Septic System; Not a Swimming Pool

This leaching field excavation was done in Attleboro, MA.  The hole is about 8′ deep and since we had to leave it sit over night and wait for an inspection by the town the next morning, the hole filled up with 3 feet of ground water.  We had to pump the hole for about an hour ,then scrape the bottom of the hole of any silty material and finally fill the hole with around 300 yards of septic sand.