Photo Gallery – AFOs BEFORE: small, unlined impoundment lacked adequate storage and de-watering system, causing occasional discharges. Building new impoundment to store wastewater runoff Settling Channel installed above new clay lined impoundment. Solids settling helps preserve impoundment storage volume Slotted drain to divert clean water runoff from feed alleys Completed new impoundment with dewatering system to land apply wastewater on cropland. Liner composed of compacted native material with 1 foot of earthen cover. The impoundment is now ready for seeding and mulching to re-establish vegetation.