A field team is using bacteriophage PRD-1 and potassium bromide as tracers to assess potential contamination from a nearby septic tank. Which result BEST supports the presence of preferential flow paths in the subsurface?

Question

Answer

PRD-1 is detected at the same time or earlier than bromide

Answer

Bromide appears first, followed by delayed detection of PRD-1

Answer

PRD-1 is never detected in the effluent

Answer

PRD-1 is recovered at the same depth as bromide but at lower concentrations

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A field team is using bacteriophage PRD-1 and potassium bromide as tracers to as...

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