57 th Meeting of the Joint Advisory Committee for the Improvement of Air Quality in the

1. Air Quality Monitoring OperationsCity of El Paso & Cd. Juarez Air Quality Network A discussion on the continuous air monitoring network, data acquisition, and potential new initiatives in ambient ozone monitoring. 57th Meeting of the Joint Advisory Committee for the Improvement of Air Quality in the Cd. Juárez, Chihuahua / El Paso, Texas / Doña Ana County, New México Air Basin IMIP, Cd. Juarez, Chihuahua / TCEQ Region 6, El Paso, Texas May 23, 2013 Candice Sifuentes Environmental Services Air Quality

2. Air Quality Program is dedicated to protecting public health and the environment, by ensuring that the regulated community is in compliance with federal, state and local rules and regulations. This is to be achieved through a comprehensive program which includes compliance inspections, environmental air monitoring, public outreach and enforcement of rules and regulation. At a minimum, the staff is responsible for ensuring that work products are scientifically valid, legally defensible, and of known and acceptable quality. Mission

3. Wind Speed Relative Wind Speed Relative Wind Direction Wind Gust Standard Deviation of Wind Direction Outdoor Temperature Indoor Temperature Relative Humidity Carbon Monoxide Ozone Particulate Matter 10 Microns or Less Portable Sampler Unit

4. REGION 2 Carbon Monoxide Ozone Wind Speed Relative Wind Speed Relative Wind Direction Wind Gust Standard Deviation of Horizontal Wind Direction Outdoor Temperature Indoor Temperature Relative Humidity Particulate Matter 10 Microns or Less

5. Carbon Monoxide Ozone Sulfur Dioxide Wind Speed Relative Wind Speed Relative Wind Direction Wind Gust Standard Deviation of Horizontal Wind Direction Outdoor Temperature Indoor Temperature Relative Humidity Total Suspended Particulate Portable Sampler Unit Tapered Element Oscillating Microbalance Particulate Matter 10 Microns or Less

6. To ensure that the collocated QC monitors are located at sites with high measured concentrations, El Paso Tillman (AQS 481410002) sites. Wind Speed Relative Wind Speed Relative Wind Direction Wind Gust Standard Deviation of Wind Direction Indoor Temperature Carbon Monoxide Particulate Matter 10 Microns or Less Total Suspended Particulate Federal Reference Method (7) FRM Pm2.5 - Local Conditions Super SASS Ambient (43) URG OcCsn_Rev (15) Beta Attenuated Monitor (3) Pm10 - Lc Beta Attenuated Monitor Pm10-2.5 - Local Conditions Beta Attenuated Monitor Pm2.5 - Local Conditions Portable Sampler RadNet

7. Our air monitoring stations near the international bridges and throughout the city measure ambient air concentrations, we cannot speciate the contributing source(s) that make up the air contaminate that the monitor detects. We can make a general observation from the attached charts, that the concentration of carbon monoxide (CO) along the international border, near the Chamizal bridge and downtown bridges have the highest concentration of CO, as compared to the other city monitors that measure CO. The CO concentrations from our three (3) monitoring stations in Cd Juarez MX. indicate a higher concentration than what is detected in El Paso. The wind direction is predominately out of the southwest meaning that El Paso is downwind of Cd Juarez MX. Carbon Monoxide

8. The chart plots yearly averages and maximum yearly concentrations of CO for years 2005-2012.  The chart indicates a downward trend in CO concentrations, which is what we expect due to the controls currently in place, which have been effective in keeping us in attainment with the CO standard.

9. The chart plots yearly averages and maximum yearly concentrations of CO for years 2005-2012.  The chart indicates a downward trend in CO concentrations, which is what we expect due to the controls currently in place, which have been effective in keeping us in attainment with the CO standard.

10. National Standard- 75 El Paso–69.6 (Current 3 yr. Ave.) Trend-lines for Ozone Controls Ozone Levels 90 85 80 75 Ozone Levels (ppb) 70 65 Latest EPA Proposal 60 55 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 Years El Paso UTEP C12 Ascarate Park C37 Chamizal C41 Socorro C49 Skyline Park C72 Ivanhoe C414 Average of trend Lines Linear (Average of trend Lines)

11. Alternative Approach to Ambient Ozone Monitoring Advance Transformers CAMS has shown that a photometric interferant is absorbing photons as well or better that Ozone at 254 nm. Using MultiRAE Plus Multiple-Gas Monitor, VOC has been observed from the south/southwest direction. This VOC is an interferant since the current UV photometric analyzer stationed at CAM 661 experience large wet dry episodes, especially when switching between wet sample and dry calibration gases. A hydrocarbon spike experiment could be carried out to examine how organic compounds might interfere with ozone monitors. Why not replace Ethylene with Nitric Oxide? Basically, the premise is based on a reverse NOx analyzer. Low cost, high precision bottles of Nitric Oxide are readily available. Carbon Monoxide and Ozone

12. Summary • Downward trend of ozone levels continue in the El Paso region. • Populations in both the EL Paso and Juarez municipalities have grown extensively. • Additional reductions may be achieved through an organized Public outreach & Voluntary Partnerships campaign, which will require additional funding.

13. Open Forum?Candice Sifuentes City of El Paso Environmental ServicesAir Quality Monitoring Operations 7968 San Paulo E108 El Paso, Texas 79907sifuentesca@elpasotexas.gov915 256-9841 office cell 915 599-6233 office desk