What is a Wet-Weather Perc Test?
A Wet-Weather Perc Test is required on sites with expansive clay soils. This test is conducted during a specific time frame in the wet-weather season. The time frame begins after rainfall has reached a minimum of 50% of annual average. This occurs during the first quarter of each calendar year if there is sufficient rainfall. You may also be required to perform a wet-weather ground water level determination. This is a measurement of the depth to ground water on your lot that is made in a 10 day window following a heavy rainfall during the wet weather testing period.
