Code/POC: 047 / 1 Start Date: 11-1-1988

Yosemite Village-Visitor Center Spatial Scale: (NGH) NGH 37.7486, -119.5869 Samp. Method: (BAM) SI 060431001 Mthd. Code/POC: (731 / 3) 063 / 2 Start Date: (2-2-2002) 1-28-1989

### _______________________________________________________________________ 21 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 4 (cont.) Additional Information about the Monitors (Monitors reporting data in 2012)

OZONE CO NO2 SO2 PM2.5* PM10* Station/Geographical Coordinates/AQS Site # 44201 42101 42602 42401 88101/88501 81102

Nevada County / CBSA: Truckee-Grass Valley Micropolitan Statistical Area Grass Valley-Litton Building Spatial Scale: URB NGH:(NGH) 39.2336, -121.0555 Samp. Method: UV SCH:(BAM) 060570005 Mthd. Code/POC: 087 / 1 117 / 1: (731 / 3) Start Date: 6-1-1993 12-30-98:(7-1-07)

Truckee-Fire Station Spatial Scale: NGH:(NGH) 39.3274, -120.1847 Samp. Method: SQ:(BAM) 060571001 Mthd. Code/POC: 118 / 1:(731 / 3) Start Date: 3-31-99:(1-1-07)

White Cloud Mountain Spatial Scale: REG 39.3181, -120.8456 Samp. Method: UV 060570007 Mthd. Code/POC: 087 / 1 Start Date: 6-1-1995

Placer County / CBSA: Sacramento-Arden-Arcade-Rosev ille Metr opolitan Statistical Area Colfax-City Hall Spatial Scale: URB (NGH) NGH 39.0997, -120.9541 Samp. Method: UV (BAM) SI 060610004 Mthd. Code/POC: 087 / 1 (731 / 3) 063 / 1 Start Date: 1-1-1992 (1-1-2012) 1-1-2012

Plumas County / Not in a CBSA Chester-222 1st Avenue Spatial Scale: (NGH) 40.3097, -121.2277 Samp. Method: (BAM) 060631007 Mthd. Code/POC: (731 / 3) Start Date: (1-1-2007)

Portola-161 Nevada Street Spatial Scale: NGH:(NGH) 39.8083, -120.4717 Samp. Method: SCH:(BAM) 060631009 Mthd. Code/POC: 118 / 1:(731 / 3 ) Start Date: 1-18-07:(9-1-03)

Quincy-N Church Street Spatial Scale: NGH:(NGH) 39.9397, -120.9441 Samp. Method: SQ:(BAM) 060631006 Mthd. Code/POC: 118 / 1:(731 / 3) Start Date: 3-26-99:(1-1-07)

Tuolumne County / CBSA: Phoenix Lake-Cedar Ridge Micropolitan Statistical Area Sonora-Barretta Street Spatial Scale: NGH 37.9819, -120.3786 Samp. Method: UV 061090005 Mthd. Code/POC: 087 / 1 Start Date: 7-1-1992

NORTH COAST AIR BASIN Mendocino County / CBSA: Ukiah Micropolitan Statistical Area Fort Bragg-Dana Street Spatial Scale: (NGH) 39.4373, -123.7877 Samp. Method: (BAM) 060450010 Mthd. Code/POC: (122 / 1) Start Date: (8-17-2011)

Ukiah-County Library Spatial Scale: (NGH) 39.1511, -123.2066 Samp. Method: (BAM) 060450006 Mthd. Code/POC: (170 / 3) Start Date: (12-31-2008)

Ukiah-East Gobbi Street Spatial Scale: URB 39.1447, -123.2002 Samp. Method: UV 060450008 Mthd. Code/POC: 087 / 1 Start Date: 8-1-1992

Willits- 125 East Commercial Street Spatial Scale: (NGH) 39.4118, -123.3528 Samp. Method: (BAM) 060452002 Mthd. Code/POC: (170 / 3) Start Date: (9-15-2009)

Sonoma County / CBSA: Santa Rosa Metropolitan Statistical Area Cloverdale-100 Washington Street Spatial Scale: NGH 38.8047, -123.0177 Samp. Method: SI 060970001 Mthd. Code/POC: 063 / 2 Start Date: 1-1-1990

### _______________________________________________________________________ 22 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 4 (cont.) Additional Information about the Monitors (Monitors reporting data in 2012)

OZONE CO NO2 SO2 PM2.5* PM10* Station/Geographical Coordinates/AQS Site # 44201 42101 42602 42401 88101/88501 81102

Guerneville-Church and 1st Spatial Scale: NGH 38.5016, -122.9977 Samp. Method: SI 060973002 Mthd. Code/POC: 063 / 1 Start Date: 4-1-1990

Healdsburg-133 Matheson Street Spatial Scale: NGH 38.6111, -122.8686 Samp. Method: SI 060970002 Mthd. Code/POC: 063 / 2 Start Date: 5-21-1988

Healdsburg-Municipal Airport Spatial Scale: URB 38.6536, -122.9005 Samp. Method: UV 060971003 Mthd. Code/POC: 087 / 1 Start Date: 6-1-1991

NORTHEAST PLATEAU AIR BASIN Siskiyou County / Not in a CBSA
Yreka-Foothill Drive Spatial Scale: NGH NGH NGH 41.7267, -122.6336 Samp. Method: UV SQ SI 060932001 Mthd. Code/POC: 087 / 1 117 / 1 063 / 2 Start Date: 1-1-1981 8-21-2008 1-1-1988

SACRAMENTO VALLEY AIR BASIN Butte County / CBSA: Chico Metropolitan Statistical Area Chico-East Spatial Scale: URB NGH NGH NGH:(NGH) NGH 39.7616, -121.8405 Samp. Method: UV IR CL SCH:(BAM) SI 060070008 Mthd. Code/POC: 087 / 1 593 / 1 099 / 3 118 / 1:(731 / 3) 063 / 1 Start Date: 6-1-2012 6-1-2012 6-8-2012 4-27-12:(6-1-12) 5-27-2012

Gridley-Cowee Avenue Spatial Scale: (NGH) 39.3272, -121.6686 Samp. Method: (BAM) 060074001 Mthd. Code/POC: (731 / 3) Start Date: (3-1-2001)

Paradise-4405 Airport Road Spatial Scale: REG 39.7141, -121.6177 Samp. Method: UV 060070007 Mthd. Code/POC: 087 / 1 Start Date: 5-1-2000

Paradise-6701 Clark Road Spatial Scale: (NGH) 39.7788, -121.5906 Samp. Method: (BAM) 060072002 Mthd. Code/POC: (731 / 3) Start Date: (9-9-2010)

Colusa County / Not in a CBSA Colusa-Sunrise Blvd Spatial Scale: REG NGH:(NGH) REG 39.1888, -121.9980 Samp. Method: UV SQ:(BAM) SI 060111002 Mthd. Code/POC: 087 / 1 118 / 1:(731 / 3) 063 / 2 Start Date: 7-1-1996 12-16-98:(10-12-04 ) 5-1-1988

Glenn County / Not in a CBSA
Willows-E Laurel Street Spatial Scale: URB (NGH) REG 39.5172, -122.1897 Samp. Method: UV (BAM) SI 060210003 Mthd. Code/POC: 087 / 1 (731 / 3) 063 / 1 Start Date: 9-13-2006 (9-13-2006) 9-14-2006

Placer County / CBSA: Sacramento-Arden-Arcade-Rosev ille Metr opolitan Statistical Area
Auburn-Atwood Spatial Scale: URB (NGH) 38.9356, -121.0995 Samp. Method: UV (BAM) 060610003 Mthd. Code/POC: 087 / 1 (170 / 1) Start Date: 6-24-2011 (6-24-2011)

Auburn-B Avenue Spatial Scale: NGH 38.9394, -121.1055 Samp. Method: SI 060610002 Mthd. Code/POC: 063 / 1 Start Date: 1-1-2012

Lincoln-1st Street Spatial Scale: URB (NGH) 38.8856, -121.3020 Samp. Method: UV (BAM) 060612002 Mthd. Code/POC: 087 / 1 (731 / 3) Start Date: 12-21-2012 (12-21-2012)

### _______________________________________________________________________ 23 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 4 (cont.) Additional Information about the Monitors (Monitors reporting data in 2012)

OZONE CO NO2 SO2 PM2.5* PM10* Station/Geographical Coordinates/AQS Site # 44201 42101 42602 42401 88101/88501 81102

Roseville-N Sunrise Blvd Spatial Scale: URB NGH NGH:(NGH) URB 38.7461, -121.2647 Samp. Method: UV CL SCH:(BAM) SI 060610006 Mthd. Code/POC: 087 / 1 099 / 1 117 / 1:(731 / 3) 063 /1 Start Date: 1-13-1993 1-13-1993 12-31-98:(6-23-04) 1-13-1993

Shasta County / CBSA: Redding Metropolitan Statistical Area Anderson-North Street Spatial Scale: NGH NGH 40.4531, -122.2986 Samp. Method: UV SI 060890007 Mthd. Code/POC: 087 / 1 063 / 1 Start Date: 5-1-1993 5-1-1993

Lassen Volcanic Natl Park-Manzanita Lake Spatial Scale: REG 40.5372, -121.5764 Samp. Method: UV 060893003 Mthd. Code/POC: 047 / 1 Start Date: 11-1-1987

Redding-Health Department Roof Spatial Scale: NGH NGH NGH 40.5514, -122.3808 Samp. Method: UV SCH SI 060890004 Mthd. Code/POC: 087 / 1 117 / 1 063 / 1 Start Date: 5-1-1990 12-19-1998 1-1-1988

Shasta Lake-13791 Lake Blvd Spatial Scale: NGH 40.6894, -122.4011 Samp. Method: UV 060890009 Mthd. Code/POC: 087 / 1 Start Date: 4-1-2009

Shasta Lake-4066 La Mesa Avenue Spatial Scale: REG 40.6775, -122.3733 Samp. Method: SI 060890008 Mthd. Code/POC: 063 / 1 Start Date: 1-1-2004

Solano County / CBSA: Vallejo-Fairfield Metropolitan Statistical Area
Vacaville-Merc hant Street Spatial Scale: URB 38.3516, -121.9933 Samp. Method: SI 060953001 Mthd. Code/POC: 063 / 2 Start Date: 1-1-1988

Vacaville-Ulatis Drive Spatial Scale: URB 38.3583, -121.9500 Samp. Method: UV 060953003 Mthd. Code/POC: 087 / 1 Start Date: 7-21-2003

Sutter County / CBSA: Yuba City Metropolitan Statistical Area Sutter Buttes-S Buttes Spatial Scale: REG 39.1583, -121.7500 Samp. Method: UV 061010004 Mthd. Code/POC: 087 / 1 Start Date: 5-1-1993

Yuba City-Almond Street Spatial Scale: URB NGH NGH:(NGH) NGH 39.1388, -121.6191 Samp. Method: UV CL SCH:(BAM) SI 061010003 Mthd. Code/POC: 087 / 1 099 / 1 118 / 1:(731 / 3) 063 / 1 Start Date: 10-1-1989 10-1-1989 12-19-98:(6-14-04) 12-1-1989

Tehama County / CBSA: Red Bluff Micropolitan Statistical Area Red Bluff-Main Street Spatial Scale: (NGH) 40.1678, -122.2271 Samp. Method: (BAM) 061030006 Mthd. Code/POC: (170 / 3) Start Date: (1-1-2009)

Red Bluff-Oak Street Spatial Scale: URB 40.1749, -122.2366 Samp. Method: UV 061030005 Mthd. Code/POC: 087 / 1 Start Date: 2-1-1996

Red Bluff-Messer Drive Spatial Scale: NGH 40.1638, -122.2213 Samp. Method: SI 061030002 Mthd. Code/POC: 063 / 2 Start Date: 1-1-1998

### _______________________________________________________________________ 24 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 4 (cont.) Additional Information about the Monitors (Monitors reporting data in 2012)

OZONE CO NO2 SO2 PM2.5* PM10* Station/Geographical Coordinates/AQS Site # 44201 42101 42602 42401 88101/88501 81102

Tuscan Butte Spatial Scale: REG 40.2622, -122.0928 Samp. Method: UV 061030004 Mthd. Code/POC: 087 / 1 Start Date: 6-1-1995

Yolo County / CBSA: Sacramento-Arden-Arcade-Rosev ille Metr opolitan Statistical Area Davis-UCD Campus Spatial Scale: URB NGH (NGH) 38.5352, -121.7730 Samp. Method: UV CL (BAM) 061130004 Mthd. Code/POC: 087 / 1 099 / 1 (731 / 3) Start Date: 9-1-1987 5-21-1996 (8-14-2003)

West Sacramento-15th Street Spatial Scale: NGH 38.5713, -121.5258 Samp. Method: SI 061132001 Mthd. Code/POC: 063 / 1 Start Date: 9-1-1990

Woodland-Gibson Road Spatial Scale: URB NGH URB 38.6605, -121.7305 Samp. Method: UV SQ SI 061131003 Mthd. Code/POC: 087 / 1 118 / 1 063 / 1 Start Date: 5-27-1998 1-9-1999 10-26-1998



### Footnotes: This table only lists sites and monitors that have reported data in 2012. Lead monitors are not included in this list because there is no lead monitoring in the areas included in this report.
After a county name, the table lists t he U.S. Office of Management and Budget's Core-Based Statistical Area (CBSA) that includes the county. The term CBSA includes both Metropolitan Statistical Areas and Micropolitan Statistical Areas. A Metropolitan Statistical Area has at least one urban area with a popula tion of 50,000 or more. A Micropolitan Statistical Area has at least one urban area with a population of 10,000 to less than 50,000. *Monitoring information inside a parenthesis ( ) in a PM colu mn denotes that a continuous PM monitor is located at t he site. Monitoring information without a parenthesis reflects the filt er-based PM monitor. For si tes that have both continuous and filter-based PM monitors, the monitoring information are shown in the same column, separated by a colon (for example, NGH:(NGH)). Note that not all continuous PM 2.5 

### monitors are Federal Equivalent Methods (FEMs). While some continuous PM 2.5 

### monitors are non-FEMs, they are Ca lifornia Approved Samplers (CAS) and the data are used for State purposes. For example, the PM 2.5 

### data (88501) from the BAM 1020, method code 731, are considered non-FE Ms but these data are used in State designation calculations. Inversely, the continuous FEM PM 2.5 

### data (88101) from the Met One BAM, method code 170, are consider ed FEMs but these data are not used in State calculations. The table lists both types of continuous PM 2.5 

### monitors. PM 2.5 

### FEM monitors are purposely BOLD and italicized to distinguish them from the non-FEM monitors. All continuous PM 10 

### monitors are FEMs (i.e., TEOMs or BAMs).

### _______________________________________________________________________ 25 Annual Monito ring Network Report for Twenty-th ree Districts in California Codes used in Table 4

MIC Microscale MID Middle Scale NGH Neighborhood Scale URB Urban Scale REG Regional Scale

CL Chemiluminescent FL Fluoresecence IR Nondispersive infrared SCH Low volume single channel sampler, size selective inlet SI High volume sampler, size selective inlet SQ Low volume sequential sampler, size selective inlet UV Ultraviolet absorption XG X-ray fluorescence BAM Beta Attenuation Monitor TEOM Tapered Element Oscillating Microbalance Monitor

Method codes 047 Thermo Electron/Thermo Environmental Instr., Inc. Model 49, 49C, & 49i Ozone analyzer 063 Anderson-General Metal Works Model 1200 High Volume sample r 077 Advance Pollution Instruments Model 100 SO2 analyzer 087 Teledyne -Advance Pollution Instuments Model 400 or T400 Ozone analyzer 093 Advance Pollution Instruments Model 300, GFC CO analyzer 098 Rupprecht & Patashnick Partisol Model 2000 Air Sampler 099 Advance Pollution Instruments Model 200A NO analyzer 117 Rupprecht & Patashnick Model 2000 PM2.5 Air Sampler 118 Rupprecht & Patashnick Plus Model 2025PM SEQ PM2.5 Air sampler 122 Met One BAM/GBAM Model 1020 Monitor 141 Tisch EnvironmentalModel TE-6070 PM10 High-Volume Sampler 170 Met One BAM Model 1020 Monitor PM2.5 VSCC FEM 593 Advance Pollution Instruments Model 300 EU, GFC CO analyzer 731 Met One BAM-1020 Monitor W/PM2.5 SCC Sampling methods Spatial scales



### Note: POC stands for parameter occurr ence code. This code is used to differentiate between the numbers of physical monitors at a site that measure for the same pollutant. For example, the PM10 monitors at a collocated PM10 site will use different POCs to differenti ate between the primar y and secondary PM10 monitors.

### _______________________________________________________________________ 26 Annual Monito ring Network Report for Twenty-th ree Districts in California Section 5. Federal Mini mum Monitoring Requirements
For most pollutants, U.S. EPA has estab lished minimum monitoring requirements. These requirements are usually based on t he CBSA along with considerations of population, emissions, or current air qua lity. Minimum monitoring requirements for ozone, PM 2.5 

### , PM 10 

### , NO 2 

### , SO 2 

### and lead will be discussed in this section. In contrast, there are also monitoring requi rements that apply to an entire Primary Quality Assurance Organization (PQA O) or State or are based on ozone nonattainment classification, which wil l be discussed in the next section.

Federal Ozone, PM 10 

### , and PM 2.5 

### Monitoring Requirements
Requirements for the minimum numbers of monitors appear in Appendix D of Title 40, Part 58 of the CFR. For pur poses of the minimum requirements, the areas are defined by the CBSAs devel oped by the OMB (more information on CBSAs appears on page 10). For ozone, PM 2.5 

### , continuous PM 2.5 

### and PM 10 

### , the required minimum number is based on the population of an area and the severity of the air quality for the pollutant in t he area. For the CBSAs included in this report, Table 5 summarizes the number of existing O 3 

### , PM 2.5 

### , continuous PM 2.5 

### and PM 10 

### monitors and the number required by federal regulations. For a complete list of CBSAs in California, see Table 5a. Table 5a also lists information regarding CBSAs that are incl uded in other district network plans. Note that this report only includes nine CBSAs, of whic h five CBSAs are partially covered in this report and parts are covered in the net work reports being completed by other air districts.

More detailed information on the ozone, PM 2.5 

### , continuous PM 2.5 

### and PM 10 

### monitoring requirements and compliance wit h federal requirements can be found in Appendix B of this report. The tables in Appendix B list the CBSA, population of the CBSA and minimum monitoring requi rement information. In addition, Appendix B also lists the monitoring sites for which are counted towards federal minimum monitoring requirements. The nu mber of required monitors is based on the population of the CBSA, taken from the 2010 U.S. Census, in combination with the degree to which air quality in t he CBSA is greater or less than the national air quality standards. In all case s, sufficient monitoring exists and no additional monitoring is required.

### _______________________________________________________________________ 27 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 5 Numbers of Required and Existing Sites by Core Based Statistical Area (CBSA) (CBSAs that include the twenty-three air districts included in this report)

Core Based Statistical Area (CBSA) Pop. Ozone PM2.5 PM10 (SSI) 3

Required Existing Required Existing Required Existing Required Existing SLAMS 1 SLAMS SLAMS SLAMS Cont. 2 Cont. SLAMS SLAMS

Bakersfield* 839,361 2 8 2 4 1 3 1-2 4

Chico 220,000 1 2 1 1 1 3 0 1
Los Angeles-Long Beach-Anaheim* 12,828,837 4 19 3 12 2 7 2-4 11

Redding 177,223 1 4 0 1 0 0 0 3

Riverside-SanBernardinoOntario* 4,224,851 3 20 3 10 2 8 6-10 20

SacramentoArden ArcadeRoseville* 2,149,127 2 14 3 6 2 9 2-4 12

Santa Rosa* 483,878 1 2 0 1 0 1 0-1 3

Vallejo-Fairfield* 413,344 2 3 0 1 0 1 0-1 1

Yuba City 166,892 1 1 0 1 0 1 0 1



### Notes: 2010-2012 air quality data was used in determi ning the number of required sites.

This table excludes tri bal monitoring sites.
Population is based on year 2010 Census data.

*Parts of these CBSAs are included in the geographical scope of this report, and parts are within the geographical scope of reports being completed by the districts. The numbers of sites listed ar e for the entire CBSA. Table 5a shows the completed list of CBSAs in California.

1 

### SLAMS stands for State and Local Air Monitoring Stations.

2 

### Continuous refers to a continuous PM 2.5 

### monitor, i.e., one that measures hourly data. For this assessment, both continuous FEM and non-FEM PM 2.5 

### monitors were counted for each CBSA.

3 

### SSI stands for size selective inlet. The SSI is an FRM for PM 10



### .

### _______________________________________________________________________ 28 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 5a Core-Based Statistical Areas in California

CBSA Name County(ies) Included in the ARB plan? CBSA also included in which district's plan?

Bakersfield Kern Yes, partially San Joaquin Valley
Chico Butte Yes -- El Centro Imperial No Imperial
Fresno Fresno No San Joaquin Valley Hanford-Corcoran Kings No San Joaquin ValleyLos Angeles-Long BeachAnaheim Los Angeles and Yes, partially South Coast Orange
Madera Madera No San Joaquin Valley
Merced Merced No San Joaquin Valley
Modesto Stanislaus No San Joaquin Valley Napa Napa No Bay AreaOxnard-Thousand OaksVentura Ventura No Ventura County

Redding Shasta Yes --Riverside-San BernardinoOntario Riverside and Yes, partially South Coast San Bernardino

Sacramento-RosevilleArden Arcade El Dorado, Placer, Sacramento, and Yolo Yes, partially Sacramento Metropolitan

Salinas Monterey No Monterey Bay Unified San Diego-Carlsbad San Di ego No San Diego County

San Francisco-OaklandHayward Alameda, Contra Costa, Marin, San Francisco, and San Mateo No Bay Area

San Jose-Sunnyvale-Santa Clara Santa Benito and Santa Clara No Bay Area

San Luis Obispo-Paso Robles-Arroyo Grande San Luis Obispo No San Luis Obispo County

Santa Cruz-Watsonville Santa Cruz No Monterey Bay Unified Santa Maria-Santa Barbara Santa Barbara No Santa Barbara County

Santa Rosa Sonoma Yes, partially Bay Area
Stockton-Lodi San Joaquin No San Joaquin Valley Vallejo-Fairfield Solano Yes, partially Bay Area
Visalia-Porterville Tulare No San Joaquin Valley Yuba City Sutter and Yuba Yes --

### _______________________________________________________________________ 29 Annual Monito ring Network Report for Twenty-th ree Districts in California Federal Near-Road, Area-Wide an d Susceptible Population NO 2 

### Monitoring Requirements
There are new federal requirements for NO 2 

### near roadway monitors that are applicable in California. However, none of the 23 districts covered in this report are required to deploy near roadway monito rs. Near roadway monitors required for the Sacramento-Arden-Arcade-Roseville CBSA are being addressed by the Sacramento Metropolitan District. Near roadway monitors required for the Riverside-San Bernardino

- Ontario and Los Angeles-Long Beach-Santa Ana CBSAs are being addressed by the South Coas t District. Near roadway monitors required for the San Diego-Carlsbad-San Marcos CBSA are being addressed by the San Diego County District. Near roadway monitors required for the OxnardThousand Oaks-Ventura CBSA are being addressed by the Ventura County District. Near roadway monitors r equired for the San Francisco-OaklandFremont and San Jose-Sunnyvale-Santa Clara CBSAs are being addressed by the Bay Area District, and near roadway moni tors required in the Bakersfield, Fresno, Modesto, and Stockton CBSAs are being addressed by the San Joaquin Valley District. All six of these distri cts are preparing separate network plans and/or separate documents related to the implementation of the NO 2 

### near roadway requirements. Table 6 lists t he districts responsible for planning and implementing near-road NO 2 

### monitoring in California.

In addition, federal monitori ng regulations also require that there must be NO 2 

### monitoring at a location of expected highest NO 2 

### concentration representing the neighborhood or larger sp atial scales within each CB SA with a population of 1,000,000 or greater. There are three CBSAs included in this report that meet the population criteria: Los Angeles -Long Beach-Anaheim, Riverside-San Bernardino-Ontario, and Sa cramento-Roseville-Arden Arcade CBSA. Area-wide NO 2 

### monitoring in the Los Angeles- Long Beach-Anaheim and Riverside-San Bernardino-Ontario CBSAs is being addr essed by the South Coast District. Area-wide NO 2 

### monitoring in the Sacramento- Roseville-Arden Arcade CBSA is being addressed by the Sacramento Metropolitan District. There is no required NO 2 

### area-wide monitoring for the remaining CBSAs included in this network plan.
Finally, federal regulations also require that NO 2 

### monitoring is conducted in 40 locations throughout the United States in selected areas to pr otect susceptible and vulnerable populations. The locati ons of these areas are determined by each U.S. EPA Regional Administrator. In California, seven locations were selected to be part of the nationwi de network, which includes San Diego, Oakland, Long Beach, Los Angeles, San Bernardino, Parlier, and Bakersfield. The selected monitoring locations are lo cated in districts network plans.

### _______________________________________________________________________ 30 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 6 Near-Road NO 2 

### Monitoring Requirements in California

CBSA District Responsible for NO 2 NearRoad Monitoring Number of Required NO 2 Monitors

Bakersfield San Joaquin Valley Unified 1

Fresno San Joaquin Valley Unified 1

Los Angeles-Long Beach-Santa Ana South Coast 2

Modesto San Joaquin Valley Unified 1

Oxnard-Thousand

Oaks-Ventura Ventura County 1

Riverside-San

BernardinoOntario South Coast 2

SacramentoArden-ArcadeRoseville Sacramento Metro 1

San DiegoCarlsbad-San Marcos San Diego 2

San FranciscoOakland-Fremont Bay Area 2

San JoseSunnyvale-Santa Clara Bay Area 1

Stockton San Joaquin Valley Unified 1



### Federal CO and SO 2 

### Monitoring Requirements
Monitoring for carbon monoxide (CO) is only required at a select number of NO 2 

### near-road monitoring sites, beginning in the year 2015 (and continuing through 2017) and will be addressed in future network plans by the implementing agencies. Regardless of the future im plementation of the near-roadway CO and NO 2 

### requirements, California has and c ontinues to monitor for CO and NO 2



### . On June 2, 2010, the U.S. EPA published t he final rule for the revised federal SO 2 

### standard which specifies the minimum number of sites at which state and local air agencies must deploy SO 2 

### monitors. The monitori ng regulations require

### _______________________________________________________________________ 31 Annual Monito ring Network Report for Twenty-th ree Districts in California SO 2 

### monitors be placed in CBSAs bas ed on a population weighted emissions index (PWEI) for the area. The PWEI of a CBSA is ca lculated by multiplying the latest available SO 2 

### emission data within each CBSA by the population of the CBSA and then divided by one million. The final rule requires:

 Three SO 2 

### monitors in CBSAs with PWEI values of one million or more;

 Two SO 2 

### monitors in CBSAs with PWEI values less than one million but greater than 100,000; and

 One SO 2 

### monitor in CBSAs with PWEI values greater than 5,000 but less than 100,000.

California has thirty-five CBSAs with population ranging from 17,000 to more than 12 million people. Table 7 lists the CBSAs in California that require SO 2 

### monitoring. In addition, Table 7 s hows that these CBSAs exceed federal monitoring requirements for SO 2 

### . California’s monitoring network currently consists of more SO 2 

### monitors than the federal requirement. None of the areas included in this report are required to monitor for SO 2



### .

Table 7 Minimum Monitoring Requirements for SO 2

CBSA County(ies) Population (2010) SO2 emission per CBSA (tpy) PWEI (Millionpersonstpy) Number of Required Monitors Number of Active Monitors Number of Additional Monitors Needed
Los AngelesLong BeachSanta Ana Los Angeles and Orange 12,828,837 13,498 173,785 2 5 0

Riverside-San

BernardinoOntario Riverside and San Bernardino 4,224,851 2,478 10,266 1 4 0

SanFranciscoOaklandFremont Alameda, Contra Costa, San Francisco, San Mateo, and Marin 4,317,853 12,669 54,702 1 9 0

### _______________________________________________________________________ 32 Annual Monito ring Network Report for Twenty-th ree Districts in California Federal Lead Monitoring Requirements

On December 14, 2010, U.S. EPA finalized the rule for the revised federal lead (Pb) standard, which also specifies the monitoring requirements for Pb. While the final rule maintains the airport monito ring threshold at 1.0 ton per year (tpy), the rule lowers the industrial source-orient ed monitoring threshold from 1.0 tpy to 0.5 tpy. In addition, th e final rule replaces the population-based monitoring requirement with a requirement to moni tor for Pb at urban NCore sites.
The U.S. EPA selected 15 airports for a one-year study as part of the new Pb rule. Five airports are in California: Pa lo Alto Airport, McClellan-Palomar Airport, Reid-Hillview Airport, Gillespie Field Ai rport, and San Carlos Airport. None of these airports fall within the geographical scope of this report. With respect to source-oriented monitoring for Pb, the only stationary sources in California subject to the 0.5 tpy threshold are loca ted in the South Coast Air Basin. The South Coast annual network plan provides a description of their source-oriented lead monitors. The areas covered in this network plan are not required to conduct source-oriented lead monitoring.
Lastly, the final rule requires Pb monito ring at urban NCore sites. Urban NCore sites are those sites in a CBSA of 500,000 or more. Currently, there are six urban NCore sites in California, located in El Cajon, Fresno, Los Angeles, Riverside, Sacramento and San Jose. A seventh rura l NCore site is located at White Mountain Research Station. None of t hese NCore sites are located in areas covered by this network plan. More in formation on NCore sites is provided in Section 6 of this report.

### _______________________________________________________________________ 33 Annual Monito ring Network Report for Twenty-th ree Districts in California Section 6. Federal Monitoring Requireme nts at State-level or by PQAO or Area
Certain parts of 40 CFR 58 require that st ate and local agencies operate multi-pollutant monitoring sites, meet PM collocation requirements, as well as monitor at sites that are considered background, transport, or highest (maximum) concentration sites. The rest of this Section discusses these requirements.
Federal NCore Monitoring Re quirements for California

On October 17, 2006, U.S. EPA iss ued amendments to the ambient air monitoring requirements for criteria po llutants. These amendments are codified in 40 CFR Parts 53 and 58. One of t he most significant changes in the regulations was the requirement to estab lish a network of National Core (NCore) multi-pollutant monitoring stations. NCore sites include neighborhood and urban scale measurements in metropolitan areas and rural areas. Sites are long term and sited away from direct emission sour ces that could impact the ability to detect area-wide concentrations. Thes e stations provide data on several pollutants at lower detection limits and replace the National Air Monitoring Station (NAMS) network that had exis ted for many years.
Currently, in California, ther e are a total of seven monito ring sites that are part of the national NCore network. The seven NCo re sites are listed in Table 8 along with the agency that operates the site.

Table 8 NCore Monitoring in California

NCore Site Name NCore Type Agency Responsible for NCore Monitoring El Cajon Urban San Diego Fresno-Garland Urban ARB Los Angeles-North Main Urban South Coast

Riverside-Rubidoux Urban South Coast

Sacramento-Del

Paso Manor Urban Sacramento Metro San Jose Urban Bay Area White Mountain Research Station Rural Great Basin Unified

### _______________________________________________________________________ 34 Annual Monito ring Network Report for Twenty-th ree Districts in California 6.1 Federal Collocation R equirements for the ARB PQAO
Appendix A of 40 CFR 58 includes require ments for collocation of samplers as part of quality checks for the PM 2.5 

### , continuous PM 2.5 

### , PM 10 

### , and lead (Pb) monitoring networks. The CFR contains separate collocation requirements for these monitors. The requirements ar e to be met for eac h primary quality assurance organization (PQA O). Four PQAOs exist in California, one each for the San Francisco Bay Area AQMD, S an Diego County APCD, and South Coast AQMD, and one for the remainder of the State that is called the ARB PQAO.

PM 2.5 

### Collocation Status

For PM 2.5 

### , the CFR requires that for each type of PM 2.5 

### federal reference method (FRM), 15% of the sites within a PQAO have a colloca ted monitor of the same type. Three types of PM 2.5 

### FRMs exist currently in the ARB PQAO. Collocation requirements apply to each method type. The types of PM 2.5 

### samplers are: R&P Non-sequential (117), R&P Sequential (118), and Thermo Scientific (145). For method 117, the collocation site is Victor ville. For method 118, the collocation sites are: Bakersfield-California, Fresno-Garland, Sacramento-Del Paso Manor and Truckee. For method 145, both the Calexico-Ethel and Keeler sites are collocated with the same manual method. Table 9 shows that the ARB PQAO met the collocation requirement for PM 2.5 

### FRM. Also, Table 9 lists the collocation sites by method type.

Table 9 Collocation Requirements for PM 2.5 

### FRM

Method Code Number of Primary Monitors Number of Required Collocated

Monitors Number of Active Collocated

Monitors
117 9 1 1 118 25 4 4 145 2 1 2 Method 117 (R&P non-seq.): Victorville Method 118 (R&P seq.): Bakersfield, Fresno, Sacramento and Truckee Method 145 (Thermo): Calexico and Keeler
The CFR also requires that for each continuous PM 2.5 

### federal equivalent method (FEM), 15% of the sites must be collocated, but that the first collocation monitor is an FRM, the second an FEM, and so on alternating FRM with FEM as additional collocation monitors are required. At the time this report was drafted, 32 sites in the ARB PQAO operate continuous PM 2.5 

### FEM monitors and representing three method types. The three methods are the Met-One BAM (170), Thermo Scientific TEOM (181) and Grimm (195) of which 30 sites in the

### _______________________________________________________________________ 35 Annual Monito ring Network Report for Twenty-th ree Districts in California ARB PQAO are operating method 170 and one site each is operating method 181 and 195. For method 170, the 30 sites in the ARB PQAO require that five sites are collocated of which the first, third, and fifth collocations are between an FEM/FRM and the second and fourth collo cations are between an FEM/FEM.There are currently five FEM/FRM sites in the ARB PQAO: El Rio, FresnoGarland, Merced, Modesto and Thousand Oa ks. In addition, there is an FEM/FEM collocation site lo cated at the Stockton-Hazelton site. However, to meet this collocation requirement, t he ARB PQAO needs an additional FEM/FEM site. The ARB is evaluating monitoring lo cations in the ARB PQAO to determine where two continuous PM 2.5 

### FEM monitors could be added to the site without comprising other monitoring requirements.

For methods 181 and 195, which are locate d at the Keeler and Humboldt Hill sites, respectively, these sites would need to add a PM 2.5 

### FRM monitor to each of the sites to meet continuous PM 2.5 

### collocation requirement s. The Great Basin Unified District plans to discontinue one of the two PM 2.5 

### FRM monitors at the Keeler site and re-des ignate the continuous PM 2.5 

### FEM monitor as the primary monitor at this site to meet collocati on requirements. The North Coast Unified District plans to discontinue the PM 2.5 

### FRM at the Eureka-Jacob site and add it to the Humboldt Hill site to meet colloca tion requirements. Table 10 summarizes the collocation requirem ents for continuous PM 2.5 

### FEM in the ARB PQAO, also listing the names of the continuous PM 2.5 

### collocation sites.

Table 10 Collocation Requirements for continuous PM 2.5 

### FEM

Method

Code Number of Primary Monitors Number of Required Collocated

Monitors Number of Active Collocated FRM Monitors Number of Active Collocated FEM Monitors (same method designation as primary)

170 30 5 5 1 (need to add 1) 181 1 1 0 (need 1) 0 195 1 1 0 (need 1) 0 FEM/FRM sites: El Rio, Fresno, Merced, Modesto and Thousand Oaks FEM/FEM site: Stockton
California is a very large state in which environment al conditions (e.g., temperature, precipitation, hum idity, wind speeds, and elevation) vary widely and the composition of the PM 2.5 

### varies significantly. Also, a large number of operating agencies operate si tes in the statewide PM 2.5 

### network. ARB and local air districts designed the locations of collocated PM 2.5 

### samplers to strike a balance in adequately representing all of thes e factors. In this way, the quality control function of the collocated monitori ng is best realized. While Appendix A of 40 CFR 58 requires 80% of t he collocated monitors to be within + 20% of the

### _______________________________________________________________________ 36 Annual Monito ring Network Report for Twenty-th ree Districts in California applicable federal air quality standard, focusing on achieving this was deemed to result in too much clustering of the collo cated monitors in too few of the factors needing representation.

PM 10 

### Collocation Status
The CFR also requires that 15% of PM 10 

### sites with manual monitoring have collocated samplers. For this assessm ent, the ARB combines all of the PM 10 

### FRM monitors regardless of its method ty pe to get the total number of required collocation sites in the ARB PQ AO. Currently, there are 63 PM 10 

### FRM sites in the ARB PQAO of which five sites are already collocated. The collocation sites
are:

 Bakersfield-California

 El Capitan

 Fresno-Drummond

 Sacramento-Del Paso Manor

 Simi Valley

To meet the PM 10 

### collocation requirement, the ARB PQAO needs four additional PM 10 

### collocation sites. ARB is initiating a phased approach to meeting the PM 10 

### collocation requirement. The first step is to replace PM 10 

### FRM monitors with continuous PM 10 

### FEM monitors. Continuous moni tors are useful for real-time reporting and forecasting, and are less expensi ve to maintain compared to filter monitors. To supplement the existing PM 10 

### collocation network in the ARB PQAO, ARB plans to add some of the discontinued PM 10 

### FRM monitors to the existing PM 10 

### network to increase the number of collocation sites in the ARB PQAO. ARB will also coordinat e with the districts, if nece ssary, to ensure that the PM 10 

### collocation requirement is met. This proposal is detailed in Table 13 in Section 10 of this report.

Lead Collocation Status
On December 14, 2010, U.S. EPA finalized the rule for the revised federal lead (Pb) standard, which also specifies t he collocation requirements for Pb. The regulations specify that PQAO s that have a combination of source and non-source Pb sites have 15% of their Pb monitoring sites collocated. The regulations also require that the Pb network be treated independently from the PM network, and that the first collocation site be at the highes t Pb concentration site within the network. Mor eover, the regulations specif y that if a PQAO has no source or non-source Pb monitoring, and the only Pb monitoring is conducted at NCore sites, then the collocated Pb monitor must be of the same method designation as the primary Pb monitor.
The ARB PQAO requires no source or non-s ource Pb monitoring. However, the ARB PQAO does have two NCore sites which are located at Fresno-Garland and

### _______________________________________________________________________ 37 Annual Monito ring Network Report for Twenty-th ree Districts in California Sacramento-Del Paso Manor. The Pb ru le stated that PQAO s with only NCore and no source-oriented Pb monitoring do not have to collocate for Pb. The ARB PQAO does not require any collocation for Pb.
Federal Background, Transport, Ma x Concentration and Area-wide PM 2.5 

### Monitoring Requirements
Federal monitoring also required that the net work plan list sites in California that represent background, transport, ma ximum concentration or area-wide monitoring for PM 2.5 

### . From a statewide pers pective, background sites are intended to quantify regiona lly representative PM 2.5 

### concentrations for sites located away from populated areas and other significant emission sources. The following sites serve as regional background sites in California:
Northern California background site - Point Reyes National Seashore
Southern California background site – San Rafael Wilderness
For transport monitoring, ARB has identified two PM 2.5 

### sites covered in the geographical area of this report as transpor t sites. They are the Vallejo and Roseville sites, which captures polluta nt transport from the Bay Area to the Sacramento region and pollutant transport from Sacramento to the outlying areas of Sacramento, respectively. Finally, for maximum concentration and area-wide monitoring, ARB has identified six PM 2.5 

### sites. The maximum concentration and area-wide PM 2.5 

### sites covered in this report are listed below. Note that not all PM 2.5 

### sites are designated as background, transport, maximum concentration or area-wide. There are other monitoring purposes, for example quality assurance monitoring, a monitor can also serve.

Maximum-Concentration PM 2.5 

### Sites: Area-Wide PM 2.5 

### Sites: Portola Grass Valley Lancaster Ridgecrest Chico W oodland

### _______________________________________________________________________ 38 Annual Monito ring Network Report for Twenty-th ree Districts in California Section 7. Federal Air Quality Assurance
The information below, along with the info rmation available via the web link (http://www.arb.ca.gov/aaqm/qa/qa.htm), descr ibes the status of compliance with the requirements of 40 CFR 58, Appendice s A, C, and E. The annual network plan is required to include such information.

Overview
ARB’s Quality Management Branch (Q MB) conducts annual performance evaluations (audits) for each SO 2 

### , NO 2 

### , O 3 

### , H 2 

### S, and CO gaseous analyzer operating at ambient air monitoring stations. Semi-annual performance evaluations are conducted for each PM monitor operating at the stations. Each gaseous analyzer is audited at three le vels using known concentrations of National Institute of Standards and Techno logy (NIST) certified traceable gases while the PM monitor audits are conduct ed with a volumetric continuous flow device which is certified against NIST traceable primary standards. Additionally, laboratory mass analysis and meteorologic al performance audits are conducted annually. Laboratory audits utilize NIST ce rtified weights, a hygrometer, and a temperature sensor to verify the accu racy of the balances and relative humidity and temperature sensors. Meteorological audits are conducted with instruments that are NIST traceable and/or manufacturer-certified. All of the audits performed by QMB are conducted in accordanc e with the 40 CFR 58, Appendix A.
QMB also conducts system audits to determi ne whether a district’s air monitoring program satisfies the requirements of 40 CFR Part 58 and U.S. EPA's Quality Assurance Handbook for Air Pollution Measurement Systems, Volume II, December, 2008. Compliance with these regul ations is necessary if the data are to be considered data-for-record per the Cali fornia Code of Regulations (Title 17, Article 3, section 70301). Data meeting these require ments are eligible to be used in actions taken pursuant to t he federal and California Clean Air Acts.
If a discrepancy is identified during an audit an Air Quality Data Action (AQDA) request is issued to the station operator. All AQDA’s must be investigated and resolved to bring the station into compli ance. The station operator completes the AQDA by documenting the resolution, s pecifying the time period during which data was potentially affected, and reco mmending whether the data is to be released, flagged, corrected, or invalidat ed. QMB reviews the completed AQDA and discusses any concerns with the operator . A finalized copy of the AQDA is forwarded to the operator and the ARB’s Ai r Quality Analysis Section. Other issues identified outside of the audit process that may impact or potentially impact data quality is documented through the Corrective Action Notification (CAN) process.

### _______________________________________________________________________ 39 Annual Monito ring Network Report for Twenty-th ree Districts in California Air Monitoring Station Quality Assurance
In addition to the annual instrument performance audits, QMB conducts siting evaluations. Physical measurements and observations, including probe or sampler inlet or sensor height above ground level, distance from trees, type of ground cover, residence time, obstructions to air flow, distance to local sources, topography, vehicle counts, predominant win d direction, and probe material are noted on the site survey or accomp anying documentation to determine compliance with 40 CFR Part 58, Appendix E requirements.
QMB also ensures the quality of the data collected by the air monitoring stations operating in California through analysis of precision data submitted to the U.S. EPA’s Air Quality System (AQS) database. Precision checks for gaseous/continuous samplers are requir ed once every two weeks. These precision checks are conducted nightly at ARB and some district operated sites, and weekly or bi-weekly at other distri ct sites. Precision checks for noncontinuous, collocated particulate samplers are to be performed at least every twelfth day. QMB staff analyzes the precision dat a in accordance with 40 CFR 58, Appendix A.
Air monitoring staff performs a one-point fl ow rate verification check once every month on filter-based PM 10 

### and PM 2.5 

### monitors and twice a month on PM 10 

### BAM and PM 2.5 

### BAM automated analyzers. Air monitori ng staff reviews these data and takes corrective action when the results ex ceed U.S. EPA’s requirements. These flow rate verifications ar e used to assess bias of t he automated instruments in accordance with 40 CFR Part 58, Appendix A, 3.2.3. These bias estimates are further verified by the semi-annual flow ra te audits that are conducted five to seven months apart in each calendar y ear. In the course of auditing the PM 2.5 

### FRM and continuous samplers, the date of the last two flow rate and leak checks performed by the air monitoring staff ar e recorded. Any deviation of the CFR requirements discovered by QMB during these audits is addressed through an AQDA.
Information about each air monitoring stat ion audited by QMB is available at: http://www.arb.ca.gov/qaweb/site.php. Th is web page includes the map location of each site, latitude and longitude coor dinates as determined by GPS, site photos, and a detailed site survey of the physical parameters and conditions at each site.
The 2012 calendar year audit dates for both the gaseous analyzers and PM monitors operating at the monitoring sites covered in this report are provided in Table 11. Audit results are directly submitted to AQS quarterly per Appendix A of 40 CFR 58. In addition, as required by 40 CFR 58.15, ARB submits a data certification letter along with the required AQS reports (AMP450NC and AMP600) to U.S.EPA, annually.

### _______________________________________________________________________ 40 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 11 2012 Audit Date Information for the Monitors in this Plan

Site Name Gaseous Audit First Flow Audit Second Flow Audit Middletown-Anderson Springs 8/22/2012 2/22/2012 8/22/2012
Anderson-North Street 4/10/2012 4/10/2012 10/1/2012
Auburn 8/14/2012 2/8/2012 8/14/2012
Barstow 2/9/2012 2/9/2012 8/8/2012 Blythe-Murphy Street 2/7/2012
Canebrake 3/14/2012 9/10/2012
Chester 7/10/2012 12/6/2012
Chico-Manzanita 1/10/2012 1/10/2012 CLOSED
Cloverdale 5/23/2012 11/14/2012 Colfax-City Hall 8/15/2012 2/8/2012 8/15/2012
Colusa-Sunrise Blvd 9/26/2012 3/13/2012 9/26/2012 Cool (seasonal) 7/25/2012 Davis-UCD Campus 10/29/2012 4/26/2012 10/29/2012 Echo Summit (seasonal) 8/13/2012 Fort Bragg-N Franklin Street CLOSED
Glenbrook 8/22/2012 2/22/2012 8/22/2012 Grass Valley-Litton Building 7/23/2012 1/24/2012 7/23/2012 Gridley 3/13/2012 9/26/2012
Guerneville-Chur ch and 1st 5/22/2012 11/14/2012 Healdsburg - Matheson 5/22/2012 11/14/2012 Healdsburg-Municipal Airport 5/22/2012 Hesperia-Olive Street 2/22/2012 2/22/2012 8/7/2012
Jackson-Clinton Road 5/29/2012 Jerseydale 10/2/2012
Joshua Tree National Monument 2/8/2012 Lakeport-Lakeport Blvd 8/23/2012 2/22/2012 8/23/2012
Lancaster-Division Street 2/15/2012 2/15/2012 8/7/2012 // 9/11/2012
Lassen Volcanic National Park 4/10/2012 Lucerne Valley - Middle School 2/22/2012 8/8/2012 Mojave 3/15/2012 3/15/2012 9/11/2012 Paradise - Airport 7/18/2012 Phelan-Beekley Road & Phelan 2/14/2012 Placerville-Gold Nugget Way 8/16/2012
Portola - Nevada Street 7/10/2012 12/6/2012 Quincy-N Church Street 7/10/2012 12/6/2012
Red Bluff - Main Street 1/9/2012 7/16/2012
Red Bluff-Messer Drive 1/9/2012 7/16/2012
Red Bluff-Oak Street 7/16/2012

### _______________________________________________________________________ 41 Annual Monito ring Network Report for Twenty-th ree Districts in California

Site Name Gaseous Audit First Flow Audit Second Flow Audit Redding - Health Department 4/10/2012 4/10/2012 10/1/2012 Ridgecrest - California Ave 3/14/2012 9/11/2012
Roseville-N Sunrise Blvd 3/12/2012 3/12/2012 9/14/2012
San Andreas-Gold Strike Road 5/30/2012 5/30/2012 11/29/2012
Shasta Lake - Lake Blvd 4/9/2012
Shasta Lake-La Mesa 4/9/2012 10/1/2012
Sonora - Barretta Street 5/29/2012 South Lake Tahoe-Sandy Way 2/9/2012 8/13/2012 Sutter Buttes (seasonal) 9/19/2012 Trona - Athol/Telescope #2 12/18/2012 7/13/2012 12/18/2012
Truckee - Fire Station 7/12/2012 12/19/2012 Tuscan Butte (seasonal) 9/5/2012
Ukiah - Gobbi Street 5/23/2012 Ukiah - Library 5/23/2012 11/13/2012
Vacaville-Merchant Street 2/6/2012 7/17/2012
Vacaville-Ulatis Drive 7/17/2012
Victorville - Park Avenue 2/23/2012 2/23/2012 8/7/2012
West Sacramento-15th Street 2/6/2012 7/17/2012 White Cloud (seasonal) 7/12/2012
Willits - Justice Center 5/23/2012 11/13/2012
Willows-Colusa 7/19/2012 1/17/2012 7/19/2012
Woodland-Gibson Road 7/18/2012 1/17/2012 7/18/2012
Yosemite Natl Park-Turtleback 10/1/2012 Yosemite Village - Visitor Center 4/12/2012 10/1/2012
Yreka 4/11/2012 4/11/2012 10/3/2012 Yuba City 8/9/2012 1/10/2012 7/19/2012

### _______________________________________________________________________ 42 Annual Monito ring Network Report for Twenty-th ree Districts in California Section 8. Operating schedules
The CFR requires that the annual network plan include information about operating schedules. While gas eous monitors (e.g., O 3 

### , CO, NO 2 

### , SO 2 

### ) and particulate monitoring with FEMs usual ly operate continuously throughout the year, particulate monitoring with FRMs often operate one day out of every three days or one day out of every six days. The primary reason why particulate FRMs operate less frequently is that the particulate FRMs ar e filter-based and therefore much more labor intensive, requiring t hat field staff frequently retrieve and replace filters and that l aboratory staff pre- and pos t-weigh filters. The continuous gaseous and part iculate monitors produce hourly measurements of the gaseous and particulate pollu tants, while the particul ate filter-based monitors produce 24-hour measurements of particulate pollutants.
Particulate matter operating schedules
Current operating schedules for PM 2.5 

### FRM monitors in the areas included in this report are listed in Table 12. These sc hedules were obtained from the U.S. EPA’s AQS database. In March 2013, EPA pr ovided to ARB an annual network plan checklist which includes a finding t hat requires ARB to justify the reduced sampling frequency of the PM 2.5 

### FRM monitors that are co vered in this report for which are operating on a 1-in-6 day schedul e. Federal regulations required that PM 2.5 

### FRM monitors operate one day out of every three days unless certain monitoring criteria are met and U.S. EPA approves the sampling frequency reduction. The ARB is in the process of addressing this finding by requesting U.S. EPA approval for the reducti on of the sampling frequency for the PM 2.5 

### FRM monitors covered in this report.

While there are a number of continuous PM 2.5 

### monitors deployed, most of these are not federal equivalent me thods (FEM). In March of 2008, U.S. EPA approved the first continuous PM 2.5 

### FEM. Then on June 2009 and March 2011, U.S. EPA approved two more continuous PM 2.5 

### FEMs. At the time this report was drafted, in the ARB PQAO, ther e are 32 continuous PM 2.5 

### FEM sites. However, in the areas covered by this report, t here are only six continuous PM 2.5 

### FEM sites that are currently reporting data into the AQ S database. The six sites are Mojave, San Andreas, Ukiah, Willits, Auburn and Red Bluff.
Operating schedules for the manual PM 10 

### samplers in the areas included in this report all operate on a 1-in-6 day schedule. There ar e also six continuous PM 10 

### monitors operating in the area that this report covers, which are reporting data into AQS. These monitors are locat ed at the South Lake Tahoe, Fort Bragg, Mojave, Lancaster, Trona, and Victorville sites. These continuous PM 10 

### monitors are FEMs and are either BAM or TEOM monitors.

### _______________________________________________________________________ 43 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 12 Current PM 2.5 

### FRM Operating Schedules (Monitors of the air districts included in this report)

Site Name County AQS Site Number Current Laboratory Chico-East Butte 060070008 Everyday ARB Colusa-Sunrise Blvd Colusa 060111002 1 in 6 day ARB Grass Valley-Litton Building Nevada 060570005 1 in 6 day ARB Lakeport-Lakeport Blvd Lake 060333001 1 in 6 day LAKE COUNTY Lancaster-43301 Division St Los Angeles 060379033 1 in 6 day MOJAVE DESERT Portola-222 1st Avenue Plumas 060631007 1 in 3 day ARB Quincy-N Church Street Plumas 060631006 1 in 3 day ARB Redding-Health Department Roof Shasta 060890004 1 in 6 day ARB Ridgecrest-100 West California Kern 060290015 1 in 6 day SAN DIEGO COUNTY Roseville-N Sunrise Blvd Placer 060610006 1 in 6 day ARB Truckee-Fire Station Nevada 060571001 1 in 3 day ARB Victorville-14036 Park Ave San Bernardino 060710306 1 in 6 day MOJAVE DESERT Woodland-Gibson Road Yolo 061131003 1 in 6 day ARB Yreka-Foothill Drive Siskiyou 060932001 1 in 6 day ARB Yuba City-Almond Street Sutter 061010003 Everyday ARB



### Ozone operating schedules

While most O 3 

### monitors operate continuously all year, a small number of O 3 

### sites in the areas included in this report operat e only in the warmer six months of the year. Several of these sites are at higher elevation where access during the winter can be problematic. Also, for most of the State, O 3 

### is a summertime problem and concentrations during the winter are well below the levels of the ambient air quality standards. The following seasonal O 3 

### sites in the areas included in this report all oper ate from May through October:
Cool (El Dorado County) Echo Summit (El Dorado County) Jerseydale (Mariposa C ounty) Sutter Buttes (Sutter County) Tuscan Butte (Tehama County) White Cloud (Nevada Co unty)
In March 2013, EPA provided to ARB an annual network plan checklist which includes a finding that requires ARB to justify the monitoring schedule of the seasonal ozone sites that are covered in th is report. Federal regulations require that ozone monitors operate every day, from January through December, unless certain monitoring criteria are met and U.S. EPA approv es the seasonal schedule. ARB sent a request to the U.S. EPA on June 5, 2013, asking for

### _______________________________________________________________________ 44 Annual Monito ring Network Report for Twenty-th ree Districts in California approval of the monitoring schedule of t he seasonal ozone sites covered in this report.
On July 17, 2013, U.S. EPA approved the request. Both the request and approval letters are included in Appendix C of this report. Note that U.S. EPA had previously approved the seasonal oz one monitoring schedule at the Tuscan Butte site.

### _______________________________________________________________________ 45 Annual Monito ring Network Report for Twenty-th ree Districts in California Section 9. Additional information on PM 2.5 

### monitors

This section includes information for tw o required annual netwo rk plan elements that relate specifically to PM 2.5 

### and do not fit well elsewh ere in the report. One required element relates to whether data for a PM 2.5 

### monitor can be used to determine compliance with the national annual PM 2.5 

### air quality standard. In the CFR, this is termed as the suitability for comparison to the annual standard. The other element requires incl uding in the annual network plan information regarding the review process followed by air agencies when changes are made to the location of a PM 2.5 

### monitor that is violating a PM 2.5 

### standard.
9.1 Suitability for comparison to the annual PM 2.5 

### standard
The CFR requires that a PM 2.5 

### FRM or FEM monitor be located at a neighborhood scale in orderfor the data from the monitor to be used in regulatory determinations of compliance with the annual PM 2.5 

### standard. For a PM 2.5 

### monitor to be representative at a neighborhood scale, the concentration values measured by the monitor shoul d be representative of concentrations expected over an area with dimensions of a few kilometers. All of the PM 2.5 

### FRM monitors in California are sited to be representative of a neighborhood scale and meet this suitability requirement.
9.2 Review of changes to PM 2.5 

### network

The PM 2.5 

### network of FRM monitors in Califor nia was largely established in 1999 and completed in 2000. Little has changed in the siting of the FRM monitoring network between then and now. Howeve r, between 2008 and 2011, U.S. EPA approved three types of PM 2.5 

### FEMs, which are Met One (method 170), GRIMM (method 195) and Thermo (method 181). At t he time this report was drafted, five agencies (ARB, Eastern Kern, Mendocino County, Placer County and Tehama County) in the areas covered by this report have submitted data from these monitors to the AQS database. While there is interagency review of proposed changes to the State and Local Air Monitori ng Stations (SLAMS) network, i.e., the network that includes PM 2.5 

### as well as O 3 

### , CO, PM 10 

### , and other pollutants, no unique review process exists specially for PM 2.5 

### FRM or FEM monitors.
As part of ARB’s ongoing oversight pr ocess, ARB requests the opportunity to review and comment on the possible regul atory consequences of any proposal to move or discontinue a monitor for any pollu tant that violates a national or State air quality standard. Furthermore, when a local agency proposes to move or discontinue a monitor indicating the highes t concentrations of a pollutant in an area, ARB requests that the agency conduct a period of concurrent or parallel monitoring at that site and at the repl acement site being proposed to represent the area as the required high site for the pollutant. This is expected even when the site is close to but not exceeding any standard for the pollutant. The parallel

### _______________________________________________________________________ 46 Annual Monito ring Network Report for Twenty-th ree Districts in California monitoring is typically for a period of many months or a year, depending on the pollutant, the standard that is of most concern, and other factors.

### _______________________________________________________________________ 47 Annual Monito ring Network Report for Twenty-th ree Districts in California Section 10. Proposed and recently im plemented monitoring site changes
This section lists the proposed and re cently implemented monitoring site changes in the areas included in this repor t, as well as changes to the monitoring sites that the ARB conducts in areas outside the stated geographical scope of this report. Proposed monitoring site changes include proposals by the ARB or by districts that are covered in this r eport to add, remove, or move sites and/or monitors in the monitoring network before the end of 2014. Recently implemented monitoring changes include depl oyed and/or terminated sites and monitors in the monitoring network that the ARB has become aware of since last year’s report. Listed below are the proposed and implemented changes to the monitoring network for which ARB are aware of at this time. The ARB proposed or recently implemented the following network modifications:

 Terminated the ozone monitor at Ca lexico-East (060250006), which was approved by U.S. EPA on April 24, 2013. The approval letter is enclosed in Appendix C of this report.

 Relocated the Chico-Manzanita si te (060070002) to a new location on East Avenue due to siting issues which could not be rectified. The new site is called Chico-East (060070008), which is approximately 0.34 miles from the previous location. The AR B formally requested U.S. EPA, via a letter, to approve the relocation (enclose d in Appendix C of this report). In addition, the sampling frequency of the PM 2.5 

### monitor at this site was increased to everyday on January 1, 2013. Moreover, as agreed upon between U.S. EPA and ARB, the 2013 PM 2.5 

### design values will be calculated by combining the PM 2.5 

### data between the two Chico sites (2011 Chico-Manzanita data, 2012 combined data at Chico-Manzanita and Chico-East, and 2013 Chico-East data).

 Relocated the NCore monitoring station at Fresno-1 st 

### Street (060190008) to Fresno-Garland (060190011). On March 7, 2013, the U.S. EPA approved the relocation of the NCore site. The approval letter is enclosed in Appendix C of this report. In additi on, as agreed upon between U.S. EPA and ARB, the 2013 PM 2.5 

### design values will be calculated by combining the PM 2.5 

### data between the two Fresno sites (2011 Fresno-1 st 

### Street data and 2012-2013 Fresno-Garland data).

 Plans to transfer ownership of the Calexico-Ethel site to the Imperial County air district for maintenance and operation. The transfer process is still currently being discussed betw een ARB and Imperial County AQMD.

 Discontinued the PM 10 

### FRM monitors at Bakersfield-California Street and Fresno-Garland. However, due to the need of PM 10 

### ion data, ARB plans to reestablish PM 10 

### filter monitoring at these two sites.

### _______________________________________________________________________ 48 Annual Monito ring Network Report for Twenty-th ree Districts in California  Finally, ARB implemented or pl ans to implement the following modifications to the ARB network as listed in Table 13.

Table 13 ARB Proposed and Implem ented Network Changes AQS Site # Site Name Parameter Stop date Start date

060070002 Chico Manzanita (site closed in 2012) CO May-12
NO2 May-12
PM10 May-12
Pb May-12
O3 Jul-12
PM2.5 Jul-12 PM2.5-Hrly Coll Jul-12
PM2.5 HiVol Jul-12
PM10-HiVol May-12
Pb May-12

060070008 Chico East PM2.5-Hrly Apr-12 PM2.5-Hrly Coll Apr-12
NO2 Jun-12
O3 Jun-12
Pb Jun-12
Trace CO Aug-12
PM2.5-HiVol Apr-12
PM10-HiVol May-12
Pb Jun-12

060111002 Colusa PM10-HiVol 2013
PM10-BAM 2013

060831008 Santa Maria PM10-HiVol discontinued
CO Aug-12
TCO Sep-12 060830011 Santa Barbara TCO Nov-12

060771002 Stockton CO May-12
TCO Jun-12
PM10-HiVol 2013
PM10-BAM 2013

061072002 Visalia PM10-HiVol 2013
PM10-BAM 2013

060210003 Willows PM10-HiVol 2013
PM10-BAM 2013

060431001 Yosemite PM10-HiVol 2013
PM10-BAM 2013

### _______________________________________________________________________ 49 Annual Monito ring Network Report for Twenty-th ree Districts in California Table 13 (cont.) ARB Proposed and Implem ented Network Changes AQS Site # Site Name Parameter Stop date Start date

060190008 Fresno First (site closed in 2012) SO2 Jan-12
NO2 Jan-12
O3 Jan-12 PM2.5 hourly Jan-12 PM2.5 HiVol Primary Jan-12

PM2.5 HiVol Coll Jan-12
CO Feb 2012

060190011 Fresno Garland SO2 Jan-12
NO2 Jan-12
O3 Jan-12 PM2.5 hourly Jan-12 PM2.5 HiVol Primary Jan-12

PM2.5 HiVol Coll Jan-12 PM10-Coarse Coloc 2013

Pb Jan-12
CO Jan-12
SO2 Jan-12
NO2 Jan-12
061010003 Yuba City PM10-HiVol 2013
PM10-BAM 2013

060990005 Modesto PM10-HiVol 2013
PM10-BAM 2013 060290011 Mojave PM10-HiVol discontinued

060290232 Oildale PM10-HiVol 2013
PM10-BAM 2013 060790005 Paso Robles PM10-HiVol discontinued

060610006 Roseville PM10-HiVol 2013
PM10-BAM 2013

060670010 Sacramento PM10-HiVol Jun-13
PM10-BAM Jun-13

060090001 San Andreas PM10-HiVol 2013
PM10-BAM 2013 060792006 San Luis Obispo PM10-HiVol discontinued

### _______________________________________________________________________ 50 Annual Monito ring Network Report for Twenty-th ree Districts in California Proposed or Implement ed District Changes:
The Antelope Valley APCD replaced the continuous PM 10 

### TEOM with a continuous PM 10 

### BAM at the Lancaster site due to equipment failure.
The Mojave Desert AQMD plans to replace the PM 10 

### FRM monitors at the Barstow, Hesperia, Lucerne Valley, Trona and Victorville sites with continuous PM 10 

### BAM monitors. In addition, Mojave Desert AQMD replaced the continuous PM 10 

### TEOM monitor at the Trona and Vi ctorville sites with continuous PM 10 

### BAM monitors on 12/3/2012 and 9/29/2012, respectively. Mojave Desert AQMD plans to transition its PM 10 

### FRM network to a continuous PM 10 

### BAM network and anticipates submitting both standard and local conditions PM 10 

### BAM data from its network.
The Placer County APCD di scontinued ozone monitoring at the Auburn-C Dewitt (060610002) site in December 2012 and established ozone monitoring at the Auburn-Atwood Street site (060610003) in January 2013. In addition, the Placer County APCD plans to establish a permanent site in Tahoe City to monitor for ozone and PM 2.5



### . The Tehama County APCD plans to relocate the ozone, PM 2.5 

### BAM, and PM 10 

### monitors from three different locations in t he city of Red Bluff to a central location in the same city consolidating all m onitoring at the new district headquarters, approximately two miles northwest of the current location.

### _______________________________________________________________________ 51 Annual Monito ring Network Report for Twenty-th ree Districts in California Section 11. Access to more information about the network
While this report includes a great deal of information about the ambient air quality monitoring network, much more informa tion is readily available, including summaries of the pollutant dat a from the monitors around t he State. Much of this information is available on the web. This section lists a number of additional sources of such information. Also list ed is contact information for the agencies responsible for the monitori ng covered in this report.
ARB’s Monitoring and Laboratory Division (MLD) maintains web pages with information about all the existing monitori ng sites that routinely monitor and submit air quality data in Ca lifornia. The pages also include detailed local maps showing the location of the sites. This information can be found at: http://www.arb.ca.gov/aaqm/mldaqsb/amn.htm . A more general MLD web page that provides links to other aspects of ambient monitoring is located at: http://www.arb.ca.gov/aaqm/aaqm.htm

. Summaries of the official air quality data from sites around the State can be found at: http://www.arb.ca.gov/adam/welcome.html . Summaries of the most recent preliminary data can be viewed at: http://www.arb.ca.gov/aqd/aqinfo.htm . These last two sources of information are main tained by ARB staff of the Air Quality Planning and Science Division, as is t he following more general web page that lists links to other aspects of t he ambient air quality data program: http://www.arb.ca.gov/aqd/aqdpage.htm

.

### _______________________________________________________________________ 52 Annual Monito ring Network Report for Twenty-th ree Districts in California Agency contact for ARB
Regarding this report and questions relating to the collected ambient air quality data: Pheng Lee, Air Pollution Specialist, plee@arb.ca.gov , (916) 445-6059
Regarding the collection of the ambient data: Ken Stroud, Chief, Air Quality Surveillance Branch, kstroud@arb.ca.gov

, (916) 324-7591
Regarding quality oversight of the monitoring program: Mike Miguel, Chief, Qua lity Management Branch, mmiguel@arb.ca.gov

, (916) 322-0960
Agency contacts for the air districts covered in this report
Amador County Air Pollution Co ntrol District, Jackson, CA Mike Boitano, Interim Air Pollution Control Officer AirDistrict@co.amador.ca.us (209) 257-0112
Antelope Valley Air Quality Management District, Lancaster, CA Eldon Heaston, Air Pollution Control Of ficer (also APCO for Mojave Desert) eheaston@mdaqmd.ca.gov (661) 723-8070
Butte County Air Quality M anagement District, Chico, CA Jim Wagoner, Air Pollution Control Officer jwagoner@bcaqmd.org (530) 332-9400
Calaveras County Air Pollution C ontrol District, San Andreas, CA Brian Moss, Air Pollution Control Officer bmoss@co.calaveras.ca.us (209) 754-6504
Colusa County Air Pollution Control District, Colusa, CA Harry Krug, Air Pollution Control Officer hak@countyofcolusa.org (530) 458-0590

Eastern Kern Air Pollution Control District, Bakersfield, CA Glen Stephens, Air Pollution Control Officer glens@co.kern.ca.us (661) 862-5250

### _______________________________________________________________________ 53 Annual Monito ring Network Report for Twenty-th ree Districts in California El Dorado County Air Quality M anagement District, Placerville, CA Dave Johnston, Air Pollution Control Officer dave.johnston@edcgov.us (530) 621-5896
Feather River Air Quality Manage ment District, Yuba City, CA Christopher Brown, Air Po llution Control Officer apco@fraqmd.org (530) 634-7659 x 203
Glenn County Air Pollution Control District, Willows, CA Jim Donnelly, Air Pollution Control Officer jdonnelly@countyofglenn.net (530) 934-6500
Lake County Air Quality Management District, Lakeport, CA Douglas Gearhart, Air Pollution Control Officer dougg@lcaqmd.net (707) 263-7000
Lassen County Air Pollution Cont rol District, Susanville, CA Dan Newton, Air Pollution Control Officer dnewton@cityofsusanville.org (530) 257-1045
Mariposa County Air Pollution Co ntrol District, Mariposa, CA Dr. Charles Mosher, Air Pollution Control Officer air@mariposacounty.org (209) 966-2220
Mendocino County Air Quality Management District, Ukiah, CA Robert Scaglione, Air Pollution Control Officer mcaqmd@co.mendocino.ca.us (707) 463-4354
Modoc County Air Pollution Control District, Alturas, CA Joe Moreo, Air Pollution Control Officer apcd@modoccounty.us (530) 233-5522
Mojave Desert Air Quality M anagement District, Lancaster, CA Eldon Heaston, Air Pollution Control Officer (also APCO for Antelope Valley) eheaston@mdaqmd.ca.gov (661) 723-8070

### _______________________________________________________________________ 54 Annual Monito ring Network Report for Twenty-th ree Districts in California Northern Sierra Air Quality Manag ement District, Grass Valley, CA Gretchen Bennitt, Air Pollution Control Officer Gretchen@myairdistrict.com (530) 274-9360
Northern Sonoma County Air Pollution Control District, Healdsburg, CA Barbara Lee, Air Pollution Control Officer nsc@sonic.net (707) 433-5911
Placer County Air Pollution Control District, Auburn, CA Tom Christofk, Air Pollution Control Officer pcapcd@placer.ca.gov (530) 745-2330
Shasta County Air Quality M anagement District, Redding, CA Russ Mull, Air Pollution Control Officer scdrm@snowcrest.net (530) 225-5789
Siskiyou County Air Pollution Co ntrol District, Yreka, CA Eric Olson, Air Pollution Specialist eolson@co.siskiyou.ca.us (530) 841-4031
Tehama County Air Pollution Co ntrol District, Red Bluff, CA Alan Abbs, Air Pollution Control Officer aabbs@tehcoapcd.net (530) 527-3717
Tuolumne County Air Pollution Control District, Columbia, CA Bill Sandman, Deputy Air Pollution Control Officer bsandman@co.tuolumne.ca.us (209) 533-5693
Yolo-Solano Air Quality Management District, Davis, CA Mat Ehrhardt, Air Pollution Control Officer meharhard@ysaqmd.org (530) 757-3673

### _______________________________________________________________________ 55 Annual Monito ring Network Report for Twenty-th ree Districts in California 

## APPENDIX A Regulatory language of 40 CFR 58.10 § 58.10 Annual monitoring network pl an and periodic network assessment.
(a)(1) Beginning July 1, 2007, the Stat e, or where applicable local, agency shall adopt and submit to the Regional Administra tor an annual monitoring network plan which shall provide for the establishment and maintenance of an air quality surveillance system that consis ts of a network of SLAMS monitoring stations including FRM, FEM, and ARM moni tors that are part of SLAMS, NCore stations, STN stations, State speciation st ations, SPM stations, and/or, in serious, severe and extreme ozone nonattainment areas, PAMS stations, and SPM monitoring stations. The plan shall in clude a statement of purposes for each monitor and evidence that siting and oper ation of each monitor meets the requirements of appendices A, C, D, and E of this part, where applicable. The annual monitoring network plan must be made available for public inspection for at least 30 days prior to submission to EPA.
(2) Any annual monitoring network pl an that proposes SLAMS network modifications (including new monitoring sites, new determinations that data are not of sufficient quality to be comp ared to the NAAQS, and changes in identification of monitors as suitable or not suitable for comparison against the annual PM 2.5 

### NAAQS) is subject to the approval of the EPA Regional Administrator, who shall provide oppor tunity for public comment and shall approve or disapprove the plan and schedule within 120 days. If the State or local agency has already provided a public comment opportunity on its plan and has made no changes subsequent to t hat comment opportunity, and has submitted the received comments t ogether with the plan, the Regional Administrator is not required to provide a separate opportunity for comment.
(3) The plan for establishing required NCo re multipollutant stations shall be submitted to the Administrator not later than July 1, 2009. The plan shall provide for all required stations to be operational by January 1, 2011.
(4) A plan for establishing source-oriented Pb monitoring sites in accordance with the requirements of appendix D to this pa rt for Pb sources emitting 1.0 tpy or greater shall be submitted to the EPA Regi onal Administrator no later than July 1, 2009, as part of the annual network pl an required in paragraph (a)(1) of this section. The plan shall provide for the required source-oriented Pb monitoring sites for Pb sources emitti ng 1.0 tpy or greater to be operational by January 1, 2010. A plan for establishing source-oriented Pb monitoring sites in accordance with the requirements of appendix D to this part for Pb sources emitting equal to or greater than 0.50 tpy but less than 1.0 tpy shall be submitted to the EPA Regional Administrator no later than July 1, 2011. The plan shall provide for the required source-oriented Pb monitoring site s for Pb sources emitting equal to or greater than 0.50 tpy but less than 1.0 tpy to be operational by December 27, 2011.

### _______________________________________________________________________ 56 Annual Monito ring Network Report for Twenty-th ree Districts in California (5)(i) A plan for establishing or identifying an area-wide NO 2 

### monitor, in accordance with the requirements of Appendix D, section 4.3.3 to this part, shall be submitted as part of the Annual Moni toring Network Plan to the EPA Regional Administrator by July 1, 2012. The plan s hall provide for thes e required monitors to be operational by January 1, 2013.
(ii) A plan for establishing or identifying any NO 2 

### monitor intended to characterize vulnerable and susceptible p opulations, as required in Appendix D, section 4.3.4 to this part, shall be subm itted as part of the Annual Monitoring Network Plan to the EPA Regional Administrator by July 1, 2012. The plan shall provide for these required monitors to be operational by January 1, 2013.
(iii) A plan for establis hing a single near-road NO 2 

### monitor in CBSAs having 1,000,000 or more persons, in accordance with the requirements of Appendix D, section 4.3.2 to this part, shall be subm itted as part of the Annual Monitoring Network Plan to the EPA Regional Administrator by July 1, 2013. The plan shall provide for these required monitors to be operational by January 1, 2014.
(iv) A plan for establishing a second near-road NO 2 

### monitor in any CBSA with a population of 2,500,000 or more per sons, or a second monitor in any CBSA with a population of 500,000 or mo re persons that has one or more roadway segments with 250,000 or greater AADT counts, in accordance with the requirements of Appendix D, section 4.3.2 to this part, shall be submitted as part of the Annual Monitoring Network Plan to t he EPA Regional Administrator by July 1, 2014. The plan shall provide for these r equired monitors to be operational by January 1, 2015.
(v) A plan for establishing a single near-road NO 2 

### monitor in all CBSAs having 500,000 or more persons, but le ss than 1,000,000, not already required by paragraph (a)(5)(iv) of this section, in accordance with the requirements of Appendix D, section 4. 3.2 to this part, shall be subm itted as part of the Annual Monitoring Network Plan to the EPA Region al Administrator by July 1, 2016. The plan shall provide for these monitors to be operational by January 1, 2017.
(6) A plan for establishing SO 2 

### monitoring sites in accordance with the requirements of appendix D to this part s hall be submitted to the EPA Regional Administrator by July 1, 2011 as part of the annual network plan required in paragraph (a) (1). The plan shal l provide for all required SO 2 

### monitoring sites to be operational by January 1, 2013.
(7) A plan for establishing CO monitoring sites in accordance with the requirements of appendix D to this part s hall be submitted to the EPA Regional Administrator. Plans for required CO moni tors shall be submitted at least six months prior to the date such monitors must be established as required by section 58.13.

### _______________________________________________________________________ 57 Annual Monito ring Network Report for Twenty-th ree Districts in California (8)(i) A plan for establishing near-road PM 2.5 

### monitoring sites in CBSAs having 2.5 million or more persons, in accordance with the requirements of appendix D to this part, shall be submi tted as part of the annual monitoring network plan to the EPA Regional Admini strator by July 1, 2014. The plan shall provide for these required monitoring stations to be operational by January 1, 2015.
(ii) A plan for establishing near-road PM 2.5 

### monitoring sites in CBSAs having 1 million or more persons, but less than 2.5 million persons, in accordance with the requirements of appendix D to this pa rt, shall be submitt ed as part of the annual monitoring network plan to the EPA Regional Administrator by July 1, 2016. The plan shall provide for these required monitoring stations to be operational by January 1, 2017.
(b) The annual monitoring network plan must contain the following information for each existing and proposed site:
(1) The AQS site identification number.
(2) The location, including street address and geographical coordinates.
(3) The sampling and analysis method(s) for each measured parameter.
(4) The operating schedules for each monitor.
(5) Any proposals to remove or move a monitoring station within a period of 18 months following plan submittal.
(6) The monitoring objective and spatia l scale of representativeness for each monitor as defined in append ix D to this part.
(7) The identification of any sites that are suitable and sites that are not suitable for comparison against the annual PM 2.5 

### NAAQS as described in § 58.30.
(8) The MSA, CBSA, CSA or other area represented by the monitor.
(9) The designation of any Pb monito rs as either source-oriented or nonsource-oriented according to Appendix D to 40 CFR part 58.
(10) Any source-oriented monitors fo r which a waiver has been requested or granted by the EPA Regional Administ rator as allowed for under paragraph 4.5(a)(ii) of Appendix D to 40 CFR part 58.
(11) Any source-oriented or non-source-o riented site for which a waiver has been requested or granted by the EPA Regi onal Administrator for the use of

### _______________________________________________________________________ 58 Annual Monito ring Network Report for Twenty-th ree Districts in California Pb-PM 10 

### monitoring in lieu of Pb-TSP moni toring as allowed for under paragraph 2.10 of Appendix C to 40 CFR part 58.
(12) The identificat ion of required NO 2 

### monitors as near-road, area-wide, or vulnerable and susceptible population moni tors in accordance with Appendix D, section 4.3 of this part.
(13) The identific ation of any PM 2.5 

### FEMs and/or ARMs used in the monitoring agency's network where the data are not of sufficient quality such that data are not to be compared to the N AAQS. For required SLAMS where the agency identifies that the PM 2.5 

### Class III FEM or ARM does not produce data of sufficient quality for comparison to t he NAAQS, the monitoring agency must ensure that an operating FRM or filter-based FEM meet ing the sample frequency requirements described in § 58.12 or other Class III PM 2.5 

### FEM or ARM with data of sufficient quality is operating and r eporting data to meet the network design criteria described in appendix D to this part.
(c) The annual monitoring network plan must document how state and local agencies provide for the review of changes to a PM 2.5 

### monitoring network that impact the location of a violating PM 2.5 

### monitor. The affected state or local agency must document the process for obtaining public comment and include any comments received through the public notification process within their submitted plan.
(d) The state, or where applicable lo cal, agency shall perform and submit to the EPA Regional Administrator an asse ssment of the air quality surveillance system every 5 years to determine, at a minimum, if the network meets the monitoring objectives defined in appendix D to this part, whether new sites are needed, whether existing sites are no longer needed and can be terminated, and whether new technologies are appropriate for incorporation into the ambient air monitoring network. The network assessment mu st consider the ability of existing and proposed sites to support ai r quality characterization for areas with relatively high populations of susceptib le individuals (e.g., child ren with asthma), and, for any sites that are being proposed for di scontinuance, the effect on data users other than the agency itself, such as nearby states and tribes or health effects studies. The state, or wher e applicable local, agency must submit a copy of this 5-year assessment, along with a revised an nual network plan, to the Regional Administrator. The assessments are due ever y five years beginning July 1, 2010.
(e) All proposed additions and discontinuatio ns of SLAMS monitors in annual monitoring network plans and periodic net work assessments are subject to approval according to § 58.14.

### _______________________________________________________________________ 59 Annual Monito ring Network Report for Twenty-th ree Districts in California 

## APPENDIX B

For ozone, PM 10 

### , and PM 2.5 

### , the required minimum num ber of monitors are based on the population of the core- based statistical area (CBSA) and the severity of the air quality for the pollutant in the CBSA. The tables below list the CBSAs, population of the CBSAs, and the si te in each CBSA that is currently measuring the highest concentration. In all cases, sufficient monitoring exists, and no additional monitori ng is required.
Minimum Monitoring Requirements for O 3 

### , PM 10 

### , and PM 2.5

Ozone Minimum Monitoring Requirements for Ozone.

Bakersfield*^ Kern 839,361 0.093 ppm Edison 2 8 0 Chico Butte 220,000 0.077 ppm Paradise-4405 Airport Road 1 2 0Los Angeles-Long BeachAnahiem* Los Angeles and Orange 12,828,837 0.096 ppm Santa Clarita 4 19 0
Redding Shasta 177,223 0.069 ppm Shasta Lake-13791 Lake Blvd 1 4 0Riverside-San BernardinoOntario* Riverside and San Bernardino 4,224,851 0.106 ppm Crestline 3 20 0

Sacramento-Arden ArcadeRoseville* El Dorado, Placer, Sacramento, and Yolo 2,149,127 0.095 ppm Folsom-Natoma Street 2 14 0

Santa Rosa* Sonoma 483,878 0.047 ppm Santa Rosa-5th Street 1 2 0 Vallejo-Fairfield* Solano 413,344 0.068 ppm Fairfield-Chadbourne Road^^ 2 3 0 Yuba City^^^ Sutter and Yuba 166,892 0.066 ppm Yuba City-Almond Street 1 1 0
* Parts of these CBSAs are included in the geographical scope of this report, and parts are within the geographical scope of the reports being completed by the districts. See Table 5a for the completed list of CBSAs in California. The numbers of active ozone monitors listed are for the entire CBS A (see below for site details). Only ozone monitors that are part of the SLAMS network are counted towards this monitoring requirement. ^ The 3-year average of the 4th highest concentration usually represents the design value. However, prior to 2011, the highest concentrations in the Bakersfield CBSA were measured at Arvin-Bear Mountain, which has a 2010 design value of 0.104 ppm. A replacement site for the Arvin-Bear Mountian site has not yet been deployed, so the 3-year average of the 4th highest concentration at Edison of 0.093 ppm does not represent the design value for the Bakersfield CBSA. ^^ The Fairfield site is a seasonal site (April -November). ^^^ The Sutter Buttes site in the Yuba City CBSA was not counted towards this requirement because it is a Special Purpose Monit or (SPM) site.

Ozone sites for which are counted towards minimum monitoring requirements. CBSA Site CBSA Site CBSA Site Arvin-DiGorgio Chico-East Auburn Bakersfield-California Paradise Colfax Bakersfield-Municipal Airport Davis Edison CBSA Site Elk Grove Maricopa Anderson Folsom Mojave Lassan Volcanic NP Lincoln Oildale Redding North Highlands Shafter Shasta Lake Placerville Roseville CBSA Site CBSA Site Sac-Del Paso Anahiem Banning-Airport Sac-Goldenland Azusa Barstow Sac-T St Burbank Blyth Sloughhouse Compton Crestline Woodland Costa Mesa Elsinore Glendora Fontana CBSA Site La Habra Hesperia Healdsburg Lancaster Indio Santa Rosa Long Beach Joshua Tree-Cottonwood Los Angeles-North Main Mira Loma CBSA Site Los Angeles-Westchester Palm Springs Vallejo Mission Viejo Perris Vacaville North Long Beach Phelan Fairfield Pasadena Redlands Pico Riveria Riverside-Rubidoux CBSA Site Pomona San Bernardino Reseda Trona Santa Clarita Upland West Los Angeles Victorv ille Westchester # of Additonal Monitors Needed CBSA County(ies) Population (2010 Census) 3-Year Avg of the 4th Highest Concentration Site with the Highest 3-Yr Avg of the 4th Highest Concentration # of Monitors Required # of Active Monitors

Riverside-San Bernardino-Ontario SacramentoArdenArcadeRoseville

Santa Rosa

VallejoFairfield

Yuba City Yuba City-Almond Bakersfield Chico

Los Angeles-Long BeachAnahiem Redding

### _______________________________________________________________________ 60 Annual Monito ring Network Report for Twenty-th ree Districts in California PM2.5 1 Minimum Montoring Requirements for PM2.5 SLAMS.

Bakersfield* Kern 839,361 15.6 Bakersfield-410 E Planz 58 Bakersfield-California Ave 2 4 0 Chico Butte 220,000 9.5** Chico-East** 34** Chico-East** 1 1 0 Los Angeles-Long Beach-Anahiem* Los Angeles and Orange 12,828,837 13.1 Los Angeles-North Main 32 Burbank & LA-North Main 3 12 0
Redding Shasta 177,223 5.3 Redding-Health Department 14 Redding-Health Department 0 1 0 Riverside-San Bernardino-Ontario* Riverside and San Bernardino 4,224,851 15.6 Mira Loma Van Buren 37 Mira Loma Van Buren 3 10 0

Sacramento-Arden Arcade-Roseville* El Dorado, Placer, Sacramento, and Yolo 2,149,127 9.5 Sacramento-DPM 31 Sacramento-DPM, Sacramento-T St, and Sacramento-Health Dept*** 36 0

Santa Rosa* Sonoma 483,878 8 Santa Rosa-5th St 22 Santa Rosa-5th St 0 1 0 Vallejo-Fairfield* Solano 413,344 8.8 Vallejo-304 Tuolumne St 26 Vallejo-304 Tuolumne St 0 1 0 Yuba City Sutter and Yuba 166,892 6.9 Yuba City-Almond 26 Yuba City-Almond 0 1 0

1 Design values are based on both FRM and FEM data. The total number of active PM2.5 monitors include both the filter-based FRMs and the continuous FEM PM2.5 monitors that are part of the SLAMS network. * Parts of these CBSAs are included in the geographical scope of this report, and parts are within the geographical scope of th e reports being completed by the districts. See Table 5a for the completed list of CBSAs in California. The numbers of active PM2.5 SLAMS monitors listed are for the enti re CBSA (see below for site details). **The Chico-East site started on 4/2/2012. All monitors at the Chico-East site was relocated from the discontinued Chico-Manza nita site. The 2012 design values for the Chico CBSA were computed by combining the PM2.5 data from the two Chico locations (i.e., Chico-Manzanita and Chico-East). ***These three sites have a 24-hour design value of 31 ug/m3 in 2012.

PM2.5 SLAMS sites for which are counted towards minimum monitoring requirements. CBSA Site CBSA Site CBSA Site Bakersfield-California Auburn Bakersfield-E Planz Roseville Mojave Sac-Del Paso Ridgecrest CBSA Site Sac-Health Sac-T St CBSA Site Woodland Anahiem Azusa CBSA Site CBSA Site Burbank Big Bear City Compton Fontana Lancaster Indio Los Angeles-North Main Mira Loma CBSA Site Mission Viejo Ontario North Long Beach Palm Springs Pasadena Riverside-Magnolia Pico Riveria Riverside-Rubiduox CBSA Site Reseda San Bernardino South Long Beach Victorville Bakersfield

Los Angeles-Long Beach-Anahiem Chico-East

Redding Redding-Health Dept Sacramento-Arden ArcadeRoseville Chico

Santa Rosa

Yuba City Riverside-SanBernardinoOntario # of Active SLAMS Sites # of Additional SLAMS Sites

Needed Site(s) with the Highest 3-

year Design Value # of Required SLAMS Sites

Yuba CityAlmond Santa Rosa

Vallejo Vallejo-Fairfield CBSA County(ies) Population (2010 Census) 3-year Highest Annual Design Value (ug/m3) Site with the Highest 3- year Annual Design Value 3-year Highest 24-hr Design Value (ug/m3)

### _______________________________________________________________________ 61 Annual Monito ring Network Report for Twenty-th ree Districts in California Continuous PM2.5 1 Minimum Montoring Requirements for continuous PM2.5 monitors.

Bakersfield* Kern 839,361 Bakersfield-California Bakersfield-California 1 3 0 Chico Butte 220,000 Chico-East Chico-East 1 3 0 Los Angeles-Long Beach-Anahiem* Los Angeles and Orange 12,828,837 Los Angeles-North Main Burbank & LA-North Main 2 7 0
Redding Shasta 177,223 N/A N/A 0 0 0 Riverside-San Bernardino-Ontario* Riverside and San Bernardino 4,224,851 Mira Loma Van Buren Mira Loma Van Buren 2 8 0

Sacramento-Arden Arcade-Roseville* El Dorado, Placer, Sacramento, and Yolo 2,149,127 Davis-UCD Campus Sacramento-DPM 2 9 0

Santa Rosa* Sonoma 483,878 Santa Rosa-5th St Santa Rosa-5th St 0 1 0 Vallejo-Fairfield* Solano 413,344 Vallejo Vallejo 0 1 0 Yuba City Sutter and Yuba 166,892 Yuba City-Almond Yuba City-Almond 0 1 0

1 The CFR does not specify that continuous PM2.5 monitors have to be Federal Equivalent Methods (FEMs); therefore, this assessmen t includes both continuous FEM and non-FEM PM2.5 monitors. * Parts of these CBSAs are incl uded in the geographical scope of this report, and parts are wi thin the geographical scope of the reports being completed by th e districts. See Table 5a for the completed list of CBSAs in California. The numbers of active contin uous PM2.5 monitors listed are for the entire CBSA (see below for site details). ^ The required number of continuous PM2.5 monitor is one-half (r ound up) the total number of required PM2.5 SLAMS sites in each CBSA (40 CFR 58 Appendix A Section 4.7.2). ^^The number of active continuous PM2.5 monitors listed for each CBSA include both FEM and non-FEM monitors. N/A means that there is no continuous PM2.5 monitor in the CBSA.

Continuous PM2.5 sites for which are counted towards minimum monitoring requirements. CBSA Site CBSA Site CBSA Site Bakersfield Redding -- Auburn Lebec Colfax Mojave CBSA Site Elk Grove Banning-Airport Folsom CBSA Site Crestline Lincoln Anahiem Elsinor Roseville Burbank Mira Loma Sac-Del Paso Glendora Riverside-Magnolia Sac-T St Los Angeles Riverside-Rubidoux UC Davis North Long Beach Upland Reseda Winchester Santa Clarita CBSA Site

CBSA Site CBSA Site Chico-East Gridley CBSA Site Paradise Santa Rosa

Vallejo-Fairfield Vallejo Yuba City Yuba City-Almond Los Angeles-Long Beach-Anahiem

Chico Bakersfield

Riverside-San Bernardino-Ontario SacramentoArden ArcadeRoseville

# of Active Continuous Monitors^^

Santa Rosa # of Additional Continuous Monitors Needed CBSA County(ies) Population (2010 Census) Site with the Highest Annual Design Value Site with the Highest 24- hr Design Value # of Required Continuous Monitors^

### _______________________________________________________________________ 62 Annual Monito ring Network Report for Twenty-th ree Districts in California PM10 1 Minimum Montoring Requirements for PM10.

Bakersfield* Kern 839,361 99.6 Bakersfield-California 1-2 4 0 Chico Butte 220,000 55.6 Chico-East** 0 1 0Los Angeles-Long BeachAnahiem* Los Angeles and Orange 12,828,837 80 Los Angeles-North Main 2-4 11 0 Redding Shasta 177,223 50 Anderson 0 3 0Riverside-San BernardinoOntario* Riverside and San Bernardino 4,224,851 270.6 Indio 6-10 20 0
Sacramento-Arden ArcadeRoseville* El Dorado, Placer, Sacramento, and Yolo 2,149,127 76.5 Sacramento-Goldenland 2-4 12 0

Santa Rosa* Sonoma 483,878 35 Healdsburg 0-1 3 0 Vallejo-Fairfield* Solano 413,344 26 Vacaville 0-1 1 0 Yuba City Sutter and Yuba 166,892 60.8 Yuba City-Almond 0 1 0

1 For the purpose of this monitoring requirement, only PM10 FRM monitors with size selective inlets (SSI) are counted. * Parts of these CBSAs are included in the geographical scope of this report, and parts are within the geographical scope of th e reports being completed by the districts. See Table 5a for the completed list of CBSAs in California. The numbers of active PM10 monitors listed are for the entire CBSA (see below for site details). **The Chico-East site was recently established on 4/2/2012.

PM10 FRM sites for which are counted towards minimum monitoring requirements. CBSA Site CBSA Site CBSA Site Bakersfield-California Banning-Airport Auburn Canebrake Barstow Colfax Oildale Crestline Lincoln Ridgecrest Elsinore North Highlands Fontana Roseville CBSA Site Hesperia Sac-Branch Anahiem Indio Sac-Del Paso Azusa Lucerne Valley Sac-Goldenland Burbank Mira Loma Sac-Health Dept Glendora Norco Sac-T St Lancaster Ontario West Sac Los Angeles-North Main Palm Springs Woodland Los Angeles-Westchester Perris Mission Viejo Redlands CBSA Site North Long Beach Riverside-Magnolia Santa Clarita Riverside-Rubidoux South Long Beach San Bernardino Trona CBSA Site CBSA Site Upland Victorville

CBSA Site CBSA Site Redding-Health Dept Healdsburg Anderson Cloverdale Shasta Lake Gunerneville VallejoFairfield Vacaville

Yuba City Yuba CityAlmondLos Angeles-Long BeachAnahiem

Redding Riverside-San Bernardino-Ontario

Santa Rosa Bakersfield

Chico Chico-East SacramentoArdenArcadeRoseville # of Required Monitors # of Active Monitors # of Additional Monitors Needed CBSA County(ies) Population (2010 Census) 2012 Max Daily Concentration

(ug/m3) Max Concentration Site

### _______________________________________________________________________ 63 Annual Monito ring Network Report for Twenty-th ree Districts in California 

## APPENDIX C

Supporting Documents included in the ANP (For example, EPA approval letters)

1. March 7, 2013. U.S. EPA letter, approving the relocation of the Fresno NCore site.
2. April 10, 2013. ARB letter, reques ting for approval of the Chico site relocation.
3. April 24, 2013. U.S. EPA letter, approving the termination of the ozone monitor at the Calexico-East site.
4. June 5, 2013. ARB letter, requesti ng for approval of the seasonal ozone monitoring sites covered in this report.
5. July 17, 2013. U.S. EPA letter, approving the seasonal ozone monitoring sites covered in this report.

### _______________________________________________________________________ 76 Annual Monito ring Network Report for Twenty-th ree Districts in California 

## APPENDIX D

List of Abbreviations and Acronyms

APCD Air Pollution Control District AQMD Air Quality Management District AQS Air Quality System ARB Air Resources Board

CFR Code of Federal Regulations CBSA Core-Based Statistical Area

FEM Federal equivalent method FRM Federal reference method

MSA Metropolitan Statistical Area

NAAQS National Ambient Air Quality Standard NO 2 

### Nitrogen dioxide

Pb Lead PM 10 

### Particulate matter (0 to 10 microns aerodynamic diameter) PM 2.5 

### Particulate matter (0 to 2.5 microns aerodynamic diameter) PQAO Primary quality assu rance organization

SIP State Implementation Plan SLAMS State and Local Air Monitoring Stations SO 2 

### Sulfur dioxide

U.S. EPA United States Environmental Protection Agency