5-Septic Design.pdf

This document appears to be a septic system design for the Smith Septic System project on the Squaxin Island in Mason County, Washington. The septic system design is for a federal contract opportunity solicitation issued by the Department of Health and Human Services Indian Health Service.

The key details of the septic system design include the installation of an individual septic system with a subsurface drip system drainfield. The system is to consist of solid sewer pipe, an underground cleanout, a 500 gallons/day aerobic treatment unit, a 1,000-gallon pump chamber with pump and controls, 80 feet of supply and return line, manifolds, and 684 square feet of subsurface drip system drainfield containing approximately 456 feet of drip line. The contractor is responsible for obtaining any required permits, including the Department of Ecology Notice of Intent/Washington Water Resources Department (WWRD).