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TO: Jeanne A. Mabusth, Zoning Administrator <br />FROM: Michael P. Gaffron, Septic Systems Inspector <br />DATE: April 17, 1984 <br />SUBJECT: #804 - Painters Creek (Ski -Tonka) Bayside Road - Subdivision - <br />Soil Testing Review <br />The additional testing required on Lot 9 has been completed and a report <br />has been submitted for City review. The lots which required additional <br />work have been reevaluated and this information i3 now on file. I met <br />with the site evaluator in early March and I am comfortable with his <br />interpretations of the soil borings, which I had earlier questioned. I <br />would like to make the following comments: <br />Lot 1 (Sites 9A 6 9B) <br />- Slope at tested sites averages 16-188 <br />- Topographic location acceptable <br />- Site drainage looks qood <br />- HOUSE SITING CAPABILITY - I RECOMMEND WE ALLOW LESS THAN A 100' HOUSE <br />SETBACK TO BAYSIDE ROAD, IN ORDER TO MINIMIZE POSSIBLE HOUSE ENCROACHMENT <br />ON DRAINFIELD AREAS <br />- Reported perc rates averagely MPI in top foot of soil, both sites <br />- Depth to seasonal saturation zone 4-5' <br />- Soil survey indicates Kilkenny Loam <br />- BECAUSE OF THE STEEP SLOPES, I WOULD RECOMMEND THE TRENCHES BE NO <br />WIDER THAN 2' <br />- Based on depths to seasonal saturation indicated, the primary site should <br />have a maximum trench depth of 1', and the alternate site trenches no <br />deeper than 2' <br />- As for the site evaluator':, notes, a curtain drain might have some benefit <br />here, although its effect might be minimal due to the fine soil textures <br />present <br />Lot 2 ( Sites 10A 6 10B) <br />- Slope at tested sites averages 128 <br />- "opographic location - OK, but this is a slightly concive slope which <br />will tend to hold water, s additional site drainage wcrk may be beneficial <br />during construction <br />- House siting capability - I recommend that specific house site "envelopes" <br />be established to protect drainfield sites <br />