Installing an ecology block retaining wall to hold cover soil over a septic tank, MicroFAST ATU (aerobic treatment unit), and pump tank — all tanks are Infiltrator brand. The retaining wall was necessary here to keep the required cover soil in place over the tanks on a sloped site. Job location: Redmond, King County, WA
This setup includes:
✅ Septic tank (Infiltrator IM 1060)
✅ MicroFAST ATU for advanced treatment (Infiltrator IM 1060)
✅ Pump tank for effluent dosing (Infiltrator IM 1530)
✅ Ecology block retaining wall for soil retention
Fresh N Clean Septic — septic installation, maintenance, and repair serving King County and Snohomish County, WA.