1. Explain the purposes of flow meters, racks, screens, shredders, grit channels, grit separators, preaeration, and emergency storage facilities.
2. Properly and safely start up, operate, shut down, and maintain preliminary treatment processes, preaeration wastewater treatment processes, and emergency storage facilities.
3. Read, calibrate, and maintain flow measuring devices in pipelines, open channels, or flumes.
4. Determine the volume of screenings and how long a disposal site will last before it is full.

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