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We develop studies to assess the potential impact of the application, volatilization and subsequent degradation of products through the atmosphere. Once the field site has been selected (the studies are commonly performed in real-world use areas) and determined to be suitable, meteorological, air sampling and other instruments are installed.

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Our capabilities include:

  • Off-the-shelf meteorological instruments can be assembled to focus on study specific parameter measurements and controlled with custom software written to prioritize collection of key data.
  • Multifunction meters can be substituted to streamline data collection, reduce instrumentation footprints and maintenance, and enhance wireless data collection.
  • Air sampling pumps can be strategically placed to meet the study data collection requirements.
  • Real-time remote access to the data streams can be established allowing rapid assessment of site conditions.
  • Automated wireless downloads can be implemented to eliminate the need for personnel to repeatedly visit the site.

Our Measurements

Whether the calibrated application is performed by lance, multi-nozzle spray booms or other techniques, confirmation of the application to the target area (water bodies, aerial, ground and foliage) and the potential escape of the test substance from it may be monitored with any combination of spray cards, soil lined pans, other absorbent media and vapor detection instruments.

Beginning with application and continuing through dissipation of the product in the environment, the potential movement of the product and its degredation is monitored.

Multiple air pumps, staged at different elevations, allow derivation of vertical profiles of wind speed, wind direction and chemical concentrations to meet the study requirements.
Air and vapors are drawn over absorbent media at variable rates and durations according to a prescribed sampling plan (continuous, intermittent and composite grab samples may be collected).
Attended and unattended sampling plans can be established.

The analytical results, sample collection parameters and meteorological conditions are all combined to quantify the potential emission rate of the product tested.


These studies have been performed in compliance with EPA FIFRA Good Laboratory Practice Standards, 40 CFR Part 160. They are designed to fulfill the requirements outlined in US EPA Fate, Transport and Transformation Test Guidelines for Field Volatility and other associated guidance documents. US EPA approved air monitoring procedures and sampling techniques are employed.

When necessary and appropriate, specialized air monitoring expertise from partnered subcontractors is utilized under Waterborne’s supervision and management to meet all client needs.

Components of these techniques can be applied to the study of applications whether aquatic, aerial or ground to assess application accuracy and off target drift.