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• Preliminary Plat of Fox Bend - Septic System Testing August 22, 1989 Page 4 of 4 General Comments - Each proposed lot appears to have suitable primary and alternate drainfield sites. On some lots, the primary and alternate sites shown are the onl possible sites available. On other lots, it is likely that additional testing could f ind a number of potential sites, allowing additional flexibility in house placement. In each case, drainfield sites have been designed to meet the minimum 20' setback from property Iines, and 75' setbacks rom designated wetlands. On the majority of lots, extreme caution must be taken uring construction of improvements to the property. Road onstruction will take place within 50' of tested drainf ield ites on at least 6 of 17 lots, and on 2 lots the sites are elatively near the area proposed to be graded to provide a etention basin. I would recommend that each lot have drainfield ites protected by snow fence totally surrounding the drainfield ites at a distance 20' from the boundaries of each drainfield system. Additionally, when road construction plans are s bmitted, I would like to review them to determine where road c t would have a potential impact on drainfield sites. S ry - Out of 34 drainfield sites tested, 29 require mound systems a d 5 would allow a trench-type system. Each lot has primary and a ternate sites designated. It would not be surprising if as ma y as 20$ of the sites ultimately will have to be re-tested due to the buyer's preference for house sites near or conflicting wi h drainfields. Some lots are extremely limited for potential dr infield sites, others provide a degree of flexibility in house pl cement. Given the above facts, concerns, and constraints, I would re ommend approval of the subdivision as proposed. Accompanying th' s memo is a topographic survey of the preliminary plat showing po ential house locations and locations of both primary and alt rnate drainfield sites.