2022 Air Monitoring Network Plan Final ACKNOWLEDGEMENTS In 2021, the Maricopa County Air Quality Department’s Air Monitoring Division operated and maintained 23 ambient air monitoring sites throughout Maricopa County. Air Monitoring Division team members include: one manager, one quality assurance officer, three supervisors, two air quality data coordinators, one management analyst, and thirteen technicians. Maricopa County Air Quality Department would especially like to thank its personnel for their excellent job in helping to maintain Maricopa County’s air monitoring program. The Maricopa County Air Quality Department gratefully acknowledges the assistance of other agencies which may provide data and comments to this review, including the Arizona Department of Environmental Quality, Pinal County Air Quality Control District, and the Tribal air monitoring organizations adjacent to Maricopa County. Last, MCAQD would like to thank the United States Environmental Protection Agency’s Region 9 personnel for their guidance and support regarding our air monitoring program. Cover photos: From the left: Eastwood site Durango Complex site 2022 Air Monitoring Network Plan June 2022 Page 2 of 168 Table of Contents ................................................................................................................................................... 1 ACKNOWLEDGEMENTS ......................................................................................................2 ABSTRACT ...............................................................................................................................6 Network Modifications and Site Updates ............................................................................................... 7 Summary of Past Network Modifications and Site Updates ............................................................... 7 Proposed Network Modifications and Site Updates ............................................................................. 8 INTRODUCTION ...................................................................................................................9 Clean Air Act and Criteria Pollutants ....................................................................................................13 The National Ambient Air Quality Standards......................................................................................13 Forecasting and Reporting Air Quality Conditions.............................................................................15 Information Regarding Compliance of Criteria Pollutants ................................................................19 AIR MONITORING STRATEGIES AND SURVEILLANCE SYSTEM DESIGN ............ 20 Overview of Air Monitoring Requirements and System Design ......................................................20 Overview of the Air Monitoring Sites ...................................................................................................24 SUMMARY OF NETWORK RESULTS AND REQUIRED INFORMATION ................. 25 Determining Data Quality and Acceptability .......................................................................................25 Summary of 2021 Criteria Pollutant Data ............................................................................................26 Summary of 2021 Criteria Pollutant NAAQS Status ..........................................................................43 2021 O3 Exceedance, Violation, and Exceptional Event Information ............................................44 2021 PM10 Exceedance, Violation, and Exceptional Event Information ........................................48 2021 PM2.5 Exceedance, Violation, and Exceptional Event Information ........................................52 Information Regarding Maricopa County’s Supplementary Air Monitoring Programs ................53 Shared Air Monitoring Responsibilities ................................................................................................54 Information Regarding Additional Air Monitoring within Maricopa County ................................54 REFERENCES ....................................................................................................................... 55 APPENDIX I - AIR MONITORING DATA BY SITE ......................................................... 57 APPENDIX II - EPA-REQUIRED SITE METADATA ....................................................... 81 APPENDIX III - 2021 DATA CERTIFICATION DOCUMENTATION ......................... 133 APPENDIX IV - EPA CORRESPONDENCE.................................................................... 154 APPENDIX V - ARIZONA INTERAGENCY CORRESPONDENCE ............................ 155 APPENDIX VI - PUBLIC NOTICE AND COMMENT INFORMATION ..................... 156 APPENDIX VII - GLOSSARY ............................................................................................. 160 2022 Air Monitoring Network Plan June 2022 Page 3 of 168 List of Tables Table 1. National Ambient Air Quality Standards ......................................................................................14 Table 2. Basic SLAMS Air Monitoring Objectives .....................................................................................21 Table 3. Monitor Types* .................................................................................................................................22 Table 4. Site Types ...........................................................................................................................................23 Table 5. Spatial Scales of Representativeness ..............................................................................................23 Table 6. MCAQD Air Monitoring Sites ......................................................................................................24 Table 7. 2021 Criteria Pollutant Data Completeness for SLAMS ............................................................25 Table 8. 2021 8-hour CO Average Data Summary .....................................................................................27 Table 9. 2021 CO Monitor Requirements....................................................................................................27 Table 10. 2021 NO2 1-hour Data Summary ................................................................................................29 Table 11. 2021 NO2 Monitor Requirements................................................................................................29 Table 12. 2021 O3 Eight-hour Average Summary ......................................................................................31 Table 13. 2021 O3 Monitor Requirements ...................................................................................................32 Table 14. 2021 PM10 24-Hour Data Summary Including EE Data ..........................................................34 Table 15. 2021 PM10 Monitor Requirements ...............................................................................................35 Table 16. 2021 PM2.5 24-Hour and Annual Averages .................................................................................37 Table 17. PM2.5 3-Year Annual Averages .....................................................................................................38 Table 18. PM2.5 3-Year 24-Hour Averages of the 98th Percentile .............................................................39 Table 19. 2021 PM2.5 Data Required by EPA ..............................................................................................40 Table 20. 2021 SO2 Data Summary ...............................................................................................................42 Table 21. 2021 SO2 Monitor Requirements .................................................................................................42 Table 22. 2021 NAAQS Exceedances and Violation Summary ...............................................................43 Table 23. 2021 PM10 Exceptional Event Information................................................................................49 Table 24. 2021 Violations of the PM10 24-Hour NAAQS Including EE Data ......................................50 Table 25. 2021 Violations of the PM10 NAAQS Excluding Data Flagged as an EE.............................51 Table 26. 2021 Open Forum Meeting Attendees..................................................................................... 159 2022 Air Monitoring Network Plan June 2022 Page 4 of 168 List of Figures Figure 1. 2021 Maricopa County Air Monitoring Sites ..............................................................................11 Figure 2. MCAQD Air Monitoring Instruments by Site ...........................................................................12 Figure 3. MCAQD Clean Air Make More Website ....................................................................................15 Figure 4. The Air Quality Index ....................................................................................................................16 Figure 5. EPA AirNow Website ....................................................................................................................17 Figure 6. MCAQD Air Quality Status Map .................................................................................................18 Figure 7. 2021 CO Monitoring Sites .............................................................................................................26 Figure 8. 2021 NO2 Monitoring Sites ...........................................................................................................28 Figure 9. 2021 O3 Monitoring Sites ...............................................................................................................30 Figure 10. 2021 PM10 Monitoring Sites.........................................................................................................33 Figure 11. 2021 PM2.5 Monitoring Sites ........................................................................................................36 Figure 12. 2021 SO2 Monitoring Sites ..........................................................................................................41 Figure 13. 2021 O3 Exceedance Days ...........................................................................................................45 Figure 14. 2021 O3 NAAQS Violations by Site including Exceptional Event .......................................46 Figure 15. 2021 O3 NAAQS Violations by Site excluding Exceptional Events .....................................47 Figure 16. 2021 PM10 Exceedance Days .......................................................................................................48 Figure 17. 2021 PM2.5 Exceedance Days ......................................................................................................52 2022 Air Monitoring Network Plan June 2022 Page 5 of 168 ABSTRACT In 2021, the Maricopa County Air Quality Department (MCAQD) Air Monitoring Division successfully operated a robust air quality surveillance system that monitored for regulated ambient air pollutants as per 40 CFR Parts 50 and 58. The air monitoring data produced are intended for regulatory compliance determinations of criteria air pollutants. Unless otherwise noted, each monitor meets the requirements of 40 CFR Part 58 – Subpart G - Appendices A, B, C, D, and E, where applicable. The MCAQD strives to provide the most reliable and relevant air monitoring data to the public. Air quality issues are diverse and are of great interest to the citizens of Maricopa County. High-quality data are a cornerstone of developing and implementing effective SIPs, EE packages, and operating permits for new and existing sources, for the protection of human health and the environment. This 2022 Air Monitoring Network Plan (AMNP) provides information regarding the air monitoring surveillance system operating within Maricopa County, covers changes made to the air monitoring network in 2021, and discusses network changes planned for 2022. Please refer to Appendix VII for the glossary of terms and acronyms. 2022 Air Monitoring Network Plan June 2022 Page 6 of 168 Network Modifications and Site Updates This section summarizes network modifications and site updates made in 2021, and changes planned for 2022. In 2021, one new site became operational. There were no site closures in 2021 or planned for 2022. Summary of Past Network Modifications and Site Updates Monitor/ Type Date Site February 2021 Thirty-Third (04-013-4020) CO, PM2.5 New Site: Eastwood (04-013-4021) CO, NO2, PM2.5, Ambient Temperature, Barometric Pressure, Relative Humidity, Wind Speed, Wind Direction March 2021 March 2021 Falcon Field (04-013-1010) June 2021 South Phoenix (04-013-4003) Durango Complex (04-013-9812), South Phoenix (04-013-4003), West Phoenix (04-013-0019) December 2021 Wind Speed Wind Direction Solar Radiation Black Carbon December 2021 Glendale (04-013-2001) Site Updates 2021 Various Data Loggers 2022 Air Monitoring Network Plan June 2022 Description Relocated monitoring of CO and PM2.5 from this site to the new Eastwood site. Eastwood is MCAQD’s new near-road monitoring site which replaced the Diablo (04-013-4019) near-road monitoring site. Since the Diablo site permanently closed in 2020, temporary CO and PM2.5 monitoring occurred at the Thirty-Third site until the Eastwood site was completed and operational. Due to safety concerns, securing the wind tower to the roof was no longer possible and caused MCAQD to discontinue monitoring for wind speed and direction at this site. MCAQD is currently searching for a new location where a shelter can be established. Wind measurements will resume when the new shelter is established. Began monitoring solar radiation for enhanced support to modeling activities. Deployed MetOne Black Carbon BC1060 Monitors at three sites to measure the effects of wildfire smoke on air quality. Modified the deck due to safety concerns, replaced the flooring in the shelter due to damage, and repainted the shelter. Replaced outdated ESC-8832 data loggers with the AgiliareLLC/ESC-8864 data loggers. Page 7 of 168 Proposed Network Modifications and Site Updates For 2022, MCAQD does not anticipate any significant interruptions to monitoring operations. MCAQD plans on continuously updating existing sites and improving site safety and security. Improvements to power supplies or communication systems will occur as needed. The following table lists projects planned for 2022. Planned Date Site Monitor/ Type Description Ozone Wind Speed Wind Direction MCAQD is currently searching for a new site location. This change will improve access and sample line configuration and allow for a wind tower to be secured. Due to safety concerns at the current site location, MCAQD discontinued monitoring for wind speed and wind direction in March of 2021. These measurements will resume once the new shelter is established. Ozone MCAQD will be relocating analyzer and meteorological parameters to a shelter less than 100 feet from current location. Relocation provides better access and data reliability for monitoring at the site. 2022 Falcon Field (04-013-1010) 2022 Cave Creek (04-013-4008) 2022 TBD Data Loggers MCAQD plans to continue replacing outdated ESC8832 data loggers with AgiliareLLC/ESC-8864 data loggers. 2022 Buckeye (04-013-4011) Ozone, CO, PM10 Maricopa County will be selling the current site location; thus, the site will need to be relocated to a new Maricopa County compound approximately 100 yards to the East of the current location. 2022 Air Monitoring Network Plan June 2022 Page 8 of 168 INTRODUCTION Each year, MCAQD produces a comprehensive AMNP, or Plan, that provides vital information regarding the air monitoring surveillance system operating within Maricopa County. The Plan addresses the United States Environmental Protection Agency’s (U.S. EPA) requirements for operating the surveillance system as per 40 CFR Part 58 - Ambient Air Quality Surveillance. As per 40 CFR Part 58, Subpart B §58.10(a)(1), the EPA requires each air monitoring organization (MO) operating within the U.S. and its territories to develop and submit this Plan annually by July 1st, following a 30day public comment period. Each year MCAQD solicits comments from the public during the public comment period and holds an open forum public meeting. As needed, MCAQD amends the final draft based on any comments received. The final AMNP is submitted to EPA Region 9 for review and approval. The EPA Region 9 Administrator, or their representative, must approve any requests for network changes and waivers. EPA Region 9 completes the review process within 120 days. MCAQD will post the final AMNP on the MCAQD Air Monitoring website. In addition to the annual data certification process, the AMNP helps MCAQD continuously review, assess, and improve how well the air monitoring surveillance system, or network, is performing. Data certification for 2021 was submitted on April 25, 2022. The design and performance of the ambient air monitoring network and data certification process are covered by the regulatory requirements found in: • 40 CFR Part 58 – Ambient Air Quality Surveillance: Subpart A (General Provisions), Subpart B (Monitoring Network), Subpart C (Special Purpose Monitors (SPM)), Subpart D (Comparability of Ambient Data to the NAAQS), Subpart F (Air Quality Index (AQI) Reporting), and Subpart G (Federal Monitoring). The AMNP also addresses the following regulatory requirements: • 40 CFR Part 58 Appendix A - Quality Assurance Requirements for Monitors used in Evaluations of National Ambient Air Quality Standards • 40 CFR Part 58 Appendix C - Ambient Air Quality Monitoring Methodology • 40 CFR Part 58 Appendix D - Network Design Criteria for Ambient Air Quality Monitoring • 40 CFR Part 58 Appendix E - Probe and Monitoring Path Siting Criteria for Ambient Air Quality Monitoring • 40 CFR Part 58, Appendix G – Uniform Air Quality Index (AQI) and Daily Reporting 2022 Air Monitoring Network Plan June 2022 Page 9 of 168 The following information is covered in this AMNP: • • • • • • • • • • • • • • • Purpose and type of monitoring conducted at each site; Detailed descriptions and metadata for each site; Metadata for each pollutant monitor; Three years of Criteria Pollutant (CP) data from each monitor; Design value metrics that identify the monitoring site with the highest O3, and PM2.5 concentrations measured over the past 3 years; The minimum quantity of monitors required for each CP network; Summaries of pollutant data by network and required statistical analyses; The quality and suitability of pollutant data for comparison to the NAAQS; The compliance status of monitors, including exceedance days and violations; Proposed changes to the pollutant networks, sites, monitoring and analytical laboratory methods planned for 2022; Brief information regarding special purpose and/or research-driven air monitors, if operated; The reporting of real-time pollutant and meteorological data to the public via the MCAQD web map and AIRNow; Any requests for waivers from specific air monitoring requirements, if applicable; Interagency correspondence regarding the air monitoring program; and Public comments received MCAQD’s responses regarding the final draft AMNP. 2022 Air Monitoring Network Plan June 2022 Page 10 of 168 Figure 1 and 2 show the MCAQD’s air monitoring sites and monitoring instrumentation. Figure 1. 2021 Maricopa County Air Monitoring Sites 2022 Air Monitoring Network Plan June 2022 Page 11 of 168 Figure 2. MCAQD Air Monitoring Instruments by Site Clean Air Act and Criteria Pollutants The Clean Air Act (CAA), and its amendments, provide the framework for pertinent State/Local/Tribal (S/L/T) agencies to assess and protect air quality through an air monitoring program. Unless generated for research, special studies, or unless otherwise noted, each monitor meets the requirements of 40 CFR Part 58 – Subpart G - Appendices A, B, C, D, and E, where applicable. This means that the data MCAQD produces are of acceptable quality for NAAQS comparisons and compliance determinations, which is the primary purpose for generating the data. Please note that Appendix B applies to PSD monitoring only and that no PSD monitoring was conducted within Maricopa County. MCAQD monitors for five CPs, which are: 1. Carbon monoxide (CO) 2. Nitrogen oxides (NOx) with nitrogen dioxide (NO2) used as the indicator compound 3. Ozone (O3) 4. Particulate matter ≤10 micrometers (PM10) and ≤2.5 micrometers (PM2.5) 5. Sulfur dioxide (SO2) The National Ambient Air Quality Standards The U.S. EPA regulates CPs according to the NAAQS, which establish ambient levels for each CP using health and welfare-based criteria. There are two sets of NAAQS standards. As per CAA §109(b), the primary NAAQS are designed to provide an adequate margin of safety that is requisite to protecting public health. The secondary NAAQS are designed to protect public welfare from any known or anticipated adverse effects associated with the presence of a CP in the ambient air such as damage to properties such as farm crops and buildings, visibility impairment in national parks and wilderness areas, and for the protection of ecosystems. NAAQS are geared toward improving air quality in geographical areas where the current quality is unacceptable as well as preventing air quality deterioration in geographical areas where the air is relatively free of pollution. Since each CP has different health effects and environmental damage potential, NAAQS level(s) are different for each pollutant. Some pollutants have standards for both long-term and short-term averaging times. The short-term standards are designed to protect against acute health effects, while the long-term standards are designed to protect against chronic health effects. The NAAQS are not static. The CAA requires that they undergo periodic review using the most recent medical, epidemiological, physiological, and ecosystem research available. Historically, when a NAAQS level changes; the new level(s) is lower. The NAAQS review is a lengthy process that assesses the science upon which each NAAQS is based as well as the standard itself. The Clean Air Scientific Advisory Committee (CASAC) provides independent advice to the U.S. EPA concerning the need to change a standard. In addition, comments are solicited from the public. More information regarding the NAAQS review process is available at EPA’s website. U.S. EPA’s Regional Offices oversee the enforcement of the CAA, and MCAQD falls under the jurisdiction of EPA Region9. U.S. EPA OAQPS oversees the air monitoring program at a national level, leads regulatory and/or policy changes affecting air monitoring operations and quality requirements, and engages in the review of the NAAQS. Table 1 shows a summary of the primary and secondary NAAQS levels for each CP. Table 1. National Ambient Air Quality Standards Standard Averaging Pollutant Level Type Time 8 hours 9 ppm Carbon Monoxide primary (CO) 1 hour 35 ppm Lead (Pb) Nitrogen Dioxide (NO2) Ozone (O3) * Particle Matter (PM) PM2.5 PM10 Sulfur Dioxide (SO2) Form Not to be exceeded more than once per year primary and Rolling 30.15 μg/m3 Not to be exceeded secondary month average primary 1 hour 98th percentile of 1-hour daily 100 ppb maximum concentrations, averaged over 3 years primary and secondary 1 year 53 ppb primary and secondary (2015) Annual Mean 8 hours Annual fourth-highest daily 0.070 ppm maximum 8-hour concentration, averaged over 3 years primary and secondary (2008) 8 hours Annual fourth-highest daily 0.075 ppm maximum 8-hour concentration, averaged over 3 years primary 1 year 12.0 μg/m3 secondary 1 year 15.0 μg/m3 primary and secondary 24 hours primary and secondary 24 hours primary 1 hour Annual mean, averaged over 3 years Annual mean, averaged over 3 years 98th percentile, averaged over 3 35 μg/m3 years Not to be exceeded more than 150 μg/m3 once per year on average over 3 years 99th percentile of 1-hour daily 75 ppb maximum concentrations, averaged over 3 years Not to be exceeded more than once per year *Maricopa County is designated as Moderate for 2008 and Marginal for 2015. Source: https://www.epa.gov/criteria-air-pollutants/naaqs-table https://www3.epa.gov/airquality/greenbook/anayo_az.html secondary 2022 Air Monitoring Network Plan 3 hours June 2022 0.5 ppm Page 14 of 168 Forecasting and Reporting Air Quality Conditions This section provides information regarding the use and reporting of continuous, real-time data at the County and national level. It also provides historical information on how the reporting of air quality conditions has improved over the years. Air Quality Forecasting Forecasting air quality depends upon having air quality data available that can be put into a model which generates information needed for meteorologists to make forecasts. Monitoring instrumentation measures and reports hourly data to monitoring organizations (MO) for distribution to AirNow. The readily available data are invaluable to air quality forecasters because they can better predict what the AQI(s) will be. ADEQ and MCAQD developed a year-round air quality forecasting and “restriction” reporting process for the Phoenix metropolitan area. In Maricopa County, ADEQ is lead for air quality forecasting and issuing a “High Pollution Advisory” (HPA) or a “Health Watch” (HW), while MCAQD designates a “No Burn Day”. MCAQD’s CLEAN AIR MAKE MORE website provides a description of each of these restrictions and provides helpful information on improving air quality. Figure 3 shows an overview of the content available. Figure 3. MCAQD Clean Air Make More Website 2022 Air Monitoring Network Plan June 2022 Page 15 of 168 The EPA Air Quality Index and NowCast Since the 1950s, as per 40 CFR Part 58, Appendix G, the Uniform Air Quality Index (AQI) and Daily Reporting, the EPA has required that MOs report air quality conditions to the public regarding CP health risks based upon data from their network. To do so, EPA developed the AQI, which is a health risk communication tool that converts CP concentrations into six health-impact related color-coded indices based upon the NAAQS. Members of the public used the AQI forecast to reduce their exposure to air pollution and its associated health effects by modifying their daily activities. The AQI graduated color scheme is shown in Figure 4. Figure 4. The Air Quality Index Source: 40 CFR Part 58, Appendix G – Uniform Air Quality Index and Daily Reporting Air Quality Index (AQI) Basics In the early 2000s, AirNow began using “NowCast” values that tried to reflect current conditions. However, values were based upon each pollutant’s NAAQS averaging time, and it was recognized that these formulas do not respond well to real-time, rapidly changing air quality conditions. For instance, in the desert areas of the Southwest during the Monsoon Season, dust storms often emerge and dissipate within several hours. These events can drive PM10, and sometimes PM2.5, concentrations into the unhealthy range. Since the NAAQS averaging time for PM10 is 24 hours, a dust storm the evening before can cause air quality conditions to show in the orange range or higher the following day even though the sky is clear and no impact for the prior day’s event is affecting present conditions. Smoke from a brief fire can adversely affect air quality for PM2.5 likewise. 2022 Air Monitoring Network Plan June 2022 Page 16 of 168 The abundance of continuous data in the last decade has furthered our understanding of pollutants, especially PM2.5. This information helped improve the NowCast formulas so values better reflect rapidly changing conditions. To develop the new formulas, EPA analyzed millions of data points gathered from all parts of the U.S. Since PM10, PM2.5, and O3 make up most air pollution concerns throughout the U.S., the updated NowCast reports on health risks related to these pollutants, only. The formulas use a shorter averaging time when a pollutant’s concentration is high and a longer averaging time when a pollutant’s concentration is low, and conditions are stable. To read more about how the most recent NowCast formulas were developed visit the AirNow FAQ section. AirNow Web Maps The EPA’s AirNow website communicates the status of air quality conditions throughout the country. The MCAQD has participated in the AirNow program since 2001. The MCAQD distributes 1-hour continuous CP and select meteorological data to the AirNow website. The AirNow maps cover a geographical area as far east as Queen Creek, as far south as Casa Grande, and as far west as the town of Palo Verde. Air quality data from other Local, Tribal, and National Park Service air monitoring operations within Arizona populate the map as well. Figure 5. EPA AirNow Website 2022 Air Monitoring Network Plan June 2022 Page 17 of 168 The Maricopa County Interactive Air Quality Map The MCAQD provides real-time data on our website using an interactive air quality map with three layers of information. Figure 6 shows the default Current Conditions map, which uses the latest NowCast formula to provide a site’s Maximum NowCast value for either PM10, PM2.5 or O3, as well as the latest formulas for each of the three pollutants’ NowCast values. The second tab shows the AQI developed by an unofficial, rolling formula. The third tab shows the Raw Data map, which provides hourly CO, NO2, O3, PM2.5, SO2, and 5-minute concentrations for PM10 and meteorological data from each site. Figure 6. MCAQD Air Quality Status Map Information Regarding Compliance of Criteria Pollutants Unless otherwise noted, the information regarding air pollutants in this section was compiled from various pages at the U.S. EPA’s Air and Radiation website. Carbon Monoxide (CO) In 2021, there were no exceedance days or violations of the CO NAAQS at any MCAQD site. Nitrogen Oxides (NOX) with Nitrogen Dioxide (NO2) as the Indicator Compound In 2021, there were no exceedances of the 1-hour or annual NO2 NAAQS. Ozone (O3) In 2021, there were fifty (50) days when at least one O3 monitor exceeded the 2015 8-hour NAAQS, and sixteen (16) sites violated the standard. For the 2008 8-hour NAAQS, there were twenty-eight (28) days and sixteen (16) sites that violated the standard. For more information regarding the O3 exceedance days and NAAQS violations, refer to the Summary of 2021 Criteria Pollutant NAAQS Status section of this document. Particulate Matter (PM) In 2021, there were eight days when at least one PM10 monitor exceeded the 2012 24-hour PM10 NAAQS level. For PM2.5, there were three days when at least one monitor exceeded the 2012 24-hour NAAQS level, but no monitors violated the NAAQS. For more information regarding the PM exceedance days and NAAQS violations, refer to the Summary of 2021 Criteria Pollutant NAAQS Status section of this document. Sulfur Dioxide (SO2) In 2021, there were no exceedances or violations of the primary or secondary SO2 NAAQS. Lead (Pb) As of December 2019, MCAQD no longer monitors for Pb. Ambient air monitoring for Pb occurs at the Arizona Department of Environmental Quality JLG Supersite’s NCore monitoring station (04013-9997). 2022 Air Monitoring Network Plan June 2022 Page 19 of 168 AIR MONITORING STRATEGIES AND SURVEILLANCE SYSTEM DESIGN Overview of Air Monitoring Requirements and System Design The MCAQD operated and maintained 23 ambient air monitoring sites throughout Maricopa County. The sites’ start-up dates range from 1961 for Central Phoenix to 2021 for the new Eastwood site. Land use patterns around the sites vary from densely populated urban areas to sparsely populated rural settings. The sites’ elevations range from 845 feet above sea level at Buckeye to 5190 feet above sea level at the top of Humboldt Mountain. The MCAQD chose each site and its pollutant monitors based on specific EPA requirements, special requests from EPA, and/or specific needs of the County. The 40 CFR Parts 50 and 58 provide the requirements for operating an ambient air monitoring program. The MCAQD holds the Primary Quality Assurance Organization (PQAO) designation for the County’s ambient air monitoring network and is fully responsible for designing and operating the total air monitoring surveillance system and managing the pollutant data generated. The MCAQD operates air monitors at EPA-approved State and Local Air Monitoring Stations (SLAMS), which includes the near-road stations. On occasion, special air monitoring initiatives involve temporarily operating CP monitors designated as Special Purpose Monitors (SPM), as well as special studies. This section details how each CP network is designed to obtain “representative” data. The 40 CFR Part 58 Appendix D covers the requirements for designing the air monitoring network. To determine compliance with the NAAQS, EPA-approved air monitors must collect the CP data. The EPA classifies approved monitor methods into one of three categories: a federal reference method (FRM), a federal equivalent method (FEM), or an approved regional method (ARM). The MCAQD uses FRM and FEM instruments. This practice ensures high-quality data of like kind are used for compliance-driven decisions. However, data from research monitors, e.g., noncompliance-related monitors, can be used to develop state and/or federal attainment and maintenance plans, further evaluate regional air quality models used in developing emissions control strategies, tracking trends in air pollution, and evaluating the impact control measures are having on improving air quality. Any short-term research data collected by the MCAQD can be made available to decision makers; but the data are not reported to AQS. Within Maricopa County, the ADEQ collects compliance data as well as research data at the JLG Supersite via the following EPA monitoring networks: National Core multi-pollutant site (NCore), Photochemical Ambient Monitoring Stations (PAMS), Chemical Speciation Network (CSN), and National Air Toxics Trends Stations (NATTS). The ADEQ also collects air toxics samples for the Urban Air Toxics Monitoring Program (UATMP) at MCAQD’s South Phoenix site. The data from these networks are reported to EPA and should be available in AQS and/or another EPA database. In addition to producing an annual network plan, the EPA requires a five-year network assessment as per 40 CFR Part 58.10. The 5-year assessment is best served by collaborating with EPA, ADEQ, and other local and/or tribal Monitoring Organizations. MCAQD last completed the assessment in 2020. The assessment process continues to improve, and MCAQD works with other MOs regarding CP network design issues as needed. The MOs within Arizona may provide support to each other by exchanging technical services and/or knowledge when problems arise with instrumentation or when conducting special studies. 2022 Air Monitoring Network Plan June 2022 Page 20 of 168 Basic Air Monitoring Objectives Each ambient air monitor must have a designated basic monitoring objective. The objectives in Table 2 apply to establishing required SLAMS monitoring stations and choosing the general locations for additional monitoring sites. The objectives are not listed based on importance or priority; however, each objective is important and must be considered individually. Table 2. Basic SLAMS Air Monitoring Objectives Objective Description Provide air pollution data to the general public in a timely manner Data can be presented to the public in a number of ways including air quality maps, newspapers, MOs, and EPA websites, and as part of weather forecasts and public advisories. Support compliance with ambient air quality standards and emissions strategy development Data from EPA-approved monitors for NAAQS pollutants will be used for comparing an area’s air pollution levels. Support for air pollution research studies Supplemental data useful with health effect assessments, atmospheric processes, or monitoring methods development work. Source: 40 CFR Part 58 Appendix D, 1.1(a – c) 2022 Air Monitoring Network Plan June 2022 Page 21 of 168 Monitor Types Pollutant monitor type must be designated as shown in Table 3 and are based upon how the data will be used and how long the monitor will remain in operation. The MCAQD’s air monitoring network is comprised of SLAMS, which gather data for comparison to the NAAQS. The MCAQD may operate SPMs temporarily; however, no SPMs were operated in 2021. Table 3. Monitor Types* Name Description SLAMS (State and Local EPA-approved, compliance monitor typically operated on a long-term basis. Air Monitoring Measure criteria pollutants for comparison to the NAAQS. Stations) A monitor typically operated on a short-term basis and not necessarily EPAapproved. These monitors are useful for gathering and reporting preliminary information regarding air quality in a local area quickly and over a short-term SPM (Special Purpose period, which is less than two years. In the event of a geographical area’s population increasing or data indicating that a SLAMS is more appropriate; an Monitors) SPM may be reclassified to SLAMS and potentially outfitted with a different method. 40 CFR Part 58.20 Subpart C A monitor typically operated for less than two years prior to a source opening in a protected Class A area and usually required by the permitting authority. PSDs are PSD operated for the purpose of establishing the effect on air quality of the emissions (Prevention of from a proposed source for purposes of preventing significant deterioration to a Significant “protected” area, e.g., a Class 1 area. Class 1 areas include national parks and Deterioration) wilderness areas where a major effort is underway to improve visibility and air quality. * Reference 40 CFR Part 58 2022 Air Monitoring Network Plan June 2022 Page 22 of 168 Site Types To support the three basic monitoring objectives, each site must be identified as one of the six “site types” shown below and may vary within each pollutant’s network. The site type is key to informing air quality professionals and the public about a pollutant’s peak concentration levels. Table 4 shows the site types as defined by EPA. Table 4. Site Types Sites for determining the highest concentrations expected to occur in the area covered by the network. Sites for measuring typical concentrations in areas of high population density (population exposure) . Sites for determining the impact of significant sources or source categories on air quality. Sites for determining general background concentration levels. Sites for determining the extent of regional pollutant transport among populated areas and in support of secondary standards. Sites for measuring air pollution impacts to visibility, vegetation damage, or other welfarebased impacts . Source: Adapted from 40 CFR Part 58, Appendix D.1 Monitoring Scales (Spatial Scales of Representativeness) To help link the site type with a monitor’s basic monitoring objective and physical location, EPA uses the spatial scale of representativeness concept as described in 40 CFR Part 58, Appendix D 1.2 (a) and (b). The goal is to correctly match the spatial scale represented by an air sample with the spatial scale most appropriate for the site type, air pollutant to be measured, and the monitoring objective. Table 5 shows the scales of representativeness that are of most interest for the air monitoring site types described above. Table 5. Spatial Scales of Representativeness Name Distance Micro Scale 0 to 100 meters Middle Scale 100 to 500 meters Neighborhood Scale 0.5 to 4 kilometers Urban Scale 4 to 50 kilometers Regional Scale 10s to 100s of kilometers Characterize the nation and the globe as a whole Source: Adapted from 40 CFR Part 58, Appendix D 1.2 National and Global Scales 2022 Air Monitoring Network Plan June 2022 Page 23 of 168 Overview of the Air Monitoring Sites According to the U.S. Census Bureau, Maricopa County’s most recent population estimate is 4, 496,588 people (U.S. Census Bureau: Quick Facts Population Estimate for Maricopa County). As per 40 CFR Part 58, the EPA mandates the minimum quantity of monitors required by a pollutant’s network to properly represent the County’s population. The MCAQD pollutant networks are designed using the concept of spatial scale representativeness and monitoring objectives. This results in CP networks that meet, and in most cases exceed, the minimum quantity of monitors required by EPA. Additional information on the siting of air monitors can be found in the Appendix II of this AMNP. Table 6. MCAQD Air Monitoring Sites Site Name Code AQS ID# Blue Point BE 04-013-4011 Buckeye BP 04-013-9702 Cave Creek CC 04-013-4008 Central Phoenix CP 04-013-3002 Durango Complex DC 04-013-9812 Dysart DY 04-013-4010 Eastwood EA 04-013-4021 Falcon Field FF 04-013-1010 Fountain Hills FH 04-013-9704 Glendale GL 04-013-2001 Higley HI 04-013-4006 Humboldt Mountain HM 04-013-9508 Mesa ME 04-013-1003 North Phoenix NP 04-013-1004 Pinnacle Peak PP 04-013-2005 South Phoenix SP 04-013-4003 South Scottsdale SS 04-013-3003 Tempe TE 04-013-4005 Thirty-Third TT 04-013-4020 West Chandler WC 04-013-4004 West 43rd Avenue WF 04-013-4009 West Phoenix WP 04-013-0019 Zuni Hills ZH 04-013-4016 2022 Air Monitoring Network Plan Latitude 33.36985 33.54558 33.82169 33.45797 33.42650 33.63718 33.41046 33.45224 33.61092 33.30995 33.30995 33.98280 33.41018 33.56034 33.70639 33.40314 33.47968 33.41123 33.46173 33.40635 33.29896 33.48378 33.68719 Longitude Location -112.62068 MC Hwy. 85 & AZ Hwy. 85 -111.60972 Usery Pass & Bush Hwy. -112.01726 32nd St. & Carefree Hwy. -112.04659 19th St. & Roosevelt St. -112.11821 27th Ave. & Durango St. -112.34185 Dysart Rd & Bell Rd. -112.00264 36th St. & Broadway -111.73327 McKellips Rd. & Greenfield Rd. -111.72534 E. Palisades Blvd. & Fountain Hills Blvd. -111.72003 59th Ave. & W. Olive Ave. -111.72003 Higley Rd. & Williams Field Rd. -111.79871 Top of Humboldt Mountain -111.86536 Alma School Rd & Broadway Rd. -112.06627 7th St. & Dunlap Ave. -111.85575 Alma School Rd. & Happy Valley Rd. -112.07526 Central Ave. & Broadway Rd. -111.91711 Miller Rd. & Thomas Rd -111.93471 College Ave. & Apache Blvd. -112.12796 33rd Ave. & Interstate 10 -112.14426 Ellis St. & Frye Rd. -111.88426 43rd Ave. & Broadway Rd. -112.14256 39th Ave. & Earll Dr. -112.29416 109th Ave. & Deer Valley Rd. June 2022 Page 24 of 168 SUMMARY OF NETWORK RESULTS AND REQUIRED INFORMATION Determining Data Quality and Acceptability This section details the results obtained from our 2021 monitoring year. The EPA has established data quality and measurement quality objectives for CP data. In addition to 40 CFR Part 58, the EPA QA Handbook for Air Pollution Measurement Systems: “Volume II: Ambient Air Quality Monitoring Program provides extensive information regarding the quality system and its components. There are seven data quality indicators (DQI) established by the EPA to determine the quality of ambient air data. Data must meet each indicator’s requirement to be certified and acceptable for use by decision makers for NAAQS compliance determinations, researchers, and the public. These indicators are precision, bias, completeness, comparability, detectability, representativeness, and sensitivity. “Timeliness” of data collection, validation, and upload to AQS are important as well. “Accuracy” is now defined as a measure of the overall agreement of a measurement to a known value and includes a combination of random error (precision) and systematic error (bias) components of both sampling and analytical operations. The MCAQD’s personnel evaluate data using these indicators, with precision, bias, and completeness being the most crucial to evaluate on an ongoing basis. Data Completeness Before considering any data set valid, it must first pass a data recovery, or completeness, test. The test requirements begin with checking completeness at hourly and 24-hour concentration values, or ‘samples. The CP pollutant data measurements from continuous analyzers are based on a valid hour, while filter samples from manual samplers are based on a 24-hour sampling period from midnight to midnight. Equation 1 shows the calculation for the data completeness percentage, which is the quantity of valid measurements divided by the quantity of scheduled measurements multiplied by one hundred. For CP data, completeness must be greater than 75% for a data set to pass the first validity test. Furthermore, CP data completeness requirements may vary and use multiple levels of data aggregation, e.g., 1-hour, 3-hour, 8hour, 24-hour, quarterly, annual, and multiple years. Equation 1: Data Completeness Percentage = Qty. of Valid Measurements Qty. of Measurements Scheduled (100) Table 7. 2021 Criteria Pollutant Data Completeness for SLAMS Pollutant CO O3 NO2 SO2 PM2.5 Percent 97.9 98.2 97.0 98.5 95.6 Complete Source: EPA AQS database – 2021 Data Completeness Report (AMP430) 2022 Air Monitoring Network Plan June 2022 PM10 TOTAL 96.8 97.2 Page 25 of 168 Summary of 2021 Criteria Pollutant Data This section covers the 2021 data generated by each network. Carbon Monoxide (CO) Figure 7 shows the CO monitoring sites operating in 2021. A CO monitor is required at one MCAQD nearroad site. The Thirty-Third site monitored for CO until Eastwood became operational. At that time, the CO monitor was moved to Eastwood. The CO data were reported to AQS, and the data are suitable for comparison to the NAAQS. Figure 7. 2021 CO Monitoring Sites 2022 Air Monitoring Network Plan June 2022 Page 26 of 168 In 2021, no exceedances or violations of the 1-hour or 8-hour CO NAAQS occurred at any MCAQD sites, and concentrations remained well below NAAQS levels. Table 8 shows the maximum and second maximum 8-hour CO averages measured. Table 8. 2021 8-hour CO Average Data Summary CO 8-hour Average Site Maximum (ppm) Buckeye 0.6 Central Phoenix 2.0 Eastwood 1.0 Mesa 1.1 South Phoenix 1.7 *Thirty-Third 2.3 West Chandler 1.2 West Phoenix 3.5 * - Site temporarily monitoring for CO in 2021 CO 8-hour Average 2nd Maximum (ppm) 0.6 2.0 1.0 1.1 1.6 1.9 1.1 2.6 Source: EPA AQS database – 2021 Quicklook Criteria Report (AMP450) Table 9. 2021 CO Monitor Requirements Population & Required CBSA Census Year Near-Road (2020) Monitors 38060 4,496,588 1 Active Near-Road Monitors 1 Additional Near-Road Monitors Needed 0 Source: U.S. Census Bureau: Quick Facts Population Estimate for Maricopa County 2022 Air Monitoring Network Plan June 2022 Page 27 of 168 Nitrogen Dioxide (NO2) Table 9 shows the five NO2 monitoring sites which operated in 2021. The NO2 monitors at the Buckeye, Central Phoenix, and West Phoenix sites are designated as SLAMS, which represent the NO2 concentrations within Maricopa County. The near-road network requires two NO2 monitors in the metropolitan area. The Thirty-Third and Eastwood site monitors are the designated near-road monitors representing the microscale by collecting source-oriented emissions from vehicular traffic on heavily travelled highways within Maricopa County. Figure 8. 2021 NO2 Monitoring Sites Data from both the area-wide and near-road monitors were reported to AQS, and the data are suitable for comparison to the NAAQS. Table 10 shows that no exceedances or violations of the NO2 annual or 1-hour NAAQS were recorded at Maricopa County monitoring sites in 2021. 2022 Air Monitoring Network Plan June 2022 Page 28 of 168 Table 10. 2021 NO2 1-hour Data Summary NO2 Maximum (ppb) NO2. 98th Percentile (ppb) NO2 3-Year Average of the 98th Percentiles (ppb) NO2 Annual Average (ppb) Buckeye 40.0 33.0 34.0 8.05 Central Phoenix 60.0 54.0 53.3 15.44 Eastwood 57.0 52.0 52.0* 16.04 Thirty-Third 65.0 59.0 58.0 25.94 West Phoenix 55.0 47.0 47.3 14.66 Site Name *- Site established in 2021, 1 year average provided. Source: EPA AQS database - 2019 – 2021 Quicklook Criteria Report (AMP450) Additional information required by EPA for the near-road NO2 monitors is shown in Table 11. Table 11. 2021 NO2 Monitor Requirements Population Max Required & Census AADT NearCBSA Year Counts Road (2020) (2020) Monitors 38060 4,496,588 295,833 2 Active NearRoad Monitors Needed NearRoad Monitors Required AreaWide Monitors Active AreaWide Monitors Needed AreaWide Monitors 2 0 1 4 0 Sources: U.S. Census Bureau: Quick Facts Population Estimate for Maricopa County ADOT – Traffic Monitoring – Annual Average Daily Traffic Count 2022 Air Monitoring Network Plan June 2022 Page 29 of 168 Ozone (O3) Figure 9 shows the seventeen SLAMS O3 monitors which operated in 2021. The data were reported to AQS, and data are suitable for comparison to the NAAQS. Figure 9. 2021 O3 Monitoring Sites 2022 Air Monitoring Network Plan June 2022 Page 30 of 168 Table 12. 2021 O3 Eight-hour Average Summary 1st 8-hr 2nd 8-hr Site Maximum Maximum (ppm) (ppm) 3rd 8-hr Maximum (ppm) 4th 8-hr Maximum (ppm) Qty. of Days > 0.070 ppm Blue Point 0.076† 0.075† 0.075† 0.072† 5 Buckeye 0.078† 0.073† 0.072† 0.071 7 Cave Creek 0.091† 0.085† 0.074† 0.074† 7 Central Phoenix 0.91† 0.084† 0.082† 0.081† 20 Dysart 0.093† 0.082† 0.078† 0.077† 12 Falcon Field 0.089† 0.087† 0.082† 0.080† 30 Fountain Hills 0.098† 0.082† 0.078† 0.076† 10 Glendale 0..097† 0.080† 0.079† 0.079† 18 Humboldt Mt. 0.074† 0.066 0.066 0.066 1 Mesa 0.0.85† 0.083† 0.083† 0.083† 32 North Phoenix 0.108† 0.085† 0.082† 0.081† 31 Pinnacle Peak 0..107† 0.086† 0.080† 0.079† 24 South Phoenix 0.080† 0.076† 0.074† 0.074† 7 South Scottsdale 0.096† 0.085† 0.082† 0.081† 28 Tempe 0.086† 0.083† 0.080† 0.079† 19 West Chandler 0.081† 0.076† 0.074† 0.073† 8 West Phoenix 0.081† 0.0.78† 0.078† 0.078† 11 † - Indicates an exceedance of the 2015 8-hr NAAQS Source: EPA AQS database - 2021 Quicklook Criteria Report (AMP450) MCAQD 2021 O3 Exceedance Day Report 2022 Air Monitoring Network Plan June 2022 Page 31 of 168 Table 13. 2021 O3 Monitor Requirements CBSA 38060 County Maricopa Population & Census Year (2020) 4,496,588 3-Year Design Value 3-Year Design Value Site(s) 0.079 AQS ID 04-013-2005 Site Name Monitoring Organization Pinnacle Peak MCAQD 8-Hour Maximum Concentration MCAQD 8-Hour Maximum Concentration Site(s) 0.108 AQS ID 04-013-1004 Site Name North Phoenix MSA Maximum 8-Hour Concentration MSA Maximum Concentration Site(s) MCAQD 0.108 AQS ID 04-013-1004 Site Name Monitoring Organization North Phoenix MCAQD Required Monitors 3 Active Monitors 17 Additional Monitors Needed 0 Sources: EPA AQS database – 2021 Quicklook Criteria Report (AMP450) U.S. Census Bureau: Quick Facts Population Estimate for Maricopa County 2022 Air Monitoring Network Plan June 2022 Page 32 of 168 Particulate Matter ≤10 Micrometers (PM10) Figure 10 shows the fifteen PM10 SLAMS monitors which operated in 2021. All PM10 monitoring stations operate continuous PM10 analyzers that collect 5-minute and hourly averaged data. All data were submitted to AQS and are suitable for comparison to the NAAQS. The EPA does not require PM10 analyzers to be collocated at the PQAO level or the national level. Figure 10. 2021 PM10 Monitoring Sites The PM10 NAAQS are violated when the expected number of exceedances at a monitor is more than one per year on average over three years. The expected number of exceedances for a site is estimated using a formula provided in 40 CFR Part 50 Appendix K. The formula uses the number of days sampling occurs and the number of valid samples that can be collected. A 3-year average of these estimated days is then used to determine compliance. Effective December 18, 2006, EPA revoked the PM10 annual primary standard; however, the annual weighted average is displayed on Table 14 for informational purposes. In recent years, some PM10 exceedances occurring in the Maricopa County CBSA have been successfully attributed to an Exceptional Event (EE). Per the EPA’s Exceptional Event Rule, an EE is an uncontrollable event that was caused by natural sources of pollution or an event that is not expected to recur at a given location. ADEQ makes the determination of which events to classify as exceptional, then they submit documentation to EPA supporting the contention that the exceedance(s) was due to an EE. If EPA R9 2022 Air Monitoring Network Plan June 2022 Page 33 of 168 concurs, the PM10 concentrations measured during the EE are not used to determine compliance with the NAAQS. The EE counts shown below on Table 14 are current as of this review’s publishing. In 2021, there were eight days that exceeded the 24-hour PM10 NAAQS at MCAQD’s sites, and two sites, Buckeye and West 43rd, violated the NAAQS. Table 14 shows the PM10 24-hour NAAQS status and data summary, including EE data values. Table 14. 2021 PM10 24-Hour Data Summary Including EE Data 2nd Maximum Maximum Number of Expected 24-Hour 24-hour 24-Hour Site Name Exceedance Average NAAQS Average Rate Exceedances (µg/m3) 3 (µg/m ) Buckeye 258†‡ 162†‡ 2 2 Central 170†‡ 125 1 1 Phoenix Durango 163†‡ 139 1 1 Complex Dysart 170†‡ 155†‡ 2 2 Glendale 173†‡ 140 1 1 Higley 219†‡ 207†‡ 2 2.1 Mesa 199†‡ 170†‡ 2 2.1 Annual Weighted Average Quantity of EEs (µg/m3) 44.4 2 36.8 1 42.9 1 30.1 21.9 37.0 22.2 2 1 2 2 North Phoenix 143 98 0 0 21.3 0 South Phoenix 144 92 0 0 33.4 0 188†‡ 180†‡ 2 2 29.8 2 208†‡ 158†‡ 2 2.1 25.2 2 West Chandler 181†‡ 165†‡ 3 3 30.7 3 West 43rd Avenue 177†‡ 166†‡ 3 3 60.7 2 West Phoenix 250† 141 1 1.1 32.4 1 Zuni Hills 248†‡ 142 1 1 25.5 1 South Scottsdale Tempe † - Indicates an exceedance of the standard ‡ - Data are associated with exceptional event flag Sources: EPA AQS database - 2021 Quicklook Criteria Report (AMP450) MCAQD 2021 PM10 Exceedance Day Report for quantity of site exceedance days and EEs 2022 Air Monitoring Network Plan June 2022 Page 34 of 168 Table 15. 2021 PM10 Monitor Requirements CBSA 38060 County Maricopa Population & Census Year (2019) 4,496,588 MCAQD Maximum 24-Hour Concentration MCAQD Maximum Concentration for Site 258 AQS ID 04-013-4011 Site Name Buckeye MSA Maximum 24-Hour Concentration MSA Maximum Concentration Site 285 AQS ID 04-021-7001 Site Name Sacaton Monitoring Organization PCAQCD Required Monitors 6-10 Active Monitors 15 Additional Monitors Needed 0 Sources: EPA AQS database – 2021 Quicklook Criteria Report (AMP450) U.S. Census Bureau: Quick Facts Population Estimate for Maricopa County 2022 Air Monitoring Network Plan June 2022 Page 35 of 168 Particulate Matter ≤2.5 Micrometers (PM2.5) Figure 11 shows the nine PM2.5 sites which operated in 2021. All PM2.5 monitors are designated as SLAMS. Data were reported to AQS, and data are suitable for comparison to the NAAQS. Figure 11. 2021 PM2.5 Monitoring Sites Each PM2.5 site operates a continuous FEM monitor that provides hourly concentration data used for NAAQS comparison. To meet the EPA’s QA collocation requirements for the PM2.5 network, a secondary monitor is operated at the West Phoenix site. This site operates one FEM continuous analyzer designated as the primary monitor and one FRM filter based PM2.5 sampler designated as the secondary monitor. The FRM filter-based secondary sampler collects a 24-hour filter sample for QA purposes every 12 days. The U.S. EPA OAQPS produces the annual sampling calendar each year and posts it on the AMTIC website. In addition to the secondary monitor’s data being used for QA purposes, if necessary, the data can be substituted for the primary monitor’s data as per 40 CFR Part 50 Appendix N. The EPA may reference data from the secondary monitor to better evaluate air quality in the area. 2022 Air Monitoring Network Plan June 2022 Page 36 of 168 Maricopa County is currently in attainment for PM2.5. The MCAQD continually assesses the existing PM2.5 network to ensure it adequately represents air quality in Maricopa County. To determine compliance with the annual PM2.5 NAAQS requires that three years of the annual average of 24-hour data be used from each monitor. To determine compliance with the 24-hour NAAQS requires that three years of the 98th percentile data be used from each PM2.5 monitor. For data to be acceptable for comparison to the annual and the 24hour NAAQS, a site’s PM2.5 monitor must meet all EPA-required operating and QA criteria. Required General Statement Regarding Changes to the PM2.5 Network In the event MCAQD needed to move or change a violating PM2.5 monitor, this procedure would be followed. MCAQD would hold a public hearing regarding the requested change. Details and documentation of the requested change, as well as all public comments, would then be forwarded to the EPA R9 for approval. Any action on MCAQD’s part will be dependent on EPA R9 approval. Please note that this statement is general in nature and required in this AMNP by 40 CFR Part 58. MCAQD does not currently have any violating PM2.5 monitors, nor does it have any proposals to move any PM2.5 monitors. 2021 PM 2.5 Data Summary In 2021, there were three days that exceeded the 24-hour PM2.5 NAAQS at one or more MCAQD sites and two sites, South Phoenix and West Phoenix, violated the NAAQS. Table 166 summarizes the 24-hour and annual data from the primary monitors only, including EE data values if any. Table 16. 2021 PM2.5 24-Hour and Annual Averages Maximum 2nd Maximum 98th Percentile Annual 24-Hour Average 24-Hour Average 24-Hour Average Average Site Name Concentration Concentration Concentration Concentration (µg/m3) (µg/m3) (µg/m3) (µg/m3) Durango Complex 53.5† 33.6 27.2 10.23 Eastwood 22.6 20.1 16.2 * Glendale 51.2† 25.9 17.8 6.99 Mesa 72.3† 26.5 18.1 6.79 North Phoenix 61.2† 23.9 16.2 7.29 South Phoenix 74.5† 33.4 30.5 9.62 Tempe 47.1† 24.9 21.9 7.59 * * * Thirty-Third * West Phoenix 222.4† 38.8† 26.0 10.72 † - Indicates an exceedance of the standard. * - Indicates that the mean does not satisfy summary criteria Source: EPA AQS database – 2021 Quicklook Criteria Report (AMP450) 2022 Air Monitoring Network Plan June 2022 Page 37 of 168 The Annual PM2.5 NAAQS Status Compliance with the primary and secondary annual NAAQS is determined by averaging three consecutive years of a site’s annual mean value using the 24-hour, or daily, concentrations. The annual PM2.5 NAAQS is met when the 3-year annual average concentration is less than or equal to 12.0 µg/m3 at each eligible monitoring site. All 3-year averages were below the PM2.5 annual NAAQS. Table 17 summarizes the 3-year annual average data. Table 17. PM2.5 3-Year Annual Averages 2019 2020 2021 Annual Annual Annual Site Name Average Average Average Concentration Concentration Concentration (µg/m3) (µg/m3) (µg/m3) Durango Complex 8.38 10.52 10.23 Eastwood not operating not operating 7.48* Glendale 6.34 7.63 6.99 Mesa 5.20 7.30 6.79 North Phoenix 6.31 7.88 7.29 South Phoenix 7.48 10.45 9.62 Tempe 5.79 6.78 7.59 Thirty-Third not operating * ** West Phoenix 8.17 10.47 10.72 * - Indicates that the mean does not satisfy summary criteria, e.g., data completeness ** - The site ceased operation 2/28/2021. Source: EPA AQS database - 2019 – 2021 Quicklook Criteria Report (AMP450) 2022 Air Monitoring Network Plan June 2022 3-Year Annual Average Concentration (µg/m3) 9.71 not available 6.97 6.43 7.16 9.18 6.72 not available 9.79 Page 38 of 168 2021 24-Hour PM2.5 NAAQS Status Compliance with the primary and secondary 24-hour PM2.5 NAAQS is determined by averaging 3consecutive years of the 24-hour 98th percentile concentration values from all eligible sites. The 24-hour NAAQS is met when 3-year average concentration values is less than or equal to 35 µg/m3. In 2021, there were three exceedance days, but no violations of the primary or secondary 24-hour NAAQS occurred. Table 18 summarizes the 3-year 24-hour 98th percentile data from the FEM analyzers. Table 18. PM2.5 3-Year 24-Hour Averages of the 98th Percentile 2019 2020 2021 3-Year 98th Percentile 98th Percentile 98th Percentile 98th Percentile 24-Hour 24-Hour 24-Hour Site Name 24-Hour Average Average Average Average Concentration Concentration Concentration Concentration (µg/m3) (µg/m3) (µg/m3) (µg/m3) Durango Complex 21.7 28.8 27.2 25.9 Eastwood not operating not operating 16.2 not available Glendale 15.1 19.0 17.8 17.3 Mesa 11.1 17.4 18.1 15.5 North Phoenix 14.5 18.4 16.2 16.4 South Phoenix 21.4 34.1 30.5 28.7 Tempe 11.9 15.6 21.9 16.5 Thirty-Third not operating 36.7 * not available West Phoenix 23.4 33.9 26.0 27.8 * - Indicates that the mean does not satisfy summary criteria, e.g., data completeness Source: EPA AQS database – 2019 - 2021 Quicklook Criteria Report (AMP450) 2022 Air Monitoring Network Plan June 2022 Page 39 of 168 Table 19 shows additional information required by EPA. The PM2.5 annual and daily design values include any measurements submitted as an EE for EPA’s concurrence. In 2021, there were no EEs submitted for PM2.5 exceedances. Maricopa County exceeds the minimum requirement for PM2.5 monitors for the CBSA. Table 19. 2021 PM2.5 Data Required by EPA CBSA 38060 County Maricopa Population & Census Year (2019) 4,496,588 MCAQD Annual Design Value 9.7 µg/m3 MCAQD Annual Design Value Site AQS ID 04-013-9812 Site Name Durango Complex MCAQD 24-Hour Design Value 28 µg/m3 MCAQD 24-Hour Design Value Sites AQS ID 04-013-4003 Site Name South Phoenix MCAQD Max 24-Hour Concentration 222.4 µg/m3 MCAQD Max 24-Hour Concentration Site AQS ID 04-013-0019 Site Name West Phoenix MSA Max 24-Hour Concentration MSA Max 24-Hour Concentration Site 222.4 µg/m3 AQS ID 04-013-0019 Site Name West Phoenix Monitoring Organization MCAQD Required Monitors 3 Active Monitors 8 Additional Monitors Needed 0 Sources: EPA AQS database - 2021 Preliminary Design Value Report (AMP480) and 2021 Quicklook Criteria Parameter Report (AMP450) U.S. Census Bureau: Quick Facts Population Estimate for Maricopa County 2022 Air Monitoring Network Plan June 2022 Page 40 of 168 Sulfur Dioxide (SO2) Figure 12 shows the two SO2 SLAMS monitors which operated in 2021. The data were reported to AQS, and the data are suitable for NAAQS comparison. Figure 12. 2021 SO2 Monitoring Sites Sulfur dioxide has a 1-hour primary standard and a 3-hour secondary standard. In 2021, no exceedances of the SO2 primary 1-hour or secondary 3-hour standard were recorded at Maricopa County monitoring sites; and no site violated the SO2 NAAQS. The EPA requires that the highest 5-minute average per hour per day be reported to AQS; however, there is no 5-minute SO2 NAAQS standard. 2022 Air Monitoring Network Plan June 2022 Page 41 of 168 Table 20. 2021 SO2 Data Summary 1-hour Maximum Concentration (ppb) 1-hour 2 Maximum Concentration (ppb) 1-hour 99th Percentile (ppb) Central Phoenix 26.0 13.0 7.0 Durango Complex 8.0 7.0 6.0 Site nd Source: EPA AQS database – 2021 Quicklook Criteria Parameters Report (AMP450) The minimum required quantity of SO2 monitors operating within the MCAQD’s network is based on either the Population Weighted Emissions Index (PWEI) and/or the EPA R9 Administrator’s input (see 40 CFR Part 58 - Appendix D 4.4.3). Table 21. 2021 SO2 Monitor Requirements Total SO2 Population & Emitted CBSA County Census Year (2017) (2020) (tpy) 38060 Maricopa 4,496,588 Population Additional Weighted Required Active Monitors Emission Monitors Monitors Needed Index 1378 3810 0 2 Sources: The EPA’s National Emissions Inventories (NEI) database – 2017 NEI Data U.S. Census Bureau: Quick Facts Population Estimate for Maricopa County 2022 Air Monitoring Network Plan June 2022 Page 42 of 168 0 Summary of 2021 Criteria Pollutant NAAQS Status This section summarizes information regarding the status of each pollutant relative to its NAAQS level. It also provides detailed information regarding pollutants that are in NAAQS violation. Table 22 summarizes the 2021 NAAQS exceedances and violations by pollutant. Table 22. 2021 NAAQS Exceedances and Violation Summary Pollutant NAAQS Status • On fifty (50) unique days, at least one monitor exceeded the 2015 8-hour primary/secondary NAAQS. • On twenty-eight (28) days, at least one monitor exceeded the 2008 8-hour O3 primary/secondary NAAQS. • Sixteen (16) sites will violate the 2015 8-hour primary/secondary NAAQS unless EPA Region 9 concurs with the EE demonstration submittals. • On eight (8) unique days, at least one monitor exceeded the 24-hour primary/secondary 1987 NAAQS. PM10 • Three (3) sites will violate the primary/secondary 1987 NAAQS unless EPA Region 9 concurs with the EE demonstration submittals. If submittals are approved, then no site will violate the NAAQS. • On three (3) unique days, at least one monitor exceeded the 2012 24-hour PM2.5 primary/secondary NAAQS. • No sites violated the 24-hour or annual primary/secondary 2012 NAAQS. SO2 NO2 CO • No exceedances or violations of the primary annual or 1-hour 2010 NAAQS or the annual secondary 2010 NAAQS occurred. • No exceedances or violations of the 1-hour or annual primary 2010 NAAQS or annual secondary 2012 NAAQS occurred. • No exceedances or violations of the 1-hour or 8-hour primary 2011 NAAQS occurred. 2022 Air Monitoring Network Plan June 2022 Page 43 of 168 2021 O3 Exceedance, Violation, and Exceptional Event Information This section discusses the monitoring results of the O3 network, and the 2015 NAAQS violation status based upon years 2019 through 2021. O3 NAAQS Exceedances The 2015 O3 NAAQS level of 0.070 ppm is exceeded when a rolling 8-hour average is 0.071 ppm or higher. Fifty exceedance days occurred in 2021. Figure 13 shows the 2021 O3 exceedance dates and concentrations by site. Exceedance day values associated with an EE are shown in red in the table below. The 2008 O3 NAAQS level of 0.075 ppm is exceeded when a rolling 8-hour average is 0.076 ppm or higher. Twenty-eight exceedances occurred in 2021. Figure 13 shows the 2021 O3 exceedance dates and concentrations by site. Exceedance day values associated with an EE are shown in red in the table below. O3 Exceptional Events and Status of EPA Concurrence Thirty-eight (38) exceedance days appear to be influenced by smoke from wildfires for which EE packages are being developed for submittal to EPA. The EPA must concur with the EE demonstration package before O3 data can be omitted from NAAQS comparisons. O3 NAAQS Violation Status - Including Exceptional Event Data A site violates the 2015 O3 NAAQS when its 3-year average of the 4th highest rolling 8-hour average concentration measured during a year exceeds 0.070 ppm. Figure 14 shows the sites that violated the 2015 O3 NAAQS and includes 2019 through 2021 average data associated with EE submittals. Figure 15 shows the sites that would violate the 2008 O3 NAAQS in 2021, if the EPA concurs with the EE demonstration packages submitted for 2019 through 2021. The graph also shows that no sites would violate the 2008 O3 NAAQS. 2022 Air Monitoring Network Plan June 2022 Page 44 of 168 2021 Ozone Exceedance Days Ozone 8-Hr Avg. 2015 NAAQS > 0.070 ppm Date 05/05/21 05/06/21 05/12/21 05/13/21 05/24/21 05/26/21 05/27/21 05/28/21 06/09/21 06/11/21 06/12/21 06/15/21 06/16/21 06/18/21 06/24/21 06/26/21 06/28/21 06/29/21 07/01/21 07/02/21 07/04/21 07/08/21 07/09/21 07/13/21 07/14/21 07/17/21 07/19/21 07/20/21 07/21/21 07/22/21 07/27/21 07/28/21 07/30/21 07/31/21 08/01/21 08/02/21 08/03/21 08/04/21 08/05/21 08/06/21 08/17/21 08/24/21 08/25/21 08/26/21 08/27/21 08/28/21 08/29/21 09/03/21 09/04/21 09/05/21 Buckeye Blue Point 0.072 0.076 0.075 0.071 Cave Creek Central Phoenix 0.071 0.091 0.071 0.074 0.073 0.091 0.080 0.082 0.077 0.071 0.093 0.075 0.075 0.073 0.071 0.075 0.073 0.074 0.071 0.071 0.071 0.081 0.078 0.073 0.071 0.074 0.079 0.084 0.078 0.074 0.073 0.075 0.071 0.078 0.072 0.073 0.073 0.076 0.082 Humboldt Mt. 0.074 0.072 0.078 0.080 0.089 0.076 0.082 0.079 0.075 0.097 0.098 0.074 0.072 0.073 0.072 0.078 0.077 0.078 0.071 0.082 0.073 0.087 0.080 0.073 0.073 0.076 0.077 0.077 0.073 0.073 0.072 0.072 0.071 0.075 0.074 * * * * * 0.073 † 0.073 0.074 0.072 0.078 0.076 0.076 0.075 0.073 0.073 Mesa 0.072 0.071 0.071 0.072 0.081 0.085 * 0.076 0.083 0.072 0.073 0.071 0.080 0.073 0.071 0.073 0.073 0.080 0.073 0.074 0.076 0.074 0.075 0.075 0.074 0.077 0.072 0.079 7 0.091 20 0.091 12 0.093 30 0.089 10 0.098 18 0.097 0.074 0.081 0.077 0.080 0.076 0.079 NOTES: Exceedances qualifying for an EE submittal to EPA are shown in RED type Highlighted dates indicate at least one site on that day exceeded the 2008 NAAQS All sites are located in or near the Ozone Nonattainment Area Please see ADEQ for information on additional statewide ozone sites 1 0.074 North Phoenix Pinnacle Peak South Phoenix 0.072 0.078 0.072 0.074 0.072 0.076 0.073 0.071 0.072 0.074 0.071 0.072 0.071 0.082 0.086 0.072 0.076 0.073 0.108 0.107 0.080 0.072 0.072 0.073 0.078 0.071 0.076 0.073 Tempe West Chandler West Phoenix 0.071 0.071 0.075 0.073 0.096 0.074 0.073 0.077 0.083 0.074 0.080 0.071 0.078 0.086 0.075 0.079 0.073 0.071 0.076 0.073 0.083 0.071 0.077 0.080 0.074 0.074 0.079 0.085 0.080 0.071 0.077 0.083 0.077 0.075 0.072 0.075 0.075 0.081 0.073 0.074 0.072 0.074 0.077 0.080 0.079 0.071 0.076 0.071 0.074 0.074 0.071 0.076 0.082 0.079 0.080 0.076 0.081 0.077 0.071 32 0.085 31 0.108 0.083 0.081 0.081 0.078 0.074 0.072 0.078 0.073 0.079 0.076 0.075 0.075 0.073 0.079 0.080 0.081 0.082 0.073 0.079 0.076 0.073 0.074 0.072 0.072 0.073 0.074 0.076 0.077 0.081 0.078 0.073 0.076 0.075 0.080 0.074 0.078 0.072 0.076 0.080 0.077 0.080 0.079 0.074 0.072 24 0.107 7 0.080 28 0.096 19 0.086 8 0.081 11 0.081 0.079 0.074 0.081 0.079 0.073 0.078 Total Number of Days where at least one monitor exceeded the NAAQS June 2022 0.076 0.075 0.078 0.078 0.072 0.080 0.075 0.085 0.072 0.081 0.072 0.073 0.076 Figure 13. 2021 O3 Exceedance Days 2022 Air Monitoring Network Plan South Scottsdale 0.072 0.074 0.075 0.078 0.071 Exceedance Days 5 7 Maximum Value 0.078 0.076 th 4 Highest Value 0.071 0.072 >0.070 * - no data - monitor down † - value corrected since original report issued Glendale 0.076 0.072 0.077 † 0.071 0.071 0.071 0.072 Falcon Field Fountain Hills 0.075 0.085 * * * Dysart Page 45 of 168 0.078 50 Figure 14. 2021 O3 NAAQS Violations by Site including Exceptional Event Source: AQS 2021 O3 8-Hour Maximum Values Report (AMP440) 2022 Air Monitoring Network Plan June 2022 Page 46 of 168 Figure 15. 2021 O3 NAAQS Violations by Site excluding Exceptional Events 2022 Air Monitoring Network Plan June 2022 Page 47 of 168 2021 PM10 Exceedance, Violation, and Exceptional Event Information This section discusses the monitoring results of the PM10 network and NAAQS violation status based upon years 2019 - 2021. PM10 NAAQS Exceedances A PM10 exceedance occurs when a monitor’s 24-hour average concentration from midnight-to-midnight is 155.5 µg/m3 or higher. Figure 16 shows the site and date of PM10 exceedances that occurred in 2021. All 2021 exceedances of the PM10 NAAQS qualify for Exceptional Events consideration and demonstration packages will be developed for EPA’s review. The 24-hour concentrations shown below include hourly PM10 data flagged as an Exceptional Event in red. 2021 Exceedance Days of the 24-Hr PM10 NAAQS PM10 24-Hr Avg. NAAQS ≥ 155 µg/m3 01/01/21 03/03/21 07/09/21 07/10/21 07/12/21 10/11/21 10/12/21 12/01/21 Buckeye Central Phoenix Durango Complex Dysart Glendale Higley 208.0 163.1 259.0 170.4 170.9 163.3 1 1 2 1 Exceedance Days 2 NOTE: Exceedances qualifying for an EE sumbittal to EPA are shown in RED Figure 16. 2021 PM10 Exceedance Days North Phoenix South South Phoenix Scottsdale Tempe West West Chandler West 43rd Phoenix Zuni Hills 250.1 177.9 166.4 248.6 199.2 188.7 208.5 219.8 170.4 180.7 158.9 160.9 181.5 2 2 2 2 3 173.0 155.9 Mesa 166.6 156.0 1 1 Number of Days in 2021 when at least one monitor exceeded the 24-Hr PM10 NAAQS 8 0 0 3 PM10 Exceptional Events and Status of EPA Concurrence Table 23 shows the EE qualifier associated with each exceedance. Please note that data holding EE concurrence from EPA are not included when determining compliance with the NAAQS. 2022 Air Monitoring Network Plan June 2022 Page 48 of 168 Table 23. 2021 PM10 Exceptional Event Information Exceedance Date Site 24-hr Avg. Conc.(µg/m3) Qualifies as EE? EE Qualifier Code* Qualifier Code Description 01/01/2021 WP 250.1 Y rh fireworks HI 208 Y WF 177.9 Y rj high winds ME 199.2 Y SS 188.7 Y TE 208.5 Y rj high winds WC 166.4 Y DY 170.4 Y GL 173 Y rj high winds ZH 208.6 Y 07/12/2021 BE 163.1 Y rj high winds BE 259 Y 10/11/2021 DY 155.9 Y rj high winds WC 160.9 Y CP 170.9 Y rj high winds 03/03/2021 07/09/2021 07/10/2021 10/12/2021 DC 163.3 Y HI 219.8 Y ME 170.4 Y SS 180.7 Y TE 158.9 Y WF 166.6 Y WC 181.5 Y The following information contrasts the PM10 NAAQS violation status with and without EPA concurrence. The EPA has yet to concur or not with EE demonstration package submittals for 2019, 2020, and 2021. PM10 24-Hour NAAQS Violation Status - Including Exceptional Event Data As per 40 CFR Part 50.6 (a), a site violates the primary and/or secondary 24-hour PM10 NAAQS when the calculated “rate of expected exceedances” is greater than one (> 1) when averaged over three consecutive years. Table 244 includes EE data and shows the maximum three-year 24-hour PM10 averages, the calculation of expected exceedances for each year, and the calculation of three-year average for the rate of expected exceedances. If the EPA does not concur with the EE demonstration packages submitted for years 2019 through 2021; then, three sites within the MCAQD network will violate the PM10 NAAQS as shown in the 3-Year Average Rate of Expected Exceedance column. 2022 Air Monitoring Network Plan June 2022 Page 49 of 168 Table 24. 2021 Violations of the PM10 24-Hour NAAQS Including EE Data 2019 2020 2021 Site 3-Year Average 24-Hour 24-Hour 24-Hour Rate of Expected Expected Expected Maximum Maximum Maximum Expected Exceedances Exceedances Exceedances (µg/m3) (µg/m3) (µg/m3) Exceedances 1.3† 237‡ 1 165‡ 1 258‡ 2 0.7 84 0 214‡ 1 170‡ 1 Buckeye Central Phoenix Durango 123 0 141 0 163‡ 1 Complex Dysart 73 0 136 0 170‡ 2 Glendale 44 0 92 0 173‡ 1 Higley 114 0 131 0 219‡ 2.1 Mesa 48 0 129 0 199‡ 2.1 North 50 0 116 0 143 0 Phoenix South 72 0 98 0 144 0 Phoenix South 74 0 192‡ 1 188‡ 2 Scottsdale Tempe 67 0 134 0 208‡ 2.1 West 76 0 263‡ 1.1 181‡ 3 Chandler West 43rd 235‡ 3 226‡ 3.1 177‡ 3 West 58 0 159‡ 1 250† 1.1 Phoenix Zuni 113 0 111 0 248‡ 1 Hills ‡ - MCAQD flagged this exceedance as an EE in AQS †- indicates a violation of the NAAQS Source: EPA AQS database - 2019 - 2021 – Quicklook Criteria Parameters Report (AMP450) 2022 Air Monitoring Network Plan June 2022 Page 50 of 168 0.3 0.7 0.3 0.7 0.7 0.0 0.0 1.0 0.7 1.4† 3.0† 0.7 0.3 PM10 24-Hour NAAQS Violation Status - Excluding Exceptional Event Data The ADEQ submits EE packages to EPA Region 9 for the 2021 PM10 exceedance days. If EPA concurs with the EE demonstration packages submitted for 2019 through 2020, then no sites will violate the PM10 NAAQS in 2021. Table 25 excludes PM10 data considered the result of an EE, regardless of the EPA’s concurrence status. The NAAQS violation status is shown in the 3-Year Average Rate of Expected Exceedance column. Table 25. 2021 Violations of the PM10 NAAQS Excluding Data Flagged as an EE 2019 Site Buckeye Central Phoenix Durango Complex Dysart Glendale Higley Mesa North Phoenix South Phoenix South Scottsdale Tempe West Chandler West 43rd Avenue West Phoenix Zuni Hills 2020 24-hour 24-hour Maximum Expected Maximum (µg/m3) Exceedances (µg/m3) 131 0 138 2021 Expected Exceedances 0 24-hour Maximum (µg/m3) 149 3-Year Average Rate Expected of Expected Exceedances Exceedances 0 0 84 0 100 0 125 0 0 123 0 141 0 131 0 0 73 44 114 48 0 0 0 0 136 76 131 129 0 0 0 0 137 107 134 170 0 0 0 0 0 0 0 0 50 0 116 0 98 0 0 72 0 98 0 92 0 0 74 0 107 0 103 0 0 67 0 134 0 83 0 0 76 0 89 0 89 0 0 150 0 130 0 155 1 0.33 58 0 120 0 141 0 0 113 0 111 0 122 0 0 Source: EPA AQS database – 2019 - 2021 Maximum Values Report (AMP440) 2022 Air Monitoring Network Plan June 2022 Page 51 of 168 2021 PM2.5 Exceedance, Violation, and Exceptional Event Information This section discusses the monitoring results of the PM2.5 network in 2021. It includes NAAQS exceedance information and violation status for 2021. PM2.5 Annual NAAQS Exceedance and Violation Status The annual primary NAAQS for PM2.5 is 12.0 µg/m3and the secondary NAAQS for PM2.5 is 15.0 µg/m3. In 2021, there were no violations of either annual NAAQS levels. Each site’s annual PM2.5 average was shown previously on Table 25. PM2.5 24-Hour NAAQS Exceedance and Violation Status The 24-hour primary and secondary NAAQS levels for PM2.5 are 35 µg/m3. If the 24-hour block-average concentration from midnight-to-midnight at a site is 35.5 µg/m3 or higher, then it is counted as an exceedance. If the 24-hour 3-year average of the 98th percentile exceeds 35 µg/m3, then the 24-hour NAAQS is violated. 2021 Exceedance Days of the 24-Hr PM2.5 NAAQS PM2.5 24-Hr Avg. NAAQS ≥ 35.5 µg/m3 Durango Complex Glendale Mesa North Phoenix South Phoenix Tempe Thirty-Third West Phoenix 01/01/2021 01/02/2021 12/05/2021 53.5 51.2 72.3 61.2 74.5 47.1 113.4 222.4 36.4 38.8 Exceedance Days * - no monitor 1 1 1 1 1 1 1 3 Number of Days in 2021 where at least one monitor exceeded the 24-Hr PM2.5 NAAQS NOTES: Exceedances qualifying for an EE sumbittal to EPA are shown in RED Diablo - sampling discontinued on 01/12/2020 Thirty-Third - PM2.5 sampling started 01/01/2020 3 Figure 17. 2021 PM2.5 Exceedance Days PM2.5 Exceptional Events and Status of EPA Concurrence There were no PM2.5 EEs for 2021, the exceedance days did not warrant seeking EE submittal packages due to no risk of the exceedance triggering a violation of the NAAQS. 2022 Air Monitoring Network Plan June 2022 Page 52 of 168 Information Regarding Maricopa County’s Supplementary Air Monitoring Programs Small Sensor Studies PurpleAir® Sensors In partnership with EPA OAQPS, MCAQD launched a three-phase monitoring project to gather pollutant data using low-cost sensors. The knowledge gained from these projects will help EPA better determine how pollutant measurements from low-cost sensors compare to those of regulatory analyzers or samplers. Phase I started in late 2018 and concluded in 2019. It used low-cost small sensors to help locate spatial hotspots of pollution, identify sources, and observe pollution dynamics during the wintertime burn season. Phase II will provide data that will help determine how well the PurpleAir® sensors measure PM pollution, as well as the effects of an arid, hot climate on the sensors’ performance and longevity. Phase II continued through 2020. Phase III involved testing a variety of popular, leading small sensors at the West Phoenix site and continued through Spring 2021. Use of Low-Cost NO2 Sensors and VOC sampling to Understand Ozone Formation in Maricopa County The Maricopa County Air Quality Department partnered with Arizona State University (ASU) to use Clarity Node-S low-cost sensors (LCS) to better understand how nitrogen dioxide (NO2) contributes to ozone formation in Maricopa County. Twelve LCS were collocated with a federal reference method (FRM) NO2 monitor and a federal equivalent method (FEM) ozone monitor. Using the resulting calibrated LCS data, ASU compared the ratio of NO2 to ozone to better understand the impact of NO2 on ozone formation. The next step is to use the NO2 data, O3 data, and VOC data, to find a correlation between the pollutants. 2022 Air Monitoring Network Plan June 2022 Page 53 of 168 Shared Air Monitoring Responsibilities For the MCAQD monitoring network, EPA requested that we work with the other S/L/T MOs within the MSA/CBSA to develop a shared monitoring agreement as specified by EPA Region 9. This is to ensure that each pollutant’s network is adequately represented throughout Maricopa and Pinal Counties, which is the MSA/CBSA geographical area. In 2019, we checked in with EPA Region 9 representatives regarding their direction on how to proceed with this requirement. We are dependent upon representatives at EPA Region 9 to provide the specifics needed in such an agreement before we can satisfy this requirement. As of May 2022, no agreement has been developed. MCAQD will again ask for guidance from EPA Region 9 on what steps can be taken to complete this task. Information Regarding Additional Air Monitoring within Maricopa County ADEQ operates its own air monitoring surveillance system within the State of Arizona, which includes the JLG Supersite in central Phoenix. JLG Supersite is part of the national air monitoring surveillance system and numerous SLAMS monitors operate there. In addition, ADEQ collects research data for other air monitoring programs at both the JLG Supersite and MCAQD’s South Phoenix site. The research data support EPA’s air monitoring programs that include, but are not limited to, identifying airborne air toxics and ozone precursors, identifying the chemical composition of PM2.5, and measuring visual haze. Specifically, ADEQ performs air monitoring in Maricopa County for the Chemical Speciation Network (CSN), the Interagency Monitoring of Protected Visual Environments (IMPROVE), the National Air Toxics Trends Stations (NATTS), the National Core multi-pollutant monitoring stations (NCore), the Photochemical Assessment Monitoring Stations (PAMS), and the Urban Air Toxics Monitoring Program (UATMP). They also operate visibility cameras and meteorological monitors within the County. Occasionally, ADEQ may temporarily use other sites for special projects. For more information about ADEQ’s network, consult the ADEQ Air Quality Division’s website. 2022 Air Monitoring Network Plan June 2022 Page 54 of 168 REFERENCES • The eCFR Title 40, Parts 50, 53, and 58 • U.S. EPA Office of Air and Radiation: https://www.epa.gov/aboutepa/about-office-air-andradiation-oar • U.S. EPA Criteria Pollutant Information: https://www.epa.gov/criteria-air-pollutants • U.S. EPA NAAQS Information: https://www.epa.gov/criteria-air-pollutants/naaqs-table • U.S. EPA Network Assessments/Plans webpage: https://www.epa.gov/amtic/state-monitoringagency-annual-air-monitoring-plans-and-network-assessments U.S. EPA NowCast Presentation: https://www3.epa.gov/airnow/ani/pm25_aqi_reporting_nowcast_overview.pdf • • U.S. EPA AIRNow webpage: https://gispub.epa.gov/airnow/ • U.S. EPA AQS AirData website: https://www.epa.gov/outdoor-air-quality-data • U.S. EPA NowCast Calculator webpage: https://www3.epa.gov/airnow/aqicalctest/nowcast.htm • U.S. EPA OAQPS QA Webpage: Ambient Air Monitoring Quality Assurance | US EPA • U.S. EPA Exceptional Events webpage: https://www.epa.gov/air-quality-analysis/treatment-datainfluenced-exceptional-events • U.S. EPA List of Areas Protected by the Regional Haze Program: https://www.epa.gov/visibility/list-areas-protected-regional-haze-program • U.S. EPA National Emissions Inventory database: https://www.epa.gov/air-emissionsinventories/2014-national-emissions-inventory-nei-data • EPA Metadata Specifications: https://www.epa.gov/geospatial/epa-metadata-technicalspecification • EPA Region 9 Air Program Information: http://www.epa.gov/region9/air/index.html • Arizona SIP Information: https://azdeq.gov/SIP • ADEQ Natural and Exceptional Events Information: https://azdeq.gov/naturalandexceptional_events • MCAQD Online Interactive Air Quality Map: http://alert.fcd.maricopa.gov/alert/Google/v3/airnow.html 2022 Air Monitoring Network Plan June 2022 Page 55 of 168 • MCAQD Annual Monitoring Plans and Network Assessments: http://www.maricopa.gov/1669/Air-Monitoring-Network-Plans-Assessments • MCAQD Clean Air Make More Restrictions Web page: https://cleanairmakemore.com/ourair/restrictions/ • MCAQD Dusts Sources, Control and Training: https://www.maricopa.gov/1913/Dust-SourcesControl-and-Training 2022 Air Monitoring Network Plan June 2022 Page 56 of 168 APPENDIX I - AIR MONITORING DATA BY SITE Site information includes site location, spatial scale, site type, and site description. 2022 Air Monitoring Network Plan June 2022 Page 57 of 168 Blue Point (BP) (04-013-9702) Site Location Bush Hwy. & Usery Pass Rd., Maricopa County Spatial Scale Urban Site Type Maximum O3 Concentration Site Description: This site began operating in July 1995. This SLAMS location monitors for O3. Meteorological monitoring includes ambient temperature and wind speed/direction. This site is located approximately 40 miles east of the Phoenix metropolitan area and represents maximum O3 concentrations downwind from an urban area. 2022 Air Monitoring Network Plan June 2022 Page 58 of 168 Buckeye (BE) (04-013-4011) Site Location AZ Hwy. 85 & MC Hwy. 85, Buckeye Spatial Scale Neighborhood for CO, and PM10 Urban for NO2 and O3 Site Type Population Exposure and Upwind Background for O3 Site Description: The Buckeye site began operating in August 2004. This SLAMS location monitors for CO, NO2, O3, and PM10. Meteorological monitoring includes ambient temperature, barometric pressure, relative humidity, and wind speed/direction. The site is located at the Maricopa County Department of Transportation - Southwest Facility. The immediate area is agriculture and encroaching residential development. 2022 Air Monitoring Network Plan June 2022 Page 59 of 168 Cave Creek (CC) (04-013-4008) Site Location 32nd St. & Carefree Hwy., Cave Creek Spatial Scale Urban Site Type Maximum O3 Concentration Site Description: The Cave Creek site began operating in July 2001. This SLAMS location monitors for O3. Meteorological monitoring includes ambient temperature, barometric pressure, rain, relative humidity, and wind speed/direction. The site is located at the Maricopa County Cave Creek Recreation Area - Park Office. 2022 Air Monitoring Network Plan June 2022 Page 60 of 168 Central Phoenix (CP) (04-013-3002) Site Location 19th St. & Roosevelt St., Phoenix Spatial Scale Neighborhood Site Type Population Exposure for CO, O3, and PM10 Highest Concentration for NO2 and SO2 Site Description: The Central Phoenix site began operating in June 1962. This SLAMS location monitors for CO, PM10, NO2, O3, and SO2. Meteorological monitoring includes ambient temperature, barometric pressure, and wind speed/direction. 2022 Air Monitoring Network Plan June 2022 Page 61 of 168 Durango Complex (DC) (04-013-9812) Site Location 27th Ave & Durango St., Phoenix Spatial Scale Neighborhood Site Type Highest Concentration Site Description: This site began operating in January 1999. This SLAMS location monitors for PM10, PM2.5, and SO2. Meteorological monitoring includes ambient temperature, barometric pressure, relative humidity, and wind speed/direction. The site is located inside the Maricopa County Flood Control District storage yard. 2022 Air Monitoring Network Plan June 2022 Page 62 of 168 Dysart (DY) (04-013-4010) Site Bell Rd. & Location Dysart Rd., Surprise Spatial Scale Neighborhood Site Type Population Exposure Site Description: The Dysart site began operating in July 2003. This SLAMS location monitors for O3 and PM10. Meteorological monitoring includes ambient temperature, barometric pressure, relative humidity, and wind speed/direction. The site is located at the Maricopa County Facility Maintenance Yard on the corner of Bell Rd. and Dysart Rd. The site is in a growing population area in the northwest valley and is surrounded by a variety of land use. 2022 Air Monitoring Network Plan June 2022 Page 63 of 168 Eastwood (EA) (04-013-4021) Site Location 36th Street & Interstate 10 Spatial Scale Micro Site Type SourceOriented Site Description: The Eastwood site began operating in March 2021. This SLAMS location monitors for CO, NO2, and PM2.5. Meteorological monitoring includes ambient temperature, relative humidity, and wind speed/direction. The site is one of two near-road air monitoring sites and is located on the south side of the I-10 East. 2022 Air Monitoring Network Plan June 2022 Page 64 of 168 Falcon Field (FF) (04-013-1010) Site Location Greenfield Rd. & McKellips Rd., Mesa Spatial Scale Neighborhood Site Type Population Exposure Site Description: This site began operating in June 1989. This SLAMS location monitors for O3. Meteorological monitoring includes ambient temperature and relative humidity. The site is located at a fire station near an airfield within a growing residential area. In 2020, wind speed and direction monitoring ceased at this location due to no longer being able to secure a wind tower to the roof of the fire station. The search for a new location in the same general area where an air monitoring shelter can be installed is underway. 2022 Air Monitoring Network Plan June 2022 Page 65 of 168 Fountain Hills (FH) (04-013-9704) Site Location Fountain Hills Blvd. & Palisades Blvd., Fountain Hills Spatial Scale Neighborhood Site Type Maximum O3 Concentration Site Description: The site began operating in April 1996 at a Fountain Hills fire station. This SLAMS location monitors for O3 only. Meteorological monitoring includes ambient temperature, barometric pressure, relative humidity, and wind speed/direction. The site is located approximately 15 miles northeast of the Phoenix metropolitan area and represents maximum O3 concentrations downwind from an urban area. Furthermore, the site sits on the fringes of the central basin district along the predominant summer/fall daytime wind direction. 2022 Air Monitoring Network Plan June 2022 Page 66 of 168 Glendale (GL) (04-013-2001) Site Location 59th Ave. & Olive Ave., Glendale Spatial Scale Neighborhood Site Type Population Exposure Site Description: The site began operating in January 1974. This SLAMS location monitors for O3, PM10, and PM2.5. Meteorological monitoring includes ambient temperature, barometric pressure, relative humidity, and wind speed/direction. The site is located on the grounds of Glendale Community College near homes, various strip malls, food establishments, and parks. 2022 Air Monitoring Network Plan June 2022 Page 67 of 168 Higley (HI) (04-013-4006) Site Location Spatial Scale Site Type Higley Rd. & Williams Field Rd., Gilbert Neighborhood Population Exposure Site Description: Originally, ADEQ began monitoring at this site in 1994 to measure background particulate concentrations near the urban limits of Maricopa County. The MCAQD assumed operating this site in July 2000. This SLAMS location monitors for PM10. Meteorological monitoring includes ambient temperature, barometric pressure, and wind speed/direction. The site is in a suburban area near homes, strip malls, and schools with limited agricultural operations nearby. 2022 Air Monitoring Network Plan June 2022 Page 68 of 168 Humboldt Mountain (HM) (04-013-9508) Site Location Humboldt Mtn. Summit Spatial Scale Regional Site Type Maximum O3 Concentration Site Description: This site began operating in August 1995. This SLAMS location monitors for O3. Meteorological monitoring includes ambient temperature and relative humidity. The site is located on Federal Aviation Agency (FAA) property within the Tonto National Forest. In 2019, the long-anticipated move of the station into a new facility occurred. The new station is about 15 meters away from the National Forest Service building that once housed it. This site is located approximately 40 miles NE of the Phoenix metropolitan area at an elevation of 5190 feet and represents extreme downwind O3 concentrations. 2022 Air Monitoring Network Plan June 2022 Page 69 of 168 Mesa (ME) (04-013-1003) Site Location Broadway Rd. & Brooks Ave., Mesa Spatial Scale Neighborhood Site Type Population Exposure Site Description: This site began operating in January 1978. This SLAMS location monitors for CO, O3, PM10, and PM2.5. Meteorological monitoring includes ambient temperature, barometric pressure, relative humidity, and wind speed/direction. The site is located at Mesa Brooks Reservoir, which is an area that contains residential, commercial, and industrial properties. 2022 Air Monitoring Network Plan June 2022 Page 70 of 168 North Phoenix (NP) (04-013-1004) Site Location 7th St. & Butler Ave., Phoenix Spatial Scale Neighborhood Site Type Population Exposure for PM10 & PM2.5; Max Concentration for O3 Site Description: This site began operating in January 1975. This SLAMS location monitors for O3, and PM10, PM2.5. Meteorological monitoring includes ambient temperature, barometric pressure, and wind speed/direction. 2022 Air Monitoring Network Plan June 2022 Page 71 of 168 Pinnacle Peak (PP) (04-013-2005) Site Location Alma School & Happy Valley Rd., Scottsdale Spatial Scale Urban Site Type Maximum O3 Concentration Site Description: This site began operating in February 1988. This SLAMS location monitors for O3 only. Meteorological monitoring includes ambient temperature, barometric pressure, relative humidity, and wind speed/direction. The site is located approximately 25 miles NE of the Phoenix metropolitan area and represents maximum O3 concentrations downwind from an urban area. This site measures O3 concentrations related to the transport of O3 from central metropolitan Phoenix. 2022 Air Monitoring Network Plan June 2022 Page 72 of 168 South Phoenix (SP) (04-013-4003) Site Location Central Ave. & Broadway Rd., Phoenix Spatial Scale Neighborhood Site Type Population Exposure Site Description: The site began operating in October 1999. This SLAMS location monitors for CO, O3, PM10, and PM2.5. Meteorological monitoring includes ambient temperature, barometric pressure, relative humidity, and wind speed/direction. The site borders a mixture of high population density residential and commercial properties. 2022 Air Monitoring Network Plan June 2022 Page 73 of 168 South Scottsdale (SS) (04-013-3003) Site Location Thomas Rd. & Miller Rd., Scottsdale Spatial Scale Neighborhood Site Type Population Exposure Site Description: This site began operating in January 1974. This SLAMS location monitors for O3 and PM10. Meteorological monitoring includes ambient temperature, barometric pressure, relative humidity, and wind speed/direction. The station is in a residential area. 2022 Air Monitoring Network Plan June 2022 Page 74 of 168 Tempe (TE) (04-013-4005) Site Location Apache Blvd. & College Ave., Tempe Spatial Scale Neighborhood Site Type Population Exposure Site Description: This site began operating in 2000. This SLAMS location monitors for O3, PM10, and PM2.5. Meteorological monitoring includes ambient temperature, rain, and wind speed/direction. The station is near the ASU Tempe Campus and surrounded by residential homes, high-density residential properties, and a railroad track. 2022 Air Monitoring Network Plan June 2022 Page 75 of 168 Thirty-Third (TT) (04-013-4020) Site Location Interstate-10 & 33rd Ave., Phoenix Spatial Scale Micro Site Type Source-Oriented Site Description: This site began operating in September 2015. This SLAMS location monitors for NO2; and temporarily monitored for CO and PM2.5 from January 2020 through February 2021. This change was needed to remain compliant with EPA requirements in lieu of the Diablo site closing. CO and PM2.5 were removed from the Thirty-Third site and relocated to the new Eastwood site in March 2021. Meteorological monitoring includes ambient temperature, barometric pressure, relative humidity, and wind speed/direction. The site is one of two near-road air monitoring sites and is located on the south side embankment adjacent to the I-10 and oriented on an east-west section of the highway, midway downslope from 33rd Avenue toward the I-10. 2022 Air Monitoring Network Plan June 2022 Page 76 of 168 West Chandler (WC) (04-013-4004) Site Location Frye Rd. & Ellis St., Chandler Spatial Scale Neighborhood Site Type Population Exposure Site Description: This site began operating in January 1995, This SLAMS location monitors for CO, O3, and PM10. Meteorological monitoring includes ambient temperature, barometric pressure, relative humidity, and wind speed/direction. The site is surrounded by residential, agricultural, and heavy industrial operations, such as semiconductor manufacturing plants and liquid air storage. The PM10 monitor’s scale of representativeness was first established as middle scale, but it was changed to neighborhood in June 2019 to better reflect land use currently surrounding the site and to match general monitoring requirements found in 40 CFR Part 58 Appendix D, Table D-1. 2022 Air Monitoring Network Plan June 2022 Page 77 of 168 West 43rd Avenue (WF) (04-013-4009) Site Location 43rd Ave. & Broadway Rd., Phoenix Spatial Scale Middle Site Type Highest Concentration Site Description: This site began operating in April 2002. This SLAMS location monitors for PM10. Meteorological monitoring includes ambient temperature, barometric pressure, and wind speed/direction. The site is located near a combination of heavy industrial operations and residential homes to measure maximum PM10 concentrations. The sources around the site include sand and gravel operations, automobile and metal recycling facilities, landfills, paved and unpaved haul roads, and cement casting. 2022 Air Monitoring Network Plan June 2022 Page 78 of 168 West Phoenix (WP) (04-013-0019) Site Location 39th Ave. & Earll Dr., Phoenix Spatial Scale Neighborhood Site Type Population Exposure for CO, NO2, O3, PM10, and Highest Concentration for PM2.5 Site Description: This site began operating in January 1984. This SLAMS location monitors for CO, NO2, O3, PM10, and PM2.5. Meteorological monitoring includes ambient temperature, barometric pressure, and wind speed/direction. The site is in an area of stable, high-density, residential properties. This is the QA collocation site for PM2.5 where one filter based PM2.5 FRM sampler operates alongside a continuous PM2.5 FEM analyzer as per 40 CFR Part 58 Appendix A. 2022 Air Monitoring Network Plan June 2022 Page 79 of 168 Zuni Hills (ZH) (04-013-4016) Site Location 109th Ave. & Deer Valley Rd., Phoenix Spatial Scale Neighborhood Site Type Population Exposure Site Description: This site began operating in December 2009. This SLAMS location monitors for PM10. Meteorological monitoring includes ambient temperature and wind speed/direction. The station is located on the campus of the Zuni Hills Elementary School. 2022 Air Monitoring Network Plan June 2022 Page 80 of 168 APPENDIX II - EPA-REQUIRED SITE METADATA This appendix provides site and monitor metadata required by 40 CFR §58.10 and Appendices A, B, C, D, and E, as applicable. Information includes, but is not limited to, quality assurance metrics, site identification and type, each monitor’s type, and scale of representativeness as well as basic monitoring objective, collection frequency of air samples, i.e., operating schedule. (See Appendix VII for the Glossary) 2022 Air Monitoring Network Plan June 2022 Page 81 of 168 BLUE POINT County Abbreviation: BP AQS ID: 04-013-9702 Address: Bush Highway & Usery Pass Rd., Maricopa County Lat/Long Coordinates: 33.54558 N, -111.60972 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant O3 Parameter Code 44201 Parameter Occurrence Code 1 Collection Frequency Continuous Analysis Method (filter samples only) Not Applicable Any Proposal to Remove or Move Monitor? No Does monitor operation meet 40 CFR Part 58, Subpart G – Appendices A, C, D, Yes and E? Is site suitable for comparison to the annual PM2.5 NAAQS as per §58.30? Not Applicable Are Data Comparable to Respective NAAQS? Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 (Gases) 25 Frequency of 1-Point QC (Precision) Checks Bi-Weekly Number of Flow Rate Verifications Performed in 2021 (PM) Not Applicable Frequency of Flow Rate Verifications Number of PE Audits Performed in 2021 2 05/13/21 Dates of PE Audits 11/19/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Date of Annual Data Certification Submission 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 01/01/1993 Monitor Type SLAMS Monitor Make - Model Teledyne API – Model 400T Method Code 087 Method Type (FRM, FEM, ARM) FEM Appendix D Requirements - Network Design Criteria Site Type Max Ozone Concentration Basic Monitoring Objective NAAQS Comparison Monitoring Scale (Spatial Scale Represented) Urban Monitoring Season Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable Probe Height (distance above ground level to inlet) 4.4 meters 2022 Air Monitoring Network Plan June 2022 Page 82 of 168 BLUE POINT Airflow Arc (degrees around probe/inlet) 360º Probe/Sample Line Material (Gases) FEP Pollutant Sample Residence Time (seconds) (Gases) 8.51 Horizontal 0 meters Distance from Supporting Structure/Roof (horizontal distance and vertical distance to probe/inlet) Vertical 2 meters Distance from Obstructions on Roof (horizontal distance to Horizontal no obstruction obstruction and vertical height of obstruction above Vertical no obstruction probe/inlet) Distance from Obstructions Not on Roof (horizontal distance Horizontal no obstruction to the obstruction and vertical height of obstruction above Vertical 11 meters probe/inlet) Distance from Dripline of Closest Tree(s) 11 meters Distance to Furnace or Flue No Furnace or Flue Nearest Major Roadway Bush Highway Distance and Direction to Road 160 meters, S Average Daily Traffic Count 1,000 Groundcover Pavement Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 83 of 168 BUCKEYE County ID: BE AQS ID: 04-013-4011 Address 26453 W MC85 Coordinates: 33.36985 N, -112.62068 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant CO NO2 O3 PM10 Parameter Code 42101 42602 44201 81102 Parameter Occurrence Code 1 1 1 1 Collection Frequency Continuous Continuous Continuous Continuous Analysis Method (filter samples only) Not Applicable Not Applicable Not Applicable Not Applicable Any Proposal to Remove or Move Monitor? No No No No Does monitor operation meet 40 CFR Part 58, Yes Yes Yes Yes Subpart G – Appendices A, C, D, and E? Is site suitable for comparison to the annual Not Applicable Not Applicable Not Applicable Not Applicable PM2.5 NAAQS as per §58.30? Are Data Comparable to Respective NAAQS? Yes Yes Yes Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks 26 26 26 Performed in 2021 (Gases) Not Applicable Frequency of 1-Point QC (Precision) Checks Bi-Weekly Bi-Weekly Bi-Weekly Number of Flow Rate Verifications Performed in 2021 (PM) Frequency of Flow Rate Verifications Number of PE Audits Performed in 2021 Dates of PE Audits Annual Precision & PE Audit Reports Submitted to AQS? Date of Annual Data Certification Submission Not Applicable Not Applicable Not Applicable Bi-Weekly 3 2 2 01/25/21 06/14/21 08/09/21 01/11/21 07/12/21 06/01/21 12/13/21 01/11/21 04/28/21 07/12/21 10/04/21 Yes Yes Yes Yes 04/22/22 04/22/22 04/22/22 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 08/01/2004 08/01/2004 08/01/2004 Monitor Type SLAMS SLAMS SLAMS Teledyne API – Teledyne API – Teledyne API – Monitor Make - Model Model 300T Model 200T Model 400T Method Code 093 099 087 PM Monitor Flow Type Not Applicable Not Applicable Not Applicable PM Monitor Collection Type Not Applicable Not Applicable Not Applicable Method Type (FRM, FEM, ARM) FRM FRM FEM Appendix D Requirements - Network Design Criteria 2022 Air Monitoring Network Plan 27 June 2022 08/01/2004 SLAMS Thermo – TEOM 1405-S 079 Low Volume Size Specific FEM Page 84 of 168 Site Type Basic Monitoring Objective BUCKEYE Population Population Exposure Exposure NAAQS NAAQS Comparison Comparison Upwind Background NAAQS Comparison Population Exposure NAAQS Comparison Monitoring Scale Neighborhood Urban Urban Neighborhood (Spatial Scale Represented) Monitoring Season Sep-Mar Jan-Dec Jan-Dec Jan-Dec Network Meets Minimum Number of Yes Yes Yes Yes Monitors Required? Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable Not Applicable Not Applicable Not Applicable Probe Height (distance above ground level to 4 meters 4 meters 4 meters 4 meters inlet) Probe Sample Line Material FEP FEP FEP Not Applicable Pollutant Sample Residence Time (seconds) 9.87 9.87 9.87 Not Applicable Airflow Arc 360º 360º 360º 360º Distance from Supporting Horizontal 0 meters 0 meters 0 meters 0 meters Structure/Roof (horizontal distance and vertical distance to Vertical 4.4 meters 4.4 meters 4.4 meters 4.4 meters probe/inlet) Distance from Obstructions on Horizontal no obstruction no obstruction no obstruction no obstruction Roof (horizontal distance to obstruction and vertical height of obstruction above Vertical no obstruction no obstruction no obstruction no obstruction probe/inlet) Distance from Obstructions Horizontal no obstruction no obstruction no obstruction no obstruction Not on Roof (horizontal distance to the obstruction and vertical height of obstruction Vertical no obstruction no obstruction no obstruction no obstruction above probe/inlet) Distance from Dripline of Closest Tree(s) 7.6 meters 7.6 meters 7.6 meters 7.6 meters No Furnace or No Furnace or No Furnace or Distance to Furnace or Flue No Furnace or Flue Flue Flue Flue Nearest Major Roadway U.S. Hwy 85 U.S. Hwy 85 U.S. Hwy 85 U.S. Hwy 85 Distance and Direction to Road 31 meters, N 31 meters, N 31 meters, N 31 meters, N Average Daily Traffic Count 3,000 3,000 3,000 3,000 Groundcover Pavement Pavement Pavement Pavement Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 85 of 168 CAVE CREEK County ID: CC AQS ID: 04-013-4008 Address: 37019 N Lava Lane, Phoenix Coordinates: 33.82169 N, -112.01726 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant O3 Parameter Code 44201 Parameter Occurrence Code 1 Collection Frequency Continuous Analysis Method (filter samples only) Not Applicable Any Proposal to Remove or Move Monitor? No Does monitor operation meet 40 CFR Part 58, Subpart G – Appendices A, C, D, Yes and E? Is site suitable for comparison to the annual PM2.5 NAAQS as per §58.30? Not Applicable Are Data Comparable to Respective NAAQS? Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 (Gases) 26 Frequency of 1-Point QC (Precision) Checks Bi-weekly 2Number of Flow Rate Verifications Performed in 2021 (PM) Not Applicable Frequency of Flow Rate Verifications Number of PE Audits Performed in 2021 3 03/09/21 Dates of PE Audits 04/06/21 10/05/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Date of Annual Data Certification Submission 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 07/20/2001 Monitor Type SLAMS Monitor Make - Model Teledyne - API Model 400T Method Code 087 Method Type (FRM, FEM, ARM) FEM Appendix D Requirements - Network Design Criteria Site Type Max Ozone Concentration Basic Monitoring Objective NAAQS Comparison Monitoring Scale (Spatial Scale Represented) Urban Monitoring Season Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable Probe Height (distance above ground level to inlet) 4.4 meters Airflow Arc 360º 2022 Air Monitoring Network Plan June 2022 Page 86 of 168 CAVE CREEK Probe Sample Line Material FEP Pollutant Sample Residence Time (seconds) 9.95 seconds Horizontal 0 meters Distance from Supporting Structure/Roof (horizontal distance and vertical distance to probe/inlet) Vertical 2 meters Distance from Obstructions on Roof (horizontal distance Horizontal no obstruction to obstruction and vertical height of obstruction above Vertical no obstruction probe/inlet) Distance from Obstructions Not on Roof (horizontal Horizontal no obstruction distance to the obstruction and vertical height of Vertical 10 meters obstruction above probe/inlet) Distance from Dripline of Closest Tree(s) 10 meters Distance to Furnace or Flue No Furnace or Flue Nearest Major Roadway 32nd Street Distance and Direction to Road 240 meters, NE Average Daily Traffic Count 1,000 Groundcover Pavement Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 87 of 168 CENTRAL PHOENIX County ID: CP AQS ID: 04-013-3002 Address: 1645 E Roosevelt St., Phoenix Coordinates: 33.45797 N, -112.04659 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant CO NO2 O3 SO2 PM10 Parameter Code 42101 42602 44201 42401 81102 Parameter Occurrence Code 1 6 1 4 4 Collection Frequency Continuous Continuous Continuous Continuous Continuous Analysis Method Not Not Not Not Not Applicable (filter samples only) Applicable Applicable Applicable Applicable Any Proposal to Remove or No No No No No Move Monitor? Does monitor operation meet 40 CFR Part 58, Subpart G – Yes Yes Yes Yes Yes Appendices A, C, D, and E? Is site suitable for comparison Not Not Not Not to the annual PM2.5 NAAQS as Not Applicable Applicable Applicable Applicable Applicable per §58.30? Are Data Comparable to Yes Yes Yes Yes Yes Respective NAAQS? Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed 26 26 27 26 Not in 2021 (Gases) Applicable Frequency of 1-Point QC Bi-weekly Bi-weekly Bi-weekly Bi-weekly (Precision) Checks Number of Flow Rate Verifications Performed in 26 Not Not Not 2021 (PM) Not Applicable Applicable Applicable Applicable Frequency of Flow Rate Bi-weekly Verifications Number of PE Audits 2 3 2 2 4 Performed in 2021 01/06/21 01/06/21 04/13/21 05/11/21 06/07/21 05/26/21 Dates of PE Audits 04/27/21 07/07/21 11/23/21 12/07/21 09/16/21 10/12/21 10/14/21 Annual Precision & PE Audit Yes Yes Yes Yes Yes Reports Submitted to AQS? Date of Annual Data 04/22/22 04/22/22 04/22/22 04/22/22 04/22/22 Certification Submission Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 10/01/1966 01/01/1967 06/01/1967 01/01/1965 04/01/1985 2022 Air Monitoring Network Plan June 2022 Page 88 of 168 Monitor Type Monitor Make - Model Method Code PM Monitor Flow Type PM Monitor Collection Type Method Type (FRM, FEM, ARM) CENTRAL PHOENIX SLAMS SLAMS SLAMS Teledyne API Teledyne API - Teledyne API - Model 300T Model 200T - Model 400T 093 099 087 Not Not Not Applicable Applicable Applicable Not Not Not Applicable Applicable Applicable FRM FRM FEM SLAMS Teledyne API - Model 100T 100 Not Applicable Not Applicable SLAMS Thermo TEOM 1405-S 079 FEM FEM Appendix D Requirements - Network Design Criteria Population Highest Population Highest Site Type Exposure Concentration Exposure Concentration NAAQS NAAQS NAAQS NAAQS Basic Monitoring Objective Comparison Comparison Comparison Comparison Monitoring Scale (Spatial Scale Neighborhood Neighborhood Neighborhood Neighborhood Represented) Monitoring Season Jan-Dec Jan-Dec Jan-Dec Jan-Dec Network Meets Minimum Number of Monitors Yes Yes Yes Yes Required? Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated Not Not Not Not Applicable samplers Applicable Applicable Applicable Probe Height (distance above ground level to 4.4 meters 4.4 meters 4.4 meters 4.4 meters inlet) Airflow Arc 360º 360º 360º 360º Probe Sample Line Material Pollutant Sample Residence Time (seconds) Distance from Horizontal Supporting Structure/Roof (horizontal distance and Vertical vertical distance to probe/inlet) Distance from Obstructions on Horizontal Roof (horizontal distance to Vertical obstruction and vertical height of FEP Low Volume Size Specific Population Exposure NAAQS Comparison Neighborhood Jan-Dec Yes Not Applicable 4.4 meters 360º Not Applicable Not Applicable FEP FEP FEP 14.5 14.5 14.5 0 meters 0 meters 0 meters 0 meters 0 meters 2 meters 2 meters 2 meters 2 meters 2.4 meters no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction 14.5 2022 Air Monitoring Network Plan June 2022 Page 89 of 168 obstruction above probe/inlet) Distance from Obstructions Not Horizontal on Roof (horizontal distance to the obstruction and Vertical vertical height of obstruction above probe/inlet) Distance from Dripline of Closest Tree(s) Distance to Furnace or Flue CENTRAL PHOENIX no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no tree no tree no tree no tree no tree No Furnace or Flue th 16 Street No Furnace or Flue th 16 Street No Furnace or No Furnace or Flue Flue th th 16 Street 16 Street No Furnace or Flue th 16 Street Nearest Major Roadway A Distance and Direction to 88 meters, W 88 meters, W 88 meters, W 88 meters, W 91 meters, W Road Average Daily Traffic Count 24,000 24,000 24,000 24,000 24,000 Nearest Major Roadway B Roosevelt St. Roosevelt St. Roosevelt St. Roosevelt St. Roosevelt St. Distance and Direction to 75 meters, N 75 meters, N 75 meters, N 75 meters, N 75 meters, N Road Average Daily Traffic Count 21,637 21,637 21,637 21,637 21,637 Groundcover Pavement Pavement Pavement Pavement Pavement Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 90 of 168 DURANGO COMPLEX County ID: DC AQS ID: 04-013-9812 Address: 2702 RC Esterbrooks Blvd., Phoenix Coordinates: 33.42650 N, -112.11812 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant PM10 PM2.5 SO2 Parameter Code 81102 88101 42401 Parameter Occurrence Code 1 3 1 Collection Frequency Continuous Continuous Continuous Analysis Method (filter samples only) Not Applicable Not Applicable Not Applicable Any Proposal to Remove or Move Monitor? No No No Does monitor operation meet 40 CFR Part 58, Subpart Yes Yes Yes G – Appendices A, C, D, and E? Is site suitable for comparison to the annual PM2.5 Not Applicable Yes Not Applicable NAAQS as per §58.30? Are Data Comparable to Respective NAAQS? Yes Yes Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed 28 in 2021 (Gases) Not Applicable Not Applicable Frequency of 1-Point QC (Precision) Checks Bi-Weekly Number of Flow Rate Checks Performed in 2021 (PM) 28 28 Not Applicable Frequency of Flow Rate Verifications Bi-Weekly Bi-Weekly Number of PE Audits Performed in 2021 5 5 3 01/20/21 01/19/21 04/13/21 04/13/21 02/18/21 05/12/21 05/12/21 05/12/21 Dates of PE Audits 07/14/21 07/14/21 11/02/21 10/05/21 10/05/21 Annual Precision & PE Audit Reports Submitted to Yes Yes Yes AQS? 04/22/22 04/22/22 04/22/22 Date of Annual Data Certification Submission Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 07/01/1999 07/01/2005 01/01/2011 Monitor Type SLAMS SLAMS SLAMS Thermo Thermo Teledyne API – Monitor Make - Model TEOM 1405TEOM 1405-DF 100T DF Method Code 208 182 100 PM Monitor Flow Type Low Volume Low Volume Not Applicable PM Monitor Collection Type Dichotomous Dichotomous Not Applicable Method Type (FRM, FEM, ARM) FEM FEM FEM Appendix D Requirements - Network Design Criteria 2022 Air Monitoring Network Plan June 2022 Page 91 of 168 DURANGO COMPLEX Population Highest Highest Site Type Exposure Concentration Concentration NAAQS NAAQS NAAQS Basic Monitoring Objective Comparison Comparison Comparison Monitoring Scale (Spatial Scale Represented) Neighborhood Neighborhood Middle Monitoring Season Jan-Dec Jan-Dec Jan-Dec Network Meets Minimum Number of Monitors Yes Yes Yes Required? Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable Not Applicable Not Applicable Distance between PM monitor inlets? 0 meters 0 meters Not Applicable 4.4 meters 4.4 meters Probe Height (distance above ground level to inlet) 4.4 meters Airflow Arc 360º 360º 360º Probe Sample Line Material Not Applicable Not Applicable FEP Pollutant Sample Residence Time (seconds) Not Applicable Not Applicable 6.51 Distance from Supporting Horizontal 0 meters 0 meters 0 meters Structure/Roof (horizontal distance Vertical 2 meters 2 meters 2 meters and vertical distance to probe/inlet) Distance from Obstructions on Roof Horizontal no obstructions no obstructions no obstructions (horizontal distance to obstruction and vertical height of obstruction above Vertical no obstructions no obstructions no obstructions probe/inlet) Distance from Obstructions Not on Horizontal 12 meters 12 meters 12 meters Roof (horizontal distance to the obstruction and vertical height of Vertical 6 meters 6 meters 6 meters obstruction above probe/inlet) Distance from Dripline of Closest Tree(s) 10.7 meters 10.7 meters 10.7 meters No Furnace or No Furnace or No Furnace or Distance to Furnace or Flue Flue Flue Flue th th Nearest Major Roadway 27 Ave 27 Ave 27th Ave Distance and Direction to Road 78 meters, E 76 meters, E 76 meters, E Average Daily Traffic Count 16,000 16,000 16,000 Groundcover Pavement Pavement Pavement Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 92 of 168 DYSART County ID: DY AQS ID: 04-013-4010 Address: 16825 N Dysart Rd., Surprise Coordinates: 33.63718 N, -112.34185 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant O3 PM10 Parameter Code 44201 81102 Parameter Occurrence Code 1 1 Collection Frequency Continuous Continuous Analysis Method (filter samples only) Not Applicable Not Applicable Any Proposal to Remove or Move Monitor? No No Does monitor operation meet 40 CFR Part 58, Subpart G – Yes Yes Appendices A, C, D, and E? Is site suitable for comparison to the annual PM2.5 NAAQS as per Not Applicable Not Applicable §58.30? Are Data Comparable to Respective NAAQS? Yes Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 26 (Gases) Not Applicable Frequency of 1-Point QC (Precision) Checks Bi-Weekly Number of Flow Rate Verifications Performed in 2021 (PM) 26 Not Applicable Frequency of Flow Rate Verifications Bi-Weekly Number of PE Audits Performed in 2021 3 4 01/20/21 02/01/21 04/13/21 Dates of PE Audits 04/13/21 07/08/21 10/11/21 10/11/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Yes Date of Annual Data Certification Submission 04/22/22 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 7/21/2003 Monitor Type SLAMS Teledyne API – Monitor Make - Model 400T Method Code 087 PM Monitor Flow Type Not Applicable PM Monitor Collection Type Not Applicable Method Type (FRM, FEM, ARM) FEM Appendix D Requirements - Network Design Criteria Population Site Type Exposure NAAQS Basic Monitoring Objective Comparison 2022 Air Monitoring Network Plan June 2022 07/14/2003 SLAMS Thermo - TEOM 1405-S 079 Low Volume Size Specific FEM Population Exposure NAAQS Comparison Page 93 of 168 DYSART Monitoring Scale (Spatial Scale Represented) Neighborhood Neighborhood Monitoring Season Jan-Dec Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable Not Applicable Probe Height (distance above ground level to inlet) 5.4 meters 5.2 meters Airflow Arc 360º 360º Probe Sample Line Material FEP Not Applicable Pollutant Sample Residence Time (seconds) 4.79 Not Applicable 0 meters 0 meters Distance from Supporting Structure/Roof (horizontal Horizontal distance and vertical distance to probe/inlet) Vertical 3 meters 3 meters Distance from Obstructions on Roof (horizontal Horizontal no obstructions no obstructions distance to obstruction and vertical height of Vertical no obstructions no obstructions obstruction above probe/inlet) Distance from Obstructions Not on Roof (horizontal Horizontal 15.2 meters 15.2 meters distance to the obstruction and vertical height of Vertical 3 meters 3 meters obstruction above probe/inlet) Distance from Dripline of Closest Tree(s) no tree no tree No Furnace or No Furnace or Flue Distance to Furnace or Flue Flue Nearest Major Roadway A Dysart Dysart Distance and Direction to Road 17 meters, W 12 meters, W Average Daily Traffic Count 12,000 12,000 Nearest Major Roadway B Bell Rd Bell Rd Distance and Direction to Road 495 meters, N 460 meters, N Average Daily Traffic Count 43,000 43,000 Pavement / Groundcover Pavement / Gravel Gravel Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 94 of 168 Eastwood County ID: EA AQS ID: 04-013-4021 Address: 4135 S. 36th Street, Phoenix Coordinates: 33.41046 N, -112.00264 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant CO NO2 PM2.5 Parameter Code 42101 42602 88101 Parameter Occurrence Code 1 1 3 Collection Frequency Continuous Continuous Continuous Analysis Method (Filter samples only Not Applicable Not Applicable Not Applicable Analytical Laboratory (filter samples only) Not Applicable Not Applicable Not Applicable Any Proposal to Remove or Move Monitor? No No No Does monitor operation meet 40 CFR Part 58, Yes Yes Yes Subpart G – Appendices A, C, D, and E? Is site suitable for comparison to the annual Not Applicable Not Applicable Yes PM2.5 NAAQS as per §58.30? Are Data Comparable to Respective NAAQS? Yes Yes Ye s Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks 25 23 Performed in 2021 (Gases) Not Applicable Frequency of 1-Point QC (Precision) Checks Bi-Weekly Bi-Weekly Number of Flow Rate Verifications Performed 22 in 2021 (PM) Not Applicable Not Applicable Frequency of Flow Rate Verifications Bi-Weekly Number of PE Audits Performed in 2021 2 2 3 06/03/21 03/18/21 06/03/21 Dates of PE Audits 09/09/21 09/09/21 08/25/21 12/02/21 Annual Precision & PE Audit Reports Yes Yes Yes Submitted to AQS? Date of Annual Data Certification Submission 04/22/22 04/22/22 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 03/05/2021 03/05/2021 03/05/2021 Monitor Type SLAMS SLAMS SLAMS Thermo Teledyne - API Monitor Make - Model Teledyne - API 300T TEOM 1405200T DF Method Code 93 99 182 PM Monitor Flow Type Not Applicable Not Applicable Low Volume PM Monitor Collection Type Not Applicable Not Applicable Dichotomous Method Type (FRM, FEM, ARM) FRM FRM FEM Appendix D Requirements - Network Design Criteria SourceSite Type Source-Oriented Source-Oriented Oriented 2022 Air Monitoring Network Plan June 2022 Page 95 of 168 Basic Monitoring Objective NAAQS Comparison NAAQS Comparison Micro Jan-Dec Monitoring Scale (Spatial Scale Represented) Micro Monitoring Season Jan-Dec Network Meets Minimum Number of Yes Yes Monitors Required? Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable Not Applicable Probe Height (distance above ground level to 4.3 meters 4.3 meters inlet) Airflow Arc 360º 360º Probe Sample Line Material FEP FEP Pollutant Sample Residence Time (seconds) 7.33 7.33 Filter Sample Material Not Applicable Not Applicable Distance from Supporting Structure/Roof (horizontal distance and vertical distance to probe/inlet) NAAQS Comparison Micro Jan-Dec Yes Not Applicable 5 meters 360º Not Applicable Not Applicable Not Applicable Horizontal 0 meters 0 meters 0 meters Vertical 2 meters 2 meters 0.6 meters no obstruction no Vertical obstruction no Horizontal obstruction no Vertical obstruction no tree no obstruction no no obstruction obstruction no Distance from Obstructions Not on Roof no obstruction obstruction (horizontal distance to the obstruction and vertical height of obstruction above no no obstruction probe/inlet) obstruction Distance from Dripline of Closest Tree(s) no tree no tree No Furnace or No Furnace or Distance to Furnace or Flue No Furnace or Flue Flue Flue Nearest Major Roadway I-10 I-10 I-10 Distance and Direction to Road 24 meters, N 24 meters, N 24 meters, N Average Daily Traffic Count 245,632 245,632 245,632 Groundcover Gravel Gravel Gravel Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) Distance from Obstructions on Roof (horizontal distance to obstruction and vertical height of obstruction above probe/inlet) Horizontal 2022 Air Monitoring Network Plan June 2022 no obstruction Page 96 of 168 FALCON FIELD County ID: FF AQS ID: 04-013-1010 Address: 4530 E McKellips Rd, Mesa Coordinates: 33.45244 N, -111.73327 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant O3 Parameter Code 44201 Parameter Occurrence Code 1 Collection Frequency Continuous Analysis Method (filter samples only) Not Applicable Any Proposal to Remove or Move Monitor? No Does monitor operation meet 40 CFR Part 58, Subpart G – Appendices A, C, D, and E? Yes Is site suitable for comparison to the annual PM2.5 NAAQS as per §58.30? Not Applicable Are Data Comparable to Respective NAAQS? Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 (Gases) 26 Frequency of 1-Point QC (Precision) Checks Bi-Weekly Number of Flow Rate Verifications Performed in 2021 (PM) Not Applicable Frequency of Flow Rate Verifications Number of PE Audits Performed in 2021 2 01/07/21 Dates of PE Audits 07/06/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Date of Annual Data Certification Submission 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 06/01/1989 Monitor Type SLAMS Monitor Make - Model Teledyne API – 400T Method Code 087 Method Type (FRM, FEM, ARM) FEM Appendix D Requirements - Network Design Criteria Site Type Population Exposure Basic Monitoring Objective NAAQS Comparison Monitoring Scale (Spatial Scale Represented) Neighborhood Monitoring Season Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable Probe Height (distance above ground level to inlet) 4.4 meters Airflow Arc 360º Probe Sample Line Material FEP Pollutant Sample Residence Time (seconds) 2022 Air Monitoring Network Plan June 2022 19.11 Page 97 of 168 FALCON FIELD Distance from Supporting Structure/Roof (horizontal distance and vertical distance to probe/inlet) Horizontal Vertical 1 meter 2 meters Distance from Obstructions on Roof (horizontal distance to obstruction and vertical height of obstruction above probe/inlet) Horizontal no obstruction Vertical no obstruction Distance from Obstructions Not on Roof (horizontal distance to the obstruction and vertical height of obstruction above probe/inlet) Horizontal 24.4 meters Vertical 3 meters Distance from Dripline of Closest Tree(s) no tree Distance to Furnace or Flue No Furnace or Flue Nearest Major Roadway McKellips Distance and Direction to Road 58 meters, S Average Daily Traffic Count 29,000 Groundcover Pavement Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 98 of 168 FOUNTAIN HILLS County ID: FH AQS ID: 04-013-9704 Address: 16426 E. Palisades Blvd., Fountain Hills Coordinates: 33.61092 N, -111.72534 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant O3 Parameter Code 44201 Parameter Occurrence Code 1 Collection Frequency Continuous Analysis Method (filter samples only) Not Applicable Any Proposal to Remove or Move Monitor? No Does monitor operation meet 40 CFR Part 58, Subpart G – Appendices A, C, D, and Yes E? Is site suitable for comparison to the annual PM2.5 NAAQS as per §58.30? Not Applicable Are Data Comparable to Respective NAAQS? Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 (Gases) 26 Frequency of 1-Point QC (Precision) Checks Bi-Weekly Number of Flow Rate Verifications Performed in 2021 (PM) Not Applicable Frequency of Flow Rate Verifications Number of PE Audits Performed in 2021 2 02/24/21 Dates of PE Audits 09/08/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Date of Annual Data Certification Submission 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 04/01/1996 Monitor Type SLAMS Monitor Make – Model Teledyne API – 400T Method Code 087 Method Type (FRM, FEM, ARM) FEM Appendix D Requirements - Network Design Criteria Site Type Population Exposure Basic Monitoring Objective NAAQS Comparison Monitoring Scale (Spatial Scale Represented) Neighborhood Monitoring Season Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable Probe Height (distance above ground level to inlet) 4.4 meters Airflow Arc 360º Probe Sample Line Material FEP 2022 Air Monitoring Network Plan June 2022 Page 99 of 168 FOUNTAIN HILLS Pollutant Sample Residence Time (seconds) 9.01 Distance from Supporting Structure/Roof (horizontal distance and vertical distance to probe/inlet) Horizontal 2 meters /Vertical 0 meters Distance from Obstructions on Roof (horizontal distance to obstruction and vertical height of obstruction above probe/inlet) Horizontal no obstructions Vertical no obstructions Distance from Obstructions Not on Roof (horizontal distance to Horizontal 24.4 meters the obstruction and vertical height of obstruction above Vertical 4.8 meters probe/inlet) Distance from Dripline of Closest Tree(s) 15 meters Distance to Furnace or Flue No Furnace or Flue Nearest Major Roadway Palisades Blvd Distance and Direction to Road 70 meters, SW Average Daily Traffic Count 8,000 Groundcover Pavement Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 100 of 168 GLENDALE County ID: GL AQS ID: 04-013-2001 Address: 6001 W Olive, Glendale Coordinates: 33.57453 N, -112.19193 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant O3 PM10 PM2.5 Parameter Code 44201 81102 88101 Parameter Occurrence Code 1 1 3 Collection Frequency Continuous Continuous Continuous Not Not Not Analysis Method (filter samples only) Applicable Applicable Applicable Any Proposal to Remove or Move Monitor? No No No Does monitor operation meet 40 CFR Part 58, Subpart G – Yes Yes Yes Appendices A, C, D, and E? Is site suitable for comparison to the annual PM2.5 NAAQS Not Not Yes as per §58.30? Applicable Applicable Are Data Comparable to Respective NAAQS? Yes Yes Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 26 Not Not 2021 (Gases) Applicable Applicable Frequency of 1-Point QC (Precision) Checks Bi-Weekly Number of Flow Rate Verifications Performed in 2021 (PM) 25 25 Not Applicable Frequency of Flow Rate Verifications Bi-Weekly Bi-Weekly Number of PE Audits Performed in 2021 2 4 4 02/25/21 02/25/21 05/06/21 05/06/21 05/06/21 Dates of PE Audits 08/12/21 08/12/21 10/07/21 11/04/21 11/04/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Yes Yes 04/22/22 04/22/22 04/22/22 Date of Annual Data Certification Submission Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 01/01/1974 07/01/1987 Monitor Type SLAMS SLAMS Thermo Teledyne API Monitor Make - Model TEOM 1405– 400T DF Method Code 087 208 Not PM Monitor Flow Type Low Volume Applicable Not PM Monitor Collection Type Dichotomous Applicable Method Type (FRM, FEM, ARM) FEM FEM 2022 Air Monitoring Network Plan June 2022 6/1/2011 SLAMS Thermo TEOM 1405DF 182 Low Volume Dichotomous FEM Page 101 of 168 GLENDALE Appendix D Requirements - Network Design Criteria Population Population Site Type Exposure Exposure NAAQS NAAQS Basic Monitoring Objective Comparison Comparison Monitoring Scale (Spatial Scale Represented) Neighborhood Neighborhood Monitoring Season Jan-Dec Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Not Not Distance between collocated samplers Applicable Applicable Not Distance between PM10 and PM2.5 monitors 0 meters Applicable Probe Height (distance above ground level to inlet) 4.4 meters 4.4 meters Airflow Arc 360º 360º Not Probe Sample Line Material FEP Applicable Not Pollutant Sample Residence Time (seconds) 9.16 Applicable Distance from Supporting Structure/Roof Horizontal 0 meters 0 meters (horizontal distance and vertical distance to Vertical 2 meters 2 meters probe/inlet) no no Horizontal Distance from Obstructions on Roof obstructions obstructions (horizontal distance to obstruction and vertical no no height of obstruction above probe/inlet) Vertical obstructions obstructions no no Distance from Obstructions Not on Roof Horizontal obstructions obstructions (horizontal distance to the obstruction and vertical height of obstruction above no no Vertical probe/inlet) obstructions obstructions Distance from Dripline of Closest Tree(s) no tree no tree Population Exposure NAAQS Comparison Neighborhood Jan-Dec Yes Not Applicable 0 meters 4.4 meters 360º Not Applicable Not Applicable 0 meters 2 meters no obstructions no obstructions no obstructions no obstructions no tree No Furnace or No Furnace or No Furnace or Flue Flue Flue Nearest Major Roadway A Olive Ave Olive Ave Olive Ave Distance and Direction to Road 225 meters, S 227 meters, S 227 meters, S Average Daily Traffic Count 25,000 25,000 25,000 Nearest Major Roadway B 59th Ave 59th Ave 59th Ave Distance and Direction to Road 475 meters, E 430 meters, E 430 meters, E Average Daily Traffic Count 30,500 30,500 30,500 Groundcover Pavement Pavement Pavement Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) Distance to Furnace or Flue 2022 Air Monitoring Network Plan June 2022 Page 102 of 168 HIGLEY County ID: HI AQS ID: 04-013-4006 Address: 2207 S Higley Rd., Gilbert Coordinates: 33.30995 N, -111.72003 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant PM10 Parameter Code 81102 Parameter Occurrence Code 1 Collection Frequency Continuous Analysis Method (filter samples only) Not Applicable Any Proposal to Remove or Move Monitor? Yes Does monitor operation meet 40 CFR Part 58, Subpart G – Appendices A, C, D, and E? Yes Is site suitable for comparison to the annual PM2.5 NAAQS as per §58.30? Not Applicable Are Data Comparable to Respective NAAQS? Not Applicable Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 (Gases) Not Applicable Frequency of 1-Point QC (Precision) Checks Number of Flow Rate Verifications Performed in 2021 (PM) 26 Frequency of Flow Rate Verifications Bi-Weekly Number of PE Audits Performed in 2021 4 02/03/21 05/13/21 Dates of PE Audits 08/05/21 11/09/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Date of Annual Data Certification Submission 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 07/01/2000 Monitor Type SLAMS Thermo – TEOM Monitor Make - Model 1405-S Method Code 079 PM Monitor Flow Type Low Volume PM Monitor Collection Type Size Specific Method Type (FRM, FEM, ARM) FEM Appendix D Requirements - Network Design Criteria Site Type Population Exposure Basic Monitoring Objective NAAQS Comparison Monitoring Scale (Spatial Scale Represented) Neighborhood Monitoring Season Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable 2022 Air Monitoring Network Plan June 2022 Page 103 of 168 HIGLEY Probe Height (distance above ground level to inlet) Airflow Arc Probe Sample Line Material Pollutant Sample Residence Time (seconds) 4.4 meters 360º Not Applicable Not Applicable Horizontal 0 meters Distance from Supporting Structure/Roof (horizontal distance and vertical distance to probe/inlet) Vertical 2 meters Horizontal no obstructions Distance from Obstructions on Roof (horizontal distance to obstruction and vertical height of obstruction above probe/inlet) Vertical no obstructions Horizontal 7.6 meters Distance from Obstructions Not on Roof (horizontal distance to the obstruction and vertical height of obstruction above probe/inlet) Vertical 1.5 meters Distance from Dripline of Closest Tree(s) 15.2 meters Distance to Furnace or Flue No Furnace or Flue Nearest Major Roadway A Higley Rd Distance and Direction to Road 117 meters, E Average Daily Traffic Count 11,500 Nearest Major Roadway B Williams Field Rd Distance and Direction to Road 410 meters, S Average Daily Traffic Count 11,500 Groundcover Pavement Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 104 of 168 HUMBOLDT MOUNTAIN County ID: HM AQS ID: 04-013-9508 Address: E State Hwy 562- FAA Radar Station, Tonto National Forest Coordinates: 33.98280 N, -111.79871 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant O3 Parameter Code 44201 Parameter Occurrence Code 1 Collection Frequency Continuous Analysis Method (filter samples only) Not Applicable Any Proposal to Remove or Move Monitor? No Does monitor operation meet 40 CFR Part 58, Subpart G – Appendices A, Yes C, D, and E? Is site suitable for comparison to the annual PM2.5 NAAQS as per §58.30? Not Applicable Are Data Comparable to Respective NAAQS? Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 (Gases) 26 Frequency of 1-Point QC (Precision) Checks Bi-Weekly Number of Flow Rate Verifications Performed in 2021 (PM or Pb) Not Applicable Frequency of Flow Rate Verifications Number of PE Audits Performed in 2021 2 04/15/21 Dates of PE Audits 10/14/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Date of Annual Data Certification Submission 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 08/01/1995 Monitor Type SLAMS Monitor Make – Model Teledyne API – 400T Method Code 087 Method Type (FRM, FEM, ARM) FEM Appendix D Requirements - Network Design Criteria Site Type Maximum O3 Concentration Basic Monitoring Objective NAAQS Comparison Monitoring Scale (Spatial Scale Represented) Regional Monitoring Season Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable Probe Height (distance above ground level to inlet) 4 meters Airflow Arc 360º 2022 Air Monitoring Network Plan June 2022 Page 105 of 168 HUMBOLDT MOUNTAIN Probe Sample Line Material FEP Pollutant Sample Residence Time (seconds) 8.96 Horizontal 0 meters Distance from Supporting Structure/Roof (horizontal distance and vertical distance to probe/inlet) Vertical 2 meters Distance from Obstructions on Roof (horizontal distance Horizontal no obstruction to obstruction and vertical height of obstruction above Vertical no obstruction probe/inlet) Distance from Obstructions Not on Roof (horizontal Horizontal no obstruction distance to the obstruction and vertical height of Vertical no obstruction obstruction above probe/inlet) Distance from Dripline of Closest Tree(s) no tree Distance to Furnace or Flue No Furnace or Flue Nearest Major Roadway - Remote Mountaintop - Access using E. State No Major Roadway Hwy 562 Distance and Direction to Road Not Applicable Average Daily Traffic Count Not Applicable Groundcover Soil / Vegetation Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 106 of 168 MESA County ID: ME AQS ID: 04-013-1003 Address: 310 S Brooks, Mesa Coordinates: 33.41018 N, -111.86536 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant CO O3 PM10 PM2.5 Parameter Code 42101 44201 81102 88101 Parameter Occurrence Code 1 1 1 3 Collection Frequency Continuous Continuous Continuous Continuous Analysis Method (filter samples Not Applicable Not Applicable Not Applicable Not Applicable only) Any Proposal to Remove or No No No No Move Monitor? Does monitor operation meet 40 CFR Part 58, Subpart G – Yes Yes Yes Yes Appendices A, C, D, and E? Is site suitable for comparison to the annual PM2.5 NAAQS as Not Applicable Not Applicable Not Applicable Yes per §58.30? Are Data Comparable to Yes Yes Yes Yes Respective NAAQS? Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed 26 26 Not Applicable Not Applicable in 2021 (Gases) Frequency of 1-Point QC Bi-Weekly Bi-Weekly (Precision) Checks Number of Flow Rate Verifications Performed in Not Applicable Not Applicable 26 26 2021 (PM) Frequency of Flow Rate Bi-Weekly Bi-Weekly Verifications Number of PE Audits 4 2 4 4 Performed in 2021 Dates of PE Audits Annual Precision & PE Audit Reports Submitted to AQS? Date of Annual Data Certification Submission 2022 Air Monitoring Network Plan 01/29/21 06/11/21 07/08/21 08/06/21 04/22/21 10/01/21 02/03/21 05/14/21 08/06/21 11/10/21 02/03/21 05/14/21 08/06/21 11/10/21 Yes Yes Yes Yes 04/22/22 04/22/22 04/22/22 04/22/22 June 2022 Page 107 of 168 MESA Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology 01/01/1978 11/1/2012 11/1/2012 11/1/2012 SLAMS SLAMS SLAMS SLAMS Teledyne API – Teledyne API – Thermo - TEOM Thermo - TEOM Monitor Make - Model 300T 400T 1405-DF 1405-DF Method Code 093 087 208 182 PM Monitor Flow Type Not Applicable Not Applicable Low Volume Low Volume PM Monitor Collection Type Not Applicable Not Applicable Dichotomous Dichotomous Method Type (FRM, FEM, FRM FEM FEM FEM ARM) Appendix D Requirements - Network Design Criteria Population Population Population Population Site Type Exposure Exposure Exposure Exposure NAAQS NAAQS NAAQS NAAQS Basic Monitoring Objective Comparison Comparison Comparison Comparison Monitoring Scale (Spatial Scale Neighborhood Neighborhood Neighborhood Neighborhood Represented) Monitoring Season Sep-Mar Jan-Dec Jan-Dec Jan-Dec Network Meets Minimum Number of Monitors Yes Yes Yes Yes Required? Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated Not Applicable Not Applicable Not Applicable Not Applicable samplers Distance between PM10 and Not Applicable Not Applicable 0 meters 0 meters PM2.5 monitors Probe Height (distance above 4.4 meters 4.4 meters 4.4 meters 4.4 meters ground level to inlet) Airflow Arc 360º 360º 360º 360º Probe Sample Line Material FEP FEP Not Applicable Not Applicable Pollutant Sample Residence 8.12 8.12 Not Applicable Not Applicable Time (seconds) Distance from Horizontal 0 meters 0 meters 0 meters 0 meters Supporting Structure/Roof (horizontal Vertical 2 meters 2 meters 2 meters 2 meters distance and vertical distance to probe/inlet) Date Sampling Started Monitor Type Horizontal no obstruction 2022 Air Monitoring Network Plan no obstruction June 2022 no obstruction no obstruction Page 108 of 168 Distance from Obstructions on Roof (horizontal distance to Vertical obstruction and vertical height of obstruction above probe/inlet) Distance from Horizontal Obstructions Not on Roof (horizontal distance to the obstruction and Vertical vertical height of obstruction above probe/inlet) Distance from Dripline of Closest Tree(s) Distance to Furnace or Flue MESA no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no tree no tree no tree no tree No Furnace or Flue Broadway Rd. No Furnace or Flue Broadway Rd. No Furnace or Flue Broadway Rd. No Furnace or Flue Broadway Rd. Nearest Major Roadway Distance and Direction to 305 meters, S 305 meters, S 305 meters, S 305 meters, S Road Average Daily Traffic Count 33,000 33,000 33,000 33,000 Groundcover Pavement/Gravel Pavement/Gravel Pavement/Gravel Pavement/Gravel Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 109 of 168 NORTH PHOENIX County ID: NP AQS ID: 04-013-1004 Address: 601 E Butler Dr., Phoenix Coordinates: 33.56034 N, -112.06627 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant O3 PM10 PM2.5 Parameter Code 44201 81102 88101 Parameter Occurrence Code 1 1 3 Collection Frequency Continuous Continuous Continuous Not Not Not Analysis Method (filter samples only) Applicable Applicable Applicable Any Proposal to Remove or Move Monitor? No No No Does monitor operation meet 40 CFR Part 58, Subpart G – Yes Yes Yes Appendices A, C, D, and E? Is site suitable for comparison to the annual PM2.5 NAAQS as Not Not Yes per §58.30? Applicable Applicable Are Data Comparable to Respective NAAQS? Yes Yes Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 26 Not Not 2021 (Gases) Applicable Applicable Frequency of 1-Point QC (Precision) Checks Bi-Weekly Not Number of Flow Rate Verifications Performed in 2021 (PM) 27 27 Applicable Frequency of Flow Rate Verifications Bi-Weekly Bi-Weekly Number of PE Audits Performed in 2021 2 3 3 02/23/21 02/23/21 06/08/21 Dates of PE Audits 08/03/21 08/03/21 12/07/21 11/10/21 11/10/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Yes Yes Date of Annual Data Certification Submission 04/22/22 04/22/22 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 01/01/1975 9/1/2011 Monitor Type SLAMS SLAMS Thermo Teledyne API Monitor Make - Model TEOM 1405– 400T DF Method Code 087 208 Not PM Monitor Flow Type Low Volume Applicable Not PM Monitor Collection Type Dichotomous Applicable 2022 Air Monitoring Network Plan June 2022 9/1/2011 SLAMS Thermo TEOM 1405DF 182 Low Volume Dichotomous Page 110 of 168 NORTH PHOENIX Method Type (FRM, FEM, ARM) FEM FEM FEM Appendix D Requirements - Network Design Criteria Max Ozone Population Population Site Type Concentration Exposure Exposure NAAQS NAAQS NAAQS Basic Monitoring Objective Comparison Comparison Comparison Monitoring Scale (Spatial Scale Represented) Neighborhood Neighborhood Neighborhood Monitoring Season Jan-Dec Jan-Dec Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Yes Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Not Not Distance between collocated samplers Applicable Applicable Not Distance between PM10 and PM2.5 monitors 0 meters Applicable Probe Height (distance above ground level to inlet) 4.6 meters 4.5 meters Airflow Arc 360º 360º Not Probe Sample Line Material FEP Applicable Pollutant Sample Residence Time (seconds) Not Applicable 0 meters 4.5 meters 360º Not Applicable 6.02 Not Applicable Not Applicable Distance from Supporting Structure/Roof (horizontal distance and vertical distance to probe/inlet) Horizontal 0 meters 0 meters 0 meters Vertical 2 meters 2 meters 2 meters Distance from Obstructions on Roof (horizontal distance to obstruction and vertical height of obstruction above probe/inlet) Horizontal no obstruction no obstruction no obstruction Vertical no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction no obstruction Distance from Obstructions Not on Roof Horizontal (horizontal distance to the obstruction and vertical height of obstruction above Vertical probe/inlet) Distance from Dripline of Closest Tree(s) 3 meters 3 meters 3 meters No Furnace or No Furnace or No Furnace or Distance to Furnace or Flue Flue Flue Flue th th th Nearest Major Roadway 7 Street 7 Street 7 Street Distance and Direction to Road 75 meters, E 75 meters, E 75 meters, E Average Daily Traffic Count (ADT) 32,000 32,000 32,000 Groundcover Gravel Gravel Gravel Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 111 of 168 PINNACLE PEAK County ID: PP AQS ID: 04-013-2005 Address: 24295 N Alma School Rd., Scottsdale Coordinates: 33.70639 N, -111.85575 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant O3 Parameter Code 44201 Parameter Occurrence Code 1 Collection Frequency Continuous Analysis Method (filter samples only) Not Applicable Any Proposal to Remove or Move Monitor? No Does monitor operation meet 40 CFR Part 58, Subpart G – Appendices A, C, D, Yes and E? Is site suitable for comparison to the annual PM2.5 NAAQS as per §58.30? Not Applicable Are Data Comparable to Respective NAAQS? Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 (Gases) 25 Frequency of 1-Point QC (Precision) Checks Bi-Weekly Number of Flow Rate Verifications Performed in 2021 (PM or Pb) Not Applicable Frequency of Flow Rate Verifications Number of PE Audits Performed in 2021 2 03/12/21 Dates of PE Audits 07/09/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Date of Annual Data Certification Submission 4/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 02/01/1988 Monitor Type SLAMS Monitor Make - Model Teledyne API – 400T Method Code 087 Method Type (FRM, FEM, ARM) FEM Appendix D Requirements - Network Design Criteria Site Type Max Ozone Concentration Basic Monitoring Objective NAAQS Comparison Monitoring Scale (Spatial Scale Represented) Urban Monitoring Season Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable Probe Height (distance above ground level to inlet) 4.7 meters Airflow Arc 360º Probe Sample Line Material FEP 2022 Air Monitoring Network Plan June 2022 Page 112 of 168 PINNACLE PEAK Pollutant Sample Residence Time (seconds) Distance from Supporting Structure/Roof (horizontal distance and vertical distance to probe/inlet) Horizontal 5.34 0 meters Vertical 2.7 meters Distance from Obstructions on Roof (horizontal distance to Horizontal no obstruction obstruction and vertical height of obstruction above Vertical no obstruction probe/inlet) Distance from Obstructions Not on Roof (horizontal distance no obstruction Horizontal to the obstruction and vertical height of obstruction above no obstruction Vertical probe/inlet) Distance from Dripline of Closest Tree(s) 10 meters Distance to Furnace or Flue No Furnace or Flue Nearest Major Roadway Happy Valley Rd. Distance and Direction to Road 61 meters, S Average Daily Traffic Count 16,000 Groundcover Pavement / Grass Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 113 of 168 SOUTH PHOENIX County ID: SP AQS ID: 04-013-4003 Address: 33 W Tamarisk St., Phoenix Coordinates: 33.40314 N, -112.07526 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant CO O3 PM10 PM2.5 Parameter Code 42101 44201 81102 88101 Parameter Occurrence Code 1 1 1 3 Collection Frequency Continuous Continuous Continuous Continuous Not Not Not Not Analysis Method (filter samples only) Applicable Applicable Applicable Applicable Any Proposal to Remove or Move No No No No Monitor? Does monitor operation meet 40 CFR Part Yes Yes Yes Yes 58, Subpart G – Appendices A, C, D, and E? Is site suitable for comparison to the annual Not Not Not Yes PM2.5 NAAQS as per §58.30? Applicable Applicable Applicable Are Data Comparable to Respective Yes Yes Yes Yes NAAQS? Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks 26 26 Performed in 2021 (Gases) Not Not Applicable Applicable Frequency of 1-Point QC (Precision) Bi-Weekly Bi-Weekly Checks Number of Flow Rate Verifications 26 26 Not Not Performed in 2021 (PM) Applicable Applicable Frequency of Flow Rate Verifications Bi-Weekly Bi-Weekly Number of PE Audits Performed in 2021 2 2 4 4 02/23/21 02/23/21 05/04/21 05/04/21 04/06/21 04/20/21 Dates of PE Audits 08/10/21 08/10/21 11/02/21 11/02/21 11/02/21 11/02/21 Annual Precision & PE Audit Reports Yes Yes Yes Yes Submitted to AQS? Date of Annual Data Certification 04/22/22 04/22/22 04/22/22 04/22/22 Submission Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 10/01/1999 10/01/1999 7/1/2007 Monitor Type SLAMS SLAMS SLAMS Thermo Teledyne API Teledyne API Monitor Make - Model TEOM 1405– 300T – 400T DF 2022 Air Monitoring Network Plan June 2022 05/01/2010 SLAMS Thermo TEOM 1405DF Page 114 of 168 SOUTH PHOENIX Method Code 093 087 208 182 Not Not PM Monitor Flow Type Low Volume Low Volume Applicable Applicable Not Not PM Monitor Collection Type Dichotomous Dichotomous Applicable Applicable Method Type (FRM, FEM, ARM) FRM FEM FEM FEM Appendix D Requirements - Network Design Criteria Population Population Population Population Site Type Exposure Exposure Exposure Exposure NAAQS NAAQS NAAQS NAAQS Basic Monitoring Objective Comparison Comparison Comparison Comparison Monitoring Scale (Spatial Scale Neighborhood Neighborhood Neighborhood Neighborhood Represented) Monitoring Season Jan-Dec Jan-Dec Jan-Dec Jan-Dec Network Meets Minimum Number of Yes Yes Yes Yes Monitors Required? Appendix E Requirements - Probe and Monitoring Path Siting Criteria Not Not Not Not Distance between collocated samplers Applicable Applicable Applicable Applicable Not Not Distance between PM10 and PM2.5 monitors 0 meters 0 meters Applicable Applicable Probe Height (distance above ground level 4.4 meters 4.4 meters 4.3 meters 4.3 meters to inlet) Airflow Arc 360º 360º 360º 360º Probe Sample Line Material FEP FEP Not Applicable Not Applicable Pollutant Sample Residence Time (seconds) 5.29 5.29 Not Applicable Not Applicable Horizontal 0 meters 0 meters 0 meters 0 meters Vertical 2 meters 2 meters 2 meters 2 meters Horizontal no obstruction no obstruction no obstruction no obstruction Vertical no obstruction no obstruction no obstruction no obstruction Horizontal 11 meters 11 meters 11 meters 11 meters Vertical 3 meters 3 meters 3 meters 3 meters Distance from Dripline of Closest Tree(s) 11 meters 11 meters 11 meters 11 meters 2022 Air Monitoring Network Plan June 2022 Distance from Supporting Structure/Roof (horizontal distance and vertical distance to probe/inlet) Distance from Obstructions on Roof (horizontal distance to obstruction and vertical height of obstruction above probe/inlet) Distance from Obstructions Not on Roof (horizontal distance to the obstruction and vertical height of obstruction above probe/inlet) Page 115 of 168 SOUTH PHOENIX No Furnace or No Furnace or No Furnace or No Furnace or Distance to Furnace or Flue Flue Flue Flue Flue Nearest Major Roadway A Central Ave. Central Ave. Central Ave. Central Ave. Distance and Direction to Road 168 meters, E 168 meters, E 165 meters, E 165 meters, E Average Daily Traffic Count 24,000 24,000 24,000 24,000 Nearest Major Roadway B Broadway Rd. Broadway Rd. Broadway Rd. Broadway Rd. Distance and Direction to Road 385 meters, N 385 meters, N 385 meters, N 385 meters, N Average Daily Traffic Count 18,000 18,000 18,000 18,000 Groundcover Pavement Pavement Pavement Pavement Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 116 of 168 SOUTH SCOTTSDALE County ID: SS AQS ID: 04-013-3003 Address: 2857 N Miller Rd., Scottsdale Coordinates: 33.47968 N, -111.91711 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant O3 PM10 Parameter Code 44201 81102 Parameter Occurrence Code 1 1 Collection Frequency Continuous Continuous Analysis Method (filter samples only) Not Applicable Not Applicable Any Proposal to Remove or Move Monitor? No No Does monitor operation meet 40 CFR Part 58, Subpart G – Appendices Yes Yes A, C, D, and E? Is site suitable for comparison to the annual PM2.5 NAAQS as per Not Applicable Not Applicable §58.30? Are Data Comparable to Respective NAAQS? Yes Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 27 (Gases) Not Applicable Frequency of 1-Point QC (Precision) Checks Bi-Weekly Number of Flow Rate Verifications Performed in 2021 (PM) 27 Not Applicable Frequency of Flow Rate Verifications Bi-Weekly Number of PE Audits Performed in 2021 4 5 02/03/21 01/06/21 02/23/21 01/08/21 Dates of PE Audits 05/10/21 07/09/21 08/04/21 12/08/21 11/23/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Yes Date of Annual Data Certification Submission 04/22/22 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 01/01/1974 Monitor Type SLAMS Teledyne API – Monitor Make - Model 400T Method Code 087 PM Monitor Flow Type Not Applicable PM Monitor Collection Type Not Applicable Method Type (FRM, FEM, ARM) FEM Appendix D Requirements - Network Design Criteria Population Site Type Exposure 2022 Air Monitoring Network Plan June 2022 09/01/2012 SLAMS Thermo - TEOM 1405-S 079 Low Volume Size Specific FEM Population Exposure Page 117 of 168 SOUTH SCOTTSDALE NAAQS NAAQS Comparison Comparison Monitoring Scale (Spatial Scale Represented) Neighborhood Neighborhood Monitoring Season Jan-Dec Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable Not Applicable Probe Height (distance above ground level to inlet) 4.4 meters 3 meters Airflow Arc 360º 360º Probe Sample Line Material FEP Not Applicable Pollutant Sample Residence Time (seconds) 8.43 Not Applicable 0.46 meters 0 meters Distance from Supporting Structure/Roof (horizontal Horizontal distance and vertical distance to probe/inlet) Vertical 2.4 meters 0.46 meters Basic Monitoring Objective Distance from Obstructions on Roof (horizontal distance to obstruction and vertical height of obstruction above probe/inlet) Distance from Obstructions Not on Roof (horizontal distance to the obstruction and vertical height of obstruction above probe/inlet) Distance from Dripline of Closest Tree(s) Horizontal no obstruction no obstruction Vertical no obstruction no obstruction Horizontal 3 meters no obstruction Vertical 2.4 meters no obstruction no tree no tree No Furnace or No Furnace or Distance to Furnace or Flue Flue Flue Nearest Major Roadway A Thomas Rd. Thomas Rd. Distance and Direction to Road 66 meters, N 62 meters, N Average Daily Traffic Count 33,000 33,000 Nearest Major Roadway B Miller Rd. Miller Rd. Distance and Direction to Road 32 meters, W 35 meters, W Average Daily Traffic Count 13,000 13,000 Groundcover Pavement Pavement Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 118 of 168 TEMPE County ID: TE AQS ID: 04-013-4005 Address: 1525 S College Ave., Tempe Coordinates: 33.4123 N, -111.93471 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant O3 PM10 PM2.5 Parameter Code 44201 81102 88101 Parameter Occurrence Code 1 1 3 Collection Frequency Continuous Continuous Continuous Not Not Not Analysis Method (filter samples only) Applicable Applicable Applicable Any Proposal to Remove or Move Monitor? No No No Does monitor operation meet 40 CFR Part 58, Subpart G – Yes Yes Yes Appendices A, C, D, and E? Is site suitable for comparison to the annual PM2.5 NAAQS as Not Not Yes per §58.30? Applicable Applicable Are Data Comparable to Respective NAAQS? Yes Yes Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 27 Not Not (Gases) Applicable Applicable Frequency of 1-Point QC (Precision) Checks Bi-Weekly Number of Flow Rate Verifications Performed in 2021 (PM) 27 27 Not Applicable Frequency of Flow Rate Verifications Bi-Weekly Bi-Weekly Number of PE Audits Performed in 2021 2 4 4 02/23/21 02/23/21 05/05/21 05/05/21 05/05/21 Dates of PE Audits 08/11/21 08/11/21 11/03/21 11/03/21 11/03/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Yes Yes 04/22/22 04/22/22 04/22/22 Date of Annual Data Certification Submission Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 07/01/2000 03/01/2012 Monitor Type SLAMS SLAMS Thermo Teledyne API Monitor Make - Model TEOM 1405– 400T DF Method Code 087 208 Not PM Monitor Flow Type Low Volume Applicable 2022 Air Monitoring Network Plan June 2022 03/01/2012 SLAMS Thermo TEOM 1405DF 182 Low Volume Page 119 of 168 TEMPE Not Dichotomous Applicable Method Type (FRM, FEM, ARM) FEM FEM Appendix D Requirements - Network Design Criteria Population Population Site Type Exposure Exposure NAAQS NAAQS Basic Monitoring Objective Comparison Comparison Neighborhoo Neighborhoo Monitoring Scale (Spatial Scale Represented) d d Monitoring Season Jan-Dec Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Not Not Distance between collocated samplers Applicable Applicable Not Distance between PM10 and PM2.5 monitors 0 meters Applicable Probe Height (distance above ground level to inlet) 4.4 meters 3.1 meters Airflow Arc 360º 360º Not Probe Sample Line Material FEP Applicable Not Pollutant Sample Residence Time (seconds) 5.89 Applicable Horizonta Distance from Supporting Structure/Roof 0.46 meters 0 meters l (horizontal distance and vertical distance to PM Monitor Collection Type probe/inlet) Vertical 2 meters 0.76 meters Horizonta l no obstruction no obstruction no obstruction no obstruction no tree No Furnace or Flue Apache Blvd. no obstruction no obstruction no obstruction no obstruction no tree No Furnace or Flue Apache Blvd. Dichotomous FEM Population Exposure NAAQS Comparison Neighborhoo d Jan-Dec Yes Not Applicable 0 meters 3.1 meters 360º Not Applicable Not Applicable 0 meters 0.76 meters no obstruction no Vertical obstruction Horizonta no Distance from Obstructions Not on Roof l obstruction (horizontal distance to the obstruction and no vertical height of obstruction above probe/inlet) Vertical obstruction Distance from Dripline of Closest Tree(s) no tree No Furnace Distance to Furnace or Flue or Flue Nearest Major Roadway Apache Blvd. 370 meters, Distance and Direction to Road 370 meters, N 370 meters, N N Average Daily Traffic Count 32,170 32,170 32,170 Groundcover Gravel Gravel Gravel Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) Distance from Obstructions on Roof (horizontal distance to obstruction and vertical height of obstruction above probe/inlet) 2022 Air Monitoring Network Plan June 2022 Page 120 of 168 THIRTY-THIRD County ID: TT AQS ID: 04-013-4020 Address: 3248 W Moreland Ave., Phoenix Coordinates: 33.46173 N, -112.12796 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant CO NO2 PM2.5 Parameter Code 42101 42602 88101 Parameter Occurrence Code Collection Frequency 1 Continuous Not Applicable Yes 1 Continuous Not Applicable No 3 Continuous Not Applicable Yes Yes Yes Yes Not Applicable Yes Not Applicable Yes Not Applicable Yes Analysis Method (filter samples only) Any Proposal to Remove or Move Monitor? Does monitor operation meet 40 CFR Part 58, Subpart G – Appendices A, C, D, and E? Is site suitable for comparison to the annual PM2.5 NAAQS as per §58.30? Are Data Comparable to Respective NAAQS? Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 4* 26 Not (Gases) Applicable Frequency of 1-Point QC (Precision) Checks Bi-Weekly Bi-Weekly Number of Flow Rate Verifications in 2021 (PM) 4* Not Not Applicable Applicable Frequency of Flow Rate Verifications Bi-Weekly Number of PE Audits Performed in 2021 0* 3 1* 01/12/21 * Sampling 02/24/21 *Sampling Dates of PE Audits discontinued 05/05/21 discontinued 2/28/21 11/04/21 2/28/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Yes Yes Date of Annual Data Certification Submission 04/22/22 04/22/22 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 01/01/2020 09/01/2015 01/01/2020 Monitor Type SLAMS SLAMS SLAMS Thermo Teledyne API Monitor Make – Model Thermo 42iQ TEOM 1405– 300T DF Method Code 093 074 182 Method Type (FRM, FEM, ARM) FEM FRM FEM Appendix D Requirements - Network Design Criteria SourceSourceSite Type Oriented Oriented NAAQS NAAQS Basic Monitoring Objective Comparison Comparison Monitoring Scale (Spatial Scale Represented) Micro Micro Monitoring Season Jan-Dec Jan-Dec 2022 Air Monitoring Network Plan June 2022 SourceOriented NAAQS Comparison Micro Jan-Dec Page 121 of 168 THIRTY-THIRD Network Meets Minimum Number of Monitors Required? Yes Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Not Not Distance between collocated samplers Applicable Applicable Probe Height (distance above ground level to inlet) 7 meters 7 meters Airflow Arc 360º 360º Probe Sample Line Material FEP FEP Yes Pollutant Sample Residence Time (seconds) 15.08 15.08 Distance from Supporting 3 meters Structure/Roof (horizontal distance 0 meters and vertical distance to probe/inlet) Distance from Obstructions on Roof no obstruction (horizontal distance to obstruction and vertical height of obstruction above no obstruction probe/inlet) Distance from Obstructions Not on no obstruction Roof (horizontal distance to the obstruction and vertical height of no obstruction obstruction above probe/inlet) Distance from Dripline of Closest Tree(s) 3 meters 3 meters Not Applicable 7 meters 360º FEP Not applicable 3 meters 0 meters 0 meters 0 meters no no obstruction obstruction no no obstruction obstruction no no obstruction obstruction no no obstruction obstruction 15.2 meters 15.2 meters No Furnace No Furnace Distance to Furnace or Flue or Flue or Flue I-10 Nearest Major Roadway 13.5 meters, N Distance and Direction to Road 245,632 Average Daily Traffic Count Gravel Groundcover Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 no obstruction no obstruction no obstruction no obstruction 15.2 meters No Furnace or Flue Page 122 of 168 WEST 43RD AVENUE County ID: WF AQS ID: 04-013-4009 Address: 3940 W Broadway Rd., Phoenix Coordinates: 33.40635 N, -112.14426 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant PM10 Parameter Code 81102 Parameter Occurrence Code 1 Collection Frequency Continuous Analysis Method (filter samples only) Not Applicable Any Proposal to Remove or Move Monitor? No Does monitor operation meet 40 CFR Part 58, Subpart G – Appendices A, C, D, Yes and E? Is site suitable for comparison to the annual PM2.5 NAAQS as per §58.30? Not Applicable Are Data Comparable to Respective NAAQS? Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 (Gases) Not Applicable Frequency of 1-Point QC (Precision) Checks Number of Flow Rate Verifications Performed in 2021 (PM) 26 Frequency of Flow Rate Verifications Bi-Weekly Number of PE Audits Performed in 2021 6 02/03/21 03/02/21 04/13/21 Dates of PE Audits 06/08/21 09/14/21 12/20/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Date of Annual Data Certification Submission 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 04/01/2002 Monitor Type SLAMS Monitor Make – Model Thermo - TEOM 1405-S Method Code 079 PM Monitor Flow Type Low Volume PM Monitor Collection Type Size Specific Method Type (FRM, FEM, ARM) FEM Appendix D Requirements - Network Design Criteria Site Type Highest Concentration Basic Monitoring Objective NAAQS Comparison Monitoring Scale (Spatial Scale Represented) Middle Monitoring Season Jan-Dec Network Meets Minimum Number of Monitors Required? Yes 2022 Air Monitoring Network Plan June 2022 Page 123 of 168 WEST 43RD AVENUE Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable Probe Height (distance above ground level to inlet) 5 meters Airflow Arc 360º Probe Sample Line Material Not Applicable Pollutant Sample Residence Time (seconds) Not Applicable Horizontal 0 meters Distance from Supporting Structure/Roof (horizontal distance and vertical distance to probe/inlet) Vertical 0.6 meters Distance from Obstructions on Roof (horizontal distance to obstruction and vertical height of obstruction above probe/inlet) Horizontal no obstruction Vertical no obstruction Distance from Obstructions Not on Roof (horizontal distance to Horizontal no obstruction the obstruction and vertical height of obstruction above Vertical no obstruction probe/inlet) Distance from Dripline of Closest Tree(s) 4.5 meters Distance to Furnace or Flue No Furnace or Flue Nearest Major Roadway A Broadway Rd. (E of 35th Ave.) Distance and Direction to Road 37 meters, S Average Daily Traffic Count 12,501 th Nearest Major Roadway B 35 Ave. (N. of Broadway Rd.) Distance and Direction to Road 1 kilometer, E Average Daily Traffic Count 19,699 Groundcover Gravel Sources: For QC, flow rate, and collocation assessment information - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audit dates - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 124 of 168 WEST CHANDLER County ID: WC AQS ID: 04-013-4004 Address: 275 S Ellis, Chandler Coordinates: 33.29896 N, -111.88426 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant CO O3 PM10 Parameter Code 42101 44201 81102 Parameter Occurrence Code 1 1 1 Collection Frequency Continuous Continuous Continuous Not Not Not Analysis Method (filter samples only) Applicable Applicable Applicable Any Proposal to Remove or Move Monitor? No No No Does monitor operation meet 40 CFR Part 58, Subpart G – Yes Yes Yes Appendices A, C, D, and E? Is site suitable for comparison to the annual PM2.5 NAAQS Not Not Not as per §58.30? Applicable Applicable Applicable Are Data Comparable to Respective NAAQS? Yes Yes Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 26 26 Not 2021 (Gases) Applicable Frequency of 1-Point QC (Precision) Checks Bi-Weekly Bi-Weekly Number of Flow Rate Verifications Performed in 2021 (PM) 26 Not Not Applicable Applicable Frequency of Flow Rate Verifications Bi-Weekly Number of PE Audits Performed in 2021 2 2 03/11/21 03/11/21 04/08/21 06/03/21 Dates of PE Audits 09/09/21 10/06/21 09/09/21 12/01/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Yes Yes 04/22/22 04/22/22 04/22/22 Date of Annual Data Certification Submission Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 07/01/2000 07/01/2000 Monitor Type SLAMS SLAMS Monitor Make - Model Method Code PM Monitor Flow Type 2022 Air Monitoring Network Plan June 2022 Teledyne API – 300T Teledyne API – 400T 093 Not Applicable 087 Not Applicable 07/01/2000 SLAMS Thermo – TEOM 1405S 079 Low Volume Page 125 of 168 WEST CHANDLER PM Monitor Collection Type Not Applicable Not Applicable Size Specific Method Type (FRM, FEM, ARM) FRM FEM FEM Appendix D Requirements - Network Design Criteria Population Population Population Site Type Exposure Exposure Exposure NAAQS NAAQS NAAQS Basic Monitoring Objective Comparison Comparison Comparison Monitoring Scale (Spatial Scale Represented) Neighborhood Neighborhood Neighborhood Monitoring Season Jan-Dec Jan-Dec Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Yes Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Not Not Not Distance between collocated samplers Applicable Applicable Applicable Probe Height (distance above ground level to inlet) 4.4 meters 4.4 meters 4.4 meters Airflow Arc 360º 360º 360º Not Probe Sample Line Material FEP FEP Applicable Not Pollutant Sample Residence Time (seconds) 4.24 4.24 Applicable Distance from Supporting Structure/Roof Horizontal 0 meters 0 meters 0 meters (horizontal distance and vertical distance Vertical 2 meters 2 meters 2 meters to probe/inlet) Distance from Obstructions on Roof Horizontal no obstruction no obstruction no obstruction (horizontal distance to obstruction and vertical height of obstruction above Vertical no obstruction no obstruction no obstruction probe/inlet) Distance from Obstructions Not on Roof Horizontal 14 meters 14 meters 14 meters (horizontal distance to the obstruction and vertical height of obstruction above Vertical 3 meters 3 meters 3 meters probe/inlet) Distance from Dripline of Closest Tree(s) 14 meters 14 meters 14 meters No Furnace or No Furnace or No Furnace or Distance to Furnace or Flue Flue Flue Flue Nearest Major Roadway A Frye Rd. Frye Rd. Frye Rd. Distance and Direction to Road 30 meters, S 30 meters, S 30 meters, S Average Daily Traffic Count 10,566 10,566 10,566 Pavement / Pavement / Pavement / Groundcover Gravel Gravel Gravel Sources: For 1-pt. precision checks, FR verifications, and collocation assessments - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audits - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 126 of 168 WEST PHOENIX County ID: WP AQS ID: 04-013-0019 Address: 3847 W Earll, Phoenix Coordinates: 33.48378 N, -112.14256 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant CO NO2 O3 PM10 PM2.5 Primary PM2.5 Secondary Parameter Code 42101 42602 44201 81102 88101 88101 Parameter Occurrence Code 1 1 1 1 3 2 Collection Frequency Continuous Continuous Continuous Continuous Continuous 1 in 12 days Analysis Method (filter samples only) Not Applicable Not Applicable Not Applicable Not Applicable Not Applicable Analytical Laboratory (filter samples only) Not Applicable Not Applicable Not Applicable Not Applicable Not Applicable Any Proposal to Remove or Move Monitor? No No No No No No Does monitor operation meet 40 CFR Part 58, Subpart G – Appendices A, C, D, and E? Yes Yes Yes Yes Yes Yes Is site suitable for comparison to the annual PM2.5 NAAQS as per §58.30? Not Applicable Not Applicable Not Applicable Not Applicable Yes Yes Are Data Comparable to Respective NAAQS? Yes Yes Yes Yes Yes Yes 2022 Air Monitoring Network Plan June 2022 Page 127 of 168 As per 40 CFR Part 50, Appendix L Pace Analytical® IML Air Science Laboratory WEST PHOENIX Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 (Gases) 26 27 27 Not Applicable Frequency of 1-Point QC (Precision) Checks Bi-Weekly Bi-Weekly Bi-Weekly Number of Flow Rate Verifications Performed in 2021 (PM) Not Applicable Not Applicable Not Applicable Number of Required Collocated Assessments in 2021 (PM2.5 Only) Number of Valid Collocation Assessments in 2021 (PM2.5 Only) Number of Collocation Assessments in 2021 (PM2.5 Only) Number of PE Audits Performed in 2021 Not Applicable Not Applicable Not Applicable 2 Not Applicable Not Applicable Not Applicable 2 Not Applicable Not Applicable Not Applicable 2 Dates of PE Audits 06/09/21 12/08/21 02/02/21 09/01/21 04/01/21 07/02/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Yes Date of Annual Data Certification Submission 04/22/22 04/22/22 Frequency of Flow Rate Verifications Not Applicable Not Applicable 25 25 9 Bi-Weekly Bi-Weekly Bi-weekly Yes Not Applicable Not Applicable Not Applicable 4 03/03/21 06/09/21 09/01/21 12/08/21 Yes 4 03/03/21 06/09/21 09/01/21 12/08/21 Yes 4 03/08/21 06/01/21 09/07/21 12/15/21 Yes 04/22/22 04/22/22 04/22/22 04/22/22 30 29 32 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 01/01/1984 05/24/1990 01/01/1984 02/01/1988 Monitor Type SLAMS SLAMS SLAMS Monitor Make - Model Teledyne API 300T SLAMS Thermo 42iQ/Teledy ne - API 200T 09/01/200 5 SLAMS Teledyne API 400T Thermo TEOM 1405DF Thermo TEOM 1405-DF Notes: The same monitor collects PM 10 and PM 2.5 hourly (continuous) measurements. The collocated Partisol 2025i sampler collects a QA filter sample once every 12 days. 2022 Air Monitoring Network Plan June 2022 Page 128 of 168 06/13/2000 SLAMS Thermo Partisol 2025 Method Code PM Monitor Flow Type PM Monitor Collection Type Method Type (FRM, FEM, ARM) WEST PHOENIX 093 099 087 Not Not Not Applicable Applicable Applicable Not Not Not Applicable Applicable Applicable FRM FRM FEM Appendix D Requirements - Network Design Criteria 208 Low Volume Dichotomous FEM 182 Low Volume Dichotomo us FEM 145 Low Volume Size Specific & Sequential FRM Site Type Population Exposure Population Exposure Population Exposure Population Exposure Basic Monitoring Objective NAAQS Comparison NAAQS Comparison NAAQS Comparison NAAQS Comparison Monitoring Scale (Spatial Scale Represented) Neighborho od Neighborho od Neighborhood Neighborhoo d Highest Concentrati on NAAQS Compariso n Neighborh ood Monitoring Season Jan-Dec Jan-Dec Jan-Dec Jan-Dec Jan-Dec Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Yes Yes Yes Yes Yes 2 meters 2 meters 2 meters 0 meters 0 meters 2 meters 5 meters 360º Not Applicable Not Applicable Not Applicable 5 meters 360º Not Applicable Not Applicable Not Applicable 4 meters 360º Appendix E Requirements - Probe and Monitoring Path Siting Criteria Not Not Not Distance between collocated PM2.5 monitors Applicable Applicable Applicable Not Not Not Distance between PM10 and PM2.5 monitors Applicable Applicable Applicable Probe Height (distance above ground level to inlet) 4.3 meters 4.3 meters 4.3 meters Airflow Arc 360º 360º 360º Probe Sample Line Material FEP FEP FEP Pollutant Sample Residence Time (seconds) 8.67 8.67 8.67 Filter Sample Material Not Applicable Not Applicable Not Applicable 2022 Air Monitoring Network Plan June 2022 Page 129 of 168 Highest Concentration NAAQS Comparison Neighborhood FEP Not Applicable FEP WEST PHOENIX Distance from Supporting Structure/Roof (horizontal distance and vertical distance to probe/inlet) Horizontal 0 meters 0 meters 0 meters 0 meters 0 meters 0 meters Vertical Distance from Obstructions Not on Roof (horizontal distance to the obstruction and vertical height of obstruction above probe/inlet) Horizontal no tree No Furnace or Flue 0.6 meters no obstruction no obstruction no obstruction no obstruction no tree No Furnace or Flue Thomas Rd. Thomas Rd. Thomas Rd. Thomas Rd. 0.6 meters no obstruction no obstruction no obstruction no obstruction no tree No Furnace or Flue Thomas Rd. 360 meters, S 29,000 Gravel 0.5 meters Horizontal 2 meters no obstruction no obstruction no obstruction no obstruction no tree No Furnace or Flue 2 meters Distance from Obstructions on Roof (horizontal distance to obstruction and vertical height of obstruction above probe/inlet) 2 meters no obstruction no obstruction no obstruction no obstruction no tree No Furnace or Flue Vertical Vertical Distance from Dripline of Closest Tree(s) Distance to Furnace or Flue Nearest Major Roadway no obstruction no obstruction no obstruction no obstruction 360 meters, 360 meters, 360 meters, S 360 meters, S S S Average Daily Traffic Count 29,000 29,000 29,000 29,000 Groundcover Gravel Gravel Gravel Gravel Sources: For 1-pt. precision checks, FR verifications, and collocation assessments - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audits - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) Distance and Direction to Road 2022 Air Monitoring Network Plan June 2022 Page 130 of 168 no obstruction no obstruction no obstruction no obstruction no tree No Furnace or Flue Thomas Rd. 360 meters, S 29,000 Gravel ZUNI HILLS County ID: ZH AQS ID: 04-013-4016 Address: 10851 W Williams Rd., Sun City Coordinates: 33.68719 N, -112.29416 W Metropolitan Statistical Area (MSA): 6200 Phoenix-Mesa General Information Pollutant PM10 Parameter Code 81102 Parameter Occurrence Code 1 Collection Frequency Continuous Analysis Method (filter samples only) Not Applicable Any Proposal to Remove or Move Monitor? No Does monitor operation meet 40 CFR Part 58, Subpart G – Appendices A, C, D, and Yes E? Is site suitable for comparison to the annual PM2.5 NAAQS as per §58.30? Not Applicable Are Data Comparable to Respective NAAQS? Yes Appendix A Requirements - Quality Assurance Requirements for SLAMS and SPMs Number of 1-Point QC (Precision) Checks Performed in 2021 (Gases) Not Applicable Frequency of 1-Point QC (Precision) Checks Number of Flow Rate Verifications Performed in 2021 (PM) 26 Frequency of Flow Rate Verifications Bi-Weekly Number of PE Audits Performed in 2021 4 03/08/21 06/01/21 Dates of PE Audits 09/07/21 12/15/21 Annual Precision & PE Audit Reports Submitted to AQS? Yes Date of Annual Data Certification Submission 04/22/22 Appendix B Requirements - PSD Monitoring - Not Applicable Appendix C Requirements - Monitoring Methodology Date Sampling Started 12/01/2009 Monitor Type SLAMS Monitor Make – Model Thermo - TEOM 1405-S Method Code 079 PM Monitor Flow Type Low Volume PM Monitor Collection Type Size Specific Method Type (FRM, FEM, ARM) FEM Appendix D Requirements - Network Design Criteria Site Type Population Exposure Basic Monitoring Objective NAAQS Comparison Monitoring Scale (Spatial Scale Represented) Neighborhood Monitoring Season Jan-Dec Network Meets Minimum Number of Monitors Required? Yes Appendix E Requirements - Probe and Monitoring Path Siting Criteria Distance between collocated samplers Not Applicable 2022 Air Monitoring Network Plan June 2022 Page 131 of 168 ZUNI HILLS Probe Height (distance above ground level to inlet) Airflow Arc Probe Sample Line Material Pollutant Sample Residence Time (seconds) Distance from Supporting Structure/Roof (horizontal distance and vertical distance to probe/inlet) Horizontal Vertical Horizontal Vertical Horizontal 3.3 meters 360º Not Applicable Not Applicable 0 meters 1 meter no obstructions no obstructions 6 meters Distance from Obstructions on Roof (horizontal distance to obstruction and vertical height of obstruction above probe/inlet) Distance from Obstructions Not on Roof (horizontal distance to the obstruction and vertical height of obstruction above Vertical 3 meters probe/inlet) Distance from Dripline of Closest Tree(s) 9 meters Distance to Furnace or Flue No Furnace or Flue Nearest Major Roadway Williams Rd. Distance and Direction to Road 200 meters, N Average Daily Traffic Count 2,567 Groundcover Lawn / Soil Sources: For 1-pt. precision checks, FR verifications, and collocation assessments - EPA AQS database - 2021 QA DQI Report (AMP256) For PE audits - EPA AQS database - 2021 QA Raw Assessment Report (AMP251) 2022 Air Monitoring Network Plan June 2022 Page 132 of 168 APPENDIX III - 2021 DATA CERTIFICATION DOCUMENTATION 2022 Air Monitoring Network Plan June 2022 Page 133 of 168 MCAQD Data Certification 2022 Air Monitoring Network Plan June 2022 Page 134 of 168 2022 Air Monitoring Network Plan June 2022 Page 135 of 168 2022 Air Monitoring Network Plan June 2022 Page 136 of 168 2022 Air Monitoring Network Plan June 2022 Page 137 of 168 2022 Air Monitoring Network Plan June 2022 Page 138 of 168 2022 Air Monitoring Network Plan June 2022 Page 139 of 168 2022 Air Monitoring Network Plan June 2022 Page 140 of 168 2022 Air Monitoring Network Plan June 2022 Page 141 of 168 2022 Air Monitoring Network Plan June 2022 Page 142 of 168 EPA Data Certification Concurrence 2022 Air Monitoring Network Plan June 2022 Page 143 of 168 2022 Air Monitoring Network Plan June 2022 Page 144 of 168 2022 Air Monitoring Network Plan June 2022 Page 145 of 168 2022 Air Monitoring Network Plan June 2022 Page 146 of 168 2022 Air Monitoring Network Plan June 2022 Page 147 of 168 2022 Air Monitoring Network Plan June 2022 Page 148 of 168 2022 Air Monitoring Network Plan June 2022 Page 149 of 168 2022 Air Monitoring Network Plan June 2022 Page 150 of 168 2022 Air Monitoring Network Plan June 2022 Page 151 of 168 2022 Air Monitoring Network Plan June 2022 Page 152 of 168 Error! Reference source not found.2021 Data Certification Acceptance Correspondence 2022 Air Monitoring Network Plan June 2022 Page 153 of 168 APPENDIX IV - EPA CORRESPONDENCE 2022 Air Monitoring Network Plan June 2022 Page 154 of 168 APPENDIX V - ARIZONA INTERAGENCY CORRESPONDENCE 2022 Air Monitoring Network Plan June 2022 Page 155 of 168 APPENDIX VI - PUBLIC NOTICE AND COMMENT INFORMATION 2022 Air Monitoring Network Plan June 2022 Page 156 of 168 Figure 18 shows the public comment period announcement, which appeared in The Record Reporter on May 18th and May 25th, 2022. The public comment period was from May 18th, 2022, to June 17th, 2022. Additionally, the public notice was posted on the Maricopa County Air Quality Department website at Maricopa.gov/1624/Public-Notices. 2022 Public Comment Period Announcement Figure 18 2022 Air Monitoring Network Plan June 2022 Page 157 of 168 2022 Air Monitoring Network Plan June 2022 Page 158 of 168 Public Meeting Attendance – June 8th Attendance to the virtual open forum meeting was taken by Eric Poole Jr. in lieu of a sign-in sheet, and a list of attendees is shown on Table 26. Table 26. 2021 Open Forum Meeting Attendees Name Agency Eric Poole Jr Maricopa County Air Quality Department Ben Davis Maricopa County Air Quality Department Karla Copeland Maricopa County Air Quality Department Public Comments Received and MCAQD Responses As stated in the announcement, the open forum meeting provides an opportunity for members of the public and air monitoring community to discuss the County’s air monitoring network. No comments were received during the 30-day comment period. 2022 Air Monitoring Network Plan June 2022 Page 159 of 168 APPENDIX VII - GLOSSARY 2022 Air Monitoring Network Plan June 2022 Page 160 of 168 Glossary of Acronyms and Terms ADEQ: Arizona Department of Environmental Quality AADT: annual average daily traffic count aka: Also known as AMD: Air Monitoring Division AMNP: Air Monitoring Network Plan - an annual report produced for U.S. EPA each calendar year that provides comprehensive information regarding the performance of the County’s air quality surveillance system, e.g., network of SLAMS and SPM monitoring stations and / or sites, and the data collected and reported to EPA. The plan includes proposed future changes to the system as well. Analysis Method Refers to the laboratory method used to process and analyze PM and Pb filter samples. Analyzer: A monitor that samples the air and produces real-time data without collecting a sample that must be laboratory analyzed. ANSI: American National Standards Institute AQI: Air Quality Index - the index that applies to each criteria pollutant and shows the concentration of each pollutant relative to its respective standard. When the AQI reaches 101, the pollutant’s concentration has exceeded the NAAQS. AQS: Air Quality System, sometimes defined as the Air Quality Subsystem. The AQS is the U.S. EPA’s ambient air database. ASQ: American Society for Quality Attainment: Attainment refers to a geographical area as being “in compliance” with a NAAQS and the U.S. Clean Air Act. After several years of no violations of a NAAQS, the U.S. EPA can classify a geographic area as in attainment for a particular CP. AWT: Average Weekday Traffic count BAM: Beta Attenuation Monitor. A continuous particulate measuring instrument used previously by MCAQD to measure PM10. CAA: Clean Air Act CASAC: Clean Air Scientific Advisory Committee CBSA: Core-Based Statistical Area – is defined by the U.S. Office of Management and Budget as a statistical geographic entity consisting of the county or counties associated with at least one urbanized area/urban cluster of at least 10,000 in population, plus adjacent counties having a high degree of social and economic integration. 2022 Air Monitoring Network Plan June 2022 Page 161 of 168 CFR: The Code of Federal Regulations is published annually and contains the codification of the general and permanent rules published in the Federal Register by the executive departments and agencies of the Federal Government. An eCFR is a free electronic version; however, it is not the legal version. Class I Area: Federally designated areas of special national or regional scenic, recreational, or historic value where maximum protection of environmental quality is highest. Class 1 areas are subject to special protection including mandated visibility requirements to prevent significant deterioration. CP: Criteria Pollutant, or the Central Phoenix site, depending upon context CO: Carbon monoxide, a criteria pollutant Collocated: The practice of establishing a second pollutant monitor within a specified distance and of a specified type at a monitoring site for quality assurance purposes. Continuous Monitor: A method of monitoring air pollutants that is continually measuring the quantity of the pollutant, either gaseous or particulate. Continuous monitors are analyzers that can obtain real-time or short-term averages of pollutants. Continuous monitors may also be referred to as “automated” monitors. Criteria Pollutants: Six pollutants (CO, O3, NO2, Pb, PM, and SO2) that have NAAQS established by the U.S. EPA. CSA: Combined Statistical Area - is defined by the U.S. Office of Management and Budget as when very large cities combine two or more CBSAs, these larger areas are referred to as combined statistical areas CSN: The chemical speciation network - a nationwide, research air monitoring network designed to ferret-out the chemical constitutes of and to discern trends in PM2.5 pollution. This program is managed by the U.S. EPA OAQPS. Delta T: The difference between two levels of temperature measurements - Delta T is measured in the MCAQD network at heights of 2 and 10 meters. A higher temperature at the upper level indicates a temperature inversion. Design Value: A design value is a statistic that describes the air quality status of a given area relative to the level of the NAAQS. For a concentration-based standard, the air quality design value is simply the standard-related test statistic. The design value of a pollutant monitoring network is the highest sample value in the network used to compare to the NAAQS; i.e., the 24-hour PM2.5 design value for the network is the monitor with the highest 3-year average of the 98th percentile. Distance from Obstructions Not on Roof: Means the horizontal distance and vertical height in meters from obstructions such as trees, walls, etc. that are higher than the sample probe/inlet. 2022 Air Monitoring Network Plan June 2022 Page 162 of 168 Distance from Obstructions on Roof: Means the horizontal distance and vertical height in meters from obstructions on a roof such as a parapets, penthouses, and firewalls to the sample probe/inlet. Distance from Supporting Structure: Means the horizontal distance and vertical height in meters from a building or shelter roof to the sample probe/inlet. A roof supports all monitors; whether it be the roof of a building, trailer (room/shelter), or monitor housing cabinet. EBAM: E-Beta Attenuation Monitor - is a rugged, portable, battery or solaroperated analyzer that is suitable for obtaining and reporting continuous measurements of particulate matter in remote locations. EBAMs are often equipped with wind speed and direction instrumentation as well. EBAMs are particularly useful for temporary measurements of PM related to an event. EPA R9: Environmental Protection Agency Region 9 EE: Exceptional Event – a high CP pollution event that is considered to be uncontrollable and caused by natural sources of pollution or an event that is not expected to recur at a given location. An EE can apply to any CP, but in Maricopa County, most recent EEs have been related to high PM10 events. Event: Generally, refers to a high pollution day where a NAAQS was exceeded. Exceedance: Generally, refers to a high pollution day where a NAAQS was exceeded. FDMS-TEOM: Filter Dynamics Measurement System-Tapered Element Oscillating Microbalance - a continuous particulate analyzer used by MCAQD to measure PM2.5. FEM: Federal Equivalent Method - an EPA-approved method of sampling and analyzing the ambient air for an air pollutant, i.e., includes the monitor and its operating firmware and procedure(s). An FEM must pass required testing found in 40 CFR Part 53 and show CP data produced are similar to the Federal Reference Method (FRM). Continuous particulate matter and some gaseous analyzers are FEMs. Filter-based sampler: A method of monitoring particulate pollution that involves exposing a pre-weighed filter to a specific flow rate for a prescribed period of time, usually midnight to midnight, or 1440 minutes. The filters are then postweighed to determine the mass of particulates per volume, e.g., µg/m3. Filter samples are stored for a period and can be referenced later if needed. FRM: Federal Reference Method - an EPA-approved method of sampling and/or analyzing the ambient air for an air pollutant, i.e., includes the monitor and its operating firmware and procedure(s). An FRM must pass required testing found in 40 CFR Part 53 and show CP data produced are accurate based on acceptable precision and bias limits. These methods are the baseline that all other methods reference, e.g., Federal Equivalency Methods (FEM). 2022 Air Monitoring Network Plan June 2022 Page 163 of 168 HAPs: Hazardous Air Pollutants - airborne chemicals that are been listed in the federal Clean Air Act and have an associated standard or process requirement determined for it. Sample Probe/Inlet Height: Means the vertical height in meters above the roof, or additional supporting structure on top of the roof if present, to the air sample intake. In general, gas samples enter through a probe at the end of the sample line and PM and Pb samples enter through an inlet that helps control the aerodynamic size of particles sampled. MAG: Maricopa Association of Governments MCAQCED: Maricopa County Air Quality Compliance and Enforcement Division MCAQD: Maricopa County Air Quality Department Metadata: refers to data that provide information about other data; and typically includes geospatial and non-geospatial information. See EPA Metadata Specifications MO: Monitoring organization Monitor: Monitor is a term that refers to an instrument, sampler, analyzer, or other device that measures or assists in the measurement of atmospheric air pollutants and which is acceptable for use in ambient air surveillance under the applicable provisions of 40 CFR Part 58 Appendix C. µg/m3: micrograms per cubic meter µm: micrometers MSA: Metropolitan Statistical Area is designated by the U.S. Office of Management and Budget as a geographical area based on the concept of a core area with a large population nucleus, plus adjacent communities having a high degree of economic and social integration within that core. Metropolitan and micropolitan statistical areas are the two categories of CBSAs. Metropolitan areas have populations greater than 50,000, and micropolitan areas have populations between 10,000 and 50,000. The MCAQD operates air monitoring stations within the Phoenix-Mesa MSA, which includes portions of Maricopa and Pinal County. NAAQS: National Ambient Air Quality Standards - health and welfare-based standards established by the U.S. EPA that set permissible airborne concentration levels for the CPs. NATTS: National Air Toxics Trend Stations - a nationwide, research air monitoring program designed to measure toxic air pollutant trends. This program is managed by the U.S. EPA OAQPS. NCore: National Core multi-pollutant is a national network of multi-pollutant monitoring sites used to represent the nation as a whole. There are currently ~75 NCore sites, 1 to 3 per state plus Washington D.C., Virgin Islands, and Puerto Rico located in both urban and rural areas. This program is managed by the U.S. EPA OAQPS. 2022 Air Monitoring Network Plan June 2022 Page 164 of 168 Network: All stations of a given type or types NO2: Nitrogen dioxide. The indicator compound used to gauge the ambient concentration of NOx. NOX: Nitrogen oxide(s), a criteria pollutant. NOx is the sum of nitric oxide (NO), NO2, and other nitrogen-containing compounds. Nonattainment: Means a geographical area is “not in compliance” with the NAAQS and the U.S. Clean Air Act. After several years of violating a NAAQS, the EPA can classify a geographic area as being in nonattainment for a particular criteria pollutant. O3: Ozone, a criteria pollutant OAQPS: The U.S. EPA Office of Air Quality Planning and Standards, located in Research Triangle Park, N.C., which serves as EPA “Headquarters” for ambient air monitoring guidance and the NAAQS reviews. PAMS: Photochemical Ambient Monitoring Stations - a nationwide, research air monitoring program designed to measure specific airborne chemicals that are known to be “precursor pollutants” that form ozone when combined with ultraviolet light and heat. This program is managed by the U.S. EPA OAQPS. PCAQCD: Pinal County Air Quality Control District Pb: Lead, a criteria pollutant Performance Evaluation (PE) Audit: Refers to the AMD QA section’s audits on pollutant monitors. • For gaseous analyzers, the EPA requires that an Annual Performance Evaluation be performed on each analyzer at least once annually, e.g., as per 40 CFR Part 58, Appendix A, §3.2.2., 25 percent of the monitors operating within each gaseous pollutant’s network are evaluated quarterly; thereby, each monitor is evaluated once per year. • For PM and Pb monitors, e.g., analyzers and samplers, EPA requires that a Semi-Annual Flow Rate Audit be performed on each monitor at least twice annually, e.g., as per 40 CFR Part 58, Appendix A, §§3.2.4 and 3.3.4, and 40 CFR Part 58, Appendix A, §3.4, respectively. Particulate matter, also known as “particulates”, project manager, or preventative maintenance depending on context PM: PM2.5: Particulate matter 2.5 micrometers in aerometric diameter or smaller, a criteria pollutant. PM2.5 is also referred to as “fine” particulate matter. PM10: Particulate matter 10 micrometers in aerometric diameter or smaller, a criteria pollutant PM10-2.5 and / or PMc: “Coarse” particulate matter is less than 10 micrometers, but recently, has come to mean PM10 minus PM2.5, not currently regulated as a lone criteria pollutant. ppb: parts per billion 2022 Air Monitoring Network Plan June 2022 Page 165 of 168 ppm: parts per million PQAO: Primary quality assurance organization - a monitoring organization (MO) or other organization that is responsible for a set of air monitoring stations that monitor the same pollutant and for which data quality assessments can be pooled. Each criteria pollutant sampler/monitor at a monitoring station in the SLAMS and SPM networks must be associated with one, and only one, primary quality assurance organization. Primary Standard: The portion of the NAAQS designed to protect public health. Probe: The end of a sample line where a gas sample is extracted from the atmosphere for delivery to a point analyzer for pollutant analysis Probe/Inlet Height: The vertical height in meters above ground level to the air sample intake location for an analyzer or sampler Probe (Sample) Line Material: Refers to the chemical composition of the sample line tubbing. QA: Quality assurance – generally refers to the administrative or managerial processes in place to verify that quality control activities are successfully carried out by personnel and that data produced meet specified quality requirements prior to use, i.e., written guidance documents, program oversight activities, etc. QC: Quality control – generally refers to the technical activities in place to produce high quality data, i.e., air monitoring instruments operate within specified criteria, data collection from sites, etc. Quality System: The overall system of technical activities that measure the attributes and performance of a process, item, or service against defined standards to verify that they meet the stated requirements established by the customer. (see ANSI/ASQ E4-2004) Rapid Response: Rapid Response Notification System - a communication tool used by MCAQD to manage high pollution events by alerting residents, intergovernmental personnel, and stakeholders of increasing PM concentrations. Sampler: A type of air monitor that collects a physical sample for analysis. Air samples may be collected onto a filter, cartridge, or other medium, or into a device such as a canister. Sample Residence Time: This measurement applies to CO, NO2, O3, and SO2 sample lines and it mean the amount of time in seconds that it takes for a sample of air to travel from the probe intake to the bulkhead of the point analyzer. EPA recommends a residence time of 10 seconds, but 20 second is the maximum allowable. Secondary Standard: The portion of the NAAQS designed to protect public welfare and the environment. 2022 Air Monitoring Network Plan June 2022 Page 166 of 168 SIP: State Implementation Plan - a SIP is a plan produced by state and/or local regulatory agencies that specifies obligations that will be taken for a geographic area in nonattainment to meet the NAAQS for a criteria pollutant. SIPs are also developed for maintaining compliance with the NAAQS. Site: A site is a geographic location. One or more air monitoring stations can be located at a site. SLAMS: State and Local Air Monitoring Station - the SLAMS network consists of approximately 5,000 monitoring stations nationwide whose size and distribution is largely determined by the needs of State and local air pollution control agencies to meet their respective SIP requirements. Other types of monitoring stations include: NCore (national core) and SPM (special purpose). Currently, the MCAQD operates SLAMS only. SO2: Sulfur dioxide, a criteria pollutant SPM: Special Purpose Monitor - a special purpose monitor provides data for special studies needed by the State and local agencies to support SIPs and other air program activities. The SPMs are not permanently established as part of a particular pollutant’s monitoring station(s); their location can be adjusted easily to accommodate changing needs and priorities. SSI: Size Selective Inlet - the inlet used on high- and low-volume particulate samplers and analyzers to determine the size of particles sampled or measured by the monitor. The particle size separation process usually employs impaction, filtration, or cyclonic flow. Station: A station may comprise a single CP monitor, or a group of monitors with a shared objective, located at a particular site. TEOM: Tapered Element Oscillating Microbalance - an automated, continuous FEM PM analyzer used by MCAQD to measure PM10 and/or PM2.5 concentrations, depending upon the instrument model and air sample inlet configuration(s). tpy: tons per year UATMP: Urban Air Toxics Monitoring Program - a nationwide research air monitoring program designed to measure toxic air pollutants within urban areas. This program is managed by the U.S. EPA OAQPS. U.S. EPA: United States Environmental Protection Agency VOC: Volatile Organic Compound - VOCs are chemical compounds that can easily vaporize and enter the atmosphere. There are many natural and artificial sources of VOCs; solvents and gasoline make up some of the largest artificial sources. VOCs will react with NOx in the presence of sunlight to create ground-level O3 pollution. 2022 Air Monitoring Network Plan June 2022 Page 167 of 168 Volume: The amount of air sampled for analysis. Volume is calculated by multiplying a monitor’s flowrate by the collection time, usually in minutes. Volume = flowrate X minutes The amount of data in a file or database. 2022 Air Monitoring Network Plan June 2022 Page 168 of 168