Air quality monitoring data is being used for any of the following purposes:
- Establish current conditions within the a vicinity
- Assist in determining background air concentrations of the pollutants being measured
- Check compliance with air quality standards and evaluate control strategies
- Assess environmental and health risks
- Carry out assessment surveys in relation to other studies and projects
- Benchmark air dispersion modeling studies.
For ambient air monitoring, the selection of the sampling locations is primarily based on downwind proximity to the major emission source, sampler exposure to the pollutants in an open area, and location of receptors, such as residential areas.
Apercu owns hi volume samplers, di-gas bubblers, a PM10 sampler and noise meters to conduct ambient air monitoring. Weather at the time of sampling are recorded with the help of barometers, anemometers and a weather station. Sample analysis is conducted by a DENR accredited third party laboratory.
Emissions monitoring is normally subcontracted to accredited third party firms. The USEPA “Quality Assurance Handbook for Air Pollution Measurement Systems: Volume III Stationary Source-Specific Methods” is used as a guide for producing data that are complete, representative and of known precision and accuracy.