1993-07-12 Septic System Design Report

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S-P. TESTING, INC. Steven B. Schirmers — MPCA Cert. No. 627 951 Katydid Lane NE • St. Michael, M' ' 176 • (612) 497-3566 July 12, 1993 Jim Pfleider 511 North Ferndale Rd. Orono, Henn. Co., MN This Or -Fite Sewage Treatment System is Designed for a Type 1 foils bedroom home in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. This Design is Revised ,from the plan dated December 21, 1992. A new site has been Designed & will reed to be surveyed 6 approved to meet the City of Orono's requirments. The soils on this site are SCS soils mapped - HcB2 - Hayden clay loam. A seasonally high water table was located at 36" to 40" (mottled soil). Due to the seasonally high water table, a Pressurized Mound System will need to be installed. The bottom of the rock bed must be located at least 3' above the seasonally high water table. The soils at a depth of 12" have a percolation rate averaging 11.3 min/inch. A pumping chamber will need to be installed to lift the effluent to the treatment area. The manifold and supply line pipe must have back drainage to the pumping chamber. The distribution pipes shall have their ends capped. Be sure the rock and sand fill material are clean. The sod layer below the entire mounded area must be turned over, just break up the sod, be sure riot to over work. The power supply and switches must he located outside the manhole and pumping chamber in a weather proof enclosure. A warning device must be installed with a light and sound device, this is in case of a pump failure. Mercury floats are a good method. This site has an existing failing system with a seepage bed surface discharging. The existing system is located off of the property. The existing tanks may be used upon approval by the local Inspector. CONT'D