1978-06-07 Septic System Design - Laserfiche WebLink

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June 7, 1978 Mr. Lester Kelly 125 South Brown Road Long Lake, Minnesota 55356 Res Percolation Tests for Subdivision Platting, Orono, Minnesota Job Number 11-76-25 Dear Mr. Kellys Enalosed is information requested in regards to -the suitability of Parcels 2 and 3 for on-site sewage treatment. The drainfield information is based on percolation tests and soil borings performed on May 23, 24, and 25, 1978, Parcel 2 The soils found on Parcel 2 are Glencoe silty clay loam, Hamel loam and Lester loam. These soils are mapped in Figure 1. the percola- tion rate for the primary field as tested was 9.7 minutes/inch. The percolation rate for the secondary field as tested was 7.3 minutes/ the proposed drainfield areas are indicated in Figure 1. Percolation rates and depths to the water table are shown in Table 1. The soil logs of the soil borings are shown in Table 2. An 'innovative shallow trench systwm" or a mound system ed for both the primary and secondary drainfield sites. toms will allow for the required 3.0' separation between of the drainfield and the water table. The soil borings the primary and secondary drainfield sites indicate that table is at a lepth )f 4.0' or greater. I have enclosed tion view of such a system. Parcel 3 is recommend - These sys- the bottom taken at the water an eleva- `The soils found on Parcel 3 are Glencoe silty clay loam, Hanel loan and Lester loam. These soils are mapped in Figure 1. The percola- tion rate for the primary field as tested was 6.5 minutes/inch. The percolation rate for the secondary field as tested was 11.5 minutes/ inch. The location 3f the percolation rest holes, soil borings, and proposed drainfield areas are indicated in Figure 1. Percolation rates and depths to the water table are shown in Table 1. The soil loqs of the soil borings are shown in Table 2.