1995-04-16 Soil Report - Laserfiche WebLink

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S -P TESTING, INC. Steven B. Schirmers — MPCA Ceit. No. 627 951 Katydid Lane NE • St. Michael, MN 55376 • (612) 497.3566 April 16, 1995 Bryson & Myers Cluster System Big Island Orono, Henn. Co., MN This On -Site Sewage Treatment System is Designed for a Type 1, two bedroom home for each site = 600 gal/day. Each site is an actual Type 11, two bedroom. Designed in accordance with the Minnesota Pollution Control Agency Chapter 7080 and loyal ordinances. This system is designed as a cluster system due to very limited space for adequately treating septic effluent. The proposed system is a 10"dia. graveless trench located at cabin A, the Bryson property. Recommend an easment & maintenance agreement be made between the 2 land owners & the City of Orono. The soils on this site are a clay loam. A seasonally saturated layer of soil was found at 66" to 78", (mottled soil). The bottom of the system must be located at least 3' above the seasonally saturated soil. The soils at a depth of 30" have a percolation rate averaging 15.6 min/inch. A pumping chamber will need to be installed to lift the effluent to the treatment area. The power supply and switches must be 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. Due to the system being seasonally used, the ta..ks must be insulated to prevent freezing during winter months. The accumulation of sludge should be inspected no less frequent than every three years. The disposal of sludge should take place whenever the top of the sludge layer is less than 17." below the bittom of the outlet baffle cit, why nr•:ar bottom of tho scum layer is less than 1" above the bottom of the outlet baffle. Removal of septage shall include complete removal of scum and sludge. A water meter must be installed at each cabin to monitor the daily water use. Due to this site being the only area available for an On -Site Sewage Treatment System, recommend to install low water use facilities, 1.6gal/flush toilets, low flow shower heads etc.