01-18-1982 Planning Packet - Laserfiche WebLink

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#615 Ringer Subdivision Page 5 Lot 6, Block 1 Peres PB61 thru PB66. Borings BB61 thru BB63. Average perc rates at both sites are acceptable. Slopes range from 2 to 4%. Mottling started at a depth of approximately 2.4 feet, with actual water level at 2.5 to 4.4'. A standard mound system should be used at both sites. Lot 7, Block 1 Peres PB71 thru PB76. Borings BB71 thru BB73. Slopes average 2-3%. Perc rates were fairly slow, with the secondary site being somewhat slower than the limit (however, the justification for Lot 5, Block 1 also applies here). Actual water level ranged from 1.7 to 3.5' with mottling generally below 2.5'. A standard mound xs recommended for both sites. Lot 1, Block 2 P>.ccs PAll thru PA18. Borings BAll thru BA13. Slopes are very tjeit. Mottling was indicated below 2.2 ' with actual water eiiwvuntered below 2.0'. Two secondary sites were tested. All sites are acceptable for a standard mound system. Lot 2, Block 2 Peres PA21 thru PA26. Borings BA21 thru BA23. Very flat slopes. Mottling occurs at 2.0 to 2.4' with actual water encountered below 2.4'. Perc rates on both sites are acceptable. A mound system is recommended for both sites. Lot 3, Block 2 Peres PA31 thru PA36. Borings BA31 thru BA33. Slopes averaged 2 to 5%. Mottling starts at a depth of 2.0-3.5'. Actual water level was below 2.5'. Perc rates are acceptable. Mound systems are recommended for both sites. Lot 4, Block 2 Peres PA41 thru PA46. Borings BA41 thru BA43. Slopes are very flat. Mottling generally was found below 2.0', with actual water level at about 4.0'. Perc rate for primary site is acceptable; perc rate for secondary site is slightly slow but acceptable for a mound based on the justification referred to for Lot 5, Block 1. I recommend a mound system for both sites. Lot 5, Block 2 Peres PA51 thru PA56. Borings BA51 thru BA53. Slopes are very flat. Mottling occurred below 1.2 feet with actual water below 4.0 feet. Perc rates are acceptable for the primary site and slightly slow at the secondary site. (Refer to Lot Block 1) This lot has the overall worst set of percolation rates of the division. However, only two of the percs were taken in the topsoil, the others, two of which were very slow, were at depth. I recommend that a mound system be used on this site. If percs were re-taken in the topsoil, it is likely they would pass as did nearly all others done in this manner. * 8