U.S. EPA reference method ambient air and meteorological monitoring programs have become extremely efficient. Programs that once required large monitoring trailers, elaborate data communication protocols and extensive “baby-sitting” now consist of small shelters, wireless communication and extended periods of remote operation. ALL4 has substantial experience designing, operating, managing and ensuring the quality of ambient air and meteorological U.S. EPA reference method monitoring programs. These monitoring programs can be short-term or long-term projects including a single station or multiple stations. ALL4 has integrated new approaches to U.S. EPA reference method monitoring program design and operation including posting of real-time data to secure websites and using cellular phone applications to view, operate, collect, and retrieve monitoring data.
In the last 5 years a new generation of low-cost, highly portable air quality sensors has become available to the general public and scientific community. These low-cost sensors are usually supported by a web-based network that makes all the data publicly available online. ALL4 has been tracking the development of low-cost sensors and has experience in evaluating the data quality and recommended end use for the collected data.
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ALL4 has conducted third-party quality assurance audits for a diverse base of industrial clientele as well as state and Federal agencies. These audits have taken place over a broad geographic area across the U.S.
ALL4 has experience with ambient air monitoring programs for a variety of pollutants, including:
- Sulfur Dioxide (SO2)
- Oxides of Nitrogen (NOX)
- Particulate Matter less than 10 Micron (PM10)
- Particulate Matter less than 2.5 Micron (PM2.5)
- Ozone (O3)
- Carbon Monoxide (CO)
- Air Toxics
Meteorological Monitoring Services
Meteorological monitoring programs range from small scale monitoring programs where measurements are made with 10-ft. tripod to multi-level tall towers and remote sensing equipment with Doppler Sonic Detection and Ranging (SODAR) systems. The design of the meteorological monitoring programs considers the end use of the data and typically incorporates long-range planning for additional uses of the data.