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Water test questions by RE

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14 Questions

The city issues the NPDES permit.

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The NPDES permit program was created in _______________ by the Clean Water Act (CWA)and is administered by the federal USEPA.

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Digester gas is a product of wastewater solids treatment that contains

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Wastewater treatment facilities can be an extremely safe occupational field.

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0.1% concentration = 1, 000 ppm or mg/L

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A 12.5% bleach solution contains 12.5% or 125, 000 ppm of active chlorine.

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An air gap is the best device for preventing backflow into the potable water supply.

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A lateral is the piping that connects the public sewer to the building.

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Excessive FOG accumulation can't cause sewer overflows.

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Explain "sloughs off" in wastewater plants.

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Trickling filter is a fixed film primary treatment process.

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Match the items for stabilization ponds.

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Pond Area

Formula: Pond Area = Width ∗ Length.

also, Pond Area =

Pond Volume divided by

Pond Depth

Example Problem: A pond is 260 ft. long and 80 ft. wide. What is the area of this pond in acres?

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