Laserfiche WebLink
-� .r <br /> Engineered Septic System <br /> Parcel 1 did not achieve a passing percolation rate. All of the surrounding parcels <br /> have found acceptable percolation rates. Due to the time of year the tests were <br /> taken and the fact that the parcel had crops growing on it, the owner chose not to <br /> further explore finding an acceptable percolation rate. The ground was very wet <br /> and the owner did not want any more crops destroyed than necessary. Even if I <br /> could have found an acceptable percolation rate, it may not have been in the <br /> location of a future homesite. For those reasons, I am proposing an Engineered <br /> system for Parcel 1 with the understanding that any future homesite may do <br /> further exploration and find an acceptable percolation rate. If an acceptable rate is <br /> achieved a conventional system can be installed. <br /> Parcel 1 achieved minimal percolation during portions of the test. The best rate <br /> achieved was 125 min/inch. Utilizing a 4% factor (which is very conservative), the <br /> actual amount of percolation per day is 0.46 in/day or 0.038 ft/day. <br /> My design will utilize a filter bed with leach lines on 5 foot centers. The leach lines <br /> will have pits at the ends. The bed will consist of a 12" gravel bed, overlaid with <br /> — perforated pipe, overlaid with native soil. The bed I am designing is an 80'x60' <br /> effective bed. The amount of percolation by this bed is as follows: <br /> 80'x60' = 4,800 sf x (0.038 ft/day) <br /> 182 cft/day <br /> 1 ,360 gal/day <br /> The capacity of the bed, 1360 gal/day, is more than sufficient for a four bedroom <br /> house. <br />