Tier II: Fluorometry

Tier II monitoring provides real-time data from a dispersant-treated oil slick. When Tier II monitoring is used, a sampling team on a boat uses a fluorometer to continuously monitor for dispersed oil 1 meter under the slick. The team records fluorometer data and conveys them to the Unified Command. Water samples are also taken for later analysis at a laboratory.

Preparing a Fluorometer In this photo, a NOAA and U.S. Coast Guard team prepares a fluorometer for a dispersant monitoring exercise near Mobile, Alabama.

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Revised: July 17, 2001
Office of Response and Restoration, National Ocean Service, National Oceanic and Atmospheric Administration