Posted 2/22/2017 21:16 (#5857058 - in reply to #5856889) Subject: It's called a drain field here.
Columbia Basin, Ephrata, WA
You have to have a septic drain field designed by an approved designer. You dig a couple of 6' deep holes so the designer can do a percolation test and then they tell you how the drain field needs to be installed.
Seepage bed size questions
