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Lot 5 <br />The soil borings performed by Otto Associates bring up more questions than answers. One soil log <br />indicates that a sandy clay texture was found at 40 inches, but mottled soil was observ'ed at 47 <br />inches. Soil boring number 6 had a seasonal water table at 34 inches while soil boring number 7 had <br />a seasonal water table at 45 inches, yet these borings w ere performed within 20 feet of each other. <br />It is very likely that mound drainfields would be required for this lot and the slopes are too steep to <br />meet City Standards. Additional testing will be required to determine whether suitable drainfield <br />sites exist on this lot. <br />Lot 6 <br />This lot looks good for locating drainfield sites. <br />Lot 7 <br />Soil borings by Otto Associates indicate that trench systems will work on this lot. There appears <br />to be sufficient area on this lot for drainfield sites. <br />Lot 8 <br />This lot appears to have sufficient area for two drainfield sites, but the building pad would be forced <br />into an area with steep slopes. <br />Based on the above information, staff recommends that several of the lots be altered to provide <br />suitable drainfield sites. At this time much more information must be provided before we can <br />approve any subdivision plan. Each lot must have tw'o drainfield sites which are suitable for a five <br />bedroom residence completely designed and located on the survey. Special concerns on this parcel <br />include assuring that the mound sites are located on slopes less than six percent, identifying <br />potential building sites and providing driveway locations on difficult lots.