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Air Monitoring Trends in New Jersey

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Presentation on theme: "Air Monitoring Trends in New Jersey"— Presentation transcript:

1 Air Monitoring Trends in New Jersey
Trends in Criteria Air Pollutants and Air Toxics Pollutants Bureau of Air Monitoring, Bureau of Air Quality Planning & Evaluation New Jersey Department of Environmental Protection March 2, 2018 NJ has been monitoring for air toxics since 2001 In this presentation, I will provide Purpose for air monitoring Show monitoring stations and details about air toxics monitoring Show trends in monitoring concentrations and inventoried emissions

2 Air Monitoring Networks in New Jersey
Criteria air pollutants - CO, SO2, O3, NO2, Particulate Matter (PM10 & PM2.5), and Pb PAMS - O3 Precursors (VOCs) Air Toxics - VOCs, Elements, Cations, Anions, Carbon Species Acid Precipitation Meteorological Measurements >100 monitors in 32 locations

3 National Ambient Air Quality Standards (NAAQS)
Pollutant Primary/ Secondary Averaging time Level Form Carbon Monoxide (CO) Primary 8 Hour 9 ppm Not to be exceeded more than once per year 1 hour 35 ppm Lead (Pb) Primary and Secondary Rolling 3 month period 0.15 μg/m3 Not to be exceeded Nitrogen Dioxide (NO2) 1 Hour 100 ppb 98th percentile of 1-hour daily maximum concentrations, averaged over 3 years Secondary 1 Year 53 ppb Annual Mean Ozone (O3) Primary and Secondary 0.070 ppm Annual fourth-highest daily maximum 8-hour concentration, averaged over 3 years Particulates (PM) PM2.5 12.0 μg/m3 Annual Mean Averaged Over 3 Years 15.0 μg/m3 24 Hours 35 μg/m3 98th percentile, Averaged Over 3 Years PM10 150 μg/m3 Not To Be Exceeded More Than Once Per Year On Average Over Three Years Sulfur Dioxide (SO2) 75 ppb 99th percentile of 1-hour daily maximum concentrations, averaged over 3 years 3 hours 0.5 ppm

4 Ozone Trend,

5 Fine Particle (PM2.5) Trend, 2001-2016

6 Sulfur Dioxide Trend,

7 Nitrogen Dioxide Trend, 2000-2016

8 Carbon Monoxide Trend, 1990-2016

9 Lead Trend,

10 Air Toxics Monitoring Stations in NJ
Camden Spruce Street Urban station in southern NJ Chester Background station Elizabeth Lab Urban station in northern NJ Rutgers University Suburban station Since air toxics not required by EPA, they were not involved in selecting the air toxics stations in NJ Air toxics monitoring was added to existing stations Air toxics monitoring is expensive, select 4 stations

11 Air Toxic Pollutants: Gaseous VOCs
71 Volatile Organic Compounds (VOC) analyzed in each sample 43 VOCs are Hazardous Air Pollutants (HAPs) listed in the Clean Air Act 24-hour samples are taken every 6 days Samples sent to EPA’s contract laboratory for analysis Not all VOCs are detected in each sample Analysis technology has improved over the years Analysis costs about $1000/sample EPA’s tool for encouraging air toxics monitoring is the national contract for analyzing samples for VOC/air toxics Contract is available to all states, it is not free, cost is subtracted from the Air Grant the funding mechanism is “off the top” meaning the amount is subtracted from the Air grant before the money gets to EPA R2, so there is no match for the funding. Results are presented in the Air Toxics section of the Air Monitoring Annual Report

12 Acetaldehyde – NJ Emissions and Monitored Concentrations
Lines are monitoring concentrations from 4 sites Black bars are the total inventoried emission See if monitored concentrations correlate with inventoried emissions Acetaldehyde – primarily secondary formation in atmosphere No clear trend for urban and suburban stations in recent years Decrease in concentrations for background site Increase in total inventoried emissions Exploring the inventory

13 Benzene - NJ Emissions and Monitored Concentrations
Benzenze – mobile and background Decrease in concentrations for all stations Background station has lowest concentrations, urban has highest Decrease in total inventoried emissions

14 1,3-Butadiene - NJ Emissions and Monitored Concentrations
1,3-butadiene – mobile and background No clear trend in recent years for all stations Background has lowest concentrations, urban has highest Decrease in inventoried emissions

15 Carbon Tetrachloride – NJ Monitored Concentrations
Carbon Tetrachloride – onced used as degreaser, propellant, refrigerant, now no longer in production in NJ, persistent chemical Concentrations are same/similar at all sites No difference in urban and background stations Concentrations increasing slightly ]

16 Chloromethane - NJ Emissions and Monitored Concentrations
Chloromethane (methyl chloride) No clear trend/change in concentrations at all sites Concentrations similar/same at all sites No difference between urban and background Decrease in total inventoried emissions

17 Ethylbenzene - NJ Emissions and Monitored Concentrations
Ethylbenzenze – mobile and background Decrease in concentrations for all stations Background station has lowest concentrations, urban has highest Decrease in total inventoried emissions

18 Formaldehyde - NJ Emissions and Monitored Concentrations
Formaldehyde – secondary and mobile No clear trend for urban and suburban stations in recent years Decrease in concentrations for background site Increase in total inventoried emissions Exploring the inventory


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