The role of continuous emission monitors (CEM) and continuous monitoring systems (CMS) continues to increase in regulatory compliance. New screening or monitoring tools are also being deployed to measure VOC, HAP and PM2.5 levels at fence-lines, generate screening level data on ambient impacts, and detect/measure fugitive emissions. One recent example is the increasing activity around Next Gen sensors for VOC and PM2.5. The objective of this focus area is to track developments and develop sector-specific expertise through targeted technical studies.
Emission Monitors & Sensors
As the use of CEMs in demonstrating compliance becomes commonplace in the industry, there is a need for NCASI to be more involved in tracking CEMs technologies, understand underlying implementation questions, and summarize key requirements for ongoing performance assurance of these systems.
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NCASI work in this emerging focus area revolves around Next Generation (Next Gen) sensors for fine PM and VOC that are increasingly becoming viable screening tools and are able to generate reliable, quality assured data. NCASI has conducted limited evaluations of key PM2.5 sensors and is tracking activity in this…
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NCASI work in this focus area most recently involves the use of ambient PM monitors as screening tools for carrying out source-level sampling, particularly on low-emitting sources that are not suited for conventional sampling methods.
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