2018-01-29_WASD Septic System Improvements plan set.pdf

This is a technical plan set for septic system improvements at Whiteford Agricultural Schools in Ottawa Lake, Michigan, prepared by OHM under the supervision of G. John Tanner and submitted to the Monroe County Health Department for approval on 07/25/18. The project involves the installation of a new septic system including a 2000-gallon equalization/pump chamber tank, pump control panel, and five disposal field zones with perforated pipe distribution systems.

The design specifications detail daily flow calculations of 2385 gallons with a total required septic tank retention time of 2.26 days. The system includes tank installation requirements, distribution valve specifications, and disposal field construction guidelines. Technical drawings show detailed cross-sections of the forcemain trench, cleanout risers, pump chamber profile, and field zone layouts. The disposal field preparation requires clearing of brush and trees across an area approximately 120' x 95' with specific requirements for protecting the existing disposal field during construction. The plans include both overall site plans showing the location at the school property and detailed construction drawings for all system components.