Officials stress detectors and alarm thresholds for ammonia response

Mar 12, 2026

Presenter Marcus Ettis urged use of personal and fixed detectors and automatic alarms, citing example activation thresholds (150 ppm) and warning that lack of visible vapor does not equal safety.

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At the Jerome County Local Emergency Planning Committee meeting, Marcus Ettis emphasized the central role of detectors and automatic alarms in early ammonia detection. He said visual absence of a vapor cloud is not proof of safety and encouraged facility operators to rely on calibrated detectors and meters.

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