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Available Resources for AB 617 Community Air Monitoring

A complete list of all available resources for field monitoring. These resources will be used to satisfy the monitoring needs of all present and future AB 617 communities, and availability will depend on the specific air monitoring needs and objectives at each community, which is to be determined after consulting with the Community Steering Committee

Field Equipment

South Coast AQMD staff will use a combination of existing and new air monitoring equipment to implement the air monitoring portion of AB 617 for developing community-driven and measurement-based emission and exposure reduction strategies. In essence, appropriate technology for the intended purpose will be used to monitor the pollutants of interest in each AB 617 community.

List of Available Field Equipment

Make Model Species Measured Measurement Principle South Coast AQMD SOP Minimum Reporting Limit UNITS AVAILABLE Type Sampling rate
Met One, BAM 1020 PM2.5, PM10 Beta Ray Attenuation SOP00072 4.8 µg/m3 (hourly) 1 µg/m3 (daily) 1 Continuous Hourly
Thermo Scientific, Model 55i Methane, and Non-methane Hydrocarbons Gas Chromatography (Flame Ionization Detector) SOP00145 0.05 ppm (300s) 2 Continuous Hourly
Mocon, 9000 NMHC Analyzer Methane, and Non-methane Hydrocarbons Gas Chromatography (Flame Ionization Detector) SOP00138 0.5, 0.1 ppm (Daily) 2 Continuous Hourly
Xonteck, 901 VOC Samplers VOC Active Sampler SOP00080 (For Previous Model 910)   6 Time Integrated NA
Mesalabs, Omni Sampler PM Speciation, Metals, Hexavalent Chromium Active Sampler SOP00170   36 Time Integrated NA
Picarro, G2204 CH4, H2S Cavity Ring Down Spectroscopy SOP00157 5 ppb 1 Continuous One Second
PQ100 Samplers PM Speciation, Metals, Hexavalent Chromium Active Sampler SOP00146   6 Time Integrated NA
Met One , SASS Samplers PM Active Sampler SOP0086   5 Time Integrated NA
Xonteck, 924 Samplers PM Speciation, Metals, Hexavalent Chromium Active Sampler SOP00094   8 Time Integrated NA
TSI, DustTrak PM2.5, PM10 Light Scattering, Laser Diode Draft in Progress 1 µg/m3 3 Continuous One Minute
Magee Sci. Aethalometer AE33 BC Optical attenuation SOP000142 0.01 µg/m3 3 Continuous One Minute
Cooper Environmental Xact 625 Multi-Metals Energy Dispersive X-Ray Fluorescence (EDXRF) Analysis Draft in Progress depends on the species 1 Continuous One Minute
Teledyne, CPC MOdel 651 UFP Condensation Particle Counter Super Saturated Vapor SOP00143     Continuous One Second
TSI, CPC UFP Condensation Particle Counter Super Saturated Vapor SOP00143     Continuous One Second
Teledyne, T200 NO, NO2, NOx Chemi-luminescence Detection User Manual 0.4 ppb 3 Continuous One Minute
Teledyne, T640 PM2.5 Scattered Light Spectrometry User Manual 0.1 µg/m3 3 Continuous One Minute
Teledyne, T300 CO Gas Filter Correlation (GFC) User Manual 0.2 ppm 3 Continuous One Minute
VOC Monitor (TBD) VOC TBD TBD TBD 2 Continuous TBD
Wind System Meteorological Parameters       3 Continuous One Second
Li-Cor Biosciences, LI-7700 Methane Wavelength Modulation Spectroscopy (WMS) User Manual   1 Continuous One Second
Enviro technology, PAX BC Photoacoustic Extinctiometer User Manual   1 Continuous One Second
TBD (Fast-Response O3) O3 TBD TBD TBD 1 Continuous One Second
TBD (Reference PM Monitor) PM TBD TBD TBD 1 Continuous Hourly
TBD (Fast Response PM Monitor) PM TBD TBD TBD 1 Continuous One Second
TBD (Particle Sizer) PM TBD TBD TBD 1 Continuous One Second
TBD (H2S Monitor) H2S TBD TBD TBD 3 Continuous TBD  
TBD (H2S, O3, NOx, CO) H2S, O3, NOx, CO TBD   TBD   TBD 12 Continuous TBD  
Field Gas Chromatograph (Auto-GC) Speciated VOC Gas Chromatography User Manual Depends on the species 1 Continuous Hourly
PTR-TOF (Proton Transfer-Time of Flight Mass Spectrometer) Speciated VOC Chemical Ionization Mass Spectrometry User Manual 10 ppt 1 Continuous One Second

 

Note: The field instruments listed above is not exhaustive and the monitoring equipment that will be used for AB 617 may change depending on the project needs and CSC input. It should be noted that these resources will be used to satisfy the needs of all present and future AB 617 communities, and availability will depend on the specific air monitoring needs and objectives at each community, which is to be determined after consulting with each CSC.


Mobile Platforms

Mobile measurements can be conducted using real- or near-real-time instruments to allow for large-scale community air pollution mapping at a fraction of the cost of conventional approaches and at higher spatial and temporal resolution. This will allow community members and policy makers to better understand local exposure levels, identify potential sources of emissions and track changes over time, demonstrating effectiveness of emission and exposure reduction programs.

Mobile Platform #1: This is equipped with FRM and FEM and research-grade instruments to measure the mass and number concentrations of particulate matter (PM) of various sizes, BC, CO, NO2, O3, and methane. The time resolution of these air monitoring instruments range between 1 and 60 seconds. This mobile platform is a powerful tool for identifying areas most impacted by diesel PM emissions. It can also be used to identify diesel PM hotspots, estimate community exposure, estimate the exposure impact of transportation corridors and idling spots, and to track progress of targeted emission reduction strategies.

This mobile platform is also equipped with an anemometer and a Global Positioning System (GPS) to determine wind speed and direction and to map vehicle location, speed and bearing during air quality measurements. Real-time data is logged and displayed on on-board monitors, allowing staff to rapidly detect potential emission sources and follow plumes of interest. It should be noted that although this platform is capable of detecting the ambient concentration of various air pollutants in real- or near-real time, it takes a few days to validate and process the collected information and visualize it for public consumption. A few pictures of this platform and the instruments configuration/set-up are shown in figures below.

Platform1

Air Quality Monitors and Measured Pollutants in Mobile Platform #1

Monitor

Measured Pollutant

Teledyne (T640)

PM10 & PM2.5 Mass

GRIMM (EDM 164)

PM10, PM2.5, & PM1.0 Mass and Number

Teledyne (T300)

CO

Teledyne (T500U)

NO2

Teledyne (430)

O3

Aerosol Devices Inc. (MAGIC CPC)

Particle Number

Droplet Measurement Technologies (Photoacoustic Extinctiometer (PAX))

Black Carbon



Mobile Platform #2
: This platform is equipped with multiple advanced remote optical sensing (ORS) monitors that are capable of measuring a wide range of gaseous pollutants including air toxics (e.g. methane, non-methane VOCs, NO2, SO2, NH3, benzene, toluene, ethylbenzene and xylenes) with time resolutions ranging between 1 and 30 seconds. Modern ORS techniques offer unique capabilities for monitoring trace gas emissions from point and area sources in near-real time. They are especially valuable for identifying leaks from fugitive emission sources, which are often extremely challenging to spot and/or quantify. This mobile platform is also equipped with a GPS for real-time recording of the position of the vehicle and onboard monitors for real-time data analysis and visualization. A Light Detection and Ranging (LIDAR; which provides vertical wind profiles) instrument for wind profile measurements is often deployed in conjunction with this vehicle for emission rate measurements of VOCs from refineries and other industrial facilities. This state-of-the-art mobile laboratory will be utilized for accurate characterization of facility-wide emissions from industrial sources of VOC emissions on a real or near-real time basis, fenceline monitoring, leak detection and follow up, near-real-time concentration mapping, and estimation of community exposure to air toxics. Although this platform is capable of detecting the ambient concentration of various air pollutants in real- or near-real time, it takes a few days to validate and process the collected information and visualize it for the public. Pictures of this platform and the instruments configuration/set-up are shown in figure below.

platform2

Air Quality Monitors and Measured Pollutants Used in Mobile Platform #2

Monitor

Measured Pollutant

Solar Occultation Flux (SOF)

Total Alkane, Carbon-number, Alkenes, NH3

Sky Differential Optical Absorption Spectroscopy (SkyDOAS)

NO2, SO2, HCHO

Mobile Extractive Fourier Transform InfraRed (MeFTIR)

Alkane, CH4, C2H4, C3H6, C4H8, NH3, CO,CO2, N2O

Mobile White Cell Differential Optical Absorption Spectroscopy (MWDOAS)

Benzene, Toluene, Ethylbenzene and Xylenes (BTEX)

 



Mobile Platform #3
: This platform is equipped with a state-of-the-art Proton Transfer Reaction – Mass Spectrometer (PTR-MS) capable of simultaneous real-time monitoring of hundreds of VOCs such as acetone, acetaldehyde, methanol, ethanol, benzene, xylenes and many others, including some inorganic compounds, present in ambient air. This is a fast response instrument (the time resolution spans from millisecond to 1-min) which has high sensitivity to low concentration of a wide range of VOCs (limit of detection (LOD) < 1 pptv). The high sensitivity of this mobile platform will allow the South Coast AQMD to respond to odor complaints, detect leaks or other potential sources of emissions (e.g. ports and ship emissions). Similar to the other two mobile platforms, real-time wind and position data will be measured and onboard computers will be used for real-time data analyses and visualization. Although this platform is capable of detecting the ambient concentration of various air pollutants in real- or near-real time, it takes a few days to validate and process the collected information and present the data visually.

Monitoring Trailers

Fixed air monitoring trailers will be placed at strategic locations to fully characterize emissions and community’s exposure (e.g. downwind of an identified air pollution source) to satisfy community specific air monitoring objectives. All fixed monitoring trailers available to the South Coast AQMD will be equipped with EPA approved instruments (i.e. FRM and/or FEM) and, if not commercially available, with state-of-the-at technology that is appropriate to measure the pollutant(s) of interest and for the intended purpose. They will be also equipped with wind measurement systems to better characterize and potentially locate the source(s) of the measured air pollutants. Table 6 summarizes the capabilities of the fixed monitoring trailers available for AB 617 deployment. It should be noted that these resources will be used to satisfy the needs of all present and future AB 617 community, and availability will depend on the specific air monitoring needs and objectives at each community, which is to be determined after consulting with the CSCs. The five monitoring trailers available to the South Coast AQMD will be outfitted with air monitoring instrumentation to address the specific air quality concerns of AB 617 communities. Trailers 1 and 2 have tentatively been assigned to the WCWLB community and their instrument configuration (as proposed in Table 6) seems adequate to fit the specific air monitoring needs of this community. The final instrument configuration for each trailer will be determined after consultation with the CSC.

Available Fixed Monitoring Trailers for Community Monitoring in All AB 617 Communities

Trailer

Make (Model)

Measured Pollutant

Measurement Type

Trailer 1

Magee (AE33)

BC

Continuous

Teledyne/TSI CPC (model 651)

Particle Number

Continuous

Teledyne (T200)

NOx

Continuous

Teledyne (T640)

PM10 & PM2.5 Mass

Continuous

Picarro (G2204)

H2S

Continuous

Teledyne (T300)

CO

Continuous

Trailer 2

Picarro (G2204)

CH4 and H2S

Continuous

Mocon (SERIES 9000 MNME Analyzer)

Total Hydrocarbons, CH4, NMHC

Continuous

Tricorn Tech (MiTAP P310)

VOCs

Continuous

Xonteck (901 Canister Samplers)

VOCs

Time Integrated

BGI (Omni)

Speciated PM

Time Integrated

Trailer 3

Picarro (G2204)

CH4 and H2S

Continuous

Mocon (SERIES 9000 MNME Analyzer)

Total Hydrocarbons, CH4, NMHC

Continuous

Tricorn Tech (MiTAP P310)

VOCs

Continuous

Xonteck (901 Canister Samplers)

VOCs

Continuous

BGI (Omni)

Speciated PM

Time Integrated

Trailer 4

Magee (AE33)

BC

Continuous

Teledyne/TSI CPC (Model 651)

Particle number

Continuous

Teledyne (T200)

NOx

Continuous

Teledyne (T640)

PM10 & PM2.5 Mass

Continuous

Picarro (G2204)

H2S

Continuous

Teledyne (T300)

CO

Continuous

Trailer 5

Magee (AE33)

BC

Continuous

Teledyne/TSI CPC (Model 651)

Particle Number

Continuous

Teledyne (T200)

NOx

Continuous

Teledyne (T640)

PM10 & PM2.5 Mass

Continuous

Cooper (Xact 625)

Particulate Metals

Continuous

Teledyne (T300)

CO

Continuous

Picarro (G2204)

H2S

Continuous

 


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