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#541 <br />TO;Jeanne Mabusth, Zoning Administrator <br />FROM:Michael P. Gaffron, On-Site Systems Manager <br />DATE:February 25, 1980 <br />SUBJECT: On-Site Evaluation/ Green Trees <br />Subdivision #541 <br />I have reviewed the soil testing and evaluation report submitted <br />by the applicant and recommend approval of the proposed division <br />subject to the items noted below: <br />Lot 1 - Percolation rate and indicated water table depth will allow <br />a standard drainfield. Extreme care must be taken to protect <br />this area from construction trafficand disturbance due to <br />its proximity to the existing road. <br />Lot 2 - Percolation rate and water table depth will allow a standard <br />drainfield. Depending on final placement of house, <br />additional testing might be necessary prior to issuing a <br />building permit. <br />Lot 3 - Has existing house and drainfield. No problems with existing <br />drainfield were noted. Testing showed adequate area and soils <br />for future drainfield. A new well to be located on the lot <br />will not encroach on drainfield areas. <br />Lot 4 - Existing mansion - will have new drainfield installed in <br />tested area. Percolation rate and water table will allow <br />standard drainfield. <br />Lots 5 & 6 - Soil testing indicated fair percolation rate for those <br />holes which did not freeze. Soil textures would indicate <br />no problems will be encountered with a standard drainfield <br />system, although some additional testing to verify water <br />table depth and extent of good soils will be required prior <br />to issuance of permits. <br />Based on the information presented and the soil types indicated, I <br />am confident that adequate areas of suitable soil exist on each <br />proposed lot to support satisfactory septic systems. Some additional <br />testing will be required on certain lots prior to issuance of permits; <br />however, I feel we are justified in approving the proposed lots based <br />on the information presented. <br />Please note that about one-third of the percolation tests on this <br />division failed due to freezing and frost depth. We always warn <br />prospective developers that perc tests taken in the winter may very <br />well fail due to frost. This case again proves the point. <br />•T-ia~T-'T in-