Environmental

A soil percolation test (perc test) is typically required before:

AInstalling a central air conditioning system
BInstalling an on-lot septic (individual on-lot disposal) system on a property✓ Correct
CApplying for a building permit for a garage addition
DRefinancing a residential mortgage

Explanation

A perc test measures how quickly the soil absorbs water, which determines if the soil is suitable for a septic system. Pennsylvania's Sewage Facilities Act requires a soil evaluation (including a perc test) before an on-lot sewage system can be approved.

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