Summary

This is a Septic System Permit issued by the Cowlitz County Health Department (Environmental Health Unit) on June 12, 2025, for a residential wastewater treatment system installation at 105 Cowlitz Gardens Road, Kelso, Washington. The permit is valid until June 12, 2030 and was approved by Nic Bakotich, Environmental Health Specialist. The project applicant is Justin Terry, located in Milwaukie, Oregon, with the system designer being Robert F Sweeney of Environmental Management Systems.

The approved system is a Treatment Level E, Subsurface Drip Drainfield with no pre-treatment, designed for a 3-bedroom residential property with a design flow of 360 gallons per day. The system consists of a 1,000-gallon 2-compartment concrete septic tank (REDI-MIX 1000G) with effluent filter, a 1,000-gallon pump chamber, and a 900-square-foot subsurface drip irrigation field utilizing 450 feet of total dripline at 2-foot spacing. The installation includes a Geoflow automated dosing system with a PF100511 high-head turbine pump, automatic field flush capability, and a control panel with cycle counters and elapsed time meters. The permit requires inspector approval prior to final occupancy, annual operation and maintenance inspections, and strict adherence to Washington Administrative Code 246-272A and 246-272C standards. All alterations to the approved design must receive prior written approval from Cowlitz County Health Department before implementation.