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> <br />V <br />" TO: <br />FROM: <br />DATE: <br />liJie - Kevcrl? TO SO/LS. <br /><e^€AJ - K€ to p/a^ac /»aat ><5 /aj <br />File /»A47- efx^tc.t <br />Mike Gaffron, Septic System Inspector <br />Kay 16, 1978 <br />I I <br />i <br />SUBJECT: Septic Systems - Soil Testing, Stielow Subdivision <br />A review of the soil testing information submitted by Hickock <br />and Associates for the Stielow Subdivision leads me to the <br />following conclusions: <br />Lot 1 - Percolation rate 11 min./inch; 5 min./inch at secondary <br />site; water table at 2-4 feet; mottled below 3 feet. Water table <br />is too high for a standard system. Slopes of 6-12Z on the primary <br />site are too steep for a mound system. Possibilities for this <br />lot are: 1) a mound system in the secondary dralnfleld area; <br />2) holding tanks; or 3) declare the lot as unbuildable. <br />^ I Lot 2 - Percolation rate 24 min./inch; 23 min./inch at secondary <br />* site; water table at 3-7 feet. Primary site is near or within <br />existing drainfield. Slopes of 0-6X. Due to high water table, <br />a mound system or shallow trenches would be necessary. <br />^ ^Lot 3 - Percolation rate 83 min./inch; 83 min./inch at'secondary <br />site; water table at 3-7 feet; slopes of 6-12X. High water table <br />Indicates standard trenches will not be acceptable (soil mottling <br />at 5 ft., 3 ft., and 1 ft. indicate a high seasonal water table). <br />Slopes are too steep for a mound system, and perc rates are too <br />■ slow for shallow trenches. I believe it may be possible to install <br />a mound to the southeast of proposed drainfields where the slope <br />is more level. Additional testing would be necessary. <br />W ^Lot 4 - Percolation rate 100 min./inch; 33 min./inch at secondary <br />' site. The lot is presently being retested to find a more suitable <br />site. <br />^ Wlot 5 - Percolation rate 27 min./inch; 53 min./inch at secondary <br />' site. Water table at 8 ft. Soil mottling below 6 ft., slopes <br />4-12X. A standard system could be installed on this lot. <br />f ^^jot 6 - Percolation rate 67 min./inch; 30 min./inch at secondary <br />^ ^ site. Water table at 3.5 - 8 ft. Mottling at 3.5 ft. A mound <br />system would be necessary on this lot due to high water table and <br />slow perc rate. ^ ^